WO2023221008A1

WO2023221008A1 - Cooking device, pipeline system, and method for controlling pipeline system

Info

Publication number: WO2023221008A1
Application number: PCT/CN2022/093706
Authority: WO
Inventors: 雷奎; 张帆
Original assignee: 深圳市虎一科技有限公司
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2023-11-23

Abstract

A cooking device (100), a pipeline system (130, 230, 330, 430, 530), and a method for controlling a pipeline system. The cooking device (100) comprises a liquid storage tank (120, 720) and a pipeline system (130, 230, 330, 430, 530) in communication with the liquid storage tank (120, 720). The pipeline system (130, 230, 330, 430, 530) comprises: a first pipeline (140, 240, 340, 440, 540), a second pipeline (150, 250, 350, 450, 550), and a vacuum pump (160, 260, 360, 460, 560) provided between the first pipeline (140, 240, 340, 440, 540) and the second pipeline (150, 250, 350, 450, 550), wherein the first pipeline (140, 240, 340, 440, 540) is in communication with an inlet of the vacuum pump (160, 260, 360, 460, 560); the second pipeline (150, 250, 350, 450, 550) is in communication with an outlet of the vacuum pump (160, 260, 360, 460, 560); an inlet end of the first pipeline (140, 240, 340, 440, 540) is in communication with an outlet portion (124, 724) of the liquid storage tank (120, 720); and an outlet end of the second pipeline (150, 250, 350, 450, 550) is in communication with an inlet portion (122, 722) of the liquid storage tank (120, 720). The control method comprises: controlling a second pump body to operate, so that a liquid enters the second pipeline from the first pipeline; and controlling a first pump body to operate, so that the liquid enters the second pump body, or at least enabling the liquid in the first pipeline (140, 240, 340, 440, 540) and the second pipeline (150, 250, 350, 450, 550) to be discharged, wherein the first pump body comprises the vacuum pump (160, 260, 360, 460, 560).

Description

Cooking device, piping system and control method of piping system

Technical field

This specification relates to the technical field of cooking appliances, and in particular to a cooking device, a pipeline system and a control method of the pipeline system.

Background technique

Modernist cooking has given rise to a new way of cooking and preserving food - sous vide; sous vide allows chefs or users to store the food they have cooked and then reheat it without compromising any of the food's subtle flavors and textures With sous vide, users can heat food to the exact temperature they want and for the exact time they want, and equally importantly, the heating can be very even so every part of the food reaches the same temperature, which requires Precisely control the core temperature to control the flavor and texture of your food.

From the above principles of sous vide cooking, we can know that temperature and time are the core factors that affect the flavor and texture of food. In order to pursue the flavor and texture of food and ensure the repeatability of cooking results, it is necessary to ensure that the sous vide cooking device can provide a temperature Stable and uniform low-temperature cooking environment and maintaining the stability and uniformity of temperature in the cooking environment over a long period of time have always been technical difficulties faced by sous vide cooking devices.

Contents of the invention

One embodiment of the present specification provides a cooking device, which includes a liquid storage tank and a pipeline system connected to the liquid storage tank; the pipeline system includes: a first pipeline; a second pipeline; and a vacuum pump. , is arranged between the first pipeline and the second pipeline; wherein the first pipeline is connected to the inlet of the vacuum pump, and the second pipeline is connected to the outlet of the vacuum pump; The inlet end of the first pipeline is connected to the outlet of the liquid storage tank, and the outlet end of the second pipeline is connected to the inlet of the liquid storage tank.

In some embodiments, the vacuum pump includes a diaphragm pump.

In some embodiments, the pipeline system further includes a water pump, one end of the water pump is connected to the first pipeline, and the other end of the water pump is connected to the inlet of the vacuum pump.

In some embodiments, the pipeline system further includes a first exhaust valve connected to at least one of the first pipeline and the second pipeline.

In some embodiments, the pipeline system further includes a heating device and/or a refrigeration device for heating or cooling the liquid in the pipeline system.

In some embodiments, the heating device and/or the refrigeration device includes an energy transfer tube and a heating element and/or a refrigeration element arranged outside the energy transfer tube; one end of the energy transfer tube is connected to the first A pipeline is connected, and the other end of the energy transfer tube is connected to the second pipeline.

In some embodiments, when the pipeline system further includes a water pump, one end of the energy transfer tube is connected to the outlet of the water pump; the other end of the energy transfer tube is connected to the second pipeline.

In some embodiments, the pipeline system further includes a one-way valve, one end of the one-way valve is connected to the first pipeline, and the other end of the one-way valve is connected to the second pipeline; The direction of the one-way valve is from one end of the one-way valve to the other end of the one-way valve.

In some embodiments, the one-way valve is disposed between the energy transfer tube and the second pipeline; the direction of the one-way valve is from the energy transfer tube to the second pipeline.

In some embodiments, one end of the one-way valve is connected to the inlet of the vacuum pump, and the other end of the one-way valve is connected to the second pipeline.

In some embodiments, the pipeline system further includes a second exhaust valve disposed between the one-way valve and the energy transfer tube.

In some embodiments, the pipeline system further includes a second exhaust valve pipeline, one end of the second exhaust valve pipeline is connected to the second exhaust valve, and the second exhaust valve pipeline The other end is connected to the pipeline between the one-way valve and the energy transfer tube.

In some embodiments, the piping system is provided on the side of the liquid storage tank.

In some embodiments, the outlet portion of the liquid storage tank and the inlet portion of the liquid storage tank are disposed on the side wall of the liquid storage tank.

In some embodiments, the outlet of the liquid storage tank includes a lower outlet and an upper outlet connected to an outlet channel between the lower outlet and the upper outlet; the inlet of the liquid storage tank includes a lower inlet and an upper outlet. An entrance is an entrance passage connecting the lower entrance and the upper entrance.

In some embodiments, the communication position between the first exhaust valve and the first pipeline or the second pipeline is higher than the highest point of the liquid level in the liquid storage tank and the pipeline system.

In some embodiments, the pipeline system includes a one-way valve, a heat transfer tube, and a second exhaust valve located between the one-way valve and the heat transfer tube, and the second exhaust valve is connected to The communication position of the pipeline between the one-way valve and the heat transfer tube is higher than the highest point of the liquid level in the liquid storage tank and the pipeline system.

In some embodiments, the liquid storage tank is detachably connected to the piping system.

In some embodiments, the first pipeline is detachably connected to the outlet of the liquid storage tank; the second pipeline is detachably connected to the inlet of the liquid storage tank.

In some embodiments, the first pipeline is sealingly connected to the outlet of the liquid storage tank; the second pipeline is sealingly connected to the inlet of the liquid storage tank.

In some embodiments, at least part of the piping system is provided on the side of the reservoir.

One embodiment of this specification provides a pipeline system, which includes: a first pipeline; a second pipeline; and a vacuum pump disposed between the first pipeline and the second pipeline; wherein , the first pipeline is connected to the inlet of the vacuum pump, the second pipeline is connected to the outlet of the vacuum pump; the inlet end of the first pipeline is connected to the outlet of the liquid storage tank, and the third pipeline is connected to the outlet of the vacuum pump. The outlet end of the second pipeline is connected with the inlet of the liquid storage tank.

In some embodiments, the pipeline system further includes a water pump, which is connected in series with the vacuum pump.

In some embodiments, the piping system further includes a heating device and/or a refrigeration device for heating or cooling the liquid in the piping system; the heating device and/or the refrigeration device includes energy A transfer tube and a heating element and/or a refrigeration element arranged outside the energy transfer tube; the energy transfer tube is connected in parallel with the vacuum pump.

In some embodiments, when the pipeline system further includes a water pump, the energy transfer tube is connected in series with the water pump.

In some embodiments, the ratio between the water circulation flow rate in the pipeline system and the volume of the liquid storage tank ranges from 1:6 to 1:1.

In some embodiments, the ratio between the water pump flow rate of the water pump and the volume of the liquid storage tank ranges from 1:6 to 1:1.

One embodiment of this specification provides a control method for the above-mentioned pipeline system. The control method includes: controlling the operation of the second pump body so that liquid enters the second pipeline from the first pipeline; controlling the operation of the first pump body so that The liquid enters the second pump body or at least discharges the liquid in the first pipeline and the second pipeline; the first pump body includes a vacuum pump.

In some embodiments, controlling the operation of the second pump body to allow liquid to enter the first pump body or at least to discharge the liquid in the first pipeline and the second pipeline includes: at the control station Before the second pump body is operated so that the liquid enters the second pipeline from the first pipeline, the first pump body is controlled to operate so that the liquid enters the second pump body.

In some embodiments, controlling the operation of the first pump body to allow liquid to enter the second pump body or at least to discharge the liquid in the first pipeline and the second pipeline includes: at the control station After the operation of the second pump body is completed, the operation of the first pump body is controlled to at least discharge the liquid in the first pipeline and the second pipeline.

In some embodiments, controlling the operation of the first pump body to allow liquid to enter the second pump body or at least to discharge the liquid in the first pipeline and the second pipeline includes: at the control station Before the second pump body is operated so that the liquid enters the second pipeline from the first pipeline, the first pump body is controlled to operate so that the liquid enters the second pump body; after the operation of the second pump body is controlled to end After that, the first pump body is controlled to operate to at least discharge the liquid in the first pipeline and the second pipeline.

In some embodiments, the pipeline system includes an exhaust valve connected to at least one of the first pipeline and the second pipeline, and the method further includes: controlling the When the first pump body is operated, the exhaust valve is controlled to be in a closed state before the liquid enters the second pump body.

In some embodiments, during the process of controlling the operation of the first pump body to allow liquid to enter the second pump body, the operation time of the first pump body includes 3 seconds to 15 seconds.

In some embodiments, the pipeline system includes an exhaust valve; the method further includes: controlling the operation of the first pump body, at least causing the liquid in the first pipeline and the second pipeline to Before discharge, the exhaust valve is controlled to be in an open state.

In some embodiments, controlling the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline also includes: controlling the end of the operation of the second pump body. After a preset time, the first pump body is controlled to operate to at least discharge the liquid in the first pipeline and the second pipeline.

One embodiment of this specification also provides a control system for a pipeline system. The control system includes a second pump body control module for controlling the operation of the second pump body so that liquid enters the second pipeline from the first pipeline. The system also includes a first pump body control module for controlling the operation of the first pump body to allow liquid to enter the second pump body or at least to discharge the liquid in the first pipeline and the second pipeline. The first pump body includes a vacuum pump.

In some embodiments, a cooking device includes at least one processor and at least one memory. At least one memory is used to store computer instructions. At least one processor is operable to perform at least a portion of the linear computer instructions to perform any of the operations described above.

One embodiment of this specification also provides a computer-readable storage medium. The storage medium stores computer instructions, and when at least part of the computer instructions are executed by a processor, any one of the above operations is implemented.

One embodiment of the present specification also provides a cooking device. The cooking device includes: the cooking device includes a liquid storage tank and a pipeline system connected to the liquid storage tank; the pipeline system includes: a first pipe pipeline; a second pipeline; a first pump body, disposed between the first pipeline and the second pipeline; wherein the first pipeline is connected to the inlet of the first pump body, so The second pipeline is connected to the outlet of the first pump body; the cooking device has a first working mode and a second working mode; when the cooking device operates in the first working mode, the first pump The whole operation is used to introduce the water in the liquid storage tank into the pipeline system for circulation; when the cooking device operates in the second working mode, the water in the first pipeline or the second pipeline At least one of them is connected to atmospheric pressure and the first pump is running, for draining the water in the pipeline system into the liquid storage tank; when the cooking device is in the cooking state, the cooking device operates in the In the first working mode; when a preset instruction is detected, the first working mode is switched to the second working mode.

In some embodiments, the preset instruction includes a cooking end instruction or a start instruction of the second working mode.

In some embodiments, the cooking device further includes an energy transfer pipe and a second exhaust valve; the energy transfer pipe is connected in series with the first pump body; and the second exhaust valve is disposed on the energy transfer pipe. and the second pipeline.

In some embodiments, the cooking device further includes a second pump body, which is connected in series with the first pump body for operating in the first working mode.

In some embodiments, the flow rate of the second pump body is greater than that of the first pump body.

In some embodiments, in the first working mode, the first pump body is started before the second pump body.

In some embodiments, in the second operating mode, the first pump body is closed later than the second pump body.

In some embodiments, the cooking device further includes a first exhaust valve connected to the first pipeline.

In some embodiments, the ratio between the flow rate of the second pump body and the volume of the liquid storage tank ranges from 1:6 to 1:1.

Description of the drawings

This specification is further explained by way of example embodiments, which are described in detail by means of the accompanying drawings. These embodiments are not limiting. In these embodiments, the same numbers represent the same structures, where:

Figure 1 is a schematic diagram of a cooking device according to some embodiments of the present specification;

Figure 2 is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification;

Figure 3 is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification;

Figure 4A is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification;

Figure 4B is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification;

Figure 5A is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification;

Figure 5B is an exemplary perspective view of a piping system according to some embodiments of the present specification;

Figure 5C is an exemplary perspective view from another angle of the piping system shown in Figure 5B;

Figure 6A is a schematic diagram of the connection structure between the energy transfer tube and the second pipeline according to some embodiments of this specification;

Figure 6B is a schematic diagram of the connection structure between the energy transfer tube port and the silicone tube according to some embodiments of this specification;

Figure 6C is a schematic structural diagram of a clamp according to some embodiments of this specification;

Figure 7 is a schematic structural diagram of the inlet and outlet of the liquid storage tank according to some embodiments of this specification;

Figure 8 is a control flow diagram of a piping system according to some embodiments of this specification;

Figure 9 is another control flow diagram of the piping system shown in some embodiments of this specification;

Figure 10 is another control flow diagram of the piping system shown in some embodiments of this specification;

Figure 11 is a module schematic diagram of a control system of a pipeline system according to some embodiments of this specification.

Explanation of reference signs: 100. Cooking device; 102. Heating or cooling component; 110. Control component; 120,720, liquid storage tank; 122,722, inlet; 124,724, outlet; 130,230,330,430,530, pipeline system; 140,240,340,440,540, first pipeline ;150,250,350,450,550, second pipeline; 160,260,360,460,560, vacuum pump; 170,470,570, water pump; 241,341,441,541, inlet end; 251,351,451,551, outlet end; 381,481,581, first exhaust valve; 390, 590,690, energy transfer pipe; 395,595, one-way valve; 472,572,672, transition pipe Road; 531, left half area; 533, right half area; 540-1, straight section; 540-2, curved section; 542, horizontal distribution section; 562, vacuum pump water inlet pipe; 564, vacuum pump water outlet pipe; 582, First exhaust valve pipeline; 583, second exhaust valve; 584, second exhaust valve pipeline; 691, silicone tube; 692, clamp; 722-1, lower inlet; 722-2, upper inlet; 723. Entrance passage; 724-1. Lower exit; 724-1-1. First lower exit; 724-1-2. Second lower exit; 724-2. Upper exit; 725. Exit passage; 725-1. First outlet channel; 725-2, second outlet channel; 1100, control system; 1110, first pump body control module; 1120, second pump body control module.

Detailed ways

In order to explain the technical solutions of the embodiments of this specification more clearly, the accompanying drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some examples or embodiments of this specification. For those of ordinary skill in the art, without exerting any creative efforts, this specification can also be applied to other applications based on these drawings. Other similar scenarios. Unless obvious from the locale or otherwise stated, the same reference numbers in the figures represent the same structure or operation.

It will be understood that the terms "system", "apparatus", "unit" and/or "module" as used herein are a means of distinguishing between different components, elements, parts, portions or assemblies at different levels. However, said words may be replaced by other expressions if they serve the same purpose.

As shown in this specification and claims, words such as "a", "an", "an" and/or "the" do not specifically refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only imply the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

Flowcharts are used in this specification to illustrate operations performed by systems according to embodiments of this specification. It should be understood that preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. At the same time, you can add other operations to these processes, or remove a step or steps from these processes.

Figure 1 is a schematic diagram of a cooking device 100 according to some embodiments of the present specification. As shown in FIG. 1 , the cooking device 100 mainly includes a liquid storage tank 120 and a pipeline system 130 . Among them, the liquid storage tank 120 is used to store liquid. The pipeline system 130 is used to communicate with the liquid storage tank 120, lead the liquid in the liquid storage tank 120 out of the liquid storage tank 120, and then return it to the liquid storage tank 120 after passing through the pipeline system 130, so as to realize the circulation of the liquid in the liquid storage tank 120. flow.

In some embodiments, the pipeline system 130 includes a first pipeline 140 and a second pipeline 150 , and the liquid storage tank 120 includes an inlet portion 122 and an outlet portion 124 . The first pipeline 140 is connected to the outlet 124 of the liquid storage tank 120 , and the second pipeline 150 is connected to the inlet 122 of the liquid storage tank 120 . The liquid in the liquid storage tank 120 passes through the outlet 124 and the first pipeline 140 The liquid storage tank 120 is connected and flows out into the pipeline system 130 , and then flows back to the liquid storage tank 120 through the communication between the second pipeline 150 and the inlet part 122 , so that the liquid in the liquid storage tank 120 flows between the pipeline system 130 and the liquid storage tank. A circulating liquid path is formed between 120.

In some embodiments, the cooking device 100 may further include a heating or cooling component 102 for heating or cooling the liquid in the liquid storage tank 120 . For example only, the heating or cooling component 102 can heat or cool the liquid in the pipeline system 130, and the heated or cooled liquid will bring energy back to the liquid storage tank, thereby heating the liquid in the liquid storage tank 120. or refrigeration. In some embodiments, the heated or cooled liquid in the liquid storage tank 120 can heat or cool the food ingredients placed in the liquid. For example, a slow cooker or rice cooker.

In some embodiments, the heating or cooling assembly 102 may include components that directly heat or cool the liquid in the reservoir 120 . For example, a metal heating rod or heating wire placed in the liquid in the liquid storage tank 120 is used to heat the liquid. For another example, a cooling chip placed in the liquid in the liquid storage tank 120 is used to cool the liquid. In some embodiments, the heating or cooling assembly 102 may include components that directly heat or cool the reservoir 120 . For example, a heating base or a cooling base placed at the bottom of the liquid storage tank 120 . In some embodiments, the heating or cooling component 102 can also be disposed in the pipeline system 130, that is, to heat or cool the liquid in the pipeline system 130. The heating or cooling component 102 heats or cools the liquid flowing into the pipeline system 130. The heated or cooled liquid flows back from the pipeline system 130 into the liquid storage tank 120, and is mixed with the liquid in the liquid storage tank 120. Thus, the liquid in the liquid storage tank 120 is heated or cooled. For example, when the heating or cooling component 102 is used to heat the liquid in the liquid storage tank 120, the temperature of the liquid entering the pipeline system 130 from the liquid storage tank 120 is relatively low and passes through the heating or cooling component 102 (such as , heating tube), the temperature of the liquid flowing back from the pipeline system 130 to the liquid storage tank 120 is relatively high. The liquid with a higher temperature flows back to the liquid storage tank 120 and mixes with the liquid in the liquid storage tank 120. The heated liquid brings the heat back to the liquid storage tank 120. The liquid in the liquid storage tank 120 passes through the pipeline system 130 and Circulation flows between the liquid storage tanks 120 to achieve heating of the liquid in the liquid storage tanks 120 .

