CN114719499A

CN114719499A - Refrigerator and control method

Info

Publication number: CN114719499A
Application number: CN202110012935.1A
Authority: CN
Inventors: 任伟涛; 成俊亮; 张绍红; 李大伟; 郑皓宇
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2022-07-08

Abstract

The invention discloses a refrigerator and an operation method thereof, wherein the refrigerator comprises a refrigerator body, a refrigerator door and a refrigerator door, wherein the refrigerator body is provided with a cooling cavity and a heat insulation layer positioned outside the cooling cavity; the refrigerating system is arranged on the box body and is provided with an evaporator for providing cold energy for the cooling cavity; the drinking system is arranged on the box body and is provided with a drinking channel and a valve body arranged on the drinking channel; the beverage conveying channel is provided with a beverage outlet and a beverage inlet which penetrate through the heat-insulating layer to be communicated with the outer side of the box body, and the evaporator is provided with a cold supply part which extends to the side of the beverage conveying channel. The refrigerator disclosed by the invention is provided with the drinking system of the container, the container of the drinking system is used for containing drinks, the drinking receiving port is arranged on the refrigerator body of the refrigerator, the drinking receiving port is connected to the container through the drinking conveying channel, and meanwhile, the cold energy generated by the refrigerating system of the refrigerator can only cool the drinks in the drinking conveying channel in the process that the drinks flow in the drinking conveying channel, so that the refrigerating or heating efficiency is improved, and the drinks flowing out of the drinking receiving port have the required temperature.

Description

Refrigerator and control method

Technical Field

The invention relates to the field of household appliances, in particular to a refrigerator and an operation and control method.

Background

In summer, the cold drink is a busy season of cold drink demand, in the prior art, a refrigerator is mostly adopted for obtaining the cold drink, bottled drinks or beer are placed in a refrigerator chamber, and cold energy is transferred to the drinks through natural convection in the refrigerator chamber so as to realize cooling of the drinks. The cooling efficiency of the beverage cooled by adopting the mode is lower, and the beverage can obtain the required cold energy only by long enough time in the compartment.

Therefore, it is necessary to provide a refrigerator capable of improving cooling efficiency.

Disclosure of Invention

The invention aims to provide a refrigerator to solve the defects in the prior art, and the refrigerator can be cooled by cold energy from a refrigerating system of the refrigerator in a beverage conveying channel in the beverage flowing process, so that the refrigerating or heating efficiency is improved.

The invention provides a refrigerator, which comprises a refrigerator body, a refrigerator door and a refrigerator door, wherein the refrigerator body is provided with a cooling cavity and a heat insulation layer positioned outside the cooling cavity;

the refrigerating system is arranged on the box body and is provided with an evaporator for providing cold energy for the cooling cavity;

the drinking system is arranged on the box body and is provided with a drinking channel and a valve body arranged on the drinking channel;

the beverage conveying channel is provided with a beverage outlet and a beverage inlet which penetrate through the heat-insulating layer to be communicated with the outer side of the box body, and the evaporator is provided with a cold supply part which extends to the side of the beverage conveying channel.

Furthermore, the beverage taking system also comprises a container arranged at the top of the box body, the container is provided with an accommodating cavity, an accommodating cavity inlet and an accommodating cavity outlet, and the accommodating cavity outlet is communicated with the beverage inlet; the drink inlet is arranged at the top of the box body.

Furthermore, the box body is provided with an evaporation chamber arranged on the upper side of the cooling cavity, and the evaporator is arranged in the evaporation chamber.

Furthermore, the box body is also provided with an air duct which is arranged at the rear side of the cooling cavity and communicated with the evaporation cavity, an air door which is arranged between the air duct and the cooling cavity, and a cooling fan which is arranged between the evaporation cavity and the air duct and used for enhancing the cold quantity transmission.

Furthermore, the refrigerator is also provided with a door body, the drinking system further comprises a distributor arranged on the door body, the distributor is provided with a drinking receiving port arranged on the outer side of the door body, an inlet arranged on the inner side of the door body and a channel communicated with the drinking receiving port and the inlet, and the beverage outlet is arranged on the front side of the refrigerator body and is opposite to the inlet.

Further, a temperature sensor is arranged on the channel or at the position of the beverage outlet.

Furthermore, an evaporation coil is arranged on the evaporator, a coolant flows in the evaporation coil, and the cold supply part is a bypass evaporation pipe which is connected with the evaporation coil in parallel and is used for the coolant to flow.

