Fan system and range hood applying same

Abstract

The utility model discloses a fan system and a range hood applying the fan system, the fan system comprises a volute, the volute comprises two cover plates and an annular wall, the two cover plates are arranged at intervals along the axial direction of the fan system, and the annular wall is formed between the two cover plates; the annular wall comprises a refrigerant channel for a refrigerant to pass through, so that the volute forms a condenser at least on the annular wall. Compared with the prior art, the volute has the advantages that the volute forms a condenser structure at least at the position of the annular wall, the design can replace an original volute annular wall structure to increase the heat exchange function, the heat conduction area of the condenser can be directly enlarged (heat conduction is conducted between the volute and the front cover plate and the rear cover plate of the volute), cost is reduced, and meanwhile multiple purposes of the volute annular wall are achieved; and long-term accumulated oil on the volute annular wall can be dissolved by high heat released by a refrigerant pipeline, so that the purpose of melting oil is achieved.

Description

Technical Field

[0001] The utility model relates to a power device, in particular to a fan system and a range hood using the fan system. Background Art

[0002] With the improvement of material living standards, people have higher and higher requirements for kitchen environment. People need to use stoves during cooking, which will generate a lot of heat in the kitchen, causing the temperature of the entire space to rise and the comfort of the environment to decrease. At present, most families use temporary fans to solve this problem. However, this method is not only inconvenient, but also occupies kitchen area.

[0003] For this purpose, there are refrigeration hoods combined with air conditioners. In some refrigeration hoods, the condenser is placed at the front end of the centrifugal fan of the range hood. A part of the air volume is required to be discharged by the condenser to dissipate heat, which will inevitably take away a part of the required air volume for extracting oil fumes, resulting in a decrease in the oil fume extraction effect and smoke leakage. For most refrigeration hoods, the condenser is placed at the rear end of the centrifugal fan. For example, a kitchen air conditioner disclosed in Chinese patent application number 202110029969.1 comprises an air conditioning component and a range hood component, the air conditioning component comprises a compressor, a condenser, a throttling element, and an evaporator, the range hood component comprises an exhaust duct and a exhaust fan in the exhaust duct, and the condenser is arranged around the outer peripheral wall of the exhaust duct. Then, oil fume stains will inevitably contaminate the surface of the condenser, resulting in a decrease in the heat dissipation effect of the condenser, thereby affecting the cooling effect of the air conditioner.

[0004] In addition, there are many platforms for range hood modules installed in conjunction with the air-conditioning module. Some fan racks have low heights, while others have high heights. The installed heights vary, which means that this condenser is only suitable for range hoods with lower fan heights. After installation, the height of the range hood with a higher fan rack will be close to or exceed the ceiling height, making it unsuitable for more range hood product models. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a fan system for the above-mentioned deficiencies in the prior art, so as to realize the diversified functions of the volute and reduce the oil accumulation in the volute.

[0006] The second technical problem to be solved by the utility model is to provide a range hood using the above-mentioned fan system.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a fan system, including a volute, the volute includes two cover plates arranged at intervals along the axial direction of the fan system and an annular wall formed between the two cover plates; it is characterized in that: the annular wall includes a refrigerant channel for refrigerant to pass through, so that the volute is configured as a condenser at least at the annular wall.

[0008] The volute forms a condenser structure at least at the ring wall. This design can not only replace the original volute ring wall structure to increase the heat exchange function, but also directly increase the heat conduction area of ​​the condenser (heat conduction between the front and rear cover plates of the volute), thereby reducing costs and achieving multiple uses of the volute ring wall. Moreover, the long-term accumulated oil on the volute ring wall can be dissolved by the high heat released by the refrigerant pipeline, thereby achieving the purpose of melting the oil.

[0009] Preferably, the annular wall includes a main body, the main body forms a shape of a volute annular wall, and the refrigerant channel is formed inside a wall portion of the main body.

[0010] Preferably, the wall of the main body includes two layers of heat conducting plates, and the coolant channel is formed between the two layers of heat conducting plates, so that the coolant can directly contact the heat conducting plates to dissipate heat, the heat dissipation path is short, and the heat dissipation efficiency is high.

