CN218738854U - Heat pump type dish washing machine - Google Patents

Abstract

The application discloses heat pump dish washer, heat pump dish washer includes the heat pump, cold-storage medium container, first admission pipeline, drainage pipe way and controlling means, the heat pump can hold the refrigerant, cold-storage medium container can hold the cold-storage medium that carries out the heat exchange with the refrigerant, cold-storage medium container is connected with the heat pump, cold-storage medium container has inlet and liquid outlet, first admission pipeline is connected with the inlet, the fluid-discharge line is connected with the liquid outlet and can be with the cold-storage medium discharge to heat pump dish washer's casing outside, controlling means can control the break-make of drainage pipeline. The design can effectively collect the cold energy discharged after the cold accumulation medium exchanges heat with the refrigerant in the heat pump, and can effectively control the discharge of the cold accumulation medium.

Description

Heat pump type dish washing machine

Technical Field

The application relates to the technical field of dish washing machines, in particular to a heat pump type dish washing machine.

Background

A heat pump dishwasher is a dish washing apparatus that heats washing water using a heat pump system.

In the heat pump heating technology on the market at present, a condenser of a heat pump system is generally directly connected to a washing device of a dish washing machine, and in the process of washing tableware by the dish washing machine, washing water directly passes through the condenser and then is circularly heated to a specified temperature so as to realize high-temperature washing of the tableware.

However, in the whole heat pump system, in the process of heating the washing water by the heat generated by the condenser, the cold energy is discharged along with the heat exchange between the cold storage medium and the refrigerant in the evaporator, and the indoor temperature is reduced. Therefore, there is a need for a new heat pump dishwasher.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a heat pump type dish washing machine, which can effectively collect the cold energy discharged after the cold accumulation medium and the refrigerant in the heat pump are subjected to heat exchange, and can effectively control the discharge of the cold accumulation medium.

In a first aspect, embodiments of the present application provide a heat pump dishwasher; this heat pump dish washer includes the heat pump, the cold-storage medium container, first admission pipeline, drainage pipeline and controlling means, the heat pump can hold the refrigerant, the cold-storage medium container can hold the cold-storage medium that carries out the heat exchange with the refrigerant, the cold-storage medium container is connected with the heat pump, the cold-storage medium container has inlet and liquid outlet, first admission pipeline is connected with the inlet, the fluid-discharge line is connected with the liquid outlet, and the fluid-discharge line can be outside the casing of heat pump dish washer with cold-storage medium discharge, controlling means can control the break-make of drainage pipeline.

According to the heat pump type dish washing machine, the cold accumulation medium is stored in the cold accumulation medium container, and the cold energy discharged after the cold accumulation medium and a refrigerant in the heat pump are subjected to heat exchange is collected in the cold accumulation medium container; switch on through controlling means control drainage pipeline to outside making old cold-storage medium flow out the cold-storage medium container from the leakage fluid dram via the fluid discharge pipeline, and then arrange the casing outside to heat pump type dish washer through this fluid discharge pipeline, and turn off through controlling means control drainage pipeline, outside in order to block that the cold-storage medium flows out the cold-storage medium container from the leakage fluid dram via the fluid discharge pipeline, with the emission of effective control cold-storage medium.

In some embodiments, the control device includes a controller configured to turn on the drain line when the heat pump is operating to a preset number of times.

Based on the embodiment, after the heat pump is designed to run for the preset times, the controller controls the liquid discharge pipeline to be conducted, so that the cold accumulation medium in the cold accumulation medium container flows out of the cold accumulation medium container from the liquid outlet through the liquid discharge pipeline, on one hand, the utilization rate of the cold accumulation medium can be effectively improved, and on the other hand, the energy consumption of the heat pump type dish washing machine can be effectively reduced.

In some embodiments, the heat pump dishwasher further comprises a first drain pump, the first drain pump is disposed in the drain line, and the controller turns on the first drain pump when the heat pump operates for a preset number of times.

Based on above-mentioned embodiment, on the one hand first drainage pump can play the effect of drain valve, and the switching through controller control first drainage pump controls the break-make of drainage pipe way, and on the other hand first drainage pump can play the effect of suction machine, opens in order to promote old cold-storage medium from the leakage fluid dram through the outer speed of flowing out cold-storage medium container of fluid-discharge line through controller control first drainage pump.

In some embodiments, the heat pump dishwasher further comprises a first water inlet valve, the control device further comprises a liquid level sensor, the first water inlet valve is arranged on the first liquid inlet pipeline, the liquid level sensor collects the liquid level of the cold accumulation medium in the cold accumulation medium container, and the controller opens the first water inlet valve when the liquid level reaches a preset range.

