Condenser and refrigeration type range hood applying same

Abstract

The condenser comprises a heat exchange module, a gas collecting pipe and a liquid collecting pipe, the heat exchange module is arranged in a housing, the housing is provided with an air inlet and an air outlet, an air duct is formed in the housing, and the heat exchange module comprises heat exchange units which are communicated in sequence. The gas collecting pipe is communicated with the liquid collecting pipe through the heat exchange units, the heat exchange units are in a sheet shape and are arranged in parallel, and the side faces of the heat exchange units keep away from the front impact direction of airflow in the air flue. The sheet-shaped heat exchange units of the condenser are sequentially communicated and arranged in parallel, the side faces of the heat exchange units keep away from the front impact direction of airflow in an air channel, airflow resistance of a heat exchanger to the air channel can be reduced, and due to the fact that the overall flowing direction of refrigerants in the heat exchange units is opposite to the flowing direction of air in the air channel, countercurrent flow heat exchange can be achieved; in addition, the oil smoke airflow cannot directly impact the side face of the heat exchange unit, and therefore the influence on the oil smoke suction effect is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood, especially to a condenser and a refrigeration type range hood with the condenser. BACKGROUND

[0002] In order to improve the user cooking experience, people have invented various refrigeration type range hoods, which increase air conditioner components on the basis of range hood platform, that is, integrate compressor, heat dissipation module and refrigeration module on the range hood platform, the heat dissipation module includes heat dissipation fan and condenser, and the refrigeration module includes inner machine fan and evaporator. Common refrigeration systems all use copper finned tube heat exchanger or microchannel heat exchanger as the condenser of air conditioner refrigeration system. If the copper finned tube condenser is placed in the oil fume channel, the oil fume in the oil fume channel will quickly adhere to the fins and heat exchange tubes on the surface of the condenser, greatly increasing the thermal resistance between air and heat exchanger, resulting in poor heat dissipation performance of the condenser. In addition, the traditional condenser is placed in the oil fume channel, and the condenser has a large normal contact surface with oil fume flow, which will increase the resistance in the flue to some extent, thereby reducing the oil fume suction effect of the range hood main fan. In view of the above, the existing refrigeration type range hood needs to be further improved. SUMMARY

[0003] The first technical problem to be solved by the utility model is to provide a condenser with high heat exchange efficiency and small air flow resistance in view of the above existing technology.

[0004] The second technical problem to be solved by the utility model is to provide a refrigeration type range hood with high condenser heat exchange efficiency and small air flow resistance to the range hood fan in view of the above existing technology.

[0005] The technical scheme adopted by the utility model to solve the above first technical problem is: a condenser, comprising a heat exchange module, a gas collecting pipe arranged at the inlet end of the heat exchange module, and a liquid collecting pipe arranged at the outlet end of the heat exchange module, characterized in that: it further comprises a cover shell, the heat exchange module is arranged inside the cover shell, the cover shell is provided with an air inlet and an air outlet, and the cover shell forms an air duct communicating the air inlet and the air outlet inside; the heat exchange module comprises heat exchange units connected in sequence, the gas collecting pipe is connected in communication with the liquid collecting pipe through the heat exchange units, the heat exchange units are in the form of sheets and arranged in parallel with each other, and the side surface of the heat exchange unit avoids the direct impact direction of the air flow in the air duct.

[0006] Preferably, the heat exchange units are arranged in a group and distributed on the same plane.

[0007] In order to improve the heat exchange efficiency, the heat exchange units are arranged in at least two groups, and the heat exchange units in each group are arranged on the same plane, and the heat exchange units in different groups are arranged in parallel with each other.

[0008] In order to make the refrigerant flow through each heat exchange unit, the air inlet end of the heat exchange unit of each group is connected to the air collecting pipe, and the liquid outlet end of each group of heat exchange units is connected to the liquid collecting pipe.

