CN111486586B

CN111486586B - Water heater

Info

Publication number: CN111486586B
Application number: CN201910079024.3A
Authority: CN
Inventors: 张世美; 王明; 钟国荣
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2022-05-20
Anticipated expiration: 2039-01-28
Also published as: CN111486586A

Abstract

The invention discloses a water heater, which comprises a shell, wherein a water passing cavity is defined in the shell; a water inlet pipe connected with the housing to supply water into the housing; the water outlet pipe is connected with the shell to discharge water in the shell; the heating element is arranged in the shell, and a wiring end of the heating element penetrates out of the shell; the water diversion piece, the water diversion piece is located the bottom of casing and will cross the water cavity and separate in vertical direction for with the water flow way that the outlet pipe switched on and with the water diversion runner that the inlet tube switched on, the water diversion piece be equipped with a plurality of with the water diversion hole that the water flow way switched on, just the water diversion piece is constructed to make rivers in the inlet tube pass through in proper order the water diversion runner the water diversion hole gets into behind the water flow way, follow the outlet pipe is discharged. The water heater provided by the embodiment of the invention has the advantages of simple structure, high heat exchange efficiency, low failure rate and safety in use.

Description

Water heater

Technical Field

The invention relates to the field of domestic appliances, in particular to a water heater.

Background

The instant water heater in the related art generally adopts water inlet from the bottom and water outlet from the top of the shell, and the instant water heater needs to rapidly heat water to hot water with higher temperature, so that the shell has relatively small volume and higher heating power.

However, because the interval between casing bottom and the top is shorter, rivers get into the casing from the bottom and scatter out after disorderly, flow out from the top in short time again, in this process, the contact between water and the heat-generating body is inhomogeneous, and contact time is shorter, and then lead to the heat utilization relatively poor, simultaneously, because the heat density of heat-generating body is great and with the rivers between the contact insufficient, also lead to the silk of burning, the pipe explosion easily, the electric leakage and close rivers inner bag situation such as temperature rise height, cause the heat-generating body life-span short or make the user begin in several seconds in normal use in the dangerous condition such as the water scald hand of suddenly by high temperature.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a water heater, which has a simple structure, high heat exchange efficiency, low failure rate and safe use.

The water heater comprises a shell, wherein a water passing cavity is defined in the shell; a water inlet pipe connected with the housing to supply water into the housing; the water outlet pipe is connected with the shell to discharge water in the shell; the heating element is arranged in the shell, and a wiring end of the heating element penetrates out of the shell; the water diversion piece, the water diversion piece is located the bottom of casing and will cross the water cavity and separate in vertical direction for with the water flow way that the outlet pipe switched on and with the water diversion runner that the inlet tube switched on, the water diversion piece be equipped with a plurality of with the water diversion hole that the water flow way switched on, just the water diversion piece is constructed to make rivers in the inlet tube pass through in proper order the water diversion runner the water diversion hole gets into behind the water flow way, follow the outlet pipe is discharged.

According to the water heater provided by the embodiment of the invention, the flow guide piece is arranged in the water heater, and the flow guide piece is provided with the plurality of flow guide holes, so that the flow guide piece is used for guiding the water flow entering the water passing cavity, meanwhile, the flow guide holes are used for uniformly controlling the water flow, the contact uniformity between the water flow and the heating body is improved, the heat convection time is prolonged, the heat transfer efficiency between the water flow and the heating body is further enhanced, the heating efficiency of the water heater is improved, and in addition, the heat of the heating body can be effectively taken away by the water flow, so that the failure rate of the heating body is reduced, the service life is prolonged, and the use safety is improved.

According to some embodiments of the invention, the flow guide channel extends spirally from outside to inside in a circumferential direction of the flow guide member.

According to some examples of the invention, the middle of the flow guiding element is provided with an avoidance hole, one end of the water outlet pipe is arranged outside the shell, and the other end of the water outlet pipe penetrates through the shell and the avoidance hole and extends into the water flow channel.

