CN212117903U - Multi-section heating control system and water dispenser - Google Patents

Abstract

The utility model provides a multi-stage heating control system and a water dispenser, wherein the multi-stage heating control system comprises a pure water tank, a preheating water tank, a valve component, a water pump, a heating device and a controller; the valve component is at least provided with two water inlets and a water outlet; one water inlet is communicated with the pure water tank through a preheating water tank to form a preheating passage; the other water inlet is directly communicated with the pure water tank to form a cold water passage; the water outlet is communicated with the heater through a water pump; the controller is respectively electrically connected with the preheating water tank, the valve component, the water pump and the heating device. When water at normal temperature is needed, the water in the pure water tank directly flows out from the cold water passage; when warm water is needed, water in the pure water tank flows out from the preheating passage and is heated by the preheating water tank to obtain warm water; when needs boiling water, water heats through heating device reheating after preheating the water tank in advance, is favorable to reaching boiling temperature and boiling in the water short time, realizes obtaining the boiling water of great flow in the short time, satisfies user's demand.

Description

Multi-section heating control system and water dispenser

Technical Field

The utility model relates to a water dispenser device especially relates to a multistage heating control system and water dispenser.

Background

The instant heating type water dispenser is a novel intelligent water dispenser, adopts a heating mode that a heating device is arranged on a water flow pipeline to heat water in a flowing process, and has the characteristics that hot water is discharged immediately and is not required to be heated repeatedly. Due to the power limitation of the household appliances, if the water is rapidly heated to boiling in a short time, the flow rate of the water needs to be limited, so that the water is prevented from being discharged before reaching the boiling temperature due to the excessively high flow rate, and real boiling cannot be realized. However, limiting the flow rate of water makes it difficult to meet the water demand of the user.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model aims to provide a multi-section heating control system and a water dispenser, which have the advantages of realizing large flow and providing boiling water, etc.

In order to achieve the above object, the utility model adopts the following technical scheme: a multi-section heating control system comprises a pure water tank, a preheating water tank, a valve component, a water pump, a heating device and a controller; the valve component is at least provided with two water inlets and a water outlet; one water inlet is communicated with the pure water tank through a preheating water tank to form a preheating passage; the other water inlet is directly communicated with the pure water tank to form a cold water passage; the water outlet is communicated with the heater through a water pump; the controller is respectively electrically connected with the preheating water tank, the valve component, the water pump and the heating device.

According to the scheme, the valve assembly can be controlled by the controller when normal-temperature water is needed through the connection among the preheating passage, the valve assembly, the controller and various structures of the system, so that water in the pure water tank directly flows out from the cold water passage; when the warm water is needed, the valve component can be controlled by the controller, so that the water in the pure water tank flows out from the preheating passage and is heated by the preheating water tank to obtain the warm water; when the boiling water is needed, the valve component can be controlled through the controller, and the heating device is controlled to work, so that the water is preheated by the preheating water tank and then is heated again by the heating device, and the boiling temperature of the water can be reached in a short time to boil the water. Therefore, the boiling water with a large flow can be obtained in a short time, and the requirements of users are met.

Optionally, when the controller receives an instruction of outputting normal-temperature water, the controller controls the preheating passage to be closed and the cold water passage to be opened through the valve assembly, and controls the heating device to stop operating; when the controller receives an instruction of outputting warm water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the preheating water tank to run and the heating device to stop running; when the controller receives an instruction of outputting boiling water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the preheating water tank and the heating device to run. The working state of the valve component is controlled through the controller, and the opening and closing of the preheating passage and the cold water passage are controlled, so that the water temperature of the water body entering the heating device is controlled, and the requirement of a user on the water temperature is met.

Optionally, the valve assembly is an electromagnetic directional valve; or the valve component comprises two normally closed electromagnetic valves which are respectively used for controlling the opening and closing of the preheating passage and the cold water passage.