In some embodiments, the cooking device 100 may also include a control assembly 110 for controlling related components of the pipeline system 130 . For example, the control component 110 can control the relevant working status of the power device of the pipeline system 130, such as the relevant working status of the water pump 170. In some embodiments, the relevant working status of the water pump 170 includes but is not limited to starting or stopping the water pump 170, liquid pumping speed, etc. For another example, the control component 110 can control the relevant working status of the heating or cooling component 102 of the pipeline system 130 . The relevant working status of the heating or cooling component 102 includes but is not limited to the starting or stopping of the heating or cooling component 102 , the working power of the heating or cooling component 102 , etc. The control component 110 can operate by controlling the heating or cooling component 102 to heat or cool the liquid in the liquid storage tank 120 .

In some embodiments, control component 110 may include a processor. In some embodiments, the control component 110 may include a microcontroller unit (MCU) control system. In some embodiments, the control component 110 may include, but is not limited to, a programmable chip, a desktop computer, a notebook computer, a mobile phone terminal, an iPad mobile terminal, etc.

In some embodiments, the pipeline system 130 further includes a power device for pumping the liquid in the liquid storage tank 120 to the pipeline system 130 and driving the liquid in the pipeline system 130 (for example, the first pipeline 140. Flow in the second pipeline 150). In some embodiments, the power device may include, but is not limited to, a pump power device. In some embodiments, the pump power device includes, but is not limited to, water pump 170 . Water pump 170 refers to a device that can transport liquid or pressurize liquid. In some embodiments, the water pump 170 includes, but is not limited to, a vane water pump, a positive displacement water pump, a jet water pump, and the like. Among them, vane water pumps include centrifugal pumps, vortex pumps, etc. Positive displacement water pumps include plunger pumps, etc. Jet water pumps include water jet pumps, etc.

In some embodiments, when a centrifugal water pump is used in the pipeline system 130 of the cooking device 100 to drive the flow of liquid in the pipeline, and the heating or refrigeration component 102 is used to cyclically heat or cyclically cool the liquid in the liquid storage tank 120, After the liquid circulation heating or cooling operation of the cooking device 100 is completed, there will be residual liquid in the pipelines and water pumps of the pipeline system 130 . There is a risk that the residual liquid will deteriorate and become odorous if stored in the pipeline system 130 for a long time. When the liquid circulation heating or cooling operation of the cooking device 100 is performed again (that is, the cooking device 100 is used next time), the liquid will deteriorate and become odorous. It will flow into the liquid storage tank 120 through the pipeline system 130, thereby affecting the quality of the liquid in the liquid storage tank 120. Therefore, the residual liquid in the pipeline system 130 needs to be discharged.

In some embodiments, by disposing a vacuum pump 160 in the pipeline system 130 , the vacuum pump 160 can discharge at least part of the residual liquid in the pipeline system 130 , thereby preventing the residual liquid from flowing in when the cooking device 100 is used next time. The liquid storage tank 120 affects the quality of the liquid in the liquid storage tank 120 .

In some embodiments, a vacuum pump 160 may be included in the piping system 130 of the cooking device 100 . The vacuum pump 160 is provided between the first pipeline 140 and the second pipeline 150 . The vacuum pump 160 is connected to the first pipeline 140 and the second pipeline 150 . After the cycle heating or cycle cooling process of the cooking device 100 is completed, the water pump 170 stops working, and the liquid no longer circulates. At this time, the vacuum pump 160 can be started. When the vacuum pump 160 is in the working state, the residual liquid in the piping system 130 can be discharged to the liquid storage tank 120 through the piping system 130 through the self-priming function. The self-priming function of the vacuum pump 160 may refer to the fact that the vacuum pump 160 can evacuate air to form a negative pressure after vacuum in the pipeline system 130, and the residual liquid in the pipeline system 130 is discharged under the action of negative pressure. In some embodiments, the vacuum pump 160 can work in conjunction with the valve structure to discharge residual liquid in the pipeline system 130 . The valve structure may be a structure capable of connecting a location in the piping system 130 to the atmosphere. In some embodiments, valve structures include, but are not limited to, exhaust valves.

In some embodiments, after the vacuum pump 160 discharges the residual liquid in the pipeline system 130, an air segment will be formed in the pipeline system 130. When an air segment is formed in the piping system 130 , there will also be an air segment inside the water pump 170 , resulting in the water pump 170 not being filled with liquid. This will cause the water pump 170 to be unable to absorb liquid or absorb liquid slowly, thereby affecting the normal operation of the cooking device 100 . In this case, the vacuum pump 160 can be started before the water pump 170 of the cooking device 100 is started, and the self-priming function of the vacuum pump 160 can be used to form a vacuum negative pressure in the pipeline system 130, thereby generating suction force to draw the pipeline system 130 into the pipeline system 130. The air is sucked away, so that the liquid in the liquid storage tank 120 can fill or partially fill the water pump 170, so that the water pump 170 or the cooking device 100 can work normally.

By disposing the vacuum pump 160 in the cooking device 100 , on the one hand, after the liquid circulation heating or cooling process of the cooking device 100 is completed, the self-priming function of the vacuum pump 160 can be used to discharge the residual liquid in the pipeline system 130 to the liquid storage tank 120 , thereby ensuring that no liquid remains in the pipeline system 130. On the other hand, before the liquid circulation heating or cooling process of the cooking device 100 starts (that is, the water pump 170 is started), the self-priming function of the vacuum pump 160 is used to generate suction, thereby sucking away the air in the pipeline system 130, so that The liquid in the liquid storage tank 120 can flow into the water pump 170 through the pipeline system 130, thereby ensuring that the water pump 170 can work normally. More information about the vacuum pump 160 and valve structure can be found elsewhere in this specification.

In some embodiments, when the cooking device 100 includes the vacuum pump 160, the position of the outlet 124 of the liquid storage tank 120 can be flexibly set. For example, the outlet 124 of the liquid storage tank 120 can be disposed at the bottom of the liquid storage tank 120 or in the liquid storage tank 120. side walls of the box 120.

In some embodiments, the cooking device 100 may include, but is not limited to, a slow cooker, a rice steamer, a rice cooker, and the like. The related solutions of the pipeline system 130 and/or the liquid storage tank 120 in one or more embodiments of this specification can also be applied to other devices besides the cooking device 100 . The liquid in the liquid storage tank 120 also includes, but is not limited to, water or other liquids. For the convenience of explanation, the control method of the pipeline system 130, the liquid storage tank 120 and the pipeline system 130 in the cooking device 100 will be described below using a low-temperature slow cooker as an example.

Figures 2, 3, 4A and 4B are exemplary structural diagrams of a pipeline system according to some embodiments of this specification. In some embodiments, the piping system 230 shown in FIG. 2 may only include the vacuum pump 260, and the piping system 330 shown in FIG. 3 may only include the vacuum pump 360. In some embodiments, the pipeline system 430 shown in FIGS. 4A and 4B may also include a vacuum pump 460 and a water pump 470.

In one or more embodiments of this specification, a vacuum pump (eg, vacuum pump 260, vacuum pump 360, vacuum pump 460, etc.) may be understood as various devices capable of extracting gas. In some embodiments, the vacuum pump may include a device or device that uses mechanical, physical, chemical or physicochemical methods to evacuate the pumped container to obtain a vacuum. In some embodiments, the vacuum pump may include a gas transfer pump and a gas collection pump. Among them, the gas transfer pump achieves the purpose of sucking gas by continuously inhaling and discharging gas. The gas capture pump achieves the purpose of extracting gas by causing gas molecules to be adsorbed or condensed on the inner surface of the pump to reduce the number of gas molecules in the container. In some embodiments, gas transfer pumps include, but are not limited to, diaphragm pumps, piston vacuum pumps, rotary vane vacuum pumps, molecular vacuum pumps, jet vacuum pumps, diffusion pumps, diffusion jet pumps, and ion transport pumps. In some embodiments, gas trap pumps include, but are not limited to, adsorption pumps, getter pumps, getter ion pumps, and cryogenic pumps.

In some embodiments, as shown in FIGS. 4A and 4B , the vacuum pump 460 at least has a gas extraction function (gas extraction function). The air extraction function of the vacuum pump 460 can suck away the air section in the pipeline system 430, so that the liquid can fill the water pump 470, so that the water pump 470 can work normally. As shown in FIGS. 4A and 4B , when the vacuum pump 460 only has a pumping function, the pipeline system 430 also includes a water pump 470 for driving the flow of liquid in the pipeline system 430 . In some embodiments, the vacuum pump 460 may also have both a gas pumping function and a liquid pumping function (liquid pumping function). For example, the vacuum pump 460 may be a water ring vacuum pump. The function of pumping liquid can be understood as the vacuum pump capable of driving liquid to flow in the pipeline system 430 . At this time, the pipeline system 430 may also include both a vacuum pump 460 and a water pump 470. When the water pump 470 is working, the vacuum pump 460 stops working to prevent the liquid drawn by the vacuum pump 460 from the liquid storage tank and the water pump 470 from being pumped to the heating or cooling component. The combination of the heated or cooled liquids affects the temperature of the liquid flowing back to the liquid storage tank through the outlet end 451 of the second pipeline 450 .

In some embodiments, as shown in Figures 2 and 3, when a pumping device is included in the pipeline system, the vacuum pump 260 (and the vacuum pump 360) can have both the air pumping function and the liquid pumping function. The vacuum pump 260 (and the vacuum pump 360 ) can be used to pump gas or as a water pump to drive liquid to flow in the pipeline.

As shown in FIG. 2 , the pipeline system 230 may include a first pipeline 240 , a second pipeline 250 , and a vacuum pump 260 disposed between the first pipeline 240 and the second pipeline 250 . The first pipeline 240 is connected to the inlet of the vacuum pump 260 , and the second pipeline 250 is connected to the outlet of the vacuum pump 260 . The first pipeline 240 can be regarded as the water inlet pipe of the pipeline system 230 , and the second pipeline 250 can be regarded as the water outlet pipe of the pipeline system 230 . The outlet of the liquid storage tank is connected to the first pipeline 240 , and the inlet of the liquid storage tank is connected to the second pipeline 250 . The liquid in the liquid storage tank flows from the outlet of the liquid storage tank into the pipeline system 230 through the first pipeline 240, then flows through the inlet of the vacuum pump 260, flows out from the outlet of the vacuum pump 260, and then flows out of the liquid storage tank through the second pipeline 250. The inlet flows back to the reservoir.

In some embodiments, the first conduit 240 has an inlet end 241 and the second conduit 250 has an outlet end 251 . The inlet port 241 can be regarded as the port on the first pipeline 240 through which liquid flows. The outlet port 251 can be regarded as the port on the second pipeline 250 through which the liquid flows out. The inlet of the vacuum pump 260 is connected to an end of the first pipeline 240 away from the inlet end 241 , and the outlet of the vacuum pump 260 is connected to an end of the second pipeline 250 away from the outlet end 251 .

The vacuum pump 260 in Figure 2 can have both air pumping and liquid pumping functions. The liquid pumping function of the vacuum pump 260 can be understood as when the vacuum pump 260 pumps the gas in the pipeline system 230, the liquid in the pipeline system 230 will flow under the action of suction. For example, when the vacuum pump 260 extracts the gas in the pipeline system 230, the liquid in the liquid storage tank can flow into the pipeline system 230 under the action of suction (this process corresponds to the exhaust process of the pipeline system 230). For another example, when the vacuum pump 260 extracts the gas in the piping system 230, the liquid in the piping system 230 can flow under the action of the pressure difference and flow out of the piping system 230 (this process corresponds to the liquid drainage process of the piping system 230). . In some embodiments, after the pipeline system 230 stops liquid circulation, there may be residual liquid in the pipeline system 230. In order to discharge the residual liquid from the pipeline system 230, the vacuum pump 260 works to form a negative pressure in the vacuum pump 260, The residual liquid in the pipeline system 230 (especially the residual liquid in the pipeline between the inlet of the vacuum pump 260 and the inlet end 241 of the first pipeline 240) flows into the vacuum pump 260 under the action of negative pressure, and further passes through the third pipeline. The outlet end 251 of the second pipeline 250 discharges the pipeline system 230. It can be understood that during the drainage process of the pipeline system 230, there will be an auxiliary function of the exhaust valve and/or the one-way valve. When the exhaust valve is connected to the outside atmosphere, it can ensure that there is a certain amount of air in the pipeline system 230. Due to differential pressure, one-way valves can limit the flow direction of liquids in piping systems. Detailed descriptions of exhaust valves and check valves can be found elsewhere in this manual. In some embodiments, after the residual liquid in the pipeline system 230 is discharged, an air segment will be formed in the pipeline system 230. When the pipeline system 230 is started again, the vacuum pump 260 works to extract the space between the inlet of the vacuum pump 260 and the liquid storage tank. The air in all pipelines (for example, the first pipeline 240) forms a negative pressure in this section of the pipeline and generates suction. The liquid in the liquid storage tank enters the first pipeline 240 under the action of suction, thereby entering Vacuum pump 260 drives liquid to flow in the pipeline system 230 . It can be understood that when the vacuum pump 260 extracts air in all pipelines between the inlet of the vacuum pump 260 and the liquid storage tank, the pipeline system 230 (for example, the inlet/outlet portion of the side wall of the liquid storage tank, the inlet and outlet of the liquid storage tank) /The water outlet pipe, the inlet end 241 of the first pipeline 240, the outlet end 251 of the second pipeline 250, and the connections between the pipelines in the pipeline system 230, etc.) are sealed.

The pipeline system 330 in Figure 3 is substantially the same as the pipeline system 230 in Figure 2. For example, the pipeline system 330 includes a first pipeline 340, a first pipeline inlet end 341, a second pipeline 350, a second pipeline Outlet port 351 and vacuum pump 360. The difference is that the pipeline system 330 in Figure 3 also includes an energy transfer pipe 390, a one-way valve 395, and a first exhaust valve 381. The energy transfer tube 390 may be used to heat or cool the liquid in the piping system 330 . The one-way valve 395 may be used to control the flow of liquid in the piping system 330 . For example, the liquid in the pipeline system 330 can only flow from the first pipeline 340 to the second pipeline 350 under the control of the one-way valve 395 . The first exhaust valve 381 can cooperate with the vacuum pump 360 to realize exhaust and liquid discharge of the pipeline system 360 by the vacuum pump 360 . In some embodiments, there may be a height difference between the connection position of the first exhaust valve 381 and the first pipeline 340 (ie, the point A position in FIG. 3) and the outlet of the liquid storage tank. When the first row When the air valve 381 is in the open state, there is a pressure difference between the air pressure at point A and the water pressure of the liquid in the liquid storage tank, so that the liquid in the section 341 from point A to the inlet end of the first pipeline 340 is in contact with the liquid in the liquid storage tank. The liquid is disconnected, so that the liquid in the section from point A to the inlet end 341 of the first pipeline 340 can flow back to the liquid storage tank under the action of the pressure difference and the liquid's own gravity. For more information about the energy transfer tube 390, the one-way valve 395, and the first exhaust valve 381, please refer to other places in this specification.

In the embodiment shown in FIGS. 4A and 4B , the pipeline system 430 includes a vacuum pump 460 and a water pump 470 . At this time, the water pump 470 has a liquid pumping function, and the vacuum pump 460 at least has a gas pumping function. That is, the vacuum pump 460 can only have a gas pumping function, or the vacuum pump 460 can also have both a liquid pumping function and a gas pumping function. In some embodiments, piping system 430 also includes transition piping 472 . The transition pipeline 472 is provided between the first pipeline 440 and the second pipeline 450 for the water pump 470 to transfer the liquid in the first pipeline 440 to the second pipeline 450 . In some embodiments, a one-way valve (not shown) may be provided in the transition pipeline 472 , and the one-way valve can prevent the liquid from flowing back from the second pipeline 450 to the first pipeline 440 , thereby ensuring that the fluid in the pipeline system 430 Effective circulation flow of liquid. It can also be understood that by arranging a one-way valve in the transition pipeline 472 , it is possible to prevent ineffective liquid circulation between the transition pipeline 472 and the vacuum pump 460 pipeline arranged in parallel with the transition pipeline 472 .

In some embodiments (such as the embodiments shown in FIGS. 4A and 4B ), the inlet of the water pump 470 is connected to the first pipeline 440 , and the outlet of the water pump 470 is connected to the inlet of the vacuum pump 460 and the second pipeline 450 . The pipeline system 430 is branched from the first pipeline 440 to the water pump 470. The first branch connects the outlet of the water pump 470 to the inlet of the vacuum pump 460, and the outlet of the vacuum pump 460 is connected to the second pipeline 450. The second branch is connected to the outlet of the water pump 470 and the transition pipeline 472 , and the transition pipeline 472 is connected to the second pipeline 450 . When the vacuum pump 460 is started, the air extraction function of the vacuum pump 460 can extract and discharge the gas in all pipelines between the inlet of the vacuum pump 460 and the liquid storage tank (for example, the first pipeline 440) and the water pump 470 to the liquid storage tank. Thereby, a negative pressure after vacuum is formed in this section of pipeline to generate suction, so that the liquid in the liquid storage tank enters the pipeline system 430 under the action of suction and enters the water pump 470. When a certain amount of liquid enters the water pump 470, The water pump 470 starts working, and the vacuum pump 460 stops working immediately or within a period of time (for example, 2 seconds). When the water pump 470 is working, the liquid is pumped from the first pipeline 440 through the second branch to the second pipeline 450, thereby realizing a circular flow of the liquid. It can be understood that when the vacuum pump 460 sucks the liquid in all the pipelines between the inlet of the vacuum pump 460 and the liquid storage tank, the one-way valve can prevent the liquid and air from flowing from the second pipeline 450 to the first pipeline 440. This provides a suitable working environment for the vacuum pump 460 to suck the gas in the pipeline.

In some embodiments, vacuum pump 460 may include a diaphragm pump. The diaphragm pump includes a diaphragm, which divides the diaphragm pump into two parts. When the diaphragm pump works, the diaphragm moves back and forth to change the volume on both sides of the diaphragm, thereby changing the pressure on both sides of the diaphragm to achieve liquid/gas pumping. When the diaphragm pump is working, it does not need to be filled with water, and it has strong self-priming ability. It can work without water for a long time, and the damage to the pump caused by water-free work is low. Moreover, the diaphragm pump is small in size, light in weight, and easy to install and disassemble.