According to some examples of the invention, the flow guide comprises: the top plate is provided with a plurality of flow guide holes which are communicated along the thickness direction of the top plate, and the middle part of the top plate is provided with the avoidance holes which are communicated along the thickness direction of the top plate; the guide plate, the guide plate is located the roof with between the diapire of casing, just the guide plate with the roof the diapire of casing prescribes a limit to jointly the water conservancy diversion runner.

According to some examples of this invention, the baffle comprises: the inner surrounding plate is annularly arranged along the edge of the avoidance hole and is arranged between the top plate and the bottom wall of the shell; a peripheral plate annularly arranged along a peripheral edge of the top plate and located between the top plate and the bottom wall of the housing; and one end of the middle enclosing plate is connected with the peripheral plate, and the other end of the middle enclosing plate extends between the inner enclosing plate and the peripheral plate along the circumferential direction and is spaced from the inner enclosing plate and the peripheral plate to form the flow guide flow channel.

According to some examples of the invention, a lower end of the inner shroud is in abutting contact with a bottom wall of the housing, and an outer peripheral wall of the outer peripheral plate is in abutting contact with an inner peripheral wall of the housing.

According to some examples of the invention, the top plate is integrally formed with the baffle.

According to some embodiments of the invention, the plurality of guide holes are provided at the top of the guide member and are spaced apart in the extending direction of the guide flow passage.

According to some examples of the invention, the sum of the areas of the plurality of the flow guide holes is larger than the area of the water inlet pipe.

According to some embodiments of the invention, the water inlet of the water outlet pipe is arranged adjacent to the top wall of the housing and is vertically higher than the communication between the water inlet pipe and the diversion flow passage.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a water heater according to one embodiment of the present invention;

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

FIG. 3 is a schematic view of a flow guide of a water heater according to one embodiment of the invention;

FIG. 4 is a bottom view of a baffle of a water heater according to one embodiment of the present invention;

FIG. 5 is a front view of a water heater according to another embodiment of the present invention;

FIG. 6 is a partial view of a water heater according to another embodiment of the present invention;

FIG. 7 is a further partial view of a water heater according to another embodiment of the present invention;

FIG. 8 is another partial view of a water heater according to another embodiment of the present invention;

reference numerals:

a water heater 100;

a housing 10; a water passing cavity 11; a water passage 111; a flow guide channel 112; a heating element 20; a terminal 21;

a flow guide member 30; an inner shroud plate 31; a middle shroud 32; a peripheral plate 33; a top plate 34; a relief hole 35; a flow guide hole 341;

a water inlet pipe 40; a water outlet pipe 50; water inlet 41 (51).

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

A water heater 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 8, a water heater 100 according to an embodiment of the present invention includes a housing 10, a water inlet pipe 40, a water outlet pipe 50, a heating body 20, and a baffle 30.

A water passing chamber 11 is defined in the case 10, the heating element 20 is disposed in the water passing chamber 11 of the case 10, and the terminal 21 of the heating element 20 passes through the case 10, thereby facilitating the electrical connection of the heating element 20. Meanwhile, the water inlet pipe 40 and the water outlet pipe 50 are respectively connected with the housing 10, and water flow can be supplied into the water passing cavity 11 in the housing 10 through the water inlet pipe 40, and hot water heated by the heating body 20 is discharged through the water outlet pipe 50, thereby facilitating the use of a user.

