Refrigeration type range hood

Abstract

An oil smoke suction channel, a heat dissipation air channel and an inner unit air channel are arranged in a machine shell, an adsorption and desorption rotating wheel is locally located in the heat dissipation air channel and locally located in the inner unit air channel, and the adsorption and desorption rotating wheel is located on the upstream of an evaporator and on the downstream of a condenser in the air flowing direction. An air outlet of the heat dissipation air channel communicates with the oil smoke suction channel through the ventilation opening. According to the refrigeration type range hood, the adsorption and desorption rotating wheel is used for adsorbing water in normal-temperature air at the upstream of the evaporator, desorbing the water by high-temperature air at the downstream of the condenser, and discharging the water outwards through the oil smoke suction channel, so that condensed water generated on the surface of the evaporator is reduced, and the condensed water needing to be heated and evaporated by the condenser is reduced; the stability of the condensate water treatment system is improved. In addition, dehumidification is conducted in advance on the upstream of the evaporator through the adsorption and desorption rotating wheel, the moisture content of inlet air can be reduced, the proportion of sensible heat loads can be increased under the condition that the refrigerating power of a refrigerating system is the same, and the lower air outlet temperature is achieved.

Description

Technical Field

[0001] The utility model relates to an oil fume extractor, in particular to a refrigerating type oil fume extractor. Background Art

[0002] There are various refrigerating type oil fume extractors disclosed in the prior art, which add an air conditioner component on the basis of the oil fume extractor platform and can realize all the functions of the oil fume extractor and the functions of the air conditioner. The air conditioner component includes an indoor unit module and an outdoor unit module. Among them, the indoor unit module includes an evaporator and an indoor unit fan, and the outdoor unit module includes a condenser and an outdoor unit fan. When the oil fume extractor works in the refrigerating mode, condensed water will condense on the surface of the evaporator. In order to avoid the condensed water dripping and affecting the normal operation of the oil fume extractor, it is necessary to treat the condensed water. The existing condensed water treatment solution is to collect the condensed water through a water receiving tray, and the condensed water is discharged to the outside through a water pipe. Discharging the condensed water to the outside is a conventional solution. However, under the installation conditions of a kitchen air conditioner, most developers generally do not reserve equipment installation positions, and there will also be relatively large obstacles to installing the outdoor unit and the outdoor unit bracket additionally. For example, the property management does not allow installation for the sake of the unity of the facade. Therefore, under the installation conditions of the kitchen, the no-outdoor-unit air conditioner solution is the ideal choice. Therefore, another major problem that arises is the placement of the condensate pipe. Most users are not very willing to accept drilling holes in the kitchen exterior wall. If there is a condensate pipe extending out from the product, it is not beautiful either. Almost all users who install later hope that the machine can be installed without modifying other positions in the kitchen. Therefore, there is a large resistance to discharging the condensate water externally, which is not convenient for large-scale installation of the product. In addition, the temperature of the condensate water of the air conditioner is relatively low. If this part of the condensate water can be used to provide additional heat dissipation for the air conditioner, it will greatly improve the overall energy consumption of the system. However, the mainstream existing condensate water external discharge solutions cannot achieve the function of recovering cold energy. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a refrigerating type oil fume extractor aiming at the above-mentioned prior art status, which can effectively improve the efficiency of condensed water treatment and the treated condensed water can be discharged through the oil fume channel.

[0004] The technical solution adopted by the present utility model to solve the above technical problems is as follows: A refrigerating range hood, including a casing, a compressor is installed inside the casing, the casing has an oil fume suction channel, a heat dissipation air duct and an internal unit air duct, an oil fume suction fan is installed in the oil fume suction channel, a condenser and a heat dissipation fan are installed in the heat dissipation air duct, an evaporator and an internal unit fan are installed in the internal unit air duct, the compressor, the condenser and the evaporator are connected and communicated through a refrigerant pipeline, and it is characterized in that: An adsorption and desorption wheel is installed inside the casing, the adsorption and desorption wheel is partially located in the heat dissipation air duct and partially located in the internal unit air duct, and, along the air flow direction, the adsorption and desorption wheel located in the internal unit air duct is upstream of the evaporator, and the adsorption and desorption wheel located in the heat dissipation air duct is downstream of the condenser, the oil fume suction channel has a ventilation opening connected to the heat dissipation air duct, and the air outlet of the heat dissipation air duct is connected to the oil fume suction channel through the ventilation opening.

