CN219433850U

CN219433850U - Electric water heating system

Info

Publication number: CN219433850U
Application number: CN202320716840.2U
Authority: CN
Inventors: 王丽利; 马苗; 辛森森; 熊晓俊; 苟光明; 谢亚光; 史晓煜
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-07-28
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses an electric water heating system, which comprises an electric water heater and a bath wastewater heat exchange device; the bathing waste water heat exchange device is provided with a water inlet end and a water outlet end, wherein the water inlet end is used for being connected with a tap water pipe, the water outlet end is used for being connected with a water inlet pipe of the electric water heater, and low-temperature water entering from the water inlet end is used for heat exchange with bathing waste water and flows from the water outlet end to the water inlet pipe of the electric water heater. The technical scheme of the utility model provides an electric water heating system which utilizes the residual temperature of bath wastewater to effectively improve the water inlet temperature of an electric water heater.

Description

Electric water heating system

Technical Field

The utility model relates to the technical field of energy-saving devices, in particular to an electric water heating system.

Background

Electric water heaters are currently becoming more and more popular for use in everyday life. It does not need fuel gas, bringing great convenience to the life of people.

When a user bathes under the condition of low-temperature water inflow in winter, the problem that the waiting time of the electric water heater is long and the hot water is insufficient is frequently encountered due to the lower water inflow temperature of the electric water heater. The waste water after bathing is generally directly discharged into a sewer, but the waste water has certain residual temperature, and the waste water is directly discharged to cause resource waste.

Disclosure of Invention

The utility model mainly aims to provide an electric water heating system, and aims to provide an electric water heating system which utilizes the residual temperature of bath wastewater to effectively improve the water inlet temperature of an electric water heater.

In order to achieve the above object, the present utility model provides an electric water heating system, comprising:

electric water heater;

the bath waste water heat exchange device is provided with a water inlet end and a water outlet end, the water inlet end is used for being connected with a tap water pipe, the water outlet end is used for being connected with a water inlet pipe of an electric water heater, and low-temperature water entering from the water inlet end is used for heat exchange with bath waste water and flows from the water outlet end to the water inlet pipe of the electric water heater.

In one embodiment of the utility model, the bath waste water heat exchange device comprises:

the device comprises a tray body, wherein a wastewater collection cavity is formed in the tray body, and a wastewater collection hole and a drainage hole which are communicated with the wastewater collection cavity are formed in the tray body;

the heat exchange coil is arranged in the waste water collecting cavity and comprises a first heat exchange tube and a second heat exchange tube which are connected in series, the first heat exchange tube is provided with a water inlet end, the second heat exchange tube is provided with a water outlet end, and the first heat exchange tube and the second heat exchange tube are spirally extended along the direction from the center of the disc body to the edge.

In an embodiment of the present utility model, the water inlet end and the water outlet end are both disposed near the edge of the tray body;

or the water inlet end and the water outlet end are both close to the center of the tray body.

In an embodiment of the utility model, the bath wastewater heat exchange device further comprises a partition plate, the partition plate is arranged in the wastewater collection cavity, a first spiral flow passage and a second spiral flow passage are formed by enclosing the partition plate with the inner wall of the tray body, the first spiral flow passage and the second spiral flow passage are communicated with the wastewater collection hole and the drain hole, the first heat exchange tube is spirally arranged along the extending direction of the first spiral flow passage, and the second heat exchange tube is spirally arranged along the extending direction of the second spiral flow passage.

In an embodiment of the utility model, the partition plate comprises a first partition plate and a second partition plate which are arranged at intervals, and the first partition plate and the second partition plate are arranged in the waste water collecting cavity and spirally extend along the direction from the center of the tray body to the edge, so that the first spiral flow channel and the second spiral flow channel are formed by surrounding the first partition plate, the second partition plate and the inner wall of the tray body.

In an embodiment of the present utility model, a material reducing groove is concavely disposed on a lower surface of the tray body, and the material reducing groove is disposed corresponding to the first partition board and/or the second partition board.

In an embodiment of the present utility model, the first separator and the second separator are located at the same height, so that the first heat exchange tube and the second heat exchange tube are arranged in a double spiral extending manner at the same height.

In an embodiment of the utility model, the waste water collecting hole is formed on the upper surface of the tray body.

In an embodiment of the utility model, the waste water collecting hole is arranged corresponding to the center of the tray body;

and/or the waste water collecting hole cover is provided with a filter screen;

and/or the upper surface of the tray body is provided with a groove, and the waste water collecting hole is formed in the bottom wall of the groove.

In an embodiment of the present utility model, the drain hole is formed on the lower surface of the tray body and/or the side wall surface of the tray body.

In an embodiment of the present utility model, when the drain hole is formed in the lower surface of the tray body, an annular rib is convexly formed on the outer periphery of the lower surface of the tray body, a drain groove is formed by encircling the annular rib and the lower surface of the tray body, an opening penetrating to the inner side wall is formed in the outer side wall of the annular rib, and the drain hole is communicated with the opening through the drain groove.

In an embodiment of the present utility model, the tray body includes a lower tray and an upper tray, the lower tray is provided with the drain hole, the upper tray is covered on the lower tray and forms the waste water collection cavity with the lower tray, and the lower tray or the lower tray is provided with the waste water collection hole;

and/or the tray body is also provided with a first mounting hole and a second mounting hole, the water inlet end of the first heat exchange tube is penetrated through the first mounting hole, and the water outlet end of the second heat exchange tube is penetrated through the second mounting hole;

and/or, the heat exchange coil further comprises a connecting pipe, and the first heat exchange pipe is connected with the second heat exchange pipe in series through the connecting pipe.

In the electric water heating system provided by the utility model, when a user uses the electric water heater to perform bath, the waste water after bath can be contacted with the bath waste water heat exchange device, meanwhile, water in the tap water pipe can enter the bath waste water heat exchange device from the water inlet end, in the process, low-temperature water entering from the water inlet end can perform heat exchange with the bath waste water, the temperature of the waste water after heat exchange is reduced, and finally the waste water is discharged to a sewer, the temperature of the water after heat exchange in the bath waste water heat exchange device is increased, and the water after temperature increase can enter the electric water heater from the water outlet end, so that the water inlet temperature of the electric water heater can be effectively increased by utilizing the residual temperature of the bath waste water, and the problems of long waiting time and insufficient hot water of the electric water heater can be solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a heat exchange device for bath wastewater in an electric water heating system according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a bath waste water heat exchange device in an embodiment of the electric water heating system according to the present utility model;

FIG. 3 is a front view of an embodiment of a bath waste water heat exchange device in an electric water heating system according to the present utility model;

FIG. 4 is a cross-sectional view at A '-A' in FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a partial enlarged view at B in FIG. 4;

FIG. 7 is an exploded view of one embodiment of a bath waste water heat exchange device in an electric water heating system according to the present utility model;

FIG. 8 is a schematic view of another embodiment of a bath waste water heat exchange device in an electric water heating system according to the present utility model;

FIG. 9 is a schematic view of another embodiment of a bath waste water heat exchange device in an electric water heating system according to the present utility model;

FIG. 10 is a front view of another embodiment of a bath waste water heat exchange apparatus in an electric water heating system in accordance with the present utility model;

FIG. 11 is a cross-sectional view at A '-A' of FIG. 10;

FIG. 12 is an enlarged view of a portion of FIG. 11 at A;

FIG. 13 is a partial enlarged view at B in FIG. 11;

FIG. 14 is an exploded view of another embodiment of a bath waste water heat exchange device in an electric hot water system according to the present utility model;

FIG. 15 is a schematic view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 16 is an enlarged view of a portion of FIG. 15 at M;

FIG. 17 is a schematic view of an exploded view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 18 is a schematic view of a bottom wall, a first support member and a second support member according to another embodiment of the present utility model;

FIG. 19 is a schematic view of a heat storage structure according to another embodiment of the present utility model;

FIG. 20 is a schematic view of an assembled structure of a bottom wall and a heat exchange coil according to another embodiment of the present utility model;

FIG. 21 is a schematic view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 22 is an enlarged view of a portion of the portion M of FIG. 21;

FIG. 23 is a schematic view of an exploded view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 24 is a schematic view showing an assembled structure of a bottom wall and a sealing member according to still another embodiment of the present utility model;

FIG. 25 is a schematic view of another view of a thermal bath waste water displacement apparatus according to an embodiment of the present utility model;

FIG. 26 is a cross-sectional view of yet another embodiment of a bath waste heat exchange apparatus in accordance with the present utility model;

FIG. 27 is an enlarged view of a portion of FIG. 26 at N;

FIG. 28 is a schematic view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 29 is an enlarged view of a portion of FIG. 28 at M;

FIG. 30 is a schematic view of an exploded view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 31 is a schematic view of a heat exchange flow path in a further embodiment of a bath waste water heat exchange device in an electric water heating system according to the present utility model;

FIG. 32 is a schematic view of a thermal displacement device for bath waste water in an electric water heating system according to another embodiment of the present utility model;

FIG. 33 is a cross-sectional view of yet another embodiment of a bath waste water thermal displacement apparatus in an electric hot water system in accordance with the present utility model;

FIG. 34 is an enlarged view of a portion of N in FIG. 33;

fig. 35 is a schematic structural view of an embodiment of the electric water heating system according to the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an electric water heating system 1000, and aims to provide the electric water heating system 1000 which utilizes the residual temperature of bath wastewater to effectively raise the water inlet temperature of an electric water heater 200.

The specific structure of the electric water heating system 1000 of the present utility model will be described below:

referring to fig. 8 in combination, in an embodiment of the electric water heating system 1000 of the present utility model, the electric water heating system 1000 includes an electric water heater 200 and a bath wastewater heat exchange device 100, the bath wastewater heat exchange device 100 has a water inlet end and a water outlet end, the water inlet end is connected with a tap water pipe 400, the water outlet end is connected with a water inlet pipe of the electric water heater 200, and low-temperature water entering from the water inlet end is used for heat exchange with bath wastewater and flows from the water outlet end to the water inlet pipe of the electric water heater 200.

It can be appreciated that in the electric water heating system 1000 provided by the utility model, when a user uses the electric water heater 200 to perform a bath, the waste water after the bath can be in contact with the bath waste water heat exchange device 100, meanwhile, water in the tap water pipe 400 can enter the bath waste water heat exchange device 100 from the water inlet end 211, in the process, low-temperature water entering from the water inlet end 211 can perform heat exchange with the bath waste water, the temperature of the waste water after heat exchange is reduced, and finally discharged into a sewer, and the temperature of the water after heat exchange in the bath waste water heat exchange device 100 is increased, so that the water after temperature increase can enter the electric water heater 200 from the water outlet end 221, and the water inlet temperature of the electric water heater 200 can be effectively increased by utilizing the residual temperature of the bath waste water, thereby solving the problems of long waiting time and insufficient hot water of the electric water heater 200.

