Kitchen air conditioning system

Abstract

A kitchen air conditioning system comprises an air conditioning module and an oil smoke suction module, an outdoor air inlet of the air conditioning module is communicated with the outside, an indoor air inlet of the air conditioning module is communicated with the inside of a kitchen, a first air valve is installed at the outdoor air inlet, and a second air valve is installed at the indoor air inlet. In the first circulation mode, the first air valve is closed, the second air valve is opened, in the outer circulation mode, the first air valve is opened, the second air valve is closed, the cleaning device collects condensate water condensed on the surface of the evaporator, and the condensate water is used for cleaning the first air valve. According to the kitchen air conditioning system, by controlling opening and closing of the first air valve and the second air valve, switching between the inner circulation fan mode and the fresh air conditioning mode is achieved, in the outer circulation mode, condensate water can be used for cleaning the first air valve, on one hand, effective utilization of the condensate water is achieved, a condensate water discharging structure does not need to be additionally arranged, and the cost is reduced. On the other hand, cleaner fresh air can be blown out through the indoor air outlet, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to an air conditioning system, and more particularly to a kitchen air conditioning system. Background Technology

[0002] The kitchen is the main place for cooking, and the quality of the kitchen air environment directly affects the cook's mood, especially in the hot summer when the stuffy environment causes great discomfort. Therefore, various kitchen air conditioners have been invented to cool the kitchen air. Similar to conventional air conditioners, kitchen air conditioners also include a compressor, condenser, and evaporator. When the air conditioner is working, the condenser generates heat, which needs to be dissipated. Currently, the cooling air from existing kitchen air conditioners is discharged through a shared exhaust duct. This can lead to two problems: firstly, it reduces the effective airflow of the range hood, affecting its smoke extraction efficiency; secondly, the condenser is located in the smoke extraction duct, meaning all the smoke passes through it, risking contamination of the condenser with grease. For example, the range hood disclosed in Chinese utility model patent No. 201620118025.6 (authorization announcement No. CN 205481215U) has the condenser located inside the exhaust chamber. Although the condenser can be cooled by the airflow of oil fumes, it is easy for the condenser to get dirty over time, which reduces the heat dissipation efficiency. Moreover, a purification device usually needs to be installed at the front end of the condenser. After the purification device is installed, it is easy to cause the exhaust channel to be obstructed, the noise to be high, and the purification device is expensive, has a high failure rate, and requires regular maintenance. In addition, when operating in cooling mode, condensate will form on the surface of the evaporator, requiring effective treatment. Currently, condensate is generally used to cool the condenser, as disclosed in Chinese Utility Model Patent No. CN202122797163.5 (Authorization Announcement No. CN 216521873 U). This range hood has a compressor and a fume extraction fan inside its casing. A smoke exhaust channel is formed downstream of the fume extraction fan. An air conditioning indoor unit is installed on the casing. The air conditioning indoor unit includes an indoor unit casing and an evaporator located inside the indoor unit casing. A condenser is installed in the smoke exhaust channel, and a water collection tray is installed in the smoke exhaust channel. The bottom of the indoor unit casing has a sloping surface that connects to the water collection tray. The condensate collected by the indoor unit casing can flow naturally into the water collection tray along the sloping surface. A water pumping device is installed above the water collection tray to pump the condensate in the water collection tray onto the surface of the condenser. During cleaning, the water-spraying device above the drip tray sprays the condensate from the tray onto the surface of the condenser, cooling it and improving its heat exchange efficiency, thereby enhancing the air conditioner's energy efficiency. While this range hood effectively utilizes condensate, the method is relatively simple and lacks a high level of automation. Furthermore, most existing range hoods use an internal circulation mode, which, while effective in cooling the room, cannot effectively regulate the oxygen content of the environment. Although some existing technologies disclose range hoods with an external circulation mode, these typically install filters at the fresh air inlet to purify the outdoor air. However, after prolonged use, the filters become less effective and require periodic replacement, making them inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a kitchen air conditioning system that has two modules, internal and external circulation, and can use air conditioning condensate to clean the air valve at the fresh air inlet, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a kitchen air conditioning system, including an air conditioning module and a fume extraction module, wherein the fume extraction module has a smoke exhaust channel, and the air conditioning module includes a compressor, a condenser and an evaporator. The air conditioning module is characterized by having an outdoor air inlet, an indoor air inlet, an outdoor air outlet and an indoor air outlet. The outdoor air inlet is connected to the outside, and the indoor air inlet is connected to the kitchen interior. A first air valve is installed at the outdoor air inlet, and a second air valve is installed at the indoor air inlet. The outdoor air outlet is connected to the outside, and the indoor air outlet is connected to the kitchen interior. In internal circulation mode, the first air valve is closed and the second air valve is open; in external circulation mode, the first air valve is open and the second air valve is closed. The system also includes a cleaning device that can collect condensate water condensed on the surface of the evaporator and can use the collected condensate water to clean the first air valve.