[0005] In order to form a suction effect on the evaporator, along the air flow direction, the internal unit fan is arranged downstream of the evaporator. In this way, the air in the environment passes through the wheel and the evaporator in sequence and is blown out of the range hood.

[0006] In order to heat and desorb the condensed water adsorbed on the adsorption and desorption wheel and then suck it away, along the air flow direction, the heat dissipation fan is arranged downstream of the corresponding adsorption and desorption wheel.

[0007] There can be various layout modes for the heat dissipation air duct and the internal unit air duct. Preferably, the heat dissipation air duct is arranged above the internal unit air duct, the adsorption and desorption wheel is arranged vertically, the upper part of the adsorption and desorption wheel is located in the heat dissipation air duct, and the lower part of the adsorption and desorption wheel is located in the internal unit air duct.

[0008] In order to use the air conditioner condensed water to dissipate heat from the condenser, a first water box for receiving the condensed water dripping from the surface of the evaporator is installed below the evaporator, and the condensed water falling into the first water box can be transported to the condenser through a water pump and a water outlet pipe.

[0009] In order to recycle the condensed water not consumed by the condenser, a second water box is installed below the condenser, the second water box is used to receive the condensed water not consumed by the condenser, and the condensed water in the second water box can flow back to the first water box through a return pipe.

[0010] There can be various connection modes between the heat dissipation air duct and the oil fume suction channel. Preferably, the oil fume suction fan is a centrifugal fan, and the ventilation opening is opened on the volute annular wall of the oil fume suction fan, and the air outlet of the heat dissipation fan is connected to the air inlet of the oil fume suction fan through the ventilation opening.

[0011] In order to enable the air blown by the cooling fan to enter the oil fume extraction fan more smoothly, the cooling fan is a centrifugal fan and is located above the oil fume extraction fan. The central axis of the impeller of the cooling fan is parallel to the central axis of the impeller of the oil fume extraction fan and perpendicular to the front surface of the casing.

[0012] In order to drive the adsorption and desorption rotor to rotate, a rotor motor and a rotating shaft are further included. The rotating shaft is installed on the output shaft of the rotor motor, and the adsorption and desorption rotor is installed on the rotating shaft.

[0013] The adsorption and desorption rotor can have various forms. Preferably, the adsorption and desorption rotor is a zeolite rotor. In addition, a series of adsorbing and desorbing materials such as gel and silica gel can also be used to make the rotor.

[0014] In order to blow cold air from the casing, an air outlet module is installed on the casing, and the air outlet of the internal unit fan is in fluid communication with the air inlet of the air outlet module.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: The refrigerating range hood is provided with an adsorption and desorption rotor inside the casing. The adsorption and desorption rotor is partially located in the heat dissipation air duct and downstream of the condenser, and partially located in the internal unit air duct and upstream of the evaporator. The air outlet of the heat dissipation air duct is connected to the oil fume extraction channel. Thus, the adsorption and desorption rotor can be used to adsorb water in normal temperature air upstream of the evaporator, and then desorb it with the high-temperature air downstream of the condenser and discharge it through the oil fume extraction channel. Furthermore, the generation of condensed water on the surface of the evaporator is reduced, the amount of condensed water that needs to be heated and evaporated by the condenser is reduced, and the stability of the condensed water treatment system is improved. In addition, by pre-dehumidifying the inlet air with the adsorption and desorption rotor upstream of the evaporator, the moisture content of the inlet air can be reduced. Under the condition of the same refrigeration power of the refrigeration system, the proportion of the sensible heat load can be increased, and a lower air outlet temperature can be achieved. Similarly, if the same air outlet temperature is required, the cooling capacity of the refrigeration system can be reduced by using this set of condensed water treatment system, and the same refrigeration effect can also be achieved. In addition, by heating the air with the condenser, the desorption efficiency of the downstream adsorption and desorption rotor can be improved, ensuring the reliability of the system operation. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the range hood according to an embodiment of the present utility model;