[0009] In order to improve the heat exchange efficiency of the heat exchanger, the heat exchange unit is in a long strip shape structure, and the heat exchange unit is arranged vertically and the width direction is arranged along the transverse flow direction of the air flow in the air duct. Thus, there is almost no boundary layer under the condition of suitable wind speed, and the heat exchange efficiency can be improved.

[0010] The heat exchange unit can have various structures, preferably, the heat exchange unit comprises a first heat exchange sheet and a second heat exchange sheet which overlap to form a refrigerant flow channel for the refrigerant flow between the first heat exchange sheet and the second heat exchange sheet.

[0011] Further preferably, the inner surfaces of the first heat exchange sheet and the second heat exchange sheet are shaped to form a pressure type structure, thereby forming the refrigerant flow channel between the first heat exchange sheet and the second heat exchange sheet. In this way, the refrigerant flow is distributed in a meandering manner, which can enhance the turbulence of the refrigerant in the heat exchange unit, thereby improving the heat exchange efficiency.

[0012] Further preferably, the outer surface of the heat exchange unit is provided with a corrosion and rust prevention layer. In this way, oil stains are not easily attached to the surface of the heat exchanger, and the condenser can be corrosion and rust prevention, prolonging its service life.

[0013] Further preferably, the air inlet is arranged at the bottom of the shell, the air outlet is arranged at the top of the shell, and the air inlet and the air outlet are arranged left and right staggered. In this way, the air flow flows into the air inlet, and then flows out of the air outlet after flowing through the entire air duct, prolonging the heat exchange path and improving the heat exchange efficiency.

[0014] The technical solution adopted by the utility model to solve the second technical problem is: a refrigeration type range hood, comprising a shell, an oil smoke fan and a refrigeration module are installed in the shell, the refrigeration module comprises a compressor, a condenser and an evaporator, characterized in that: the condenser is located above the oil smoke fan, the air inlet of the condenser is communicated with the air outlet of the oil smoke fan, and the overall flow direction of the refrigerant in the heat exchange unit of the condenser is opposite to the air flow direction in the air duct.

[0015] Compared with the prior art, the advantages of this utility model are as follows: the condenser has the heat exchange module inside the casing, and the heat exchange units connected in sequence are plate-shaped and arranged in parallel to each other. The sides of the heat exchange units avoid the frontal impact direction of the airflow in the duct, which can reduce the airflow resistance of the condenser in the duct. The condenser is located in the exhaust duct downstream of the fume extractor. Since the overall flow direction of the refrigerant in the heat exchange unit is opposite to the airflow direction in the duct, countercurrent heat exchange can be achieved, thereby improving the heat exchange efficiency of the heat exchanger. Furthermore, since the oil fume airflow does not directly impact the sides of the heat exchange unit, the additional resistance added by the condenser to the fume extractor is small, thereby reducing the impact on the fume extraction effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the condenser according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the condenser from another angle;

[0018] Figure 3 for Figure 1 The diagram shows the structure of the condenser after the casing has been removed.

[0019] Figure 4 for Figure 3 A structural diagram of the structure shown from another angle;

[0020] Figure 5 This is a schematic diagram of the heat exchange unit according to an embodiment of the present invention;

[0021] Figure 6 for Figure 5 The structural cross-sectional view of the heat exchange unit shown;

[0022] Figure 7 This is a schematic diagram of the structure of a refrigerated range hood according to an embodiment of the present invention. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 4 As shown, the condenser in this embodiment includes a heat exchange module 1, a gas collecting pipe 2, a liquid collecting pipe 3, and a casing 4. The gas collecting pipe 2 is located at the inlet end of the heat exchange module 1, and the liquid collecting pipe 3 is located at the outlet end of the heat exchange module 1. The heat exchange module 1, the gas collecting pipe 2, and the liquid collecting pipe 3 are located inside the casing 4. The refrigerant flows into the heat exchange module 1 from the gas collecting pipe 2 and then flows out from the liquid collecting pipe 3.