In this embodiment, the electric water heater 200 may have a water outlet terminal such as a shower head 210 and a faucet, and the hot water flowing out from the water outlet pipe of the electric water heater 200 may flow out through the water outlet terminal such as the shower head 210 and the faucet, so as to provide the bath hot water for the user.

Further, referring to fig. 1 to 7 in combination, in one embodiment, the bath waste water heat exchange apparatus 100 includes a tray 10 and a heat exchange coil 20; a waste water collecting cavity is formed in the tray body 10, and the tray body 10 is provided with a waste water collecting hole 121 and a drain hole 113 which are communicated with the waste water collecting cavity; the heat exchange coil 20 is disposed in the waste water collecting cavity and includes a first heat exchange tube 21 and a second heat exchange tube 22 connected in series, the first heat exchange tube 21 has a water inlet end 211, the second heat exchange tube 22 has a water outlet end 221, the water inlet end 211 is connected with a tap water pipe 400, the water outlet end 221 is connected with a water inlet pipe 300 of the electric water heater 200, and the first heat exchange tube 21 and the second heat exchange tube 22 are all spirally extended along the direction from the center of the tray body 10 to the edge.

So set up, when using electric water heater 200 to bathe, the waste water after bathing can collect in the waste water collection chamber through waste water collecting hole 121, simultaneously, water in water pipe 400 can flow through heat exchange coil 20's first heat exchange tube 21 and second heat exchange tube 22 in proper order, in this process, the low temperature water in heat exchange coil 20 will carry out the heat exchange with the high temperature waste water in the waste water collection chamber, waste water temperature after the heat transfer reduces, finally drain sewer from water discharge hole 113, and the temperature after the heat transfer in heat exchange coil 20 is promoted, the water after the temperature promotes will get into electric water heater 200, thereby can utilize the residual temperature of bathing waste water to effectively promote electric water heater 200's inflow temperature, in order to solve electric water heater 200 latency long, the insufficient problem of hot water.

In addition, by arranging the first heat exchange tube 21 and the second heat exchange tube 22 in a spiral structure and arranging the first heat exchange tube 21 and the second heat exchange tube 22 in a spiral extending manner along the direction from the center of the tray body 10 to the edge, the contact time between the heat exchange coil 20 and the bath wastewater can be effectively increased, and the water in the heat exchange coil 20 and the bath wastewater can be fully subjected to heat exchange, so that the heat exchange efficiency can be increased.

The waste water collection chamber of the bath waste water heat exchange device 100 may be used to collect high temperature waste water after a user washes his hands, washes dishes, etc., and may be used in a bathroom or a kitchen.

In one embodiment, when the waste water collection chamber of the bath waste water heat exchange apparatus 100 is used to collect high temperature waste water after a user has been bathed, the bath waste water heat exchange apparatus 100 may be installed on the ground where the user is about to stand, before use, the tap water pipe 400 is connected to the water inlet end 211 of the first heat exchange pipe 21, and the water outlet end 221 of the second heat exchange pipe 22 is connected to the water inlet pipe 300 of the electric water heater 200; as such, when a user bathes using the electric water heater 200, the waste water will flow down the waste water collecting hole 121 to be collected into the waste water collecting chamber through the waste water collecting hole 121.

In the practical application process, the cross section of the tray body 10 may be circular, elliptical, rectangular, etc., the heat exchange coil 20 may be a round tube, a corrugated tube, a fin type round tube, a fin type corrugated tube, etc., and the heat exchange coil 20 may be a copper tube, a stainless steel tube, etc., which may be specific according to the practical use situation, and is not limited herein.

In the practical application process, the first heat exchange tube 21 and the second heat exchange tube 22 may be arranged in the height direction of the tray body 10, specifically, the first heat exchange tube 21 and the second heat exchange tube 22 may be stacked in the height direction of the tray body 10, or may be arranged at intervals in the height direction of the tray body 10; alternatively, the first heat exchange tube 21 and the second heat exchange tube 22 may be disposed at intervals in the width or length direction of the tray 10, and specifically, the first heat exchange tube 21 and the second heat exchange tube 22 may be disposed in close contact with each other in the width or length direction of the tray 10, or may be disposed at intervals in the width or length direction of the tray 10. Of course, in order to increase the contact area of the first heat exchange tube 21 and the second heat exchange tube 22 with the high-temperature wastewater, the first heat exchange tube 21 and the second heat exchange tube 22 may be disposed at a distance.

In an embodiment, when the cross-sectional shape of the tray body 10 is circular, the first heat exchange tube 21 and the second heat exchange tube 22 may be disposed at intervals in the radial direction of the tray body 10, so that the first heat exchange tube 21 and the second heat exchange tube 22 with longer lengths may be disposed in a limited space, so as to effectively improve the heat exchange efficiency between the first heat exchange tube 21 and the second heat exchange tube 22 and the high-temperature wastewater.

In the practical application process, the waste water collecting hole 121 may be formed on the upper surface of the tray body 10, or may be formed on the side surface of the tray body 10; the drain hole 113 may be formed in a side surface of the tray 10 or may be formed in a lower surface of the tray 10.

In the practical application process, the water inlet end 211 of the first heat exchange tube 21 and/or the water outlet end 221 of the second heat exchange tube 22 may be disposed near the center of the tray body 10, or may be disposed near the edge of the tray body 10.

Further, referring to fig. 7 in combination, in an embodiment, in order to make the arrangement of the first heat exchange tube 21 and the second heat exchange tube 22 more regular, so as to reduce the occupied space of the first heat exchange tube 21 and the second heat exchange tube 22, the water inlet end 211 of the first heat exchange tube 21 and the water outlet end 221 of the second heat exchange tube 22 may be disposed near the edge of the tray 10, or the water inlet end 211 of the first heat exchange tube 21 and the water outlet end 221 of the second heat exchange tube 22 may be disposed near the center of the tray 10.

Further, in an embodiment, in order to facilitate connection between the water inlet end 211 of the first heat exchange tube 21 and the tap water tube 400 and connection between the water outlet end 221 of the second heat exchange tube 22 and the water inlet tube of the electric water heater 200, the water inlet end 211 of the first heat exchange tube 21 and the water outlet end 221 of the second heat exchange tube 22 may be disposed near the edge of the tray 10.

Further, referring to fig. 4 and 7 in combination, in an embodiment, the bath waste water heat exchange device 100 further includes a partition plate 30, the partition plate 30 is disposed in the waste water collecting cavity and forms a first spiral flow channel 10a and a second spiral flow channel 10b with the inner wall of the tray body 10, the first spiral flow channel 10a and the second spiral flow channel 10b are both communicated with the waste water collecting hole 121 and the drain hole 113, the first heat exchange tube 21 is spirally disposed along the extending direction of the first spiral flow channel 10a, and the second heat exchange tube 22 is spirally disposed along the extending direction of the second spiral flow channel 10 b.

By arranging the partition plate 30 in the waste water collecting cavity, the partition plate 30 and the inner wall of the tray body 10 are surrounded to form the first spiral flow channel 10a and the second spiral flow channel 10b, the spiral first heat exchange tube 21 and the spiral second heat exchange tube 22 can be respectively arranged in the first spiral flow channel 10a and the second spiral flow channel 10b in the assembling process, so that high-temperature waste water flowing in from the waste water collecting hole 121 can flow into the first spiral flow channel 10a and the second spiral flow channel 10b to perform heat exchange with water in the first heat exchange tube 21 and the second heat exchange tube 22 respectively through the high-temperature waste water in the first spiral flow channel 10a and the second spiral flow channel 10b, the temperature of the water in the first heat exchange tube 21 and the second heat exchange tube 22 can be sufficiently improved, and meanwhile, the first heat exchange tube 21 and the second heat exchange tube 22 can be respectively limited and fixed through the first spiral flow channel 10a and the second spiral flow channel 10b, so that the positions of the first heat exchange tube 21 and/or the second heat exchange tube 22 can be prevented from moving in the process of carrying or using, and even the service life is influenced.

In the practical application process, the first spiral flow channel 10a and the second spiral flow channel 10b may be mutually communicated or may be mutually isolated.

Further, referring to fig. 4 and 7 in combination, in an embodiment, the partition board 30 includes a first partition board 31 and a second partition board 32 that are disposed at intervals, and the first partition board 31 and the second partition board 32 are disposed in the waste water collecting cavity and are disposed in a spiral extending manner along a direction from a center to an edge of the tray body 10, so that the first partition board 31, the second partition board 32, and an inner wall of the tray body 10 enclose the first spiral flow channel 10a and the second spiral flow channel 10b.

By arranging the first partition plate 31 and the second partition plate 32 at intervals in the waste water collecting chamber and spirally extending the first partition plate 31 and the second partition plate 32 along the direction from the center of the tray body 10 to the edge, the first partition plate 31, the second partition plate 32 and the inner wall of the tray body 10 can enclose the first spiral flow passage 10a and the second spiral flow passage 10b at intervals.

In the practical application process, the first separator 31 and/or the second separator 32 may be integrally formed with the tray 10, or may be detachably connected with the tray 10. Specifically, when the first separator 31 and/or the second separator 32 are detachably connected to the tray 10, the first separator 31 and/or the second separator 32 may be connected to the tray 10 by means of adhesion, plugging, screw connection, or the like.

Further, referring to fig. 2 and 4 in combination, in an embodiment, a material reducing groove 118 is concavely formed on the lower surface of the tray body 10, and the material reducing groove 118 is disposed corresponding to the first partition 31 and/or the second partition 32.

In the preparation process, the material cost can be reduced on one hand, and on the other hand, the wall thickness of the tray body 10 at each position can be ensured to be consistent as much as possible by concavely arranging the material reducing groove 118 at the position of the lower surface of the tray body 10 corresponding to the first baffle plate 31 and/or the second baffle plate 32, so that the cooling time is long at the position with larger wall thickness, and the phenomenon of shrinkage deformation caused by inconsistent wall thickness in the cooling process can be prevented.

Further, referring to fig. 2 and 4 in combination, in an embodiment, the first separator 31 and the second separator 32 are located at the same height, so that the first heat exchange tube 21 and the second heat exchange tube 22 are arranged in a double spiral extending manner at the same height. By such arrangement, the first spiral flow channel 10a and the second spiral flow channel 10b can be arranged at intervals on the same height of the tray body 10, so that the first heat exchange tube 21 and the second heat exchange tube 22 can be arranged at intervals on the same height of the tray body 10, and the overall thickness of the tray body 10 can be reduced.