Furthermore, an electromagnetic valve is arranged on the bypass evaporation tube.

Further, the cold supply part transmits cold energy to the drink conveying channel through the heat exchange unit; the heat exchange unit comprises a cold supply channel, a heat exchange channel and a heat conducting piece arranged between the cold supply channel and the heat exchange channel, wherein the cold supply part is arranged in the cold supply channel or the cold supply channel is a part of the cold supply part; the drink conveying channel penetrates through the heat exchange channel or the heat exchange channel is a part of the drink conveying channel.

Furthermore, the cooling channel and the heat exchange channel are coaxially arranged, the heat exchange channel covers the cooling channel, and the heat conducting piece is a wall plate for separating the cooling channel from the heat exchange channel.

Furthermore, the cold supply part transmits cold energy to the drink conveying channel through a heat exchange unit, the heat exchange unit is provided with a heat exchange channel, the heat exchange channel is a part of the drink conveying channel, and the cold supply part is provided with a cold supply pipe arranged in the heat exchange channel.

Furthermore, the heat exchange unit comprises a shell which covers the outer side of the cooling part, the drink conveying channel comprises a heat exchange tube arranged in the heat exchange unit, and a heat conduction medium is filled between the heat exchange tube and the cooling part.

Furthermore, the refrigerator also comprises a control unit and a drinking switch, wherein the control unit is electrically connected with the valve body and the drinking switch.

The invention further discloses a control method of the refrigerator, which comprises the following steps:

acquiring signal data of the drink taking switch and controlling the valve body, the electromagnetic valve and the refrigerating system according to the signal data, wherein,

when the signal data indicate opening, the electromagnetic valve is opened, the refrigeration system is controlled to refrigerate, and the valve body is opened after the refrigeration system refrigerates for t1 time. A

Further, when the signal data is only off, the valve body is closed and the electromagnetic valve is closed at the same time.

Further, after the valve body is opened after the electromagnetic valve is opened for t1 time, the method also comprises the following steps:

acquiring temperature data of a temperature sensor and controlling the opening angle of the valve body according to the temperature data, wherein,

when the temperature is lower than a first preset value, increasing the opening angle of the magnetic valve;

and when the temperature data exceeds a second preset value, reducing the opening angle of the magnetic valve.

Compared with the prior art, the refrigerator disclosed by the invention is provided with the drinking system of the container, the container of the drinking system is used for containing drinks, the drinking receiving port is arranged on the refrigerator body, the drinking receiving port is connected to the container through the drinking conveying channel, and meanwhile, when the drinks flow in the drinking conveying channel, the cold energy generated by the refrigerating system of the refrigerator can only cool the drinks in the drinking conveying channel, so that the refrigerating or heating efficiency is improved, and the drinks flowing out of the drinking receiving port have the required temperature.

Drawings

Fig. 1 is a schematic structural diagram of a refrigerator disclosed in an embodiment of the present invention;

FIG. 2 is a schematic view of an installation of a heat exchange unit on a refrigeration cycle loop in a refrigerator according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for operating a refrigerator according to an embodiment of the present invention;

description of reference numerals: 1-box body, 10-cooling cavity, 11-insulating layer, 12-evaporation chamber, 13-air channel, 14-air door, 15-cooling fan, 2-drinking system, 21-container, 211-containing cavity, 212-containing cavity inlet, 213-containing cavity outlet, 22-drinking connection, 23-drinking channel, 3-refrigeration system, 31-compressor, 32-evaporator, 33-bypass evaporation pipe, 34-electromagnetic valve, 35-condenser, 36-capillary tube, 4-valve body, 5-heat exchange unit, 51-cold supply channel, 52-heat exchange channel, 53-heat conducting piece, 6-door body, 61-distributor and 611-channel.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The embodiment of the invention comprises the following steps: as shown in fig. 1, a refrigerator is disclosed, which comprises a cabinet 1 and a drinking system 2 disposed on the cabinet 1, wherein the drinking system 2 has a container 21 for containing a beverage, a drinking spout 22 for drinking, and a drinking channel 23 for delivering the beverage from the container 21 to the drinking spout 22. The cold energy generated by the refrigerating system 3 of the refrigerator is used for cooling the drinks in the drink conveying channel 23 during the drink conveying process, so that the drinks are cooled efficiently, the taste of the drinks is improved, and more diversified demands are met. The beverage in this embodiment can be beverage, water, beer, red wine, etc.

