Liquid distribution device and air conditioner range hood provided with the same

Abstract

A kind of liquid distribution device and install the air-conditioning range hood of the liquid distribution device, the flow passage is formed in the housing of liquid distribution device, the transverse liquid distribution plate in housing interior separates flow passage into upper flow passage and lower flow passage, there is a first liquid distribution hole in the transverse liquid distribution plate, water inlet is arranged in the housing and is communicated with upper flow passage, heat exchange fin is arranged in the bottom of housing, the inner end of heat exchange fin extends into lower flow passage, the outer end of heat exchange fin is exposed in the bottom of housing, there is a second liquid distribution hole corresponding to heat exchange fin in the bottom of housing, second liquid distribution hole is attached to corresponding heat exchange fin.The flow hole of the transverse liquid distribution plate of the liquid distribution device constitutes first liquid distribution hole, the water outlet in the bottom of lower flow passage constitutes second liquid distribution hole, the water flowing into upper liquid distribution channel from water inlet is along heat exchange fin after being distributed twice, the condensate water of air-conditioning range hood can be spread in plane form along heat exchange fin and be transmitted to the surface of condenser, beneficial to complete rapid heat exchange and evaporation process.

Description

Technical Field

[0001] This invention relates to range hoods, and more particularly to a liquid distribution device and an air-conditioned range hood equipped with the liquid distribution device. Background Technology

[0002] A liquid distributor is a device used to uniformly distribute liquid. Various liquid distributors with different structures exist in the prior art. For example, the Chinese utility model patent No. 201320500874.4 (authorization announcement No. CN 203494521 U) discloses a liquid distributor device. This device consists of an upper liquid distribution plate, a middle liquid distribution plate, a lower liquid distribution plate, a connecting plate, distribution pipes, and distribution holes. The upper, middle, and lower liquid distribution plates are all disc-shaped structures with uniformly distributed distribution holes at their bottoms. The upper, middle, and lower liquid distribution plates are arranged in three layers, connected around their perimeter by a connecting plate. Distribution pipes are connected to the distribution holes of the lower liquid distribution plate. All distribution pipes protrude through the distribution holes to the same height. Because the exposed height of the pipe ends of the distribution pipes connected to each distribution hole of the liquid distribution plate is the same, the liquid flowing into the distribution pipe through the pipe opening is uniform, thereby greatly improving the uniformity of the liquid distribution and meeting the needs of improving product quality and production efficiency. Another example is the "Liquid Distributor, Heat Exchanger and Air Conditioning Unit" disclosed in Chinese invention patent application No. 201810879931.1 (Publication No. CN 108917232 A). This liquid distributor includes an upper sealing plate and a lower housing. The upper sealing plate is disposed on the upper part of the lower housing and together with the lower housing forms a liquid distribution cavity. The edge of the lower housing is bent outwards towards the liquid distribution cavity to form a first bent portion, which is riveted to the upper sealing plate. The liquid distributor, heat exchanger, and air conditioning unit provided by this invention increase assembly efficiency and accuracy by riveting the upper sealing plate and lower housing, effectively preventing welding deformation of the liquid distributor. Furthermore, the inclusion of a first and second equalizing plate allows for triple liquid equalization, ensuring that the refrigerant entering the distributor is evenly distributed axially and radially, thus guaranteeing effective liquid distribution. While the aforementioned liquid distributor also achieves good flow distribution, its structure is relatively complex.

[0003] Furthermore, to improve cooking comfort, air-conditioning range hoods were invented. These hoods contain an air conditioning unit inside their casing. In air-conditioning mode, the condenser of this unit generates heat. If the condenser is not effectively cooled, its heat exchange efficiency will be affected, thus reducing the air conditioner's energy efficiency. During operation, condensate will condense on the surface of the evaporator. Draining this condensate requires an external water pipe, increasing installation costs and causing long-term wall erosion and dripping into the external environment. If the condensate accumulates inside the range hood, it can easily cause localized leaks and even affect its normal operation. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a liquid distribution device with a simple structure and uniform liquid distribution, in view of the above-mentioned existing technology.

[0005] The second technical problem to be solved by the present invention is to provide an air-conditioning type range hood that can improve the heat exchange effect of the heat exchanger by utilizing air conditioner condensate water, in view of the above-mentioned existing technology.