In some embodiments, water pump 470 may include a centrifugal pump. The centrifugal pump uses the rotation of the impeller to cause centrifugal movement of water, causing the water to be thrown toward the outer edge of the impeller and flow into the pipeline through the flow channel to achieve the purpose of pumping. The centrifugal pump has a simple structure, few parts, low failure rate, small pulses when pumping liquid, and good delivery continuity. In some embodiments, the water pump 470 may also include other types of pump bodies, such as a plunger pump, etc.

When the pump body with the liquid pumping function (for example, the water pump 470 or the vacuum pump 460 with the liquid pumping function) stops running, the liquid circulation between the liquid storage tank and the pipeline system 430 also stops, and the liquid in the liquid storage tank no longer enters. Piping system 430. At this time, the liquid in the pipeline system 430 that is higher than the liquid level in the liquid storage tank and is not bent can flow to the liquid storage tank under the action of gravity. Otherwise, the liquid in the other parts of the pipeline system 430 cannot flow into the liquid storage tank. In the box, liquid residue will form. In some embodiments, the residual liquid in the pipeline system 430 can be at least partially discharged from the pipeline system 430 by utilizing the air extraction function of the vacuum pump 460 in combination with the valve design. Valves may include any device capable of communicating with the outside atmosphere. Valves include, but are not limited to, exhaust valves. By setting a valve at a certain position in the piping system 430, the position in the piping system 430 is connected to the atmosphere, and then using the air extraction function of the vacuum pump 460 to adjust the atmospheric pressure at certain positions in the piping system 430, Thereby, the residual liquid is discharged along the piping system 430 under the action of atmospheric pressure. In some embodiments, the valve may also include a one-way valve, which can prevent liquid and air from flowing from the second pipeline 450 to the first pipeline 440, thereby ensuring the flow direction and air pressure environment of the liquid in the pipeline system 430. .

In some embodiments, valves may be provided in the first line 440 and/or the second line 450. In some embodiments, the valve may include first exhaust valve 481 . The first exhaust valve 481 is connected to the first pipeline 440 and/or the second pipeline 450 . In some embodiments, the first exhaust valve 481 may be connected only to the first pipeline 440 (eg, Figure 4B). In some embodiments, the first exhaust valve 481 may also be connected only to the second pipeline 450 (eg, FIG. 4A ). In some embodiments, the first exhaust valve 481 may also be connected to the first pipeline 440 and the second pipeline 450 at the same time. In some embodiments, the working state (eg, closed, open) of the exhaust valve 481 is related to the state of the pipeline system 430 (eg, draining, exhausting, hydronic heating/cooling).

In some embodiments, as shown in FIG. 4B , the first exhaust valve 481 is connected to the first pipeline 440 , and when the pipeline system 430 is draining (ie, the residual liquid in the pipeline system 430 is discharged), the vacuum pump 460 starts work, and the first exhaust valve 481 is in an open state, the connection position A on the first pipeline 440 and the first exhaust valve 481 is connected to the outside atmosphere, and the liquid in the liquid storage tank (for example, in the water outlet pipe of the liquid storage tank liquid), the inlet end 441 of the pipeline system 430, and the pipeline portion from the inlet end 441 to the connection position A can form a pressure balance system. Since the first exhaust valve 481 is strongly connected to the atmospheric pressure and the water outlet pipe of the liquid storage tank is arranged vertically upward, the water in the water outlet pipe of the liquid storage tank will fall downward (until it is flush with the liquid level in the liquid storage tank), so that The inlet end 441 forms a "liquid disconnection" state with the liquid in the liquid storage tank, and the liquid in the pipeline connecting position A to the inlet end 441 can flow back to the liquid storage tank through the inlet end 441 due to its own gravity. In some embodiments, when the pipeline system 430 is draining liquid, the first exhaust valve 481 is connected to the first pipeline 440. At this time, the vacuum pump 460 can also suck part of the first pipeline 440 (for example, a vacuum pump) through self-priming. 460 and the connection position, the liquid sucked by the vacuum pump 460 can be discharged to the second pipeline 450 through the vacuum pump outlet pipe, and then discharged from the pipeline system 430 through the outlet end 451.

In some embodiments, as shown in FIG. 4A , the first exhaust valve 481 is connected to the second pipeline 450 . When the pipeline system 430 is draining liquid, similar to FIG. 4B , the vacuum pump 460 starts to work, and the first exhaust valve 481 is connected to the second pipeline 450 . The valve 481 is in an open state, and a "liquid disconnection" state is formed between the liquid in the liquid storage tank (for example, the liquid in the water inlet pipe of the liquid storage tank) and the outlet end 451 of the second pipeline 450, connecting position A to the outlet end. The liquid in the pipeline of 451 can flow back to the liquid storage tank through the outlet end 451 due to its own gravity. The liquid in part of the pipeline between the vacuum pump 460 and the connection position A is discharged to the second pipeline 450 through the vacuum pump outlet pipe through the self-priming effect of the vacuum pump 460, and then discharged from the pipeline system 430 through the outlet end 451. It should be noted that a one-way valve (not shown) may also play a role in the above liquid discharge process. The one-way valve can block the backflow of liquid and air from the second pipeline 450 to the first pipeline 440, thereby providing a vacuum pump. 460 degree of liquid drainage provides suitable working conditions.

In some embodiments, when the pipeline system 430 is draining liquid, the number of the first exhaust valves 481 may be two, and the first exhaust valves are respectively connected to the first pipeline 440 and the second pipeline 450. To realize the drainage of corresponding pipelines respectively.

In some embodiments, when the pipeline system 430 is exhausting (that is, the vacuum pump 460 sucks gas), the first exhaust valve 481 is in a closed state, and the pipeline (the first pipeline 440 or the second pipeline 450) is connected to the first exhaust valve 481 . The connection position of the exhaust valve 481 is not connected to the outside atmosphere to ensure the tightness of the pipeline system 430. The vacuum pump 460 works to suck the pipeline between the vacuum pump 460 and the liquid storage tank (for example, the first pipeline 440) and the water pump. The air in 470 forms a negative pressure in the pipeline and generates suction, so that the liquid in the liquid storage tank enters the water pump 470 through the first pipeline 440 under the action of suction. In some embodiments, when the pipeline system 430 is used for circulating heating/cooling of liquid, the working state of the first exhaust valve 481 is a closed state.

In some embodiments, as shown in FIGS. 4A and 4B , the first exhaust valve 481 may be connected to the first pipeline 440 or the second pipeline 450 . The connection position between the first exhaust valve 481 and the first pipeline 430 is shown as point A of the first pipeline 430 in FIG. 4B . The connection position between the first exhaust valve 481 and the second pipeline 450 is shown as point A on the second pipeline 450 in FIG. 4A . When the pipeline system 430 is operating normally, the first exhaust valve 481 is in a closed state. When the pipeline system 430 stops working and the liquid in the pipeline system 430 needs to be at least partially discharged, the first exhaust valve 481 is in an open state. The normal operation of the pipeline system 430 can be understood to mean that the pump body with the liquid pumping function (for example, the water pump 470 or the vacuum pump 460 with the liquid pumping function) in the pipeline system 430 is in a running state. When the pipeline system 430 stops working, it can be understood that the pump body with the liquid pumping function in the pipeline system 430 (for example, the water pump 470 or the vacuum pump 460 with the liquid pumping function) stops running. When the pipeline system 430 stops working, the liquid circulation between the liquid storage tank and the pipeline system 430 stops. Among them, after the liquid circulation between the liquid storage tank and the pipeline system 430 is stopped, the liquid pumping performed by the vacuum pump 460 for drainage does not belong to the normal operation of the pipeline system 430 . In some embodiments, the first exhaust valve 481 is disposed above the pipes of the piping system 430, and the first exhaust valve 481 is located at the highest point of the piping system 430. For details, please refer to the first exhaust valve 481 in Figures 5A to 5C. Description of exhaust valve 581.

In some embodiments, when the pipeline system 330 only includes the vacuum pump 360, for example, as shown in FIG. 3, the first exhaust valve 381 may be connected to the first pipeline 340, and the first exhaust valve 381 is connected to the first The connection position of the pipeline 340 is point A on the first pipeline 340 . After the pipeline system 330 stops working, the liquid in the liquid storage tank stops entering the pipeline system 330, and the first exhaust valve 381 is opened and connected to the outside world, that is, the first exhaust valve 381 on the first pipeline 340 is connected to the first exhaust valve 381. The position (point A on the first pipeline 340) is connected to the outside atmosphere, and the liquid in the section from point A to the inlet end 341 of the first pipeline 340 is disconnected from the liquid in the liquid storage tank. The liquid in this section of pipeline (ie, the section from point A in the first pipeline 340 to the inlet end 341 of the first pipeline 340 ) can flow out of the pipeline system 330 from the inlet end 341 of the first pipeline 340 . In some embodiments, after the liquid in this section of pipeline is disconnected from the liquid in the liquid storage tank, the liquid in this section of pipeline can flow out of the pipeline system 330 under the action of atmospheric pressure and gravity. In this case, the storage tank The height of the liquid in the liquid tank needs to be lower than the height of the inlet end 341 of the first pipeline 340 . In some embodiments, the reason why the liquid in this section of pipeline is disconnected from the liquid in the liquid storage tank may be that the external atmospheric pressure exerts a pressure on the liquid in the first pipeline 340 close to the liquid storage tank, which is greater than the pressure in the liquid storage tank. The pressure exerted by the liquid on the liquid in the same section of pipeline will form an air section after the two pressures are connected and balanced, causing the liquid to be disconnected from the pipeline. In some embodiments, the reason why the liquid in this section of pipeline is disconnected from the liquid in the liquid storage tank may also be that the pipeline system 330 is physically disconnected from the liquid storage tank, for example, the pipeline system 330 is physically disconnected from the liquid storage tank. The docking is disconnected. In some embodiments, the vacuum pump 360 is working, and the liquid in the pipeline between point A on the first pipeline 340 and the inlet of the vacuum pump 360 can be sucked into the vacuum pump 360 through the self-priming function of the vacuum pump 360 , and then sucked into the vacuum pump 360 The liquid in can flow from the outlet of the vacuum pump 360 to the second pipeline 350 and be discharged from the pipeline system 330 through the outlet end 351 of the second pipeline 350.

In some embodiments, as shown in FIG. 4B , the pipeline system 430 includes a vacuum pump 460 and a water pump 470 , the first exhaust valve 481 is connected to the first pipeline 440 , and the first exhaust valve 481 is connected to the first pipeline 440 The connection position is point A on the first pipeline 440. Similar to the description in FIG. 3 , after the pipeline system 430 stops working and the first exhaust valve 481 is opened, the pipeline between point A on the first pipeline 440 and the inlet end 441 of the first pipeline 440 The liquid in the pipeline is disconnected from the liquid in the liquid storage tank, and the liquid in this section of pipeline can flow out of the pipeline system 430 (for example, under the action of gravity). The vacuum pump 460 works, and the liquid in the pipeline from point A on the first pipeline 440 to the water pump 470 to the inlet of the vacuum pump 460 can be sucked into the vacuum pump 460 through the self-priming function of the vacuum pump 460 . In addition, the self-priming function of the vacuum pump 460 can also suck the liquid in the pipeline from the second pipeline 450 to the transition pipeline 472 to the inlet of the vacuum pump 460 into the vacuum pump 460 . When the vacuum pump 460 absorbs the liquid in the pipeline from the second pipeline 450 to the transition pipeline 472 to the inlet of the vacuum pump 460, the one-way valve (not shown) disposed between the vacuum pump 460 and the second pipeline 450 not only It can prevent the liquid from flowing from the second pipeline 450 to the first pipeline 440, and can also block air, so that the pressure in this section of pipeline is smaller than the pressure in the pipeline connected to the first exhaust valve 481, and thus The vacuum pump 460 can use the self-priming function to suck the liquid in this section of pipeline. The liquid sucked into the vacuum pump 460 under the self-priming function of the vacuum pump 460 can flow into the second pipeline 450 from the outlet of the vacuum pump 460, so that the liquid is discharged from the pipeline system 430 from the outlet end 451 in the second pipeline 450.

In some embodiments, as shown in FIG. 4A , when the pipeline system 430 includes a vacuum pump 460 and a water pump 470 , the first exhaust valve 481 may also be connected to the second pipeline 450 . Similar to Figure 4B, after the water pump 470 of the pipeline system 430 stops working, the liquid in the liquid storage tank stops entering the pipeline system 430, and the first exhaust valve 481 is opened, so that the second pipeline 450 is connected to the first exhaust valve. The position A where the valve 481 is connected is connected to the outside atmosphere. The liquid in the pipeline between the outlet end 451 of the second pipeline 450 and point A is disconnected from the liquid in the liquid storage tank. The liquid in this section of pipeline can be The piping system 430 flows out of the outlet end 451 of the second piping 450 (eg, under the influence of gravity). When the vacuum pump 460 is running, the vacuum pump 460 can pump the liquid in the pipeline between the point A on the second pipeline 450 along the transition pipeline 472 and the inlet of the vacuum pump 460 into the vacuum pump 460 through the self-priming function; in addition, due to The liquid in the pipeline near the inlet end 441 of the first pipeline 440 is also disconnected from the liquid in the liquid storage tank. The vacuum pump 460 can also connect the first pipeline 440 to the water pump 470 to the inlet of the vacuum pump 460 through the self-priming function. The liquid in the pipeline is extracted into the vacuum pump 460. Under the self-priming function of the vacuum pump 460, the liquid that will be sucked into the vacuum pump 460 can flow to the second pipeline 450 through the first branch, and then from the outlet end 451 of the second pipeline 450. Drain piping system 430. It can be understood that during the liquid discharge process, the one-way valve (not shown) can not only prevent the liquid from flowing from the second pipeline 450 to the first pipeline 440, but also block air to ensure that the vacuum pump 460 Able to draw liquid from the corresponding pipeline. It should be noted that, in order to avoid the problem of incomplete liquid drainage caused by the liquid in the liquid storage tank entering the pipeline system 430 from the inlet end 441 of the first pipeline 440 during the liquid discharge process of the vacuum pump 460, in some embodiments , a switch or valve can be set at the inlet end 441. When the vacuum pump 460 of the pipeline system 430 discharges liquid, the switch or valve is controlled so that the liquid in the liquid storage tank no longer enters the first pipeline 440.

In order to more clearly describe the specific structure and layout of relevant components in the pipeline system 430 (eg, the first exhaust valve 481), the following will be described in conjunction with perspective views.

Referring to FIGS. 5A, 5B and 5C, FIG. 5A is an exemplary structural schematic diagram of a piping system according to some embodiments of this specification, and FIG. 5B is an exemplary perspective view of a piping system according to some embodiments of this specification. Figure 5C is an exemplary perspective view of the piping system shown in Figure 5B from another angle.

As shown in FIGS. 5B and 5C , in the perspective view of the pipeline system 530 , the first pipeline 540 includes a straight section 540 - 1 and a curved section 540 - 2 . Among them, the axis direction of the pipe in the straight section 540-1 is parallel or substantially parallel to the height direction of the liquid storage tank (the straight section 540-1 is also called a vertical arrangement section); the pipe in the curved section 540-2 is located The plane is perpendicular or substantially perpendicular to the axis of the pipe of the straight section 540-1 (the curved section 540-2 is also called a horizontal curved section). In some embodiments, the first pipeline 540 may be connected to the outlet of the liquid storage tank through the straight section 540-1. For example, the straight section 540-1 may include two sections of pipeline, and the two sections of pipeline are respectively located on both sides of the port of the curved section 540-2. Among them, one end of the first section of pipeline is connected to the second pipeline 550, and the other end of the first section of pipeline is connected to a port of the curved section 540-2; one end of the second section of pipeline is connected to a port of the curved section 540-2. The other port is connected, and the other end of the second section of pipeline serves as the inlet end 541 of the first pipeline 540 . The first pipeline 540 is connected to the outlet of the liquid storage tank through the inlet end of the second section of pipeline. In some embodiments, the first pipeline 540 can also be connected to the outlet of the liquid storage tank through the curved section 540-2. For example, when the straight section 540-1 of the first pipeline 540 only includes the first section of pipeline, the outlet of the liquid storage tank can be set in a structure that increases upward and turns, so that the outlet of the liquid storage tank can communicate with the third section of pipeline. The curved section 540-2 of a pipeline 540 is connected. In some embodiments, the water pump 570 is arranged parallel to the pipeline of the straight section 540 - 1 of the first pipeline 540 . In other words, the height direction of the liquid container in the water pump 570 is parallel or substantially parallel to the axis of the straight section 540-1 pipe.

In some embodiments, the part of the first pipeline 540 close to the inlet end 541 is a horizontal curved section (ie, the curved section 540-2); the part of the first pipeline 540 close to the water pump 570 is a vertical section. (i.e. straight section 540-1). After the straight section 540-1 in the first pipeline 540 is connected to the water pump 570, the pipeline connected to the outlet of the water pump 570 includes a horizontal distribution section 542, as shown in Figure 5A. A vacuum pump water inlet pipe 562, a vacuum pump 560, and a vacuum pump water outlet pipe 564 are connected to a certain position (for example, a middle position or other suitable position) of the horizontal distribution section 542 pipeline. A transition pipeline 572 and a second pipeline 550 are connected at the right end of the pipeline in the horizontal distribution section 542 (the end away from the water pump 570). In some embodiments, the transition pipeline 572 and the second pipeline 550 may be two pipelines connected to each other. In some embodiments, the transition pipeline 572 and the second pipeline 550 may also be a single pipeline passing through them. If the transition pipeline 572 and the second pipeline 550 are considered as a whole, the transition pipeline 572 and the second pipeline 550 also include vertical distribution sections and horizontal curved sections. In some embodiments, the straight section and the curved section in the overall pipeline of the transition pipeline 572 and the second pipeline 550 are arranged corresponding to the straight section 540-1 and the curved section 540-2 of the first pipeline 540, Further, it is arranged symmetrically. Therefore, the pipeline system 530 can be divided into two corresponding (or symmetrical) regions on the left and right: a left half region 531 and a right half region 533, as shown in FIG. 5B . The left half area 531 includes a first pipeline 540, a water pump 570, a vacuum pump 560, and a first exhaust valve 581 provided on the first pipeline 540 that are connected in sequence. The right half area 533 includes the second pipeline 550, the transition pipeline 572, and the vacuum pump 560 that are connected in sequence. In some embodiments, the vacuum pump water outlet pipe 564 is connected to the second pipe 550/transition pipe 572, and the liquid in the vacuum pump 560 can flow into the second pipe 550/transition pipe 572 through the vacuum pump water outlet pipe 564. The vacuum pump water outlet pipe 564 can be regarded as forming a parallel relationship with the left half area 531 and the right half area 533 . In some embodiments, the right half area 533 may also include at least one of an energy transfer tube 590, a one-way valve 595, and a second exhaust valve 583. For details, see other parts of this specification.