Based on the above embodiment, by designing the liquid level sensor, the liquid level sensor is used for detecting the liquid level of the cold accumulation medium in the cold accumulation medium container, so that when the liquid level of the cold accumulation medium is within the preset range, the controller can open the first water inlet valve in time, and a new cold accumulation medium flows into the cold accumulation medium container from the liquid inlet through the first liquid inlet pipeline, thereby ensuring that the heat exchange between the cold accumulation medium and a refrigerant can be realized when the heat pump type dish washing machine works normally next time.

In some of these embodiments, the controller is configured to open the first water inlet valve when a liquid level of the cold storage medium within the cold storage medium container is below a preset liquid level, wherein the preset liquid level is a lower limit of the preset range.

Based on the embodiment, the preset liquid level is designed to be the lower limit value of the preset range, so that the controller can accurately control the liquid level sensor, and the intelligence of the heat pump type dishwasher is improved.

In some of these embodiments, the heat pump dishwasher further comprises a washing device comprising a washing chamber and a washing pump, the washing chamber being in communication with the washing pump to form a water supply circuit for circulating water for washing the dishes.

Based on the above embodiment, by designing the washing pump and the washing chamber, the water for washing the dishes is pumped out of the washing chamber by the washing pump and pumped back into the washing chamber by the washing pump, so that the water for washing the dishes can circulate in the water supply loop formed by the washing chamber and the washing pump.

In some embodiments, the heat pump includes a first heat exchange device, a compressor, a second heat exchange device, and a throttling device, the first heat exchange device, the compressor, the second heat exchange device, and the throttling device are sequentially communicated to form a circulation loop for the refrigerant to circulate, and the second heat exchange device is serially communicated between the washing cavity and the washing pump to form a part of the water supply loop.

Based on the embodiment, the cold storage medium in the cold storage medium container exchanges heat with the refrigerant in the first heat exchange device, the refrigerant after heat exchange passes through the compressor and flows into the second heat exchange device, and exchanges heat with the water for washing the tableware in the water supply loop, so that the water for washing the tableware in the water supply loop is heated and is circularly pumped out of the washing cavity and pumped into the washing cavity again under the action of the washing pump, and the tableware in the washing cavity is effectively washed.

In some embodiments, the heat pump dishwasher further comprises a second liquid inlet pipeline communicated with the washing cavity, and the second liquid inlet pipeline is communicated with the first liquid inlet pipeline in parallel.

Based on the above embodiment, through the second liquid inlet pipeline that designs and washing cavity intercommunication, be convenient for inject the washing cavity with new water that is used for washing the tableware in to guarantee this heat pump dishwasher is to the effective washing of tableware, parallelly connected with first liquid inlet pipeline through designing second liquid inlet pipeline for second liquid inlet pipeline can share a water source with first liquid inlet pipeline, has simplified this heat pump dishwasher's water route structure.

In some embodiments, the heat pump dishwasher further comprises a water softener disposed between the second inlet valve and the washing chamber, and a second inlet valve disposed in the second inlet line.

Based on the above embodiment, the on-off of the second liquid inlet pipeline is controlled by designing the second water inlet valve, so that the flow diversion control of the water flow of the second liquid inlet pipeline and the first liquid inlet pipeline can be conveniently realized, and by designing the water softener, the water softener can soften the water flowing into the washing cavity from the second water inlet valve through the second liquid inlet pipeline, so as to optimize the quality of the water for washing the tableware.

In some embodiments, the washing device further comprises a shunt valve and a plurality of spray arms located in the washing cavity, one end of the shunt valve is communicated with the washing pump, and the other end of the shunt valve is communicated with the plurality of spray arms.

Based on the above embodiment, by designing the water diversion valve and the plurality of spray arms, after the water for washing the dishes is pumped out of the washing cavity under the action of the washing pump, the water is dispersed to form a plurality of water paths through the water diversion valve, and under the action of the washing pump, the plurality of water paths are pumped into the corresponding spray arms and are sprayed out from the spray holes of the spray arms to return to the washing cavity again, so that the cleaning effect of the heat pump type dishwasher on the dishes is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a heat pump dishwasher according to an embodiment of the present application.

Reference numerals are as follows: 1. a heat pump dishwasher; 10. a heat pump; 11. a first heat exchange device; 12. a compressor; 13. a second heat exchange device; 14. a throttling device; 20. a cold storage medium container; 21. a liquid inlet; 22. a liquid outlet; 31. a first liquid inlet pipeline; 32. a first water inlet valve; 41. a liquid discharge pipeline; 42. a first drainage pump; 51. a liquid level sensor; 60. a washing device; 61. washing the cavity; 62. a washing pump; 63. a shunt valve; 64. a spray arm; 65. a water supply circuit; 71. a second liquid inlet pipeline; 72. a second inlet valve; 80. a water softener; 90. a second drain pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

A heat pump dishwasher is a dish washing apparatus that heats washing water using a heat pump system.