Further, the flow guiding member 30 is disposed at the bottom of the housing 10, the flow guiding member 30 vertically divides the water passing cavity 11 of the housing 10 into a flow guiding channel and a flow guiding channel 112, wherein the water passing channel 111 is communicated with the water outlet pipe 50, the flow guiding channel 112 is communicated with the water inlet pipe 40, for example, as shown in fig. 1, the flow guiding member 30 and the upper portion of the housing 10 jointly define the water passing channel 111, the flow guiding member 30 and the lower portion of the housing 10 jointly define the flow guiding channel 112, the flow guiding member 30 is provided with a plurality of flow guiding holes 341, the flow guiding channel 112 is communicated with the water passing channel 111 through the flow guiding holes 341, and the flow guiding member 30 is configured to enable the water entering through the water inlet pipe 40 to enter the flow guiding channel 112, to enter the water passing channel 111 through the flow guiding channel 112 after being guided by the flow guiding channel 112, and to finally to enter the water outlet pipe 50 through the water passing channel 111 and to be discharged, in the process, the water entering the flow guiding channel 112 is guided by the flow guiding channel 112, flows according to the preset flow passage direction, and simultaneously, a plurality of small water columns can be formed by the water flow entering the flow guide flow passage 112 by utilizing a plurality of flow guide holes 341, further, the surface heat of the heating element 20 is taken away by a plurality of small water columns flowing from the bottom to the top, so that the uniform control of the water flow flowing out through the diversion flow passage 112 is realized, thereby, the contact uniformity between the water current and the heating element 20 is improved, the thermal convection time is prolonged, and further the large heat transfer efficiency between the water current and the heating element 20 is enhanced, and, because the water flow can take away the heat of the heating element 20 in time, the conditions of wire burning, tube explosion and the like caused by continuous high temperature of the heating element 20 can be reduced, the service life is prolonged, and in addition, compared to the case that the water temperature in the case 10 is suddenly high when the water is shut off in the related art water heater 100, the danger that the user is scalded by high-temperature water when the user uses the water heater due to the closed water temperature rise can be effectively prevented.

Therefore, according to the water heater 100 of the embodiment of the invention, the flow guide member 30 is arranged in the water heater 100, and the flow guide member 30 is provided with the plurality of flow guide holes 341, so that the flow guide member 30 is used for guiding the water flow entering the water passing cavity 11, meanwhile, the flow guide holes 341 are used for uniformly controlling the water flow, the contact uniformity between the water flow and the heating element 20 is improved, the heat convection time is prolonged, the heat transfer efficiency between the water flow and the heating element 20 is enhanced, the heating efficiency of the water heater 100 is improved, and the heat of the heating element 20 can be effectively taken away by the water flow, so that the fault rate of the heating element 20 is reduced, the service life is prolonged, and the use safety is improved.

As shown in fig. 3 and 4, in some embodiments of the present invention, in order to further slow down the flow rate of the water and increase the heat exchange time between the water and the heating body 20, the guide flow passage 112 spirally extends from the outside to the inside in the circumferential direction of the guide member 30, and thus, the water flowing into the guide flow passage 112 through the water inlet pipe 40 spirally flows from the outside to the inside along the flow direction of the guide flow passage 112 (the flow direction is indicated by the arrow in fig. 4), and the water column entering the water passing flow channel 111 through the diversion hole 341 on the diversion member 30 gradually approaches the heating element 20 approximately positioned in the middle of the water passing chamber 11, thereby not only reducing the flow velocity of the water flow and increasing the heat exchange time between the water flow and the heating element 20, thereby effectively taking away the heat on the surface of the heating element 20, but also, the water column formed by the water flow is gradually close to the surface of the heating element 20, so that the heating uniformity of the water flow can be further increased.

As shown in fig. 1, 3 and 4, in some examples, the diversion member 30 is provided with an avoidance hole 35, the avoidance hole 35 may be a middle portion of the diversion member 30, one end of the water outlet pipe 50 is disposed at an outer side of the housing 10, so that a user can connect a pipeline and use hot water, the other end of the water outlet pipe 50 sequentially penetrates through the bottom wall of the housing 10 and the avoidance hole 35 of the diversion member 30 and extends into the water flowing channel 111, so that the water flow in the diversion channel 112 enters the water flowing channel 111 through the diversion hole 341, after the formed small water column exchanges heat with the heating element 20, the heated hot water enters the water outlet pipe 50 through the water inlet 51 of the water outlet pipe 50 and is discharged, the distance between the water inlet 51 of the water outlet pipe 50 and the bottom of the housing 10 can be reasonably set to ensure the contact time between the water flow and the heating element 20 in the housing 10, and the avoidance hole 35 is disposed at the middle portion to facilitate the heating element 20, The arrangement of the water outlet pipe 50, the diversion flow channel 112 and the like further ensures the heating uniformity of the water flow.

As shown in fig. 1 and 5-8, in some embodiments of the present invention, the water inlet pipe 40 may be disposed at the bottom of the housing 10 (as illustrated in fig. 1), thereby facilitating the connection between the water inlet pipe 40 and the baffle 30 and reducing the space occupation; the inlet pipe 40 may also be provided at the top of the housing 10 and communicate with the baffle 30 through a pipe (as shown in the example of fig. 5-8), so that the inlet pipe 40 can be arranged according to design requirements of an aspect user to facilitate connection with an external pipe.