In some embodiments, the first exhaust valve 581 may be set higher than the highest liquid level point of the left half area 531 (as shown in FIG. 5B ). Setting the first exhaust valve 581 higher than the highest liquid level point of the left half area 531 may mean that the interface position of the first exhaust valve 581 and the first pipeline 540 is higher than the highest liquid level point of the left half area 531 . In some embodiments, point A on the first pipeline 540 connected to the first exhaust valve 581 is higher than the highest liquid level point of the liquid storage tank and the left half area 531 of the pipeline system 530 (as shown in Figure 5B, Figure shown in 5C). In some embodiments, the position of the interface connected to the first pipeline 540 on the first exhaust valve 581 is higher than the highest point of the liquid level in the left half area 531 . In some embodiments, the first exhaust valve 581 may be an electronic switch, and the state of the electronic switch is controlled by a chip of the motherboard. In some embodiments, the first exhaust valve 581 also has a physical switch, such as a control switch. When the control switch is in a closed state, the first exhaust valve 581 is not connected to the outside atmosphere. When the control switch is in an open state, The first exhaust valve 581 is connected to the outside atmosphere. In some embodiments, the control switch of the first exhaust valve 581 may be higher than the highest liquid level point of the left half area 531 . In some embodiments, the control switch of the first exhaust valve 581 may be higher than a position on the first pipeline 540 connected to the first exhaust valve 581 , such as point A. Through the relevant position setting of the first exhaust valve 581 in one or more of the above embodiments, the liquid in the liquid storage tank or the liquid in the pipeline system 530 can not reach the first exhaust valve 581 or the first exhaust valve. 581 to prevent liquid from leaking from the first exhaust valve 581. In some embodiments of this specification, the highest point of the liquid level may refer to the physical highest point of the liquid position in the pipeline system 530 .

In some embodiments, the pipeline system 530 may further include a first exhaust valve pipeline 582 through which the first exhaust valve 581 is connected to the first pipeline 540 . One end of the first exhaust valve pipeline 582 is connected to the first exhaust valve 581, and the connection position is schematically shown as point C shown in FIG. 5A, FIG. 5B, and FIG. 5C. The other end of the first exhaust valve pipeline 582 is connected to the first pipeline 540 at point A. The first exhaust valve pipeline 582 is mainly used to connect the first exhaust valve 581 and the pipeline system 530 . In some embodiments, the connection point C of the first exhaust valve 581 and the first exhaust valve pipeline 582 may be higher than the highest point of the liquid level in the liquid storage tank and pipeline system 530 (see Figure 5B and Figure 5C shown).

It should be noted that the length of the pipeline or pipeline mentioned in one or more embodiments of this specification can be understood as the length of the pipeline or pipeline in the unfolded state, unless otherwise specified.

In some embodiments, when the pipeline system 530 includes a vacuum pump 560 and a water pump 570, the pipeline system 530 may also include a vacuum pump water inlet pipeline 562. One end of the vacuum pump water inlet pipeline 562 is connected to the inlet of the vacuum pump 560, and the vacuum pump water inlet pipeline 562 The other end is connected with the outlet of water pump 570. The vacuum pump water inlet pipeline 562 can connect the water pump 570 and the vacuum pump 560, so that the vacuum pump 560 can pump the liquid in the liquid storage tank into the water pump 570, providing the water pump 570 with the conditions required to start working (that is, there is liquid inside the water pump 570 ).

In some embodiments, the connection position between the vacuum pump water inlet pipeline 562 and the first pipeline 540 may be lower than the lowest liquid level in the water pump 570 to facilitate the outflow of liquid in the water pump 570 . The connection position between the vacuum pump water inlet pipe 562 and the first pipe 540 can be understood as the connection position between the pipe connected to the outlet of the water pump 570 and the vacuum pump water inlet pipe 562, as shown in Figure 5A, Figure 5B, and Figure 5C The position of point D. The lowest liquid level in the water pump 570 can be understood as the liquid level position of the minimum amount of liquid that needs to be filled inside the water pump 570 when the water pump 570 is to operate normally. The comparison of the high and low positions between the connection position of the vacuum pump water inlet pipe 562 and the first pipe 540 and the lowest liquid level in the water pump 570 refers to the comparison of physical positions.

In some embodiments, when the pipeline system 530 includes a vacuum pump 560 and a water pump 570, the pipeline system 530 may also include a vacuum pump water outlet pipe 564. One end of the vacuum pump water outlet pipe 564 is connected to the outlet of the vacuum pump 560, and the other end of the vacuum pump water outlet pipe 564 is connected to the outlet of the vacuum pump 560. One end is connected to the end of the second pipeline 550 away from the outlet end 551, so that the vacuum pump 560 can pump the sucked liquid and/or gas to the liquid storage tank connected to the outlet end 551, forming a complete closed-loop liquid circulation cycle. Pipeline.

It should be noted that the above-mentioned embodiment only includes some basic components of the pipeline system 530. The pipeline system 530 can also be provided with components with other functions, such as one-way valves, exhaust valves, heating devices, refrigeration devices, etc. Devices etc.

In some embodiments, the pipeline system 130 may also be provided with a heating or cooling component 102 for heating or cooling the liquid in the pipeline system 130 . For example, the piping system shown in Figures 3, 5A, 5B, and 5C.

In some embodiments, the heating or cooling component 102 may be a component disposed in the piping system 130 . For example, the heating or cooling component 102 may include an electric heating wire disposed inside the pipeline. For another example, the heating or cooling component 102 may be a heating pipe and/or a cooling pipe with heating and/or cooling functions connected to the pipeline (for example, the energy transfer pipe 590 mentioned in FIGS. 5A to 5C below), etc. .

In other embodiments, the heating or cooling component 102 may also be an external device separate from the piping system 130 . In some embodiments, the external device may be a heating element and/or a cooling element disposed outside a certain section of the pipeline system 130 . For example, heating elements may include electric heating wires, heating sheets, etc.; cooling elements may include refrigeration sheets, cooling strips, etc. In some embodiments, the external device may also be a device that provides a heating environment or a cooling environment. For example, the external device may be a refrigerator, or the external device may be a container containing hot water or dry ice, etc. The heating or cooling assembly 102 is described in more detail below in conjunction with the different embodiments shown in FIG. 3 and FIGS. 5A-5C.

Referring to Figure 3, in some embodiments, when the pipeline system 330 only includes the vacuum pump 360 and not the water pump 370 (at this time, the vacuum pump 360 has both the air pumping function and the liquid pumping function), the energy transfer tube 390 can be disposed at the first between a pipeline 340 and the vacuum pump 360. One end of the energy transfer tube 390 may be connected to the first pipeline 340 , and the other end of the energy transfer tube 390 may be connected to the inlet of the vacuum pump 360 . At this time, the first pipeline 340, the energy transfer tube 390, the vacuum pump 360, and the second pipeline 350 are connected in sequence. After the liquid in the liquid storage tank enters the first pipeline 340, it enters the energy transfer tube 390 for heating or cooling. The treated liquid then enters the second pipeline 350 through the vacuum pump 360, and finally returns to the liquid storage tank 320. In other embodiments, the energy transfer tube 390 can also be arranged between the vacuum pump 360 and the second pipeline 350. The specific arrangement and working process are the same as the above-mentioned energy transfer tube 390 being arranged between the first pipeline 340 and the vacuum pump 360. The structure is similar and will not be described again here.

In some other embodiments, when the pipeline system includes a vacuum pump and a water pump, the energy transfer tube may also be disposed between the water pump and the vacuum pump. One end of the energy transfer tube can be connected to the outlet of the water pump, and the other end of the energy transfer tube can be connected to the inlet of the vacuum pump. At this time, the first pipeline, water pump, energy transfer tube, vacuum pump water inlet pipeline, vacuum pump, vacuum pump water outlet pipeline, and second pipeline are connected in sequence. After the liquid in the liquid storage tank enters the first pipeline, it enters the energy through the water pump. The transfer tube is heated or refrigerated, and the treated liquid enters the second pipeline through the vacuum pump and finally returns to the liquid storage tank. In some embodiments, the energy transfer tube may also be disposed between the first pipeline and the water pump. At this time, the structure of the energy transfer tube is similar to that of the energy transfer tube 390 and will not be described again.

Referring to FIGS. 5A-5C , in some embodiments, the heating or cooling assembly 102 may include an energy transfer tube 590 and a heating element and/or cooling element disposed outside the energy transfer tube 590 . One end of the energy transfer tube 590 is connected to the first pipeline 540 , and the other end of the energy transfer tube 590 is connected to the second pipeline 550 . The liquid discharged from the first pipeline 540 enters the energy transfer tube 590 , and flows through the energy transfer tube 590 After heating by the heating element (or cooling by the cooling element), it finally enters the liquid storage tank through the second pipeline 550 . In some embodiments, as shown in FIGS. 5A-5C , when the pipeline system 530 includes a vacuum pump 560 and a water pump 570 , the connection method between the vacuum pump 560 , the water pump 570 and the energy transfer tube 590 can also be understood as: the vacuum pump 560 and The water pump 570 is connected in series; the energy transfer tube 590 is connected in series with the water pump 570; the energy transfer tube 590 is connected in parallel with the vacuum pump 560.

The energy transfer tube 590 is mainly used to transfer energy between the liquid in the pipeline system 530 and the heating element and/or refrigeration element outside. For example, when the outside of the energy transfer tube 590 is a heating element, after the liquid enters the energy transfer tube 590, the heat of the heating element can be transferred to the liquid through the energy transfer tube 590, thereby raising the temperature of the liquid and heating the liquid. When the outside of the energy transfer tube 590 is a refrigeration element, after the liquid enters the energy transfer tube 590, the heat of the liquid is transferred to the refrigeration element through the energy transfer tube 590, thereby causing the liquid to lose heat and cooling the liquid.

In some embodiments, since the heating element and/or refrigeration element is disposed outside the energy transfer tube 590, in order to enhance the efficiency of energy transfer between the liquid in the energy transfer tube 590 and the heating element and/or refrigeration element, the energy transfer process is reduced. To reduce losses in the energy transfer tube 590, the material of the energy transfer tube 590 may include materials with good thermal conductivity and which do not react with the transfer liquid. For example, when the transmission liquid is water, the material of the energy transfer tube 590 may include copper.

In some embodiments, as shown in Figures 5A, 5B and 5C, when the pipeline system 530 includes a vacuum pump 560 and a water pump 570, one end of the energy transfer tube 590 can be connected to the outlet of the water pump 570, and the energy transfer tube 590 can The other end can be connected to the second pipeline 550 . At this time, the first pipeline 540, the water pump 570, the energy transfer tube 590, and the second pipeline 550 are connected in sequence, so that the liquid extracted from the liquid storage tank is heated or cooled and then transported back to the liquid storage tank. At the same time, the outlet of the water pump 570 is also connected to the inlet of the vacuum pump 560 through the vacuum pump water inlet pipe 562, and the second pipeline 550 is connected to the outlet of the vacuum pump 560 through the vacuum pump water outlet pipe 564. That is, the energy transfer tube 590 and the vacuum pump 560 are connected in parallel. At this time, the first pipeline 540, the water pump 570, the vacuum pump water inlet pipeline 562, the vacuum pump 560, the vacuum pump water outlet pipeline 564, and the second pipeline 550 are connected in sequence. When the water pump 570 is operating normally, the liquid in the liquid storage tank flows from the first pipeline 540 through the water pump 570 and the energy transfer pipe 590 to the second pipeline 550 and flows back to the liquid storage tank to complete the cyclic pumping of the liquid. When the water pump 570 is operating normally, the vacuum pump 560 is in a closed state. In some embodiments, no liquid will flow through the part of the pipeline where the vacuum pump 560 is in the closed state (the pipeline formed by the vacuum pump water inlet pipe 562, the vacuum pump 560, and the vacuum pump water outlet pipe 564).

Continuing to refer to Figures 5A, 5B and 5C, when the piping system 530 is applied to the cooking device 100, when a cooking process is completed, the water pump 570 stops working, and the liquid in the liquid storage tank is no longer pumped to the piping system 530. If the water pump 570 stops working, the original liquid in the pipeline system 530 will no longer be pumped back to the liquid storage tank, resulting in liquid residue in the pipeline system 530 . In order to discharge the residual liquid in the pipeline system 530 , the vacuum pump 560 can be used to drain the pipeline system 530 . In some embodiments, when the pipeline system 530 is draining liquid, the first exhaust valve 581 and the second exhaust valve 583 are both in an open state, and the first pipeline 540 is connected from point A to the inlet of the first pipeline 540 The liquid in the end 541 section is disconnected from the liquid in the liquid storage tank. The liquid in this section of pipeline (that is, the section from point A in the first pipeline 540 to the inlet end 541 of the first pipeline 540) can be transferred from the first pipeline 540 to the inlet end 541 of the first pipeline 540. The inlet end 541 of the path 540 exits the piping system 530 . The pipeline from point A to the inlet of the vacuum pump 560 in the first pipeline 540 and the liquid in the water pump 570 can enter the vacuum pump 560 through the vacuum pump water inlet pipe 562 under the suction of the vacuum pump 560, and pass through the vacuum pump water outlet pipe 564. Discharge to the second pipeline 550. The liquid in the second pipeline 550 from point E (the connection position of the second exhaust valve 583 and the second exhaust valve pipeline 584) to the inlet of the vacuum pump 560 can be affected by the suction force of the vacuum pump 560. It enters the vacuum pump 560 through the vacuum pump water inlet pipe 562 and is discharged from the vacuum pump water outlet pipe 564 to the second pipe 550 . The liquid in the second pipeline 550 from the connection position between the one-way valve 595 and the second pipeline 550 to the outlet end 551 of the second pipeline 550 is also disconnected from the liquid in the liquid storage tank. The liquid in this section of pipeline ( The liquid including the liquid discharged from the vacuum pump outlet pipe 564 into the second pipe 550 can flow out of the pipeline system 530 under the action of gravity. For a description of the functions of the one-way valve 595 and the first exhaust valve 581 and the second exhaust valve 583 in this process, please refer to the detailed description of the one-way valve and the exhaust valve.

In some embodiments, after the residual liquid in the pipeline system 530 is drained, an air segment will be formed in the pipeline system 530 and the water pump 570 . When performing the next cooking process, the vacuum pump 560 needs to be used to first discharge the air in the pipeline from the inlet end 541 of the first pipeline 540 to the water pump 570, so that the liquid in the liquid storage tank can enter the water pump 570. When the water pump 570 After a certain amount of liquid enters, the water pump 570 is operated to realize circulating heating of the liquid. When the vacuum pump 560 sucks and discharges the gas in the pipe section from the inlet end 541 of the first pipeline 540 to the water pump 570, the first exhaust valve 581 and the second exhaust valve 583 are in a closed state, the water pump 570 is closed, and the vacuum pump 560 After sucking the air in the pipeline, a negative pressure after vacuum can be formed in the pipeline to generate suction force. The liquid in the liquid storage tank is sucked into the water pump 570 through the first pipeline 540 under the action of suction force. When the vacuum pump 560 has been running for a certain period of time and the water pump 570 is filled with a certain amount of liquid, and the cooking device 100 starts to heat the liquid in the liquid storage tank through the pipeline system 530, the vacuum pump 560 is turned off, the water pump 570 is started, and the water pump 570 works to The liquid can circulate in the liquid storage tank and pipeline system 530, thereby heating the liquid in the liquid storage tank to cook food. The reason why the vacuum pump 560 needs to be shut down when the water pump 570 is started may be to prevent the liquid drawn by the vacuum pump 560 from the liquid storage tank from affecting the temperature of the liquid pumped by the water pump 570 to the energy transfer tube 590 for heating. The normally operating water pump 570 can pump the liquid to the liquid storage tank along the first pipeline 540, the water pump 570, the energy transfer pipe 590, and the second pipeline 550, while also continuing to draw the liquid from the liquid storage tank. The liquid enters the first pipeline 540 and continues to be pumped to the liquid storage tank along the above-mentioned pipeline to realize circular pumping of the liquid (in one or more embodiments of this specification, this process may be called a liquid circulation process). When the water pump 570 is filled with liquid or partially filled with liquid, and the water pump 570 is started, the vacuum pump 560 can be shut down immediately, or it can continue to work for a period of time and then shut down (for example, the vacuum pump 560 can be shut down 1-3 seconds after the water pump 570 is started, so as to The air in the water pump 570 is drained).

In some embodiments, when the vacuum pump 560 discharges the residual liquid in the pipeline system 530, in order to ensure that part of the liquid in the second pipeline 550 does not flow back to the first pipeline 540, the pipeline system 530 may include a one-way valve. 595.

In some embodiments, referring to Figures 5A-5B, a one-way valve 595 may be located between the first conduit 540 and the second conduit 550. One end of the one-way valve 595 may be connected to the first pipeline 540 , for example, one end of the one-way valve 595 is connected to the first pipeline 540 through the energy transfer pipe 590 . The other end of the one-way valve 595 may be connected to the second pipeline 550 . The direction of the one-way valve 595 is from one end of the one-way valve 595 (the end connected to the first pipeline 540) to the other end of the one-way valve 595 (the end connected to the second pipeline 550), that is, the one-way valve 595 The direction is from the first pipeline 540 to the second pipeline 550, thereby ensuring that the liquid can only flow from the first pipeline 540 to the second pipeline 550 and avoiding liquid backflow.

In some embodiments, the vacuum pump 560 drains the pipeline system 530, and the vacuum pump 560 suctions the second pipeline 550 from point E (the connection position of the second exhaust valve 583 and the second exhaust valve pipeline 584). ) to the inlet of the vacuum pump 560, due to the existence of the one-way valve 595, it is possible to avoid the pipeline from the outlet end 551 of the second pipeline 550 to the end of the one-way valve 595 away from the energy transfer tube 590 The liquid in the energy transfer tube 590 is pumped into the energy transfer tube 590, affecting the liquid discharge process.

As shown in Figures 5A, 5B and 5C, in some embodiments, when the pipeline system 530 includes the energy transfer tube 590, the one-way valve 595 can be disposed between the energy transfer tube 590 and the second pipeline 550, And the direction of the one-way valve 595 is from the energy transfer pipe 590 to the second pipeline 550. The one-way valve 595 can prevent the heated or refrigerated liquid from flowing back to the energy transfer pipe 590, thereby lifting the liquid in the liquid storage tank. temperature measurement accuracy. At the same time, the one-way valve 595 can also cooperate with the vacuum pump 560 and the second exhaust valve provided in the second pipeline 550 to complete the work of draining the residual liquid in the pipeline system 530. For details, please refer to the second exhaust valve below. Description related to valve 583.

In some embodiments, the one-way valve 595 can also be disposed at other locations, such as the inlet of the energy transfer tube 590 or the outlet of the vacuum pump 560, to ensure one-way flow of liquid and prevent liquid backflow.

