CN217011528U

CN217011528U - Range hood control panel heat abstractor and use its range hood

Info

Publication number: CN217011528U
Application number: CN202123030552.1U
Authority: CN
Inventors: 袁柯铭
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-12-04
Filing date: 2021-12-04
Publication date: 2022-07-19
Anticipated expiration: 2031-12-04

Abstract

The utility model relates to a heat sink for a control panel of a range hood and a range hood applying the heat sink, wherein the heat sink comprises: the radiator is arranged on a control panel of the range hood and is provided with a first flow channel for cooling liquid to flow, and the first flow channel is provided with a first inlet and a first outlet; the heat exchanger is arranged at an air outlet cover of the range hood and is provided with a second flow channel, the second flow channel is provided with a second inlet and a second outlet, the second inlet is communicated with the first outlet, and the second outlet is communicated with the first inlet; and a liquid pump disposed in a flow path formed by the first flow passage, the second flow passage, and a portion communicating with each other. The cooling liquid flows to the radiator, can exchange heat with the control panel, reaches quick radiating purpose, and the liquid that is heated after the heat transfer flows to the heat exchanger department, and the heat of carrying can be with going out the fan housing heating, melts the greasy dirt that condenses on it, makes inside it flows into range hood under the influence of gravity, has realized the effective recovery of heat of control panel and has recycled.

Description

Range hood control panel heat abstractor and use its range hood

Technical Field

The utility model relates to the technical field of range hoods, in particular to a range hood control panel heat dissipation device and a range hood applying the same.

Background

The range hood is a kitchen appliance for purifying the kitchen environment. The control system of the range hood is generally installed on a control panel in an electrical box, and internal electronic components can generate a large amount of heat during working, in particular to an IPM module (intelligent power module), which can increase control current and heat more and more seriously along with the increase of the air volume of the range hood, so that how to ensure the effective heat dissipation of a circuit board becomes a major factor restricting the performance of the range hood.

For example, a conventional heat dissipation method in the prior art is to attach a metal heat sink to the top of the IPM module, and increase the heat dissipation area to the air by using the heat radiation of the heat sink, thereby dissipating heat from the IPM module. The larger the area of the heat sink is, the higher the heat dissipation efficiency is, but the larger the heat sink is, the larger the area of the control board is, the more limited the control board area is occupied by the heat sink. Moreover, in order to prevent the control panel from being damaged by the flue gas, the electrical box is generally arranged in a relatively closed space isolated from the air duct, so that the heat radiation effect of the control panel adopting the heat radiation principle is poorer.

For another example, the chinese patent application with application number CN202110077392.1 (application publication number CN112930082A) discloses a heat dissipation device for a control board of a range hood, which includes a heat sink disposed in an electrical box and attached to a power module of the control board; the water pipe is arranged in the electrical appliance box and embedded in the radiator; the water pump is arranged outside the electric appliance box, and the outlet of the water pump is connected with the water inlet of the water pipe; the valve body is arranged outside the electric appliance box, a first connecting port of the valve body is connected with a water outlet of the water pipe, and a second connecting port of the valve body is connected with a water return port of the water pump. The water pipe capable of communicating water is embedded in the radiator, so that the water in the water pipe is utilized to improve the heat dissipation of the power module on the control board, the heat dissipation efficiency of the power module on the control board is improved, and the working operation of the range hood in a higher-power mode is met. However, the hot water formed by the cold water of the heat sink after passing through the heat sink and heating is generally cooled naturally or after mixing with the external water flow, and the heat is not effectively utilized, resulting in energy waste.

On the other hand, the check valve of the range hood is usually arranged at the outlet of the air outlet cover, and after the range hood is closed, the outer edge of the check valve can be contacted with the bottom of the air exhaust ring to close the air outlet cover, so that the function of preventing the oil smoke from flowing backwards is achieved. The check valve plays a positive role in blocking the backward flow of the oil smoke. However, after the range hood is used for a long time, oil stains can be accumulated at the bottom of the air exhaust ring of the air outlet cover, after the oil stains are condensed, the check valve can be adhered to the bottom of the air exhaust ring, and after the range hood is opened, the check valve cannot be blown up (or only one valve plate can be blown up), so that the oil smoke sucking and discharging effect of the range hood is reduced.

