Cooling and heating device for kitchen

Abstract

The utility model relates to a cooling and heating device for a kitchen. The cooling and heating device comprises a shell, a compressor for driving the refrigerant; the evaporator is used for cooling air; the first heat exchanger is used for exchanging heat between the refrigerant passing through the evaporator and the cooling water; the second heat exchanger is used for heat exchange between the refrigerant and the cooling water after heat exchange of the first heat exchanger; the evaporator is connected with the compressor and the first heat exchanger, and the second heat exchanger is connected with the first heat exchanger and the compressor. The cooling and heating device for the kitchen has the following advantages that due to the design of the second heat exchanger, cooling water subjected to primary heat exchange can conduct heat exchange on a refrigerant subjected to primary heat exchange again, and the overall heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a heating and cooling device for kitchens. Background Technology

[0002] With the improvement of living standards, air conditioners are being used more and more widely in people's work and life. As a core component of air conditioners, the heat exchanger has a significant impact on the performance of the air conditioner. In the current technology, integrated air conditioners used in small spaces such as kitchens and bathrooms often use tap water for heat exchange. After one heat exchange, the water is discharged directly from the outlet. However, the temperature of the water after only one heat exchange is still low, and direct discharge wastes water resources. Utility Model Content

[0003] One objective of this application is to provide a kitchen heating and cooling device that can improve heat exchange efficiency and save water resources.

[0004] The technical solution adopted in this application is: a kitchen heating and cooling device, comprising:

[0005] case;

[0006] A compressor is used to drive the refrigerant;

[0007] An evaporator is used to cool air.

[0008] The first heat exchanger is used for heat exchange between the refrigerant and the cooling water;

[0009] The second heat exchanger is used for secondary heat exchange between refrigerant and cooling water;

[0010] The evaporator is connected to the compressor and the first heat exchanger respectively, and the second heat exchanger is connected to the first heat exchanger and the compressor respectively.

[0011] In some embodiments of this application, the bottom of the housing is provided with a first water inlet and a first water outlet; the first heat exchanger includes a first refrigerant inlet, a first refrigerant outlet, a first cooling water inlet and a first cooling water outlet, the first refrigerant inlet is connected to the evaporator, and the first cooling water inlet is connected to the first water inlet; the second heat exchanger includes a second refrigerant inlet, a second refrigerant outlet, a second cooling water inlet and a second cooling water outlet, the second refrigerant inlet is connected to the first refrigerant outlet, the second refrigerant outlet is connected to the compressor, the second cooling water inlet is connected to the first cooling water outlet, and the second cooling water outlet is connected to the first water outlet pipeline.

[0012] Furthermore, a drain tray is provided at the bottom of the evaporator; a drain pump is provided between the first outlet and the drain tray, with the inlet end of the drain pump connected to the drain tray and the outlet end of the drain pump connected to the first outlet.

[0013] Furthermore, a one-way valve is provided between the drainage pump and the first outlet, with the two ends of the one-way valve connected to the outlet end of the drainage pump and the first outlet, respectively.

[0014] Furthermore, the outlet of the drainage pump is connected to the first outlet via a second heat exchanger, and the outlet of the drainage pump is connected to the second cooling water inlet; the one-way valve is connected to the first outlet via the second heat exchanger, and the two ends of the one-way valve are respectively connected to the outlet of the drainage pump and the second cooling water inlet.

[0015] In some embodiments of this application, the housing includes an upper cavity and a lower cavity separated by a first partition. The upper cavity is provided with a fan and a first surface and a second surface arranged opposite to each other. An air inlet is provided on the first surface, and an exhaust outlet is provided on the second surface.

[0016] Furthermore, the compressor is located in the lower chamber; the evaporator is located in the upper chamber; the first heat exchanger is located in the upper chamber; and the second heat exchanger is located in the lower chamber.

