Evaporator and range hood

Abstract

The utility model provides an evaporator and a range hood, the evaporator comprises a refrigerant pipe and a plurality of cold dissipation fins, the longitudinal section of each cold dissipation fin is wave-shaped or zigzag, the plurality of cold dissipation fins are arranged along the transverse direction, the refrigerant pipe is inserted in the plurality of cold dissipation fins, and a flue gas channel for flue gas to pass through is formed between two adjacent cold dissipation fins. When oil smoke enters from the smoke channel, the oil smoke is in collision contact with the wave-shaped or sawtooth-shaped cold dissipation fins, heat of the oil smoke is transmitted to the refrigerant pipe from the cold dissipation fins or directly transmitted to the refrigerant pipe, and grease and water are cooled and condensed on the cold dissipation fins. The intercepted grease and water slide down to the bottoms of the cold dissipation fins along the surfaces of the wavy or zigzag cold dissipation fins and then leave the evaporator. Therefore, the wave-shaped or sawtooth-shaped cold dissipation fins can play a role in intercepting and discharging grease and water, so that residues of the grease and the water on the surfaces of the refrigerant pipes and the surfaces of the cold dissipation fins can be reduced, and the cleaning frequency of the evaporator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an evaporator and a range hood. Background Art

[0002] The oil stains adsorbed by the electric field on the inner wall surface of the traditional oil fume removal device are not easy to clean, which affects the adsorption of oil fume particles after long-term use and reduces the oil fume removal effect. In addition, the previous oil fume removal device does not have a pre-treatment function. When the oil fume temperature is too high, the purification effect is not ideal, and it is easy to cause damage to the honeycomb electrode in the oil fume removal device. In order to solve the problem that the purification effect is not ideal when the oil fume temperature is too high, various refrigeration range hoods are disclosed in the prior art. On the basis of the range hood platform, an air conditioning component is added. The compressor, condenser and evaporator are connected through a refrigerant pipeline. The refrigeration range hood can realize all the functions of the range hood and the function of the air conditioner, cool down the high-temperature oil fume, and then purify the oil fume after cooling, with a better treatment effect.

[0003] However, although the evaporator of this type of refrigeration range hood can cool down high-temperature oil smoke, it cannot prevent grease and moisture from passing through. As a result, after long-term use, grease and moisture remain on the surface of the evaporator, and it needs to be cleaned frequently to ensure the effect of cooling the oil smoke. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an evaporator, which can reduce the amount of grease and water remaining on the surface of the evaporator, thereby reducing the cleaning frequency of the evaporator.

[0005] The technical solution of the utility model is achieved in this way:

[0006] An evaporator comprises a refrigerant pipe and a plurality of cooling fins, wherein the longitudinal section of the cooling fin is wavy or sawtooth-shaped, a refrigerant inlet is arranged at one end of the refrigerant pipe, and a refrigerant outlet is arranged at the other end, the plurality of cooling fins are arranged in a transverse direction, the refrigerant pipe is inserted among the plurality of cooling fins, and a smoke passage for smoke to pass through is formed between two adjacent cooling fins.

[0007] Preferably, the cross section of the cooling fin is wavy or sawtooth-shaped.

[0008] Preferably, the cooling fins are arranged obliquely relative to the refrigerant pipes.

[0009] Preferably, the inclination angle of the cooling fins is 5 to 15°.

[0010] Preferably, the refrigerant pipe has a serpentine structure.

[0011] Preferably, the refrigerant inlet is located at the upper end of the serpentine refrigerant tube, and the refrigerant outlet is located at the lower end of the serpentine refrigerant tube.

[0012] Preferably, there are multiple refrigerant pipes, and the multiple refrigerant pipes are arranged on the same horizontal plane.

[0013] Preferably, it also includes a protection frame, an upper mesh plate and a lower mesh plate, which are respectively installed on the top and bottom of the protection frame, and the protection frame, the upper mesh plate and the lower mesh plate are enclosed to form a accommodating cavity, and the refrigerant pipe and a plurality of cooling fins are all installed in the accommodating cavity. The oil smoke enters the accommodating cavity from the mesh holes of the lower mesh plate, passes through the smoke channel, and leaves the accommodating cavity from the mesh holes of the upper mesh plate.

[0014] A range hood comprises any one of the above evaporators, wherein the evaporator is arranged at the oil fume inlet of the housing of the range hood.

[0015] Preferably, the evaporator is arranged inclined relative to the horizontal plane.

