CN109724248B

CN109724248B - water heater

Info

Publication number: CN109724248B
Application number: CN201910169384.2A
Authority: CN
Inventors: 奚洋; 刘纯; 吴彦东; 张裕兆
Original assignee: Midea Group Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Midea Group Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2023-12-26
Anticipated expiration: 2039-03-06
Also published as: CN109724248A

Abstract

The invention provides a water heater, which comprises a heat exchanger and a fan, and further comprises: the shell is provided with a hollow cavity, the heat exchanger and the fan are arranged in the cavity, and the top wall and/or the bottom wall of the shell are/is provided with a notch; the concave part is arranged on the side wall of the shell and communicated with the notch; the air return port is arranged on the concave part and communicated with the cavity, and the air return port is arranged opposite to the heat exchanger; the air outlet is arranged on the shell and is communicated with the cavity, the heat exchanger is positioned between the air return inlet and the fan, and the fan is communicated with the air outlet. According to the invention, through reasonably arranging the structure of the water heater, the requirement of the water heater on the installation space and the occupancy rate of the water heater on the space are reduced, the utilization rate of the product on the user space is improved to the greatest extent, and meanwhile, as the side wall provided with the concave part on the shell is contacted with the wall installation surface, namely, the concave part is shielded by the wall, the aesthetic property, the visibility and the overall streamline of the appearance of the product are not damaged.

Description

Water heater

Technical Field

The invention relates to the technical field of water heaters, in particular to a water heater.

Background

At present, the integral heat pump water heater in the market is mainly divided into a floor type vertical heat pump water heater and a horizontal wall type heat pump water heater. Under normal conditions, the horizontal wall-mounted heat pump water heater adopts a side return air top outlet mode to conduct air flow, and the air flow mode enables an air return opening to be exposed when the water heater is installed, so that the appearance is affected. Therefore, in order to solve the above problem, the airflow circulation is performed by improving the mode of adopting the rear return air top outlet, but in order to ensure the return air requirement and the return air area of the product, the rear side of the heat pump water heater provided with the return air inlet is required to be ensured to be incompletely attached to the wall body mounting surface during mounting, so that the utilization rate of the product to the space is reduced, and the user experience is poor.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, an aspect of the present invention proposes a water heater.

In view of this, an aspect of the present invention proposes a water heater, the water heater including a heat exchanger and a fan, the water heater further comprising: the shell is provided with a hollow cavity, the heat exchanger and the fan are arranged in the cavity, and the top wall and/or the bottom wall of the shell are/is provided with a notch; the concave part is arranged on the side wall of the shell and communicated with the notch; the air return port is arranged on the concave part and communicated with the cavity, and the air return port is arranged opposite to the heat exchanger; the air outlet is arranged on the shell and is communicated with the cavity, the heat exchanger is positioned between the air return inlet and the fan, and the fan is communicated with the air outlet.

When the water heater provided by the invention works, main air flow enters the shell from the air return port under the action of the fan, and flows out of the water heater from the air outlet after sequentially passing through the heat exchanger and the fan, when the air flow flows through the heat exchanger, the heat exchanger absorbs heat in the air flow, and under the action of temperature difference, water vapor is condensed on a coil pipe of the heat exchanger to form condensed water, so that the effect of removing moisture in indoor environment is realized; further, as the concave part is arranged on the side wall of the shell and is communicated with the notch, when the water heater is assembled, the side wall of the shell provided with the concave part is contacted with the wall body mounting surface, and the structure of the concave part enables the air return port to be arranged on the shell in an embedded mode, so that even if the water heater is completely attached to the wall body mounting surface, the air return port cannot be blocked, at the moment, indoor air flows into the air return port through the notch on the top wall and/or the bottom wall of the shell and then enters the shell, the structure reduces the requirement of the water heater on the mounting space and reduces the occupancy rate of the water heater on the space, and the utilization rate of products on the user space is improved to the maximum extent; further, since the side wall of the housing provided with the recess portion is in contact with the wall mounting surface, that is, the recess portion is covered by the wall, the aesthetic property, the visibility and the overall fluidity of the product appearance are not impaired.

