Refrigerated range hood

Abstract

A kind of refrigeration type range hood, including fan frame and air inlet body, fan frame is installed with range hood fan, compressor, heat dissipation module and inner machine module are installed on the outside of fan frame, heat dissipation module has heat dissipation air duct, fan frame is opened with air vent, air inlet body has smoke inlet, range hood fan includes first fan and second fan parallelly, valve plate for opening and closing air vent is installed at air vent, in the open state of air vent, heat dissipation air duct is connected with the air inlet of first fan by air vent, first air pipe is installed at the air outlet of first fan, second air pipe is installed at the air outlet of second fan, first air pipe and second air pipe are independent of each other.The refrigeration type range hood adopts double fan structure, can satisfy the dual needs of large cooling capacity section refrigeration and large air volume smoke exhaust, and, the air outlet of first fan and second fan is installed with independent exhaust pipe, avoid two-way airflow interference, benefit to improve smoke exhaust and heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to a range hood, and more particularly to a refrigerated range hood. Background Technology

[0002] In a kitchen environment, cooking generates a large amount of fumes and heat, leading to increased indoor temperature and decreased comfort. To simultaneously address the needs of fume extraction and environmental cooling, refrigerated range hoods were invented. Based on traditional range hoods, refrigerated range hoods integrate air conditioning components such as compressors, condensers, and evaporators. These components are connected via refrigerant piping, allowing for fume extraction while simultaneously regulating kitchen temperature through an air conditioning system. This has become an important development direction in the current kitchen appliance industry. However, existing refrigerated range hoods still have certain drawbacks. For example, some refrigerated range hoods attempt to eliminate the need for additional heat dissipation components by using the exhaust duct within the range hood itself to dissipate heat from the condenser, thus reducing costs. For instance, the kitchen air conditioning system disclosed in Chinese invention patent number 201811150307.4 (authorization announcement number CN 110966676 B) installs the condenser in the exhaust duct downstream of the range hood, using the airflow from the exhaust fan to directly blow on the condenser, thereby removing the heat generated during refrigerant operation. While this solution eliminates the need for a separate outdoor unit, simplifying the equipment structure, the exhaust air from the range hood contains a large amount of oil fume particles. These particles easily adhere to the condenser surface, causing a sharp decrease in condenser heat dissipation efficiency and even leading to pipe blockages and abnormal refrigerant circulation. To alleviate this problem, existing solutions require the addition of an electrostatic filtration device to intercept oil fume particles. However, this not only increases the manufacturing cost and assembly complexity of the equipment but also raises the risk of malfunctions. The filtration efficiency of the electrostatic device cannot reach 100%, and oil residue will still remain on the condenser surface after long-term use. Furthermore, the electrostatic device itself requires regular maintenance, further increasing the user's operating costs and workload. Another example is a refrigeration-type range hood disclosed in Chinese utility model patent No. 202420143790.8 (authorization announcement No. CN 221881576 U), which has ventilation openings on the volute ring wall of the cooling fan. The cooling fan provides separate airflow to the condenser for heat dissipation, and then the heated air is guided into the exhaust duct of the range hood and discharged outdoors. While this solution avoids direct contact between cooking fumes and the condenser, the added cooling fan directly increases the hardware cost of the equipment. Furthermore, the extra moving part reduces the overall operational reliability of the device. Due to space constraints within the range hood, the cooling fan is typically small, limiting the amount of air it can provide. In conclusion, further improvements to existing cooling-type range hoods are necessary. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cooling range hood that can meet the cooling needs of a large cooling capacity range and has dual fans that can exhaust air independently, 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 refrigerated range hood, including a fan frame and an air inlet body located at the bottom of the fan frame. A range hood fan is installed inside the fan frame, and a compressor, a heat dissipation module, and an indoor unit module are installed outside the fan frame. The heat dissipation module has a heat dissipation duct. A vent is opened on the fan frame, and the air inlet body has a smoke inlet. The range hood fan includes a first fan and a second fan connected in parallel. A valve plate for opening and closing the vent is installed at the vent. When the vent is open, the heat dissipation duct is connected to the air inlet of the first fan through the vent. A first duct is installed at the air outlet of the first fan, and a second duct is installed at the air outlet of the second fan. The first duct and the second duct are independent of each other.

