Condenser of refrigeration extractor hood and refrigeration extractor hood

Abstract

The condenser comprises a main body capable of conducting heat and a refrigerant channel arranged on the main body, the main body is in the shape of a hollow pipeline through which oil fume can pass, and the refrigerant channel is formed in the wall of the main body; the value range of the superficial area of the side, facing oil smoke, of the main body and configured for the unit milliliter volume of the refrigerant channel is 2.5 mm2-4 mm2. Compared with the prior art, the condenser has the advantages that the whole condenser is in a pipeline shape, heat dissipation can be conducted in the condenser through oil smoke passing through the interior of the pipeline, the heat transfer path between the refrigerant channel and the oil smoke for heat dissipation is short, and therefore a refrigerant flowing in the pipe wall of the condenser can be fully dissipated; and the ratio of the total volume of the refrigerant channel to the surface area of the main body is reasonably set, so that the refrigerant has enough unit heat dissipation area in a limited space, a better heat dissipation effect is obtained, and the refrigeration effect is further improved.

Description

Technical Field

[0001] The utility model relates to a refrigeration device, in particular to a condenser of a refrigeration range hood and a refrigeration range hood using the condenser. 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, a range hood with a refrigeration function has been disclosed in the prior art, which can blow out cold air from the housing of the range hood to cool down the kitchen. For example, a Chinese patent with application number 201810525673.7 discloses an air-conditioning range hood, in which the fume assembly of the air-conditioning range hood includes an oil fume channel; the air-conditioning assembly includes a condenser assembly, and the condenser assembly includes a condensation air inlet and a condensation air outlet, the condensation air outlet is connected to the oil fume channel, and the condensation air inlet is independent of the oil fume channel. However, the arrangement of this condenser uses the main fan for oil fume extraction to dissipate heat, which reduces the amount of oil fume sucked and exhausted, affecting the oil fume extraction effect.

[0004] There is also a kitchen air conditioner disclosed in a Chinese patent with application number 202110029969.1, which includes an air conditioning component and a range hood component. The air conditioning component includes a compressor, a condenser, a throttling element, and an evaporator. The range hood component includes an exhaust duct and a exhaust fan in the exhaust duct. The condenser is arranged around the outer wall of the exhaust duct.

[0005] This type of kitchen air conditioner can use oil smoke to dissipate heat from the condenser without the need for additional power. However, since the condenser is wrapped around the exhaust pipe, it is usually not possible to ensure that the condenser can be completely close to the exhaust pipe when it is wrapped, resulting in an air gap layer; and the oil smoke needs to pass through the heat-conducting smoke pipe to exchange heat with the pipe wall of the condenser, and the long heat exchange path will lead to low heat exchange efficiency. In addition, the condenser only dissipates heat through the oil smoke, and most of the oil smoke does not contact the condenser when passing through the condenser, and cannot drive the heat of the condenser, resulting in low heat exchange efficiency. The poor heat dissipation effect of the condenser will directly affect the cooling effect of the range hood air conditioner, so it needs further improvement. Utility Model Content

[0006] The first technical problem to be solved by the present invention is to provide a condenser for a refrigeration range hood in view of the deficiencies in the above-mentioned prior art, which can improve the heat exchange efficiency.

[0007] The second technical problem to be solved by the utility model is to provide a refrigeration range hood using the above condenser.

[0008] The technical solution adopted by the utility model to solve the first technical problem is: a condenser of a refrigeration range hood, characterized in that:

[0009] The condenser comprises a main body capable of conducting heat and a refrigerant channel arranged on the main body, the main body is in the shape of a hollow pipe through which oil smoke can pass, and the refrigerant channel is formed inside the wall of the main body;

[0010] The range of the surface area of ​​the main body facing the oil smoke configured per unit milliliter volume of the refrigerant channel is 2.5mm 2 ~4mm 2 .

[0011] By making the condenser as a whole in the shape of a pipe, the heat inside the condenser can be dissipated through the oil smoke passing through the inside of the pipe, and the heat transfer path between the refrigerant channel and the heat-dissipating oil smoke is short, so that the refrigerant flowing inside the condenser tube wall can be fully dissipated. By reasonably setting the ratio of the total volume of the refrigerant channel to the surface area of ​​the main body, the refrigerant can have sufficient unit heat dissipation area within a limited space, thereby obtaining a better heat dissipation effect, thereby improving the refrigeration effect.