Specifically, the depressed part and the casing are integrated, that is, the depressed part is the structure that the partial lateral wall of casing is sunken to form, and mechanical properties of integrated structure is good, therefore can ensure the joint strength between depressed part and the casing, in addition, can also make depressed part and casing an organic whole, batch production to improve the production efficiency of product, reduce the manufacturing cost of product. Of course, can also the depressed part be split type structure with the casing, the depressed part detachably sets up on the casing, like this, the follow-up dismantlement of being convenient for, maintenance and washing, simultaneously, can be in the same place with the casing assembly of the depressed part that is provided with different structure shape return air inlets according to specific actual conditions to promote the use universality and the adaptability of product.

The water heater according to the invention can also have the following additional technical characteristics:

in the above technical solution, preferably, the water heater further includes: the first return air compensation opening is arranged on the bottom wall of the concave part and is communicated with the cavity; the first return air compensation opening is positioned between the return air opening and the bottom wall of the shell.

In this technical scheme, through set up first return air compensation mouth on the diapire of depressed part for first return air compensation mouth is linked together with the cavity, and first return air compensation mouth cooperatees with the return air mouth, with the increase return air area, the maximized assurance return air amount of wind. The structure setting of first return air compensation mouth makes the water heater during operation, can borrow first return air compensation mouth from the cavity in induced draft, promptly, make the air current that has flowed through the electric device in the cavity flow into the return air mouth by first return air compensation mouth, and then realized the effect of cooling down to the electric device in the cavity, with the temperature rise of reducing the electric device, guaranteed the ambient temperature of product operation, be favorable to promoting the life of product, simultaneously, have thermal air current to flow through the heat exchanger, be favorable to promoting heat exchange efficiency, and then promote the operating efficiency of product.

Specifically, first return air compensation mouth and return air inlet interval set up, have restricted the flow path of the air current of flowing through first return air compensation mouth and return air inlet like this, and the air current in the cavity flows into the return air inlet by first return air compensation mouth promptly, and this structure sets up the air current that has reduced in the external environment flows into the air current in the casing by first return air compensation mouth, and then has realized the purpose of cooling down to the electrical component in the cavity.

In any of the above solutions, preferably, the water heater further includes: the baffle is arranged on the bottom wall of the concave part and is positioned between the bottom wall of the shell and the first return air compensation opening; the electric control assembly is arranged in the shell and is opposite to the baffle.

In this technical scheme, through setting up the baffle for the baffle is located between diapire and the first return air compensation mouth of casing, like this, sets up electrical control assembly in the casing, and makes electrical control assembly and baffle set up relatively, and the baffle cooperatees with the first return air compensation mouth, in order to guarantee the flow path of the air current in the cavity. If no baffle is arranged, heat generated during the operation of the electric control assembly can be leaked to the environment from the bottom of the shell under the action of partial air flow, and then the air flow paths between the air return opening and the first air return compensation opening and at the air return opening cannot be ensured, so that the frequency of occurrence of phenomena such as air flow separation, vortex and the like is easily increased, the running noise of products is increased, and the user experience is poor.

In any of the above solutions, preferably, the water heater further includes: the second return air compensation opening is arranged on the side wall of the concave part and is communicated with the cavity; the energy storage part is arranged in the shell and is close to the second return air compensation opening.

In this technical scheme, through set up the second return air compensation mouth on the lateral wall of depressed part for the second return air compensation mouth is linked together with the cavity, and the second return air compensation mouth cooperatees with the return air mouth, with the increase return air area, the maximized assurance return air amount of wind.

In any of the above solutions, preferably, the water heater further includes: the bottom return air inlet is arranged on the bottom wall of the shell and is communicated with the cavity.

