Kitchen air conditioning system

Abstract

A kitchen air conditioning system includes an air conditioning component and a fume extraction component, a throttling component is installed on the refrigerant pipeline between a first heat exchanger and a second heat exchanger, a first end of the refrigerant branch is connected to the refrigerant pipeline between the second heat exchanger and a compressor, a second end of the refrigerant branch is connected to the refrigerant pipeline between the first heat exchanger and the throttling component, a third heat exchanger is installed on the refrigerant branch, and a stop valve is installed on the refrigerant branch between the third heat exchanger and the compressor. The kitchen air conditioning system is provided with a third heat exchanger on the refrigerant branch. When the stop valve on the refrigerant branch is opened, a part of the high-temperature and high-pressure gas refrigerant from the compressor can flow through the third heat exchanger, so that the air temperature is increased to a certain extent before entering the first heat exchanger, thereby achieving the first heat exchanger without frosting or delaying the frosting time.

Description

Technical Field

[0001] The invention relates to a kitchen air conditioning system. Background Art

[0002] Existing air conditioning systems generally have outdoor air inlets and indoor air outlets. Outdoor fresh air enters the air conditioner through the outdoor air inlet and is replenished to the room from the indoor air outlet after heat exchange in the heat exchanger. That is, the air conditioner works in the fresh air mode. A common problem with existing air conditioning systems is that when the indoor temperature reaches the set temperature, the fresh air fan must be shut down, which will cause incomplete evaporation of the refrigerant in the evaporator and the compressor is at risk of liquid compression. If the compressor does not stop, it may cause component damage and make the system unable to work properly. In addition, in the heating mode, the evaporator is prone to frost, which affects the refrigeration performance. In summary, further improvements need to be made to the existing air conditioning systems. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a kitchen air conditioning system which can realize bypass defrosting or delayed frosting without shutting down the system in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: the kitchen air conditioning system includes an air conditioning component and a fume extraction component, the air conditioning component includes a compressor, a first heat exchanger and a second heat exchanger, the compressor, the first heat exchanger and the second heat exchanger are connected through a refrigerant pipeline, a four-way valve is installed on the refrigerant pipeline, and a throttling component is installed on the refrigerant pipeline between the first heat exchanger and the second heat exchanger. It is characterized in that: it also includes a refrigerant branch, the first end of the refrigerant branch is connected to the refrigerant pipeline between the second heat exchanger and the compressor, the second end of the refrigerant branch is connected to the refrigerant pipeline between the first heat exchanger and the throttling component, a third heat exchanger is installed on the refrigerant branch, and a stop valve is installed on the refrigerant branch between the third heat exchanger and the compressor.

[0005] Preferably, the first heat exchanger and the third heat exchanger are arranged in the exhaust channel of the oil fume suction assembly. In this way, in the cooling mode, the residual heat of the oil fume can take away the heat of the first heat exchanger and the third heat exchanger, which is conducive to improving the energy efficiency of the air conditioner.

[0006] As a preferred solution, the first heat exchanger and the third heat exchanger are combined into an integrated structure.

[0007] As another preferred solution, the first heat exchanger and the third heat exchanger are split structures.

[0008] In order to discharge the condensed water generated by the heat exchanger in the flue, a condensed water collecting device and a spraying device are installed in the smoke exhaust channel. The condensed water collecting device is used to collect the condensed water generated by the first heat exchanger and the third heat exchanger, and the spraying device is used to spray the condensed water collected by the condensed water collecting device into the smoke exhaust channel.

[0009] Further preferably, the condensed water collecting device includes a water receiving pan and a liquid guiding pipe, the water receiving pan is arranged below the first heat exchanger and the third heat exchanger, and the liquid guiding pipe is connected between the water receiving pan and the spraying device.

[0010] In order to prevent the oil smoke from polluting the heat exchanger in the flue, an oil smoke purification device is installed in the exhaust passage, and the oil smoke purification device is arranged at the front end of the first heat exchanger and the third heat exchanger.

[0011] In order to simplify the system structure, the compressor is integrated on the oil fume suction component.

[0012] In order to provide fresh air to the kitchen, an indoor unit is installed in the kitchen, the second heat exchanger is installed in the indoor unit, and the indoor unit is provided with an air inlet and an air outlet, the air inlet is connected to the outside, and the air outlet is connected to the kitchen.