[0012] Preferably, the refrigerant channel has a refrigerant inlet and a refrigerant outlet, and the refrigerant channel includes at least three vertically extending first channels, a second channel connected between the upper ends of two adjacent first channels, and a third channel connected between the lower ends of two adjacent first channels, and the second channel and the third channel extend in opposite directions at both ends of the same first channel.

[0013] According to one aspect of the utility model, the main body is cylindrical, the refrigerant channels have three, and the surface area of ​​the main body facing the oil smoke configured per unit milliliter volume of the refrigerant channel is in the range of 2.7 mm 2 ~3.3mm 2 .

[0014] According to another aspect of the utility model, the main body includes an integrated first part and a second part, the first part is a rectangular parallelepiped, the second part is spiral, the second part is located inside the space surrounded by the first part, and the second part extends inward from the wall surface of the first part.

[0015] Preferably, there are three refrigerant channels, and the three refrigerant channels share a refrigerant inlet and a refrigerant outlet. The range of the surface area of ​​the main body facing the oil smoke configured per unit milliliter volume of the refrigerant channel is 3.2 mm 2 ~3.9mm 2 .

[0016] Preferably, in order to avoid mutual influence between adjacent refrigerant channels, the spacing between adjacent refrigerant channels is d1, which is the dimension along the height direction of the main body, and the value range of d1 is 6 to 10 mm.

[0017] Preferably, in order to prevent the high-temperature refrigerant flowing into the refrigerant inlet from raising the temperature of the lower-temperature refrigerant flowing out of the refrigerant outlet, the minimum spacing between the refrigerant channel adjacent to the refrigerant inlet and the refrigerant channel adjacent to the refrigerant outlet is d2, which is the dimension along the height direction of the main body, and the value range of d2 is 50 to 60 mm.

[0018] Preferably, in order to prevent the high-temperature refrigerant flowing into the refrigerant inlet from raising the temperature of the lower-temperature refrigerant flowing out of the refrigerant outlet, the distance between the refrigerant inlet and the refrigerant outlet along the height direction of the main body is d3, the overall height of the main body is d4, and the value range of d3 / d4 is 0.56 to 0.68.

[0019] The first technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a refrigeration range hood, including a fume suction component and a refrigeration component, characterized in that: the refrigeration component includes the condenser as described above, and the condenser is arranged downstream of the fume suction component along the fume flow path.

[0020] Furthermore, the refrigeration component is arranged on the oil fume suction component, thereby making it easy to install the refrigeration component and also reducing the space occupied on both sides of the oil fume suction component.

[0021] Compared with the prior art, the advantages of the utility model are: by making the condenser as a whole in the shape of a pipe, the heat inside the condenser can be dissipated through the oil smoke passing through the inside of the pipe, and the heat transfer path between the refrigerant channel and the heat-dissipating oil smoke is short, so that the refrigerant flowing inside the condenser tube wall can be fully dissipated. By reasonably setting the ratio of the total volume of the refrigerant channel to the surface area of ​​the main body, the refrigerant can have sufficient unit heat dissipation area within a limited space, thereby obtaining a better heat dissipation effect, thereby improving the refrigeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a range hood according to a first embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the range hood of the first embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the range hood of the first embodiment of the utility model, in which the range hood assembly and the refrigeration assembly respectively hide part of the housing;

[0025] Figure 4 It is a cross-sectional view of a refrigeration assembly of a range hood according to the first embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of a condenser of a refrigeration assembly of a range hood according to a first embodiment of the utility model;

[0027] Figure 6 It is a cross-sectional view of a condenser of a refrigeration assembly of a range hood according to a first embodiment of the utility model;

[0028] Figure 7 for Figure 6 A partial enlarged schematic diagram of Ⅰ;

[0029] Figure 8 A schematic diagram of a condenser of a refrigeration assembly of a range hood according to a second embodiment of the utility model;

[0030] Fig. 9 It is a schematic diagram of the expansion of the condenser of the refrigeration assembly of the range hood according to the second embodiment of the utility model;

[0031] Fig.10 A schematic diagram of a condenser of a refrigeration assembly of a range hood according to a third embodiment of the utility model;

[0032] Fig.11 It is a schematic diagram of the expansion of the condenser of the refrigeration assembly of the range hood according to the third embodiment of the utility model. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present utility model, it should be understood that the terms "center", "vertical", "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.