In this technical scheme, through set up the bottom return air inlet on the diapire of casing to make bottom return air inlet and cavity be linked together, bottom return air inlet and first return air compensation mouth and return air inlet cooperate, with the increase return air area, the maximized return air amount of wind of having guaranteed. When the water heater works, external environment air flow enters the cavity through the bottom air return opening, then flows into the air return opening through the first air return compensation opening, and the air flow flowing in through the bottom air return opening can also bring heat generated when the electric device (such as an electric control assembly) works, so that the effect of effectively reducing the surface working temperature of the electric device is achieved.

In any of the above solutions, preferably, the water heater further includes: the hanging plate is detachably arranged on the side wall of the shell, and the hanging plate and the concave part are positioned on the same side of the shell; the hanging plate is provided with a hook, and the hanging plate is clamped with the shell through the hook.

In this technical scheme, through setting up the link plate, the link plate sets up for the detachable structure of casing for when assembling the water heater, at first with link plate and wall body assembly together, and then assemble casing and link plate, this structure sets up steadiness and the reliability of guaranteeing the water heater assembly, has realized the effective articulated of water heater. Meanwhile, the structure is arranged under the condition of ensuring the assembly strength of the product, so that the installation thickness of the product can be reduced, and the size of the product can be reduced. The hanging plate is assembled with the wall body at first, so that the installation size of the hanging plate relative to the wall body can be intuitively adjusted, the assembly size of the shell relative to the wall body is further ensured, the assembly difficulty of a product is reduced through the structure, and the improvement of the assembly precision of the product is facilitated.

In addition, through set up the couple on the link plate for the link plate passes through couple and casing looks joint, and wherein, the quantity of couple is a plurality of, and a plurality of couples equipartitions are in the link plate, just so can guarantee the installation dimension of water heater for the wall body, and then guaranteed the homogeneity and the uniformity of the power of effect in couple department, in order to prolong the life of link plate.

In any of the above technical solutions, preferably, an opening end of the recess is provided with a flange.

In this technical scheme, through being provided with the turn-ups at the open end of depressed part, like this, when water heater and wall subsides, the turn-ups support to establish on the wall body to guarantee the relative closure of air current flow path, realized the effective restriction to air current flow path, simultaneously, avoided the air current to flow into external environment through the clearance of the open end of depressed part and wall body, reduced the frequency that the air current flows the emergence of phenomena such as separation, stall, vortex, and then can reduce the running noise of product. And this structure sets up the effect that can play sealed water heater and wall body's assembly clearance, and then shelter from the depressed part, has promoted aesthetic property and the visibility of product outward appearance.

In any of the above embodiments, preferably, the flange extends in a direction from the bottom wall to the top wall of the housing.

In the technical scheme, the flanging extends along the direction from the bottom wall to the top wall of the shell, so that the effect of sealing the assembly gap between the water heater and the wall body is achieved in the direction from the bottom wall to the top wall of the shell, and the attractiveness of the assembled water heater and the wall body is guaranteed. Meanwhile, the structure reduces the material investment of flanging under the condition of ensuring the visibility and the aesthetic property of product assembly, thereby reducing the production cost.

In any of the above technical solutions, preferably, the air outlet is an arc air outlet recessed toward the bottom wall of the housing; and/or the air return opening is an arc-shaped air opening which is recessed away from the direction of the opening end of the recessed part.

In this technical scheme, through setting up the arc wind gap that makes the air outlet be sunken for the diapire direction towards the casing to/or the return air inlet is for deviating from sunken portion open end direction sunken arc wind gap, has shortened the distance of return air inlet to air outlet like this, so, has reduced the windage that the air current flows in the casing, under the same electric power, the amount of wind increases, and then is favorable to improving the work efficiency and the heating capacity of water heater.

In any of the above technical solutions, preferably, the return air inlet is composed of a plurality of sub-air inlets distributed in an array.

In the technical scheme, the air return port consists of a plurality of sub-air ports distributed in an array, so that the air return requirements at a plurality of angles and a plurality of directions are met, and the air return area and the air return quantity are increased; furthermore, the structure can effectively prevent foreign matters, water vapor and the like from entering the shell, and plays a role in filtering air flow; further, the structure is arranged to protect the heat exchanger located in the shell, namely, the fence is arranged outside the heat exchanger, so that the situation that a hard object is directly contacted with the heat exchanger is avoided.