[0016] Compared with the prior art, the utility model has the following beneficial effects: by setting a plurality of cooling fins with wavy or zigzag longitudinal sections, the refrigerant pipe passes through the plurality of cooling fins, and a smoke channel for smoke to pass through is formed between two adjacent cooling fins. When the oil smoke enters from the smoke channel, the oil smoke collides and contacts with the wavy or zigzag cooling fins, and the heat of the oil smoke is transferred from the cooling fins to the refrigerant pipe or directly to the refrigerant pipe. The grease and moisture are cooled and condensed on the cooling fins, so that the wavy or zigzag cooling fins can intercept grease and moisture. The intercepted grease and moisture slide along the surface of the wavy or zigzag cooling fins to the bottom of the cooling fins, and then leave the evaporator. Therefore, the wavy or zigzag cooling fins can intercept and discharge grease and moisture, thereby reducing the grease and moisture remaining on the surface of the refrigerant pipe and the surface of the cooling fins, thereby reducing the cleaning frequency of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of the evaporator in the first embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the evaporator in the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the range hood in the first embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the evaporator in the second embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the evaporator in the third embodiment of the present utility model.

[0022] Figure ID:

[0023] 1-evaporator; 11-refrigerant pipe; 12-cooling fins; 13-smoke channel; 14-protection frame; 15-upper mesh plate; 16-lower mesh plate; 17-accommodating chamber; 2-shell; 21-oil fume inlet; a-vertical surface. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present utility model. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment 1

[0027] See also Figure 1 The present embodiment provides an evaporator 1, including a refrigerant pipe 11 and a plurality of cooling fins 12 with a wavy longitudinal cross-section. A refrigerant inlet 111 is provided at one end of the refrigerant pipe 1, and a refrigerant outlet 112 is provided at the other end. The plurality of cooling fins 12 are arranged in a transverse direction, and the refrigerant pipe 11 is inserted into the plurality of cooling fins 12. A smoke passage 13 for smoke to pass through is formed between two adjacent cooling fins 12.

[0028] By providing a plurality of cooling fins 12 with wavy longitudinal sections, the refrigerant pipe 11 passes through the plurality of cooling fins 12, and a smoke channel 13 for smoke to pass through is formed between two adjacent cooling fins 12. When the oil smoke enters from the smoke channel 13, the oil smoke collides with the wavy cooling fins 12, and the heat of the oil smoke is transferred from the cooling fins 12 to the refrigerant pipe 11 or directly to the refrigerant pipe 11, and the grease and moisture are cooled and condensed on the cooling fins 12, so that the wavy cooling fins 12 play a role in intercepting grease and moisture. The intercepted grease and moisture slide along the surface of the wavy cooling fins 12 to the bottom of the cooling fins 12, and then leave the evaporator 1. Therefore, the wavy cooling fins 12 can intercept and discharge grease and moisture, thereby reducing the grease and moisture remaining on the surface of the refrigerant pipe 11 and the surface of the cooling fins 12, thereby reducing the cleaning frequency of the evaporator 1. In this embodiment, oil smoke enters from the lower end of the smoke channel 13 and is discharged from the upper end of the smoke channel 13; the refrigerant enters the refrigerant pipe 11 from the refrigerant inlet 111 in liquid form, absorbs heat and evaporates into gas, and then flows out from the refrigerant outlet 112.

[0029] Preferably, the cross section of the cooling fins 12 is wavy, which can increase the number of collisions between the oil smoke and the cooling fins 12, thereby improving the effect of intercepting grease and moisture.

[0030] Preferably, the refrigerant pipe 11 is a serpentine structure, so that the contact area between the single refrigerant pipe 11 and the cooling fins 12 is larger, which is beneficial to accelerate the heat transfer between the refrigerant pipe 11 and the cooling fins 12.

[0031] Furthermore, the refrigerant inlet 111 is located at the upper end of the serpentine refrigerant tube 11, and the refrigerant outlet 112 is located at the lower end of the serpentine refrigerant tube 11. The refrigerant flows from top to bottom in the refrigerant tube 11, while the oil smoke flows from bottom to top. The flow directions of the refrigerant and the oil smoke are opposite. During countercurrent heat transfer, the temperature difference between the cold and hot fluids is the largest, and the maximum heat exchange effect can be achieved. The problem of insufficient heat exchange caused by the temperature cross point being too low or too high can be avoided, ensuring that heat can be effectively transferred during the entire heat exchange process. In addition, this countercurrent heat transfer setting can make the temperature distribution of the heat transfer surface more uniform, which helps to reduce thermal stress or heat loss caused by uneven temperature distribution.