[0035] Embodiment 1

[0036] See also Figure 1 to Figure 7 A refrigeration range hood includes a range hood assembly and a refrigeration assembly, wherein the range hood assembly includes a first shell 11 and a main fan 12 disposed in the first shell 11. In this embodiment, the range hood assembly is in the form of a commonly used side-suction range hood. Optionally, it can be any form of existing top suction, low suction, ceiling type, etc. The first shell 11 can be a combination of one or more shells.

[0037] The oil fume suction component and the refrigeration component constitute independent modules respectively. When installed, the refrigeration component is mounted on the oil fume suction component, so that the refrigeration component does not occupy the left and right sides of the first shell 11 of the oil fume suction component, which can avoid the fan frame (part of the first shell 11) used to set the main fan 12 from being offset and affecting its own oil fume suction effect. Moreover, the two modules are installed independently, which can meet the needs of both new decoration users and old users who are changing their decoration.

[0038] The refrigeration assembly includes a second shell 21, a compressor 22, an evaporator 23, a condenser 24 and a cooling fan 25, wherein the second shell 21 is arranged on the first shell 11, wherein the compressor 22, the evaporator 23, the condenser 24 and the cooling fan 25 can be arranged in the second shell 21, and a refrigerant passage is formed between the compressor 22, the evaporator 23 and the condenser 24. The working principle of the refrigeration assembly is the same as the prior art.

[0039] A cold air outlet 211 is provided on the front side of the second housing 21, such as near the top. The evaporator 23 can be arranged near the cold air outlet 211. The cold air after heat exchange in the evaporator 23 is blown out from the cold air outlet 211 into the kitchen through the cooling fan 25 to provide a comfortable cooking environment temperature for the user. Air inlets 212 are provided on other sides of the second housing 21, such as the left and right sides, to replenish air (room temperature air) into the second housing 21.

[0040] The second housing 21 is provided with a partition 26, thereby dividing the second housing 21 into a first chamber 213 and a second chamber 214, and the two chambers are isolated from each other. The first chamber 213 is a cold chamber, and the evaporator 23 is arranged in the first chamber 213, and the second chamber 214 is a hot chamber, and the compressor 22 and the condenser 24 are arranged in the second chamber 214.

[0041] The condenser 24 includes a main body 241 and a refrigerant channel 242. The main body 241 is in the shape of a hollow pipe, preferably a cylindrical shape. The refrigerant channel 242 is formed inside the wall of the main body 241. The refrigerant channel 242 can be spiral or parallel reflux. The wall of the main body 241 includes two layers of heat conducting plates 2411. The refrigerant channel 242 is formed between the two layers of heat conducting plates 2411. The two layers of heat conducting plates 2411 have a gap only at the position where the refrigerant channel 242 is formed, and the other parts are all fitted (the gaps in the parts outside the refrigerant channel 242 caused by processing problems, such as bubbles, should be regarded as a situation without gaps). Optionally, the heat conducting plate 2411 is a metal plate, such as an aluminum plate, which is preferably a two-piece rectangular aluminum plate. Two pieces of aluminum plates are hot-rolled and pressed, and the two pieces of aluminum plates are inflated to form the above-mentioned refrigerant channel 242, and then the whole is rolled into a desired shape. After hot rolling, the refrigerant in the refrigerant channel 242 can withstand a pressure of up to 2.3 MPa, and there is zero gap contact between the refrigerant and the heat-conducting material, and the heat exchange efficiency is extremely high, so the surface temperature of the condenser under natural conditions is not higher than 50° C. 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.

[0042] On the oil fume flow path, the condenser 24 is arranged downstream of the main fan 12. It can be directly connected to the air outlet of the main fan 12, or connected to the main fan 12 through the air outlet cover 13, or connected to the smoke exhaust duct (not shown) as a part of the smoke exhaust duct. That is, the space surrounded by the heat conducting plate 2411 of the inner layer of the main body 241 constitutes a smoke exhaust channel 2412 for the oil fume exhausted by the main fan 12 to pass through before reaching the public flue or being discharged into the room. The inner wall surface of the inner heat conducting plate 2411 (i.e. the inner wall surface of the main body 241) and the outer wall surface of the outer heat conducting plate 2411 (i.e. the outer wall surface of the main body 241) both constitute heat dissipation surfaces. The inner heat dissipation surface dissipates heat through the oil fume passing through the smoke exhaust channel 2412, and the outer heat dissipation surface contacts the room temperature air entering the second shell 21 from the kitchen indoor environment during operation, and can also achieve a certain degree of heat dissipation. The room temperature air constitutes a heat dissipation fluid.