[0005] Preferably, in the mode where only the range hood is on, the vent is closed and the smoke inlet is open, and the smoke inlet is connected to the air inlets of the first fan and the second fan; in the mode where only the air conditioner is on, the vent is open and the smoke inlet is closed, and the heat dissipation duct is connected to the air inlet of the first fan through the vent; in the mode where both the range hood and the air conditioner are on, the vent is open and the smoke inlet is open, the heat dissipation duct is connected to the air inlet of the first fan through the vent, and the smoke inlet is connected to the air inlets of the first fan and the second fan.

[0006] The first and second fans can have various structures. Preferably, the first and second fans are both centrifugal fans with a double air inlet structure, or both are centrifugal fans with a single air inlet structure, or one of them is a centrifugal fan with a single air inlet structure and the other is a centrifugal fan with a double air inlet structure.

[0007] In a further preferred embodiment, both the first fan and the second fan are vertically arranged, the central axis of the impeller of the first fan and the central axis of the impeller of the second fan are located on the same straight line and perpendicular to the left and right side walls of the fan frame, and the ventilation opening is located on the side wall of the fan frame opposite to the air inlet of the first fan.

[0008] Further preferably, the smoke inlet is equipped with a smoke baffle. In the mode where only the air conditioner is on, the smoke baffle is closed, and in the mode where the range hood is on, the smoke baffle is open.

[0009] In order to achieve intelligent control of the valve plate and the smoke baffle, the valve plate is an electric valve plate, and the valve plate and the smoke baffle can be linked together under the control of the controller.

[0010] The heat dissipation module and the indoor unit module can have various structures. Preferably, the heat dissipation module includes a condenser, and the indoor unit module includes an evaporator and an indoor unit fan. The compressor, condenser, and evaporator are connected by refrigerant piping.

[0011] In order to dissipate heat from the compressor and condenser, the heat dissipation module has a heat dissipation air inlet, and a heat dissipation air duct is formed between the heat dissipation air inlet and the vent, and the compressor and condenser are located in the heat dissipation air duct.

[0012] Preferably, the condenser is located upstream of the compressor along the airflow direction.

[0013] As a preferred embodiment of any of the above solutions, the indoor unit module has an indoor unit air inlet and an indoor unit air outlet.

[0014] Compared with the prior art, the advantages of this utility model are as follows: the exhaust fans of this refrigeration range hood are a first fan and a second fan connected in parallel, which not only provides a larger heat dissipation air volume for the condenser, but also increases the air volume for exhausting fumes, meeting the dual needs of large-capacity cooling and large-volume exhaust. In addition, the air outlets of the first fan and the second fan are equipped with independent exhaust pipes to avoid mutual interference between the two airflows, which is conducive to improving the exhaust and heat dissipation effects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (valve plate in open state);

[0016] Figure 2 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (valve plate closed);

[0017] Figure 3 This is a side view of the range hood according to an embodiment of the present utility model;

[0018] Figure 4 This is another side view of the range hood according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram showing the connection of the refrigeration system components according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (single-operated range hood state);

[0021] Figure 7 This is another structural schematic diagram of the range hood according to an embodiment of the present utility model (single-operated range hood state);

[0022] Figure 8 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (air conditioner only);

[0023] Figure 9 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (both the range hood and the air conditioner are turned on). Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 5 As shown, the refrigerated range hood of this embodiment includes a fan frame 1 and an air inlet 2 located at the bottom of the fan frame 1. A range hood fan 3 is installed inside the fan frame 1. The air inlet 2 has a smoke inlet 21 and a smoke baffle 22 is installed in the smoke inlet 21.

[0026] The fume extractor 3 in this embodiment includes a first fan 31 and a second fan 32 connected in parallel. The first fan 31 and the second fan 32 have identical or similar performance. Both the first fan 31 and the second fan 32 are centrifugal fans with a dual-inlet structure. Both the first fan 31 and the second fan 32 are vertically arranged, with the impeller center axis of the first fan 31 and the impeller center axis of the second fan 32 located on the same straight line and perpendicular to the left and right side walls of the fan frame 1. Alternatively, both the first fan 31 and the second fan 32 can be centrifugal fans with a single-inlet structure, or one of them can be a single-inlet centrifugal fan and the other a dual-inlet centrifugal fan.