[0005] Preferably, the air conditioning module further includes a condenser fan and an evaporator fan. Outdoor fresh air can enter the condenser fan and evaporator fan through an outdoor air inlet, and indoor air can enter the condenser fan and evaporator fan through an indoor air inlet. A first exhaust duct is formed downstream of the condenser fan, and a second exhaust duct is formed downstream of the evaporator fan. The first and second exhaust ducts are isolated from each other. With this configuration, in external circulation mode, outdoor fresh air can enter both the condenser fan and evaporator fan, and in internal circulation mode, indoor air can enter both the condenser fan and evaporator fan. Furthermore, the exhaust ducts downstream of the condenser and evaporator are isolated from each other, preventing cold air from interfering with hot air.

[0006] To prevent oil fumes from backflowing into the first exhaust duct where the condenser is located, and also to prevent the exhaust air from the first exhaust duct from backflowing into the range hood, the first exhaust duct is connected to the smoke exhaust duct. A first check valve is installed in the first exhaust duct, and a second check valve is installed in the smoke exhaust duct. The first check valve is located upstream of the connection point between the smoke exhaust duct and the first exhaust duct. This design prevents oil fumes from contaminating the condenser components, improves the condenser's heat exchange efficiency, and extends its service life.

[0007] Preferably, the condenser fan and evaporator fan are coaxial, vertically arranged, and synchronously rotating centrifugal fans. Along the airflow direction, the condenser is located downstream of the condenser fan, and the evaporator is located downstream of the evaporator fan, with the evaporator positioned above the condenser. Furthermore, the evaporator is inclined downwards towards the evaporator fan, while the condenser is inclined downwards away from the condenser fan. With this arrangement, during air conditioning operation, condensate droplets on the evaporator surface drip onto the condenser. Because the condenser is placed against the airflow direction, the combined effects of wind speed and gravity allow the condensate to adhere more effectively to the condenser, improving energy efficiency and increasing water treatment capacity.

[0008] The first air valve can have various structures. Preferably, the first air valve includes a rotating valve plate, a positive electrode plate, and a negative electrode plate. The positive electrode plate is a fixed plate, and the negative electrode plate is mounted on the rotating valve plate and can rotate synchronously with the rotating valve plate. In the closed state of the first air valve, the rotating valve plate blocks the outdoor air inlet, and the positive electrode plate and the negative electrode plate are separated. In the open state of the first air valve, the rotating valve plate moves away from the outdoor air inlet, and the negative electrode plate rotates to insert into the gap of the positive electrode plate to cooperate with the positive electrode plate to form an electrostatic purification device.

[0009] The cleaning device can have various structures. Preferably, the cleaning device includes a water collection box, a water pump, and a nozzle. Under the action of the water pump, the condensate in the water collection box is sprayed onto the negative electrode plate through the nozzle, and the dirty water after cleaning can flow into the kitchen drain.