[0017] Furthermore, a second partition is provided in the upper cavity, and a water distribution device is provided above the second partition; the water distribution device is used to divert the water inlet of the first heat exchanger and control the opening and closing of the diversion water path; the first heat exchanger includes at least two heat exchange chambers.

[0018] Furthermore, the two ends of the water distribution device are respectively connected to the first heat exchanger and the first water inlet; the water distribution device includes a first three-way pipe, a first solenoid valve, a second solenoid valve and a second three-way pipe, the two ends of the first solenoid valve are respectively connected to the first three-way pipe and the second three-way pipe, the two ends of the second solenoid valve are respectively connected to the first three-way pipe and the second three-way pipe, the remaining end of the first three-way pipe is connected to the first water inlet, and the remaining end of the second three-way pipe is connected to the first water outlet.

[0019] Furthermore, a temperature sensor is provided inside the heat exchange chamber, which is used to control the first solenoid valve and the second solenoid valve to regulate the flow rate.

[0020] In some embodiments of this application, the evaporator is provided with a heating device, which is disposed between the first heat exchanger and the evaporator.

[0021] The kitchen heating and cooling device obtained by this utility model has the following advantages: 1. The design of the second heat exchanger can exchange the cooling water that has undergone heat exchange once with the refrigerant that has undergone heat exchange once again, thereby improving the overall heat exchange effect, reducing water consumption, and saving water resources; 2. Condensate can also be used for heat exchange, further reducing water consumption; 3. The space layout is reasonable and the structure is compact. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model without the shell. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of this utility model without the shell. Figure 2 ;

[0025] Figure 4 This is a rear view of Embodiment 1 of this utility model;

[0026] Figure 5 This is a top view of Embodiment 1 of this utility model without the shell;

[0027] Figure 6 A schematic diagram of the fan structure in Embodiment 1 of this utility model;

[0028] Figure 7 A schematic diagram of the air duct seat in Embodiment 1 of this utility model;

[0029] Figure 8 A schematic diagram of the structure of the drainage tray in Embodiment 1 of this utility model;

[0030] Figure 9 A schematic diagram of the structure of the bracket in Embodiment 1 of this utility model;

[0031] Figure 10 A schematic diagram of the structure of Embodiment 1 of this utility model with the lid removed;

[0032] Figure 11 A schematic diagram of the structure of the first heat exchanger in Embodiment 1 of this utility model;

[0033] Figure 12 Structural diagram of Embodiment 2 of this utility model Figure 1 ;

[0034] Figure 13 Structural diagram of Embodiment 2 of this utility model Figure 2 .

[0035] In the diagram: 1. Shell; 11. First partition; 12. Upper cavity; 121. First surface; 122. Second surface; 123. Second partition; 13. Lower cavity; 131. Mounting column; 14. Air inlet; 15. Exhaust outlet; 16. First water inlet; 17. First water outlet; 2. Second heat exchanger; 21. Second refrigerant inlet; 22. Second refrigerant outlet; 23. Second cooling water inlet; 24. Second cooling water outlet; 3. Evaporator; 31. Heating device; 32. Drain tray; 321. Water guide groove; 322. Water guide pipe; 323. Water outlet; 324. Protrusion; 325. Limiting block; 4. First heat exchanger; 41. First refrigerant inlet; 42. 43. First refrigerant outlet; 44. First cooling water inlet; 5. First cooling water outlet; 6. Fan; 51. Fan wheel; 52. Air duct seat; 521. First air duct; 522. Adjustable fan blade; 523. Guide plate; 53. Motor; 6. Water distribution device; 61. First tee pipe; 62. First solenoid valve; 63. Second solenoid valve; 64. Second tee pipe; 7. Bracket; 71. Flat plate; 72. Support plate; 73. Fixing plate; 74. Protrusion; 8. Control panel; 81. Box cover; 82. Display screen; 83. Control components; 9. Drain pump; 91. Check valve; 92. T-connector; 104. Heat exchange chamber; 130. Temperature sensor; 200. Compressor. Detailed Implementation