In any of the above solutions, preferably, the water heater further includes: the first air return port is arranged on the side wall of the shell, close to the heat exchanger, and penetrates through the side wall of the concave part, and is communicated with the air return port; the extending length of the first air return opening along the direction from the opening end of the concave part to the bottom wall of the concave part does not exceed the distance from the heat exchanger to the opening end of the concave part.

In this technical scheme, through setting up first return air inlet for first return air inlet sets up on the side wall of the casing side wall that is close to the heat exchanger, and makes first return air inlet run through the lateral wall of depressed part, just so makes first return air inlet and return air inlet be linked together, and then has increased the return air area, and the maximized assurance return air amount is favorable to promoting the work efficiency of product. In addition, through limiting the extending length of the first air return opening along the direction from the opening end of the concave part to the bottom wall of the concave part not to exceed the distance from the heat exchanger to the opening end of the concave part, a structural basis is provided for the normal operation of the heat exchanger under the condition of ensuring the increased return air volume during the operation of the product, and if the extending length of the first air return opening along the direction from the opening end of the concave part to the bottom wall of the concave part exceeds the distance from the heat exchanger to the opening end of the concave part, the situation that part of air flow entering the cavity through the first air return opening does not flow through the heat exchanger occurs, so that the operation energy consumption of the product can be increased.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 shows a schematic structural view of a water heater according to an embodiment of the present invention;

FIG. 2 illustrates a front view of a water heater according to one embodiment of the present invention;

FIG. 3 is a rear view of the water heater of the embodiment of FIG. 2;

FIG. 4 is a top view of the water heater of the embodiment of FIG. 2;

FIG. 5 is a bottom view of the water heater of the embodiment of FIG. 2;

FIG. 6 shows a partial schematic view of a water heater according to an embodiment of the present invention;

fig. 7 shows a schematic structural view of a water heater according to another embodiment of the present invention.

The correspondence between the reference numerals and the component names in fig. 1 to 7 is:

1 water heater, 10 evaporator, 20 fan, 30 casing, 302 breach, 40 depressed part, 402 turn-ups, 50 return air inlet, 60 air outlet, 70 first return air compensation mouth, 80 baffles, 90 electric control assembly, 100 second return air compensation mouth, 110 energy storage portion, 120 bottom return air inlet, 130 link plate, 140 couple, 150 throttling portion, 160 wind-guiding box, 170 compressor, 180 first return air inlet.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

The following describes a water heater 1 according to some embodiments of the present invention with reference to fig. 1 to 7.

As shown in fig. 1 to 6, an embodiment of the present invention proposes a water heater 1, the water heater 1 including a heat exchanger and a fan 20, the water heater 1 further including: the shell 30 is provided with a hollow cavity, the heat exchanger and the fan 20 are arranged in the cavity, and a notch 302 is formed in the top wall and/or the bottom wall of the shell 30; the concave part 40 is arranged on the side wall of the shell 30, and the concave part 40 is communicated with the notch 302; the air return port 50 is arranged on the concave part 40 and communicated with the cavity, and the air return port 50 is arranged opposite to the heat exchanger; the air outlet 60 is arranged on the shell 30 and communicated with the cavity, the heat exchanger is positioned between the air return opening 50 and the fan 20, and the fan 20 is communicated with the air outlet 60.