[0017] Figure 2 It is a schematic connection diagram of the air conditioning assembly according to an embodiment of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the zeolite rotor assembly according to an embodiment of the present utility model. Detailed Embodiments

[0019] The following further describes the present utility model in detail in conjunction with the accompanying drawings and embodiments.

[0020] As Figures 1 to 3 shown, the refrigerated range hood of this embodiment includes a housing 1, a compressor 2 is installed inside the housing 1, and the housing 1 has an oil fume suction channel 101, a heat dissipation air duct 102 and an internal unit air duct 103. An oil fume suction fan 3 is installed in the oil fume suction channel 101, a condenser 4 and a heat dissipation fan 5 are installed in the heat dissipation air duct 102, an evaporator 6 and an internal unit fan 7 are installed in the internal unit air duct 103, and an air outlet module (not shown in the figure) is installed on the housing 1. The air outlet of the internal unit fan 7 is in fluid communication with the air inlet of the air outlet module. The compressor 2, the condenser 4 and the evaporator 6 are connected through a refrigerant pipeline 8, and the compressor 2, the condenser 4 and the evaporator 6 constitute an air conditioning assembly, and its refrigeration principle is the same as that of the existing air conditioner, and will not be elaborated here.

[0021] In this embodiment, the heat dissipation air duct 102 is isolated from the internal unit air duct 103, and the heat dissipation air duct 102 is arranged above the internal unit air duct 103. An adsorption and desorption wheel 9 is installed inside the housing 1. The adsorption and desorption wheel 9 is arranged vertically. The upper part of the adsorption and desorption wheel 9 is arranged in the heat dissipation air duct 102, and the lower part of the adsorption and desorption wheel 9 is arranged in the internal unit air duct 103, that is, the adsorption and desorption wheel 9 is partially arranged in the heat dissipation air duct 102 and partially arranged in the internal unit air duct 103.

[0022] Along the air flow direction, the adsorption and desorption wheel 9 arranged in the internal unit air duct 103 is located upstream of the evaporator 6, and the internal unit fan 7 is located downstream of the evaporator 6. The air in the environment passes through the internal unit fan 7, and successively passes through the adsorption and desorption wheel 9 and the evaporator 6 and is blown out of the system to provide cold air. At the same time, the adsorption and desorption wheel 9 can adsorb the water in the normal temperature air to reduce the generation of condensed water on the surface of the evaporator 6.

[0023] Along the air flow direction, the adsorption and desorption wheel 9 arranged in the heat dissipation air duct 102 is located downstream of the condenser 4, and the heat dissipation fan 5 is arranged downstream of the corresponding adsorption and desorption wheel 9. Thus, by using the condenser 4 to heat the air and under the suction action of the heat dissipation fan 5, the desorption efficiency of the downstream adsorption and desorption wheel 9 can be improved, and the reliability of the system operation can be ensured.

[0024] In this embodiment, a first water box 11 is installed below the evaporator 6. The first water box 11 is used to receive the condensed water dripping from the surface of the evaporator 6. The condensed water falling into the first water box 11 can be transported to the condenser 4 through the water pump 13 and the water outlet pipe 14. A second water box 12 is installed below the condenser 4. The second water box 12 is used to receive the unconsumed condensed water of the condenser 4. The condensed water in the second water box 12 can flow back into the first water box 11 through the water return pipe 15. When working in the refrigeration mode, the condensed water condensed on the surface of the evaporator 6 drips into the first water box 11, and the condensed water in the first water box 11 is transported to the condenser 4 to cool the condenser 4 so as to improve the air-conditioning energy efficiency.

