Refrigerated range hood

Abstract

A cooling range hood includes a fan frame and an air inlet located at the bottom of the fan frame. A range hood fan is installed inside the fan frame, while a compressor, a heat dissipation module, and an internal unit module are installed outside the fan frame. The fan frame has ventilation openings, and the air inlet has an air inlet. The range hood fan includes a volute and a dual-shaft motor, a first impeller, and a second impeller located inside the volute. The first impeller is mounted on the first output shaft of the dual-shaft motor, and the second impeller is mounted on the second output shaft of the dual-shaft motor. A valve plate is installed at the ventilation opening to open and close the ventilation opening. This cooling range hood's range hood fan adopts a dual-impeller structure and rotates synchronously under the drive of the dual-shaft motor. After the valve plate is opened, the heat from the heat dissipation module can be discharged into the range hood fan through the ventilation opening and then discharged outwards into the common flue. The large air volume effectively dissipates heat from the condenser. Furthermore, the dual-inlet structure of the range hood fan achieves greater cooling capacity while improving the smoke extraction 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 oil 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 have emerged. However, existing condenser heat dissipation designs in refrigerated range hoods still have several problems. For example, the Chinese invention patent "Kitchen Air Conditioning System" (patent number 201811150307.4, authorization announcement number CN110966676B) installs the condenser in the air outlet 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, the airflow from the range hood contains a large number 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. For example, the Chinese utility model patent with patent number 202420143790.8 (authorization announcement number CN 221881576U), entitled "A Refrigeration Range Hood," involves opening ventilation holes in the volute ring wall of a 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. This refrigeration range hood requires an additional cooling fan, increasing cost and reducing reliability. Furthermore, due to space constraints, cooling fans are generally small, providing limited airflow, which cannot meet the needs of refrigeration range hoods with high cooling capacity. In conclusion, further improvements to existing refrigeration range hoods are needed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cooling range hood with a large heat dissipation air volume and the ability to meet the cooling needs of a large cooling range, in view 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 disposed at the bottom of the fan frame, a range hood fan installed inside the fan frame, a compressor, a heat dissipation module and an internal unit module installed outside the fan frame, a ventilation opening on the fan frame, and an air inlet body having an air inlet, characterized in that: the range hood fan includes a volute and a dual-shaft motor, a first impeller and a second impeller disposed inside the volute, the first impeller being mounted on the first output shaft of the dual-shaft motor, the second impeller being mounted on the second output shaft of the dual-shaft motor, and a valve plate for opening and closing the ventilation opening being installed at the ventilation opening.

[0005] The first impeller and the second impeller can have various structures. Preferably, both the first impeller and the second impeller are centrifugal impellers, and the central axis of the first impeller and the central axis of the second impeller are located on the same straight line and perpendicular to the left and right side walls of the fan frame.

[0006] In order to enable the first and second impellers of the fan to discharge air independently, the exhaust fan is equipped with an exhaust hood. The lower part of the exhaust hood is divided into a first air inlet and a second air inlet by a partition. The first air inlet is connected to the air outlet of the first impeller, and the second air inlet is connected to the air outlet of the second impeller.

[0007] In order to form a dual air intake structure for the range hood, preferably, the air intake of the first impeller constitutes the first air intake of the range hood, and the air intake of the second impeller constitutes the second air intake of the range hood.

[0008] To facilitate the heat dissipation module's heat entering the first air inlet smoothly, the ventilation opening is located on the fan frame side plate opposite to the first air inlet.

[0009] In order to exhaust the heat from the condenser into the range hood through the vent, the heat dissipation module has a heat dissipation duct with a heat dissipation air inlet. The condenser is installed inside the heat dissipation duct. When the vent is open, the heat dissipation duct is connected to the first air inlet of the range hood through the vent.

[0010] The condenser can have various different structures. Preferably, the condenser is located at the top of the heat dissipation duct. The condenser includes a first condenser and a second condenser. The heat dissipation air inlet includes a first heat dissipation air inlet and a second heat dissipation air inlet. The first heat dissipation air inlet faces the first condenser, and the second heat dissipation air inlet faces the second condenser.

[0011] In order to enable the range hood to dissipate the heat generated by the compressor, the compressor is located inside the heat dissipation duct and below the condenser.

[0012] In a further preferred embodiment, the indoor unit module includes an evaporator and an indoor unit fan, the compressor, condenser and evaporator are connected by a refrigerant pipeline, and the indoor unit module has an indoor unit air inlet and an indoor unit air outlet.