[0027] In this embodiment, a first duct 81 is installed at the air outlet of the first fan 31, and a second duct 82 is installed at the air outlet of the second fan 32. The first duct 81 and the second duct 82 are independent of each other. That is, the first fan 31 and the second fan 32 use independent exhaust.

[0028] The compressor 4, heat dissipation module 5, and indoor unit module 6 are externally mounted on the fan frame 1. The heat dissipation module 5 includes a condenser 52, and the indoor unit module 6 includes an evaporator 61 and an indoor unit fan 62. The compressor 4, condenser 52, and evaporator 61 are connected via refrigerant piping 9. The compressor 4, condenser 52, and evaporator 61 constitute an air conditioning assembly, and its working principle can be referenced from existing air conditioners or cooling range hoods, which will not be elaborated further.

[0029] The heat dissipation module 5 has a heat dissipation air inlet 53, and the fan frame 1 has a ventilation opening 11. The ventilation opening 11 is located on the side wall of the fan frame 1 opposite to the air inlet of the first fan 31, and a heat dissipation air duct 51 is formed between the heat dissipation air inlet 53 and the ventilation opening 11. The compressor 4 and the condenser 52 are located in the heat dissipation air duct 51 and along the air flow direction, with the condenser 52 located upstream of the compressor 4. In this embodiment, the indoor unit module 6 is located above the fan frame 1. The indoor unit module 6 has an indoor unit air inlet and an indoor unit air outlet. In cooling mode, the indoor unit air outlet blows out cold air, improving the user's cooking experience.

[0030] A valve plate 7 is installed at the vent 11 to open and close the vent 11. The valve plate 7 is an electric valve plate, and the valve plate 7 and the smoke baffle 22 can be linked together under the control of the controller.

[0031] like Figure 6 As shown, both the first fan 31 and the second fan 32 adopt a dual-inlet structure. When only one range hood is in operation, the valve plate 7 is in the vertical position, the vent 11 is closed, the smoke baffle 22 is open, and the smoke inlet 21 is connected to the air inlets of the first fan 31 and the second fan 32. The fumes enter the first fan 31 and the second fan 32 through the smoke inlet 21 and are discharged into the common flue through the first duct 81 and the second duct 82, respectively. At this time, the operating mode is the same as that of a normal range hood. The condenser 52 is completely separated from the air inlets of the first fan 31 and the second fan 32 by the valve plate 7, and the fumes will not contaminate the condenser 52.

[0032] like Figure 7 As shown, the first fan 31 adopts a single air inlet structure. When the range hood is turned on, the valve plate 7 is in the horizontal position, the vent 11 is open, and the smoke baffle 22 is open. At this time, the smoke inlet 21 is connected to the air inlet of the second fan 32. The fumes enter the second fan 32 from the smoke inlet 21 and are discharged into the common flue through the second duct 82. At this time, the working mode is the same as that of a normal range hood. The condenser 52 is completely separated from the smoke inlet 21 by the valve plate 7, so the fumes will not pollute the condenser 52.

[0033] like Figure 8 As shown, when only the air conditioner is on, the valve plate 7 is in the horizontal position, the vent 11 is fully open, the smoke baffle 22 is closed, and the heat dissipation duct 51 is connected to the air inlet of the first fan 31 through the vent 11. The heat from the heat dissipation duct 51 is discharged into the first air duct 81 through the first fan 31. At this time, it is preferable to only turn on the first fan 31. Since the air volume of the first fan 31 is large enough to provide enough air for the condenser 52 to dissipate heat, the size of the condenser can be reduced, thereby reducing the cost of the condenser.