Illustratively, one end of the first spiral flow channel 10a near the center of the tray body 10 is communicated with one end of the second spiral flow channel 10b near the center of the tray body 10, so that the first heat exchange tube 21 and the second heat exchange tube 22 can be connected in series through the communication place, and other positions of the first spiral flow channel 10a and the second spiral flow channel 10b are isolated from each other, since the first spiral flow channel 10a is used for placing the first heat exchange tube 21 and the second spiral flow channel 10b is used for placing the second heat exchange tube 22, high-temperature wastewater can flow into the first spiral flow channel 10a and the second spiral flow channel 10b, low-temperature water flowing from the tap water tube 400 flows through the first heat exchange tube 21 and the second heat exchange tube 22 in sequence, after the low-temperature water in the first heat exchange tube 21 exchanges heat with the high-temperature wastewater in the first spiral flow channel 10a, the temperature of the wastewater after heat exchange in the first spiral flow channel 10a is already reduced, if the first spiral flow path 10a and the second spiral flow path 10b are communicated with each other, the waste water having a reduced temperature in the first spiral flow path 10a is mixed with the high temperature waste water in the second spiral flow path 10b, resulting in a reduction in the temperature of the waste water in the second spiral flow path 10b, thereby affecting the effect of heat exchange between the waste water in the second spiral flow path 10b and the low temperature water in the second heat exchange tube 22, therefore, by providing the first spiral flow path 10a and the second spiral flow path 10b separately from each other, the heat exchange effect of the water in the first heat exchange tube 21 and the water in the first spiral flow path 10a and the heat exchange effect of the water in the second heat exchange tube 22 and the water in the second spiral flow path 10b can be effectively ensured, so that the water temperature of the flow path from the water outlet end 221 of the second heat exchange tube 22 is eventually increased, and the water after the temperature elevation enters the electric water heater 200, so that the residual temperature of the bath wastewater can be utilized to effectively raise the water inlet temperature of the electric water heater 200.

Further, referring to fig. 1, 3, 5 and 7, in one embodiment, the waste water collecting hole 121 is formed on the upper surface of the tray 10.

So set up, through seting up waste water collecting hole 121 at the upper surface of disk body 10, the user can directly flow into waste water collecting chamber through waste water collecting hole 121 after the bathing to reduce the time that high temperature waste water stayed in the air, thereby can make bathing waste water can flow into waste water collecting chamber with higher temperature, so that the waste water of higher temperature carries out the high-efficient heat transfer with the water in the heat exchange coil 20, and then promotes the temperature to the water in the heat exchange coil 20.

Illustratively, the waste water collecting holes 121 may be provided in plurality, and the plurality of waste water collecting holes 121 are arranged at intervals on the upper surface of the tray body 10.

Further, referring to fig. 1, 3, 5, and 7 in combination, in one embodiment, the waste water collecting hole 121 is disposed corresponding to the center of the tray 10; since the position where the first heat exchange tube 21 and the second heat exchange tube 22 are connected in series is generally disposed near the center of the tray body 10, by disposing the waste water collection hole 121 corresponding to the center of the tray body 10, the high temperature waste water entering from the waste water collection hole 121 can flow from the center of the tray body 10 to the edge direction so as to be in full contact with the heat exchange coil 20 and further to be in full heat exchange with the low temperature water in the heat exchange coil 20; in addition, since the user generally stands at the central position of the tray body 10 when taking a shower, the high-temperature waste water after the shower flows to the central position of the top of the tray body 10, so that the residence time of the high-temperature waste water in the air can be reduced by arranging the waste water collecting hole 121 corresponding to the center of the tray body 10, the bathing waste water can flow into the waste water collecting cavity at a higher temperature, the waste water at the higher temperature exchanges heat with the water in the heat exchange coil 20 efficiently, and the temperature of the water in the heat exchange coil 20 is further improved.

Further, referring to fig. 1, 3, 5, and 7 in combination, in one embodiment, the waste water collecting hole 121 is covered with a filter screen (not shown); so set up, through being equipped with the filter screen in waste water collecting hole 121 department lid, impurity such as can effectively separation hair blocks up waste water collecting hole 121, and then impurity such as effective separation hair gets into the waste water collection intracavity, consequently when clean, can directly take off the filter screen clean can.

Illustratively, the filter mesh may be provided as a mesh sheet cushion to facilitate the user's handling of the filter mesh; in addition, the grid sheet cushion can be automatically adsorbed on the upper surface of the tray body 10 to cover the waste water collecting holes 121, so that a user can be prevented from falling down due to careless kicking of the filter screen in the shower process, and the filter screen can be prevented from being kicked askew to influence the filtering effect; and the grid flaky cushion can also play a role of skid resistance so as to reduce the risk of skid of a user in the shower process.

Illustratively, the mesh sheet cushion may be made of silica gel, rubber, or the like.

Further, referring to fig. 1, 3, and 5 to 7, in one embodiment, the upper surface of the tray 10 is provided with a groove 122, and the wastewater collection hole 121 is formed in a bottom wall of the groove 122.

So set up, the high temperature waste water after the user bathes alright flow to the recess 122 of disk body 10 upper surface in to make most waste water can store in recess 122 earlier, rethread waste water collecting hole 121 flows into the waste water collection chamber, thereby can guarantee that most waste water flows into the waste water collection chamber through waste water collecting hole 121, in order to reduce the high temperature waste water of direct drainage sewer.

Illustratively, in order that the waste water stored in the groove 122 can quickly flow into the waste water collecting chamber through the waste water collecting hole 121, the groove bottom wall of the groove 122 may be provided as an inclined wall surface such that the groove bottom wall of the groove 122 is gradually inclined along a side away from the waste water collecting hole 121 toward a side close to the waste water collecting hole 121. In an embodiment, when the waste water collecting hole 121 is provided corresponding to the center of the tray body 10, the groove bottom wall of the groove 122 may be gradually inclined in the direction of the edge of the tray body 10 toward the center.

Further, referring to fig. 1, 2 and 7 in combination, in an embodiment, the drain hole 113 is formed on the lower surface of the tray 10 and/or the side wall surface of the tray 10. By this arrangement, the waste water after heat exchange can be timely discharged to the sewer from the drain hole 113 at the lower surface and/or the side wall surface of the tray body 10.

In an embodiment, the drain holes 113 may be formed on the lower surface of the tray body 10 and the side wall surface of the tray body 10, when the flow rate of the bath waste water is faster, and the waste water in the waste water collecting cavity is not enough to flow out from the drain holes 113 on the lower surface of the tray body 10, the waste water in the waste water collecting cavity may be discharged from the drain holes 113 on the side wall surface of the tray body 10, so as to ensure that the waste water in the waste water collecting cavity can be updated in time, thereby ensuring the temperature of the waste water in the waste water collecting cavity, and further ensuring the heat exchange efficiency of the waste water and the water in the heat exchange coil 20.

Illustratively, to ensure that sufficient waste water is stored in the waste water collection chamber, the drain holes 113 on the lower surface of the tray 10 may be made smaller in diameter than the drain holes 113 on the side wall surface of the tray 10 to prevent waste water in the waste water collection chamber from having been drained from the drain holes 113 on the lower surface of the tray 10 without heat exchange with water in the heat exchange coil 20.

Further, referring to fig. 2 in combination, in an embodiment, when the drain hole 113 is formed in the lower surface of the tray body 10, an annular rib 114 is protruding from the outer periphery of the lower surface of the tray body 10, a drain groove 115 is formed by surrounding the annular rib 114 and the lower surface of the tray body 10, an opening 116 penetrating through to the inner side wall is formed in the outer side wall of the annular rib 114, and the drain hole 113 is communicated with the opening 116 through the drain groove 115.

So arranged, when the bath waste water heat exchange device 100 is installed on the ground, the annular ribs 114 on the lower surface of the tray body 10 can be contacted with the ground, so that the lower surface of the tray body 10 is prevented from being directly contacted with the ground to block the drain holes 113 on the lower surface of the tray body 10, and the waste water discharged from the drain holes 113 on the lower surface of the tray body 10 can flow into the drain grooves 115 and then be discharged to a sewer through the openings.

For example, in order to enhance drainage efficiency, a plurality of openings 116 may be provided at intervals along the circumferential direction of the annular bead 114.

Further, referring to fig. 1 and fig. 4 to fig. 7 in combination, in an embodiment, the tray body 10 includes a lower tray 11 and an upper tray 12, the lower tray 11 is provided with the drain hole 113, the upper tray 12 is covered on the lower tray 11 and encloses with the lower tray 11 to form the waste water collecting cavity, and the lower tray 11 or the lower tray 11 is provided with the waste water collecting hole 121.

So set up, in the assembly process, can place heat exchange coil 20 in the runner that lower disc 11 corresponds earlier, then establish upper disc 12 lid on lower disc 11, can make heat exchange coil 20 install in the waste water collection chamber that upper disc 12 and lower disc 11 enclose and close the formation to the installation of heat exchange coil 20 is convenient.

In the practical application process, the lower surface of the upper disc 12 is of a planar structure, the upper surface of the lower disc 11 is concavely provided with a runner with a corresponding shape, and when the upper disc 12 is covered on the lower disc 11, the upper disc can be enclosed with the lower disc 11 to form a wastewater collection cavity; or, the lower surface of the upper disc 12 is concavely provided with a runner with a corresponding shape, the upper surface of the lower disc 11 is of a plane structure, and when the upper disc 12 is covered on the lower disc 11, the upper disc can be enclosed with the lower disc 11 to form a waste water collecting cavity; alternatively, the lower surface of the upper plate 12 is concavely provided with a runner with a corresponding shape, and the upper surface of the lower plate 11 is concavely provided with a runner with a corresponding shape, so that when the upper plate 12 is covered on the lower plate 11, the upper plate can be enclosed with the lower plate 11 to form a waste water collecting cavity.

For example, referring to fig. 6 in combination, in order to ensure the tightness of the connection between the upper plate 12 and the lower plate 11, an annular limiting rib 117 may be disposed on the outer periphery of the upper surface of the lower plate 11, and an annular limiting groove 123 may be disposed on the outer periphery of the lower surface of the upper plate 12, and when the upper plate 12 is covered on the lower plate 11, the annular limiting rib 117 may be inserted into the annular limiting groove 123 to realize the sealing connection between the upper plate 12 and the lower plate 11.

For example, the upper disc 12 and the lower disc 11 may be fixedly connected by bonding, screw connection, clamping connection, or the like.

Further, referring to fig. 1 and fig. 4 to fig. 7 in combination, in an embodiment, the tray body 10 is further provided with a first mounting hole 111 and a second mounting hole 112, the water inlet end 211 of the first heat exchange tube 21 is disposed through the first mounting hole 111, and the water outlet end 221 of the second heat exchange tube 22 is disposed through the second mounting hole 112.

So configured, the water inlet end 211 of the first heat exchange tube 21 passes through the first mounting hole 111 of the tray body 10 to be smoothly connected with the tap water tube 400, and the water outlet end 221 of the second heat exchange tube 22 passes through the second mounting hole 112 of the tray body 10 to be smoothly connected with the water inlet pipe of the electric water heater 200.

Further, referring to fig. 7 in combination, in an embodiment, the heat exchange coil 20 further includes a connection pipe 23, and the first heat exchange tube 21 is connected in series to the second heat exchange tube 22 through the connection pipe 23. By this arrangement, the first heat exchange tube 21 and the second heat exchange tube 22 can be connected in series with the connection tube 23.

For example, the first heat exchange tube 21, the connection tube 23 and the second heat exchange tube 22 may be integrally formed, and during the preparation, a complete tube body may be directly formed, and during the assembly process, the complete tube body may be bent to form the first heat exchange tube 21, the connection tube 23 and the second heat exchange tube 22.