[0025] In this embodiment, both the oil fume suction fan 3 and the heat dissipation fan 5 are centrifugal fans. The heat dissipation fan 5 is a centrifugal fan and is located above the oil fume suction fan 3. The central axis of the impeller of the heat dissipation fan 5 is parallel to the central axis of the impeller of the oil fume suction fan 3 and perpendicular to the front surface of the machine shell 1. A ventilation opening 32 is formed on the volute wall 31 of the oil fume suction fan 3. The air outlet of the heat dissipation fan 5 is connected to the air inlet of the oil fume suction fan 3 through the ventilation opening 32, that is, the heat dissipation air duct 102 is connected to the oil fume suction air duct 101 through the ventilation opening 32. The heat of the condenser 4 and the condensed water heated and desorbed by the adsorption and desorption rotor 9 are discharged into the oil fume suction air duct 101 and finally discharged to the outside of the range hood under the action of the oil fume suction fan 3.

[0026] The adsorption and desorption rotor 9 rotates under the drive of the rotor motor 16. Specifically, the rotating shaft 17 is installed on the output shaft of the rotor motor 16, and the adsorption and desorption rotor 9 is installed on the rotating shaft 17. The adsorption and desorption rotor 9 of this embodiment is a zeolite rotor. In addition, a series of adsorbable and desorbable materials such as gel and silica gel can also be used to make the rotor.

[0027] When the refrigerating range hood works, the condensed water circulation process is as follows: The wet air in the environment passes through the rotating zeolite rotor, and part of the water in the air is adsorbed. Then, after being cooled by the evaporator 6, part of the condensed water is generated on the surface of the evaporator 6. When the condensed water accumulates to a certain amount, the condensed water flows down and is collected in the first water pan 11 located below the evaporator 6. It is pumped to the upper part of the condenser 4 through the water pump 13 and the water outlet pipe 14 and evenly distributed on the upper surface of the condenser 4. Then, through the heating of the high-temperature condenser 4 and the wind brought by the heat dissipation fan 5, most of the condensed water is evaporated into the air. Subsequently, the heated air passes through the zeolite rotor to heat and desorb it, and the condensed water adsorbed before the air enters the evaporator 6 is discharged into the hot air again and enters the oil fume suction air duct 101 through the ventilation opening 32 and is finally discharged to the outside of the system.

[0028] The condensate water treatment system of this range hood will closed-loop control the rotation speed of the runner motor 16 according to the changes of the environment and the system, and control the efficiency of water treatment. The rotation speed of the runner motor 16 can be adjusted according to the environmental temperature and humidity, the liquid level of the evaporator water receiving box (i.e., the first water box 11), and the evaporation temperature and condensation temperature of the system. Increasing the rotation speed of the runner motor 16 is beneficial to improving the treatment efficiency of condensate water. On the contrary, it is not conducive to the treatment of condensate water. When the environmental temperature rises, it will affect the condensation temperature of the condenser 4 and improve the ability of the condenser 4 to evaporate and condense condensate water. At this time, the rotation speed of the runner motor 16 can be appropriately reduced, and vice versa. When the environmental humidity rises, it will cause the increase of condensate water production and the saturation of zeolite. At this time, the rotation speed of the runner motor 16 can be appropriately increased, and vice versa. If the liquid level of the evaporator water receiving box rises, it indicates that the water production of the evaporator 6 at this time has increased, which may be caused by a series of factors such as environmental changes. The rise of the liquid level is a final feedback. At this time, the rotation speed of the runner motor 16 should be increased to improve the efficiency of the condensate water treatment system, and vice versa. The condensation temperature will affect the evaporation efficiency of condensate water on the condenser 4. The more condensate water evaporates on the condenser 4, the less condensate water will circulate on the runner, and vice versa. The evaporation temperature will affect the production of condensate water, and it needs to be judged according to the liquid level of the evaporator water receiving box.