[0011] To facilitate the inflow and outflow of the refrigerant, the refrigerant channel has a refrigerant inlet for the inflow of the refrigerant and a refrigerant outlet for the outflow of the refrigerant.

[0012] In order to make the flow direction of the refrigerant consistent with the flow direction of the airflow so that the heat can be taken away by the airflow as much as possible, the refrigerant channel extends along the circumference of the volute.

[0013] In order to increase the flow of the refrigerant channel and the contact area with the airflow and improve the heat dissipation efficiency, the refrigerant channel has a refrigerant inlet for the refrigerant to flow in and a refrigerant outlet for the refrigerant to flow out. The part of the refrigerant channel between the refrigerant inlet and the refrigerant outlet is in the shape of multiple parallel lines.

[0014] Preferably, the fan system further comprises an impeller disposed in the volute.

[0015] Preferably, the volute is provided with a volute bracket for fixing to the outside.

[0016] The technical solution adopted by the utility model to solve the second technical problem is: a range hood, characterized in that: the fan system as described above is applied.

[0017] In order to form a refrigeration system and construct a refrigerant circulation path, the range hood also includes a compressor and an evaporator that cooperate with the condenser to provide a circulating flow of refrigerant.

[0018] Compared with the prior art, the utility model has the advantages that the volute forms a condenser structure at least at the ring wall. This design can not only replace the original volute ring wall structure to increase the heat exchange function, but also directly increase the heat conduction area of ​​the condenser (heat conduction between the front and rear cover plates of the volute), thereby reducing costs and achieving multiple uses of the volute ring wall. Moreover, the long-term accumulated oil on the volute ring wall can be dissolved by the high heat released by the refrigerant pipeline, thereby achieving the purpose of melting the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a fan system according to an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of the fan system of the embodiment of the utility model (the cross section is a radial plane);

[0021] Figure 3 A schematic diagram of the annular wall of the volute of the fan system according to an embodiment of the utility model;

[0022] Figure 4 A cross-sectional view of the annular wall of the volute of the fan system according to an embodiment of the utility model;

[0023] Figure 5 for Figure 4 An enlarged view of local I. DETAILED DESCRIPTION

[0024] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0026] See also Figure 1 to Figure 4 The invention discloses a fan system, which is a centrifugal fan and can be mainly used in range hoods, and can also be used in other occasions requiring similar power devices.

[0027] The fan system includes a volute 1, an impeller 2 disposed in the volute 1, and a motor (not shown) for driving the impeller 2. The volute 1 includes two cover plates 11 arranged at intervals along the axial direction of the fan system and an annular wall 12 formed between the two cover plates 11, and a flow channel for airflow to pass through is formed between the cover plates 11 and the annular wall 12. The annular wall 12 includes a main body 121 and a refrigerant channel 122, the main body 121 forms the shape of an annular wall, and the refrigerant channel 122 is formed inside the wall of the main body 121. The wall of the main body 121 includes two layers of heat conducting plates 1211, and the refrigerant channel 122 is formed between the two layers of heat conducting plates 1211. The two layers of heat conducting plates 1211 have a gap only at the position where the refrigerant channel 122 is formed, and the other parts are all fitted (the gaps in the parts outside the refrigerant channel 122 due to processing problems, such as bubbles, should be regarded as a situation without gaps). Optionally, the heat conducting plate 1211 is a metal plate, such as an aluminum plate. Two aluminum plates are hot-rolled and formed, and the space between the two aluminum plates is inflated to form the above-mentioned refrigerant channel 122, and then the whole is rolled into a desired shape. After hot rolling, the refrigerant in the refrigerant channel 122 can withstand a pressure of up to 2.3MPa, and there is zero gap contact between the refrigerant and the heat conducting plate 1211, and the heat exchange efficiency is extremely high, so the surface temperature of the condenser is not higher than 50°C under natural conditions. However, in the fin type commonly used in existing air conditioners or the winding type described in the background technology, the refrigerant and the heat conducting material cannot be completely matched without gaps, so the heat transfer is not smooth, resulting in a high temperature of the condenser itself, which in turn affects the overall cooling effect of the refrigeration component.