Further, in an embodiment, in order to make the water in the first heat exchange tube 21 smoothly flow to the second heat exchange tube 22 through the connection tube 23, the connection tube 23 may be designed as an arc-shaped bent tube.

Further, referring to fig. 8 to 14 in combination, in another embodiment, the bath waste water heat exchange apparatus 100 may further include a tray 10 and a heat exchange coil 20; a waste water collecting cavity is formed in the tray body 10, and the tray body 10 is provided with a waste water collecting hole 121 and a drain hole 113 which are communicated with the waste water collecting cavity; the heat exchange coil 20 is disposed in the waste water collecting cavity and has a water inlet end 211 and a water outlet end 2221, the water inlet end 211 is used for being connected with the cold water supply water inlet pipe 400, the water outlet end 2221 is used for being connected with the water inlet pipe 300 of the electric water heater 200, and the heat exchange coil 20 is at least partially spirally extended along the direction from the center of the tray body 10 to the edge.

So set up, when using electric water heater 200 to bathe, the waste water after the bathing can collect in the waste water collecting chamber through waste water collecting hole 121, simultaneously, the water in the cold water supply inlet tube 400 can flow through heat exchange coil 20, in this process, the low temperature water in heat exchange coil 20 will carry out the heat exchange with the high temperature waste water in the waste water collecting chamber, waste water temperature after the heat exchange reduces, finally drain sewer from water outlet 113, and the temperature of water after the heat exchange in heat exchange coil 20 is promoted, the water after the temperature promotion will get into electric water heater 200, thereby can utilize the residual temperature of bathing waste water to effectively promote electric water heater 200's inflow temperature, in order to solve electric water heater 200 latency long, hot water insufficient problem.

Further, referring to fig. 11 and 14 in combination, in an embodiment, the heat exchange coil 20 includes a first heat exchange tube 21 and a second heat exchange tube 22 connected in series, the first heat exchange tube 21 has the water inlet end 211, the second heat exchange tube 22 has the water outlet end 2221, the first heat exchange tube 21 is spirally extended along the direction from the center of the tray body 10 to the edge, and the second heat exchange tube 22 is extended along the direction from the center of the tray body 10 to the edge.

So set up, the water in the cold water supply inlet tube 400 can flow through the first heat exchange tube 21 and the second heat exchange tube 22 of heat exchange coil 20 in proper order, and in this process, the low temperature water in the first heat exchange tube 21 and the second heat exchange tube 22 will carry out the heat exchange with the high temperature waste water in the waste water collection chamber to effectively increase the length of arranging of heat exchange coil 20 in the waste water collection chamber, thereby can effectively promote heat exchange efficiency.

Further, referring to fig. 11 and 14 in combination, in an embodiment, the bath waste water heat exchange device 100 further includes a partition plate 30, wherein the partition plate 30 is disposed in the waste water collecting chamber and extends along the center of the tray 10 toward the edge to form a ring with the inner wall of the tray 10

The spiral flow passage 10c, the spiral flow passage 10c communicates the waste water collecting hole 121 with the drain hole 113, the heat exchange coil 20 is disposed in the spiral flow passage 10c, and the first heat exchange tube 21 is spirally disposed along the extending direction of the spiral flow passage 10 c.

By arranging the partition plate 30 in the waste water collecting cavity, the partition plate 30 and the inner wall of the tray body 10 are surrounded to form the spiral flow channel 10c, in the assembling process, the heat exchange coil 20 can be installed in the spiral flow channel 10c, and the spiral first heat exchange tube 21 is spirally arranged along the extending direction of the spiral flow channel 10c, so that high-temperature waste water flowing in from the waste water collecting hole 121 can flow into the spiral flow channel 10c to exchange heat with water in the first heat exchange tube 21 and the second heat exchange tube 22 through the high-temperature waste water in the spiral flow channel 10c, so that the temperature of the water in the first heat exchange tube 21 and the second heat exchange tube 22 can be fully improved, and meanwhile, the first heat exchange tube 21 can be limited and fixed through the spiral flow channel 10c, so that the position of the first heat exchange tube 21 is prevented from moving in the carrying or using process, and the heat exchange effect is influenced and the service life is even influenced.

In the practical application process, the partition board 30 may be formed integrally with the tray body 10, or may be detachably connected with the tray body 10. Specifically, when the partition board 30 and the tray body 10 are in a detachable connection structure, the partition board 30 may be connected to the tray body 10 by means of adhesion, plugging, screw connection, or the like.

Further, referring to fig. 14 in combination, in an embodiment, a clamping groove 30a is formed on one side of the partition board 30, and the second heat exchange tube 22 is clamped in the clamping groove 30a.

So set up, in the assembly process, with first heat exchange tube 21 spiral installation behind spiral runner 10c, can establish second heat exchange tube 22 card in draw-in groove 30a of baffle 30 to carry out spacing fixed to second heat exchange tube 22, in order to prevent in transport or use, the position of second heat exchange tube 22 takes place to remove, and influences heat transfer effect even life.

It should be noted that, the partition board 30 may be coiled with one or at least two turns; when the partition plate 30 is coiled for one circle, only one clamping groove 30a can be arranged, and at the moment, the second heat exchange tube 22 is clamped in the clamping groove 30 a; when the separator 30 spirals at least two circles, each circle of separator 30 is provided with one clamping groove 30a, that is, at least two clamping grooves 30a can be arranged at intervals along the direction from the center to the edge of the tray body 10 to form a clamping channel, and at this time, the second heat exchange tube 22 is clamped in the clamping channel.

Further, referring to fig. 14 in combination, in an embodiment, the second heat exchange tube 22 includes a bent tube 22a and a straight tube 22b, the bent tube 22a is connected in series between the first heat exchange tube 21 and the straight tube 22b, the straight tube 22b has the water outlet end 2221, and the straight tube 22b is clamped in the clamping groove 30a.

The straight tube 22b is connected to the first heat exchange tube 21 in series by bending the tube 22a, so that the straight tube 22b is convenient to be clamped in the clamping groove 30a of the partition plate 30, and the second heat exchange tube 22 is limited and fixed.

For example, the first heat exchange tube 21 and the second heat exchange tube 22 may be integrally formed, and during the preparation, a complete tube body may be directly formed, and during the assembly process, the complete tube body is bent to form the spiral first heat exchange tube 21 and the second heat exchange tube 22 including the bent tube 22a and the straight tube 22 b.

Further, referring to fig. 14 in combination, in an embodiment, the second heat exchange tube 22 is located above the first heat exchange tube 21, and the clamping groove 30a is opened at the top edge of the partition plate 30.

So set up, through setting up the second heat exchange tube 22 in the top of first heat exchange tube 21 to with draw-in groove 30a card setting in the topside of baffle 30, in the assembly process, can be with the second heat exchange tube 22 card from the top of baffle 30 into draw-in groove 30a, in order to install the second heat exchange tube 22.

Further, referring to fig. 15 to 20 in combination, in still another embodiment, the bath waste water heat exchanging apparatus 100 may further include a tray 10, a heat storage structure 40, and a heat exchanging coil 20.

The tray body 10 is used for receiving bath wastewater, and a containing cavity is formed in the tray body 10; the heat storage structure 40 is arranged in the accommodating cavity and is in heat exchange connection with the tray body 10; the heat exchange coil 20 is disposed in the accommodating cavity and is in heat exchange connection with the heat storage structure 40, the heat exchange coil 20 has a water inlet end 211 and a water outlet end 221, the water inlet end 211 is used for being connected with a cold water supply inlet pipe, and the water outlet end 221 is used for being connected with a water inlet pipe of the electric water heater 200.

When a user uses the electric water heater to perform a bath, high-temperature waste water after the bath can flow to the tray body 10, heat of the bath waste water can be conducted to the heat storage structure 40 through the tray body 10 to be stored, the heat exchange coil 20 in heat exchange connection with the heat storage structure 40 is arranged in the accommodating cavity, the heating function of water in the heat exchange coil 20 is achieved, in the embodiment, the water inlet end 211 of the heat exchange coil 20 is connected with the cold water supply inlet pipe, the water outlet end 221 is connected with the water inlet pipe of the electric water heater 200, so that cold water of the cold water supply inlet pipe can flow into the water inlet pipe of the electric water heater 200 after being heated through the heat exchange pipe tray 30, the water inlet temperature of the electric water heater 200 is improved, the heating time of the electric water heater 200 is shortened, the waiting time of the user is reduced, and the user experience is improved.

It can be understood that the bath waste water heat exchanging device recovers and stores the heat of the bath high-temperature waste water in the heat storage structure 40 in the process of using the electric water heater 200 and generating the high Wen Xiyu waste water, and on the basis, the heat in the heat storage structure 40 can heat the water inlet of the electric water heater 200 in use, or after the electric water heater 200 stops being used, the heat is still stored in the heat storage structure 40, so that the water inlet when the electric water heater 200 is started next time can be heated. Alternatively, the heat storage structure 40 is fabricated from a heat storage material such as molten salt, high temperature concrete, metal alloy, or the like.

In practical application, the tray body 10 is used for receiving bath wastewater, it can be appreciated that the tray body 10 can be directly arranged below the water outlet structure of the electric water heater 200, so that water flowing out of the water outlet structure directly falls on the tray body 10 after being bathed, or is arranged at other positions to guide the bath wastewater to the tray body 10 through a pipeline. The heat storage structure 40 is connected to the tray 10 by heat exchange, which may be understood as a connection structure capable of heat exchange between the two, such as contact between the two. Further, it may be that the heat storage structure 40 is in contact with the upper surface of the tray 10, or in contact with the side surface of the tray 10, or in contact with the lower surface of the tray 10, or the like, as long as the heat storage structure 40 is capable of storing heat of the high Wen Xiyu wastewater through the tray 10. Accordingly, the heat storage structure 40 is in heat exchange connection with the heat exchange coil 20, which can be understood as a connection between the two that can perform heat exchange, for example, the heat exchange coil 20 is disposed at one side of the heat storage structure 40, or the heat exchange coil 20 is disposed inside the heat storage structure 40 in a penetrating manner.

The waste water of the bath waste water heat exchanging device can be high-temperature waste water after a user washes hands, washes dishes and other articles, and can be applied to a bathroom or a kitchen.

In practical application, the cross-sectional shape of the tray body 10 may be circular, oval, rectangular, etc., the heat exchange coil 20 may be a round tube, a corrugated tube, a fin type round tube, a fin type corrugated tube, etc., and the heat exchange coil 20 may be a copper tube, a stainless steel tube, etc., which may be specific according to practical use conditions, and is not limited herein.