In the heat pump heating technology on the market at present, a condenser of a heat pump system is generally directly connected to a washing device of a dish washing machine, and in the process of washing tableware by the dish washing machine, washing water directly passes through the condenser and then is circularly heated to a specified temperature so as to realize high-temperature washing of the tableware.

However, in the whole heat pump system, in the process of heating the washing water by the heat generated by the condenser, the cold energy is discharged along with the heat exchange between the cold storage medium and the refrigerant in the evaporator.

For example, in a related art, a heat pump dishwasher includes a fan for sucking indoor air, the indoor air is delivered to an evaporator of the heat pump system as a cold storage medium by the fan to exchange heat with a refrigerant flowing in the evaporator, and the indoor air heat exchanged with the refrigerant in the evaporator is converted into cold air (i.e., cold energy) having a lower temperature by heat release and is directly discharged to the air. Because heat pump dishwasher generally installs in the kitchen, cold volume on the one hand can be great to the indoor temperature in kitchen in directly being discharged to the air, and on the other hand can produce great noise and can produce the influence to user's normal life in the fan working process.

Therefore, based on, but not limited to, the application scenario of the above-mentioned heat pump dishwasher, it is necessary to provide a new heat pump dishwasher.

In order to solve the above technical problem, referring to fig. 1, a first aspect of the present application provides a heat pump dishwasher 1 capable of effectively collecting cold energy discharged after a cold storage medium exchanges heat with a refrigerant in a heat pump 10, and effectively controlling discharge of the cold storage medium.

The heat pump type dish washing machine 1 comprises a heat pump 10, a cold accumulation medium container 20, a first liquid inlet pipeline 31, a liquid discharge pipeline 41 and a control device, wherein the heat pump 10 can contain a refrigerant, the cold accumulation medium container 20 can contain a cold accumulation medium which exchanges heat with the refrigerant, the cold accumulation medium container 20 is connected with the heat pump 10, the cold accumulation medium container 20 is provided with a liquid inlet 21 and a liquid outlet 22, the first liquid inlet pipeline 31 is connected with the liquid inlet 21, the liquid discharge pipeline 41 is connected with the liquid outlet 22, the liquid discharge pipeline 41 can discharge the cold accumulation medium to the outside of a shell of the heat pump type dish washing machine 1, and the control device can control the on-off of the liquid discharge pipeline 41.

The following description will be made with reference to fig. 1 for describing a specific structure of the heat pump dishwasher 1, and the heat pump dishwasher 1 includes a heat pump 10, a cold storage medium container 20, a first liquid inlet pipeline 31, a liquid outlet pipeline 41, and a control device (not shown).

The heat pump 10 can achieve heat exchange, and the specific structure of the heat pump 10 and the principle of heat exchange achieved by the heat pump 10 will be described below.

The heat pump 10 can accommodate a refrigerant, that is, the refrigerant is stored in the heat pump 10, wherein the "refrigerant" should be understood as a medium that absorbs heat and is easily converted into gas, and releases heat and is easily converted into liquid, for example, the refrigerant may be a refrigerant such as freon.

The cold storage medium container 20 can be used for storing other media (such as a refrigerant described below), the specific shape and material of the cold storage medium container 20 are not limited herein, and a designer can reasonably design and select the shape and material of the cold storage medium container 20 according to different models of heat pump dishwashers 1, and for different models of heat pump dishwashers 1, the shape and material of the cold storage medium container 20 may be the same or different.

The cold storage medium container 20 can accommodate a cold storage medium that exchanges heat with a refrigerant. Among them, the "heat exchange" is a process of heat transfer between two objects or between parts of the same object due to a temperature difference, and heat is directly or indirectly transferred from a hot fluid (an object having a higher temperature) to a cold fluid (an object having a lower temperature). By "cold storage medium" is understood a medium which releases latent heat of phase change and stores cold by a change of state (for example from a liquid to a solid state), for example the cold storage medium may be water.

The cold storage medium and the refrigerant belong to two different media, in the process of heat exchange between the cold storage medium and the refrigerant, the cold storage medium releases phase change latent heat and stores cold, and the refrigerant absorbs the phase change latent heat released by the cold storage medium, namely the phase change latent heat released by the cold storage medium is transferred from the cold storage medium with higher temperature to the refrigerant with lower temperature. For example, when the cold storage medium is water, the water releases latent heat of phase change and stores cold to convert into ice, and the refrigerant absorbs the latent heat of phase change released by the water to convert into a refrigerant with a higher temperature.

The cold storage medium container 20 has a liquid inlet 21 and a liquid outlet 22, wherein the "liquid inlet 21" is an opening through which the cold storage medium flows into the cold storage medium container 20, and the "liquid outlet 22" is an opening through which the cold storage medium flows out of the cold storage medium container 20. The specific shapes and sizes of the liquid inlet 21 and the liquid outlet 22 and the relative positions of the liquid inlet 21 and the liquid outlet 22 on the cold storage medium container 20 are not limited, and a designer can reasonably design the cold storage medium container according to actual needs.