[0034] like Figure 9As shown, both the first fan 31 and the second fan 32 adopt a dual-inlet structure. When both the range hood and the air conditioner are turned on, the valve plate 7 is in the horizontal position, the vent 11 is fully open, and the heat dissipation duct 51 is connected to the air inlet of the first fan 31 through the vent 11. The heat from the condenser 52 and the compressor 4 is exhausted to the outside through the first fan 31. At this time, the smoke baffle 22 is also open, and the fumes entering through the smoke inlet 21 are drawn into the first fan 31 and the second fan 32, and exhausted to the outside through the first duct 81 and the second duct 82 respectively. Because the heat dissipation airflow passes through the condenser 52 first and then through the range hood 32, the fumes will not contaminate the condenser 52. In this mode, the first fan 31 serves both to dissipate heat from the condenser 52 and to extract fumes.

[0035] This refrigerated range hood can be controlled by a voice module, which is equipped with a control module, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A refrigerated range hood, comprising a fan frame (1) and an air inlet (2) disposed at the bottom of the fan frame (1), wherein a range hood fan (3) is installed inside the fan frame (1), and a compressor (4), a heat dissipation module (5), and an indoor unit module (6) are installed outside the fan frame (1), wherein the heat dissipation module (5) has a heat dissipation duct (51), a vent (11) is opened on the fan frame (1), and the air inlet (2) has a smoke inlet (21), characterized in that: The fume extraction fan (3) includes a first fan (31) and a second fan (32) connected in parallel. A valve plate (7) for opening and closing the vent (11) is installed at the vent (11). When the vent (11) is open, the heat dissipation duct (51) is connected to the air inlet of the first fan (31) through the vent (11). A first air duct (81) is installed at the air outlet of the first fan (31), and a second air duct (82) is installed at the air outlet of the second fan (32). The first air duct (81) and the second air duct (82) are independent of each other.

2. The refrigerated range hood according to claim 1, characterized in that: In the mode of a single-operated range hood, the vent (11) is closed and the smoke inlet (21) is open, and the smoke inlet (21) is connected to the air inlets of the first fan (31) and the second fan (32); in the mode of a single-operated air conditioner, the vent (11) is open and the smoke inlet (21) is closed, and the heat dissipation duct (51) is connected to the air inlet of the first fan (31) through the vent (11); in the mode of both the range hood and the air conditioner being turned on, the vent (11) is open and the smoke inlet (21) is open, and the heat dissipation duct (51) is connected to the air inlet of the first fan (31) through the vent (11), and the smoke inlet (21) is connected to the air inlets of the first fan (31) and the second fan (32).

3. The refrigerated range hood according to claim 1, characterized in that: The first fan (31) and the second fan (32) are both centrifugal fans with a double air intake structure, or both are centrifugal fans with a single air intake structure, or one of them is a centrifugal fan with a single air intake structure and the other is a centrifugal fan with a double air intake structure.

4. The refrigerated range hood according to claim 3, characterized in that: The first fan (31) and the second fan (32) are both vertically arranged. The impeller center axis of the first fan (31) and the impeller center axis of the second fan (32) are on the same straight line and perpendicular to the left and right side walls of the fan frame (1). The ventilation port (11) is located on the side wall of the fan frame (1) opposite to the air inlet of the first fan (31).

5. The refrigerated range hood according to claim 1, characterized in that: The smoke inlet (21) is equipped with a smoke baffle (22). In the mode where only the air conditioner is on, the smoke baffle (22) is closed, and in the mode where the range hood is on, the smoke baffle (22) is open.

6. The refrigerated range hood according to claim 5, characterized in that: The valve plate (7) is an electric valve plate, and the valve plate (7) and the smoke baffle (22) can be linked together under the control of the controller.

7. The refrigerated range hood according to claim 1, characterized in that: The heat dissipation module (5) includes a condenser (52), the indoor unit module (6) includes an evaporator (61) and an indoor unit fan (62), and the compressor (4), condenser (52) and evaporator (61) are connected by a refrigerant pipeline (9).

8. The refrigerated range hood according to claim 7, characterized in that: The heat dissipation module (5) has a heat dissipation air inlet (53), and a heat dissipation air duct (51) is formed between the heat dissipation air inlet (53) and the ventilation port (11). The compressor (4) and the condenser (52) are located in the heat dissipation air duct (51).

9. The refrigerated range hood according to claim 8, characterized in that: Along the direction of airflow, the condenser (52) is located upstream of the compressor (4).

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