Optionally, the multi-stage heating control system further comprises a first-stage water-steam separation device; the heating device comprises a heating cavity; the bottom and the top of the heating cavity are respectively provided with a pure water inlet and a pure water outlet; the primary water-vapor separation device comprises a boiling water channel, a boiling cavity, a steam cavity and an exhaust channel which are sequentially communicated; the boiling water channel is provided with a boiling water outlet; the boiling cavity is communicated with the water outlet of the heating device through the boiling water channel and is positioned at the top of the boiling water channel; the exhaust channel is located at the top of the steam cavity. Through the arrangement of the primary water-vapor separation device, water in the heating cavity is heated and boiled and then is subjected to water-vapor separation through the primary water-vapor separation device, so that hot water and steam are effectively separated, and the situations that water flow is unstable and a user is scalded due to the fact that the steam flows out along with the boiled water are prevented; the top that is located the heating cavity through the delivery port, the pure water import is located the bottom of heating cavity and the setting that the boiling water export is located the top of heating cavity, after the boiling water boiling spills over from the top, the pure water import spills over the boiling water passageway and further flows from the boiling water export to the delivery port that makes the boiling water can last the self-heating cavity to the heating cavity moisturizing, and the inside water that fills all the time of heating cavity simultaneously, and then prevents when guaranteeing that boiling water can last the output that heating device from burning futilely damages equipment or causes the accident.

Optionally, the boiling cavity and the steam cavity are formed by arranging a lower baffle on the inner bottom surface of a cavity in a separated manner; and a steam channel communicated with the steam cavity is formed by a gap between the top end of the lower baffle and the inner top surface of the boiling cavity.

Optionally, the inner bottom surface of the steam cavity is arranged in a manner of inclining upwards from one side of the steam cavity connected with the lower baffle to the other side of the steam cavity to form a backflow inclined surface; the end surface of one side of the lower baffle plate is arranged at intervals with the inner wall of the junction of the boiling cavity and the steam cavity to form a first return channel for communicating the boiling cavity and the steam cavity; an upper baffle is arranged on the inner top surface of the steam cavity; and a return channel communicated with the steam channel is formed by a gap between the bottom end of the upper baffle and the return inclined plane. Through the setting of backward flow inclined plane and first return flow way for when the in-process liquefaction of steam self-boiling cavity motion to steam cavity, liquid can flow back to boiling cavity along backward flow inclined plane and first return flow way, prevents that the inside ponding of steam cavity from breeding the bacterium, improves steam separator's cleanliness factor and safety in utilization. The movement distance of the steam is increased through the upper baffle, the liquefaction degree of the steam is increased to a certain extent, and the water-vapor separation is effectively carried out.

Optionally, the multi-stage heating control system further comprises a secondary water-vapor separation device, wherein the secondary water-vapor separation device comprises an exhaust passage and a water outlet passage; the exhaust passage comprises an air inlet channel, an exhaust cavity and an exhaust through gap which are communicated in sequence; the intake passage is communicated with the exhaust passage; the other end of the exhaust through gap, which is opposite to the end communicated with the exhaust cavity, forms an exhaust port; the water outlet passage comprises a hot water inlet passage, a hot water cavity and a hot water outlet passage which are sequentially communicated from top to bottom; the hot water inlet channel is communicated with the boiling water outlet; and the top of the side wall of the hot water cavity is provided with an exhaust hole communicated with the exhaust cavity. The arrangement of the secondary water-vapor separation device is favorable for carrying out water-vapor separation on the hot water again and further discharging the steam in the hot water; through the arrangement that the top of the hot water cavity is communicated with the exhaust cavity through the exhaust hole gap, steam in the hot water cavity can be exhausted to the exhaust cavity through the exhaust hole gap; in addition, when the water level in the hot water cavity is higher than the exhaust hole gap due to overlarge water flow of the hot water inlet channel, hot water can overflow along the exhaust hole gap, and the situations that the cavity is broken due to overlarge water pressure in the hot water cavity are prevented.

Optionally, the secondary water-vapor separation device includes an outer shell, an inner shell, and a secondary cover; the top of the outer shell is opened, and an accommodating cavity matched with the shape of the inner shell is arranged in the outer shell; the top of the inner shell is opened, and a hot water cavity and a hot water outlet channel are formed inside the inner shell; the inner shell is embedded in the containing cavity, so that a space between the outer wall of the hot water cavity and the inner wall of the containing cavity forms an exhaust cavity, and an exhaust through gap is formed between the outer wall of the hot water outlet channel and the inner wall of the containing cavity at intervals; the secondary cover body is buckled at the top of the outer shell, and a vent hole is formed in a gap between the bottom of the secondary cover body and the top of the inner shell; the air inlet channel and the hot water inlet channel are arranged on the secondary cover body; the air inlet channel, the exhaust cavity and the exhaust through gap are sequentially arranged from top to bottom. The installation mode that the inner shell is embedded into the outer shell reduces the heat transfer of the inner shell to a certain extent, and is beneficial to reducing the heat loss in the hot water flowing process; in addition, the steam moves between the outer wall of the inner shell and the inner wall of the outer shell and is liquefied to release heat, and the inner shell is further insulated.

