Refrigerated range hood

Abstract

A kind of refrigeration type range hood, fan frame is installed with range hood fan, compressor, heat dissipation module and inner machine module are installed outside fan frame, valve plate is installed at the vent of fan frame, range hood fan includes first fan and second fan parallel to each other, when valve plate is in first position, vent is closed, smoke inlet is connected with the air inlet of first fan and second fan, when valve plate is in second position, vent is opened, heat dissipation air inlet is connected with the air inlet of first fan through vent, smoke inlet is connected with the air inlet of second fan, when valve plate is in third position, smoke inlet is connected with the air inlet of first fan and second fan, heat dissipation air inlet is connected with the air inlet of first fan through vent.This refrigeration type range hood can also dissipate heat to heat dissipation module by first fan when refrigeration mode is opened, it is beneficial to realize greater cooling capacity, first fan can also be used as range hood fan to improve the effect of range hood.

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, cooling-type range hoods have emerged. These devices are based on traditional range hoods, integrating air conditioning components such as compressors, condensers, and evaporators. All components are connected via refrigerant piping. While performing the function of fume extraction, they also regulate the kitchen temperature using an air conditioning system, becoming an important development direction in the current kitchen appliance industry. However, the condenser heat dissipation design of existing cooling-type range hoods still has many technical pain points, making it difficult to balance heat dissipation efficiency, cost control, and long-term reliability. Specific problems are as follows:

[0003] On the one hand, some technical solutions reuse the exhaust duct of the range hood to dissipate heat from the condenser, attempting to eliminate the need for additional heat dissipation components and reduce costs. For example, the Chinese invention patent "Kitchen Air Conditioning System" with 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 range hood to directly blow on the condenser to remove the heat generated by the refrigerant during operation. While this solution eliminates the need for a separate outdoor unit and simplifies the equipment structure, it has a core flaw: the airflow from the range hood contains a large number of oil fume particles, which easily adhere to the condenser surface, causing a sharp decrease in condenser heat dissipation efficiency and even leading to pipe blockage, abnormal refrigerant circulation, and other malfunctions. 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 increases the risk of failure. The filtration efficiency of the electrostatic device cannot reach 100%, and oil residue will still remain on the surface of the condenser after long-term use. Furthermore, the electrostatic device itself requires regular maintenance, which further increases the user's operating costs and workload.

[0004] On the other hand, another technical solution improves the condenser's heat dissipation by adding an independent cooling fan, but it also faces the dual constraints of cost and space. For example, the Chinese utility model patent "A Refrigeration-type Range Hood" (patent number 202420143790.8, authorization announcement number CN 221881576 U) describes a solution where ventilation openings are created on the volute wall of the cooling fan. The cooling fan provides separate airflow to the condenser, and the heated air is then guided into the exhaust duct of the range hood and discharged outdoors. While this solution avoids direct contact between cooking fumes and the condenser, it has significant drawbacks: the additional cooling fan directly increases the hardware cost of the equipment, and the extra moving part reduces the overall operational reliability. Due to the limited installation space inside the range hood, the cooling fan is typically small, providing limited airflow. To meet the condenser's heat dissipation needs, the only way to compensate for insufficient airflow is to increase the condenser's volume and heat exchange area, further increasing the manufacturing cost of the condenser and the overall space occupied by the equipment, which contradicts the trend towards miniaturization and integration of range hoods.

[0005] In summary, existing condenser cooling systems for refrigerated range hoods fail to achieve an effective balance between heat dissipation efficiency, cost control, and reliability. Related technical solutions either pose risks of oil contamination or suffer from excessive costs and space requirements. Furthermore, for refrigerated range hoods requiring high cooling capacity, a large airflow is needed to simultaneously ensure effective smoke extraction; current cooling systems for refrigerated range hoods are ill-suited to meet these demands. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a cooling range hood that does not require a separate cooling fan and can meet the cooling needs of a large cooling capacity range, in light of the above-mentioned existing technology.