[0006] The technical solution adopted by the present invention to solve the first technical problem mentioned above is as follows: The liquid distribution device includes a housing, and a flow channel is formed inside the housing. The device is characterized in that: a transverse liquid distribution plate is provided inside the housing, which divides the flow channel into an upper flow channel and a lower flow channel; a primary liquid distribution hole is opened on the transverse liquid distribution plate to connect the upper flow channel and the lower flow channel; an inlet connected to the upper flow channel is provided on the housing; heat exchange plates are arranged at the bottom of the housing, with the inner end of the heat exchange plate extending into the lower flow channel and the outer end of the heat exchange plate exposed at the bottom of the housing; and secondary liquid distribution holes corresponding to the heat exchange plates are opened at the bottom of the housing, with the secondary liquid distribution holes abutting against the corresponding heat exchange plates.

[0007] In order to ensure that the water in the upper flow channel can flow into the lower flow channel evenly, the transverse liquid distribution plate is elongated, and the primary liquid distribution holes are located on the side of the transverse liquid distribution plate and are distributed at intervals along the length of the transverse liquid distribution plate.

[0008] To improve the uniformity of liquid distribution, a vertical baffle is provided in the lower flow channel, which divides the lower flow channel into at least two flow zones.

[0009] To further improve the uniformity of liquid distribution, there are at least two vertical baffles distributed at intervals. A flow gap is left between one side of the vertical baffle and the inner wall of the shell. Furthermore, the flow gaps corresponding to adjacent vertical baffles are located on different sides of the shell, thereby giving the lower flow channel a rotating flow area.

[0010] In order to enable the water in the upper flow channel to flow through each flow zone, the primary liquid distribution hole is located at the top of the flow zone on the outside of the shell.

[0011] In a further preferred embodiment, the top of the vertical baffle plate abuts against the horizontal liquid distribution plate, and the bottom of the vertical baffle plate abuts against the inner bottom wall of the shell.

[0012] In order to enable uniform heat exchange, the heat exchange plates are in the shape of inserts and are evenly distributed at intervals in each flow zone, with the outer ends of the heat exchange plates forming insert portions.

[0013] Further preferably, the housing is box-shaped, and both the horizontal liquid distribution plate and the vertical baffle are flat plates.

[0014] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: the air-conditioning type range hood includes a casing and an air conditioning component installed inside the casing. The casing has a smoke exhaust channel and an air outlet channel that are isolated from each other. The air conditioning component includes a compressor, a condenser and an evaporator. The compressor, condenser and evaporator are connected by a refrigerant pipeline. The characteristic feature is that the condenser is located in the smoke exhaust channel, and the liquid distribution device is installed on the condenser. The condensate water condensed on the surface of the evaporator can flow to the surface of the condenser through the liquid distribution device.

[0015] In order to smoothly deliver the air conditioner condensate to the liquid distribution device, a water receiving tray is installed below the evaporator, and a water tank is also included. The outlet of the water receiving tray is connected to the inlet of the water tank, and a water pump is installed in the water path between the outlet of the water tank and the inlet of the liquid distribution device.

[0016] In order to enable the liquid distribution device to exchange heat fully with the condenser, the condenser includes an upper liquid collection pipe and a lower liquid collection pipe arranged horizontally, and flat pipes arranged at intervals between the upper liquid collection pipe and the lower liquid collection pipe. Heat dissipation fins are installed between adjacent flat pipes. The upper liquid collection pipe is interconnected with the lower liquid collection pipe through the flat pipes. The heat exchange fins of the liquid distribution device are inserted into the gaps between the heat dissipation fins.

[0017] To improve the liquid distribution effect, the condenser is inclined relative to the vertical plane, and correspondingly, the liquid distribution device is inclined relative to the vertical plane.

[0018] Further preferably, a range hood is installed inside the casing. Along the direction of oil fume flow, the exhaust duct is located downstream of the range hood. The exhaust duct includes a first exhaust duct and a second exhaust duct. A damper is installed at the outlet of the range hood to switch between one of the first and second exhaust ducts and the exhaust duct outlet. The condenser and liquid distribution device are located within the first exhaust duct. Thus, the range hood has a dual-channel structure: the first exhaust duct forms a heat dissipation channel, and the second exhaust duct forms a direct exhaust channel. In different operating modes, the corresponding exhaust duct can be opened by switching the damper.

[0019] To make the system structure more compact, the compressor is installed inside the housing.