The utility model also provides a water dispenser, including above-mentioned arbitrary multistage heating control system. Because the water dispenser comprises any one of the multi-section heating control systems, the water dispenser also has the beneficial technical effects generated by the multi-section heating control system, and the description is omitted here.

Drawings

Fig. 1 is a block diagram of a multi-stage heating control system according to an embodiment of the present invention;

FIG. 2 is a block diagram of a multi-stage heating control system according to another embodiment of the present invention;

FIG. 3 is a front view of the first stage water-vapor separation device of the present invention;

FIG. 4 is an overall structure diagram of the primary water-vapor separation device of the present invention;

FIG. 5 is a block diagram of a multi-stage heating control system according to another embodiment of the present invention;

FIG. 6 is a front view of the second stage water-vapor separator of the present invention;

FIG. 7 is a sectional view of the second stage water-vapor separator of the present invention;

in the figure:

2-a first-stage water-vapor separation device; 21-a boiling water channel; 211-a temperature sensor; 212-a boiling water outlet; 22-a boiling chamber; 23-a steam chamber; 24-an exhaust channel; 25-a lower baffle; 251-a first return channel; 26-an upper baffle plate; 261-reflux ramp; 27-a primary shell; 28-primary cover body;

3-a secondary water-vapor separation device; 31-an intake passage; 32-an exhaust cavity; 321-exhaust air gaps; 33-exhaust vent; 331-an exhaust port; 34-a hot water inlet channel; 35-a hot water cavity; 36-hot water outlet channel; 37-an outer shell; 38-an inner housing; 39-secondary cover.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described below with reference to fig. 1-7 are exemplary and intended to explain the present invention. In addition, in the description of the present invention, the terms "top", "bottom", "inner", "outer", "horizontal", "vertical", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is merely for convenience of description and thus should not be construed as limiting the present invention.

Referring to fig. 1, a multi-stage heating control system includes a pure water tank, a preheating water tank, a valve assembly, a water pump, a heating device, and a controller; the valve component is at least provided with two water inlets and a water outlet; one water inlet is communicated with the pure water tank through a preheating water tank to form a preheating passage; the other water inlet is directly communicated with the pure water tank to form a cold water passage; the water outlet is communicated with the heater through a water pump; the controller is respectively electrically connected with the preheating water tank, the valve component, the water pump and the heating device.

The working principle of the multi-stage heating control system in an embodiment of the present invention is described as follows:

first, the water flow path in the multistage heating control system is as follows: when the controller controls the valve assembly to open the cold water passage and close the preheating passage, the water pump pumps the normal-temperature water in the pure water tank into the heating device from the cold water passage; when the controller controls the valve assembly to close the cold water passage and open the preheating passage, the water pump pumps the normal-temperature water in the pure water tank into the heating device after the normal-temperature water in the pure water tank is preheated by the preheating passage and the preheating water tank.

Secondly, the working process of the multi-section heating control system is as follows: when the controller receives an instruction of outputting normal-temperature water, the controller controls the preheating passage to be closed and the cold water passage to be opened through the valve assembly, and controls the water pump to operate and the heating device to stop operating; therefore, the normal temperature water is pumped into the heating device by the water pump and then flows out of the system. When the controller receives an instruction of outputting warm water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the water pump to run, the preheating water tank to run and the heating device to stop running; therefore, the normal-temperature water automatically enters the preheating water tank under the action of gravity, is heated in the preheating water tank in the preheating passage and then is pumped into the heating device by the water pump and flows out of the system. When the controller receives an instruction of outputting boiling water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the water pump, the preheating water tank and the heating device to operate; the normal temperature water automatically enters the preheating water tank under the action of gravity, and is heated in the preheating water tank in the preheating passage and then is pumped into the heating device by the water pump, at the moment, the preheating water tank is closed, the heating device is started to heat again to boil, and the boiling water flows out from a water outlet of the heating device. Therefore, the structure and the connection relation of all components in the system are utilized, the working state of the valve component is controlled through the controller, and the opening and closing of the preheating passage and the cold water passage are further controlled, so that the water temperature of the water body entering the heating device is controlled, the boiling water with larger flow can be obtained in a short time, and the requirements of users are met.