The refrigeration system 3 of the refrigerator disclosed in this embodiment includes a refrigeration cycle refrigeration circuit including a compressor 31, a condenser 35, a capillary tube 36, and an evaporator 32 connected in this order, and a coolant flowing in the refrigeration cycle refrigeration circuit.

The box body 1 is provided with a cooling cavity 10, a heat insulation layer 11 positioned outside the cooling cavity 10, an evaporation cavity 12, an air duct 13 and an air door 14. The cooling cavity 10 can be a refrigerating compartment, the evaporation cavity 12 is used for placing an evaporator 32 of the refrigerating system 3, the evaporator 32 releases cold outwards and transmits the cold to a damper 14 through an air duct 13, and the damper 14 is used for communicating the air duct 13 with the cooling cavity 10 and controlling the quantity of the cold of the air duct 13 entering the cooling cavity 10. In the present embodiment, the evaporation chamber 12 is disposed on the upper side of the cooling chamber 10, so that the drinking system 2 disposed on the upper side of the box 1 can be conveniently cooled, and the integrated design of the refrigerator can be facilitated by the smaller occupied space of the drinking system 2 disposed on the upper side of the box 1.

Since the evaporation chamber 12 is disposed at an upper side of the cooling chamber 10, the air duct 13 is correspondingly disposed to extend in the vertical direction and the air duct 13 is disposed at a rear side of the cooling chamber 10. It should be noted that the front side herein refers to a side where the refrigerator door is located, and the rear side refers to a side opposite to the refrigerator door. The air duct 13 that arranges that the setting of above-mentioned structure can be better, wherein air door 14 sets up on the posterior lateral plate of cooling chamber 10, and air door 14 can be provided with a plurality ofly and arrange along vertical direction. The provision of a plurality of dampers 14 provides better cooling to the cooling chamber 10.

In order to enhance the efficiency of the transfer of cold energy between the evaporation chamber 12 and the air duct 13 in this embodiment, a cooling fan 15 is provided at the outlet of the evaporation chamber 12, i.e., at the position where the evaporation chamber 12 is connected to the air duct 13. The cooling fan 15 is used for transmitting the cooling energy generated by the evaporator 32 to the air duct 13. Of course, in other embodiments, the cooling fan 15 may be disposed at other positions of the air duct 13, and the cooling fan 15 is used for enhancing the convection of the cooling energy.

The drinking system 2 comprises a container 21 and a drinking channel 23 which are arranged at the top of the box body 1. The container 21 has a receiving cavity 211, a receiving cavity inlet 212 and a receiving cavity outlet 213, and both the receiving cavity inlet 212 and the receiving cavity outlet 213 are communicated with the receiving cavity 211. The accommodating cavity inlet 212 is used for adding beverage into the accommodating cavity 211, and the beverage flows out of the accommodating cavity 211 through the accommodating cavity outlet 213. The receiving chamber inlet 212 is disposed at the top of the container 21, and the receiving chamber outlet 213 is disposed at the bottom of the container 21. The accommodating cavity outlet 213 is communicated with the drink conveying channel 23, and the drink conveying channel 23 is provided with a drink inlet which penetrates through the heat insulation layer 11 to communicate the drink outlet outside the box body 1 and the accommodating cavity outlet 213. The beverage inlet is arranged at the top of the box body 1, and the beverage outlet is arranged at the front side of the box body 1. The container 21 of the drinking system 2 is arranged at the top of the box body 1, so that the space of the box body 1 can be better utilized, and the beverage inlet is arranged at the position opposite to the accommodating cavity outlet 213 at the top of the box body 1 for connecting the container 21 more conveniently.

The evaporator 32 has a cooling portion extending to the side of the drink delivery passage 23. The cold supply part is used for providing cold for cooling the drink in the drink conveying channel 23. The arrangement of the structure enables the cold supply part to refrigerate only the beverage flowing in the beverage conveying channel, and the machine set of the cold source required by refrigeration of the beverage in the flowing process can realize cooling of the beverage more efficiently and relatively less in cold supply.