As shown in fig. 3 and 4, in some examples, the flow guiding member 30 mainly includes a top plate 34 and a flow guiding plate, the top plate 34 is provided with a plurality of flow guiding holes 341 penetrating the thickness of the top plate 34, and the plurality of flow guiding holes 341 may be arranged at intervals from outside to inside along the circumferential direction of the top plate 34, the top plate 34 is further provided with an avoiding hole 35, and the avoiding hole 35 is located in the middle of the top plate 34 to facilitate installation of the water outlet pipe 50.

Further, a guide plate is disposed between the top plate 34 and the bottom wall of the casing 10, and the guide plate defines the guide flow channel 112 between the top plate 34 and the bottom wall of the casing 10 as a spiral flow channel (as shown by an arrow in fig. 4) spirally extending from the outside to the inside in the circumferential direction of the top plate 34, so as to ensure uniform guidance of the water flow and improve the contact time between the water flow and the heating element 20.

As shown in fig. 3 and 4, in some examples, the flow guide plate mainly comprises an inner surrounding plate 31, an outer surrounding plate 33 and a middle surrounding plate 32, wherein the inner surrounding plate 31 and the outer surrounding plate 33 are both formed into an annular closed structure, the middle surrounding plate 32 is formed into an annular open structure, the inner surrounding plate 31 is arranged around the edge of a middle avoidance hole 35, the outer surrounding plate 33 is arranged around the outer edge of the top plate 34, and the inner surrounding plate 31 and the outer surrounding plate 33 are both positioned between the top plate 34 and the bottom wall of the shell 10, meanwhile, one end of the middle surrounding plate 32 is connected with the outer surrounding plate 33, the other end extends in the circumferential direction between the inner surrounding plate 31 and the outer surrounding plate 33 and is spaced apart from the inner surrounding plate 31 and the outer surrounding plate 33 so as to facilitate the water flow to flow in the flow guide flow passage 112 formed between the middle surrounding plate 32 and the inner surrounding plate 31 together, thereby, the inner surrounding plate 31, the outer surrounding plate 33 and the middle surrounding plate 32 together define the spiral flow guide flow passage 112, the water flow can be effectively and uniformly guided, the contact time between the water flow and the heating body 20 is ensured, and the heat exchange efficiency is improved.

As shown in fig. 3 and 4, in a further example, the inner surrounding plate 31 is in contact with the bottom wall of the housing 10, and the outer surrounding wall of the outer surrounding plate 33 is in contact with the inner surrounding wall of the housing 10, so that it is further ensured that the water flows along the spiral flow passages formed between the middle surrounding plate 32 and the outer surrounding plate 33, and between the middle surrounding plate 32 and the inner surrounding plate 31, the guiding uniformity of the water flow is improved, and the contact time between the water flow and the heating element 20 is further prolonged.

In some embodiments, in order to ensure the overall structural strength of the baffle 30 and facilitate manufacturing, the top plate 34 and the baffle may be integrally formed, for example, in some examples, the baffle 30 may be a plastic component, thereby facilitating manufacturing and reducing cost, and in other examples, the baffle 30 may be a metal component, thereby ensuring the structural strength of the baffle 30 and improving the heat transfer performance of the baffle 30.

As shown in fig. 3 and 4, in some embodiments, a plurality of flow guiding holes 341 are disposed at the top of the flow guiding member 30 and are spaced apart from each other along the extending direction of the flow guiding channel 112, so that when water flows into the flow guiding channel 112, the water flows into the water flowing channel 111 through the flow guiding holes 341 penetrating the flow guiding channel 112 and arranged along the flowing direction of the flow guiding channel 112 while flowing along the flow guiding channel 112, and a plurality of small water columns gradually approaching the heat generating body 20 are formed, thereby effectively improving the uniformity of water flow control, enhancing the heat transfer between the water flow and the heat generating body 20, and increasing the time of heat convection.