[0013] In order to make full use of the kitchen corner space, the internal machine is installed in the corner of the kitchen upper cabinet. In addition, the compressor can also be installed in the corner of the kitchen upper cabinet.

[0014] Compared with the prior art, the advantages of the present invention are: the kitchen air conditioning system arranges a third heat exchanger in the refrigerant branch. When the stop valve on the refrigerant branch is opened, a part of the high-temperature and high-pressure gas refrigerant from the compressor can flow through the third heat exchanger, so that the air temperature is increased to a certain extent before entering the first heat exchanger, thereby achieving the goal of not frosting the first heat exchanger or delaying the frosting time, which is beneficial to improving the service life of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the system structure of Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic structural diagram of an air conditioning assembly according to Embodiment 1 of the present invention;

[0017] Figure 3 This is a schematic diagram of the system structure of Embodiment 2 of the present invention;

[0018] Figure 4 It is a structural schematic diagram of an air conditioning assembly according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings.

[0020] Embodiment 1:

[0021] like Figure 1 and Figure 2 As shown, the kitchen air conditioning system of this embodiment includes an air conditioning component 1 and a fume extraction component 2. The air conditioning component 1 specifically includes a compressor 11, a first heat exchanger 12 and a second heat exchanger 13. The compressor 11, the first heat exchanger 12 and the second heat exchanger 13 are connected through a refrigerant pipeline 14. A four-way valve 15 is installed on the refrigerant pipeline 14. A throttling component 16 is installed on the refrigerant pipeline 14 between the first heat exchanger 12 and the second heat exchanger 13. The throttling component 16 usually adopts a throttling valve. During operation, the air conditioning working mode is switched by switching the four-way valve 15. The working principle of the air conditioning component 1 is the same as that of the existing air conditioner, and will not be described in detail here.

[0022] The air conditioning adjustment component 1 also includes a refrigerant branch 17, a first end of the refrigerant branch 17 is connected to the refrigerant pipeline 14 between the second heat exchanger 13 and the compressor 11, a second end of the refrigerant branch 17 is connected to the refrigerant pipeline 14 between the first heat exchanger 12 and the throttling component 16, a third heat exchanger 18 is installed on the refrigerant branch 17, and a stop valve 19 is installed on the refrigerant branch 17 between the third heat exchanger 18 and the compressor 11.

[0023] In this embodiment, the first heat exchanger 12 and the third heat exchanger 18 are combined into an integrated structure, and the first heat exchanger 12 and the third heat exchanger 18 are arranged in the exhaust passage 21 of the oil fume suction assembly 2. In order to prevent the oil fume from contaminating the first heat exchanger 12 and the third heat exchanger 18, an oil fume purification device 5 is installed in the exhaust passage 21, and the oil fume purification device 5 is arranged at the front end of the first heat exchanger 12 and the third heat exchanger 18. The oil fume purification device 5 usually adopts a front-end electrostatic purification device, and the oil fume can be effectively purified before entering the first heat exchanger 12 and the third heat exchanger 18.

[0024] In the heating mode, the first heat exchanger 12 and the third heat exchanger 18 in the oil fume channel will produce condensed water. In this embodiment, a condensed water collection device 3 and a spray device 4 are installed in the exhaust channel 21. The condensed water collection device 3 has a water receiving tray 31 and a liquid guide pipe 32. The water receiving tray 31 is arranged below the first heat exchanger 12 and the third heat exchanger 18. The liquid guide pipe 32 is connected between the water receiving tray 31 and the spray device 4. The condensed water collection device 3 is used to collect the condensed water generated by the first heat exchanger 12 and the third heat exchanger 18. The spray device 4 is used to spray the condensed water collected by the condensed water collection device 3 into the exhaust channel 21 and discharged together with the oil fume.

[0025] The compressor 11 of this embodiment is integrated on the range fumes suction assembly 2, and is installed on the air conditioner indoor unit 6 in the corner of the kitchen upper cabinet 7. The second heat exchanger 13 is installed in the indoor unit 6. The indoor unit 6 is provided with an air inlet 61 and an air outlet 62. The air inlet 61 is connected to the outdoors, and the air outlet 62 is close to the second heat exchanger 13 and is connected to the kitchen room.

[0026] In the cooling mode, the first heat exchanger 12 is a condenser, the second heat exchanger 13 is an evaporator, the stop valve 19 is closed, and cold air is blown out from the air outlet 62 .