[0010] In order for the system to intelligently control the water pump and air valve according to the water level in the water receiving box, a water level sensor is installed in the water receiving box. The controller can receive the output signal of the water level sensor and control the state of the water pump, the first air valve and the second air valve accordingly based on the received signal.

[0011] To achieve better cleaning of the negative electrode plate, the cleaning device also includes a brush head for scrubbing the negative electrode plate. The brush head can have various structures, such as a lead screw brush.

[0012] The air conditioning components can be installed in multiple different locations. Preferably, the air conditioning module is integrated into the kitchen ceiling, or the compressor of the air conditioning module is integrated into the fume extraction module, and the remaining components of the air conditioning module are integrated into the kitchen ceiling.

[0013] Compared with the prior art, the advantages of this utility model are as follows: The air conditioning module of the kitchen air conditioning system has an outdoor air inlet, an indoor air inlet, an outdoor air outlet, and an indoor air outlet. By controlling the opening and closing of the first air valve and the second air valve, the system can switch between internal circulation fan mode and fresh air conditioning mode. Furthermore, in external circulation mode, the air conditioning condensate can be used to clean the first air valve. On the one hand, this achieves effective utilization of condensate without the need for a separate condensate drainage structure. On the other hand, it can blow out cleaner fresh air through the indoor air outlet, improving the user experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the kitchen air conditioning system according to an embodiment of the present invention (external circulation air conditioning mode);

[0015] Figure 2 This is a schematic diagram of the structure of a kitchen air conditioning system (internal circulation mode) according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the first air valve in the closed state according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the first air valve in the open state according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the positive and negative electrode plate mating structure of the first air valve in an embodiment of the present utility model.

[0019] Figure 6 This is a schematic diagram of the air conditioning component connection of the air conditioning module in an embodiment of this utility model;

[0020] Figure 7 This is a flowchart illustrating the control method of the kitchen air conditioning system according to an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, the kitchen air conditioning system of this embodiment includes an air conditioning module 1 and a fume extraction module 2. In this embodiment, the compressor 11 of the air conditioning module 1 is integrated into the fume extraction module 2. The remaining components of the air conditioning module 1 are installed inside the kitchen ceiling 9, and the fume extraction module 2 is installed below the kitchen ceiling 9.

[0023] like Figure 6As shown, the air conditioning module 1 includes a compressor 11, a condenser 12, an evaporator 13, a condenser fan 14, and an evaporator fan 15, wherein the compressor 11, condenser 12, and evaporator 13 are connected by a refrigerant line 18. Figure 1 and Figure 2 As shown, in this embodiment, the condenser fan 14 and the evaporator fan 15 are coaxially arranged vertically and rotate synchronously as centrifugal fans. Along the airflow direction, the condenser 12 is located downstream of the condenser fan 14, and the evaporator 13 is located downstream of the evaporator fan 15. The evaporator 13 is located above the condenser 12. Furthermore, the evaporator 13 is inclined from top to bottom towards the evaporator fan 15, and the condenser 12 is inclined from top to bottom away from the condenser fan 14.

[0024] The air conditioning module 1 has an outdoor air inlet 101, an indoor air inlet 102, an outdoor air outlet 103, and an indoor air outlet 104. The outdoor air inlet 101 is connected to the outside, the indoor air inlet 102 is connected to the kitchen interior, the outdoor air outlet 103 is connected to the outside, and the indoor air outlet 104 is connected to the kitchen interior. A first air valve 3 is installed at the outdoor air inlet 101, and a second air valve 4 is installed at the indoor air inlet 102. In this embodiment, both the first air valve 3 and the second air valve 4 are rotary valves. In internal circulation mode, the first air valve 3 is closed and the second air valve 4 is open, allowing indoor air to enter the condenser fan 14 and the evaporator fan 15 through the indoor air inlet 102. In external circulation mode, the first air valve 3 is open and the second air valve 4 is closed, allowing fresh outdoor air to enter the condenser fan 14 and the evaporator fan 15 through the outdoor air inlet 101. Downstream of the condenser fan 14, a first exhaust duct 16 is formed, and downstream of the evaporator fan 15, a second exhaust duct 17 is formed. The first exhaust duct 16 and the second exhaust duct 17 are isolated from each other to avoid mutual interference between cold and hot air.