[0032] Preferably, there are multiple refrigerant pipes 11, and the multiple refrigerant pipes 11 are arranged on the same horizontal plane. Each refrigerant pipe 11 has a refrigerant inlet 111 and a refrigerant outlet 112. The multiple inlets and outlets of refrigerant can not only improve the condensation effect of the evaporator 1 on oil and moisture, but also the refrigerant pipes 11 are independent of each other and easy to maintain.

[0033] Preferably, Figure 2As shown, the evaporator 1 also includes a protection frame 14, an upper mesh plate 15 and a lower mesh plate 16. The upper mesh plate 15 and the lower mesh plate 16 are respectively installed on the top and bottom of the protection frame 14. The protection frame 14, the upper mesh plate 15 and the lower mesh plate 16 enclose a receiving cavity 17. The refrigerant pipe 11 and a plurality of cooling fins 12 are all installed in the receiving cavity 17. The oil smoke enters the receiving cavity 17 from the mesh holes of the lower mesh plate 16, passes through the smoke channel 13, and leaves the receiving cavity 17 from the mesh holes of the upper mesh plate 15. The protection frame 14 can prevent the refrigerant pipe 11 and the cooling fins 12 from being bumped, and play a role in protecting the refrigerant pipe 11 and the cooling fins 12; the protection frame 14, the upper mesh plate 15 and the lower mesh plate 16 are enclosed to form a square box structure, and the accommodating cavity 17 is a cavity in the box, and the refrigerant pipe 11 and the plurality of cooling fins 12 are installed in the accommodating cavity 17; the upper mesh plate 15 and the lower mesh plate 16 both have mesh holes, and the oil smoke can enter the accommodating cavity 17 through the mesh holes of the lower mesh plate 16. After the grease and moisture are condensed, the remaining smoke leaves the accommodating cavity 17 through the mesh holes of the upper mesh plate 15. It should be noted that, in order to facilitate the internal structure of the evaporator 1, Figure 2 The right side of the protection frame 14 is hidden, and in fact the protection frame 14 is a square frame structure.

[0034] This embodiment also provides a range hood, such as Figure 3 As shown, the range hood includes the above-mentioned evaporator 1, which is arranged at the oil fume inlet 21 of the housing 2 of the range hood and can intercept grease and moisture at the oil fume inlet 21. An oil collecting trough (not shown in the figure) should be provided under the evaporator 1 to collect grease and moisture sliding down from the wavy cooling fins 12.

[0035] Preferably, the evaporator 1 is tilted relative to the horizontal plane, and the oil smoke generally enters the housing 2 from the oil smoke inlet 21 at an angle. The tilted evaporator 1 has the same flow direction as the oil smoke, which is conducive to intercepting grease and moisture, and allows the smoke after intercepting grease and moisture to quickly pass through the evaporator 1. The tilt angle of the evaporator 1 to the horizontal plane is 5 to 15 degrees.

[0036] Embodiment 2

[0037] See also Figure 4 The present embodiment provides an evaporator 1, including a refrigerant pipe 11 and a plurality of cooling fins 12 with a sawtooth-shaped longitudinal section. A refrigerant inlet 111 is provided at one end of the refrigerant pipe 1, and a refrigerant outlet 112 is provided at the other end. The plurality of cooling fins 12 are arranged in a transverse direction, and the refrigerant pipe 11 is inserted into the plurality of cooling fins 12. A smoke passage 13 for smoke to pass through is formed between two adjacent cooling fins 12.

[0038] By providing a plurality of cooling fins 12 with sawtooth-shaped longitudinal sections, the refrigerant pipe 11 passes through the plurality of cooling fins 12, and a smoke channel 13 for smoke to pass through is formed between two adjacent cooling fins 12. When the oil smoke enters from the smoke channel 13, the oil smoke collides with the sawtooth cooling fins 12, and the heat of the oil smoke is transferred from the cooling fins 12 to the refrigerant pipe 11 or directly to the refrigerant pipe 11, and the grease and moisture are cooled and condensed on the cooling fins 12, so that the sawtooth cooling fins 12 play a role in intercepting grease and moisture. The intercepted grease and moisture slide along the surface of the sawtooth cooling fins 12 to the bottom of the cooling fins 12, and then leave the evaporator 1. Therefore, the sawtooth cooling fins 12 can intercept and discharge grease and moisture, thereby reducing the grease and moisture remaining on the surface of the refrigerant pipe 11 and the surface of the cooling fins 12, thereby reducing the cleaning frequency of the evaporator 1. In this embodiment, oil smoke enters from the lower end of the smoke channel 13 and is discharged from the upper end of the smoke channel 13; the refrigerant enters the refrigerant pipe 11 from the refrigerant inlet 111 in liquid form, absorbs heat and evaporates into gas, and then flows out from the refrigerant outlet 112.