[0036] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0037] Example 1:

[0038] This embodiment provides a kitchen heating and cooling device, such as... Figure 1 , Figure 2 As shown, it includes:

[0039] Casing 1;

[0040] Compressor 200 is used to drive the refrigerant;

[0041] Evaporator 3 is used to cool the air;

[0042] The first heat exchanger 4 is used for heat exchange between cooling water and refrigerant passing through evaporator 3;

[0043] The second heat exchanger 2 is used to exchange heat again between the refrigerant after heat exchange in the first heat exchanger 4 and the cooling water after heat exchange in the first heat exchanger 4.

[0044] The evaporator 3 is connected to the compressor 200 and the first heat exchanger 4 respectively, and the second heat exchanger 2 is connected to the first heat exchanger 4 and the compressor 200 respectively.

[0045] The design of the second heat exchanger 2 enables the cooling water that has undergone one heat exchange to exchange heat again with the refrigerant that has undergone one heat exchange, thereby improving the overall heat exchange efficiency.

[0046] For easy water intake and exhaust, such as Figure 4 As shown, the bottom of the housing 1 is provided with a first water inlet 16 and a first water outlet 17. The bottom water inlet and outlet are well concealed, the appearance is more beautiful, and the bottom water outlet makes the water outlet more complete, which makes it easier to drain the water in the air conditioning pipes.

[0047] like Figure 3 , Figure 5 As shown, the first heat exchanger 4 includes a first refrigerant inlet 41, a first refrigerant outlet 42, a first cooling water inlet 43, and a first cooling water outlet 44. The first refrigerant inlet 41 is connected to the evaporator 3, and the first cooling water inlet 43 is connected to the first water inlet 16. The second heat exchanger 2 includes a second refrigerant inlet 21, a second refrigerant outlet 22, a second cooling water inlet 23, and a second cooling water outlet 24. The second refrigerant inlet 21 is connected to the first refrigerant outlet 42, the second refrigerant outlet 22 is connected to the compressor 200, the second cooling water inlet 23 is connected to the first cooling water outlet 44, and the second cooling water outlet 24 is connected to the first water outlet 17 via a pipeline. The other end of the compressor 200 is connected to the evaporator 3.

[0048] The evaporator 3 has a drain tray 32 at its bottom; a drain pump 9 is installed between the first outlet 17 and the drain tray 32. The inlet of the drain pump 9 is connected to the drain tray 32 via a pipeline, and the outlet of the drain pump 9 is connected to the first outlet 17 via a pipeline. The drain pump 9 is designed to extract the water accumulated in the drain tray 32 through the pipeline and then discharge it through the first outlet 17. It has high drainage efficiency, is not affected by the air pressure at the first outlet 17, and can stably discharge the water accumulated on the drain tray 32. In this embodiment, a T-joint 92 is provided between the first outlet 17 and the outlet of the drain pump 9, and the remaining end of the T-joint 92 is connected to the second cooling water outlet 24.

[0049] To prevent backflow, a one-way valve 91 is provided between the drain pump 9 and the first outlet 17. The two ends of the one-way valve 91 are connected to the outlet end of the drain pump 9 and the first outlet 17, respectively. In this embodiment, the drain pump 9 is located in the lower chamber 13. The design of the one-way valve 91 prevents backflow of water in the pipeline, ensuring the stable operation of the drain pump 9, and also prevents water from overflowing from the drain tray 32. In this embodiment, the one-way valve 91 is located between the tee connector 92 and the drain pump 9.

[0050] For ease of installation, the housing 1 includes an upper cavity 12 and a lower cavity 13 separated by a first partition 11. The upper cavity 12 is equipped with a fan 5 and a first surface 121 and a second surface 122 arranged opposite to each other. The first surface 121 is provided with an air inlet 14, and the second surface 122 is provided with an exhaust outlet 15. The design of the upper cavity 12 and the lower cavity 13 facilitates the separation of internal components and reduces the mutual interference between components in the upper cavity 12 and components in the lower cavity 13.