Therefore, the heat dissipation device for the control panel of the existing range hood needs to be further improved.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a range hood control panel heat dissipation device which can fully utilize the heat recovered in the cooling process of a control panel and avoid the problem of heat waste, aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide a range hood using the above control panel heat dissipation device, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a heat sink for control panel of range hood comprises:

the radiator is arranged on a control panel of the range hood and is provided with a first flow channel for cooling liquid to flow, and the first flow channel is provided with a first inlet and a first outlet;

it is characterized by also comprising:

the heat exchanger is arranged at an air outlet cover of the range hood and is provided with a second flow channel, the second flow channel is provided with a second inlet and a second outlet, the second inlet is communicated with the first outlet, and the second outlet is communicated with the first inlet;

and a liquid pump provided in a flow path formed by the first flow path, the second flow path, and a portion communicating with each other.

In order to improve the heat exchange efficiency between control panel and the radiator, make the control panel dispel the heat fast, the radiator includes:

the heat dissipation plate is attached to the control plate;

and the heat collecting pipe is arranged on the heat radiating plate, and the heat collecting pipe is hollow to form the first flow passage.

In order to increase the contact area between the heat dissipation plate and the heat collection tube, the heat collection tube is arranged on the heat dissipation plate in a bent shape.

Because the power module on the control panel generates heat seriously, in order to realize the pertinence heat dissipation, the control panel is provided with the power module, and the heat dissipation plate is in contact with the power module.

The heat exchanger can adopt and can contact various prior art such as pipe fitting, fin with the play fan housing, in order better with a play fan housing adaptation installation, the heat exchanger includes the heat exchange tube, and this heat exchange tube arranges the periphery of a fan housing, its inside cavity has formed the second runner.

As an improvement, go out the fan housing including the cover body and follow the ring of airing exhaust that the port of the cover body extends along oil smoke flow direction, the port position of the cover body has annular oil trap, it is located to arrange the ring of airing exhaust in the annular oil trap, the heat exchange tube is including being the heliciform the outlying spiral pipe of the cover body and being located in the annular oil trap, the duplex winding is established the outer annular pipe of ring of airing exhaust, the annular pipe with the spiral pipe passes through transition union coupling, correspond to on the cover body the part of annular oil trap has the confession the perforation that the transition pipe passed.

The liquid pump conveys the coolant liquid after heating to the ring-shaped pipe, and the ring-shaped pipe heats the exhaust ring, makes the condensation greasy dirt that is located the ring inboard bottom of airing exhaust melt to inside the flowing into lampblack absorber under the influence of gravity, reducible greasy dirt is in the piling up of the ring inboard bottom of airing exhaust, reduces the risk of check valve and the inboard lower part adhesion of the ring of airing exhaust.

In order to avoid the shortened service life of the liquid pump caused by overhigh temperature of the liquid, the inlet of the liquid pump is connected with the annular pipe, and the outlet of the liquid pump is connected with the radiator.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: the utility model provides an use above-mentioned range hood control panel heat abstractor's range hood, includes the fan frame and is located the air outlet board on fan frame upper portion, the air outlet has been seted up on the air outlet board, it connects to go out the fan casing the air outlet department, the control panel is located the outer wall of air outlet board on, the heat exchange tube with connect through the transfer line between the radiator.

Compared with the prior art, the utility model has the advantages that: the radiator attached to the control panel is communicated with the heat exchanger arranged at the air outlet cover through fluid, wherein the cooling liquid flows to the radiator and can exchange heat with the control panel to achieve the purpose of rapid heat dissipation, and the liquid heated after heat exchange flows to the heat exchanger, so that the air outlet cover can be heated by the carried heat, condensed oil stains on the air outlet cover are melted, and the heat flows into the range hood under the influence of gravity, and the effective recycling of the heat of the control panel is realized. In addition, the exhaust gas of the range hood can take away the redundant heat when passing through the air outlet cover, so that the liquid can be rapidly cooled at the heat exchanger.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a part of a range hood according to an embodiment of the present invention (an electrical box is not shown);

fig. 3 is a vertical perspective sectional view in the front-rear direction of fig. 2;

fig. 4 is a vertical perspective sectional view (heat exchange tube not cut) in the front-rear direction of fig. 2;

fig. 5 is a schematic perspective view of a circuit board heat dissipation device according to an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Referring to fig. 1-5, a range hood includes a fan frame 11, a smoke collecting hood 12, a centrifugal fan 70 and an air outlet hood 20, wherein the smoke collecting hood 12 is disposed at the bottom of the fan frame 11, and the centrifugal fan 70 is disposed in the fan frame 11 for providing negative pressure for sucking and exhausting oil smoke. The top of the fan frame 11 is provided with an air outlet plate 13, and the air outlet plate 13 is provided with an air outlet 130. The outlet housing 20 is connected to the outlet 130 of the outlet plate 13 for connecting an external smoke pipe (not shown), as shown in fig. 1.