[0007] 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, a range hood fan installed inside the fan frame, a compressor, a heat dissipation module, and an indoor unit module installed outside the fan frame, and a ventilation opening on the fan frame. The characteristic feature is that: a valve plate is installed at the ventilation opening, the valve plate has a first position, a second position, and a third position; the range hood fan includes a first fan and a second fan connected in parallel; the range hood has a smoke inlet; and the heat dissipation module has a heat dissipation function. With the valve plate in the first position, the air inlet is closed, and the smoke inlet is connected to the air inlets of the first and second fans. With the valve plate in the second position, the air inlet is open, and the heat dissipation air inlet is connected to the air inlet of the first fan through the air inlet. The smoke inlet is connected to the air inlet of the second fan. With the valve plate in the third position, the smoke inlet is connected to the air inlets of the first and second fans, and the heat dissipation air inlet is connected to the air inlet of the first fan through the air inlet.

[0008] In order to enable the air outlets of the first and second fans to exhaust air through a common exhaust hood, a three-way exhaust hood is installed on the air outlets of the first and second fans. The three-way exhaust hood has a first inlet, a second inlet and an outlet. The first inlet is connected to the air outlet of the first fan and the second outlet is connected to the air outlet of the second fan.

[0009] To prevent backflow between the airflow discharged from the first fan and the airflow discharged from the second fan, the first and second inlets of the three-way air outlet hood are both downward, and the outlet of the three-way air outlet hood is upward, with a check valve installed at the outlet.

[0010] The range hood fan can have a variety of different structures. Preferably, the first fan and the second fan are both centrifugal fans with a dual 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 dual air intake structure.

[0011] The first and second fans can be installed in various ways. Preferably, both the first and second fans are vertically arranged, and 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.

[0012] The ventilation opening is located on the side wall of the fan frame opposite to the air inlet of the first fan.

[0013] The heat dissipation module and the indoor unit module can have various structures. Preferably, the heat dissipation module includes a condenser, the indoor unit module includes an evaporator and an indoor unit fan, the compressor, condenser and evaporator are connected by refrigerant pipelines, a heat dissipation air duct is formed between the heat dissipation air inlet and the vent, and the compressor and condenser are installed in the heat dissipation air duct.

[0014] Preferably, the condenser is located upstream of the compressor, along the direction of airflow.

[0015] To avoid interference between the cooling capacity of the indoor unit module and the heat dissipation module, the indoor unit module is located above the fan frame, and the indoor unit module has an indoor unit air inlet and an indoor unit air outlet.

[0016] In order to enable the smoke baffle and the valve plate to work together, a smoke baffle is installed at the smoke inlet, and the valve plate is an electric valve plate. The electric valve plate and the smoke baffle can work together under the control of the controller.

[0017] Compared with the prior art, the advantages of this utility model are as follows: the exhaust fans of this cooling range hood are a first fan and a second fan connected in parallel, which can provide a larger air volume. In different working modes, the valve plate at the ventilation port of the fan frame has three different positions. When only the cooling mode is turned on, the heat dissipation module can be cooled by the first fan. Since the air volume of the first fan is relatively large, it is conducive to achieving a larger cooling capacity. When both the cooling mode and the exhaust mode are turned on, the first fan can be used as a heat dissipation fan and as an exhaust fan, which can improve the exhaust effect while achieving a larger cooling capacity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model (valve plate in the first position);

[0019] Figure 2 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.

[0020] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0021] Figure 4 for Figure 1 The diagram shows a side view of the range hood.

[0022] Figure 5 for Figure 1 The diagram shows another side view of the range hood.

[0023] Figure 6 This is a connection diagram of the refrigeration system according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model (valve plate is in the second position);

[0025] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the range hood.