[0051] To minimize mutual interference between components, the compressor 200 is located in the lower chamber 13; the evaporator 3 is located in the upper chamber 12; the first heat exchanger 4 is located in the upper chamber 12; and the second heat exchanger 2 is located in the lower chamber 13. Placing the compressor 200 in the lower chamber 13 minimizes the impact of its operation on the interior of the upper chamber 12, ensuring stable operation of the air conditioner. Furthermore, the compressor 200's heavy weight and its location in the lower chamber 13 lower the center of gravity, resulting in greater overall stability and reducing the risk of tipping over.

[0052] To ensure reliable pipeline separation, a second partition 123 is provided inside the upper cavity 12, and a water distribution device 6 is provided above the second partition 123. The evaporator 3 is located below the second partition 123. The second partition 123 is used to isolate the water distribution device 6 and arrange the complex pipelines above the second partition 123, which facilitates the arrangement and storage of the pipelines and makes maintenance convenient. The water distribution device 6 is used to divert the inlet water of the first heat exchanger 4 and control the opening and closing of the diversion water path.

[0053] like Figure 11 As shown, the first heat exchanger 4 includes at least two heat exchange chambers 104. The first heat exchanger 4 uses two heat exchange chambers 104, which has high heat exchange efficiency. Moreover, it is placed in the upper chamber 12, which reduces the impact of the working heat of the compressor 200 on the first heat exchanger 4. The first heat exchanger 4 has better working stability and higher heat exchange efficiency.

[0054] The two ends of the water distribution device 6 are connected to the first heat exchanger 4 and the first water inlet 16, respectively. The water distribution device 6 includes a first three-way pipe 61, a first solenoid valve 62, a second solenoid valve 63, and a second three-way pipe 64. The two ends of the first solenoid valve 62 are connected to the first three-way pipe 61 and the second three-way pipe 64, respectively. The two ends of the second solenoid valve 63 are connected to the first three-way pipe 61 and the second three-way pipe 64, respectively. The remaining end of the first three-way pipe 61 is connected to the first water inlet 16, and the remaining end of the second three-way pipe 64 is connected to the first water outlet 17. The first solenoid valve 62 and the second solenoid valve 63 can control the two water paths, which facilitates the adjustment of the flow rate.

[0055] The heat exchange chamber 104 is equipped with a temperature sensor 130, which is used to control the first solenoid valve 62 and the second solenoid valve 63 to regulate the flow rate.

[0056] To ensure the reliability of fan 5, such as Figure 6 As shown, the fan 5 includes a fan wheel 51, a duct seat 52, and a motor 53. The fan wheel 51 is mounted on the duct seat 52 and rotatably connected to it. The motor 53 is connected to the fan wheel 51. The duct seat 52 is mounted on the exhaust port 15 and fixedly connected to the second surface 122. The duct seat 52 is used to guide the gas flow, and the motor 53 is used to drive the fan wheel 51 to rotate. The fan wheel 51 drives the internal gas to flow along the duct seat 52.

[0057] For reliable airflow, such as Figure 7 As shown, the air duct seat 52 includes a first air duct 521 and an adjustable fan blade 522, which is arranged on the exhaust port 15. The air inlet end of the first air duct 521 is perpendicular to the air inlet 14, and the air outlet end of the first air duct 521 is perpendicular to the exhaust port 15. The air inlet end of the first air duct 521 is provided with an arc-shaped guide plate 523, one arc-shaped end of the guide plate 523 is smoothly connected to the first air duct 521, and the other end faces the air inlet 14. The first air duct 521 is used to guide the gas flow, and the adjustable fan blade 522 is used to adjust the direction of the air outlet. The air inlet end of the first air duct 521 is perpendicular to the air inlet 14, which facilitates the side gas to enter the first air duct 521. The air outlet end of the first air duct 521 is perpendicular to the exhaust port 15, which facilitates the gas to be blown out from the exhaust port 15. The guide plate 523 is used to guide the gas from the air inlet 14, which is perpendicular to the air duct seat 52, to the first air duct 521.