[0025] The fume extraction module 2 has a smoke exhaust channel 21, and a first exhaust duct 16 is connected to the smoke exhaust channel 21. A first check valve 6 is installed in the first exhaust duct 16, and a second check valve 7 is installed in the smoke exhaust channel 21. The first check valve 6 is located upstream of the connection between the smoke exhaust channel 21 and the first exhaust duct 16. When the first check valve 6 is open and the second check valve 7 is closed, the first exhaust duct 16 exhausts air to the outside, and the exhaust air will not enter the interior of the fume extraction module 2. When the first check valve 6 is closed and the second check valve 7 is open, the smoke exhaust channel 21 exhausts smoke to the outside, and the fumes will not flow into the first exhaust duct 16, thus preventing pollution to the condenser 12 and the condenser fan 14. When the first check valve 6 and the second check valve 7 are open simultaneously, the two airflows merge and are discharged through the smoke exhaust channel 21.

[0026] In this embodiment, the first air valve 3 includes a rotating valve plate 31, a positive electrode plate 32, and a negative electrode plate 33. The positive electrode plate 32 is a fixed plate, and the negative electrode plate 33 is mounted on the rotating valve plate 31 and can rotate synchronously with the rotating valve plate 31. When the first air valve 3 is closed, the rotating valve plate 31 blocks the outdoor air inlet 101, and the positive electrode plate 32 and the negative electrode plate 33 are separated. When the first air valve 3 is open, the rotating valve plate 31 moves away from the outdoor air inlet 101, and the negative electrode plate 33 rotates to insert into the gap of the positive electrode plate 32, thus cooperating with the positive electrode plate 32 to form an electrostatic purification device.

[0027] The kitchen air conditioning system of this embodiment also includes a cleaning device, which is used to collect condensate water condensed on the surface of the evaporator 13 and to clean the first air valve 3 with the collected condensate water. Specifically, the cleaning device 5 includes a water collection box 51, a water pump 52, a spray nozzle 53, and a brush head 54. The water collection box 51 is located below the evaporator 13 and is used to collect condensate water condensed on the surface of the evaporator 13. The water pump 52 is used to transport the condensate water in the water collection box 51 to the spray nozzle 53, which then sprays it onto the first air valve 3. When the first air valve 3 is opened, the negative electrode plate 33 rotates into the gap between the positive electrode plate 32 and forms an electrostatic filter with the positive electrode plate 32. The condensate water sprayed from the spray nozzle 53 sprays and cleans the negative electrode plate 33. The brush head 54 is used to scrub the negative electrode plate 33 to improve the cleaning effect. The brush head 54 can be of various structures such as a screw brush. After cleaning, the generated dirty water flows into the kitchen drain 10, preventing the condensate water from being discharged externally.

[0028] In addition, a water level sensor 8 is installed inside the water receiving box 51. The controller can receive the output signal of the water level sensor 8 and control the state of the water pump 52, the first air valve 3 and the second air valve 4 according to the received signal, so as to perform adaptive operation according to the water level and improve the level of intelligence.

[0029] like Figure 7 As shown, the control method for this kitchen air conditioning system includes the following steps:

[0030] S1, Begin;

[0031] S2. Determine if the air conditioner is on;

[0032] If so, proceed to step S3;

[0033] If not, proceed to step S9;

[0034] S3. The first air valve 3 opens, the positive and negative plates 33 are combined, the electrostatic purification device is powered on, the condenser fan 14 and the evaporator fan 15 are turned on, and the compressor 11 is turned on.