[0027] In the heating mode, the first heat exchanger 12 and the third heat exchanger 18 are evaporators, and the second heat exchanger 13 is a condenser. When the range hood 1 starts to operate, the air temperature entering the first heat exchanger 12 is low and the relative humidity is high. Water is easy to condense and frost on the first heat exchanger 12. At this time, the stop valve 19 is opened, and the refrigerant branch 17 is used for bypass. A part of the high-temperature and high-pressure gas refrigerant flows through the third heat exchanger 18. At the same time, after being throttled by the throttling component 16, the low-temperature and low-pressure liquid refrigerant flows to the first heat exchanger 12. In this way, the high-temperature and high-pressure gas refrigerant flowing through the third heat exchanger 18 is mixed with the low-temperature and low-pressure liquid refrigerant and flows into the first heat exchanger 12. The temperature of the mixed refrigerant is increased. In this way, the air temperature is increased to a certain extent before entering the first heat exchanger 12, so that the first heat exchanger 12 is not frosted or the frosting time is delayed.

[0028] Embodiment 2:

[0029] like Figure 3 and Figure 4 As shown, the first heat exchanger 12 and the third heat exchanger 18 of this embodiment are split structures. The remaining structure and working principle of this embodiment are the same as those of the first embodiment, and will not be described in detail here.

Claims

1. A kitchen air conditioning system, comprising an air conditioning component (1) and a fume extraction component (2), wherein the air conditioning component (1) comprises a compressor (11), a first heat exchanger (12) and a second heat exchanger (13), wherein the compressor (11), the first heat exchanger (12) and the second heat exchanger (13) are connected via a refrigerant pipeline (14), a four-way valve (15) is installed on the refrigerant pipeline (14), and a throttling component (16) is installed on the refrigerant pipeline (14) between the first heat exchanger (12) and the second heat exchanger (13), characterized in that: It also includes a refrigerant branch (17), a first end of the refrigerant branch (17) is connected to the refrigerant pipeline (14) between the second heat exchanger (13) and the compressor (11), and a second end of the refrigerant branch (17) is connected to the refrigerant pipeline (14) between the first heat exchanger (12) and the throttling component (16). A third heat exchanger (18) is installed on the refrigerant branch (17), and a stop valve (19) is installed on the refrigerant branch (17) between the third heat exchanger (18) and the compressor (11). The first heat exchanger (12) and the third heat exchanger (18) are arranged in the exhaust channel (21) of the oil fume suction component (2), the compressor (11) is integrated in the oil fume suction component (2), and the throttling component (16) is a throttle valve.

2. The kitchen air conditioning system according to claim 1, characterized in that: The first heat exchanger (12) and the third heat exchanger (18) are combined into an integrated structure.

3. The kitchen air conditioning system according to claim 1, characterized in that: The first heat exchanger (12) and the third heat exchanger (18) are separate structures.

4. The kitchen air conditioning system according to claim 1, characterized in that: A condensate collecting device (3) and a spraying device (4) are installed in the smoke exhaust channel (21); the condensate collecting device (3) is used to collect condensate generated by the first heat exchanger (12) and the third heat exchanger (18); and the spraying device (4) is used to spray the condensate collected by the condensate collecting device (3) into the smoke exhaust channel (21).

5. The kitchen air conditioning system according to claim 4, characterized in that: The condensed water collecting device (3) comprises a water receiving tray (31) and a liquid guiding pipe (32); the water receiving tray (31) is arranged below the first heat exchanger (12) and the third heat exchanger (18); and the liquid guiding pipe (32) is connected between the water receiving tray (31) and the spraying device (4).

6. The kitchen air conditioning system according to claim 1, characterized in that: An oil fume purification device (5) is installed in the exhaust passage (21), and the oil fume purification device (5) is arranged at the front ends of the first heat exchanger (12) and the third heat exchanger (18).

7. The kitchen air conditioning system according to any one of claims 1 to 6, characterized in that: An indoor unit (6) is installed in the kitchen, and the second heat exchanger (13) is installed in the indoor unit (6). The indoor unit (6) is provided with an air inlet (61) and an air outlet (62), wherein the air inlet (61) is connected to the outside, and the air outlet (62) is connected to the kitchen.

8. The kitchen air conditioning system according to claim 7, characterized in that: The indoor unit (6) is installed in a corner of the kitchen upper cabinet (7).

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