[0020] Compared with the prior art, the advantages of the present invention are as follows: The liquid distribution device divides the flow channel into an upper flow channel and a lower flow channel by a horizontal liquid distribution plate. The flow holes on the horizontal liquid distribution plate constitute the primary liquid distribution holes, and the water outlet at the bottom of the lower flow channel constitutes the secondary liquid distribution holes. The secondary liquid distribution holes correspond one-to-one with the heat exchange plates. In this way, the water flowing into the upper liquid distribution channel from the inlet undergoes secondary liquid distribution, and the large flow of liquid is dispersed into multiple small droplets and flows out along the heat exchange plates. After the air-conditioning range hood applies this liquid distribution device, the condensate can spread naturally along the heat exchange plates in a planar form and enter the condenser surface, avoiding the tension effect of droplet entry, making the contact more sufficient, facilitating the completion of the rapid heat exchange and evaporation process, quickly processing all the condensate, thereby improving the heat exchange effect of the condenser and thus improving the air conditioning energy efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the liquid distribution device according to an embodiment of the present invention;

[0022] Figure 2 for Figure 4 A cross-sectional view of the liquid distribution device shown in the figure along the CC direction;

[0023] Figure 3 for Figure 6 A BB-direction cross-sectional view of the liquid distribution device shown;

[0024] Figure 4 for Figure 3 A sectional view of the liquid distribution device shown from direction AA;

[0025] Figure 5 for Figure 1 A bottom view of the liquid distribution device shown;

[0026] Figure 6 for Figure 1 Side view of the liquid distribution device shown;

[0027] Figure 7 for Figure 2 An enlarged schematic diagram of section D in the middle;

[0028] Figure 8 for Figure 5 An enlarged schematic diagram of section E in the middle;

[0029] Figure 9 This is a schematic diagram of the structure of an air-conditioning type range hood according to an embodiment of the present invention;

[0030] Figure 10 for Figure 9 The diagram shows the water system of the range hood.

[0031] Figure 11 This is a schematic diagram of the condenser according to an embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 8 As shown, the liquid distribution device of this embodiment includes a box-shaped housing 1, with a flow channel formed inside the housing 1. A transverse liquid distribution plate 15 is provided inside the housing 1. The transverse liquid distribution plate 15 is a flat plate that divides the flow channel into an upper flow channel 13 and a lower flow channel 14. A primary liquid distribution hole 16 is formed on the transverse liquid distribution plate 15, and the upper flow channel 13 and the lower flow channel 14 are connected through the primary liquid distribution hole 16. In this embodiment, the transverse liquid distribution plate 15 is elongated, and the primary liquid distribution holes 16 are located on the side of the transverse liquid distribution plate 15 and are evenly distributed along the length of the transverse liquid distribution plate 15. Heat exchange fins 17 are arranged at the bottom of the housing 1. The heat exchange fins 17 are in the shape of inserts. The inner end of the heat exchange fins 17 extends into the lower flow channel 14, and the outer end of the heat exchange fins 17 is exposed at the bottom of the housing 1 to form an insertion part. Secondary liquid distribution holes 12 are opened at the bottom of the housing 1, corresponding one-to-one with the heat exchange fins 17. The secondary liquid distribution holes 12 are attached to the corresponding heat exchange fins 17, so that the water flowing out of the secondary liquid distribution holes 12 can flow out along the heat exchange fins 17.

[0034] like Figure 2 As shown, three spaced vertical baffles 18 are arranged in the lower flow channel 14. Each vertical baffle 18 is a flat plate. The top of each vertical baffle 18 abuts against the horizontal liquid distribution plate 15, and the bottom of each vertical baffle 18 abuts against the inner bottom wall of the housing 1. A flow gap 19 is left between one side of each vertical baffle 18 and the inner side wall of the housing 1. Furthermore, the flow gaps 19 corresponding to adjacent vertical baffles 18 are located on different sides of the housing 1. The lower flow channel 14 is sequentially divided into a first flow zone 141, a second flow zone 142, a third flow zone 143, and a fourth flow zone 144. These four flow zones constitute a rotating flow zone, with both the first and fourth flow zones located on the outer side of the casing 1. In this embodiment, the primary liquid distribution hole 16 is connected to the first flow zone 141. Furthermore, to improve heat exchange uniformity, heat exchange plates 17 are evenly distributed at intervals within each flow zone 141.

[0035] When the liquid distribution device is working, firstly, water flows into the upper flow channel 13 from the inlet 11; then, it flows into the first flow zone 141 of the lower flow channel 14 through the first-stage liquid distribution hole 16, and flows sequentially along the rotating second flow zone 142, third flow zone 143 and fourth flow zone 144. In the process of flowing through the lower flow channel 14, it fully exchanges heat with the heat exchange plate 17, absorbs heat and the water temperature rises, and flows out from the second-stage liquid distribution hole 12 along the heat exchange plate 17 to achieve uniform liquid distribution.