The cold storage medium container 20 is connected to the heat pump 10 so that the cold storage medium stored in the cold storage medium container 20 can exchange heat with the refrigerant stored in the heat pump 10. For example, the cold storage medium container 20 and the heat pump 10 may be directly connected or indirectly connected, when the cold storage medium container 20 and the heat pump 10 are directly connected, the first heat exchanging device 11 (described below, such as an evaporator) of the heat pump 10 may be directly located inside the cold storage medium container 20, when the cold storage medium container 20 and the heat pump 10 are indirectly connected, the first heat exchanging device 11 of the heat pump 10 is located outside the cold storage medium container 20, and the heat pump dishwasher 1 further includes a guide tube, via which the cold storage medium container 20 is connected with the first heat exchanging device 11 of the heat pump 10. The specific connection between the cold storage medium container 20 and the heat pump 10 will be described below.

The first liquid inlet pipeline 31 is used for circulating the new cold accumulation medium injected into the cold accumulation medium container 20, and the first liquid inlet pipeline 31 is communicated with the liquid inlet 21 of the cold accumulation medium container 20, that is, the new cold accumulation medium can flow into the cold accumulation medium container 20 from the liquid inlet 21 through the first liquid inlet pipeline 31. The specific shape and material of the first liquid inlet pipeline 31 are not limited, and a designer can reasonably design on the basis of improving the space utilization rate and saving the cost.

The liquid discharge pipe 41 is used for circulating and discharging the old cold storage medium outside the cold storage medium container 20, the liquid discharge pipe 41 is connected with the liquid outlet 22 of the cold storage medium container 20, and the liquid discharge pipe 41 can discharge the cold storage medium to the outside of the housing of the heat pump dishwasher 1. The casing of the heat pump dishwasher 1 is the whole casing, and the other end of the liquid discharge pipeline 41 extends out of the casing and can be directly or indirectly pulled to a sewer pipeline. For example, one end of the liquid discharge pipe 41 is connected to the liquid outlet 22 of the cold storage medium container 20, and the other end of the liquid discharge pipe 41 can directly extend out of the housing of the heat pump dishwasher 1 and be drawn to the sewer pipe to discharge the cold storage medium; alternatively, the other end of the liquid discharge pipe 41 may be disposed adjacent to the corresponding housing opening, and the other end of the liquid discharge pipe 41 is indirectly pulled to the sewer line by a separately disposed pipe abutting against the opening, so as to discharge the cold storage medium. The other end of the liquid drainage pipe 41 extends out of the housing of the heat pump dishwasher 1, so that the old cold storage medium can flow out of the cold storage medium container 20 from the liquid outlet 22 via the liquid drainage pipe 41, and then be drained out of the housing of the heat pump dishwasher 1 via the liquid drainage pipe 41. Here, the specific shape and material of the drain pipe 41 are not limited, and a designer can reasonably design the drain pipe on the basis of improving the space utilization rate and saving the cost.

The control device is used for controlling the on-off of the liquid drainage pipeline 41, that is, the control device can control the liquid drainage pipeline 41 to be conducted so as to make the old cold storage medium flow out of the cold storage medium container 20 from the liquid drainage port via the liquid drainage pipeline 41, and of course, the control device can also control the liquid drainage pipeline 41 to be switched off so as to block the cold storage medium from flowing out of the cold storage medium container 20 from the liquid drainage port via the liquid drainage pipeline 41. The specific structure of the control device and the specific manner of controlling the liquid discharge pipeline 41 to be on or off by the control device will be described later.

According to the heat pump type dishwasher 1 in the embodiment of the present application, by storing the cold storage medium in the cold storage medium container 20, the cold energy discharged after the cold storage medium exchanges heat with the refrigerant in the heat pump 10 is collected in the cold storage medium container 20; the control device controls the liquid discharge pipeline 41 to be conducted so as to enable old cold accumulation media to flow out of the cold accumulation media container 20 from the liquid discharge port through the liquid discharge pipeline 41 and then to be discharged out of the shell of the heat pump type dish washing machine 1 through the liquid discharge pipeline 41, and controls the liquid discharge pipeline 41 to be disconnected so as to block the cold accumulation media from flowing out of the cold accumulation media container 20 from the liquid discharge port through the liquid discharge pipeline 41 and effectively control the discharge of the cold accumulation media.