As shown in FIGS. 5B and 5C , in some embodiments, when the pipeline system 530 includes a vacuum pump 560 and a water pump 570 , the height of the one-way valve 595 may be higher than or equal to the second pipeline 550 and the vacuum pump water outlet pipeline 564 The height of the connection position, that is, along the direction from the inlet to the outlet end 551 of the second pipeline 550, there is a section of inclined pipeline between the one-way valve 595 and the second pipeline 550, and the one-way valve 595 is located higher At one end, the connection position between the second pipeline 550 and the vacuum pump outlet pipe 564 is located at the lower end. Therefore, when the pipeline system 530 stops working and the vacuum pump 560 discharges the residual liquid in the pipeline system 530, the liquid in the above-mentioned inclined pipeline can automatically flow to the outlet of the vacuum pump outlet pipe 564 under the action of gravity and be pumped by the vacuum pump 560. Drain, thereby reducing the amount of residual liquid in the piping system 530.

Referring to FIG. 5A, FIG. 5B and FIG. 5C, in some embodiments, when the pipeline system 530 includes a vacuum pump 560 and a water pump 570, the pipeline system 530 may also include a second exhaust valve 583. Valve 583 may be disposed between one-way valve 595 and energy transfer tube 590 . When the water pump 570 stops working, the liquid circulation between the liquid storage tank and the pipeline system 530 stops, and the liquid in the liquid storage tank no longer enters the pipeline system 530 , but the pipeline system 530 remains connected at the water pump 570 . At this time, when draining the pipeline system 530, the first exhaust valve 581 and the second exhaust valve 583 can be opened and connected to the outside atmosphere, and the end of the first pipeline 540 connected to the liquid storage tank faces the liquid storage tank. Bend, at this time, the liquid in the passage between the inlet end 541 of the first pipe 540 and point A will return to the liquid storage tank from the inlet end 541 of the first pipe 540 under the action of pressure and gravity, and the second pipe One end of the pipeline 550 connected to the liquid storage tank is bent toward the liquid storage tank. The liquid in the passage between point B and the outlet end 551 of the second pipeline 550 will flow from the outlet end of the second pipeline 550 under the action of pressure and gravity. 551 enters the reservoir. After the vacuum pump 560 starts working, the vacuum pump 560 can suck the liquid in the pipeline between point A on the first pipeline 540 and the inlet of the vacuum pump 560 and the water pump 570 into the vacuum pump 560 through the self-priming function, and move the one-way valve 595 close to the energy. The liquid in the pipe between one end of the transfer pipe 590 and the inlet of the vacuum pump 560 and the energy transfer pipe 590 is sucked into the vacuum pump 160, and the sucked residual liquid is transported to the second pipe 550 through the vacuum pump outlet pipe 564, and finally to the storage tank. liquid tank.

In some embodiments, when the pipeline system 530 is drained by the vacuum pump 560, both the first exhaust valve 581 and the second exhaust valve 583 are in an open state. The first exhaust valve 581 is in an open state. The connection position between the first exhaust valve 581 and the first pipeline 540 (for example, point A) is connected to the outside atmosphere. The air pressure at point A is consistent with the pressure of the liquid in the liquid storage tank. There is a pressure difference between the water pressures, so that the liquid from point A to the inlet end 541 of the first pipeline 540 is disconnected from the liquid in the liquid storage tank, so that the liquid from point A to the inlet end 341 of the first pipeline 340 is disconnected. The liquid can flow back to the liquid storage tank under the action of pressure difference and the liquid's own gravity. The remaining liquid from point A along the first pipeline 540 to the vacuum pump inlet pipeline 562 passes through the outlet of the vacuum pump 560 under the self-priming effect of the vacuum pump 560, and enters the liquid storage along the vacuum pump outlet pipeline 564 and the second pipeline 550. in the box. The second exhaust valve 583 is in an open state, and the connection position between the second exhaust valve 583 and the transition pipe 572 (for example, the position B) is connected to the outside atmosphere. The position B is connected to the residual liquid in the vacuum pump inlet pipe 562, Under the self-priming effect of the vacuum pump 560, it passes through the outlet of the vacuum pump 560 and enters the liquid storage tank along the vacuum pump outlet pipe 564 and the second pipe 550. In some embodiments, when the vacuum pump 560 sucks the liquid in the pipeline between the connection position of the second exhaust valve 583 and the transition pipeline 572 to the inlet of the vacuum pump 560, the one-way valve 595 can not only prevent the liquid from flowing from the second pipeline 550 flows to the energy transfer tube 590, and can also prevent the gas from flowing from the second pipeline 550 to the energy transfer tube 590, thereby preventing the gas in the pipeline from flowing into the transition pipeline 572, the energy transfer tube 590, and being parallel to the transition pipeline 572. An ineffective gas circulation is formed in the provided vacuum pump 560 .

In the draining mode of the cooking device, when the vacuum pump 560 drains the residual liquid in the pipeline system 530 (i.e., the draining process), the setting of the one-way valve 595 can prevent the flow of liquid output from the vacuum pump outlet pipe 564. Energy transfer tube 590.

As shown in Figures 5A, 5B, and 5C, in some embodiments, the connection position of the second exhaust valve 583 and the pipeline in the pipeline system 530 can be set between the one-way valve 595 and the energy transfer tube 590. On the pipeline (shown as point B in Figure 5A, Figure 5B and Figure 5C). In some embodiments, the physical location of point B can be higher than the highest point of the liquid level in the liquid storage tank and piping system 530 , so that the liquid in the liquid storage tank or the liquid in the piping system 530 cannot reach the second row. air valve 583 to prevent liquid from leaking from the second exhaust valve 583. At the same time, this setting can also increase the height difference between the second exhaust valve 583 and the vacuum pump 560 as much as possible to increase the initial pressure difference between the second exhaust valve 583 and the vacuum pump 560 to facilitate the vacuum pump 560 from the second row. Exhaust air at valve 583. In one or more embodiments of this specification, the comparison between a certain point position and the highest point of the liquid level in the pipeline system 530 can be understood as a physical position comparison. For example, the piping system 530 or the cooking device 100 is placed on a certain placement plane. In this state, the position of a certain point is compared with the highest point of the liquid level in the piping system 530 in the direction perpendicular to the placement plane.

Continuing to refer to FIG. 5A, FIG. 5B and FIG. 5C, in some embodiments, the pipeline system 530 may also include a second exhaust valve pipeline 584, and one end of the second exhaust valve pipeline 584 may be connected to the second exhaust gas. Valve 583 (the connection position is shown as point E in Figure 5A, Figure 5B, and Figure 5C), the other end of the second exhaust valve pipeline 584 can be connected to the one-way valve 595 and the energy transfer pipe 590 on the pipeline. Point B position. The second exhaust valve pipeline 584 is mainly used to connect the second exhaust valve 583 and the pipeline system 530 .

Similar to the setting position of the first exhaust valve 581, in some embodiments, the connection position of the second exhaust valve 583 and the second exhaust valve pipeline 584 (point E in Figure 5A) may also be high. The highest point of the liquid level in the liquid storage tank and piping system 530. In some embodiments, the control switch of the second exhaust valve 583 is higher than the highest point of the liquid level in the liquid storage tank and pipeline system 530 (or the right half area 533). In some embodiments, the control switch of the second exhaust valve 583 is higher than point B in the pipeline system.

In some embodiments, the first exhaust valve 581 and the second exhaust valve 583 may be different exhaust valves. In some embodiments, the first exhaust valve 581 and the second exhaust valve 583 may be the same exhaust valve. For example, in some embodiments, the same exhaust valve may have a first interface and a second interface. The first interface is connected to the first pipeline 540 (for example, point A on the first pipeline 540), and the second interface A pipe connected between the one-way valve 595 and the energy transfer pipe 590 (for example, point B on the transition pipe 572). For another example, the same exhaust valve has only one interface, and the interface of the exhaust valve is connected to the first pipeline 540 and the transition pipeline 572 between the one-way valve 595 and the energy transfer pipe 590 through a tee pipe.

As shown in Figure 3, in some embodiments, when the pipeline system 330 only includes a vacuum pump 360 and not a water pump, the vacuum pump 360 can have both a gas pumping function and a liquid pumping function. The first pipeline 340, the vacuum pump 360, The energy transfer pipe 390, the one-way valve 395, and the second pipeline 350 may be connected in sequence, the first exhaust valve 381 may be provided in the first pipeline 340, and the second exhaust valve may not be provided. When the pipeline system 330 is working, the first exhaust valve 381 is closed, the vacuum pump 360 is started, and the liquid in the liquid storage tank is pumped into the first pipeline 340. The liquid passes through the first pipeline 340 and the vacuum pump 360 in sequence and then enters the energy transfer Pipe 390, the liquid in the energy transfer pipe 390 can complete energy transfer (heating/cooling). The liquid discharged from the energy transfer pipe 390 passes through the one-way valve 395 and enters the second pipeline 350, and finally returns to the liquid storage tank 320. Complete One cycle. When the vacuum pump 360 stops working, the liquid circulation between the liquid storage tank and the piping system 330 stops, and the liquid in the liquid storage tank no longer enters the piping system 330. The first exhaust valve 381 is opened and connected to the outside world. At this time, the first pipe The liquid in the path between the inlet end 341 of the path 340 and point A will return to the liquid storage tank from the inlet end 341 of the first pipeline 340 under the action of gravity. The vacuum pump 360 works and pumps the liquid in the first pipe 340 in the section between point A and the inlet of the vacuum pump 360 through the self-priming function, so as to move point A to the first pipe 340 in the section between the inlet of the vacuum pump 360 The residual liquid is extracted, and the liquid passes through the vacuum pump 360, the energy transfer tube 390, the one-way valve 395, the second pipeline 350, and finally enters the liquid storage tank, thereby completing the discharge of the residual liquid in the pipeline system 330.

Continuing to refer to Figures 5A, 5B and 5C, after the liquid in the pipeline system 530 is discharged from the pipeline system 530 through the vacuum pump 560, an air section will be formed in the pipeline system 530 and the water pump 570, and the cooking equipment is started again for cooking. At this time, the cooking device enters the liquid suction mode, exhausts the air, and introduces water into the water pump 570 so that the water pump 570 can work. At this time, the exhaust function of the vacuum pump 560 can be used to exhaust the air in part of the pipeline system 530 (for example, the pipeline between the inlet end 541 of the first pipeline 540 and the water pump 570) and the water pump 570. When exhausting through the vacuum pump 560, first close the first exhaust valve 581 and the second exhaust valve 583, then start the vacuum pump 560 (the water pump 570 is still closed at this time), and use the self-priming function of the vacuum pump 560 to remove the first exhaust valve. The pipeline between the inlet end 541 of the pipeline 540 and the water pump 570 and the air in the water pump 570 are sucked into the vacuum pump 560 and discharged to the liquid storage tank, so that the pressure in this section of pipeline is less than the liquid pressure in the liquid storage tank, and the vacuum pump 560 A suction force is generated on the liquid in the liquid storage tank, and the liquid in the liquid storage tank is pumped to the water pump 570 through the first pipeline 530 under the action of suction (i.e., liquid suction mode), so that a certain amount of liquid (for example, filled or reaches a preset liquid volume). The self-priming process of the vacuum pump 560 may include first sucking out the gas in the pipeline before the water pump 570, and then the liquid in the liquid storage tank enters the pipeline system 530 from the liquid storage tank through the outlet of the liquid storage tank under the action of negative pressure. into the first pipeline 540, thereby entering the water pump 570. In some embodiments, the duration of the self-priming process of the vacuum pump 560 is 5 seconds to 12 seconds. In some embodiments, the duration of the self-priming process of the vacuum pump 560 is 8 seconds to 10 seconds. For example, the duration of the self-priming process of the vacuum pump 560 is 8 seconds.

When the water pump 570 is filled with liquid or partially filled with liquid, that is, when the self-priming process of the vacuum pump 560 ends, the cooking device enters the operating mode, the water pump 570 is started, and the vacuum pump 560 can be shut down immediately, or it can continue to work for a period of time and then shut down (for example, The vacuum pump 560 can be turned off 1 to 3 seconds after the water pump 570 is started, so as to purge the air in the water pump 570). At the same time as the water pump 570 is started or 3 seconds to 15 seconds (for example, 5 seconds) after the water pump 570 is started, the energy transfer tube 590 is started. In some embodiments, the energy transfer tube 590 is activated at the same time as the water pump 570 is activated or 5 seconds to 10 seconds after the water pump 570 is activated. In some embodiments, the energy transfer tube 590 is activated at the same time as the water pump 570 is activated or 6 to 8 seconds after the water pump 570 is activated. After the water pump 570 filled with liquid or partially filled with liquid is started, the water pump 570 can move the liquid in the liquid storage tank along the first pipeline 540, the water pump 570, the energy transfer pipe 590, the one-way valve 595, and the second pipeline 550. A pipeline (which can be called an effective liquid path) flows and flows back into the liquid storage tank to realize liquid circulation between the liquid storage tank and the pipeline system 530 . There is an energy transfer tube 590 in the effective liquid path, which can heat or cool the liquid flowing through the effective liquid path, and then discharge the heated or cooled liquid into the liquid storage tank, thereby heating the liquid in the liquid storage tank. or refrigeration control, so as to achieve accurate control of the temperature of the liquid in the liquid storage tank during the cycle heating or refrigeration process, thereby enabling the food ingredients (for example, steak, chicken, shrimp, etc.) placed in the liquid storage tank to be controlled Cook over low heat. The reason why the vacuum pump 560 needs to be shut down when the water pump 570 is started may be to prevent the liquid drawn by the vacuum pump 560 from the liquid storage tank from affecting the temperature of the liquid pumped by the water pump 570 to the energy transfer tube 590 for heating. In some embodiments, even if the vacuum pump 560 is in a closed state, a small amount of liquid may pass through the first pipeline 540, the water pump 570, the vacuum pump water inlet pipeline 562, the vacuum pump 560, the vacuum pump water outlet pipeline 564, and the second pipeline 550. A pipeline (which can be called an invalid liquid path) returns to the liquid storage tank. In some embodiments, additional valves may be provided on the vacuum pump water inlet pipe 562 and/or the vacuum pump water outlet pipe 564. When the control component receives a signal that the vacuum pump 560 stops working, the control valve is closed to prevent liquid from not passing through the energy transfer pipe 590. The heating or cooling process is directly returned to the liquid storage tank through the vacuum pump water inlet pipe 562, the vacuum pump 560, the vacuum pump water outlet pipe 564, and the second pipe 550. In some embodiments, a corresponding compensation algorithm can also be added to the control algorithm of the pipeline system 530 to achieve precise control of the temperature of the liquid in the liquid storage tank.

When the cooking equipment enters the liquid drainage mode, the water pump 570 stops working and the vacuum pump 560 starts working. When the water pump 570 stops working and the liquid circulation between the liquid storage tank and the pipeline system 530 stops, the liquid in the liquid storage tank no longer enters the pipeline system 530 . When the water pump 570 stops working or after a preset time interval, the vacuum pump 560 in the closed state is started, and the exhaust valve is opened for drainage. The first exhaust valve 581 and the second exhaust valve 583 are opened, and point A and point B of the pipeline system 530 are respectively connected to the outside atmosphere. At this time, the liquid in the passage between the inlet end 541 of the first pipeline 540 and point A will return to the liquid storage tank from the inlet end 541 of the first pipeline 540 under the action of pressure and gravity, and from point B to the second The liquid in the passage between the outlet ends 551 of the pipeline 550 will enter the liquid storage tank from the outlet end 551 of the second pipeline 550 under the action of pressure and gravity. Regarding the details of the liquid entering the liquid storage tank in the above two different situations, Please refer to the relevant descriptions of the entrance channel 723 and the exit channel 725 in Figure 7 for content. When the vacuum pump 560 is working, it can pump liquid through the self-priming function, thereby extracting the liquid in the first pipeline 540 in the section between point A and point D; at the same time, the vacuum pump 560 can also pump the liquid in the section between point B and point D. Residual liquid in the road section (it should be noted that the energy transfer tube 590 can be provided in the pipeline between point B and point D). The extracted liquid enters the second pipeline 550 through the vacuum pump inlet pipe 562, the vacuum pump 560, and the vacuum pump outlet pipe 564, and is finally transported to the liquid storage tank to complete the discharge of the residual liquid in the pipeline system 530 (ie, the liquid drainage process).

In some embodiments, the pipeline system (eg, pipeline system 130 or 530) may also include a bracket (not shown in the figure), a vacuum pump (eg, vacuum pump 160 or 560), an energy transfer tube (eg, an energy transfer tube) At least one of the tubes 590) is located on the bracket. The bracket can provide an installation platform for the piping system and provide fixed support for the piping system. At the same time, the setting of the bracket also facilitates the stereotyped layout of the pipelines in the piping system and reduces the difficulty of routing the pipelines.

Referring to FIGS. 5B-5C , in some embodiments, the pipelines in the pipeline system 530 can be connected to each other, and the pipelines to the water pump 570 and/or the vacuum pump 560 can be connected through silicone tubes. The sealed connection of the pipeline system 530 can be achieved by connecting different structures and/or pipelines through silicone tubes. Illustratively, the connection structure of the energy transfer tube 590 in the pipeline system 530 is taken as an example to describe the connection of each component in the pipeline system 530 . Please refer to Figures 6A, 6B and 6C. Figure 6A is a schematic diagram of the connection structure between the energy transfer tube and the second pipeline according to some embodiments of this specification. Figure 6B is a schematic diagram of the energy transfer tube and the second pipeline according to some embodiments of this specification. A schematic structural diagram of the connection between the tube port and the silicone tube. Figure 6C is a schematic structural diagram of the clamp shown in some embodiments of this specification.

As shown in FIGS. 6A , 6B and 6C , in some embodiments, the energy transfer tube 690 is disposed at the same position as the energy transfer tube 590 . The inlet and/or outlet of the energy transfer tube 690 can be connected to the transition pipeline 672 through the silicone tube 691 respectively. The silicone tube 691 is set outside the inlet (and outlet) of the energy transfer tube 690 and is fixed by a clamp 692 (as shown in Figure 6C). The connection method between the silicone tube 691 and the transition pipe 672 can refer to the connection method between the silicone tube 691 and the inlet and/or outlet of the energy transfer tube 690 . The energy transfer tube 690 and the transition pipeline 672 are connected through the silicone tube 691 and the clamp 692, thereby achieving a sealed connection between the energy transfer tube 690 and the transition pipeline 672 in the pipeline system.

In some embodiments, the unilateral interference between the silicone tube and the pipe may include 0.3 mm to 1 mm. In some embodiments, the unilateral interference between the silicone tube and the pipe may include 0.5 mm to 1 mm. In some embodiments, the unilateral interference amount between the silicone tube and the pipe may include 0.6 mm to 0.8 mm. The setting of the interference fit between the silicone tube and the pipeline can, on the one hand, make the connection between the silicone tube and the pipeline stronger and less likely to fall off. On the other hand, it can also enhance the sealing of the connection between the silicone tube and the pipeline and reduce the leakage of liquid from the connection. risks of.