[0025] The housing 4 has an air inlet 41 and an air outlet 42. Inside the housing 4, an air duct 5 is formed that connects the air inlet 41 and the air outlet 42. The air inlet 41 and the air outlet 42 are staggered to the left and right. The air inlet 41 is located at the bottom left side of the housing 4, and the air outlet 42 is located at the top right side of the housing 4. In this way, the length of the air duct 5 can be extended, so that the airflow entering the air duct can fully exchange heat with the heat exchange module 1, thereby improving the heat exchange efficiency.

[0026] by Figure 3 The direction indicated by arrow A is forward. In this embodiment, the heat exchange units are divided into five groups, spaced apart. Each group of heat exchange units contains five heat exchange units 11, which are plate-shaped and arranged parallel to each other. Heat exchange units 11 belonging to the same group are connected sequentially and located on the same plane. Heat exchange units 11 in different groups are located on different parallel planes, that is, they are located on five different parallel planes from front to back. The gas collecting pipe 2 is located on the right side of heat exchange mode 1, and the liquid collecting pipe 3 is located on the left side of heat exchange module 1. The rightmost heat exchange unit 11 in each group is connected to the gas collecting pipe 2, and the leftmost heat exchange unit 11 in each group is connected to the liquid collecting pipe 3. In this way, the gas collecting pipe 2 is connected to the liquid collecting pipe 3 through the heat exchange units 11. The refrigerant flowing in from the gas collecting pipe 2 can flow through all the heat exchange units 11 and then into the liquid collecting pipe 3, and the refrigerant flows from the left side to the right side of the heat exchange module 1. Of course, the heat exchange module is not limited to being divided into five groups, nor is it limited to each group containing five heat exchange units 11.

[0027] The heat exchange unit 11 has a long, strip-shaped structure. It is arranged vertically, with its width extending along the transverse flow direction of the airflow within the duct 5. Here, the airflow within the duct 5 flows from the left side to the right side of the heat exchange module 1. The heat exchange unit 11 includes overlapping first and second heat exchange plates. Both the first and second heat exchange plates are made of stainless steel and are sealed on all sides. A refrigerant flow channel 12 is formed between the first and second heat exchange plates for refrigerant flow.

[0028] like Figure 5 As shown, the heat exchange unit 11 has an inlet 14 and an outlet 15. Refrigerant flows in through the inlet 14, passes through the refrigerant channel 12, and then flows out through the outlet 15. Figure 6 As shown, in this embodiment, the inner surfaces of the first and second heat exchange plates are formed with a molding structure 13, thereby forming a refrigerant flow channel 12 between the first and second heat exchange plates. Additionally, a graphene coating can be applied to the outer surface of the heat exchange unit 11 to prevent rust and fouling, thus extending the service life of the condenser.

[0029] like Figure 7As shown, the refrigerated range hood of this embodiment includes a housing 6, in which a range hood fan 7 and a refrigeration module are installed. The refrigeration module includes a compressor (not shown in the figure), a condenser and an evaporator 8. The compressor, condenser and evaporator 8 are connected by a refrigerant pipeline. The working principle of the refrigeration module is the same as that of an existing air conditioner, and will not be described in detail here.

[0030] by Figure 7 The direction indicated by arrow B is to the right. The air outlet of the range hood 7 faces upward, and the condenser is located above the range hood 7. The air inlet 41 of the condenser faces downward and is directly connected to the air outlet of the range hood 7. The air outlet 42 of the condenser faces upward, and an air outlet hood 9 is installed on the air outlet 42 of the condenser. After the condenser is installed, the refrigerant in the heat exchange unit 11 of the condenser flows from right to left, while the air in the duct 5 flows from left to right. The two directions are opposite, achieving counter-current heat exchange. Furthermore, the side of the heat exchange unit 11 avoids the direct impact of the airflow in the duct 5, reducing resistance.