Considering that the cold storage medium in the cold storage medium container 20 needs to exchange heat with the refrigerant in the heat pump 10 every time the tableware is washed, as shown in fig. 1, in order to reduce the energy consumption of the heat pump dishwasher 1 while increasing the utilization rate of the cold storage medium, in one embodiment, the control device includes a controller configured to turn on the drain line 41 when the heat pump 10 is operated to a preset number of times. That is, the heat pump 10 is operated up to a preset number of times, the controller controls the liquid discharge pipe 41 to be conducted, and the old cold storage medium flows out of the cold storage medium container 20 from the liquid discharge port via the liquid discharge pipe 41. The "preset number" may be understood as the number of times the heat pump 10 needs to operate before discharging the old cold storage medium in the cold storage medium container 20, and the specific number of the preset number is not limited, and a designer may reasonably design the preset number of times after repeated experiments under the condition that the optimal effect of dish washing is achieved. In this design, after the heat pump 10 is designed to operate for a preset number of times, the controller controls the liquid discharge pipeline 41 to be conducted, so that the cold storage medium in the cold storage medium container 20 flows out of the cold storage medium container 20 from the liquid outlet 22 through the liquid discharge pipeline 41. The preset times can be one or more times, and compared with the mode that the controller controls the liquid discharge pipeline 41 to be conducted and sequentially discharges the liquid once when the heat pump 10 operates, the mode that the liquid is discharged again after the liquid is operated for multiple times is adopted, on one hand, the utilization rate of the cold storage medium can be effectively improved, and on the other hand, the energy consumption of the heat pump type dish washing machine 1 can be effectively reduced.

As shown in fig. 1, in consideration of the fact that the old cold storage medium in the cold storage medium container 20 can flow out of the cold storage medium container 20 from the liquid discharge port via the liquid discharge line 41 under the action of gravity after the liquid discharge line 41 is conducted, a drain valve may be designed on the liquid discharge line 41, and the controller controls the drain valve to be opened to conduct the liquid discharge line 41. In order to increase the speed of the old cold storage medium flowing out of the cold storage medium container 20 from the liquid outlet through the liquid discharge pipeline 41, the heat pump dishwasher 1 further includes a first water discharge pump 42 in one embodiment, the first water discharge pump 42 is disposed on the liquid discharge pipeline 41, and when the heat pump 10 is operated to a preset number of times, the controller turns on the first water discharge pump 42. In this design, on the one hand, the first water discharge pump 42 can function as a water discharge valve, and the controller controls the on-off of the first water discharge pump 42 to control the on-off of the liquid discharge pipeline 41, and on the other hand, the first water discharge pump 42 can function as a suction machine, and the controller controls the first water discharge pump 42 to be opened to increase the speed of the old cold storage medium flowing out of the cold storage medium container 20 from the liquid discharge port through the liquid discharge pipeline 41.

As shown in fig. 1, in consideration of the heat pump dishwasher 1 can realize heat exchange between the cold storage medium and the refrigerant when the heat pump dishwasher 1 is working normally next time after the old cold storage medium flows out of the cold storage medium container 20 from the liquid outlet 22 through the liquid discharge pipeline 41, in an embodiment, the heat pump dishwasher 1 further includes a first water inlet valve 32, the control device further includes a liquid level sensor 51, the first water inlet valve 32 is disposed in the first liquid inlet pipeline 31, the liquid level sensor 51 collects the liquid level of the cold storage medium in the cold storage medium container 20, and the controller opens the first water inlet valve 32 when the liquid level reaches a preset range. In this design, through designing liquid level sensor 51, liquid level sensor 51 is used for detecting the liquid level of the cold-storage medium in cold-storage medium container 20 to when the liquid level of cold-storage medium is in the preset range, the controller can open first water inlet valve 32 in time, make new cold-storage medium flow into cold-storage medium container 20 from inlet 21 via first liquid inlet pipeline 31 in, thereby guarantee that this heat pump dish washer 1 can realize the heat exchange of cold-storage medium and refrigerant when normally working next time.

Specifically, the liquid level sensor 51 may be used to monitor the liquid level of the cold storage medium in the cold storage medium container 20 in real time, and the specific model of the liquid level sensor 51 is not limited herein, and a designer may select a suitable model according to the design and manufacturing requirements.

The liquid level sensor 51 may be disposed on the outer surface of the cold storage medium container 20 and partially inserted into the cold storage medium, and the liquid level sensor 51 may also be disposed on the inner surface of the cold storage medium container 20 and at least partially inserted into the cold storage medium.

The "preset range" should be understood as a liquid level interval when the first water inlet valve 32 is in the open state, which is controlled by the cold storage medium controller according to the liquid level of the cold storage medium detected by the liquid level sensor 51, in other words, the "preset range" may include a lower limit liquid level value and an upper limit liquid level value, and when the liquid level of the cold storage medium is between the lower limit liquid level value and the upper limit liquid level value, the first water inlet valve 32 is controlled by the controller to be in the open state.