When the water heater 1 provided by the invention works, main air flow enters the shell 30 from the air return port 50 under the action of the fan 20, and flows out of the water heater 1 from the air outlet 60 after sequentially passing through the heat exchanger and the fan 20, when the air flow passes through the heat exchanger, the heat exchanger absorbs heat in the air flow, under the action of temperature difference, water vapor is condensed on a coil pipe of the heat exchanger, and condensed water is formed, so that the effect of removing moisture in indoor environment is realized; further, since the recess 40 is disposed on the side wall of the housing 30 and the recess 40 is communicated with the notch 302, when the water heater 1 is assembled, the side wall of the housing 30 provided with the recess 40 contacts with the wall mounting surface, the structure of the recess 40 enables the air return port 50 to be embedded in the housing 30, so that the air return port 50 is not blocked even if the water heater 1 is completely attached to the wall mounting surface, at this time, indoor air flows into the air return port 50 through the notch 302 on the top wall and/or the bottom wall of the housing 30, and then enters the housing 30, the structure reduces the requirement of the water heater 1 on the mounting space and reduces the space occupation rate of the water heater 1, and the utilization rate of products on the user space is improved to the maximum extent; further, since the side wall of the housing 30 provided with the recess 40 is in contact with the wall mounting surface, that is, the recess 40 is covered by the wall, the aesthetic appearance, the visibility and the overall fluidity of the product are not impaired. Wherein fig. 2 shows a partial structure of the housing 30.

Specifically, the recess 40 and the housing 30 are integrated, that is, the recess 40 is formed by recessing a portion of the side wall of the housing 30, so that the mechanical property of the integrated structure is good, and the connection strength between the recess 40 and the housing 30 can be ensured. Of course, the recess 40 and the housing 30 may be in a split structure, and the recess 40 is detachably disposed on the housing 30, so that the subsequent disassembly, maintenance and cleaning are facilitated, and meanwhile, the recess 40 with the return air inlet 50 having different structural shapes and the housing 30 may be assembled together according to specific practical situations, so as to promote the use universality and adaptability of the product.

In a specific embodiment, the water heater 1 is a heat pump water heater, the heat exchanger is an evaporator 10, and the air outlet 60 is disposed on the top wall of the housing 30.

In a specific embodiment, the top and bottom walls of the housing 30 are provided with indentations 302, and the recess 40 communicates with the indentations 302, i.e., the recess 40 communicates with the top and bottom walls of the housing 30.

In one embodiment of the present invention, preferably, as shown in fig. 1, the water heater 1 further comprises: the first return air compensating port 70 is arranged on the bottom wall of the concave part 40 and is communicated with the cavity; the return air inlet 50 is located on the bottom wall of the recess 40, and the first return air compensating inlet 70 is located between the return air inlet 50 and the bottom wall of the housing 30.

In this embodiment, the first return air compensating port 70 is disposed on the bottom wall of the recess 40, so that the first return air compensating port 70 is communicated with the cavity, and the first return air compensating port 70 is matched with the return air port 50, so as to increase the return air area and maximally ensure the return air volume. The structure setting of first return air compensation mouth 70 makes the during operation of water heater 1, can borrow first return air compensation mouth 70 to induced draft from the cavity, promptly, make the air current that has flowed through the electric device in the cavity flow into return air mouth 50 by first return air compensation mouth 70, and then realized the effect of cooling down to the electric device in the cavity, with the temperature rise that reduces the electric device, guaranteed the ambient temperature of product operation, be favorable to promoting the life of product, simultaneously, have thermal air current to flow through the heat exchanger, be favorable to promoting heat exchange efficiency, and then promote the operating efficiency of product.

Specifically, the first return air compensating port 70 is spaced from the return air port 50, so that a flow path of the air flowing through the first return air compensating port 70 and the return air port 50 is defined, that is, the air in the cavity flows into the return air port 50 from the first return air compensating port 70, and the structure reduces the air flow in the external environment from the first return air compensating port 70 into the casing 30, so that the purpose of cooling the electric devices in the cavity is achieved.

In one embodiment of the present invention, preferably, as shown in fig. 3, the water heater 1 further comprises: the baffle 80 is arranged on the bottom wall of the concave part 40, and the baffle 80 is positioned between the bottom wall of the shell 30 and the first return air compensating port 70; the electronic control assembly 90 is disposed in the housing 30 opposite to the baffle 80.