[0031] When the cooling range hood operates in cooling mode, cooking fumes are discharged into the condenser duct 5 through the exhaust fan 7. Because the heat exchange unit 11 is very thin (typically around 3mm thick), the additional resistance applied to the exhaust fan is relatively small, minimizing its impact on the fume extraction effect. Furthermore, its graphene coating prevents fumes from easily adhering. Simultaneously, high-temperature, high-pressure refrigerant vapor from the compressor flows in through the gas collection pipe 2, is distributed to various branches, and then flows through each heat exchange unit 11. After cooling, it converges into the liquid collection pipe 3 and flows towards the evaporator 8. At the same time, the cooking fume airflow enters the duct 5 and exchanges heat with the heat exchange unit 11, thus dissipating heat from the condenser. Since the overall refrigerant flow direction inside the heat exchange unit 11 is opposite to the cooking fume flow direction in the duct 5, counter-current heat exchange is achieved, enhancing the condenser's heat exchange efficiency. In addition, the heat exchange unit 11 is arranged vertically and its width extends along the transverse flow direction of the airflow in the duct 5. The width can usually be designed to be about 30mm, that is, the length along the direction of oil fume flow is very short. Under suitable wind speed, there is almost no boundary layer, which is conducive to improving the heat exchange efficiency of the condenser.

[0032] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A condenser comprising a heat exchange module (1), a gas collecting pipe (2) disposed at the inlet end of the heat exchange module (1), and a liquid collecting pipe (3) disposed at the outlet end of the heat exchange module (1), characterized in that: It also includes a cover (4), the heat exchange module (1) is located inside the cover (4), the cover (4) has an air inlet (41) and an air outlet (42), and an air duct (5) is formed inside the cover (4) to connect the air inlet (41) and the air outlet (42). The heat exchange module (1) includes heat exchange units (11) connected in sequence. The gas collecting pipe (2) is connected to the liquid collecting pipe (3) through the heat exchange unit (11). The heat exchange unit (11) is plate-shaped and arranged parallel to each other, and the side of the heat exchange unit (11) avoids the frontal impact direction of the airflow in the air duct (5).

2. The condenser according to claim 1, characterized in that: The heat exchange units (11) are in a group and distributed on the same plane.

3. The condenser according to claim 1, characterized in that: The heat exchange unit (11) has at least two groups, and each group of heat exchange units (11) is located on the same plane. The heat exchange units (11) of different groups are arranged in parallel to each other.

4. The condenser according to claim 2, characterized in that: The air inlet of each heat exchange unit (11) is connected to the gas collection pipe (2), and the liquid outlet of each heat exchange unit (11) is connected to the liquid collection pipe (3).

5. The condenser according to claim 1, characterized in that: The heat exchange unit (11) has a long strip-shaped sheet structure. The heat exchange unit (11) is arranged vertically and its width extends along the transverse flow direction of the airflow in the air duct (5).

6. The condenser according to claim 1, characterized in that: The heat exchange unit (11) includes a first heat exchange plate and a second heat exchange plate that are overlapped, and a refrigerant flow channel (12) for refrigerant flow is formed between the first heat exchange plate and the second heat exchange plate.

7. The condenser according to claim 6, characterized in that: The inner surfaces of the first heat exchange plate and the second heat exchange plate are formed with a molding structure (13), thereby forming the refrigerant flow channel between the first heat exchange plate and the second heat exchange plate.

8. The condenser according to claim 1, characterized in that: The outer surface of the heat exchange unit (11) is provided with an anti-corrosion and anti-rust layer.

9. The condenser according to claim 1, characterized in that: The air inlet (41) is located at the bottom of the cover (4), and the air outlet (42) is located at the top of the cover (4), with the air inlet (41) and the air outlet (42) staggered to the left and right.

10. A refrigerated range hood, comprising a housing (6), wherein a range hood fan (7) and a refrigeration module are installed inside the housing (6), the refrigeration module comprising a compressor, a condenser and an evaporator (8), characterized in that: The condenser is the condenser described in any one of claims 1 to 9. The condenser is located above the fume extraction fan (7). The air inlet (41) of the condenser is connected to the air outlet of the fume extraction fan (7). Furthermore, the overall flow direction of the refrigerant in the heat exchange unit (11) of the condenser is opposite to the flow direction of the air in the duct (5).

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