The drink conveying channel 23 is also provided with a valve body 4, and the valve body 4 is used for controlling the opening or closing of the drink conveying channel so as to control the output or closing of drinks. The valve body 4 may be a solenoid valve or an electrically controlled ball valve in this embodiment. In order to more conveniently control the valve body 4, the refrigerator is further provided with a control unit and a drink taking switch, the drink taking switch and the valve body 4 are electrically connected to the control unit, and the control unit controls the valve body 4 after receiving a signal transmitted by the drink taking switch, so that the drink conveying channel is opened or closed. The valve body 4 is preferably arranged at the position of the outlet 213 of the accommodating cavity, and the valve body 4 is arranged between the positions of the outlet 213 of the accommodating cavity and the opposite position of the cooling part, so that whether the beverage flows or not can be controlled before the beverage is cooled by the cooling part, and the situation that the beverage is frozen in the beverage conveying channel due to the fact that the beverage is in contact with the cooling part for a long time is avoided.

As shown in fig. 2, in the present embodiment, the evaporator 32 is provided with an evaporation coil in which a coolant flows, and the cooling unit is a bypass evaporation tube 33 connected in parallel with the evaporation coil and through which the coolant flows. The bypass evaporator tubes 33 are connected in parallel to the refrigeration circuit and a portion of the coolant passes through the bypass evaporator tubes 33 to release refrigeration from the bypass evaporator tubes 33. In order to better control the flow condition of the coolant of the bypass evaporation tube 33, in this embodiment, the bypass evaporation tube is provided with an electromagnetic valve 34, and the electromagnetic valve 34 is opened when the cooling capacity of the cooling unit needs to be released by controlling the conduction or the closing of the bypass evaporation tube 33 through the electromagnetic valve 34, and the electromagnetic valve 34 is closed when the cooling capacity of the cooling unit does not need to be cooled. The arrangement of the electromagnetic valve 34 avoids the condition that cold energy is transmitted to the drink conveying channel all the time, and the electromagnetic valve 34 is closed when cold drinks are not needed, so that not only is the energy saved, but also the condition that the drink is frozen in the bypass evaporation pipe 33 to block the drink conveying channel 23 is avoided. The solenoid valve 34 may be a two-position three-way solenoid valve disposed on the evaporating coil, one end of the bypass evaporating pipe 33 is connected to an outlet of the two-position three-way solenoid valve, and the other end of the bypass evaporating pipe 33 is connected to the evaporating coil.

In order to better realize the transmission of cold energy from the cold supply part to the drink conveying channel 23, a heat exchange unit 5 is also arranged between the drink conveying channel 23 and the cold supply part, and the cold supply part transmits the cold energy to the drink conveying channel 23 through the heat exchange unit 5. The heat exchanging unit 5 includes a cooling passage 51, a heat exchanging passage 52, and a heat conducting member 53 disposed between the cooling passage and the heat exchanging passage, and the cooling portion is disposed in the cooling passage 51 or the cooling passage 51 is a part of the cooling portion. The bypass evaporator coil 33 can be inserted into the cold supply channel 51, and the cold is transmitted to the heat conducting member 53 through the bypass evaporator coil 33 and then transmitted to the heat exchange channel 52 through the heat conducting member 53. Preferably, the cooling tunnel 51 may be connected in series to the bypass-evaporation coil 33, in which case the cooling tunnel 51 is a part of the cooling unit, and the coolant is directly in the cooling tunnel 51, thereby more efficiently transferring the cooling energy.

Similarly, the drink conveying channel 23 penetrates through the heat exchange channel 52 or the heat exchange channel 52 is a part of the drink conveying channel 23. The drinking water conveying channel 23 can be a pipe fitting penetrating through the heat exchange channel 52, and at the moment, a layer of pipe fitting needs to be transmitted more in the transmission process of cold energy, so that in order to realize the transmission of the cold energy more efficiently, in this embodiment, the heat exchange channel 52 is connected in series on the drinking water conveying channel 23, the heat exchange channel 52 is a part of the drinking water conveying channel 23, and the drinking water conveying channel 23 further comprises an upper connecting pipe connecting the heat exchange channel 52 and the outlet 213 of the accommodating cavity and a lower connecting pipe connecting the heat exchange channel 52 and the outlet of the beverage.