[0026] Figure 9 This is a structural cross-sectional view of the range hood according to an embodiment of the present utility model (the valve plate is in the third position). Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 6 As shown, the refrigerated range hood of this embodiment includes a fan frame 1, and a range hood 2 is installed inside the fan frame 1. The range hood 2 of this embodiment includes a first fan 21 and a second fan 22 connected in parallel. The first fan 21 and the second fan 22 have the same or similar performance. In this embodiment, both the first fan 21 and the second fan 22 are centrifugal fans with a double air inlet structure. Both the first fan 21 and the second fan 22 are vertically arranged. The impeller center axis of the first fan 21 and the impeller center axis of the second fan 22 are located on the same straight line and perpendicular to the left and right side walls of the fan frame 1. The air outlets of the first fan 21 and the second fan 22 are equipped with three-way air outlet hoods 8. The three-way air outlet hood 8 has a first inlet 81, a second inlet 82 and an outlet 83. The first inlet 81 is connected to the air outlet of the first fan 21, and the second outlet 83 is connected to the air outlet of the second fan 22. The first inlet 81 and the second inlet 82 of the three-way air outlet hood 8 both face downwards, and the outlet 83 of the three-way air outlet hood 8 faces upwards. A check valve is installed at the outlet 83.

[0029] In addition, the first fan 21 and the second fan 22 can both be centrifugal fans with a single air inlet structure, or one of them can be a centrifugal fan with a single air inlet structure and the other can be a centrifugal fan with a double air inlet structure.

[0030] A compressor 3, a heat dissipation module 4, and an indoor unit module 5 are mounted externally on the fan frame 1. The heat dissipation module 4 includes a heat dissipation air inlet 41 and a condenser 42. The indoor unit module 5 includes an evaporator 51 and an indoor unit fan 52. The compressor 3, condenser 42, and evaporator 51 are connected via refrigerant piping 9. A heat dissipation air duct 43 is formed between the heat dissipation air inlet 41 and the vent 11. The compressor 3 and condenser 42 are installed within the heat dissipation air duct 43, and the condenser 42 is located upstream of the compressor 3 along the airflow direction. The indoor unit module 5 is located above the fan frame 1 and has an indoor unit air inlet and an indoor unit air outlet. In cooling mode, the indoor unit air outlet blows out cool air, enhancing the user's cooking experience.

[0031] A ventilation opening 11 is provided on the fan frame 1, and the ventilation opening 11 is located on the side wall of the fan frame 1 opposite to the air inlet of the first fan 21. A valve plate 6 is installed at the ventilation opening 11. The valve plate 6 has a first position, a second position and a third position. The valve plate 6 is an electric valve plate, and controlling it can control the valve plate 6 to switch between the first position, the second position and the third position.

[0032] The lower part of the range hood has a smoke inlet 7, and a smoke baffle 10 is installed in the smoke inlet 7. The valve plate 6 is an electric valve plate 6. The electric valve plate 6 and the smoke baffle 10 can be linked together under the control of the controller.

[0033] like Figure 3 As shown, when the range hood is turned on, the valve plate 6 is in the first position, the valve plate 6 is in a vertical position, the vent 11 is closed, the smoke baffle 10 is open, and the smoke inlet 7 is connected to the air inlets of the first fan 21 and the second fan 22. The fumes enter the first fan 21 and the second fan 22 from the smoke inlet 7 and are discharged outward. At this time, the working mode is the same as the working mode of a normal range hood. The condenser 42 is completely separated from the air inlets of the first fan 21 and the second fan 22 by the valve plate 6, and the fumes will not pollute the condenser 42.

[0034] like Figure 7 and Figure 8 As shown, when only the air conditioner is on, the smoke baffle 10 is closed, the valve plate 6 is in the second position, the valve plate 6 is in a horizontal position and blocks the smoke inlet 7 and the air inlet of the first fan 21, the vent 11 is open, and the heat dissipation air inlet 41 is connected to the air inlet of the first fan 21 through the vent 11. The heat from the condenser 42 enters the first fan 21 through the vent 11 and is then discharged to the outside through the three-way air outlet hood 8. At this time, it is preferable to only turn on the first fan 21. Since the air volume of the first fan 21 is large enough to provide enough air for the condenser 42 to dissipate heat, the size of the condenser can be reduced, thereby reducing the cost of the condenser. Alternatively, both the first fan 21 and the second fan 22 can be turned on. The simultaneous operation of the first fan 21 and the second fan 22 can obtain a larger air volume. Both the first fan 21 and the second fan 22 dissipate heat for the condenser 42, resulting in better heat dissipation and making it more conducive to achieving large-capacity cooling. At this time, the smoke inlet 7 is always connected to the air inlet of the second fan 22, but the smoke inlet 7 will not draw in oil fumes.