[0043] The value range of the surface area of ​​the main body 241 facing the oil smoke configured by the unit milliliter volume of the refrigerant channel 242 is 2.5mm 2 ~4mm 2, thereby, the refrigerant can have enough unit heat dissipation area in a limited space to obtain a better heat dissipation effect. In this embodiment, the main body 241 is arranged vertically, especially vertically, and the refrigerant channel 242 is in a vertical parallel reflux shape. The refrigerant channel 242 has a refrigerant inlet 2421 and a refrigerant outlet 2422, and the number of the refrigerant channel 242 is 1. The refrigerant channel 242 includes at least three vertically extending first channels 2423, a second channel 2424 connected between the upper ends of two adjacent first channels 2423, and a third channel 2425 connected between the lower ends of two adjacent first channels 2423. The second channel 2424 and the third channel 2425 are arranged in a staggered manner, that is, the second channel 2424 and the third channel 2425 extend in opposite directions at both ends of the same first channel 2423, the second channel 2424 extends in the direction of one of the adjacent first channels 2423, and the third channel 2425 extends in the direction of the other adjacent first channel 2423 of the first channel 2423. The second channel 2424 is in a curved shape that bulges upward, preferably in an arc shape, and the third channel 2425 is in a curved shape that bulges downward, preferably also in an arc shape.

[0044] Embodiment 2

[0045] See also Figure 8 and 9 In the embodiment, the difference from the above-mentioned embodiment 1 is that the number of the refrigerant channels 242 is 3, and each refrigerant channel 242 shares the same refrigerant inlet 2421 and refrigerant outlet 2422. The value range of the surface area of ​​the main body 241 facing the oil smoke configured per unit milliliter volume of the refrigerant channel 242 is 2.7mm 2 ~3.3mm 2 .

[0046] The number of the refrigerant channels 242 may also be 2 or greater than 3.

[0047] Embodiment 3

[0048] See also Fig.10 and 11 In the embodiment, the difference from the above-mentioned embodiment 1 is that the main body 241 includes an integrated first part 2413 and a second part 2414, wherein the first part 2413 is a rectangular parallelepiped and the second part 2414 is a spiral, and the second part 2414 is located inside the space enclosed by the first part 2413, and the second part 2414 extends inward from the wall surface of the first part 2413.

[0049] On the basis of the two heat conducting plates 2411 formed by hot rolling, a part is first rolled into a spiral shape to obtain the second part 2414, and then the remaining plate is rolled into a cuboid, and the joint seams are welded.

[0050] The bottom of the main body 241 is formed with a flange 243 bent outward, which is used to be fixed to the top of the first shell 11 and directly connected to the air outlet of the fan 12. The flange 243 can be fixed to the first shell 11 by screws. As a result, the heat of the main body 241 can be transferred to the first shell 11 with a larger heat dissipation area and the metal connecting parts such as the volute of the fan 12 by heat conduction, which is equivalent to a wider heat transfer area under the action of airflow and a better heat dissipation effect. In order to ensure that the heat of the main body 241 is better transferred to the first shell 11, thermal conductive glue can be applied to the flange 243 of the condenser 24 and the first shell 11. This can improve heat transfer and make the connection better sealed after assembly and extrusion to prevent oil smoke leakage.

[0051] The upper end of the main body 241 can be connected to a circular smoke exhaust duct (not shown) through a square-to-circular adapter (not shown), and the adapter is similar to an inverted air outlet hood commonly used in the art.

[0052] The refrigerant inlet 2421 is located above the refrigerant outlet 2422. The portion of the refrigerant channel 242 connected to the refrigerant inlet 2421 is in a vertical parallel reflux shape, and the portion of the refrigerant channel 242 connected to the refrigerant outlet 2421 is extended horizontally, which can be obtained by bending downward at the end away from the refrigerant inlet 2421 and then extending horizontally toward the refrigerant outlet 2421. The value range of the surface area of ​​the refrigerant channel 242 configured per unit milliliter volume on the side of the main body 241 facing the oil smoke is 3.2mm 2 ~3.9mm 2 . Since there are three refrigerant channels 242, in order to eliminate the influence between adjacent refrigerant channels 242, the spacing between adjacent refrigerant channels 242 is d1, and the value range of d1 is 6 to 10 mm. The vertical minimum spacing between the vertical parallel return refrigerant channels 242 and the horizontally extending refrigerant channels 242 is d2, and the value range of d2 is 50 to 60 mm, which can prevent the high-temperature refrigerant flowing into the refrigerant inlet 2421 from raising the temperature of the lower-temperature refrigerant flowing out of the refrigerant outlet 2422.