Preferably, the heat exchange unit 5 has a body with a cylindrical structure, the cooling channel 51 and the heat exchange channel 52 extend along an axial direction of the body and are coaxially disposed, the cooling channel 51 covers the heat exchange channel 52, and the heat conducting member 53 is a wall plate separating the cooling channel 51 and the heat exchange channel 52. The 52 position of heat transfer passageway sets up the perforation at body central point, and the perforation both ends are connected with upper connecting pipe and lower connecting pipe respectively and are used for the flow of drink. The heat exchange channel covers the cold supply channel 51, so that the drink can be cooled more efficiently. And a cooling inlet and a cooling outlet are also arranged on the side wall of the body, and the cooling inlet and the cooling outlet are respectively communicated with the cooling channel 51.

In another embodiment, the cold supply portion transmits cold energy to the drink conveying channel 23 through a heat exchange unit 5, the heat exchange unit 5 is provided with a heat exchange channel, the heat exchange channel is a part of the drink conveying channel 23, and the cold supply portion has a cold supply pipe arranged in the heat exchange channel. In the embodiment, the beverage directly flows through the outer side of the cold supply pipe so as to realize the cold absorption from the cold supply pipe.

In another embodiment, the heat exchange unit 5 includes a housing covering the outside of the cooling portion, the drink conveying channel 23 includes a heat exchange tube disposed in the heat exchange unit, and a heat transfer medium is filled between the heat exchange tube and the cooling portion. The heat conduction medium can be air or other heat conduction members with better heat conduction performance.

The refrigerator is also provided with a door body 6, the drinking system further comprises a distributor 61 arranged on the door body 6, the distributor 61 is provided with a drinking receiving port 22 arranged on the outer side of the door body, an inlet arranged on the inner side of the door body and a channel 611 for communicating the drinking receiving port 22 with the inlet, and the beverage outlet is arranged on the front side of the refrigerator body and is opposite to the inlet. The beverage flowing out of the beverage delivery channel 23 enters the dispenser 61 and finally flows out through the beverage receiving port 22 on the dispenser 61.

Further, a temperature sensor is arranged on the channel 611 or at the beverage outlet, and the temperature sensor is electrically connected with the control unit. The temperature sensor is arranged between the heat exchange unit and the water receiving and drinking port 22, and can be arranged at the position of the water receiving and drinking port 22. The temperature sensor is used for detecting the temperature of the drink cooled by the heat exchange unit 5 and controlling the opening angle of the valve body 4 according to the temperature of the drink. When the temperature at the position of the drinking connection port 22 sensed by the temperature sensor is lower, the cold quantity of the cold supply part is enough at the moment, so that the opening angle of the valve body 4 can be increased. When the temperature sensor senses that the temperature at the position of the water receiving port 22 is high, the insufficient cold quantity of the cold supply part is reflected, and the opening angle of the valve body 4 is reduced.

As shown in fig. 3, another embodiment of the present invention further discloses a method for operating a refrigerator, comprising the steps of:

acquiring signal data of the drink taking switch and controlling the valve body 4 and the electromagnetic valve 34 according to the signal data, wherein,

when the signal data indicate opening, the electromagnetic valve 34 is opened, the refrigeration system 3 is controlled to refrigerate, and the valve body 4 is opened after the refrigeration system 3 refrigerates for t1 time.

In the present embodiment t₁The time is 30s, the electromagnetic valve 34 is opened in advance before the valve body 4 is opened, then whether the compressor of the refrigeration system 3 operates or not is judged, and the valve body 4 is opened after the compressor of the refrigeration system 3 operates for a certain time. The refrigeration system 3 is operated for a certain time in advance to carry out precooling, so that the drink which flows out from the drink conveying passage 23 at the beginning can be well cooled.

When the signal data is only off, the valve body is closed and the solenoid valve is closed at the same time.

After the valve body 4 is opened after the electromagnetic valve is opened for t1 time, the method also comprises the following steps:

acquiring temperature data of a temperature sensor and controlling the opening angle of the valve body 4 according to the temperature data, wherein,

when the temperature is lower than a first preset value, the opening angle of the valve body 4 is increased;

when the temperature data exceeds the second preset value, the opening angle of the valve body 4 is reduced.