The liquid level sensor 51 is connected to the controller to transmit an electrical signal corresponding to the liquid level of the cold storage medium monitored in real time to the controller, and the controller controls the opening and closing of the first water inlet valve 32 according to different electrical signals after receiving the corresponding electrical signal. For example, when the liquid level sensor 51 detects that the liquid level of the cold storage medium is out of the preset range, the liquid level sensor 51 transmits a first electrical signal (for example, signal "1") to the controller, and the controller receives the first electrical signal and then controls the first water inlet valve 32 to close according to the first electrical signal, and similarly, when the liquid level sensor 51 detects that the liquid level of the cold storage medium is within the preset range, the liquid level sensor 51 transmits a second electrical signal (for example, signal "0") to the controller, and after receiving the second electrical signal, the controller controls the first water inlet valve 32 to open according to the second electrical signal.

As shown in fig. 1, in order to make the old cold storage medium flow out of the cold storage medium container 20 from the liquid discharge port via the liquid discharge pipeline 41 as much as possible, so as to reduce the possibility that the old cold storage medium remains in the cold storage medium container 20 and bacteria grow, it is further designed that in one embodiment, the controller is configured to open the first water inlet valve 32 when the liquid level of the cold storage medium in the cold storage medium container 20 is at a preset liquid level, which is the lower limit value of the preset range. In this design, the preset liquid level is designed to be the lower limit value of the preset range, so that the controller can accurately control the liquid level sensor 51, and the intelligence of the heat pump dishwasher 1 can be improved.

For example, the plane of the bottom surface of the cold storage medium container 20 may be used as the preset liquid level, at this time, the old cold storage medium in the cold storage medium container 20 is almost completely discharged out of the cold storage medium container 20 in the last operation of the heat pump dishwasher 1, the controller opens the first water inlet valve 32, and the new cold storage medium flows into the cold storage medium container 20 from the liquid inlet 21 via the first liquid inlet pipeline 31, so that the cold storage medium container 20 is almost filled with the new cold storage medium for heat exchange in the next operation of the heat pump dishwasher 1.

As shown in fig. 1, of course, the dishwasher further includes a washing device 60, the washing device 60 includes a washing chamber 61 and a washing pump 62, the washing chamber 61 is communicated with the washing pump 62 to form a water supply circuit 65, and the water supply circuit 65 is used for circulating water for washing dishes.

Wherein, the washing chamber 61 can be understood as a container for containing the water for washing the dishes and the dishes, the specific shape and material of the washing chamber 61 are not limited, the designer can reasonably design the shape of the washing chamber 61 according to different models of heat pump type dish washers 1, and the designer can reasonably select the material of the washing chamber 61 according to the design and manufacturing requirements.

The washing pump 62 is used for pumping out the water for washing the dishes from the washing chamber 61 and pumping the water back into the washing chamber 61, so as to circularly clean the dishes in the washing chamber 61. The specific type of the washing pump 62 is not limited, and a designer may select an appropriate washing pump 62 while ensuring that water used to wash dishes can be pumped into the washing chamber 61 properly.

The washing chamber 61 communicates with the washing pump 62 to form a water supply circuit 65, for example, the washing pump 62 may communicate with the bottom wall of the washing chamber 61, and the washing pump 62 may also communicate with the side wall of the washing chamber 61 near the bottom wall. The water for washing the dishes is pumped out of the washing chamber 61 by the washing pump 62 and re-pumped into the washing chamber 61 by the washing pump 62, so that the water for washing the dishes can circulate in the water supply circuit 65 formed by the washing chamber 61 and the washing pump 62.

As shown in fig. 1, considering that the heat pump 10 is used for heat exchange between a refrigerant and a cold storage medium, the heat pump 10 includes a first heat exchange device 11, a compressor 12, a second heat exchange device 13, and a throttling device 14, the first heat exchange device 11, the compressor 12, the second heat exchange device 13, and the throttling device 14 are sequentially communicated to form a circulation loop for the refrigerant to flow through, and the second heat exchange device 13 is serially communicated between the washing cavity 61 and the washing pump 62 to form a part of a water supply loop 65. In the design, the cold storage medium in the cold storage medium container 20 exchanges heat with the refrigerant in the first heat exchange device 11, the refrigerant after heat exchange passes through the compressor 12 and flows into the second heat exchange device 13, and exchanges heat with the water for washing dishes in the water supply loop 65, so that the water for washing dishes in the water supply loop 65 is heated and is circularly pumped out of the washing cavity 61 and pumped into the washing cavity 61 again under the action of the washing pump 62, and thus the dishes in the washing cavity 61 are effectively cleaned.