[0039] Preferably, the cross section of the cooling fins 12 is sawtooth-shaped, which can increase the number of collisions between the oil smoke and the cooling fins 12, thereby improving the effect of intercepting grease and moisture.

[0040] In this embodiment, the bending angle of the zigzag cooling fins 12 is 90°. In other embodiments, the bending angle of the cooling fins 12 may be other angles.

[0041] Compared with the second embodiment, the wavy cooling fins 12 have a smoother surface, which is conducive to the discharge of grease and moisture, and can prevent grease and moisture from being retained on the cooling fins 12 for a long time. In addition, the wavy cooling fins 12 have different angles with the horizontal plane, so that the oil smoke passing through the smoke channel 13 can collide with the cooling fins 12 more times, which is conducive to intercepting grease and moisture.

[0042] Embodiment 3

[0043] Different from the first embodiment, see Figure 5 The cooling fins 12 are tilted relative to the refrigerant pipe 11, that is, the upper end and the lower end of the cooling fins 12 are not on the same vertical plane (the vertical plane where the upper end of the cooling fins 12 is located is represented by a dotted line marked with a). The tilt angle of the cooling fins 12 is 5 to 15 degrees. When the oil smoke passes through the wavy cooling fins 12, the grease and moisture are blocked, so that the oil in the oil smoke will adhere to the wavy cooling fins 12 and flow to the oil collecting tank. The tilted cooling fins 12 can better block grease and moisture, and effectively retain the grease and moisture in the evaporator 1.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An evaporator, characterized in that: It comprises a refrigerant tube (11) and a plurality of cooling fins (12), wherein the longitudinal section of the cooling fin (12) is wavy or sawtooth-shaped, a refrigerant inlet (111) is provided at one end of the refrigerant tube (11), and a refrigerant outlet (112) is provided at the other end, the plurality of cooling fins (12) are arranged in a transverse direction, the refrigerant tube (11) is inserted into the plurality of cooling fins (12), and a smoke passage (13) for smoke to pass through is formed between two adjacent cooling fins (12); The cross section of the cooling fin (12) is wavy or sawtooth-shaped; The refrigerant pipe (11) is a serpentine structure; It also includes a protection frame (14), an upper mesh plate (15) and a lower mesh plate (16), wherein the upper mesh plate (15) and the lower mesh plate (16) are respectively installed at the top and the bottom of the protection frame (14), and the protection frame (14), the upper mesh plate (15) and the lower mesh plate (16) enclose a receiving cavity (17), wherein the refrigerant pipe (11) and a plurality of cooling fins (12) are all installed in the receiving cavity (17), and the oil smoke enters the receiving cavity (17) from the mesh holes of the lower mesh plate (16), passes through the smoke channel (13), and then leaves the receiving cavity (17) from the mesh holes of the upper mesh plate (15).

2. The evaporator according to claim 1, characterized in that The cooling fins (12) are arranged obliquely relative to the refrigerant pipe (11).

3. The evaporator according to claim 1, characterized in that The inclination angle of the cooling fins (12) is 5 to 15 degrees.

4. The evaporator according to claim 1, characterized in that The refrigerant inlet (111) is located at the upper end of the serpentine refrigerant tube (11), and the refrigerant outlet (112) is located at the lower end of the serpentine refrigerant tube (11).

5. The evaporator according to claim 1, characterized in that The number of the refrigerant pipes (11) is multiple, and the multiple refrigerant pipes (11) are arranged on the same horizontal plane.

6. The evaporator according to claim 1, characterized in that The evaporator (1) is arranged inclined relative to a horizontal plane.

7. A range hood, characterized in that: It comprises the evaporator (1) according to any one of claims 1 to 6, wherein the evaporator (1) is arranged at the oil fume inlet (21) of the housing (2) of the range hood.

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