Referring to FIG. 1 , in some embodiments, the inlet end of the first pipeline 140 may be connected to the outlet part 124 of the liquid storage tank 120 , and the outlet end of the second pipeline 150 may be connected to the inlet part 122 of the liquid storage tank 120 . The outlet portion 124 of the liquid storage tank 120 can be understood as the opening on the liquid storage tank 120 that allows liquid to flow out of the liquid storage tank 120 . The inlet portion 122 of the liquid storage tank 120 can be understood as the opening on the liquid storage tank 120 through which liquid flows into the liquid storage tank 120 . The liquid in the liquid storage tank 120 can flow out through the outlet 124 of the liquid storage tank 120, enter the pipeline system 130 from the inlet end of the first pipeline 140, enter the second pipeline 150 after passing through the vacuum pump 160, and exit from the second pipeline 150. The outlet end of the path 150 flows out and enters the liquid storage tank 120 through the inlet 122 of the liquid storage tank 120 to complete a liquid cycle.

In some embodiments, the connection between the first pipeline 140 and the outlet 124 of the liquid storage tank 120 may be a detachable connection, and the connection between the second pipeline 150 and the inlet 122 of the liquid storage tank 120 may also be a detachable connection. The detachable connection allows the inlet and outlet ends of the piping system 130 to be freely disassembled and assembled with the liquid storage tank 120. On the one hand, the installation and replacement of the piping system 130 is more convenient; on the other hand, the piping system 130 The connection is more flexible, and the pipeline system 130 can extract liquids from different liquid storage tanks 120 or transport liquids to different liquid storage tanks 120 according to different situations. In some embodiments, the detachable connection method includes but is not limited to snap connection, threaded connection, bolt connection, etc.

In some embodiments, the first pipeline 140 and the outlet 124 of the liquid storage tank 120 can be connected in a sealed manner, and the second pipeline 150 and the inlet 122 of the liquid storage tank 120 can also be connected in a sealed manner. Ensuring the sealing between the liquid storage tank 120 and the pipeline system 130 not only reduces the risk of liquid leakage in the pipeline system 130, but also can well isolate the liquid in the pipeline system 130 from the external environment to reduce the risk of leakage. The external environment may contaminate or denature the liquid in the pipeline system 130 . At the same time, the setting of the sealed connection also allows the inside of the pipeline system 130 to have better sealing performance, thereby providing a suitable working environment for the vacuum pump 160. The vacuum pump 160 can evacuate the inside of the pipeline system 130, thereby connecting the first The liquid at the outlet 124 of the liquid storage tank 120 connected to the inlet end of the pipeline 140 is sucked into the pipeline system 130 for pumping and transporting the liquid. In some embodiments, the sealing connection may include but is not limited to setting a sealing ring, glue sealing, etc.

Since the arrangement of the vacuum pump (eg, vacuum pump 160 or 560) can provide multiple possibilities for the relative positional relationship between the pipeline system (eg, pipeline system 130 or 530) and the liquid storage tank (eg, liquid storage tank 120), This makes the overall layout of the cooking device 100 more flexible. The location of the pipeline system (such as the pipeline system 130 or 530) may not be limited to the bottom of the liquid storage tank. For example, the piping system 130 in Figure 1 can be disposed on the side of the liquid storage tank 120. At this time, the piping system 130 can be connected to the liquid storage tank 120 through the inlet 122 and the outlet 124 on the side wall of the liquid storage tank 120. . For another example, the pipeline system 130 in FIG. 1 may also be at least partially disposed on the side of the liquid storage tank 120 . For example, the first pipeline 140 of the pipeline system 130 in FIG. 1 may be disposed at the bottom of the liquid storage tank 120, and the vacuum pump 160 and the second pipeline 150 may be disposed on the side of the liquid storage tank 120. At this time, the outlet portion 124 of the liquid storage tank 120 can be disposed on the bottom wall of the liquid storage tank 120 and communicate with the first pipeline 140 , and the inlet portion 122 can be disposed on the side wall of the liquid storage tank 120 and communicate with the second pipeline 150 .

In some embodiments, referring to FIG. 1 , the connection between the liquid storage tank 120 and the piping system 130 may be a detachable connection, and the connection method includes but is not limited to a threaded connection, a snap connection, etc., and the detachable connection can facilitate the piping. Replacement and connection of the road system 130. In other embodiments, the connection between the liquid storage tank 120 and the pipeline system 130 can also be other connection methods, such as glue connection, integrated molding, etc. For the specific connection method between the liquid storage tank 120 and the pipeline system 130, please refer to the related description of the first pipeline 140 and the second pipeline 150 later.

Figure 7 is a schematic structural diagram of the inlet and outlet of the liquid storage tank according to some embodiments of this specification. As shown in FIG. 7 , in some embodiments, the outlet portion 724 and the inlet portion 722 may be disposed on the side wall of the liquid storage tank 720 . In some embodiments, the outlet portion 724 and the inlet portion 722 may be disposed on the same side wall of the liquid storage tank 720 . In other embodiments, the outlet portion 724 and the inlet portion 722 can also be disposed on different side walls. In some embodiments, the outlet portion 724 and the inlet portion 722 can also be disposed at the bottom of the liquid storage tank 720 .

In some embodiments, the outlet portion 724 can be used to allow liquid to flow out of the liquid storage tank 720 , and the inlet portion 722 can be used to allow liquid to flow into the liquid storage tank 720 . In some embodiments, the number of outlets of the outlet portion 724 and the number of inlets of the inlet portion 722 may be one or more. The number of outlets of the outlet part 724 and the number of inlets of the inlet part 722 may be the same or different. For example, the outlet part 724 may have three outlets, and the inlet part 722 may have two inlets.

In some embodiments, the outlet portion 724 may include a lower outlet 724-1, an upper outlet 724-2, and an outlet channel 725 connecting the lower outlet 724-1 and the upper outlet 724-2. The upper outlet 724-2 can be connected with the first pipeline of the pipeline system. The liquid in the liquid storage tank 720 enters the outlet channel 725 from the lower outlet 724-1, and enters the first pipeline through the upper outlet 724-2.

In some embodiments, the lower outlet 724-1 may include a first lower outlet 724-1-1 and a second lower outlet 724-1-2, and the outlet channel 725 may include a first outlet channel 725-1 and a second outlet channel 725. -2; the first exit passage 725-1 connects the first lower exit 724-1-1 and the upper exit 724-2; the second exit passage 725-2 connects the second lower exit 724-1-2 and the upper exit 724-2 . The liquid in the liquid storage tank 720 enters the first outlet channel 725-1 from the first lower outlet 724-1-1, and enters the second outlet channel 725-2 from the second lower outlet 724-1-2, and finally the first outlet The liquid in the channel 725-1 and the second outlet channel 725-2 enters the first pipeline through the upper outlet 724-2.

In some embodiments, the first outlet channel 725-1 and the second outlet channel 725-2 partially overlap, so that the outlet channel 725 is Y-shaped, so the first outlet channel 725-1 and the second outlet channel 725-2 can Sharing one upper outlet 724-2 eliminates the need to provide multiple upper outlets 724-2. At the same time, the first pipeline of the pipeline system only needs to be provided with a corresponding inlet end. On the one hand, it not only reduces the amount of liquid storage The processing difficulty of the box 720 also makes the layout and setting of the piping system more convenient and simple.

In some embodiments, the inlet portion 722 may include a lower inlet 722-1, an upper inlet 722-2, and an inlet channel 723 connecting the lower inlet 722-1 and the upper inlet 722-2. The upper inlet 722-2 can be connected with the outlet end of the second pipeline of the pipeline system. The liquid entering the pipeline system from the outlet 724 of the liquid storage tank 720 is pumped by the pump body, discharged from the second pipeline, enters the inlet channel 723 through the upper inlet 722-2, and enters the reservoir through the lower inlet 722-1. Liquid tank 720, thereby completing a liquid cycle.

Continuing to refer to FIG. 7 , in some embodiments, when the inlet portion 722 and the outlet portion 724 are both disposed on the same side wall of the liquid storage tank 720 , at least part of the inlet channel 723 is located between the first outlet channel 725 - 1 and the second outlet. between the channels 725-2, so that the inlet channel 723 and the outlet channel 725 are integrated and distributed, reducing the space occupied by the inlet channel 723 and the outlet channel 725, and facilitating the processing of the liquid storage tank 720.

In some embodiments, when the inlet portion 722 and the outlet portion 724 are both disposed on the same side wall of the liquid storage tank 720, the lower inlet 722-1 of the inlet portion 722 may be located below the lower outlet 724-1 of the outlet portion 724, This allows the liquid after being transferred and treated by the pipeline system 130 to be better mixed with the liquid before treatment, and at the same time, the interference between the liquid inlet from the lower inlet 722-1 and the liquid outflow from the lower outlet 724-1 is reduced.

The cooperation between the pipeline system 530 and the liquid storage tank 720 will be described below with reference to FIGS. 5A-5C and FIG. 7 . Please refer to Figures 5A, 5B, 5C and 7. When the water pump 570 stops working and the liquid circulation between the liquid storage tank 720 and the piping system 530 stops, the liquid in the liquid storage tank 720 no longer enters the piping system 530. And the first exhaust valve 581 and the second exhaust valve 583 are opened. Since the first exhaust valve 581 is connected to the atmospheric pressure, the liquid in the first pipeline 540 between the outlet 724 (corresponding to the inlet end 541 of the first pipeline 540) and point A will pass through under the action of pressure and gravity. The inlet end 541 flows back into the outlet channel 725, and the liquid inside the outlet channel 725 falls into the liquid storage tank 720 until the liquid level in the outlet channel 725 is flush with the liquid level in the liquid storage tank 720, so that the liquid storage tank 720 The liquid flow between the outlet channel 725 and the inlet end 541 of the piping system 530 is disconnected, but at this time, the liquid storage tank 720 and the inlet end 541 of the piping system 530 are still in a sealed connection state. Similarly, since the second exhaust valve 583 is strongly connected to the atmospheric pressure, the liquid in the pipe between the inlet 722 (corresponding to the outlet end 551 of the second pipe 550) and point B will pass through the outlet under the action of pressure and gravity. The end 551 enters the inlet channel 723 and then flows back to the liquid storage tank, and the liquid in the inlet channel 723 will fall until the liquid level is flush with the liquid level in the liquid storage tank 720 . Since point B is higher than the highest point of the liquid level in the liquid storage tank 720 and the pipeline system 530, and the second exhaust valve is opened so that the atmospheric pressure at point B is higher than the pressure supplied to the pipeline from the liquid storage tank 720, the pipeline system The outlet end 551 of 530 and the inlet channel 723 of the liquid storage tank 720 will be in a "liquid disconnection" state, and the liquid will flow back to the liquid storage tank 720 under the action of gravity. When the vacuum pump 560 starts working, the vacuum pump 560 can suck the liquid in the first pipeline 540 in the section between point A and point D and the transition pipeline 572 in the section between point B and point D through the self-priming function. The sucked liquid enters the inlet channel 723 through the vacuum pump 560, the vacuum pump outlet pipe 564, the second pipe 550, and the outlet end 551 (inlet part 722), and then enters the liquid storage tank 720.

Referring to FIG. 1 for example illustration, this specification also provides a pipeline system 130 , which mainly includes a first pipeline 140 , a second pipeline 150 and a vacuum pump 160 . The vacuum pump 160 is disposed between the first pipeline 140 and the second pipeline 150; the first pipeline 140 is connected to the inlet of the vacuum pump 160, and the second pipeline 150 is connected to the outlet of the vacuum pump 160. For more descriptions of the pipeline system 130 , the first pipeline 140 , the second pipeline 150 and the vacuum pump 160 , please refer to the relevant descriptions of the pipeline system 130 in other parts of this specification, which will not be described again here.

Referring to FIG. 1 for illustration, this specification also provides another cooking device 100 . The cooking device 100 includes a liquid storage tank 120 and a pipeline system 130 connected with the liquid storage tank 120 . The pipeline system 130 includes a first pipeline 140, a second pipeline 150 and a first pump body. The first pump body is disposed between the first pipeline 140 and the second pipeline 150 . The first pipeline 140 is connected to the inlet of the first pump body, and the second pipeline 150 is connected to the outlet of the first pump body. In some embodiments, the first pump body may include the above-mentioned vacuum pump 160. In some embodiments, in order to prevent the liquid temperature (eg, high temperature) from affecting the startup of the vacuum pump 160, the high-temperature liquid may be controlled not to flow through the vacuum pump 160 during the cooking process. For example, a valve can be provided on a branch of the vacuum pump 160 and before the inlet of the vacuum pump 160. When the valve is closed, the liquid can be prevented from flowing through the vacuum pump 160. In some embodiments, in order to prevent the liquid temperature (eg, high temperature) from affecting the startup of the vacuum pump 160, the vacuum pump 160 may use a vacuum pump with strong heat resistance.

In some embodiments, the working state of the valve disposed before the inlet of the vacuum pump 160 is determined by the operating state of the vacuum pump 160 . For example, when the vacuum pump 160 is running, the valve may be in an open state; when the vacuum pump 160 stops running, the valve may be in a closed state. In some embodiments, when the vacuum pump 160 stops running, a small amount of liquid may still flow through the vacuum pump 160. At this time, the valve in front of the inlet of the vacuum pump 160 can be controlled to be closed, thereby preventing liquid from flowing through the vacuum pump 160.

In some embodiments, the value range of the ratio between the water circulation flow rate of the piping system 130 and the volume of the liquid storage tank 120 may include 1:6-1:1, so that the entire liquid in the liquid storage tank 120 can be kept at a relatively low temperature. The processing is completed through the pipeline system 130 in a short period of time. In some embodiments, the value range of the ratio between the water circulation flow rate of the pipeline system 130 and the volume of the liquid storage tank 120 may include 1:5-1:2.5. In some embodiments, the value range of the ratio between the water circulation flow rate of the pipeline system 130 and the volume of the liquid storage tank 120 may include 1:4.5-1:2. For example, if the water circulation flow rate of the piping system is 5.4L/min and the volume of the liquid storage tank is 12L, the ratio between the water circulation flow rate of the piping system and the volume of the liquid storage tank is 0.45. For example, when the pipeline system 130 can heat the passing liquid, the above proportion range can increase the heating rate of the liquid in the liquid storage tank 120, shorten the time that the entire liquid in the liquid storage tank 120 needs to be heated, and reduce the heating time of the liquid storage tank 120. The heat of the liquid in the liquid storage tank 120 is lost, which improves the stability of the temperature of the liquid in the liquid storage tank 120 and enables precise temperature control in the liquid storage tank 120 . In some embodiments, the water circulation flow rate of the pipeline system 130 may refer to the total volume flow rate of the liquid in the circulation system when the pipeline system 130 performs liquid circulation. The total flow rate of piping system 130 may be determined by a variety of factors. In some embodiments, the water circulation flow rate of the pipeline system 130 can be determined by the water pump flow rate, the cross-sectional area of the host pipeline, the conduction flow rate of the pipeline cross-section connecting the outlet and the inlet of the liquid storage tank, and the flow rate of the side wall of the liquid storage tank. It is determined by one or more factors such as the cross-sectional area of the outlet part and the inlet part. In some embodiments, the ratio between the flow rate of the water pump and the volume of the liquid storage tank may range from 1:6 to 1:1. In some embodiments, the ratio between the flow rate of the water pump and the volume of the liquid storage tank may range from 1:5 to 1:2.5. In some embodiments, the ratio between the flow rate of the water pump and the volume of the liquid storage tank may range from 1:4.5 to 1:2. In some embodiments, the volume of the liquid storage tank 120 may be the volume of liquid that the liquid storage tank 120 can hold. In some embodiments, the volume of the liquid storage tank 120 may be the volume of liquid corresponding to the highest liquid level line in the liquid storage tank 120 .

In some embodiments, the flow rate of the vacuum pump may range from 1L/min to 2.5L/min. In some embodiments, the flow rate of the vacuum pump may range from 1.25L/min to 2.25L/min. In some embodiments, the flow rate of the vacuum pump may range from 1.5L/min to 2L/min. As an example only, the flow rate of the vacuum pump is 1.5L/min. In some embodiments, the flow rate of the water pump may range from 3L/min to 10L/min. In some embodiments, the flow rate of the water pump may range from 4L/min to 9L/min. In some embodiments, the flow rate of the water pump may range from 5L/min to 8L/min. In some embodiments, the flow rate of the water pump may range from 6L/min to 7L/min. For exemplary description only, the flow rate of the water pump may be 8L/min.

In some embodiments, the cooking device 100 may also have a first operating mode and a second operating mode. When the cooking device 100 operates in the first working mode, the first pump body operates to introduce the liquid in the liquid storage tank 120 into the pipeline system 130 for circulation. When the cooking device 100 operates in the second working mode, the first pipeline 140 is connected to atmospheric pressure, and the first pump is operated to discharge the liquid in the pipeline system 130 into the liquid storage tank 120 . In some embodiments, the first operating mode of the cooking device 100 may correspond to the suction mode and operating mode mentioned elsewhere in this specification. In some embodiments, the second operating mode of the cooking device 100 may correspond to the drain mode mentioned elsewhere in this specification.

In some embodiments, the first pump body has a pump body with a pumping function. For example, the first pump body may include a vacuum pump 160 .

In some embodiments, the cooking device 100 may further include a first exhaust valve, and the first exhaust valve may be connected to the first pipeline 140 or the second pipeline 150. When the cooking device operates in the second working mode, The first exhaust valve may be opened to communicate at least one of the first pipeline 140 or the second pipeline 150 with atmospheric pressure.

When the cooking device 100 is in a cooking state, the cooking device 100 may operate in the first working mode; when a preset instruction is detected, the first working mode switches to the second working mode. In some embodiments, the preset instruction may include a cooking end instruction or a start instruction of the second working mode. In some embodiments, the preset instruction may be detected by the control component 110 .

In some embodiments, the cooking device 100 may further include an energy transfer tube and a second exhaust valve. The energy transfer tube is connected in series with the first pump body. The second exhaust valve is provided between the energy transfer pipe and the second pipeline 150 . When the cooking device is operating in the second working mode, the second exhaust valve can be opened to connect the second pipeline 150 with atmospheric pressure to cooperate with the vacuum pump 160 to suck the liquid in the energy transfer tube and discharge it from the second pipeline 150 into the liquid storage tank 120.

In some embodiments, the cooking device 100 may further include a second pump body, which is mainly used to drive the liquid in the pipeline system 130 to flow. The second pump body is connected in series with the first pump body, and the second pump body can be at least used to operate in the first working mode. In some embodiments, the second pump body operates in a run mode. In some embodiments, the second pump body refers to a pump body with a liquid pumping function. For example, the second pump body may include a water pump. For example, the second pump body may include a vacuum pump that also has a liquid pumping function. In some embodiments, the first pump body and the second pump body may be the same pump body (for example, the first pump body and the second pump body are both vacuum pumps), or they may be different pump bodies (for example, the first pump body The pump body is a vacuum pump, and the second pump body is a water pump). In this specification, the first pump body introducing liquid into the pipeline system 130 means that the first pump body introduces liquid into the second pump body of the pipeline system 130 .