In some examples, the sum of the areas of the diversion holes 341 is much larger than the cross-sectional area of the water inlet 41 of the water inlet pipe 40, for example, S1 is greater than or equal to 3S2 between the sum of the areas S1 of the diversion holes 341 and the cross-sectional area S2 between the water inlet 41 of the water inlet pipe 40, so that the water flow speed can be effectively slowed down, the retention time of the water flow in the housing 10 can be prolonged, and the heat exchange efficiency can be improved by utilizing the pressure difference generated between the water inlet 41 of the water inlet pipe 40 and the diversion holes 341.

In some embodiments, in order to enhance the contact area of the heat generating body 20 with the water flow and improve the heat transfer efficiency, the heat generating body 20 is a heat generating pipe, and the heat generating pipe may spirally extend in the axial direction of the housing 10.

As shown in fig. 1, in some embodiments of the present invention, the water inlet 51 of the water outlet pipe 50 is higher than the connection between the water inlet pipe 40 and the diversion flow channel 112 in the vertical direction (i.e. up and down direction), for example, the water inlet 51 of the water outlet pipe 50 may be disposed adjacent to the top wall of the housing 10 (as shown in fig. 1), thereby ensuring the length of the whole flow channel formed by the diversion flow channel 112 and the water flow channel 111, further prolonging the residence time of the water flow in the housing 10, and improving heat exchange efficiency.

In the description of the present invention, it is to be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

Other constructions, etc. and operation of the water heater 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or 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 invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water heater, comprising:

the water-passing cavity is defined in the shell;

a water inlet pipe connected with the housing to supply water into the housing;

the water outlet pipe is connected with the shell to discharge water in the shell;

the heating element is arranged in the shell, and a wiring end of the heating element penetrates out of the shell;

the flow guide piece is arranged at the bottom of the shell and divides the water passing cavity into a water passing flow channel communicated with the water outlet pipe and a flow guide flow channel communicated with the water inlet pipe in the vertical direction, the flow guide piece is provided with a plurality of flow guide holes communicated with the water passing flow channel, the flow guide piece is constructed to ensure that water flow in the water inlet pipe is discharged from the water outlet pipe after entering the water passing flow channel through the flow guide flow channel and the flow guide holes in sequence, the middle part of the flow guide piece is provided with an avoidance hole, one end of the water outlet pipe is arranged outside the shell, the other end of the water outlet pipe penetrates through the shell and the avoidance hole and extends into the water passing flow channel, and the flow guide holes are arranged at the top of the flow guide piece and are arranged at intervals along the extending direction of the flow guide flow channel;

the baffle includes a baffle, the baffle includes:

the inner surrounding plate is annularly arranged along the edge of the avoidance hole and is arranged between the top plate and the bottom wall of the shell;

the peripheral plate is arranged in a ring shape along the peripheral edge of the top plate and is positioned between the top plate and the bottom wall of the shell, the lower end of the inner enclosing plate is in abutting contact with the bottom wall of the shell, and the peripheral wall of the peripheral plate is in abutting contact with the inner peripheral wall of the shell;

and one end of the middle enclosing plate is connected with the peripheral plate, and the other end of the middle enclosing plate extends between the inner enclosing plate and the peripheral plate along the circumferential direction and is spaced from the inner enclosing plate and the peripheral plate to form the flow guide flow passage.

2. The water heater of claim 1, wherein the diversion flow passage extends spirally from outside to inside along a circumference of the diversion member.

3. The water heater of claim 1, wherein the baffle comprises:

the roof, the roof is equipped with a plurality of edges the water conservancy diversion hole that the roof thickness direction link up just the middle part of roof is equipped with the edge the roof thickness direction link up dodge the hole, the guide plate is located the roof with between the diapire of casing, just the guide plate with the roof the diapire of casing prescribes a limit to jointly the water conservancy diversion runner.

4. The water heater of claim 3, wherein the top plate is integrally formed with the baffle.

5. The water heater according to claim 1, wherein the sum of the areas of the plurality of the baffle holes is larger than the area of the inlet pipe.

6. The water heater according to claim 1, wherein the inlet of the outlet tube is disposed adjacent the top wall of the housing and vertically above the communication of the inlet tube with the diversion flow passage.