[0036] like Figure 9 and Figure 10 As shown, the air-conditioning range hood of this embodiment includes a housing 20 and an air conditioning assembly installed inside the housing 20. The air conditioning assembly includes a compressor 31, a condenser 32, and an evaporator 33. The compressor 31, condenser 32, and evaporator 33 are connected by a refrigerant pipe 34. A throttling device 35 is installed on the refrigerant pipe 34 between the condenser 32 and the evaporator 33. The specific working principle of the air conditioning assembly is the same as that of existing air conditioners and will not be described in detail here.

[0037] A range hood fan 23 is installed at the lower part of the casing 20. The casing 20 contains a smoke exhaust duct 21 and an air outlet duct 22, which are isolated from each other. The smoke exhaust duct 21 and the air outlet duct 22 are located at the upper part of the casing 20. Figure 9 The direction indicated by the middle arrow F is to the right, and the air outlet duct 22 is located to the right of the smoke exhaust duct 21. In this embodiment, the smoke exhaust duct 21 includes a first smoke exhaust duct 211 and a second smoke exhaust duct 212. A damper 24 is installed at the outlet of the range hood 23 to switch between one of the first smoke exhaust ducts 211 and the second smoke exhaust duct 212 and the outlet of the range hood 23. The condenser 32 and the liquid distribution device are located within the first smoke exhaust duct 211. The first smoke exhaust duct 211 forms a heat dissipation channel, and the second smoke exhaust duct 212 forms a direct exhaust channel. Different smoke exhaust channels are activated under different operating modes. Furthermore, to prevent oil fume contamination of the condenser 32, an electrostatic purification device 25 is installed within the first smoke exhaust duct 211, and the electrostatic purification device 25 is located upstream of the condenser 32 along the direction of oil fume flow.

[0038] In this embodiment, the compressor 31 is installed inside the casing 20, and the evaporator 33 is installed inside the air outlet duct 22. A water collection tray 41 is installed below the evaporator 33, and the outlet of the water collection tray 41 is connected to the inlet of the water tank 42. A water pump 43 is installed on the water path between the outlet of the water tank 42 and the inlet 11 of the liquid distribution device. In this way, the condensate collected by the water collection tray 41 can be transported to the liquid distribution device.

[0039] like Figure 11 As shown, the condenser 32 includes a horizontally arranged upper liquid collecting pipe 321, a lower liquid collecting pipe 322, and flat pipes 323 arranged at intervals between the upper and lower liquid collecting pipes. Heat dissipation fins 324 are installed between adjacent flat pipes 323. The upper liquid collecting pipe 321 is interconnected with the lower liquid collecting pipe 322 through the flat pipes 323. The heat exchange fins 17 of the liquid distribution device are inserted into the gaps between the heat dissipation fins 324, allowing for rapid heat transfer through direct contact heat conduction, resulting in higher heat exchange efficiency. In this embodiment, the condenser 32 is inclined relative to the vertical plane, and correspondingly, the liquid distribution device is also inclined relative to the vertical plane.

[0040] The working principle of this air-conditioning type range hood is as follows:

[0041] With both the range hood and air conditioner on, by switching the air valve 24, the first exhaust duct 211 is opened and the second exhaust duct 212 is closed. The fumes are discharged through the first exhaust duct 211. Furthermore, the fumes airflow can cool and dissipate heat from the condenser 32 by passing over its surface, thereby improving the heat exchange efficiency of the condenser 32. The condensate on the surface of the evaporator 33 flows sequentially into the drip tray 41 and the water tank 42. Under the action of the water pump 43, the water in the water tank 42 is transported to the inlet 11 of the liquid distribution device and flows through the upper flow channel 13 and the lower flow channel 14, exchanging heat with the heat exchange plates 17 in each flow zone of the lower flow channel 14. The heat from the condenser 32 is transferred to the condensate through the heat exchange plates 17. The condensate circulates multiple times in the rotary channel of the liquid distribution device, increasing its temperature. After flowing out from the secondary liquid distribution hole 12, the large flow of liquid disperses into multiple small droplets, flowing along the heat exchange plates 17 and towards the surface of the condenser 32, ensuring more thorough contact and facilitating rapid heat exchange and evaporation. This quickly processes all the condensate, improving the heat exchange effect of the condenser and enhancing the air conditioning energy efficiency. Simultaneously, cold air is blown out from the air outlet duct 22.

[0042] When the range hood is turned on, by switching the air valve 24, the first exhaust duct 211 is closed and the second exhaust duct 212 is opened, and the fumes are discharged to the outside through the second exhaust duct 212.