In the bath waste water heat exchange device of the technical scheme of the utility model, the tray body 10 is used for receiving the bath waste water of the electric water heater 200, and the heat storage structure 40 in heat exchange connection with the tray body 10 and the heat exchange coil 20 in heat exchange connection with the heat storage structure 40 are arranged in the tray body 10, so that the heat of the bath waste water can be stored by the heat storage structure 40 through the tray body 10, and the water in the heat exchange coil 20 is further heated. In this embodiment, the water inlet end 211 of the heat exchange coil 20 is connected with the cold water supply inlet pipe, and the water outlet end 221 is connected with the water inlet pipe of the electric water heater 200, so that cold water of the cold water supply inlet pipe can flow into the water inlet pipe of the electric water heater 200 after being heated by the heat exchange tube disc 30, so as to raise the water inlet temperature of the electric water heater 200, thereby shortening the heating time of the electric water heater 200, reducing the waiting time of a user, and improving the user experience.

In one embodiment, referring to fig. 15 to 20, the tray body 10 includes an upper tray 12 and a lower tray 11, and the upper tray 12 is used for receiving bath waste water; the lower disc 11 is arranged below the upper disc 12 and is enclosed with the upper disc 12 to form the accommodating cavity; the heat storage structure 40 is disposed on the lower plate 11 and abuts against the bottom wall surface of the upper plate 12, and the heat exchange coil 20 is connected to the heat storage structure 40.

In this embodiment, for illustrating the structure of the tray body 10, the tray body 10 includes an upper tray 12 and a lower tray 11 disposed below the upper tray 12, the upper tray 12 is used for receiving bath waste water, the lower tray 11 is connected with the upper tray 12 to form a containing cavity for containing the heat storage structure 40 and the heat exchange coil 20, in order to ensure the heat storage effect of the heat storage structure 40, the heat storage structure 40 is mounted on the lower tray 11 and abuts against the bottom wall surface of the upper tray 12, so that the heat of the bath waste water received by the upper tray 12 can be smoothly conducted to the heat storage structure 40 through the upper tray 12 to be stored by the heat storage structure 40, the heat exchange coil 20 is connected with the heat storage structure 40, and the heat stored by the heat storage structure 40 can smoothly heat the water in the heat exchange coil 20, thereby realizing the water inlet temperature of the electric heater 200.

It can be appreciated that the upper disc 12 and the lower disc 11 are fixedly connected together by adopting a snap-in or screw manner, etc., so that the disassembly, assembly and maintenance are convenient. The upper plate 12 serves to conduct the heat of the bath waste water to the heat storage structure 40, and optionally, the upper plate 12 is made of a heat conducting member such as copper, stainless steel, aluminum or other materials with good heat conducting performance. The heat storage structure 40 and the heat exchange coil 20 are both mounted on the lower plate 11, so that the lower plate 11 can play a role of heat preservation and protection, and optionally, the lower plate 11 adopts a heat insulation member, such as plastic with good heat insulation effect or other heat insulation materials, and the like.

In order to further increase the residual heat utilization rate of the bath waste water, in an embodiment, the heat storage structure 40 is filled in the accommodating cavity, and the heat exchange coil 20 is embedded in the heat storage structure 40.

In this embodiment, the heat storage structure 40 is filled in the accommodating cavity, so that the contact area between the heat storage structure 40 and the upper plate 12 is increased, the heat exchange area of the heat storage structure and the upper plate is further increased, and the heat exchange efficiency is improved. In addition, the heat exchange coil 20 is embedded in the heat storage structure 40, and it can be understood that the heat storage structure 40 is wrapped outside the heat exchange coil 20, so as to increase the heat exchange area of the heat storage structure 40 and the heat exchange coil 20, and meanwhile, the heat storage structure 40 can also play a role in preserving heat of the heat exchange coil 20, so that heat in the heat exchange coil 20 is prevented from being dissipated, and the purpose of effectively improving the water inlet temperature of the electric water heater 200 is achieved.

Optionally, a mounting channel 41 is provided in the heat storage structure 40, and the heat exchange coil 20 is embedded in the mounting channel 41.

In an embodiment, referring to fig. 15 to 20, the lower tray 11 includes a first tray bottom 1111 and a first peripheral edge 1112, and the first tray bottom 1111 is disposed opposite to the upper tray 12; the first surrounding edge 1112 is surrounding the periphery of the first tray bottom 1111 and connected with the upper tray 12, and the first surrounding edge 1112, the first tray bottom 1111 and the upper tray 12 form the accommodating cavity; the first peripheral edge 1112 is provided with two mounting openings 101 through which the water inlet end 211 and the water outlet end 221 of the heat exchange coil 20 respectively pass.

In this embodiment, for the structure of the lower plate 11, the first plate bottom 1111 and the first surrounding edge 1112 are connected to form the lower plate 11, the upper plate 12 is connected to the first surrounding edge 1112 to form a closed accommodating cavity by surrounding the first plate bottom 1111, and then the upper surface of the heat storage structure 40 abuts against the bottom wall of the upper plate 12, and the lower surface of the heat storage structure 40 is mounted on the first plate bottom 1111, so that the heat storage structure 40 fills the entire accommodating cavity. The heat exchange coil 20 is disposed on the first tray bottom 1111, and it is understood that the heat exchange tubes of the heat exchange coil 20 are tiled in the heat storage structure 40, and the water inlet end 211 and the water outlet end 221 of the heat exchange coil 20 respectively pass through the two mounting openings 101 on the first peripheral edge 1112 to be connected with corresponding pipelines.

It can be appreciated that by arranging the two mounting openings 101 on the first peripheral edge 1112, the extending direction of the water inlet end 211 and the water outlet end 221 of the heat exchange coil 20 is consistent with the extending direction of the tray body 10, the structural layout is more compact, the structural integrity of the first tray bottom 1111 and the upper tray 12 is ensured, and the structural strength of the tray body 10 is improved. In practical application, the two mounting ports 101 may be disposed on the same side or different sides of the first peripheral edge 1112, in this embodiment, the two mounting ports 101 are disposed on the same side of the first peripheral edge 1112 in consideration of the arrangement of the heat exchange coil 20 or the layout of external pipelines, so that the length of the heat exchange coil 20 in the accommodating cavity can be prolonged while the pipeline is conveniently mounted, and the heat exchange area is increased.

Alternatively, the first tray bottom 1111 and the first peripheral edge 1112 may be integrally formed by mold molding or 3D printing.

It is understood that the arrangement of the heat exchange coils 20 at the first bottom 1111 may be according to practical situations, for example, may be S-shaped, spiral or other forms, and may be series or parallel, so long as a sufficient heat exchange tube length is ensured. In order to increase the contact area between the heat exchange coil 20 and the heat storage structure 40 and extend the length of the heat exchange coil 20 on the first bottom 1111, in this embodiment, the heat exchange coil 20 is serially distributed in the heat storage structure 40, so as to facilitate the arrangement of pipes.

Specifically, the heat exchange coil 20 includes a first heat exchange tube 21 and a second heat exchange tube 22 connected in series with the first heat exchange tube 21, the first heat exchange tube 21 is connected with the water inlet end 211, and the second heat exchange tube 22 is connected with the water outlet end 221; the first heat exchange tube 21 comprises a plurality of sub heat exchange tubes which are distributed at intervals along the first direction, and the sub heat exchange tubes are connected end to end in sequence; one end of the second heat exchange tube 22 is connected to an end portion of the first heat exchange tube 21 remote from the water inlet end 211, and the other end extends toward the water outlet end 221 along the first direction. It can be appreciated that the first heat exchange tubes 21 form a serpentine structure connected in series, so that the first heat exchange tubes 21 are distributed more uniformly in the heat storage structure 40, and cold water entering from the water inlet end 211 can be fully heat exchanged with the heat storage structure 40 by connecting the first heat exchange tubes 21 with the water inlet end 211, thereby improving heat exchange efficiency. The first heat exchange pipe 21 is disposed more in the middle region of the heat storage structure 40 to secure a more effective heating effect. The water heated by the first heat exchange tube 21 flows from the second heat exchange tube 22 to the water outlet 221 into the water inlet pipe of the electric water heater 200.

In an embodiment, referring to fig. 15 to 20, the first tray bottom 1111 is provided with a first support 131 for supporting the heat exchange coil 20. In this embodiment, the first supporting member 131 plays a role in supporting the heat exchange coil 20, and improves the reliability of the overall structure. The first support 131 supports the heat exchange coil 20 such that the heat exchange coil 20 is spaced from the first bottom 1111, preventing heat loss due to heat exchange between the heat exchange coil 20 and the first bottom 1111.

In one embodiment, the first tray bottom 1111 is provided with a plurality of second supporting members 132 for supporting the upper tray 12, and the plurality of second supporting members 132 are abutted against the bottom wall of the upper tray 12.

In the present embodiment, the plurality of second supporting members 132 are provided on the first tray bottom 1111, and the plurality of second supporting members 132 are used to support the upper tray 12, so as to prevent the upper tray 12 from being deformed after being stressed. The end of the second supporting members 132 facing away from the first tray bottom 1111 abuts against the bottom wall of the upper tray 12, so that the deformation preventing effect of the upper tray 12 is better, the second supporting members 132 can be uniformly distributed on the first tray bottom 1111 at intervals, and the number of supporting points of the second supporting members 132 on the upper tray 12 is increased, so that the stress of the upper tray 12 is more uniform.

In practical application, the distribution manner of the plurality of second supporting members 132 may be according to practical situations, for example, may be regular distribution such as an array or scattered irregular distribution, or alternatively, the plurality of second supporting members 132 are distributed between two adjacent sub heat exchange tubes at intervals, so as to avoid interference with the arrangement of the sub heat exchange tubes. In this embodiment, a plurality of the second supporting members 132 are distributed on the first tray bottom 1111 in an array shape in consideration of the installation layout of the second supporting members 132 and the first tray bottom 1111, the molding of the mold, and the like. Optionally, the second support 132 is of unitary construction with the first tray bottom 1111.

In practical applications, the structural shape of the second supporting member 132 may be according to practical situations, such as a supporting column structure, a supporting bar structure, or a supporting plate structure. In this embodiment, in order to ensure the supporting effect and the heat exchanging effect at the same time, the second supporting member 132 adopts a supporting column structure, and the cross-sectional shape of the second supporting member 132 may be cross-shaped, m-shaped, cylindrical, Y-shaped, etc.

In an embodiment, referring to fig. 15 to 20, the upper tray 12 includes a second tray bottom 12b and a second peripheral edge 12c, and the second tray bottom 12b is connected to the lower tray 11 and encloses the accommodating cavity with the lower tray 11; the second surrounding edge 12c is surrounded on the periphery of the second tray bottom 12b, and forms a water collecting tank 12a for receiving bath waste water with the second tray bottom 12b, and the second surrounding edge 12c is provided with a water outlet 102 communicated with the water collecting tank 12 a.

The structure of the upper plate 12 is exemplified in this embodiment, and the second plate bottom 12b and the second surrounding edge 12c are connected to form a water collecting tank 12a, so that the bath waste water can stay in the water collecting tank 12a for a sufficient time, the contact time between the bath waste water and the second plate bottom 12b is prolonged, and the heat exchange time between the bath waste water and the heat storage structure 40 through the second plate bottom 12b is prolonged, so that the heat storage structure 40 can absorb the heat of the bath waste water more fully, and the residual temperature utilization rate of the bath waste water is improved.