The outlet plate 13 is typically provided with an electrical box 31 (fig. 1 shows the electrical box 31), and the control board 30 is provided in the electrical box 31. The control system of the range hood is generally installed on the control board 30, and internal electronic components generate a large amount of heat during operation, especially an IPM module (intelligent power module), which increases control current and heat generation more and more along with the increase of the air volume of the range hood. Rapid heat dissipation from control board 30, particularly the power module, is therefore required.

On the other hand, referring to fig. 3, the air outlet housing 20 of the range hood includes a housing 21 and an air exhausting ring 22 extending from a port of the housing 21 along a flowing direction of the oil smoke, the port of the housing 21 has an annular oil collecting groove 23, and the air exhausting ring 22 is located in the annular oil collecting groove 23 and is used for connecting an external smoke pipe (not shown). The exhaust ring 22 is usually provided with a check valve 24 to prevent the oil smoke from flowing backward. After the range hood is closed, the outer edge of the check valve 24 contacts the bottom of the exhaust ring 22 to close the air outlet cover 20, thereby preventing the oil smoke from flowing backwards. However, after the range hood is used for a long time, the oil stains can be accumulated at the bottom of the air exhaust ring 22 of the air exhaust hood 20, after the oil stains are condensed, the check valve 24 can be adhered to the bottom of the air exhaust ring 22, and after the range hood is opened, the check valve 24 cannot be blown up (or only one valve plate can be blown up), so that the oil smoke suction and exhaust effect of the range hood is reduced.

For this reason, an important inventive point of the present invention is that: the heat collected from the control panel 30 is transferred to the air outlet cover 20 by the heat dissipation device, and the condensed oil stain on the heat is melted, so that the condensed oil stain flows into the range hood under the influence of gravity, the problem of adhesion between the check valve 24 and the bottom of the exhaust ring 22 is avoided, and the purpose of effectively recycling the heat of the control panel 30 is achieved.

Referring to fig. 5, the heat dissipation device of the range hood control panel 30 includes a heat sink 40, a heat exchanger, a liquid pump 60 and a liquid pipe 61. The radiator 40 has a first flow channel (not shown), the heat exchanger has a second flow channel (not shown), the first flow channel has a first inlet 401 and a first outlet 402, the second flow channel has a second inlet 501 and a second outlet 502, wherein the first inlet 401 and the second outlet 502 and the first outlet 402 and the second inlet 501 are communicated through the liquid conveying pipe 61, thereby realizing the circulation flow of the cooling liquid between the first flow channel and the second flow channel. The liquid pump 60 is disposed on the first flow channel, the second flow channel, or a flow path between the first flow channel and the second flow channel, and is used for providing power for circulating the cooling liquid.

The radiator 40 includes a heat radiation plate 41 and a heat collection pipe 42. The heat sink 41 is attached to the control board 30 and contacts the power module on the control board 30. The heat collecting pipe 42 is disposed on the heat dissipating plate 41 in a curved shape (i.e., in a winding shape), and the heat collecting pipe 42 has a hollow interior to form a first flow passage for the cooling liquid to flow in a circulating manner.

The heat exchanger is arranged at the air outlet cover 20 of the range hood. Specifically, the heat exchanger includes a heat exchange pipe 50, the heat exchange pipe 50 is disposed at the periphery of the air outlet housing 20, and the interior thereof is hollow to form a second flow passage for flowing the heated cooling heat. More specifically, the heat exchange pipe 50 includes a spiral pipe 51 spirally arranged on the outer periphery of the cover body 21 and an annular pipe 52 located inside the annular oil sump 23 and wound around the outside of the drain coil 22. Since the exhaust ring 22 is spaced from the cover body 21 by an annular flange 25, the annular tube 52 is connected to the spiral tube 51 by a transition tube 53 (the extending direction of which is substantially the same as the axial direction of the exhaust cover 20), and correspondingly, the annular flange 25 of the cover body 21 has a through hole 250 for the transition tube 53 to pass through, as shown in detail in fig. 3.