Since the first pump body is mainly used to introduce the liquid in the liquid storage tank 120 into the second pump body of the pipeline system 130, the flow rate of the first pump body can be smaller; the second pump body is mainly used to drive the pipeline system. The liquid in 130 flows. In order to make all the liquid in the liquid storage tank 120 pass through the pipeline system 130 in a short time, the flow rate of the second pump body needs to be larger. Therefore, in some embodiments, the second pump body The flow rate can be greater than the flow rate of the first pump body.

In some embodiments, when the cooking device 100 is in the first working mode, the first pump body may be started before the second pump body. The first pump body (eg, vacuum pump) started first can introduce liquid into the second pump body (eg, water pump), providing appropriate starting conditions for the second pump body (eg, water pump). In some embodiments, the first pump body is started in the liquid suction mode to introduce liquid into the second pump body. When the liquid in the second pump body meets the operating conditions of the second pump body, the cooking device enters the operating mode. , the second pump body operates in the operating mode; after the cooking equipment enters the liquid drainage mode, the first pump body starts to drain liquid.

In some embodiments, when the cooking device 100 is in the second working mode, the first pump body may be closed later than the second pump body. After the second pump body (for example, a water pump) is closed, the liquid in the liquid storage tank 120 is no longer pumped into the pipeline system 130. At this time, the first pump body (for example, a vacuum pump) can discharge the residual liquid from the pipeline system 130. The piping system is closed after 130 seconds.

In some embodiments, the cooking device 100 may include only the first pump body. In some embodiments, the cooking device 100 may include a first pump body and a second pump body. When the first pump body has both a gas pumping function and a liquid pumping function, the cooking device 100 may only include the first pump body. When the first pump body only has a gas pumping function, or has a gas pumping function or a liquid pumping function at the same time, the cooking device 100 may include a first pump body and a second pump body.

In some embodiments, when the cooking device 100 operates in the liquid suction mode, the first pump body operates to pump liquid from the first pipeline 140 to the second pipeline 150 .

In some embodiments, the cooking device 100 may also have a second pump body. When the cooking device 100 is operating in the operating mode, the second pump body is operated to pump liquid from the first pipeline 140 to the second pipeline. 150 in.

Figure 8 is a control flow diagram of a piping system according to some embodiments of the present specification. In some embodiments, process 800 may be performed by control assembly 110 of cooking device 100 or piping system 130 . For example, the process 800 may be implemented as stored in the cooking device 100 or the control component 110 of the piping system 130 , or in a memory external to the control component 110 and accessible by the piping system 130 or the control component 110 of the piping system 130 instruction set (e.g., application program). The control assembly 110 of the cooking device 100 or piping system 130 may execute a set of instructions and, upon executing the instructions, may be configured to perform process 800 . The operations of process 800 presented below are intended to be illustrative. In some embodiments, the process may be accomplished utilizing one or more additional operations not described above and/or one or more operations not discussed above. Additionally, the order of operations of process 800 shown in FIG. 8 and described below is not intended to be limiting.

Step 810: Control the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline. In some embodiments, step 810 may be performed by the control component 110 controlling the first pump body.

In some embodiments, the second pump body may be a pump body for pumping liquid. In some embodiments, the second pump body may include a water pump (eg, water pump 170, water pump 470, water pump 570).

In some embodiments, taking the pipeline system 130 shown in FIG. 1 as an example, the second pump body can drive the flow of liquid from the first pipeline 140 to the second pipeline 150 . In some embodiments, the second pump body is a pump with the function of driving liquid flow. In some embodiments, the second pump body may be a water pump. In some embodiments, the second pump body may also be a vacuum pump with a liquid pumping function (eg, vacuum pump 160).

Step 820: Control the operation of the first pump body to allow liquid to enter the second pump body or at least to discharge the liquid in the first pipeline and the second pipeline. In some embodiments, step 820 may be performed by the control component 110 controlling the first pump body.

The first pump body is a pump body that at least has a pumping function. In some embodiments, taking the pipeline system 130 shown in FIG. 1 as an example, the first pump body can use its air extraction function to at least partially discharge the residual liquid in the pipeline system 130 from the pipeline system 130 . For example, the first pump body with the air extraction function combined with the design of the exhaust valve can at least partially discharge the residual liquid in the pipeline system 130 . In some embodiments, at least draining the liquid in the first pipeline 140 and the second pipeline 150 includes draining part of the residual liquid in the first pipeline 140 or the second pipeline 150 from the pipeline system 130 . In some embodiments, draining at least the liquid in the first pipeline 140 and the second pipeline 150 further includes at least partially draining the liquid remaining in all pipelines in the pipeline system 130 . In some embodiments, draining at least the liquid in the first conduit 140 and the second conduit 150 further includes at least partially draining the liquid in the energy transfer tube 190 in the conduit system 130 . In some embodiments, at least draining the liquid in the first pipeline 140 and the second pipeline 150 further includes causing the liquid in the water pump 170 or the vacuum pump 160 in the pipeline system 130 to at least partially discharge the pipeline system 130 . The specific implementation structure of at least partially draining the residual liquid in the pipeline system 130 from the pipeline system 130 in one or more of the foregoing implementations can be found in other parts of this specification. In some embodiments, after the liquid in the piping system 130 is discharged, an air section will be formed in the piping system 130 and the second pump body. The first pump body can use its air extraction function to separate the piping system 130 and the second pump body. The air section in the pump body is extracted, thereby introducing the liquid into the first pipeline 140, and then the liquid enters the second pump body.

In some embodiments, the first pump body includes a vacuum pump. In some embodiments, the first pump body may include a vacuum pump that only has a suction function. In some embodiments, the first pump body may include a vacuum pump with both air pumping and liquid pumping functions. In some embodiments, the first pump body and the second pump body may be the same. For example, the first pump body and the second pump body are both vacuum pumps, and the vacuum pumps have both air pumping and liquid pumping functions. In some embodiments, the first pump body and the second pump body may also be different. For example, the second pump body is a water pump, and the first pump body is a vacuum pump. In some embodiments, the second pump body may include a centrifugal pump, a plunger pump, or the like. In some embodiments, the first pump body may include a diaphragm pump or the like. In some embodiments, taking the piping system 130 shown in Figure 1 as an example, when the first pump body and the second pump body are the same, that is, the first pump body and the second pump body can both have air pumping functions. When the vacuum pump 160 has a liquid pumping function, step 810 may include: controlling the operation of the vacuum pump 160 to extract and pump liquid from the first pipeline 140 to the second pipeline 150 . Controlling the operation of the first pump body and causing the liquid to enter the second pump body in step 820 may include: controlling the operation of the vacuum pump 160 to allow the liquid to enter the vacuum pump 160 . Controlling the operation of the first pump body in step 820 to at least discharge the liquid in the first pipeline 140 and the second pipeline 150 may include: controlling the operation of the vacuum pump 160 to at least connect the first pipeline 140 to the second pipeline 150 The liquid in the pipeline system is discharged, thereby at least the residual liquid in the first pipeline 140 and the second pipeline 150 is discharged, reducing the amount of residual liquid in the pipeline system 130 and reducing the risk of contamination that may be caused by the residual liquid.

In some embodiments, when the second pump body is different from the first pump body, that is, the second pump body may be a water pump and the first pump body may be a vacuum pump. Step 810 may include: controlling the operation of the water pump to extract and pump liquid from the first pipeline to the second pipeline. Controlling the operation of the first pump body and causing the liquid to enter the first pump body in step 820 may include: controlling the operation of the vacuum pump to suction and pump the liquid to the water pump. Controlling the operation of the first pump body in step 820 to at least discharge the liquid in the first pipeline and the second pipeline may include: controlling the operation of the vacuum pump to at least discharge the liquid in the first pipeline and the second pipeline to Reduce the amount of residual liquid in the piping system.

It should be noted that the above description of process 800 is only for example and illustration, and does not limit the scope of application of this specification. For those skilled in the art, various modifications and changes can be made to process 800 under the guidance of this specification. However, such modifications and changes remain within the scope of this specification.

In some embodiments, the sub-steps included in step 820 may be: before controlling the operation of the second pump body to allow the liquid to enter the second pipeline from the first pipeline, control the operation of the first pump body to allow the liquid to enter the second pump. body, see step 910 in Figure 9 . In some embodiments, the sub-steps included in step 820 may be: after controlling the operation of the second pump body, control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline, see Figure Step 930 in 9. In some embodiments, the sub-steps included in step 820 may also be: before controlling the operation of the second pump body to allow the liquid to enter the second pipeline from the first pipeline, control the operation of the first pump body to allow the liquid to enter the second pipeline. Pump body; after controlling the operation of the second pump body, control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline, see

steps

910 and 930 in Figure 9 .

Figure 9 is another control flow diagram of a piping system according to some embodiments of this specification. In some embodiments, process 900 may be performed by control assembly 110 of cooking device 100 or piping system 130 . For example, the process 900 may be implemented as stored in the cooking device 100 or the control component 110 of the piping system 130 , or in a memory external to the control component 110 and accessible by the piping system 130 or the control component 110 of the piping system 130 . instruction set (e.g., application program). The control component 110 of the cooking device 100 or piping system 130 may execute a set of instructions and, upon executing the instructions, may be configured to perform process 900 . The operations of process 900 presented below are intended to be illustrative. In some embodiments, the process may be accomplished utilizing one or more additional operations not described above and/or one or more operations not discussed above. Additionally, the order of operations of process 900 shown in Figure 9 and described below is not intended to be limiting.

Step 910: Control the operation of the first pump body to allow liquid to enter the second pump body. Step 910 may be performed by the control component 110 controlling the first pump body.

In some embodiments, when the first pump body and the second pump body are different, the second pump body may include a water pump and the first pump body may include a vacuum pump. Taking the pipeline system 130 shown in FIG. 1 as an example, step 910 may include: before the water pump 170 works, controlling the operation of the vacuum pump 160 to suck the liquid to the water pump 170, thereby providing a working environment for the water pump 170 to start operation, So that the water pump 170 can work normally. Details regarding the operation of the vacuum pump 160 to pump liquid to the water pump 170 can be found in the previous description.

In some embodiments, when the first pump body and the second pump body are the same, the first pump body and the second pump body may both be vacuum pumps with both air pumping and liquid pumping functions. Step 910 may include operating the vacuum pump to suck the liquid to the vacuum pump.

Step 920: Control the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline. In some embodiments, step 920 may be performed by the control component 110 controlling the second pump body.

In some embodiments, when the first pump body and the second pump body are different, the second pump body may include a water pump and the first pump body may include a vacuum pump. Taking the pipeline system 130 shown in FIG. 1 as an example, step 920 may include: controlling the operation of the water pump 170 to extract and pump liquid from the first pipeline 140 to the second pipeline 150 .

In some embodiments, when the first pump body and the second pump body are the same, both the first pump body and the second pump body may be vacuum pumps with both air pumping and liquid pumping functions. Step 920 may include: controlling the operation of the vacuum pump to extract and pump the liquid from the first pipeline to the second pipeline.

Step 930: Control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline. In some embodiments, step 930 may be performed by the control component 110 controlling the first pump body.

In some embodiments, when the first pump body and the second pump body are different, the second pump body may include a water pump and the first pump body may include a vacuum pump. Taking the pipeline system 130 shown in Figure 1 as an example, step 930 may include: after the work of the water pump 170 is completed, controlling the operation of the vacuum pump 160 to at least discharge the liquid in the first pipeline 140 and the second pipeline 150, To reduce the amount of residual liquid in the pipeline system 130.

In some embodiments, when the first pump body and the second pump body are the same, both the first pump body and the second pump body may be vacuum pumps with both air pumping and liquid pumping functions. Step 930 may include: controlling the operation of the vacuum pump to discharge at least the liquid in the first pipeline and the second pipeline. Therefore, at least the residual liquid in the first pipeline and the second pipeline is discharged, and the amount of residual liquid in the pipeline system is reduced.

In some embodiments, when the pipeline system 130 includes an exhaust valve, when the water pump or vacuum pump is working, the exhaust valve also needs to be controlled so that the exhaust valve is in a preset state, so that the pipeline system can Be in normal working condition or fulfill preset requirements. For example, before controlling the operation of the first pump body to allow liquid to enter the second pump body, the exhaust valve needs to be controlled to be in a closed state, see step 1010 in Figure 10 . For example, before controlling the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline, the exhaust valve needs to be controlled to be in an open state, see step 1040 in Figure 10 .

Figure 10 is another control flow diagram of a piping system according to some embodiments of the present specification. In some embodiments, process 1000 may be performed by control assembly 110 of cooking device 100 or piping system 130 . For example, the process 1000 may be implemented as stored in the cooking device 100 or the control component 110 of the piping system 130 , or in a memory external to the control component 110 and accessible by the piping system 130 or the control component 110 of the piping system 130 instruction set (e.g., application program). The control component 110 of the cooking device 100 or piping system 130 may execute a set of instructions and, upon executing the instructions, may be configured to perform the process 1000. The operations of process 1000 presented below are intended to be illustrative. In some embodiments, the process may be accomplished utilizing one or more additional operations not described above and/or one or more operations not discussed above. Additionally, the order of operations of process 1000 shown in Figure 10 and described below is not intended to be limiting.

Step 1010, control the exhaust valve to be in a closed state. In some embodiments, step 1010 may be performed by control assembly 110 controlling the exhaust valve.

In some embodiments, the piping system may also include a vent valve, which may be used to optionally connect the piping system to outside air. The working status of the exhaust valve can be controlled according to the operating status of the pipeline system. For example, when the pipeline system needs to be drained, the exhaust valve can be controlled to be open. For another example, when the pipeline system needs to be vented to allow liquid to enter the second pump body, the vent valve can be controlled to be in a closed state. In some embodiments, after the pipeline system enters the working state, the exhaust valve can be controlled to be closed to ensure that liquid can enter the second pump body when the first pump body is running.

In some embodiments, the exhaust valve may include a first exhaust valve and a second exhaust valve. For related information about the first exhaust valve and the second exhaust valve, please refer to the first exhaust valve 581 and the second exhaust valve 581 . Description of valve 583. Step 1010 may include: controlling both the first exhaust valve and the second exhaust valve to be in a closed state.

Step 1020: Control the operation of the first pump body to allow liquid to enter the second pump body. Step 1020 may be performed by the control component 110 controlling the first pump body. For the specific content of step 1020, please refer to the relevant description of step 910 above, and will not be described again here.

In some embodiments, during the execution of step 1020, the running time of the first pump body includes 3 seconds to 15 seconds. In some embodiments, the running time of the first pump body in step 1020 may also include 4 seconds to 12 seconds. In some embodiments, the running time of the first pump body in step 1020 may also include 5 seconds to 10 seconds. In some embodiments, the running time of the first pump body in step 1020 may also include 6 seconds to 8 seconds.

In some embodiments, when the exhaust valve is in a closed state, the operation of the first pump body can suck and discharge the air in the pipeline between the inlet of the first pump body and the inlet end of the pipeline system, so that this section of pipeline The negative pressure after the vacuum is formed in the pump, thereby generating suction. Under the action of suction, the liquid enters the pipeline system from the inlet end of the pipeline system and then enters the second pump body.

Step 1030, control the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline. In some embodiments, step 1030 may be performed by the control component 110 controlling the second pump body. When the second pump body is running, it can drive liquid from the first pipeline into the second pipeline. The flow of liquid driven by the second pump body in the pipeline system may be cyclic until it is no longer desired that the liquid circulates in the pipeline system. For example, when the piping system is used in a cooking device, the circulation of liquid in the piping system can be stopped after the cooking process is completed. It can be understood that the first pump body can be controlled to be closed while the second pump body is running or after a certain period of time. The reasons for controlling the first pump body to close are as described above and will not be described again here.

When the first pump body and the second pump body are different, the second pump body may include a water pump, and the first pump body may include a vacuum pump. In some embodiments, taking the piping system 530 shown in FIGS. 5A-5C as an example, additional valves can also be provided on the vacuum pump water inlet pipe and/or the vacuum pump water outlet pipe. The valves can be used to prevent liquid from not passing through the energy source. The heating or cooling process of the transfer pipe 590 is directly returned to the liquid storage tank through the vacuum pump water inlet pipe 562, the vacuum pump 560, the vacuum pump water outlet pipe 564, and the second pipe 550.

Step 1040, control the exhaust valve to be in an open state. In some embodiments, step 1010 may be performed by control assembly 110 controlling the exhaust valve. In some embodiments, after the liquid circulation in the pipeline system is completed, in order to discharge the residual liquid in the pipeline system, the exhaust valve can be controlled to be in an open state to ensure that the first pump body can drain the pipeline system. .

In some embodiments, step 1040 may include: controlling both the first exhaust valve and the second exhaust valve to be in an open state.

Step 1050: Control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline. In some embodiments, step 1050 may be performed by the control component 110 controlling the first pump body.

In some embodiments, when the first pump body and the second pump body are different, the second pump body may include a water pump and the first pump body may include a vacuum pump. Step 930 may include: controlling the operation of the vacuum pump to discharge at least the liquid in the first pipeline and the second pipeline to reduce the amount of residual liquid in the pipeline system. When the exhaust valve is open, the liquid in the pipe between the connection point between the piping system and the outside atmosphere and the inlet and/or outlet end of the piping system can flow into the liquid storage tank under the action of air pressure and gravity; first When the pump body (for example, a vacuum pump) is running, it can use its self-priming function to suck the residual liquid in the pipeline between the piping system and the exhaust valve connection position to the first pump body inlet to the first pump body (for example, a vacuum pump) place, and discharge the sucked liquid out of the pipeline system through the outlet of the first pump body (for example, vacuum pump).

In some embodiments, taking the piping system 330 shown in Figure 3 as an example, when the first pump body and the second pump body are the same, both the first pump body and the second pump body can have both pumps. The vacuum pump 360 has both gas function and liquid pumping function. At this time, the exhaust valve may only include the first exhaust valve 381. Step 930 may include: controlling the operation of the vacuum pump 360 to at least discharge the liquid in the first pipeline 340 and the second pipeline 350 . The vacuum pump 360 is running. Since the first exhaust valve 381 is in an open state, the pipeline system 330 is connected to the outside atmosphere. The vacuum pump 360 can use the self-priming function to pump the air in the first pipeline 340 between point A and the inlet of the vacuum pump 360. The liquid is extracted and discharged from the pipeline system 330 after passing through the vacuum pump 360 and the second pipeline 350. The liquid in the second pipeline 350 will also be discharged into the liquid storage tank through the outlet end 351.

In some embodiments, step 1050 may also include: controlling the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline after a preset time of controlling the end of the operation of the second pump body. After the second pump body has finished running for a preset time, the first pump body starts to run, so that the liquid in the energy transfer tube can be transported to the liquid storage tank in time to avoid the liquid in the energy transfer tube from becoming larger due to being left for too long. temperature changes (warming or cooling).