Optionally, the second tray bottom 12b is disposed opposite to the first tray bottom 1111 of the lower tray 11, and the bottom periphery of the second tray bottom 12b is connected to the first peripheral edge 1112, so that the second tray bottom 12b, the first peripheral edge 1112 and the first tray bottom 112 enclose to form a relatively closed accommodating cavity, it is understood that the first tray bottom 1111 and the first peripheral edge 1112 are both made of heat insulation members, and the second tray bottom 12b is made of heat conductive members, so that after the heat of the bath wastewater in the water collecting tank 12a is conducted from the second tray bottom 12b to the heat storage structure 40, the heat is conducted to the water in the heat exchange coil 20 more, and the heat is not dissipated from other components, so as to ensure a larger waste heat recovery rate.

Alternatively, the second tray bottom 12b may have a "chevron" pattern distributed thereon to facilitate heat transfer.

In this embodiment, the second peripheral edge 12c is provided with a water outlet 102 in communication with the water collecting tank 12a, so that the high Wen Xiyu waste water flows out from the water outlet 102 after heat is conducted to the heat storage structure 40 in the water collecting tank 12a, and it is understood that the water outlet 102 can be externally connected with a floor drain or a sewer, etc., and the heat of the bath waste water is recovered and then discharged.

In practical applications, the shape and structure of the drain opening 102 may be determined according to practical situations, for example, a notch shape, a hole shape, or the like. In this embodiment, in order to facilitate drainage, the drain opening 102 is configured in a notch shape formed at the upper edge of the second peripheral edge 102. In order to further improve the residual heat utilization rate of the bath waste water, the water outlet 102 may be configured to include a notch structure with different opening depths, wherein the number of water outlets 102 with larger opening depth is smaller than the number of water outlets 102 with smaller opening depth, so that water entering the water collecting tank 12a can stay for a sufficient time, the heat exchange time between the bath waste water and the heat storage structure 40 is prolonged, and meanwhile, when the water quantity is too much, water can be discharged from two water outlets 102 with different opening depth sizes at the same time, so as to accelerate the water discharge speed.

Alternatively, the number of the drain openings 102 is plural, and the plurality of drain openings 102 are spaced around the periphery of the second peripheral edge 12 c.

Further, referring to fig. 21 to 27, in still another embodiment, the bath waste water heat exchanging apparatus 100 may further include a tray 10, the tray 10 having a heat conducting portion 124a contacting with the bath waste water, a heat exchanging flow channel 10d heat-exchanging connected with the heat conducting portion 124a being formed in the tray 10, the tray 10 being provided with a water inlet end 211 and a water outlet end 221 communicating with the heat exchanging flow channel 10d, the water inlet end 211 being used for connecting with a cold water supply pipe 400, and the water outlet end 221 being used for connecting with a water inlet pipe 300 of the electric water heater 200.

When a user uses the electric water heater to perform a bath, high-temperature waste water after the bath can flow to the tray body 10, a heat exchange flow channel 10d is formed in the tray body 10, heat of the bath waste water can be conducted to the heat exchange flow channel 10d through a heat conducting part 124a of the tray body 10, a water inlet end 211 of the heat exchange flow channel 10d is connected with a cold water supply water inlet pipe 400, a water outlet end 221 of the heat exchange flow channel is connected with a water inlet pipe 300 of the electric water heater 200, so that the heat of the bath waste water can heat water in the heat exchange flow channel 10d, cold water of the cold water supply water inlet pipe can flow into the water inlet pipe of the electric water heater 200 after being heated through the heat exchange flow channel 10d, the water inlet temperature of the electric water heater 200 is improved, the heating time of the electric water heater 200 is shortened, the waiting time of the user is shortened, and the user experience is improved.

It can be appreciated that the tray body 10 is used for receiving bath waste water, the tray body 10 can be directly arranged below the water outlet structure of the electric water heater 200, so that water flowing out of the water outlet structure directly falls on the tray body 10 after being bathed, or is arranged at other positions to guide the bath waste water to the tray body 10 through a pipeline. The heat conductive portion 124a of the tray 10 may be an upper surface, a side surface, a lower surface, or the like of the tray 10, as long as the heat exchanging flow path 10d inside the tray 10 can be in heat exchanging connection with the heat conductive portion 124a, for example, the heat exchanging flow path 10d is in contact with the heat conductive portion 124a, or the heat conductive portion 124a is provided as a partial region or the like forming the heat exchanging flow path 10 d.

In practical application, the cross-sectional shape of the tray body 10 may be circular, elliptical, rectangular, etc., and the cross-sectional area of the heat exchange flow channel 10d may be circular, elliptical, U-shaped, rectangular, or other special-shaped characteristics, etc., and may be specific according to the actual use condition, and is not limited herein.

In the bath waste water heat exchange device according to the technical scheme of the utility model, the tray body 10 is used for receiving the bath waste water of the electric water heater 200, the tray body 10 is provided with the heat conduction part 124a contacted with the bath waste water, and the heat exchange flow channel 10d in heat exchange connection with the heat conduction part 124a is formed in the tray body 10, so that the heat of the bath waste water can be conducted to the heat exchange flow channel 10d through the heat conduction part 124a, and the water in the heat exchange flow channel 10d is heated. In this embodiment, the water inlet end 211 of the heat exchange flow channel 10d is connected with the cold water supply water inlet pipe 400, and the water outlet end 221 is connected with the water inlet pipe 300 of the electric water heater 200, so that cold water of the cold water supply water inlet pipe can flow into the water inlet pipe of the electric water heater 200 after being heated by the heat exchange flow channel 10d, so as to raise the water inlet temperature of the electric water heater 200, thereby shortening the heating time of the electric water heater 200, reducing the waiting time of a user, and improving the user experience.

In an embodiment, referring to fig. 21 to 27, the tray body 10 includes an upper tray 12 and a lower tray 11, the upper tray 12 having the heat conductive portion 124a; the lower disc 11 is arranged below the upper disc 12 and is connected with the upper disc 12; the upper plate 12 and the lower plate 11 are enclosed to form the heat exchanging channel 10d, and the heat exchanging channel 10d is in heat exchanging connection with the heat conducting portion 124 a.

The structure of the tray body 10 is illustrated in this embodiment, the tray body 10 includes an upper tray 12 and a lower tray 11 disposed below the upper tray 12, the upper tray 12 is used for receiving bath wastewater, the heat conducting portion 124a is disposed on the upper tray 12, and the upper tray 12 is connected with the lower tray 11 to form the heat exchange flow channel 10d, so that the heat conducting portion 124a is in heat conducting contact with water in the heat exchange flow channel 10d, and a heating function of using the residual temperature of the bath wastewater to heat the water in the heat exchange flow channel 10d is achieved, so as to raise the water inlet temperature of the electric heater 200.

The heat exchange flow channel 10d is formed by enclosing the upper disc 12 and the lower disc 11, and it can be understood that the upper disc 12 is provided with a groove and the lower disc 11 are enclosed to form the heat exchange flow channel 10d, or the lower disc 11 is provided with a groove and the upper disc 12 are enclosed to form the heat exchange flow channel 10d, or the upper disc 12 and the lower disc 11 are simultaneously provided with a groove and are combined to form the heat exchange flow channel 10d. The specific structure may be determined according to the actual situation, and is not limited herein. Alternatively, the heat conducting portion 124a is a bottom wall of the upper plate 12, and the heat conducting portion 124a is formed as a partial structure of the heat exchanging flow passage 10d.

It can be appreciated that the upper disc 12 and the lower disc 11 are fixedly connected together by adopting a snap-in or screw manner, etc., so that the disassembly, assembly and maintenance are convenient. The upper plate 12 serves to conduct the heat of the bath waste water to the heat exchanging flow passage 10d, and optionally, the upper plate 12 is made of a heat conducting member such as copper, stainless steel, aluminum or other materials with good heat conducting performance. Alternatively, the bottom wall 11 may serve as a thermal insulation shield, and the bottom wall 11 may be made of a thermal insulation material, such as plastic or other thermal insulation material with good thermal insulation effect.

In an embodiment, the lower disc 11 includes a first disc body 1113 connected to the upper disc 12, the first disc body 1113 is recessed toward a direction away from the upper disc 12 to form a flow channel groove 11a, and the upper disc 12 abuts against the first disc body 1113 to cover the flow channel groove 11a to form the heat exchange flow channel 10d.

In this embodiment, the first disc 1113 is connected to the upper disc 12, and a heat exchange flow channel 10d is formed between the first disc 1113 and the upper disc 12, specifically, the first disc 1113 is recessed towards a direction away from the upper disc 12 to form a flow channel groove 11a, and it is understood that the flow channel groove 11a has an open groove structure, and the upper surface of the upper disc 12 and the upper surface of the first disc 1113 are abutted to realize the sealing of the flow channel groove 11a to form a relatively closed heat exchange flow channel 10d, so that water flowing into the heat exchange flow channel 10d from the cold water supply inlet pipe 400 cannot overflow to other places or cannot be polluted, and the cleanliness of water entering the water inlet pipe of the electric water heater 200 is ensured.

Alternatively, the cross-sectional shape of the flow channel groove 11a may be semicircular, rectangular, U-shaped, or the like. In this embodiment, the cross-sectional shape of the flow channel 11a adopts a U-shaped structure in consideration of the smoothness of the water flow, the water flow resistance, and the like, that is, the U-shaped flow channel is concavely formed on the first disc 1113, so that the smoothness of the water flow can be improved, and the water flow resistance can be reduced.

In order to further improve the tightness of the water in the heat exchange flow channel 10d, in an embodiment of the present utility model, the bath waste water heat exchanging device further includes a sealing member 13 distributed along the edge of the flow channel groove 11a, and the sealing member 13 is sandwiched between the upper disc 12 and the first disc body 1113.

In this embodiment, after the upper plate 12 is assembled with the first plate 1113, the sealing member 13 is clamped by the upper plate 12 and the first plate 1113, so that water in the flow channel 11a is prevented from overflowing from the side, water interference between two adjacent flow channels is avoided, meanwhile, the influence of overflowing water flow on the connection reliability of the upper plate 12 and the first plate 1113 is avoided, the tightness of the heat exchange flow channel 10d is ensured, and meanwhile, the reliability of the overall structure is improved. It will be appreciated that the seals 13 are disposed on opposite sides of the flow channel 11a and extend along the path of the flow channel 11a to achieve a better sealing effect.

Alternatively, the sealing member 13 may be a rubber strip structure having a certain plasticity.

In one embodiment, referring to fig. 21 to 27, the lower tray 11 further includes a first peripheral edge 1112 disposed around a periphery of the first tray 1113, and the first peripheral edge 1112 is disposed on a side of the first tray 1113 facing away from the upper tray 12; the water inlet end 211 and the water outlet end 221 of the heat exchange flow channel 10d are both disposed on the first peripheral edge 1112.