[0058] For reliable drainage tray 32, such as Figure 8 As shown, the drain tray 32 includes a water guide groove 321 and a water guide pipe 322. The water guide pipe 322 is located below the water guide groove 321, which is fitted onto the bottom of the evaporator 3. The water guide pipe 322 has a water outlet 323 that communicates with the water guide groove 321. The bottom surface of the water guide groove 321 has a protrusion 324. The side of the water guide groove 321 has a limiting block 325 that protrudes towards the evaporator 3. The water guide pipe 322 is connected to the inlet pipe of the drain pump 9. The drain tray 32 is fixedly connected to the first partition 11. The water guide groove 321 is used to collect condensate, and the water guide pipe 322 is used to discharge condensate. The water guide groove 321 is located at the bottom of the evaporator 3, which facilitates the dripping of condensate from the evaporator 3 into the water. The protrusion 324 is used to limit the minimum height of the evaporator 3 and prevent the evaporator 3 from contacting the bottom surface of the water guide groove 321. The limiting block 325 is used to contact the evaporator 3 to limit the movement of the bottom of the evaporator 3. The upper end of the evaporator 3 is fixedly connected to the second partition 123 to ensure that the evaporator 3 is fixedly and reliably.

[0059] For ease of use, such as Figure 10As shown, it also includes a control panel 8, which is mounted on the second surface 122. The control panel 8 includes a cover 81, a display screen 82, and control components 83. The cover 81 protects the display screen 82 and control components 83. The compressor 200, evaporator 3, first heat exchanger 4, fan 5, first solenoid valve 62, second solenoid valve 63, and temperature sensor 130 are all electrically connected to the control panel 8. The display screen 82 displays the operating status of the air conditioner; the control components 83 are buttons for convenient adjustment of temperature and mode, etc.

[0060] For reliable installation of compressor 200, such as Figure 9 As shown, the lower cavity 13 has at least four mounting posts 131 at its bottom. The compressor 200 is connected to the mounting posts 131 via at least two opposing brackets 7. The brackets 7 include a flat plate 71, a support plate 72 that fits against the bottom surface of the compressor 200, and symmetrically arranged fixing plates 73. The fixing plates 73 are positioned above the flat plate 71 and are connected to the flat plate 71 by bending. The fixing plates 73 are connected to the mounting posts 131. The support plates 72 are arranged obliquely towards the compressor 200 and are positioned above the flat plate 71. The support plates 72 and the flat plate 71 are connected by an arc transition. The support plates 72 abut against the bottom surface of the compressor 200. The support plates 72 are provided with protrusions 74. The bracket 7 has multiple bends, resulting in high overall structural strength; the support plate 72 fits well with the compressor 200, facilitating the placement of the compressor 200; the protrusions 74 are used to increase friction on the compressor 200 and prevent the compressor 200 from sliding; the working vibration of the compressor 200 is transmitted to the housing 1 after passing through the bracket 7, reducing noise and vibration and improving the comfort of air conditioning use.

[0061] To achieve the heating function, the evaporator 3 is equipped with a heating device 31, which heats the airflow entering from the air inlet 14 to blow hot air, making it convenient to use in cold weather and improving practicality. The heating device 31 is located between the first heat exchanger 4 and the evaporator 3, so that the heated airflow enters the first air duct 521 from the side, maintaining a certain distance from the fan 5, rather than blowing the fan 5 directly. This reduces the impact of the heating device 31 on the fan 5, and the high temperature of the heating device 31, combined with its distance from the fan 5, improves safety. The heating device 31 is arranged parallel to the evaporator 3, reducing the occupation of longitudinal space, improving space utilization, and achieving miniaturization of the air conditioner. The heating device 31 is connected and fixed to the evaporator 3. In this embodiment, the heating device 31 is a heating resistor.