It should be noted that, in the foregoing, each instruction received by the controller may be input by a user through a remote controller, a key, a touch panel, or a voice control mode, and accordingly, the multi-stage heating control system may further include at least one of a remote control device, an operation panel, a touch panel, and a voice input module, which are respectively in communication connection with the controller.

In an embodiment, the valve assembly is an electromagnetic directional valve, and based on this, the connection relationship of the electromagnetic directional valve is known according to the above principle, and is not described herein again.

In one embodiment, the valve assembly includes two normally closed solenoid valves for controlling the opening and closing of the preheating passage and the cold water passage, respectively.

In an embodiment, a temperature measuring device is disposed in the preheating water tank and is in communication with the controller for detecting the temperature of water in the preheating water tank and sending a detection signal to the controller, so that the controller controls the operating state of the water pump according to the received detection signal. For example, when the controller determines that the temperature of the water in the preheating water tank reaches a first preset temperature according to the detection signal, the controller starts the water pump to pump the water in the preheating water tank into the heating device through the water pump.

In one embodiment, a temperature measuring device is disposed in the pure water tank and is in communication with the controller for detecting the temperature of water in the pure water tank and sending a detection signal to the controller, so that the controller controls the operating state of the preheating water tank or the heating device according to the received detection signal. For example, the controller determines the temperature difference between the water temperature in the pure water tank and the water temperature preset by the user according to the detection signal, thereby controlling the heating power of the preheating water tank or the heating device.

In one embodiment, the temperature measuring device may be an NTC sensor or a platinum resistance sensor.

In order to prevent the situation that steam flows out along with boiling water to cause unstable water flow and scald users, in one embodiment, the multi-stage heating control system further comprises a primary water-steam separation device 2, as shown in fig. 2-3; the heating device comprises a heating cavity, the bottom and the top of the heating cavity are respectively provided with a pure water inlet and a pure water outlet, and the pure water inlet is communicated with a pure water tank through a water pump; the primary water-vapor separation device 2 comprises a boiling water channel 21, a boiling cavity 22, a steam cavity 23 and an exhaust channel 24 which are communicated in sequence; the boiling water channel 21 is provided with a boiling water outlet 212; the boiling cavity 22 is communicated with the water outlet through the boiling water channel 21 and is positioned at the top of the boiling water channel 21; the exhaust channel 24 is located at the top of the steam chamber 23.

The following describes a process of the primary water-vapor separation device 2 for separating water and vapor from boiling water output by the heating device:

warm water preheated by the preheating water tank enters the heating cavity from the pure water inlet and is heated to boil, as the water outlet is communicated with the boiling water channel 21 and the boiling water channel 21 is communicated with the boiling cavity 22, boiling water is boiled in the boiling cavity 22, and water vapor in the boiling water rises to the top of the boiling cavity 22 and is discharged from the exhaust channel 24; the boiling water passage 21 is provided with a boiling water outlet 212, and boiling water flows out from the boiling water outlet 212. Therefore, the effective separation of the steam in the boiling water and the boiling water is realized; the setting that is located the top of heating cavity, the bottom that the pure water import is located the heating cavity and boiling water export 212 is located the top of heating cavity through the delivery port, after the boiling water boiling spills over from the top, the pure water import spills over boiling water passageway 21 to the delivery port that makes the boiling water can last the self-heating cavity to the heating cavity moisturizing, heats the inside water that fills all the time of cavity simultaneously, and then prevents when guaranteeing that boiling water can last output that heating device from burning futilely damages equipment or causing the accident.

In one embodiment, the boiling chamber 22 and the steam chamber 23 are separated by a lower baffle 25 disposed on the inner bottom surface of the chamber; the gap between the top of the lower baffle 25 and the inner top surface of the boiling chamber 22 forms a steam channel communicating with the steam chamber 23.

To recover the water in the steam, in one embodiment, the inner bottom surface of the steam chamber 23 is inclined upward from the side where it meets the lower baffle 25 to the other side, forming a return inclined surface 261. Part of the vapor flowing through the vapor channels and the vapor chamber 23 liquefies to form water droplets, which flow along the backflow ramp 261 to the lower baffle 25. When the height of the accumulated liquid level of the water drops flowing back to the lower baffle 25 is higher than that of the lower baffle 25, the water drops can flow back to the boiling cavity 22 through the steam channel at the top of the lower baffle 25, so that the liquefied water drops can be reused.