In this embodiment, a first peripheral edge 1112 is disposed on a side of the first disc 1113 facing away from the upper disc 12, and it is understood that the first peripheral edge 1112 plays a role in supporting and fixing the first disc 1113, so that the first disc 1113 has enough space concave inwards on a side facing away from the upper disc 12 to form a runner groove 11a, so as to prevent the runner groove 11a from interfering with the ground or the installation platform when the lower disc 11 is installed on the ground or the installation platform. In addition, the first surrounding edge 1112 is arranged around the periphery of the first disc 1113, so that the supporting effect of the first surrounding edge 1112 on the first disc 1113 is more uniform, and the installation stability of the first disc 1113 is ensured.

It can be appreciated that the heat exchange flow channel 10d is formed by enclosing the flow channel groove 11a on the first disc 1113 and the upper disc 12, and the flow channel groove 11a is formed by concave shape of the first disc 1113, the water inlet end 211 and the water outlet end 221 are disposed on the first enclosing edge 1112, so that the water inlet end 211 and the water outlet end 221 are located at the same height position as the heat exchange flow channel 10d, and the situation that the water flow resistance is increased due to the large height difference between the water inlet end 211, the water outlet end 221 and the heat exchange flow channel 10d is avoided, wherein the water inlet end 211 is used for being connected with the cold water supply inlet pipe, and the water outlet end 221 is used for being connected with the water inlet pipe 300 of the electric water heater 200. In addition, the water inlet 211 and the water outlet 221 are disposed on the first peripheral edge 1112, so as to ensure structural integrity of the first disc 1113 and the upper disc 12, and improve structural strength of the disc 10.

In practical application, the water inlet end 211 and the water outlet end 221 may be disposed on the same side or different sides of the first peripheral edge 1112, in this embodiment, the heat exchange area is increased by considering the arrangement of the heat exchange flow channel 10d or the layout of external pipelines, and the like, and the water inlet end 211 and the water outlet end 221 are disposed on the same side of the first peripheral edge 1112, so that the pipeline installation is facilitated, and meanwhile, the length of the heat exchange flow channel 10d in the accommodating cavity can be prolonged.

Alternatively, the first tray 1113 and the first peripheral edge 1112 may be formed by mold molding or 3D printing.

Further, in the thickness direction, the height position of the bottom of the flow channel groove 10a is higher than the bottom height position of the first peripheral edge 1112.

It can be appreciated that, in the foregoing embodiment, the flow channel groove 10a is formed by recessing the first disc 1113 in a direction away from the upper disc 12, and the first peripheral edge 1112 is disposed on a side of the first disc 1113 away from the upper disc 12, so that both the first peripheral edge 1112 and the groove bottom of the flow channel groove 10a are disposed on a side of the first disc 1113 away from the upper disc 12, and in this embodiment, the height position of the groove bottom of the flow channel groove 10a is set to be higher than the bottom edge height position of the first peripheral edge 1112 in the thickness direction, so as to prevent the groove bottom of the flow channel groove 10a from interfering with the first peripheral edge 1112, so that the first disc 1113 is supported by the first peripheral edge 1112, and the installation stability of the lower disc 11 is ensured.

In practical application, referring to fig. 21 to 27, the arrangement manner of the flow channel grooves 11a in the first disc 1113 may be according to practical situations, for example, may be S-shaped, spiral or other forms, and may be series-distributed or parallel-distributed, so long as a sufficient heat exchange pipeline length is ensured. In order to increase the contact area between the heat exchange flow channel 10d and the upper plate 12, the length of the flow channel groove 11a on the first plate bottom 111 is prolonged, and in this embodiment, the flow channel grooves 11a are distributed in series on the first plate body 1113, so as to facilitate molding and manufacturing. In one embodiment of the present utility model, the runner groove 11a includes a plurality of sub runners arranged at intervals, and the plurality of sub runners are arranged in series end to end in the first disc 1113. Optionally, the water inlet end 211 and the water outlet end 221 are located in the middle area of the distribution direction of the multiple sub-channels, at this time, the multiple sub-channels on the water inlet end 211 side and the multiple sub-channels on the water outlet end 221 side are symmetrically arranged, so that the distribution of the heat exchange channels 10d is more regular and uniform, the heat exchange efficiency is improved, and meanwhile, the molding process cost is simplified.

In an embodiment, referring to fig. 21 to 27, the upper tray 12 includes a second tray 124 and a second peripheral edge 12c, the second tray 124 is connected to the lower tray 11, and the second tray 124 is formed as a heat conducting portion 124a; the second surrounding edge 12c is surrounded on the periphery of the second tray 124, and forms a water collecting tank 12a for receiving bath waste water with the second tray 124, and the second surrounding edge 12c is provided with a water outlet 103 communicated with the water collecting tank 12 a.

In this embodiment, for the structure of the upper disc 12, the second disc 124 and the second surrounding edge 12c are connected to form the water collecting tank 12a, so that the bath waste water can stay in the water collecting tank 12a for a sufficient time, the contact time between the bath waste water and the second disc 124 is prolonged, the heat exchange time between the bath waste water and the water in the heat exchange flow channel 10d through the second disc 124 is further prolonged, and the residual heat utilization rate of the bath waste water is improved.

Optionally, the second tray 124 is disposed in abutment with the first tray 1113 of the bottom tray 11, so that the second tray 124 covers the runner groove 11a of the first tray 1113 to form the heat exchange runner 10d, it can be understood that the first tray 1113 and the first peripheral edge 1112 both use heat insulation elements, and the second tray 124 uses heat conduction elements, so that the heat of the bath wastewater in the water collecting tank 12a is conducted from the second tray 124 to the heat exchange runner 10d to heat the water, and the heat is not emitted from other components, so as to ensure a larger waste heat recovery rate.

Alternatively, the second tray 124 may have a "chevron" pattern disposed thereon to facilitate heat transfer.

In this embodiment, the second peripheral edge 12c is provided with the water outlet 103 which is communicated with the water collecting tank 12a, so that the high Wen Xiyu waste water flows out from the water outlet 103 after heat is conducted to the heat exchanging channel 10d in the water collecting tank 12a, it is understood that the water outlet 103 can be externally connected with a floor drain or a sewer, and the like, and the heat of the bath waste water is recovered and then discharged.

In practical use, the shape and structure of the drain opening 103 may be determined according to practical situations, for example, a notch shape, a hole shape, or the like. In this embodiment, in order to facilitate drainage, the drain opening 103 is configured in a notch shape formed at the upper edge of the second peripheral edge 102. In order to further improve the residual heat utilization rate of the bath waste water, the water outlet 103 may be configured to include a notch structure having different opening depths, wherein the number of water outlets 103 having a larger opening depth is smaller than the number of water outlets 103 having a smaller opening depth, so that water entering the water collecting tank 12a can stay for a sufficient time, the heat exchange time between the bath waste water and the heat storage structure 20 is prolonged, and simultaneously, when the water amount is too much, water can be simultaneously discharged from two water outlets 103 having different opening depth sizes, thereby accelerating the water discharge speed.

Alternatively, the number of the water discharge openings 103 is plural, and the plurality of water discharge openings 103 are arranged at intervals around the periphery of the second peripheral edge 12 c.

Further, referring to fig. 28 to 34, in still another embodiment, the bath waste water heat exchanging apparatus 100 includes a tray 10, the tray 10 has a heat conducting portion 124a contacting with the bath waste water, a heat exchanging channel 10d connected to the heat conducting portion 124a by heat exchanging is formed in the tray 10, the tray 10 is provided with a water inlet end 211 and a water outlet end 221102 connected to the heat exchanging channel 10d, the water inlet end 211 is used for connecting with a cold water supply pipe 400, the water outlet end 221102 is used for connecting with a water inlet pipe 300 of the electric water heater 200, and at least part of channels of the heat exchanging channels 10d are connected in parallel.

When a user uses the electric water heater to perform a bath, high-temperature waste water after the bath can flow to the tray body 10, a heat exchange flow channel 10d is formed in the tray body 10, heat of the bath waste water can be conducted to the heat exchange flow channel 10d through a heat conducting part 124a of the tray body 10, a water inlet end 211 of the heat exchange flow channel 10d is connected with a cold water supply water inlet pipe 400, a water outlet end 221102 is connected with a water inlet pipe 300 of the electric water heater 200, so that heat of the bath waste water can heat water in the heat exchange flow channel 10d, cold water of the cold water supply water inlet pipe can flow into the water inlet pipe of the electric water heater 200 after being heated through the heat exchange flow channel 10d, the water inlet temperature of the electric water heater 200 is improved, the heating time of the electric water heater 200 is shortened, the waiting time of the user is shortened, and the user experience is improved.

Cold water enters the heat exchange flow passage 10d from the water inlet end 211 and flows into the water inlet pipe of the electric water heater 200 from the water outlet end 221102 after heat exchange, and at least part of the flow passages of the heat exchange flow passage 10d are arranged in parallel, so that the water entering the heat exchange flow passage 10d can flow out of the water outlet end 221102 into the electric water heater 200 more quickly after being heated, thereby improving the efficiency of hot water and further shortening the waiting time of a user.

In the bath waste water heat exchange device according to the technical scheme of the utility model, the tray body 10 is used for receiving the bath waste water of the electric water heater 200, the tray body 10 is provided with the heat conduction part 124a contacted with the bath waste water, and the heat exchange flow channel 10d in heat exchange connection with the heat conduction part 124a is formed in the tray body 10, so that the heat of the bath waste water can be conducted to the heat exchange flow channel 10d through the heat conduction part 124a, and the water in the heat exchange flow channel 10d is heated. In this embodiment, the water inlet end 211 of the heat exchange flow channel 10d is connected with the cold water supply water inlet pipe 400, the water outlet end 221102 is connected with the water inlet pipe 300 of the electric water heater 200, and at least part of the flow channels of the heat exchange flow channel 10d are connected in parallel, so that cold water of the cold water supply water inlet pipe can flow into the water inlet pipe of the electric water heater 200 more quickly after being heated by the heat exchange flow channel 10d, thereby quickly improving the water inlet temperature of the electric water heater 200, shortening the heating time of the electric water heater 200, reducing the waiting time of a user, and improving the user experience.

In an embodiment, referring to fig. 30 to 32, the heat exchange flow channel 10d includes two connected flow channel groups a, one of which is in communication with the water inlet end 211 and the other of which is in communication with the water outlet end 221102; at least one of the two flow channel groups a has at least two sub-flow channels a01 connected in parallel.

The embodiment is illustrated with respect to the distribution mode of the heat exchange flow channel 10d, the heat exchange flow channel 10d includes two flow channel groups a, and the two flow channel groups a are respectively communicated with the water inlet end 211 and the water outlet end 221102, so that cold water flows from the water inlet end 211, flows through the two flow channel groups a for heating, and then flows out from the water outlet end 221102. It can be appreciated that the two flow channel groups a may be connected in series or in parallel, and when the two flow channel groups a are connected in series, cold water enters one flow channel group a from the water inlet end 211 for heating, and then enters the other flow channel group a for heating; when the two flow channels are connected in parallel, cold water can be split into two flow channel groups A at the same time for heating. In this embodiment, the two flow channel groups a are connected in series, so that the circulation speed of water flow in the tray body 10 is increased, and the sufficiency of water flow heating is ensured.