FIG. 11 is a module schematic diagram of a control system 1100 of a pipeline system according to some embodiments of this specification. In some embodiments, the control system 1100 can be used to control the working status of components of the pipeline system (such as vacuum pumps, water pumps, energy transfer pipes, first exhaust valves, etc.). In some embodiments, the control system 1100 may be provided with the control component 110 .

In some embodiments, the control system 1100 may include a first pump control module 1110 and a second pump control module 1120 . Among them, the first pump body control module 1110 is used to control the operation of the first pump body, so that the liquid enters the second pump body or at least causes the liquid in the first pipeline and the second pipeline to be discharged; the second pump body control module 1120 uses To control the operation of the second pump body so that liquid enters the second pipeline from the first pipeline. In some embodiments, the first pump body may include a vacuum pump. For details about the first pump body and the second pump body, please refer to Figure 8 and its related description.

In some embodiments, when the first pump body and the second pump body are different, the second pump body may include a water pump and the first pump body may include a vacuum pump. The first pump body control module 1110 can be used to control the working status of the vacuum pump (such as opening and closing status, pump speed, etc.), and the second pump body control module 1120 can be used to control the working status of the water pump (such as opening and closing status, pump speed, etc.) ). The second pump control module 1120 can control the operation of the water pump to extract and pump liquid from the first pipeline to the second pipeline. The first pump control module 1110 can control the operation of the vacuum pump to suction and pump the liquid to the water pump, or at least discharge the liquid in the first pipeline and the second pipeline to reduce the amount of residual liquid in the pipeline system.

In some embodiments, when the first pump body and the second pump body are the same, that is, both the first pump body and the second pump body can be vacuum pumps with both air pumping and liquid pumping functions, the first pump body controls The module 1110 and the second pump body control module 1120 may be the same module and control the vacuum pump. The second pump control module 1120 controls the operation of the vacuum pump, and pumps the liquid from the first pipeline to the second pipeline; the first pump control module 1110 controls the operation of the vacuum pump, and pumps the liquid to the vacuum pump, or at least The liquid in the first pipeline and the second pipeline is drained to reduce the amount of residual liquid in the pipeline system.

Referring to FIG. 1 , in some embodiments, the control component 110 of the cooking device 100 includes at least one processor and at least one memory. At least one memory is used to store computer instructions. At least one processor is operable to perform at least a portion of the linear computer instructions to perform any of the operations described above.

In some embodiments, a processor may be a single server or a group of servers. Server groups can be centralized or distributed. In some embodiments, the processor may be a local component or a remote component relative to one or more other components of the cooking device 100 . For example, the processor may access information and/or data stored in the memory via a network (eg, cable network, Bluetooth network, Internet, etc.). As another example, a processor may be directly connected to memory to access stored information and/or data. In some embodiments, the processor may be implemented on a cloud platform. By way of example only, cloud platforms may include private clouds, public clouds, hybrid clouds, community clouds, distributed clouds, on-premise clouds, multi-tier clouds, etc., or any combination thereof. In some embodiments, a processor may include a central processing unit (CPU), an application specific integrated circuit (ASIC), an application specific instruction processor (ASIP), a graphics processing unit (GPU), a physical processor (PPU), a digital signal processor (DSP), field programmable gate array (FPGA), programmable logic circuit (PLD), controller, microcontroller unit, reduced instruction set computer (RISC), microprocessor, etc. or any combination of the above.

Memory may be used to store data and/or instructions. Memory may include one or more storage components, and each storage component may be an independent device or part of another device. In some embodiments, memory may include random access memory (RAM), read only memory (ROM), bulk memory, removable memory, volatile read-write memory, etc., or any combination thereof. By way of example, mass storage may include magnetic disks, optical disks, solid state disks, etc. In some embodiments, the storage may be implemented on a cloud platform. For example only, the cloud platform may include private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, internal cloud, multi-tier cloud, etc. or any combination thereof.

In some embodiments, the control component 110 of the cooking device 100 may also include a variety of computer-readable media, which may be any available media that can be accessed by the processor, including volatile and non-volatile media, removable media, and non-removable media. Memory may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 230 and/or cache memory. The control component 110 may further include other removable/non-removable, volatile/non-volatile computer system storage media. By way of example only, memory may be used to read and write to non-removable, non-volatile magnetic media (commonly referred to as "hard drives").

It should be noted that the above description of the control system 1100 and its modules is only for convenience of description and does not limit the present application to the scope of the embodiments. It can be understood that for those skilled in the art, after understanding the principle of the system, it is possible to arbitrarily combine various modules or form a subsystem to connect with other modules without departing from this principle. For example, in some embodiments, the first pump control module 1110 and the second pump control module 1120 can be different modules, or one module can implement the functions of two or more modules mentioned above. For another example, each module may have its own storage module. For another example, each module can share a storage module. Such deformations are within the protection scope of this application.

The basic concepts have been described above. It is obvious to those skilled in the art that the above detailed disclosure is only an example and does not constitute a limitation of this specification. Although not explicitly stated herein, various modifications, improvements, and corrections may be made to this specification by those skilled in the art. Such modifications, improvements, and corrections are suggested in this specification, and therefore such modifications, improvements, and corrections remain within the spirit and scope of the exemplary embodiments of this specification.

At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and/or "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that “one embodiment” or “an embodiment” or “an alternative embodiment” mentioned twice or more at different places in this specification does not necessarily refer to the same embodiment. . In addition, certain features, structures or characteristics in one or more embodiments of this specification may be appropriately combined.

In addition, unless explicitly stated in the claims, the order of the processing elements and sequences, the use of numbers and letters, or the use of other names in this specification are not intended to limit the order of the processes and methods in this specification. Although the foregoing disclosure discusses by various examples some embodiments of the invention that are presently considered useful, it is to be understood that such details are for purposes of illustration only and that the appended claims are not limited to the disclosed embodiments. To the contrary, rights The claims are intended to cover all modifications and equivalent combinations consistent with the spirit and scope of the embodiments of this specification. For example, although the system components described above can be implemented through hardware devices, they can also be implemented through software-only solutions, such as installing the described system on an existing server or mobile device.

Similarly, it should be noted that, in order to simplify the expression disclosed in this specification and thereby help understand one or more embodiments of the invention, in the previous description of the embodiments of this specification, multiple features are sometimes combined into one embodiment. accompanying drawings or descriptions thereof. However, this method of disclosure does not imply that the subject matter of the description requires more features than are mentioned in the claims. In fact, embodiments may have less than all features of a single disclosed embodiment.

In some embodiments, numbers are used to describe the quantities of components and properties. It should be understood that such numbers used to describe the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Grooming. Unless otherwise stated, "about," "approximately," or "substantially" means that the stated number is allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending on the desired features of the individual embodiment. In some embodiments, numerical parameters should account for the specified number of significant digits and use general digit preservation methods. Although the numerical ranges and parameters used to identify the breadth of ranges in some embodiments of this specification are approximations, in specific embodiments, such numerical values are set as accurately as is feasible.

Each patent, patent application, patent application publication and other material, such as articles, books, instructions, publications, documents, etc. cited in this specification is hereby incorporated by reference into this specification in its entirety. Application history documents that are inconsistent with or conflict with the content of this specification are excluded, as are documents (currently or later appended to this specification) that limit the broadest scope of the claims in this specification. It should be noted that if there is any inconsistency or conflict between the descriptions, definitions, and/or the use of terms in the accompanying materials of this manual and the content described in this manual, the descriptions, definitions, and/or the use of terms in this manual shall prevail. .

Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Accordingly, by way of example and not limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to those expressly introduced and described in this specification.

Claims

A cooking device, characterized in that the cooking device includes a liquid storage tank and a pipeline system connected to the liquid storage tank; the pipeline system includes:

first pipeline;

second pipeline;

A vacuum pump is provided between the first pipeline and the second pipeline; wherein the first pipeline is connected to the inlet of the vacuum pump, and the second pipeline is connected to the outlet of the vacuum pump; The inlet end of the first pipeline is connected to the outlet of the liquid storage tank, and the outlet end of the second pipeline is connected to the inlet of the liquid storage tank.
The cooking device of claim 1, wherein the vacuum pump includes a diaphragm pump.
The cooking device according to claim 1, wherein the pipeline system further includes a water pump, one end of the water pump is connected to the first pipeline, and the other end of the water pump is connected to the inlet of the vacuum pump. .
The cooking device according to claim 3, characterized in that the pipeline system further includes a first exhaust valve, the first exhaust valve is connected with the first pipeline and the second pipeline. At least one connection.
The cooking device according to any one of claims 1 to 4, wherein the pipeline system further includes a heating device and/or a refrigeration device for heating or cooling the liquid in the pipeline system. Refrigeration.
The cooking device according to claim 5, wherein the heating device and/or the refrigeration device includes an energy transfer tube and a heating element and/or a refrigeration element arranged outside the energy transfer tube; the energy One end of the transfer tube is connected to the first pipeline, and the other end of the energy transfer tube is connected to the second pipeline.
The cooking device according to claim 6, wherein when the pipeline system further includes a water pump, one end of the energy transfer tube is connected to the outlet of the water pump; the other end of the energy transfer tube is connected to the outlet of the water pump. The second pipeline connection.
The cooking device according to claim 1 or 3 or 6 or 7, characterized in that the pipeline system further includes a one-way valve, one end of the one-way valve is connected to the first pipeline, and the one-way valve The other end of the one-way valve is connected to the second pipeline; the direction of the one-way valve is from one end of the one-way valve to the other end of the one-way valve.
The cooking device according to claim 8, wherein the one-way valve is provided between the energy transfer tube and the second pipeline; the direction of the one-way valve is from the energy transfer tube to to the second pipeline.
The cooking device according to claim 8, wherein one end of the one-way valve is connected to the inlet of the vacuum pump, and the other end of the one-way valve is connected to the second pipeline.
The cooking device according to claim 8, wherein the pipeline system further includes a second exhaust valve, the second exhaust valve is disposed between the one-way valve and the energy transfer tube.
The cooking device according to claim 11, wherein the pipeline system further includes a second exhaust valve pipeline, one end of the second exhaust valve pipeline is connected to the second exhaust valve, so The other end of the second exhaust valve pipeline is connected to the pipeline between the one-way valve and the energy transfer tube.
The cooking device according to claim 1, wherein the pipeline system is provided on the side of the liquid storage tank.
The cooking device according to claim 1, wherein the outlet portion of the liquid storage tank and the inlet portion of the liquid storage tank are provided on a side wall of the liquid storage tank.
The cooking device according to claim 13 or 14, wherein the outlet portion of the liquid storage tank includes a lower outlet and an upper outlet connected to an outlet channel between the lower outlet and the upper outlet; The inlet portion of the liquid tank includes a lower inlet and an upper inlet, and an inlet passage connecting the lower inlet and the upper inlet.
The cooking device according to claim 4, characterized in that the connection position between the first exhaust valve and the first pipeline or the second pipeline is higher than that of the liquid storage tank and the pipeline system. the highest point of the liquid level.
The cooking device according to claim 1 or 4, wherein the pipeline system includes a one-way valve, a heat transfer pipe, and a second exhaust gas located between the one-way valve and the heat transfer pipe. valve, the communication position of the pipeline between the second exhaust valve, the one-way valve and the heat transfer tube is higher than the highest point of the liquid level in the liquid storage tank and the pipeline system.
The cooking device according to claim 1, wherein the liquid storage tank is detachably connected to the pipeline system.
The cooking device according to claim 18, wherein the first pipeline is detachably connected to the outlet of the liquid storage tank; and the second pipeline is detachably connected to the inlet of the liquid storage tank. connect.
The cooking device according to claim 1, wherein the first pipeline is sealingly connected to the outlet of the liquid storage tank; and the second pipeline is sealingly connected to the inlet of the liquid storage tank.
The cooking device according to claim 1, wherein at least part of the pipeline system is provided on a side of the liquid storage tank.
A pipeline system, characterized in that the pipeline system includes:

first pipeline;

second pipeline;

A vacuum pump is provided between the first pipeline and the second pipeline; wherein the first pipeline is connected to the inlet of the vacuum pump, and the second pipeline is connected to the outlet of the vacuum pump; The inlet end of the first pipeline is connected to the outlet of the liquid storage tank, and the outlet end of the second pipeline is connected to the inlet of the liquid storage tank.
The pipeline system according to claim 22, characterized in that the pipeline system further includes a water pump, and the water pump is connected in series with the vacuum pump.
The pipeline system according to claim 22 or 23, characterized in that the pipeline system further includes a first exhaust valve, the first exhaust valve is connected with the first pipeline and the second pipeline. At least one connection in the road.
The piping system according to any one of claims 22 to 24, characterized in that the piping system further includes a heating device and/or a refrigeration device for heating the liquid in the piping system. or refrigeration; the heating device and/or the refrigeration device includes an energy transfer tube and a heating element and/or a refrigeration element arranged outside the energy transfer tube; the energy transfer tube is connected in parallel with the vacuum pump.
The pipeline system according to claim 25, characterized in that when the pipeline system further includes a water pump, the energy transfer tube is connected in series with the water pump.
The pipeline system according to claim 22, 23 or 26, characterized in that the pipeline system further includes a one-way valve, one end of the one-way valve is connected to the first pipeline, and the one-way valve The other end of the valve is connected to the second pipeline; the direction of the one-way valve is from one end of the one-way valve to the other end of the one-way valve.
The pipeline system according to claim 27, characterized in that the one-way valve is provided between the energy transfer pipe and the second pipeline; the direction of the one-way valve is from the energy transfer pipe. pipe to the second pipe.
The pipeline system according to claim 27, wherein one end of the one-way valve is connected to the inlet of the vacuum pump, and the other end of the one-way valve is connected to the second pipeline.
The pipeline system according to claim 27, characterized in that the pipeline system further includes a second exhaust valve, the second exhaust valve is disposed between the one-way valve and the energy transfer tube. .
The pipeline system according to claim 22, characterized in that the pipeline system is arranged on the side of the liquid storage tank.
The pipeline system according to claim 22, characterized in that the ratio range between the water circulation flow rate in the pipeline system and the volume of the liquid storage tank is 1:6-1:1.
The pipeline system according to claim 23, characterized in that the ratio range between the flow rate of the water pump and the volume of the liquid storage tank is 1:6-1:1.
A control method for a pipeline system, the method is executed by at least one processor, characterized in that the method includes:

Control the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline;

Control the operation of the first pump body to allow liquid to enter the second pump body or at least discharge the liquid in the first pipeline and the second pipeline; the first pump body includes a vacuum pump.
The method according to claim 34, characterized in that the second pump body is controlled to operate so that liquid enters the first pump body or at least the liquid in the first pipeline and the second pipeline Discharge, including:

Before controlling the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline, control the operation of the first pump body to allow liquid to enter the second pump body.
The method of claim 34, wherein the control of the first pump body causes liquid to enter the second pump body or at least the liquid in the first pipeline and the second pipeline. Discharge, including:

After controlling the operation of the second pump body, control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline.
The method of claim 34, wherein the control of the first pump body causes liquid to enter the second pump body or at least the liquid in the first pipeline and the second pipeline. Discharge, including:

Before controlling the operation of the second pump body to allow liquid to enter the second pipeline from the first pipeline, control the operation of the first pump body to allow liquid to enter the second pump body;

After controlling the operation of the second pump body, control the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline.
The method according to claim 35 or 37, characterized in that the pipeline system includes an exhaust valve connected to at least one of the first pipeline and the second pipeline, The method also includes:

Before controlling the operation of the first pump body and allowing liquid to enter the second pump body, the exhaust valve is controlled to be in a closed state.
The method according to claim 35 or 37, characterized in that, during the process of controlling the operation of the first pump body to allow liquid to enter the second pump body, the operation time of the first pump body includes 3 seconds. ~15 seconds.
The method according to claim 36 or 37, characterized in that the pipeline system includes an exhaust valve; the method further includes:

Before controlling the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline, the exhaust valve is controlled to be in an open state.
The method according to claim 36 or 37, characterized in that controlling the operation of the first pump body to at least discharge the liquid in the first pipeline and the second pipeline further includes:

After controlling the preset time for the end of the operation of the second pump body, the operation of the first pump body is controlled to at least discharge the liquid in the first pipeline and the second pipeline.
A control system for a pipeline system, characterized in that the system includes:

The second pump body control module is used to control the operation of the second pump body so that liquid enters the second pipeline from the first pipeline;

The first pump body control module is used to control the operation of the first pump body to allow liquid to enter the second pump body or at least to discharge the liquid in the first pipeline and the second pipeline; the first The pump body includes a vacuum pump.
A control system for a pipeline system, characterized in that the device includes at least one processor and at least one memory;

The at least one memory is used to store computer instructions;

The at least one processor is configured to execute at least part of the computer instructions to implement the operations described in any one of claims 33 to 41.
A computer-storable medium, characterized in that the storage medium stores computer instructions. When at least part of the computer instructions are executed by a processor, the method described in any one of claims 33 to 41 is implemented. operate.
A cooking device, characterized in that the cooking device includes: the cooking device includes a liquid storage tank and a pipeline system connected with the liquid storage tank;

The piping system includes:

first pipeline;

second pipeline;

A first pump body is provided between the first pipeline and the second pipeline; wherein the first pipeline is connected to the inlet of the first pump body, and the second pipeline is connected to the inlet of the first pump body. The outlet of the first pump body is connected;

The cooking device has a first working mode and a second working mode;

When the cooking device operates in the first working mode, the first pump body operates to introduce water in the liquid storage tank into the pipeline system for circulation;

When the cooking device operates in the second working mode, at least one of the first pipeline or the second pipeline is connected to atmospheric pressure and the first pump body is operated to move the gas in the pipeline. The water in the pipeline system is discharged into the liquid storage tank;

When the cooking device is in a cooking state, the cooking device operates in the first working mode; when a preset instruction is detected, the first working mode switches to the second working mode.
The cooking device according to claim 45, wherein the preset instruction includes a cooking end instruction or a start instruction of the second working mode.
The cooking device according to claim 45, characterized in that, the cooking device further includes an energy transfer pipe and a second exhaust valve; the energy transfer pipe is connected in series with the first pump body; the second exhaust valve A valve is provided between the energy transfer tube and the second pipeline.
The cooking device according to claim 45, characterized in that the cooking device further includes a second pump body, the second pump body is connected in series with the first pump body and is used to operate in the first working mode. Down.
The cooking device according to claim 48, wherein the flow rate of the second pump body is greater than that of the first pump body.
The cooking device according to claim 48, wherein in the first working mode, the first pump body is started before the second pump body.
The cooking device according to claim 48, wherein in the second working mode, the first pump body is closed later than the second pump body.
The cooking device according to claim 45, wherein the cooking device further includes a first exhaust valve, and the first exhaust valve is connected to the first pipeline.
The cooking device according to claim 45, wherein the ratio between the total pipeline flow in the pipeline system and the volume of the liquid storage tank ranges from 1:6 to 1:1.
The cooking device according to claim 48, wherein the ratio between the flow rate of the second pump body and the volume of the liquid storage tank ranges from 1:6 to 1:1.