Although the water drops formed after the steam liquefaction are recovered while the steam liquefaction is realized through the mode, the water drops need to be accumulated to a certain degree at the lower baffle 25 to be recovered and utilized, so that the recovery time of the water drops after the liquefaction is long, and part of the water drops cannot be recovered due to the fact that the water drops cannot cross the lower baffle 25, and the recovery utilization rate of the water drops is low. Therefore, to solve the above technical problem, in an embodiment, an end surface of one side of the lower baffle 25 is spaced apart from an inner wall of a boundary between the boiling cavity 22 and the steam cavity 23 to form a first return channel 251 for communicating the boiling cavity 22 and the steam cavity 23, as shown in fig. 4. Based on this, the end surface of the other side of the lower baffle 25 may also be disposed at an interval with the inner wall of the boundary of the boiling cavity 22 and the steam cavity 23 to form a second return channel communicating the boiling cavity 22 and the steam cavity 23. Through the arrangement of the first return channel 251 and the second return channel, water drops flow along the return inclined plane 261 and flow back to the boiling cavity 22 through the first return channel 251 or the second return channel, so that the water drops are recovered again, and the recovery speed and the utilization rate of the water drops are improved; can also prevent the inside ponding of steam cavity 23 and breed the bacterium, improve steam separator's cleanliness factor and safety in utilization.

In one embodiment, in order to extend the flow path of the vapor and improve the liquefaction degree of the vapor, the inner top surface of the vapor chamber 23 is provided with an upper baffle 26; the gap between the bottom end of the upper baffle 26 and the return slope 261 forms a return channel communicating with the vapor channel. The steam flows out from the exhaust channel 24 after bypassing the lower baffle 25 and the upper baffle 26 in the boiling cavity 22, and is liquefied to form water drops in the flowing process, so that the water content of the steam is reduced, and the water-steam separation degree is further improved.

In order to facilitate cleaning, maintenance and overhaul of the interior of the primary water-vapor separation device 2, in an embodiment, the primary water-vapor separation device 2 further includes a primary housing 27 and a primary cover 28 covering the top of the housing; the top of the primary shell 27 is open and hollow; the lower baffle 25 is formed by extending part of the inner bottom surface of the primary shell 27 upwards; the boiling water channel 21 is formed by the bottom of the boiling cavity 22 in the primary shell 27 through and extending downwards; the upper baffle 26 is formed by partially extending downwards from the bottom surface of the primary cover 28; the vent passage 24 is formed by a primary cover 28 extending partially therethrough and upwardly. The boiling cavity 22 and the steam cavity 23 can be cleaned, maintained and overhauled by detaching and separating the primary shell 27 and the primary cover 28; baffle 25, boiling water passageway 21 all with one-level casing 27 integrated into one piece down, and go up baffle 26, exhaust passage 24 all with one-level lid 28 integrated into one piece, prevent ponding between the structure of one-level steam separator 2 inside and the cavity to prevent that the inside stagnant water of cavity from breeding the bacterium and polluting the drinking water.

In an embodiment, the communicating portion between the boiling cavity 22 and the boiling water channel 21 is a funnel-shaped structure, and the funnel-shaped communicating portion is beneficial to increasing the surface area of the water body, so that the gas in the water body is easier to overflow, and more effective water-vapor separation is realized.

In an embodiment, the outer side wall of the boiling water channel 21 is provided with the temperature sensor 211, the temperature sensor 211 is arranged outside the boiling water channel 21, and the temperature sensor 211 is in communication connection with the controller, so that the temperature of the water flow in the boiling water channel 21 can be measured more accurately, and the controller can further control the water dispenser more accurately.

In one embodiment, the temperature sensor 211 may be an NTC sensor or a platinum resistance sensor.

In one embodiment, the boiling chamber 22 is a transparent chamber, and the inside of the boiling chamber 22 can be observed through the transparent arrangement for visualization.

Referring to fig. 5-7, in order to more effectively perform the water-vapor separation, in one embodiment, the water dispenser heating system further comprises a secondary water-vapor separation device 3; the secondary water-vapor separation device 3 includes an exhaust passage and a water outlet passage.