[0029] As used in this utility model, "fluid communication" refers to the spatial position relationship between two components or parts, hereinafter uniformly referred to as the first part and the second part respectively, that is, the fluid (gas, liquid or a mixture of both) can flow along the flow path from the first part and / or be transported to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party. The third party can be a fluid passage such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing the fluid to flow through, or a combination of the above.

Claims

1. A refrigerating range hood, comprising a housing (1), a compressor (2) is installed inside the housing (1), the housing (1) has an oil suction and smoke exhaust channel (101), a heat dissipation air duct (102) and an inner machine air duct (103), an oil suction and smoke exhaust fan (3) is installed inside the oil suction and smoke exhaust channel (101), a condenser (4) and a heat dissipation fan (5) are installed inside the heat dissipation air duct (102), an evaporator (6) and an inner machine fan (7) are installed inside the inner machine air duct (103), the compressor (2), the condenser (4) and the evaporator (6) are connected and communicated through a refrigerant pipeline (8), and it is characterized in that: An adsorption and desorption wheel (9) is installed inside the casing (1). The adsorption and desorption wheel (9) is partially located in the heat dissipation air duct (102) and partially located in the indoor unit air duct (103). And, along the air flow direction, the adsorption and desorption wheel (9) located in the indoor unit air duct (103) is upstream of the evaporator (6), and the adsorption and desorption wheel (9) located in the heat dissipation air duct (102) is downstream of the condenser (4). The oil fume suction channel (101) has a ventilation opening (32) communicating with the heat dissipation air duct (102), and the air outlet of the heat dissipation air duct (102) is communicated with the oil fume suction channel (101) through the ventilation opening (32).

2. The refrigerating range hood according to claim 1, wherein: Along the air flow direction, the indoor unit fan (7) is arranged downstream of the evaporator (6).

3. The refrigerating range hood according to claim 1, wherein: Along the air flow direction, the heat dissipation fan (5) is arranged downstream of the corresponding adsorption and desorption wheel (9).

4. The refrigerated range hood according to claim 1, characterized in that: The heat dissipation air duct (102) is arranged above the indoor unit air duct (103). The adsorption and desorption wheel (9) is vertically arranged, with the upper part of the adsorption and desorption wheel (9) located in the heat dissipation air duct (102) and the lower part of the adsorption and desorption wheel (9) located in the indoor unit air duct (103).

5. The refrigerating range hood according to claim 1, characterized in that: A first water box (11) for receiving the condensed water dripping from the surface of the evaporator (6) is installed below the evaporator (6). The condensed water falling into the first water box (11) can be transported to the condenser (4) through a water pump (13) and a water outlet pipe (14).

6. The refrigerated range hood according to claim 5, wherein: A second water box (12) is installed below the condenser (4). The second water box (12) is used to receive the unconsumed condensed water of the condenser (4), and the condensed water in the second water box (12) can flow back to the first water box (11) through a water return pipe (15).

7. The refrigerated range hood according to claim 1, characterized in that: The oil fume suction fan (3) is a centrifugal fan. The ventilation opening (32) is opened on the volute ring wall (31) of the oil fume suction fan (3), and the air outlet of the heat dissipation fan (5) is communicated with the air inlet of the oil fume suction fan (3) through the ventilation opening (32).

8. The refrigerated range hood according to claim 7, wherein: The heat dissipation fan (5) is a centrifugal fan and is located above the oil fume suction fan (3). The central axis of the impeller of the heat dissipation fan (5) is parallel to the central axis of the impeller of the oil fume suction fan (3) and perpendicular to the front surface of the casing (1).

9. The refrigerating range hood according to any one of claims 1 to 8, characterized in that: It further includes a wheel motor (16) and a rotating shaft (17). The rotating shaft (17) is installed on the output shaft of the wheel motor (16), and the adsorption and desorption wheel (9) is installed on the rotating shaft (17).

10. The refrigerating range hood according to claim 9, characterized in that: The adsorption and desorption wheel (9) is a zeolite wheel.

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