The first heat exchange device 11 is configured to exchange heat between the refrigerant and the cold storage medium stored in the cold storage medium container 20, before the heat exchange, the refrigerant is a low-temperature and low-pressure liquid refrigerant, the cold storage medium is a liquid cold storage medium, after the heat exchange, the liquid cold storage medium releases phase change latent heat and stores cold to be converted into a solid cold storage medium, and the low-temperature and low-pressure liquid refrigerant absorbs the phase change latent heat released by the liquid cold storage medium to be converted into a high-temperature and low-pressure gaseous refrigerant. It should be noted that the reconversion of the solid cold storage medium into the liquid cold storage medium may be natural melting at normal temperature, and certainly, in order to accelerate the reconversion of the solid cold storage medium into the liquid cold storage medium, a heating structure may also be additionally provided, where a specific expression form of the heating structure is not limited, and a designer may select an existing heating structure according to design and manufacturing requirements.

The first heat exchange device 11 may be an evaporator, and the evaporator may be a fin-tube evaporator or a microchannel evaporator.

The compressor 12 is configured to pressurize the high-temperature low-pressure gaseous refrigerant, which has undergone heat exchange with the first heat exchanging device 11, so that the high-temperature low-pressure gaseous refrigerant is converted into a high-temperature high-pressure gaseous refrigerant by the compressor 12. The compressor 12 may be a horizontal compressor 12 or a vertical compressor 12.

The second heat exchanging device 13 is configured to exchange heat between the water for washing dishes and the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 12, before the heat exchange, the water for washing dishes is low-temperature and low-pressure liquid water, after the heat exchange, the high-temperature and high-pressure gaseous refrigerant releases heat to be converted into the low-temperature and high-pressure liquid refrigerant, the low-temperature and low-pressure liquid water for washing dishes absorbs the heat to be converted into the high-temperature and low-pressure liquid water, and the high-temperature and low-pressure liquid water for washing dishes is pumped into the washing cavity 61 under the action of the washing pump 62, so that the dishes in the washing cavity 61 are effectively washed.

The second heat exchange device 13 may be a condenser or a condenser tube, and the specific expression form of the second heat exchange device 13 is not limited herein, and a designer may select the second heat exchange device according to actual conditions.

The throttling device 14 is configured to depressurize the low-temperature high-pressure liquid refrigerant after heat exchange with the second heat exchanging device 13, so that the low-temperature high-pressure liquid refrigerant is converted into a low-temperature low-pressure liquid refrigerant again after passing through the throttling device 14.

The throttling device 14 may include an expansion valve, and the low-temperature and high-pressure liquid refrigerant condensed by the second heat exchanging device 13 can be converted into low-temperature and low-pressure foggy liquid refrigerant after being throttled by a throttle orifice of the expansion valve, so as to create conditions for the next evaporation of the refrigerant in the first heat exchanging device 11. Of course, the throttling device 14 may be of other types, such as a capillary structure, and the like, without limitation.

Considering that the heat pump dishwasher 1 needs to fill the washing chamber 61 with new water for washing dishes before operation, as shown in fig. 1, in one embodiment, the heat pump dishwasher 1 further includes a second liquid inlet pipe 71 communicated with the washing chamber 61, and the second liquid inlet pipe 71 is communicated with the first liquid inlet pipe 31 in parallel. That is, the second liquid inlet pipeline 71 and the first liquid inlet pipeline 31 form a dual-mode liquid inlet mode, and the second liquid inlet pipeline 71 and the first liquid inlet pipeline 31 can share one water source, especially when the cold storage medium is water. In the design, through the second liquid inlet pipeline 71 which is designed to be communicated with the washing cavity 61, new water for washing tableware is conveniently injected into the washing cavity 61, so that the tableware can be effectively cleaned by the heat pump type dish washing machine 1, through the design that the second liquid inlet pipeline 71 is communicated with the first liquid inlet pipeline 31 in parallel, the second liquid inlet pipeline 71 and the first liquid inlet pipeline 31 can share one water source, and the water path structure of the heat pump type dish washing machine 1 is simplified.

Considering that the second liquid inlet pipe 71 is connected in parallel with the first liquid inlet pipe 31, as shown in fig. 1, to facilitate the water flow control of the second liquid inlet pipe 71 and the first liquid inlet pipe 31, it is further designed that, in an embodiment, the heat pump dishwasher 1 further includes a water softener 80 and a second water inlet valve 72, the second water inlet valve 72 is disposed on the second liquid inlet pipe 71, and the water softener 80 is disposed between the second water inlet valve 72 and the washing chamber 61. For example, when a user presses a trigger button when new water for washing dishes needs to be injected into the washing chamber 61, the trigger button sends a third electric signal to the controller, and after receiving the third electric signal, the controller controls the second water inlet valve 72 to be opened, so that the new water for washing dishes can be injected into the washing chamber 61 through the second liquid inlet pipeline 71. In this design, the on-off of the second liquid inlet pipe 71 is controlled by designing the second water inlet valve 72, so that the diversion control of the water flow of the second liquid inlet pipe 71 and the first liquid inlet pipe 31 can be conveniently realized, and by designing the water softener 80, the water softener 80 can soften the water flowing into the washing chamber 61 from the second water inlet valve 72 through the second liquid inlet pipe 71, so as to optimize the quality of the water for washing dishes.