In this embodiment, the first preset value is 8 ℃, the second preset value is 10 ℃, and the temperature data acquired by the temperature sensor should be within a preset interval between the first preset value and the second preset value, and the temperature data within the preset interval can be directly referred to. However, when the temperature data of the temperature sensor is higher than the preset interval, that is, the temperature data of the temperature sensor is higher than the second preset value, the insufficient supply of the cooling capacity may occur, and therefore, the opening angle of the valve body 4 needs to be reduced. When the cooling capacity of the temperature sensor is lower than the preset interval, i.e. lower than the first preset value, there may be a problem that the cooling capacity is supplied too much and the opening angle of the valve body 4 should be increased. Through the control of realization that above-mentioned structure set up can be better to valve body 4 to the temperature that makes the drink can be fine control in certain scope, avoids the drink to appear the condition of subcooling or overheated.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims

1. A refrigerator, characterized by comprising:

the box body is provided with a cooling cavity and a heat insulation layer positioned outside the cooling cavity;

2. The refrigerator according to claim 1, wherein: the beverage taking system also comprises a container arranged at the top of the box body, the container is provided with an accommodating cavity, an accommodating cavity inlet and an accommodating cavity outlet, and the accommodating cavity outlet is communicated with the beverage inlet; the drink inlet is arranged at the top of the box body.

3. The refrigerator according to claim 1, wherein: the box body is provided with an evaporation cavity arranged on the upper side of the cooling cavity, and the evaporator is arranged in the evaporation cavity.

4. The refrigerator according to claim 3, wherein: the box body is also provided with an air duct which is arranged at the rear side of the cooling cavity and communicated with the evaporation cavity, an air door which is arranged between the air duct and the cooling cavity and a cooling fan which is arranged between the evaporation cavity and the air duct and used for enhancing cold quantity transmission.

5. The refrigerator according to claim 1, wherein: the refrigerator is also provided with a door body, the drinking system further comprises a distributor arranged on the door body, the distributor is provided with a drinking receiving port arranged on the outer side of the door body, an inlet arranged on the inner side of the door body and a channel communicated with the drinking receiving port and the inlet, and the beverage outlet is arranged on the front side of the refrigerator body and is opposite to the inlet.

6. The refrigerator according to claim 5, wherein: and a temperature sensor is arranged on the channel or at the position of the drink outlet.

7. The refrigerator according to claim 1, wherein: the evaporator is provided with an evaporation coil, refrigerant flows in the evaporation coil, and the cold supply part is a bypass evaporation pipe which is connected with the evaporation coil in parallel and used for the flow of the refrigerant.

8. The refrigerator according to claim 7, wherein: and the bypass evaporation tube is provided with an electromagnetic valve.

9. The refrigerator according to claim 1, wherein: the cold supply part transmits cold energy to the drink conveying channel through the heat exchange unit; the heat exchange unit comprises a cold supply channel, a heat exchange channel and a heat conducting piece arranged between the cold supply channel and the heat exchange channel, wherein the cold supply part is arranged in the cold supply channel or the cold supply channel is a part of the cold supply part; the drink conveying channel penetrates through the heat exchange channel or the heat exchange channel is a part of the drink conveying channel.

10. The refrigerator according to claim 9, wherein: the cooling channel and the heat exchange channel are coaxially arranged, the heat exchange channel covers the cooling channel, and the heat conducting piece is a wall plate for separating the cooling channel from the heat exchange channel.

11. The refrigerator according to claim 9, wherein: the cold supply part transmits cold energy to the drink conveying channel through the heat exchange unit, the heat exchange unit is provided with a heat exchange channel, the heat exchange channel is a part of the drink conveying channel, and the cold supply part is provided with a cold supply pipe arranged in the heat exchange channel.

12. The refrigerator according to claim 9, wherein: the heat exchange unit comprises a shell covering the outer side of the cooling part, the drink conveying channel comprises a heat exchange tube arranged in the heat exchange unit, and a heat conduction medium is filled between the heat exchange tube and the cooling part.

13. The refrigerator according to any one of claims 1 to 12, wherein: the refrigerator also comprises a control unit and a drinking switch, wherein the control unit is electrically connected with the valve body and the drinking switch.

14. A manipulation method of the refrigerator according to claim 8, comprising the steps of:

when the signal data indicate opening, the electromagnetic valve is opened, the refrigeration system is controlled to refrigerate, and the valve body is opened after the refrigeration system refrigerates for t1 time.

15. The manipulation method of the refrigerator according to claim 14, wherein the valve body is closed and the solenoid valve is simultaneously closed when the signal data is only closed.

16. The operating method of a refrigerator according to claim 14, wherein the step of opening said valve body after the time t1 elapses after said solenoid is opened further comprises the steps of:

when the temperature is lower than a first preset value, the opening angle of the valve body is increased;

and when the temperature data exceeds a second preset value, reducing the opening angle of the valve body.