[0053] The vertical distance between the refrigerant inlet 2421 and the refrigerant outlet 2422 is d3, the overall height of the main body 241 is d4, and the value range of d3 / d4 is 0.56~0.68, so that within a limited height, a sufficient distance is maintained between the refrigerant inlet 2421 and the refrigerant outlet 2422, further avoiding the high-temperature refrigerant flowing into the refrigerant inlet 2421 from raising the temperature of the lower-temperature refrigerant flowing out of the refrigerant outlet 2422.

[0054] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination thereof.

Claims

1. A condenser for a refrigeration range hood, characterized in that: The condenser comprises a main body (241) capable of conducting heat and a refrigerant channel (242) arranged on the main body (241); the main body (241) is in the shape of a hollow pipe through which oil smoke can pass; and the refrigerant channel (242) is formed inside a wall portion of the main body; The value range of the surface area of ​​the cooling medium channel (242) configured per unit milliliter volume and the main body (241) facing the oil smoke is 2.5 mm 2 ~4mm 2 .

2. The condenser of the refrigeration range hood according to claim 1, characterized in that: The refrigerant channel (242) has a refrigerant inlet (2421) and a refrigerant outlet (2422), and the refrigerant channel (242) includes at least three vertically extending first channels (2423), a second channel (2424) connected between the upper ends of two adjacent first channels (2423), and a third channel (2425) connected between the lower ends of two adjacent first channels (2423), and the second channel (2424) and the third channel (2425) extend in opposite directions at both ends of the same first channel (2423).

3. The condenser of the refrigeration range hood according to claim 2, characterized in that: The main body (241) is cylindrical, and has three refrigerant channels (242). The surface area of ​​the refrigerant channel (242) configured per unit milliliter of volume and facing the side of the main body (241) facing the oil smoke is in the range of 2.7 mm 2 ~3.3mm 2 .

4. The condenser of the refrigeration range hood according to claim 2, characterized in that: The main body (241) includes an integrated first part (2413) and a second part (2414), wherein the first part (2413) is a rectangular parallelepiped, and the second part (2414) is spiral-shaped. The second part (2414) is located inside the space enclosed by the first part (2413), and the second part (2414) extends inward from the wall surface of the first part (2413).

5. The condenser of the refrigeration range hood according to claim 4, characterized in that: The refrigerant channels (242) have three refrigerant channels (242), and the three refrigerant channels (242) share a refrigerant inlet (2421) and a refrigerant outlet (2422). The surface area of ​​the refrigerant channel (242) configured per unit milliliter of volume and the main body (241) facing the oil smoke has a value range of 3.2 mm 2 ~3.9mm 2 .

6. The condenser of the refrigeration range hood according to claim 5, characterized in that: The spacing between adjacent refrigerant channels (242) is d1, which is the dimension along the height direction of the main body (241), and the value range of d1 is 6 to 10 mm.

7. The condenser of the refrigeration range hood according to claim 5, characterized in that: The minimum spacing between the refrigerant channel (242) adjacent to the refrigerant inlet (2421) and the refrigerant channel (242) adjacent to the refrigerant outlet (2422) is d2, which is the dimension along the height direction of the main body (241), and the value range of d2 is 50 to 60 mm.

8. The condenser of the refrigeration range hood according to claim 5, characterized in that: The distance between the refrigerant inlet (2421) and the refrigerant outlet (2422) along the height direction of the main body (241) is d3, the overall height of the main body (241) is d4, and the value range of d3 / d4 is 0.56 to 0.

68.

9. A refrigeration range hood, comprising a range hood assembly and a refrigeration assembly, characterized in that: The refrigeration component comprises a condenser as claimed in any one of claims 1 to 8, and the condenser is arranged downstream of the oil fume suction component on the oil fume flow path.

10. The refrigeration range hood according to claim 9, characterized in that: The refrigeration component is arranged on the oil fume suction component.

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