In this embodiment, the baffle 80 is disposed such that the baffle 80 is located between the bottom wall of the housing 30 and the first return air compensating port 70, such that the electronic control assembly 90 is disposed in the housing 30 and such that the electronic control assembly 90 is disposed opposite the baffle 80, and such that the baffle 80 cooperates with the first return air compensating port 70 to ensure a flow path for the airflow within the cavity. If the baffle 80 is not provided, heat generated during operation of the electronic control assembly 90 can leak from the bottom of the housing 30 to the environment under the action of a part of air flow, and thus an air flow path between the air return inlet 50 and the first air return compensation inlet 70 and at the air return inlet 50 cannot be ensured, so that the frequency of occurrence of phenomena such as air flow separation, vortex and the like is easily increased, and the operation noise of the product is increased, so that the user experience is poor.

Specifically, the baffle 80 and the concave portion 40 are of an integrated structure, and the mechanical property of the integrated structure is good, so that the connection strength between the baffle 80 and the concave portion 40 can be ensured, and in addition, the baffle 80 and the concave portion 40 can be integrally manufactured, so that the production efficiency of products is improved, and the production and processing costs of the products are reduced. Of course, the baffle 80 and the recess 40 may be separate structures, and the baffle 80 may be detachably disposed on the recess 40, so as to facilitate subsequent disassembly, maintenance and cleaning.

In one embodiment of the present invention, preferably, as shown in fig. 1 and 6, the water heater 1 further comprises: the second return air compensating port 100 is arranged on the side wall of the concave part 40 and is communicated with the cavity; the energy storage portion 110 is disposed in the housing 30 and near the second return air compensating port 100.

In this embodiment, the second return air compensating port 100 is disposed on the side wall of the recess 40, so that the second return air compensating port 100 is communicated with the cavity, and the second return air compensating port 100 is matched with the return air port 50, so as to increase the return air area and maximally ensure the return air volume.

In one embodiment of the present invention, preferably, as shown in fig. 5, the water heater 1 further comprises: the bottom return air inlet 120 is disposed on the bottom wall of the housing 30 and is in communication with the cavity.

In this embodiment, by providing the bottom return air port 120 on the bottom wall of the housing 30 and communicating the bottom return air port 120 with the cavity, the bottom return air port 120 is matched with the first return air compensation port 70 and the return air port 50 to increase the return air area, and the return air volume is ensured to the greatest extent. When the water heater 1 is in operation, the air flow from the external environment enters the cavity through the bottom air return opening 120, and then flows into the air return opening 50 through the first air return compensation opening 70, and the air flow flowing in from the bottom air return opening 120 can also carry heat generated during operation of the electrical device (e.g. the electrical control assembly 90), so as to effectively reduce the surface operating temperature of the electrical device.

In one embodiment of the present invention, preferably, as shown in fig. 1 and 3, the water heater 1 further comprises: the hanging plate 130 is detachably arranged on the side wall of the shell 30, and the hanging plate 130 and the concave part 40 are positioned on the same side of the shell 30; the hanging plate 130 is provided with a hook 140, and the hanging plate 130 is clamped with the shell 30 through the hook 140.

In this embodiment, by arranging the hanging plate 130, the hanging plate 130 is arranged relative to the detachable structure of the casing 30, so that when the water heater 1 is assembled, the hanging plate 130 is assembled with the wall body, and then the casing 30 is assembled with the hanging plate 130, the structure ensures the stability and reliability of the assembly of the water heater 1, and the effective hanging of the water heater 1 is realized. Meanwhile, the structure is arranged under the condition of ensuring the assembly strength of the product, so that the installation thickness of the product can be reduced, and the size of the product can be reduced. Because the hanging plate 130 is assembled with the wall body at first, the installation size of the hanging plate 130 relative to the wall body can be intuitively adjusted, and further the assembly size of the shell 30 relative to the wall body is ensured.

In addition, through set up couple 140 on link plate 130 for link plate 130 passes through couple 140 and the looks joint of casing 30, and wherein, couple 140 quantity is a plurality of, and a plurality of couples 140 equipartitions are in link plate 130, just so can guarantee the installation size of water heater 1 for the wall body, and then guaranteed the homogeneity and the uniformity of the power of effect in couple 140 department, in order to prolong link plate 130's life.