[0035] S4. Determine whether the water level sensor 8 is turned on;

[0036] If so, proceed to step S5;

[0037] If not, return to step S3;

[0038] S5. The second air valve 4 opens, the first air valve 3 closes, the positive and negative plates 33 separate, the electrostatic purification device is not powered, the second motor stops, the water pump 52 starts, and the compressor 11 starts.

[0039] S6. Determine whether the working time of water pump 52 is greater than the set time;

[0040] If so, proceed to step 7;

[0041] If not, return to step S5;

[0042] S7. Water pump 52 stops working, first air valve 3 opens, second air valve 4 closes, positive and negative plates 33 are combined, electrostatic purification device is not powered, condenser fan 14 and evaporator fan 15 work, and compressor 11 is turned on.

[0043] S8. Determine whether the compressor 11 has exceeded the set time.

[0044] If so, the electrostatic purification device is powered on, and then proceed to step S10;

[0045] If not, return to step S7;

[0046] S9. Determine if the range hood is turned on;

[0047] If so, proceed to step S10;

[0048] If not, then enter the air supply mode and proceed to step S10;

[0049] S10, End.

[0050] like Figure 1 As shown, when the external circulation fresh air conditioner is turned on, the first air valve 3 opens, the positive and negative plates merge to form an electrostatic purification device and are energized. The condenser fan 14 and evaporator fan 15 turn on, and the compressor 11 turns on, allowing fresh air to enter the room. At this time, the condenser fan draws air from the outdoor air inlet 101 and exchanges heat with the condenser 12 and evaporator 13. The hot air after heat exchange in the condenser 12 is blown outdoors through the first exhaust duct 16. If the range hood is also turned on, it mixes with the fumes and passes through the exhaust duct 21 outdoors. The cold air after heat exchange in the evaporator 13 is blown indoors. During the air conditioner's operation, the evaporator 13 continuously produces condensate, which drips onto the condenser 12. At this time, the condenser 12 is placed against the airflow direction. The wind speed and gravity help the condensate adhere better to the condenser 12, improving energy efficiency and increasing water treatment capacity.

[0051] like Figure 2 As shown, when the condensate reaches a certain water level, the water level sensor 8 is triggered, the second air valve 4 opens, the first air valve 3 closes, the compressor 11 stops working, the positive and negative plates separate, the condenser fan 14 stops working, the water pump 52 starts working, the nozzle 53 sprays water onto the negative plate 33, and the brush head 54 scrubs the negative plate 33. If a lead screw brush is used for reciprocating motion, the dirty water enters and is flushed into the kitchen drain 10. The evaporator fan 15 continues to work, circulating indoor air in an internal fan mode and blowing it into the room through the indoor air outlet 104.

[0052] After the water pump operates for a set time, such as 30 seconds, the condensate in the water collection box 51 is drained, the water pump 52 stops working, and the brush head 54 stops working. At this time, the first air valve 3 opens, the second air valve 4 closes, and the positive and negative plates are combined. However, the electrostatic purification device is not powered at this time. The condenser fan 14 and the evaporator fan 15 operate, and the compressor 11 starts to blow the moisture off the negative plate 33. After a set time, such as 5 minutes, the electrostatic purification device is powered on, and the normal fresh air conditioning state is restored.