[0035] Figure 9As shown, when the range hood and air conditioner are turned on simultaneously, the valve plate 6 is in the third position, which is located between the first and second positions. The valve plate 6 is inclined relative to the horizontal plane and automatically adjusts its position according to the air volume required by the range hood and the heat dissipation air volume required by the air conditioner condenser. At this time, the smoke inlet 7 is connected to the air inlets of the first fan 21 and the second fan 22, and the fumes entering through the smoke inlet 7 are discharged to the outside through the first fan 21 and the second fan 22. The heat dissipation air inlet 41 is connected to the air inlet of the first fan 21 through the vent 11, and the heat from the condenser 42 is discharged to the outside through the first fan 21. Since the heat dissipation airflow passes through the condenser 42 first and then through the range hood fan 2, the fumes will not pollute the condenser 42. In addition, the first fan 21 in this embodiment can provide air volume for both heat dissipation of the condenser 42 and air volume for fume extraction.

[0036] This 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), wherein a range hood fan (2) is installed inside the fan frame (1), and a compressor (3), a heat dissipation module (4), and an indoor unit module (5) are installed outside the fan frame (1), and a ventilation opening (11) is provided on the fan frame (1), characterized in that: A valve plate (6) is installed at the vent (11). The valve plate (6) has a first position, a second position, and a third position. The range hood (2) includes a first fan (21) and a second fan (22) connected in parallel. The range hood has a smoke inlet (7), and the heat dissipation module (4) has a heat dissipation air inlet (41). When the valve plate (6) is in the first position, the vent (11) is closed. The smoke inlet (7) is connected to the air inlets of the first fan (21) and the second fan (22). When the plate (6) is in the second position, the vent (11) is open, the heat dissipation air inlet (41) is connected to the air inlet of the first fan (21) through the vent (11), and the smoke inlet (7) is connected to the air inlet of the second fan (22). When the valve plate (6) is in the third position, the smoke inlet (7) is connected to the air inlets of the first fan (21) and the second fan (22), and the heat dissipation air inlet (41) is connected to the air inlet of the first fan (21) through the vent (11).

2. The refrigerated range hood according to claim 1, characterized in that: The air outlets of the first fan (21) and the second fan (22) are equipped with three-way air outlet hoods (8). The three-way air outlet hoods (8) have a first inlet (81), a second inlet (82) and an outlet (83). The first inlet (81) is connected to the air outlet of the first fan (21), and the second outlet (83) is connected to the air outlet of the second fan (22).

3. The refrigerated range hood according to claim 2, characterized in that: The first inlet (81) and the second inlet (82) of the three-way air outlet hood (8) both face downwards, and the outlet (83) of the three-way air outlet hood (8) faces upwards. A check valve is installed at the outlet (83).

4. The refrigerated range hood according to claim 1, characterized in that: The first fan (21) and the second fan (22) 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.

5. The refrigerated range hood according to claim 4, characterized in that: The first fan (21) and the second fan (22) are both vertically arranged. The impeller center axis of the first fan (21) and the impeller center axis of the second fan (22) are on the same straight line and perpendicular to the left and right side walls of the fan frame (1).

6. The refrigerated range hood according to claim 1, characterized in that: The ventilation opening (11) is located on the side wall of the fan frame (1) opposite to the air inlet of the first fan (21).

7. The refrigerated range hood according to claim 1, characterized in that: The heat dissipation module (4) includes a condenser (42), the indoor unit module (5) includes an evaporator (51) and an indoor unit fan (52), the compressor (3), the condenser (42) and the evaporator (51) are connected by a refrigerant pipeline (9), a heat dissipation air inlet (41) and a vent (11) form a heat dissipation air duct (43), and the compressor (3) and the condenser (42) are installed in the heat dissipation air duct (43).

8. The refrigerated range hood according to claim 7, characterized in that: Along the direction of airflow, the condenser (42) is located upstream of the compressor (3).

9. The refrigerated range hood according to claim 7, characterized in that: The indoor unit module (5) is located above the fan frame (1), and the indoor unit module (5) has an indoor unit air inlet and an indoor unit air outlet.

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