In one embodiment of the present invention, the open end of the recess 40 is preferably provided with a flange 402, as shown in fig. 4.

In this embodiment, the flange 402 is disposed at the open end of the recess 40, so that when the water heater 1 is attached to the wall, the flange 402 is abutted against the wall, so as to ensure the relative sealing of the airflow path, thereby effectively defining the airflow path, avoiding that the airflow flows into the external environment through the gap between the open end of the recess 40 and the wall, reducing the frequency of occurrence of phenomena such as airflow flow separation, vortex and the like, and further reducing the operation noise of the product. And this structure setting can play sealed water heater 1 and the effect of the fit-up gap of wall body, and then shelter from depressed part 40, has promoted aesthetic property and the visibility of product outward appearance.

In one embodiment of the present invention, flange 402 preferably extends in the direction from the bottom wall to the top wall of housing 30.

In this embodiment, the flange 402 extends along the bottom wall to top wall of the housing 30, so that the flange functions to seal the assembly gap between the water heater 1 and the wall in the bottom wall to top wall direction of the housing 30, so as to ensure the aesthetic appearance of the assembled water heater 1 and wall. Meanwhile, the structure reduces the material investment of the flanging 402 under the condition of ensuring the visibility and the aesthetic property of product assembly, thereby reducing the production cost.

In one embodiment of the present invention, the air outlet 60 is preferably an arc-shaped air outlet recessed toward the bottom wall of the housing 30; and/or the return air inlet 50 is an arcuate air inlet recessed away from the open end of the recess 40.

In this embodiment, by providing the air outlet 60 as an arc-shaped air outlet recessed toward the bottom wall of the housing 30 and/or the air return inlet 50 as an arc-shaped air outlet recessed away from the opening end direction of the recess 40, the distance from the air return inlet 50 to the air outlet 60 is shortened, so that the wind resistance of the air flow flowing in the housing 30 is reduced, and the air volume is increased under the same electric power, thereby being beneficial to improving the working efficiency and heating capacity of the water heater 1.

In one embodiment of the present invention, the return air inlet 50 is preferably comprised of a plurality of sub-air inlets distributed in an array.

In this embodiment, the air return opening 50 is composed of a plurality of sub-air openings distributed in an array, so as to realize the air return requirements at a plurality of angles and a plurality of directions, so as to increase the air return area and the air return quantity; further, the structure can effectively prevent foreign matters, water vapor and the like from entering the shell 30, and plays a role in filtering air flow; further, the structural arrangement protects the heat exchanger located within the housing 30, i.e., forms a fence outside the heat exchanger, preventing hard objects from directly contacting the heat exchanger.

In one embodiment of the present invention, preferably, as shown in fig. 7, the water heater 1 further comprises: the first air return port 180 is arranged on the side wall of the shell 30, which is close to the heat exchanger, the first air return port 180 penetrates through the side wall of the concave part 40, and the first air return port 180 is communicated with the air return port 50; wherein, the extension length of the first air return opening 180 along the direction from the opening end of the recess 40 to the bottom wall of the recess 40 does not exceed the distance from the heat exchanger to the opening end of the recess 40.

In this embodiment, by setting the first air return opening 180, the first air return opening 180 is disposed on a side wall of the shell 30 close to the heat exchanger, and the first air return opening 180 penetrates through a side wall of the recess 40, so that the first air return opening 180 is communicated with the air return opening 50, the air return area is increased, the air return air volume is ensured to the greatest extent, and the work efficiency of the product is improved. In addition, by defining the distance from the heat exchanger to the open end of the recess 40 in the direction from the open end of the recess 40 to the bottom wall of the recess 40, the length of the first return air opening 180 does not exceed the distance from the heat exchanger to the open end of the recess 40, a structural basis is provided for the normal operation of the heat exchanger under the condition of ensuring the increased return air volume during the product operation, and if the length of the first return air opening 180 exceeds the distance from the heat exchanger to the open end of the recess 40 in the direction from the open end of the recess 40 to the bottom wall of the recess 40, the situation that part of the air flow entering the cavity through the first return air opening 180 does not flow through the heat exchanger occurs, thereby increasing the operation energy consumption of the product.