The exhaust passage comprises an air inlet channel 31, an exhaust cavity 32 and an exhaust through gap 33 which are communicated in sequence; an exhaust port 331 is formed at the other end of the exhaust through gap 33 opposite to the end communicating with the exhaust cavity 32; the intake passage 31 communicates with the exhaust passage 24; the other end of the exhaust through gap 33 opposite to the end communicating with the exhaust cavity 32 forms an exhaust port 331. The water outlet passage comprises a hot water inlet channel 34, a hot water cavity 35 and a hot water outlet channel 36 which are sequentially communicated from top to bottom; the hot water inlet passage 34 communicates with the boiling water outlet 212. The top of the side wall of the hot water cavity 35 is provided with an exhaust aperture 321 communicated with the exhaust cavity 32.

In one embodiment, the end of the exhaust port 331 is flush with the end of the hot water outlet passage 36.

The following describes the process of water-vapor separation and gas discharge by the secondary water-vapor separation device 3:

the steam separated by the primary water-vapor separating device 2 is discharged from the exhaust passage 24, flows through the intake passage 31, the exhaust cavity 32, and the exhaust gas passage 33 in this order, and is finally discharged from the exhaust port 331. The boiling water separated by the primary water-vapor separation device 2 flows out from the boiling water inlet to the hot water inlet channel 34 and the hot water cavity 35, and then flows out through the hot water outlet channel 36. The steam in the hot water flowing through the hot water cavity 35 rises to the top of the hot water cavity 35 and flows to the exhaust cavity 32 from the exhaust hole 321, and then is discharged from the exhaust through gap 33, so that the water vapor is separated again, the gas content in the water is further reduced, and the hot water injection is prevented from scalding the personnel. In addition, when the water flow of the hot water inlet channel 34 is too large, which causes the water level in the hot water cavity 35 to be higher than the exhaust gap, the hot water can overflow along the exhaust gap 321, thereby preventing the cavity from being broken due to the too large water pressure in the hot water cavity 35.

In one embodiment, the secondary water vapor separation device 3 includes an outer casing 37, an inner casing 38, and a secondary cover 39 in order to clean, maintain, and repair the inside of the secondary water vapor separation device 3. The outer shell 37 is open at the top and has a receiving cavity inside, which matches the shape of the inner shell 38. The top of the inner shell 38 is open, and a hot water cavity 35 and a hot water outlet channel 36 are formed inside; the inner housing 38 is inserted into the accommodating cavity, such that the space between the outer wall of the hot water cavity 35 and the inner wall of the accommodating cavity forms the exhaust cavity 32, and the space between the outer wall of the hot water outlet channel 36 and the inner wall of the accommodating cavity forms the exhaust gap 321.

The secondary cover body 39 covers and buckles the top of the outer shell 37, and an exhaust hole 321 is formed in a gap between the bottom of the secondary cover body 39 and the top of the inner shell 38; the air inlet passage 31 and the hot water inlet passage 34 are provided in the secondary cover 39. The air inlet passage 31, the exhaust cavity 32 and the exhaust aperture 321 are sequentially arranged from top to bottom. By detaching and separating the secondary shell and the secondary cover 39, the hot water body and the exhaust cavity 32 can be cleaned, maintained and overhauled; the installation mode that the inner shell 38 is embedded into the outer shell 37 reduces the heat transfer of the inner shell 38 to a certain extent, and is beneficial to reducing the heat loss in the hot water flowing process; in addition, the steam moves between the outer wall of the inner casing 38 and the inner wall of the outer casing 37 and is liquefied to release heat, and further, the inner casing 38 is insulated.

In one embodiment, the inner housing 38 is funnel-shaped, and the junction between the hot water cavity 35 and the hot water outlet channel 36 is funnel-shaped.

In one embodiment, the hot water outlet channel 36 is funnel-shaped. The funnel-shaped arrangement with the large upper part and the small lower part prevents hot water from being directly sprayed to the hot water outlet channel 36 from the hot water inlet channel 34, and is beneficial to buffering the hot water in the hot water cavity 35 and discharging the hot water from the hot water outlet channel 36 smoothly.

In one embodiment, the outer wall of the outer casing 37 is provided with threads for mounting and fixing inside the water dispenser, and a dust-proof casing or a water outlet valve can also be sleeved outside the outer casing 37.

On the other hand, the utility model also provides a water dispenser that contains the multistage heating control system of any one of the above-mentioned embodiments. Other structures of the water dispenser except for the multi-stage heating control system can be referred to related technologies, and are not described herein.

Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in the combination between the features, but is limited to the space and is not described one by one.

The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.