Claims

1. A liquid distribution device comprising a housing (1) inside which a flow passage is formed, characterized in that: The shell (1) is internally provided with a transverse liquid distribution plate (15) which separates the flow channel into an upper flow channel (13) and a lower flow channel (14), and a primary liquid distribution hole (16) is formed in the transverse liquid distribution plate (15) to communicate the upper flow channel (13) and the lower flow channel (14); a water inlet (11) is arranged on the shell (1) to communicate with the upper flow channel (13); a heat exchange fin (17) is arranged at the bottom of the shell (1), the inner end of the heat exchange fin (17) extends into the lower flow channel (14), the outer end of the heat exchange fin (17) is exposed at the bottom of the shell (1), a secondary liquid distribution hole (12) corresponding to the heat exchange fin (17) is formed at the bottom of the shell (1), and the secondary liquid distribution hole (12) is attached to the corresponding heat exchange fin (17); the transverse liquid distribution plate (15) is in a strip shape, the primary liquid distribution hole (16) is arranged at the side of the transverse liquid distribution plate (15) and is spaced along the length direction of the transverse liquid distribution plate (15); a vertical flow separation plate (18) is arranged in the lower flow channel (14), the vertical flow separation plate (18) separates the lower flow channel (14) into at least two flow areas, and the vertical flow separation plate (18) has at least two plates and is spaced; a flow gap (19) is left between one side of the vertical flow separation plate (18) and the inner side wall of the shell (1), and the flow gaps (19) corresponding to adjacent vertical flow separation plates (18) are located at different sides of the shell (1), so that the lower flow channel (14) has a rotary flow area; the top of the vertical flow separation plate (18) abuts against the transverse liquid distribution plate (15), and the bottom of the vertical flow separation plate (18) abuts against the inner bottom wall of the shell (1).

2. The liquid distribution device of claim 1, wherein: The primary liquid distribution hole (16) is arranged at the top of the flow area outside the shell (1).

3. The liquid distribution device of claim 1, wherein: The heat exchange fin (17) is in a plug shape and is uniformly spaced in each flow area, and the outer end of the heat exchange fin (17) forms a plug-in part.

4. The liquid distribution device of claim 1, wherein: The shell (1) is in a square box shape, and the transverse liquid distribution plate (15) and the vertical flow separation plate (18) are both flat plates.

5. An air-conditioning type range hood comprising a casing (20) and an air conditioning assembly installed inside the casing, the casing (20) being provided with a smoke exhaust passage (21) and an air outlet passage (22) isolated from each other, the air conditioning assembly comprising a compressor (31), a condenser (32) and an evaporator (33), the compressor (31), the condenser (32) and the evaporator (33) being connected to each other by a refrigerant line (34), characterized in that: The condenser (32) is arranged in the smoke exhaust channel (21), and the liquid distribution device of any one of claims 1 to 4 is arranged on the condenser, so that the condensed water on the surface of the evaporator (33) can flow to the surface of the condenser (32) through the liquid distribution device. 6.The air-conditioning range hood according to claim 5, characterized in that: A water collecting tray (41) is arranged below the evaporator (33), and a water tank (42) is further arranged, a water outlet of the water collecting tray (41) is communicated with a water inlet of the water tank (42), and a water pump (43) is arranged on the water path between the water outlet of the water tank (42) and the water inlet (11) of the liquid distribution device. 7.The air-conditioning range hood according to claim 5, characterized in that: The condenser (32) comprises a transversely arranged upper collecting tube (321), a lower collecting tube (322) and flat tubes (323) arranged between the upper collecting tube and the lower collecting tube at intervals, heat dissipation fins (324) being arranged between adjacent flat tubes (323), the upper collecting tube (321) being in communication with the lower collecting tube (322) through the flat tubes (323), and the heat exchange fins (17) of the liquid distribution device being inserted into the gaps of the heat dissipation fins (324). 8.The air-conditioning range hood according to claim 7, characterized in that: The condenser (32) is arranged obliquely relative to a vertical plane, and correspondingly, the liquid distribution device is arranged obliquely relative to the vertical plane. 9.The air-conditioning range hood according to claim 5, characterized in that: An oil fume suction fan (23) is arranged inside the casing (20), and along the direction of oil fume flow, the smoke discharging passage (21) is arranged downstream of the oil fume suction fan (23), the smoke discharging passage (21) comprises a first smoke discharging passage (211) and a second smoke discharging passage (212), a wind valve (24) is arranged at the outlet of the oil fume suction fan (23) to switch one of the first smoke discharging passage (211) and the second smoke discharging passage (212) to be in communication with the outlet of the oil fume suction fan (23), and the condenser (32) and the liquid distribution device are arranged in the first smoke discharging passage (211). 10.The air-conditioning range hood according to claim 5, characterized in that: The compressor (31) is arranged inside the casing (20).

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