At least one of the two flow channel groups a has at least two parallel sub-flow channels a01, and one of the two flow channel groups a may have at least two parallel sub-flow channels a01, or both of the two flow channel groups a may have at least two parallel sub-flow channels a01.

Further, at least two sub-runners A01 are arranged in the tray body 10 at intervals in parallel, so that heat exchange uniformity is improved, and better heating effect is ensured.

In an embodiment, the flow channel group a includes a water inlet section A1, a flow dividing section A2, a flow collecting section A3 and a water outlet section A4, the flow dividing section A2 is connected with the water inlet section A1 and the at least two parallel sub-flow channels a01, and the flow collecting section A3 is connected with the at least two parallel sub-flow channels a01 and the water outlet section A4.

The distribution manner of the flow path group a in this embodiment is illustrated, and water enters from the water inlet section A1, is split into at least two parallel sub-flow paths a01 through the split flow section A2 for heat exchange, is then converged into the water outlet section A4 by the flow collecting section A3, and finally flows out from the water outlet end 221102 into the water inlet pipe of the electric water heater 200. It can be understood that the water flow is split into each parallel sub-flow passage a01, and then flows out in a converging manner, when in practical application, at least two parallel sub-flow passages a01 can be distributed at the area of the heat conducting part 124a of the tray body 10, so that the heat exchange uniformity is improved, and a better heating effect is ensured. Alternatively, the sub-flow channels a01 in the two flow channel groups a are all distributed in parallel in the tray body 10 at intervals.

Optionally, the split-flow section A2 has a water inlet end and at least two water outlet ends, the water inlet end of the split-flow section A2 is connected with the water inlet section A1, and the at least two water outlet ends of the split-flow section A2 are respectively and correspondingly connected with at least two sub-flow channels a01; and/or, the current collecting section A3 is provided with at least two water inlet ends and one water outlet end, at least two water inlet ends of the current collecting section A3 are respectively and correspondingly connected with at least two sub-flow channels A01, and the water outlet end of the current collecting section A3 is connected with the water outlet section A4.

It will be appreciated that the diversion section A2 serves to divert water from the water inlet section A1 into the respective sub-flow passages a01, and the collection section A3 serves to collect water from the respective sub-flow passages a01 into the water outlet section A4. In practical application, the number and the splitting manner of the water outlet ends of the splitting section A2 may be determined according to practical situations, for example, a manner of directly connecting the water inlet ends and the water outlet ends may be a direct one-to-two manner, a one-to-many manner, or a manner of indirectly connecting the water inlet ends and the water outlet ends (similar to a splitting manner) may be a manner of, for example, a one-to-two manner, a two-to-four manner, a four-to-eight manner, etc. In this embodiment, considering the uniformity of the water flow, the diversion section A2 adopts the second diversion mode. Correspondingly, the number of the water inlet ends and the current collecting mode of the current collecting section A3 can be determined according to practical situations, and the number of the water inlet ends is equal to that of the sub-runners A01, for example, the water inlet ends and the water outlet ends can be directly connected in two pairs, one pair or more pairs, or the water inlet ends and the water outlet ends can be indirectly connected in eight current collecting modes, for example, four current collecting modes, two current collecting modes, and the like. In this embodiment, in order to reduce the resistance of the water flow, the collecting section A3 adopts the second collecting mode.

In practical application, the water inlet end 211 and the water outlet end 221102 may be disposed on the same side or different sides of the tray body 10, in this embodiment, the water inlet end 211 and the water outlet end 221102 are disposed on the same side of the tray body 10 in consideration of the arrangement of the heat exchange flow channels 10d or the layout of external pipelines, so that the length of the heat exchange flow channels 10d can be prolonged and the heat exchange area can be increased while the pipelines are conveniently installed.

In an embodiment, referring to fig. 28 to 34, the tray body 10 includes an upper tray 12 and a lower tray 11, and the upper tray 12 has the heat conductive portion 124a; the lower disc 11 is arranged below the upper disc 12 and is connected with the upper disc 12; the upper plate 12 and the lower plate 11 are enclosed to form the heat exchanging channel 10d, and the heat exchanging channel 10d is in heat exchanging connection with the heat conducting portion 124 a.

In order to further improve the tightness of the water in the heat exchange flow channel 10d, in an embodiment of the present utility model, the bath waste water heat exchanging device further includes a sealing member distributed along the edge of the flow channel groove 11a, and the sealing member is sandwiched between the upper disc 12 and the first disc body 1113.

In this embodiment, after the upper plate 12 is assembled with the first plate 1113, the sealing member is clamped by the upper plate 12 and the first plate 1113, so that water in the flow channel 11a is prevented from overflowing from the side, water interference between two adjacent flow channels is avoided, meanwhile, the influence of overflowing water flow on the connection reliability of the upper plate 12 and the first plate 1113 is avoided, the tightness of the heat exchange flow channel 10d is ensured, and meanwhile, the reliability of the integral structure is improved. It will be appreciated that the seals are provided on opposite sides of the flow channel 11a and extend along the path of the flow channel 11a to achieve a better sealing effect.

Alternatively, the sealing member may be a rubber strip structure having a certain plasticity.

In one embodiment, referring to fig. 28 to 34, the lower disc 11 further includes a first peripheral edge 1112 disposed around the periphery of the first disc 1113, and the first peripheral edge 1112 is disposed on a side of the first disc 1113 facing away from the upper disc 12; the water inlet end 211 and the water outlet end 221102 of the heat exchange flow channel 10d are both disposed on the first peripheral edge 1112.

It will be appreciated that the heat exchange flow channel 10d is formed by enclosing the flow channel groove 11a on the first disc 1113 and the upper disc 12, and the flow channel groove 11a is formed by concave shape of the first disc 1113, the water inlet end 211 and the water outlet end 221102 are disposed on the first enclosing edge 1112, so that the water inlet end 211 and the water outlet end 221102 are located at the same height position as the heat exchange flow channel 10d, and the situation that the water flow resistance is increased due to the large height difference between the water inlet end 211, the water outlet end 221102 and the heat exchange flow channel 10d is avoided, wherein the water inlet end 211 is used for being connected with the cold water supply inlet pipe, and the water outlet end 221102 is used for being connected with the water inlet pipe 300 of the electric water heater 200. In addition, the water inlet 211 and the water outlet 221102 are disposed on the first peripheral edge 1112, so that the structural integrity of the first disc 1113 and the upper disc 12 is ensured, and the structural strength of the disc 10 is improved.

In an embodiment, referring to fig. 28 to 34, the upper tray 12 includes a second tray 124 and a second peripheral edge 12c, the second tray 124 is connected to the lower tray 11, and the second tray 124 is formed as a heat conducting portion 124a; the second surrounding edge 12c is surrounded on the periphery of the second tray 124, and forms a water collecting tank 12a for receiving bath waste water with the second tray 124, and the second surrounding edge 12c is provided with a water outlet 102 communicated with the water collecting tank 12 a.

In this embodiment, the second peripheral edge 12c is provided with the water outlet 102 in communication with the water collecting tank 12a, so that the high Wen Xiyu waste water flows out from the water outlet 102 after heat is conducted to the heat exchanging channel 10d in the water collecting tank 12a, it is understood that the water outlet 102 can be externally connected with a floor drain or a sewer, and the like, and the heat of the bath waste water is recovered and then discharged.

In practical applications, the shape and structure of the drain opening 102 may be determined according to practical situations, for example, a notch shape, a hole shape, or the like. In this embodiment, in order to facilitate drainage, the drain opening 102 is configured in a notch shape formed at the upper edge of the second peripheral edge 102. In order to further improve the residual heat utilization rate of the bath waste water, the water outlet 102 may be configured to include a notch structure with different opening depths, wherein the number of water outlets 102 with larger opening depth is smaller than the number of water outlets 102 with smaller opening depth, so that water entering the water collecting tank 12a can stay for a sufficient time, the heat exchange time between the bath waste water and the heat storage structure 20 is prolonged, and meanwhile, when the water quantity is too much, water can be discharged from two water outlets 102 with different opening depth sizes at the same time, so as to accelerate the water discharge speed.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An electric water heating system, comprising:

electric water heater;

2. The electric water heating system as claimed in claim 1, wherein the bath waste water heat exchange device comprises:

3. The electric water heating system of claim 2, wherein the water inlet end and the water outlet end are both disposed proximate an edge of the tray body;

4. The electric water heating system as recited in claim 2, wherein the bath waste water heat exchanging device further comprises a partition plate, the partition plate is arranged in the waste water collecting cavity and forms a first spiral flow passage and a second spiral flow passage with the inner wall of the tray body in a surrounding manner, the first spiral flow passage and the second spiral flow passage are communicated with the waste water collecting hole and the drain hole, the first heat exchanging pipe is spirally arranged along the extending direction of the first spiral flow passage, and the second heat exchanging pipe is spirally arranged along the extending direction of the second spiral flow passage.

5. The electric water heating system as recited in claim 4, wherein the partition includes a first partition and a second partition disposed at intervals, the first partition and the second partition being disposed in the waste water collecting chamber and each being spirally extended in a direction from a center of the tray body to an edge, so that the first spiral flow channel and the second spiral flow channel are formed by enclosing inner walls of the first partition, the second partition and the tray body.

6. The electric water heating system as claimed in claim 5, wherein a material reducing groove is concavely formed in the lower surface of the tray body, and the material reducing groove is arranged corresponding to the first partition plate and/or the second partition plate.

7. An electric water heating system as set forth in claim 5 wherein said first and second baffles are positioned at the same elevation such that said first and second heat exchange tubes are disposed in a double helix extending at the same elevation.

8. An electric water heating system as claimed in any one of claims 2 to 7, wherein the waste water collection aperture is provided in an upper surface of the tray.

9. The electric water heating system as claimed in claim 8, wherein the waste water collection hole is provided corresponding to a center of the tray body;

And/or the waste water collecting hole cover is provided with a filter screen;

10. An electric water heating system as claimed in any one of claims 2 to 7, wherein the drain holes are provided in a lower surface of the tray body and/or a side wall surface of the tray body.

11. The electric water heating system as claimed in claim 10, wherein when the drain hole is formed in the lower surface of the tray body, an annular rib is convexly formed on the outer periphery of the lower surface of the tray body, a drain groove is formed by encircling the annular rib and the lower surface of the tray body, an opening penetrating to the inner side wall is formed in the outer side wall of the annular rib, and the drain hole is communicated with the opening through the drain groove.

12. The electric water heating system as claimed in any one of claims 2 to 7, wherein the tray body comprises a lower tray and an upper tray, the lower tray is provided with the drain hole, the upper tray cover is arranged on the lower tray and is enclosed with the lower tray to form the waste water collecting cavity, and the lower tray or the lower tray is provided with the waste water collecting hole;