[0062] For a compact internal structure, the evaporator 3 is arranged parallel to the first surface 121; the first heat exchanger 4 is arranged parallel to the second surface 122; the fan 5 is arranged between the exhaust port 15 and the evaporator 3; the exhaust port 15, the fan 5, the evaporator 3 and the air inlet 14 are arranged sequentially between part of the second surface 122 and the first surface 121, and the first heat exchanger 4, the evaporator 3 and the air inlet 14 are arranged sequentially between another part of the second surface 122 and the first surface 121. The evaporator 3 is arranged parallel to the first surface 121, which increases the contact area between the evaporator 3 and the air inlet 14. The first heat exchanger 4 is arranged parallel to the second surface 122, which reduces the occupation of longitudinal space. The fan 5 is arranged between the exhaust port 15 and the evaporator 3. The line connecting the first heat exchanger 4 and the fan 5 is arranged parallel to the evaporator 3, which increases the space utilization rate. At the same time, some of the air entering through the air inlet 14 passes through the first heat exchanger 4 when it enters the exhaust port 15 after passing through the evaporator 3, which can further improve the heat exchange efficiency of the first heat exchanger 4.

[0063] When used for cooling, the compressor 200 and fan 5 are started. The compressor 200 causes the refrigerant in the evaporator 3 to flow, and the fan 5 draws in gas through the inlet 14. After passing through the evaporator 3 and being cooled, the gas is blown out through the outlet 15. At the same time, water enters through the first inlet 16 and flows through the water distribution device 6 to the first heat exchanger 4 to exchange heat with the refrigerant on the evaporator 3. The water then enters the second heat exchanger 2 to exchange heat with the refrigerant exiting the first heat exchanger 4. The water is then discharged through the first outlet 17. When used for heating, the heating device 31 and fan 5 are started. The fan 5 draws in gas through the inlet 14, heats it through the heating device 31, and then blows it out through the outlet 15.

[0064] Example 2:

[0065] This embodiment provides a kitchen heating and cooling device, which aims to improve heat exchange efficiency, such as... Figure 12 , Figure 13 As shown, except for the features described in Embodiment 1, the outlet end of the drain pump 9 is connected to the first outlet 17 via the second heat exchanger 2, and the outlet end of the drain pump 9 is connected to the second cooling water inlet 23. The drain pump 9 is used to send the condensate in the drain tray 32 to the second heat exchanger 2. The condensate has a low temperature, which can further improve the heat exchange efficiency, while reducing the demand for tap water and saving water resources.

[0066] A one-way valve 91 is connected to the first outlet 17 via the second heat exchanger 2. Both ends of the one-way valve 91 are connected to the outlet of the drain pump 9 and the second cooling water inlet 23, respectively. In this embodiment, a three-way connector 92 is provided between the one-way valve 91 and the second cooling water inlet 23, with the remaining end of the three-way connector 92 connected to the first cooling water outlet 44. The one-way valve 91 prevents water flowing from the first cooling water outlet 44 from flowing towards the drain pump 9.

[0067] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A kitchen heating and cooling device, characterized in that, include: Shell (1); Compressor (200), used to drive refrigerant; Evaporator (3) is used to cool the air; The first heat exchanger (4) is used for heat exchange between refrigerant and cooling water; The second heat exchanger (2) is used for secondary heat exchange between refrigerant and cooling water; The evaporator (3) is connected to the compressor (200) and the first heat exchanger (4) respectively, and the second heat exchanger (2) is connected to the first heat exchanger (4) and the compressor (200) respectively.