Certainly, in other embodiments, the first liquid inlet pipeline 31 and the second liquid inlet pipeline 71 are connected in parallel, and the on-off of the first liquid inlet pipeline 31 and the on-off of the second liquid inlet pipeline 71 can also be controlled by the first water inlet valve 32 at the same time, at this time, the first water inlet valve 32 is a reversing valve, the reversing valve includes one water inlet and two water outlets, the water inlet of the reversing valve is connected to an external water source, one water outlet of the reversing valve is connected to the first liquid inlet pipeline 31, the other water outlet of the reversing valve is connected to the second liquid inlet pipeline 71, when water needs to be supplied to the washing chamber 61, the reversing valve is switched to open the water outlet connected to the second liquid inlet pipeline 71, and when water needs to be supplied to the cold storage medium container 20, the reversing valve is switched to open the water outlet connected to the first liquid inlet pipeline 31.

As shown in fig. 1, in order to improve the effect of the heat pump dishwasher 1 on cleaning the dishes, in one embodiment, the washing device 60 further includes a water diversion valve 63 and a plurality of (two or more) spray arms 64 located in the washing chamber 61, one end of the water diversion valve 63 is communicated with the washing pump 62, and the other end of the water diversion valve 63 is communicated with the plurality of spray arms 64. After being pumped out of the washing chamber 61 by the washing pump 62, the water for washing dishes is distributed to form a plurality of water paths through the diversion valve 63, and under the action of the washing pump 62, the water paths are pumped into the corresponding spray arms 64 again and sprayed out of the spray holes of the spray arms 64 to return to the washing chamber 61 again. The specific number, shape and structure of the spray arms 64, the relative position relationship and connection relationship between the spray arms 64 and the washing chamber 61, and the like are not limited, and a designer can reasonably design the spray arms according to different models of heat pump dishwashers 1.

As shown in fig. 1, of course, the heat pump dishwasher 1 may further include a second drain pump 90, and the second drain pump 90 is communicated with the washing chamber 61 to draw the sewage formed after the dishes are washed out of the washing chamber 61.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A heat pump dishwasher, comprising:

a heat pump capable of containing a refrigerant;

the cold accumulation medium container can contain a cold accumulation medium which exchanges heat with the refrigerant, is connected with the heat pump and is provided with a liquid inlet and a liquid outlet;

the first liquid inlet pipeline is connected with the liquid inlet;

the liquid discharging pipeline is connected with the liquid outlet and can discharge the cold accumulation medium to the outside of the shell of the heat pump type dish washing machine; and a process for the preparation of a coating,

and the control device can control the on-off of the liquid discharge pipeline.

2. The heat pump dishwasher of claim 1, wherein the control device comprises a controller configured to conduct the drain line when the heat pump is operated a preset number of times.

3. The heat pump dishwasher of claim 2 further comprising a first drain pump disposed in the drain line, wherein the controller turns on the first drain pump when the heat pump is operated up to the predetermined number of times.

4. The heat pump dishwasher of claim 2 further comprising a first water inlet valve, the control device further comprising a level sensor, the first water inlet valve being disposed in the first water inlet line, the level sensor collecting a level of the cold storage medium in the cold storage medium container, the controller opening the first water inlet valve when the level reaches a predetermined range.

5. The heat pump dishwasher of claim 4, wherein the controller is configured to open the first water inlet valve when the level of the cold storage medium within the cold storage medium container is at a preset level, wherein the preset level is a lower limit of the preset range.

6. The heat pump dishwasher of claim 1 further comprising a washing device comprising a washing chamber and a washing pump, the washing chamber in communication with the washing pump to form a water supply circuit for circulating water for washing dishes.

7. The heat pump dishwasher according to claim 6, wherein the heat pump comprises a first heat exchange device, a compressor, a second heat exchange device and a throttling device, wherein the first heat exchange device, the compressor, the second heat exchange device and the throttling device are sequentially communicated to form a circulation loop for circulating the cooling medium, and the second heat exchange device is serially communicated between the washing chamber and the washing pump to form a part of the water supply loop.

8. The heat pump dishwasher of claim 6, further comprising a second inlet line in communication with the washing chamber, the second inlet line being in parallel with the first inlet line.

9. The heat pump dishwasher of claim 8, further comprising a water softener disposed between the second water inlet valve and the wash chamber and a second water inlet valve disposed in the second water inlet line.

10. The heat pump dishwasher of any one of claims 6-9, the washing apparatus further comprising a shunt valve and a plurality of spray arms positioned within the washing chamber, one end of the shunt valve in communication with the wash pump and another end of the shunt valve in communication with the plurality of spray arms.

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