[0013] In order to achieve intelligent control of the movement of the smoke baffle and the valve plate, a smoke baffle is installed at the air inlet, and the smoke baffle and the valve plate can be linked together under the control of the controller.

[0014] Compared with the prior art, the advantages of this utility model are as follows: The exhaust fan of this refrigerated range hood adopts a double impeller structure and rotates synchronously under the drive of a dual-shaft motor, forming a double air intake structure. By setting vents and valve plates on the fan frame, after the valve plates are opened, the heat of the heat dissipation module can be discharged into the exhaust fan through the vents and then discharged outward into the common flue. The heat dissipation air volume is large, which realizes the effective heat dissipation of the condenser. Moreover, after the exhaust fan adopts a double air intake structure, it can improve the exhaust effect while achieving a larger cooling capacity. 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;

[0016] Figure 2 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model (with the smoke baffle slightly open);

[0017] Figure 3 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model (with the smoke baffle fully open);

[0018] Figure 4 This is a schematic diagram of the installation structure of the indoor unit module 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 range hood in single-air conditioning mode according to an embodiment of the present invention;

[0021] Figure 7 This is another structural schematic diagram of the range hood in single-air conditioning mode according to an embodiment of the present utility model;

[0022] Figure 8 This is a schematic diagram of the range hood in single-operation mode according to an embodiment of the present invention;

[0023] Figure 9 This is a schematic diagram of the range hood in the mode where both the range hood and the air conditioner are on, according to an embodiment of the present invention. 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, and the air inlet 2 has an air inlet 21 with a smoke baffle 22 installed thereon. The above structure is the same as that of existing range hoods and will not be described again here.

[0026] The range hood 3 in this embodiment includes a volute 31 and a dual-shaft motor 32, a first impeller 33, and a second impeller 34 disposed inside the volute 31. The first impeller 33 is mounted on the first output shaft of the dual-shaft motor 32, and the second impeller 34 is mounted on the second output shaft of the dual-shaft motor 32. Both the first impeller 33 and the second impeller 34 are centrifugal impellers, and the central axis of the first impeller 33 and the central axis of the second impeller are located on the same straight line and perpendicular to the left and right side walls of the fan frame 1. The air inlet 21 of the first impeller 33 constitutes the first air inlet 35 of the range hood 3, and the air inlet 21 of the second impeller 34 constitutes the second air inlet 36 of the range hood 3, thus forming a left and right dual air inlet structure for the range hood 3.

[0027] A ventilation opening 11 is provided on the fan frame side plate 12 opposite to the first air inlet 35. A valve plate 7 is installed at the ventilation opening 11 to open and close the ventilation opening 11. The valve plate 7 is an electric valve plate, and the smoke baffle 22 and the valve plate 7 can be linked together under the control of the controller.

[0028] The fan frame 1 is externally equipped with a compressor 4, a heat dissipation module 5, and an indoor unit module 6. The heat dissipation module 5 has a heat dissipation duct 51 with a heat dissipation air inlet. A condenser 52 and the compressor 4 are installed inside the heat dissipation duct 51. The condenser 52 is located at the top of the heat dissipation duct 51, and the compressor 4 is located at the bottom of the heat dissipation duct 51, upstream of the compressor 4 along the airflow direction. In this embodiment, the condenser 52 includes a first condenser 521 and a second condenser 522. The heat dissipation air inlet includes a first heat dissipation air inlet 531 and a second heat dissipation air inlet 532. The first heat dissipation air inlet 531 faces the first condenser 521, and the second heat dissipation air inlet 532 faces the second condenser 522. The first condenser 521 and the second condenser 522 have independent air intakes, resulting in good heat dissipation. Of course, the structure of the condenser 52 is not limited to this embodiment and can also adopt various other different forms.

[0029] In this embodiment, the indoor unit module 6 is located above the fan frame 1 and 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 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, enhancing the user's cooking experience.

[0030] In this embodiment, the exhaust fan 3 is equipped with an exhaust hood 8 at its air outlet. The lower part of the exhaust hood 8 is divided into a first air inlet 81 and a second air inlet 82 by a partition 80. The first air inlet 81 is connected to the air outlet of the first impeller 33, and the second air inlet 82 is connected to the air outlet of the second impeller 34, thereby enabling the first impeller 33 and the second impeller 34 to have independent air outlets.