The liquid pump 60 conveys the heated cooling liquid to the annular pipe 52, the annular pipe heats the exhaust ring 22, so that condensed oil dirt at the bottom of the inner side of the exhaust ring 22 is melted and flows into the range hood under the influence of gravity, accumulation of the oil dirt at the bottom of the inner side of the exhaust ring 22 can be reduced, and the risk of adhesion of the check valve 24 and the lower part of the inner side of the exhaust ring 22 is reduced. On the other hand, when the gas discharged from the range hood passes through the air outlet cover 20, the redundant heat can be taken away, so that the liquid can be rapidly cooled at the heat exchanger.

Since the temperature of the liquid flowing out of the heat exchanger is low and the temperature of the liquid flowing out of the heat collecting pipe 42 is high, in order to avoid the problem that the service life of the liquid pump 60 is shortened due to the overhigh temperature of the liquid, the temperature of the liquid passing through the liquid pump 60 needs to be relatively low as much as possible, and for this reason, the inlet of the liquid pump 60 in the present embodiment is connected with the annular pipe 52, and the outlet of the liquid pump 60 is connected with the radiator 40.

The term "communication" as used herein refers to the spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., the fluid (gas, liquid or a mixture of both) can flow from the first portion along a flow path or/and be transported to the second portion, and may be direct communication between the first portion and the second portion, or indirect communication between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows the fluid to flow therethrough, or a combination thereof.

Claims

1. A heat sink for control panel of range hood comprises:

the radiator (40) is arranged on a control plate (30) of the range hood and is provided with a first flow channel for cooling liquid to flow, and the first flow channel is provided with a first inlet (401) and a first outlet (402);

it is characterized by also comprising:

the heat exchanger is arranged at an air outlet cover (20) of the range hood and is provided with a second flow channel, the second flow channel is provided with a second inlet (501) and a second outlet (502), the second inlet (501) is communicated with the first outlet (402), and the second outlet (502) is communicated with the first inlet (401);

and a liquid pump (60) provided in a flow path formed by the first flow path, the second flow path, and a portion communicating with each other.

2. The range hood control panel heat sink of claim 1, wherein the heat sink (40) comprises:

a heat dissipation plate (41) attached to the control board (30);

and the heat collecting pipe (42) is arranged on the heat radiating plate (41), and the heat collecting pipe (42) is hollow to form the first flow passage.

3. The range hood control panel heat sink of claim 2, wherein: the heat collecting pipes (42) are arranged on the heat radiating plate (41) in a bent shape.

4. The range hood control panel heat sink of claim 2, wherein: the control board (30) is provided with a power module, and the heat dissipation plate (41) is in contact with the power module.

5. The heat dissipating device for the control panel of the range hood according to any one of claims 1 to 4, wherein: the heat exchanger comprises a heat exchange pipe (50), the heat exchange pipe (50) is arranged on the periphery of the air outlet cover (20), and the interior of the heat exchange pipe is hollow to form the second flow channel.

6. The heat sink for control panel of extractor hood according to claim 5, wherein: go out fan housing (20) including the cover body (21) and from exhaust circle (22) that the port of the cover body (21) extends along oil smoke flow direction, the port position of the cover body (21) has annular oil sump (23), exhaust circle (22) are located in annular oil sump (23), heat exchange tube (50) are including being the heliciform and arranging cover body (21) outlying spiral pipe (51) and being located in annular oil sump (23), the duplex winding establish annular pipe (52) outside exhaust circle (22), annular pipe (52) with spiral pipe (51) are connected through transition pipe (53), correspond to on the cover body (21) the part of annular oil sump (23) has the confession perforation (250) that transition pipe (53) passed.

7. The heat sink for control panel of extractor hood according to claim 6, wherein: the inlet of the liquid pump (60) is connected to the annular pipe (52), and the outlet of the liquid pump (60) is connected to the radiator (40).

8. A range hood applying the range hood control panel heat dissipation device of any one of claims 1-7, characterized in that: include fan frame (11) and be located air outlet plate (13) on fan frame (11) upper portion, air outlet (130) have been seted up on air outlet plate (13), it connects to go out fan housing (20) air outlet (130) department, control panel (30) are located the outer wall of air outlet plate (13) on, heat exchange tube (50) with connect through transfer line (61) between radiator (40).