Claims (10)

1. A multi-section heating control system is characterized by comprising a pure water tank, a preheating water tank, a valve component, a water pump, a heating device and a controller; the valve component is at least provided with two water inlets and a water outlet; one water inlet is communicated with the pure water tank through a preheating water tank to form a preheating passage; the other water inlet is directly communicated with the pure water tank to form a cold water passage; the water outlet is communicated with the heater through a water pump; the controller is respectively electrically connected with the preheating water tank, the valve component, the water pump and the heating device.

2. The multistage heating control system according to claim 1, wherein when the controller receives a command to output normal temperature water, the controller controls the preheating passage to be closed and the cold water passage to be opened through the valve assembly, and controls the heating device to stop operating; when the controller receives an instruction of outputting warm water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the preheating water tank to run and the heating device to stop running; when the controller receives an instruction of outputting boiling water, the controller controls the preheating passage to be opened and the cold water passage to be closed through the valve assembly, and controls the preheating water tank and the heating device to run.

3. The multi-stage heating control system according to claim 2, wherein the valve assembly is a solenoid directional valve; or the valve component comprises two normally closed electromagnetic valves which are respectively used for controlling the opening and closing of the preheating passage and the cold water passage.

4. The multi-stage heating control system according to claim 1, wherein the pure water tank, the preheating water tank and the outlet of the heating device are respectively provided with a temperature sensor.

5. The multi-stage heating control system according to claim 1, further comprising a primary moisture separation device; the heating device comprises a heating cavity; the bottom and the top of the heating cavity are respectively provided with a pure water inlet and a pure water outlet;

the primary water-vapor separation device comprises a boiling water channel, a boiling cavity, a steam cavity and an exhaust channel which are sequentially communicated; the boiling water channel is provided with a boiling water outlet; the boiling cavity is communicated with the water outlet of the heating device through the boiling water channel and is positioned at the top of the boiling water channel; the exhaust channel is located at the top of the steam cavity.

6. The multiple stage heating control system of claim 5, wherein the boiling chamber and the steam chamber are separated by a lower baffle disposed on an inner bottom surface of the chamber; and a steam channel communicated with the steam cavity is formed by a gap between the top end of the lower baffle and the inner top surface of the boiling cavity.

7. The multi-stage heating control system according to claim 6, wherein the inner bottom surface of the steam chamber is inclined upward from one side thereof connected to the lower baffle plate to the other side thereof to form a backflow inclined surface; the end surface of one side of the lower baffle plate is arranged at intervals with the inner wall of the junction of the boiling cavity and the steam cavity to form a first return channel for communicating the boiling cavity and the steam cavity; an upper baffle is arranged on the inner top surface of the steam cavity; and a return channel communicated with the steam channel is formed by a gap between the bottom end of the upper baffle and the return inclined plane.

8. The multi-stage heating control system according to claim 5, further comprising a secondary moisture separation device comprising an exhaust passage and a water outlet passage;

the exhaust passage comprises an air inlet channel, an exhaust cavity and an exhaust through gap which are communicated in sequence; the intake passage is communicated with the exhaust passage; the other end of the exhaust through gap, which is opposite to the end communicated with the exhaust cavity, forms an exhaust port;

the water outlet passage comprises a hot water inlet passage, a hot water cavity and a hot water outlet passage which are sequentially communicated from top to bottom; the hot water inlet channel is communicated with the boiling water outlet; and the top of the side wall of the hot water cavity is provided with an exhaust hole communicated with the exhaust cavity.

9. The multi-stage heating control system according to claim 8, wherein the secondary moisture separator comprises an outer shell, an inner shell, and a secondary cover; the top of the outer shell is opened, and an accommodating cavity matched with the shape of the inner shell is arranged in the outer shell; the top of the inner shell is opened, and a hot water cavity and a hot water outlet channel are formed inside the inner shell; the inner shell is embedded in the containing cavity, so that a space between the outer wall of the hot water cavity and the inner wall of the containing cavity forms an exhaust cavity, and an exhaust through gap is formed between the outer wall of the hot water outlet channel and the inner wall of the containing cavity at intervals; the secondary cover body is buckled at the top of the outer shell, and a vent hole is formed in a gap between the bottom of the secondary cover body and the top of the inner shell; the air inlet channel and the hot water inlet channel are arranged on the secondary cover body; the air inlet channel, the exhaust cavity and the exhaust through gap are sequentially arranged from top to bottom.

10. A water dispenser comprising a multi-stage heating control system as claimed in any one of claims 1 to 9.

Images