Claims

1. A kitchen air conditioning system, comprising an air conditioning module (1) and a fume extraction module (2), wherein the fume extraction module (2) has a smoke exhaust duct (21), and the air conditioning module (1) comprises a compressor (11), a condenser (12), and an evaporator (13), characterized in that: The air conditioning module (1) has an outdoor air inlet (101), an indoor air inlet (102), an outdoor air outlet (103), and an indoor air outlet (104). The outdoor air inlet (101) is connected to the outside, and the indoor air inlet (102) is connected to the kitchen. A first air valve (3) is installed at the outdoor air inlet (101), and a second air valve (4) is installed at the indoor air inlet (102). The outdoor air outlet (103) is connected to the outside, and the indoor air outlet (104) is connected to the kitchen. In the internal circulation mode, the first air valve (3) is closed and the second air valve (4) is open. In the external circulation mode, the first air valve (3) is open and the second air valve (4) is closed. The module also includes a cleaning device that can collect condensate water condensed on the surface of the evaporator (13) and use the collected condensate water to clean the first air valve (3).

2. The kitchen air conditioning system according to claim 1, characterized in that: The air conditioning module (1) also includes a condenser fan (14) and an evaporator fan (15). Outdoor fresh air can enter the condenser fan (14) and the evaporator fan (15) through the outdoor air inlet (101), and indoor air can enter the condenser fan (14) and the evaporator fan (15) through the indoor air inlet (102). A first exhaust duct (16) is formed downstream of the condenser fan (14), and a second exhaust duct (17) is formed downstream of the evaporator fan (15). The first exhaust duct (16) and the second exhaust duct (17) are isolated from each other.

3. The kitchen air conditioning system according to claim 2, characterized in that: The first exhaust duct (16) is connected to the smoke exhaust duct (21). A first check valve (6) is installed in the first exhaust duct (16), and a second check valve (7) is installed in the smoke exhaust duct (21). The first check valve (6) is located upstream of the connection between the smoke exhaust duct (21) and the first exhaust duct (16).

4. The kitchen air conditioning system according to claim 2, characterized in that: The condenser fan (14) and the evaporator fan (15) are coaxial, vertically arranged, and synchronously rotating centrifugal fans. Along the airflow direction, the condenser (12) is located downstream of the condenser fan (14), and the evaporator (13) is located downstream of the evaporator fan (15). The evaporator (13) is located above the condenser (12). Furthermore, the evaporator (13) is inclined from top to bottom towards the evaporator fan (15), and the condenser (12) is inclined from top to bottom away from the condenser fan (14).

5. The kitchen air conditioning system according to claim 2, characterized in that: The first air valve (3) includes a rotating valve plate (31), a positive electrode plate (32), and a negative electrode plate (33). The positive electrode plate (32) is a fixed plate, and the negative electrode plate (33) is mounted on the rotating valve plate (31) and can rotate synchronously with the rotating valve plate (31). When the first air valve (3) is closed, the rotating valve plate (31) blocks the outdoor air inlet (101), and the positive electrode plate (32) and the negative electrode plate (33) are separated. When the first air valve (3) is open, the rotating valve plate (31) leaves the outdoor air inlet (101), and the negative electrode plate (33) rotates to insert into the gap of the positive electrode plate (32) and cooperates with the positive electrode plate (32) to form an electrostatic purification device.

6. The kitchen air conditioning system according to claim 5, characterized in that: The cleaning device includes a water receiving box (51), a water pump (52) and a nozzle (53). Under the action of the water pump (52), the condensate in the water receiving box (51) is sprayed onto the negative electrode plate (33) through the nozzle (53), and the dirty water after cleaning can flow into the kitchen drain (10).

7. The kitchen air conditioning system according to claim 6, characterized in that: A water level sensor (8) is installed in the water receiving box (51). The controller can receive the output signal of the water level sensor (8) and control the state of the water pump (52), the first air valve (3) and the second air valve (4) according to the received signal.

8. The kitchen air conditioning system according to claim 6, characterized in that: The cleaning device also includes a brush head (54) for scrubbing the negative electrode plate (33).

9. The kitchen air conditioning system according to claim 1, characterized in that: The air conditioning module (1) is integrated on the kitchen ceiling (9), or the compressor (11) of the air conditioning module (1) is integrated on the fume extraction module (2), and the remaining components of the air conditioning module (1) are integrated on the kitchen ceiling (9).

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