[0028] The refrigerant channel 122 has a refrigerant inlet 1221 and a refrigerant outlet 1222 . After the refrigerant enters from the refrigerant inlet 1221 , it can be divided into one, two, three, or even more paths, and then merged into one path before flowing out from the refrigerant outlet 1222 , thereby flowing out from the refrigerant outlet 1222 .

[0029] The shape of the refrigerant channel 122 can be as follows: Figure 3 As shown, the refrigerant passages 122 are distributed along the circumference of the volute 1, and are in the shape of multiple parallel arrangements in the portion between the refrigerant inlet 1221 and the refrigerant outlet 1222. Optionally, the refrigerant passages 122 may also be wavy, parallel and reflux shaped, etc. along the circumference.

[0030] Thus, the annular wall 12 of the volute 1 constitutes a condenser, and the range hood further comprises a compressor, an evaporator, a throttle valve, etc., which together with the condenser constitute a refrigeration system. The compressor, the evaporator, and the throttle valve are prior art, and the connection relationship between the condenser and these components, the path of the refrigerant (the refrigerant circulates between the compressor, the condenser, and the evaporator), etc. are also prior art, and will not be described in detail here.

[0031] The volute 1 is fixed to the external fan frame through the volute bracket 3. When the range hood is turned on, the impeller 2 starts, and the oil smoke airflow is sucked into the volute 1 along the motor axis under the action of the impeller 2, and is discharged to the air outlet of the volute 1 along the circumference of the inner wall of the volute under the action of the shear force of the blades. At this time, the refrigeration system works, the annular wall 12 starts to dissipate heat, and the heat is discharged to the outside through the flue under the action of the airflow inside the volute 1.

[0032] The cover plate 11 of the volute 1 may also adopt the structure of the annular wall 12 to further improve the heat dissipation performance.

Claims

1. A fan system, comprising a volute (1), wherein the volute (1) comprises two cover plates (11) arranged at intervals along the axial direction of the fan system and an annular wall (12) formed between the two cover plates (11); characterized in that: The annular wall (12) includes a refrigerant channel (122) for the refrigerant to pass through, so that the volute (1) is configured as a condenser at least at the annular wall (12).

2. The fan system according to claim 1, characterized in that: The annular wall (12) includes a main body (121), the main body (121) forms a shape of a volute annular wall, and the refrigerant channel (122) is formed inside the wall portion of the main body (121).

3. The fan system according to claim 2, characterized in that: The wall portion of the main body (121) includes two layers of heat-conducting plates (1211), and the refrigerant channel (122) is formed between the two layers of heat-conducting plates (1211).

4. The fan system according to claim 2, characterized in that: The refrigerant channel (122) has a refrigerant inlet (1221) for the refrigerant to flow in, and a refrigerant outlet (1222) for the refrigerant to flow out.

5. The fan system according to claim 2, characterized in that: The refrigerant channel (122) extends along the circumference of the volute (1).

6. The fan system according to claim 5, characterized in that: The refrigerant channel (122) has a refrigerant inlet (1221) for the refrigerant to flow in and a refrigerant outlet (1222) for the refrigerant to flow out, and the portion of the refrigerant channel (122) between the refrigerant inlet (1221) and the refrigerant outlet (1222) is in the shape of multiple parallel lines.

7. The fan system according to claim 1, characterized in that: The fan system also includes an impeller arranged in the volute (1).

8. The fan system according to claim 1, characterized in that: The volute (1) is provided with a volute bracket (3) for fixing to the outside.

9. A range hood, characterized in that: A fan system as claimed in any one of claims 1 to 8 is used.

10. The range hood according to claim 9, characterized in that: The range hood also includes a compressor and an evaporator that cooperate with the condenser to provide a circulating flow of refrigerant.

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