2. A kitchen heating and cooling device according to claim 1, characterized in that: The bottom of the housing (1) is provided with a first water inlet (16) and a first water outlet (17); the first heat exchanger (4) includes a first refrigerant inlet (41), a first refrigerant outlet (42), a first cooling water inlet (43) and a first cooling water outlet (44), the first refrigerant inlet (41) is connected to the evaporator (3), and the first cooling water inlet (43) is connected to the first water inlet (16); the second heat exchanger (2) includes a second refrigerant inlet (21), a second refrigerant outlet (22), a second cooling water inlet (23) and a second cooling water outlet (24), the second refrigerant inlet (21) is connected to the first refrigerant outlet (42), the second refrigerant outlet (22) is connected to the compressor (200), the second cooling water inlet (23) is connected to the first cooling water outlet (44), and the second cooling water outlet (24) is connected to the first water outlet (17) via a pipeline.

3. A kitchen heating and cooling device according to claim 2, characterized in that: The evaporator (3) is provided with a drain tray (32) at the bottom; a drain pump (9) is provided between the first outlet (17) and the drain tray (32), the inlet end of the drain pump (9) is connected to the drain tray (32), and the outlet end of the drain pump (9) is connected to the first outlet (17).

4. A kitchen heating and cooling device according to claim 3, characterized in that: A one-way valve (91) is provided between the drainage pump (9) and the first outlet (17), and the two ends of the one-way valve (91) are respectively connected to the outlet end of the drainage pump (9) and the first outlet (17).

5. A kitchen heating and cooling device according to claim 4, characterized in that: The outlet of the drain pump (9) is connected to the first outlet (17) through the second heat exchanger (2), and the outlet of the drain pump (9) is connected to the second cooling water inlet (23); the one-way valve (91) is connected to the first outlet (17) through the second heat exchanger (2), and the two ends of the one-way valve (91) are respectively connected to the outlet of the drain pump (9) and the second cooling water inlet (23).

6. A kitchen heating and cooling device according to claim 2, characterized in that: The housing (1) includes an upper cavity (12) and a lower cavity (13) separated by a first partition (11). The upper cavity (12) is provided with a fan (5) and a first surface (121) and a second surface (122) arranged opposite to each other. The first surface (121) is provided with an air inlet (14) and the second surface (122) is provided with an exhaust outlet (15).

7. A kitchen heating and cooling device according to claim 6, characterized in that: The compressor (200) is located in the lower chamber (13); the evaporator (3) is located in the upper chamber (12); the first heat exchanger (4) is located in the upper chamber (12); and the second heat exchanger (2) is located in the lower chamber (13).

8. A kitchen heating and cooling device according to claim 6, characterized in that: The upper cavity (12) is provided with a second partition (123), and a water distribution device (6) is provided above the second partition (123); the water distribution device (6) is used to divert the water inlet of the first heat exchanger (4) and control the opening and closing of the diversion water path; the first heat exchanger (4) includes at least two heat exchange chambers (104).

9. A kitchen heating and cooling device according to claim 8, characterized in that: The two ends of the water distribution device (6) are connected to the first heat exchanger (4) and the first water inlet (16) respectively. The water distribution device (6) includes a first three-way pipe (61), a first solenoid valve (62), a second solenoid valve (63) and a second three-way pipe (64). The two ends of the first solenoid valve (62) are connected to the first three-way pipe (61) and the second three-way pipe (64) respectively. The two ends of the second solenoid valve (63) are connected to the first three-way pipe (61) and the second three-way pipe (64) respectively. The remaining end of the first three-way pipe (61) is connected to the first water inlet (16) and the remaining end of the second three-way pipe (64) is connected to the first water outlet (17).

10. A kitchen heating and cooling device according to claim 9, characterized in that: The heat exchange chamber (104) is equipped with a temperature sensor (130), which is used to control the first solenoid valve (62) and the second solenoid valve (63) to regulate the flow rate.

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