In a specific embodiment, as shown in fig. 6, the water heater 1 further includes: a throttle section 150, a wind guide box 160, and a compressor 170.

In a specific embodiment, the fan 20 is a centrifugal fan, preferably, is designed to be a structure to be static pressure, and is designed to be an air duct mode capable of receiving an air duct because the installation scene of the water heater 1 is mainly in a bathroom or a balcony, and because cold air is continuously generated during the hot water making due to the working principle of the heat pump system of the water heater 1, the bad experience of the user is solved.

In a specific embodiment, the water heater 1 further includes a cover plate, and the cover plate is disposed at the opening end of the recess portion 40, so that even if the air flow is circulated by adopting the side return air top outlet, the return air inlet 50 can be blocked by the cover plate, so as to ensure the aesthetic property, the visibility and the overall flow linearity of the product appearance.

In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water heater comprising a heat exchanger and a fan, the water heater further comprising:

the shell is provided with a hollow cavity, the heat exchanger and the fan are arranged in the cavity, and the top wall and the bottom wall of the shell are provided with notches;

the concave part is arranged on the side wall of the shell and communicated with the notch, the concave part is communicated with the top wall and the bottom wall of the shell, and the side wall provided with the concave part can be in contact with a wall body mounting surface;

the air return port is arranged on the concave part and communicated with the cavity, and the air return port is arranged opposite to the heat exchanger;

the air outlet is arranged on the shell and is communicated with the cavity, the heat exchanger is positioned between the air return opening and the fan, and the fan is communicated with the air outlet.

2. The water heater as recited in claim 1, further comprising:

the first return air compensation opening is arranged on the bottom wall of the concave part and is communicated with the cavity;

the first return air compensation opening is positioned between the return air opening and the bottom wall of the shell.

3. The water heater as recited in claim 2, further comprising:

the baffle is arranged on the bottom wall of the concave part and is positioned between the bottom wall of the shell and the first return air compensation opening;

the electric control assembly is arranged in the shell and is opposite to the baffle.

4. A water heater as claimed in any one of claims 1 to 3, further comprising:

the second return air compensation opening is arranged on the side wall of the concave part and is communicated with the cavity;

and the energy storage part is arranged in the shell and is close to the second return air compensation opening.

5. A water heater as claimed in any one of claims 1 to 3, further comprising:

the bottom air return opening is arranged on the bottom wall of the shell and is communicated with the cavity.

6. A water heater as claimed in any one of claims 1 to 3, further comprising:

the hanging plate is detachably arranged on the side wall of the shell, and the hanging plate and the concave part are positioned on the same side of the shell;

the hanging plate is provided with a hook, and the hanging plate is clamped with the shell through the hook.

7. A water heater as claimed in any one of claims 1 to 3, wherein,

the open end of the concave part is provided with a flanging.

8. The water heater of claim 7, wherein the water heater is configured to provide water from the water heater,

the turn-over extends in a direction from the bottom wall to the top wall of the housing.

9. A water heater as claimed in any one of claims 1 to 3, wherein,

the air outlet is an arc-shaped air outlet which is sunken towards the bottom wall direction of the shell; and/or

The air return opening is an arc-shaped air opening which is sunken away from the direction of the opening end of the sunken part.

10. A water heater as claimed in any one of claims 1 to 3, further comprising:

the first air return port is arranged on the side wall of the shell, close to the heat exchanger, and penetrates through the side wall of the concave part, and the first air return port is communicated with the air return port;

the extending length of the first air return opening along the direction from the opening end of the concave part to the bottom wall of the concave part does not exceed the distance from the heat exchanger to the opening end of the concave part.