[0031] like Figure 6 and Figure 7 As shown, in single-operation air conditioning mode, valve plate 7 flips downwards to a horizontal position, vent 11 opens, and condenser 52 is completely separated from the air intake chamber of the range hood. The heat dissipation duct 51 is connected to the first air intake 35 of the range hood 3 through vent 11. Heat from compressor 4 and condenser 52 enters the first air intake 35 of the range hood 3 and is finally exhausted through the exhaust hood 8. At this time, if the baffle 22 is closed, a whistling sound is likely to occur. Therefore, the baffle 22 is slightly open, and some airflow enters the second air intake 36 of the range hood 3 through air intake 21 and is finally exhausted through the exhaust hood 8. Because the size of the range hood 3 is large enough, it can provide a sufficient airflow to the condenser 52, meeting the needs of a high-capacity cooling range hood.

[0032] like Figure 8 As shown, in the single-operation range hood mode, the valve plate 7 flips upward to the vertical position, the vent 11 closes, the smoke baffle 22 opens, and the oil fumes are drawn in through the air inlet 21 and enter through the first air inlet 35 and the second air inlet 36 of the range hood 3. The air volume is large and the oil fume extraction effect is good. At the same time, after the vent 11 is closed, the oil fumes will not pollute the condenser 52.

[0033] like Figure 9 As shown, when both the range hood and air conditioner are on, the valve plate 7 is in a half-open state, the vent 11 is open, and the smoke baffle 22 is open. The heat from the compressor 4 and the condenser 52 enters the first air inlet 35 of the range hood 3 through the vent 11. At the same time, the oily smoke airflow drawn in by the air inlet 21 enters the first air inlet 35 and the second air inlet 36 of the range hood 3. At this time, the oily smoke airflow will not contaminate the condenser 52.

[0034] 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) 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), a ventilation opening (11) is opened on the fan frame (1), and the air inlet (2) has an air inlet (21), characterized in that: The fume extractor (3) includes a volute (31) and a dual-shaft motor (32), a first impeller (33) and a second impeller (34) disposed inside the volute (31). The first impeller (33) is mounted on the first output shaft of the dual-shaft motor (32), and the second impeller (34) is mounted on the second output shaft of the dual-shaft motor (32). A valve plate (7) for opening and closing the vent (11) is installed at the vent (11).

2. The refrigerated range hood according to claim 1, characterized in that: Both the first impeller (33) and the second impeller (34) are centrifugal impellers. Furthermore, the central axis of the first impeller (33) and the central axis of the second impeller are located on the same straight line and perpendicular to the left and right side walls of the fan frame (1).

3. The refrigerated range hood according to claim 2, characterized in that: The exhaust fan (3) is equipped with an exhaust hood (8) at its air outlet. The lower part of the exhaust hood (8) is divided into a first air inlet (81) and a second air inlet (82) by a partition (80). The first air inlet (81) is connected to the air outlet of the first impeller (33), and the second air inlet (82) is connected to the air outlet of the second impeller (34).

4. The refrigerated range hood according to claim 1, characterized in that: The air inlet (21) of the first impeller (33) constitutes the first air inlet (35) of the fume extractor (3), and the air inlet (21) of the second impeller (34) constitutes the second air inlet (36) of the fume extractor (3).

5. The refrigerated range hood according to claim 4, characterized in that: The ventilation opening (11) is located on the fan frame side plate (12) opposite to the first air inlet (35).

6. The refrigerated range hood according to claim 4, characterized in that: The heat dissipation module (5) has a heat dissipation duct (51), the heat dissipation duct (51) has a heat dissipation air inlet, and a condenser (52) is installed inside the heat dissipation duct (51). When the vent (11) is open, the heat dissipation duct (51) is connected to the first air inlet of the fume extractor (3) through the vent (11).

7. The refrigerated range hood according to claim 6, characterized in that: The condenser (52) is located at the top of the heat dissipation duct (51). The condenser (52) includes a first condenser (521) and a second condenser (522). The heat dissipation air inlet includes a first heat dissipation air inlet (531) and a second heat dissipation air inlet (532). The first heat dissipation air inlet (531) faces the first condenser (521), and the second heat dissipation air inlet (532) faces the second condenser (522).

8. The refrigerated range hood according to claim 4, characterized in that: The compressor (4) is located inside the heat dissipation duct (51) and below the condenser (52).

9. The refrigerated range hood according to claim 4, characterized in that: 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 by a refrigerant pipeline (9). The indoor unit module (6) has an indoor unit air inlet and an indoor unit air outlet.

10. The refrigerated range hood according to any one of claims 1 to 9, characterized in that: The air inlet (21) is equipped with a smoke baffle (22), and the smoke baffle (22) and the valve plate (7) can be linked together under the control of the controller.

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