CN221005498U - Heat exchange system and water heater - Google Patents

Heat exchange system and water heater Download PDF

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Publication number
CN221005498U
CN221005498U CN202322495541.3U CN202322495541U CN221005498U CN 221005498 U CN221005498 U CN 221005498U CN 202322495541 U CN202322495541 U CN 202322495541U CN 221005498 U CN221005498 U CN 221005498U
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CN
China
Prior art keywords
pipe
water
water inlet
water outlet
heat exchange
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CN202322495541.3U
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Chinese (zh)
Inventor
李丕田
李龙
辛森森
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Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
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Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
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Abstract

The utility model discloses a heat exchange system and a water heater, wherein the heat exchange system comprises: the heat exchanger is provided with a water inlet and a water outlet; the small flow valve comprises a valve body and a control part, wherein the valve body comprises a water inlet pipe communicated with the water inlet, a water outlet pipe communicated with the water outlet, and a bypass pipe for communicating the water inlet pipe with the water outlet pipe, the control part is arranged on the bypass pipe, and the control part is used for controlling the water flow of the bypass pipe; the water inlet, the water outlet, the water inlet pipe, the water outlet pipe and the bypass pipe are all positioned on the same side of the heat exchanger. The technical scheme of the utility model can improve the water path arrangement compactness of the heat exchange system, reduce the occupied space, be beneficial to realizing the miniaturization of the water heater, and realize the bypass flow adjustment at the same time, thereby realizing the active control of the bath water temperature of a user so as to meet different application scenes.

Description

Heat exchange system and water heater
Technical Field
The utility model relates to the technical field of hot water equipment, in particular to a heat exchange system and a water heater.
Background
In the related art, in the heat exchange system of the water heater, the water inlet and the water outlet of the heat exchanger are respectively arranged at two opposite sides of the heat exchanger, the water inlet pipe and the water outlet pipe are required to be respectively and independently connected at two opposite sides of the heat exchanger, a longer bypass pipe is also required to be connected between the water inlet pipe and the water outlet pipe for realizing the bypass water mixing function, the pipeline arrangement is not compact enough, the occupied space of the whole heat exchange system in the shell of the water heater is larger, the whole volume of the water heater is larger, the heat exchange system cannot carry out bypass flow adjustment according to actual needs, and active control of the bath water temperature of a user cannot be realized so as to meet different application scenes.
Disclosure of utility model
The utility model mainly aims to provide a heat exchange system, which aims to improve the water path arrangement compactness of the heat exchange system, reduce the occupied space, be favorable for realizing the miniaturization of the water heater, and simultaneously realize the bypass flow regulation so as to realize the active control of the bath water temperature of a user to meet different application scenes.
In order to achieve the above object, the present utility model provides a heat exchange system for being disposed in a housing of a water heater, the heat exchange system comprising:
The heat exchanger is provided with a water inlet and a water outlet; and
The small flow valve comprises a valve body and a control part, wherein the valve body comprises a water inlet pipe communicated with the water inlet, a water outlet pipe communicated with the water outlet, and a bypass pipe for communicating the water inlet pipe with the water outlet pipe, the control part is arranged on the bypass pipe, and the control part is used for controlling the water flow of the bypass pipe;
The water inlet, the water outlet, the water inlet pipe, the water outlet pipe and the bypass pipe are all positioned on the same side of the heat exchanger.
In one embodiment, the control component is located in an area defined by the inlet pipe, the bypass pipe and the outlet pipe.
In one embodiment, the center line of the control part is parallel to the axis of the water inlet pipe and the axis of the water outlet pipe, and is perpendicular to the windward side of the heat exchanger.
In one embodiment, the distance between the center line of the control part and the axis of the water inlet pipe is L1, and the distance between the center line of the control part and the axis of the water outlet pipe is L2, wherein L1 is smaller than L2.
In one embodiment, the heat exchanger comprises a heat exchanger main body, a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is connected with the heat exchanger main body, the other end of the first connecting pipe is in plug-in fit with the water inlet pipe, one end of the second connecting pipe is connected with the heat exchanger main body, the other end of the second connecting pipe is in plug-in fit with the water outlet pipe, the same side of the heat exchanger main body is provided with the water inlet and the water outlet, the water inlet pipe is communicated with the water inlet through the first connecting pipe, and the water outlet pipe is communicated with the water outlet through the second connecting pipe.
In one embodiment, the first connecting pipe and the second connecting pipe are bent downwards and extend relative to the heat exchanger main body, and the small flow valve is connected to the bottom ends of the first connecting pipe and the second connecting pipe.
In one embodiment, a containing space for containing the combustion module is formed below the heat exchanger main body, and the small flow valve is arranged side by side with the combustion module in the containing space; or the small flow valve and the combustion module in the accommodating space are staggered in the up-down direction.
In one embodiment, the water inlet pipe comprises a water inlet pipe body and water inlet pipe connectors respectively arranged at two ends of the water inlet pipe body, and the inner diameter size of the water inlet pipe connector is larger than that of the water inlet pipe body; the water outlet pipe comprises a water outlet pipe body and water outlet pipe connectors respectively arranged at two ends of the water outlet pipe body, and the inner diameter size of the water outlet pipe connector is larger than that of the water outlet pipe body; two ends of the bypass pipe are respectively connected and communicated with the water inlet pipe body and the water outlet pipe body; the first connecting pipe is detachably inserted into one of the water inlet pipe joints, and the second connecting pipe is detachably inserted into one of the water outlet pipe joints.
In one embodiment, the valve body is provided with a connecting part, and the connecting part is used for being fixedly connected with a back plate of the water heater.
In one embodiment, the valve body and the connecting part are integrally formed, and the connecting part is fixedly connected with the back plate through a connecting piece;
And/or the valve body and the connecting part are plastic parts.
In one embodiment, the small flow valve further comprises a flow sensor arranged on the water inlet pipe, and the flow sensor is used for detecting the water inlet flow of the water inlet pipe; and/or the small flow valve further comprises a temperature sensor arranged on the water inlet pipe, and the temperature sensor is used for detecting the water inlet temperature of the water inlet pipe.
The utility model also proposes a water heater comprising:
a housing; and
The heat exchange system is arranged in the shell, and the small flow valve is positioned at one side of the heat exchanger in the width direction of the shell.
According to the technical scheme, the water inlet and the water outlet of the heat exchanger, the water inlet pipe, the water outlet pipe and the bypass pipe of the small flow valve are arranged on the same side of the heat exchanger, so that the space on the same side of the heat exchanger is fully utilized, the compactness of the water way arrangement of the heat exchange system is improved, the occupied space of the heat exchange system is reduced, and when the heat exchange system is applied to the water heater, the size of the water heater is reduced, and the size miniaturization of the water heater is realized. In addition, the control part for controlling the water flow of the bypass flow passage is further arranged on the small flow valve, when the small flow valve is applied to the water heater, the control part of the small flow valve can be electrically connected with the control system of the water heater, the control system sends out corresponding control instructions to the control part according to the working state of the water heater, and then the water flow of the bypass flow passage can be controlled through the control part, so that the bypass water mixing amount of the water heater can be regulated according to the actual working condition, and further active control of the bath water temperature of a user is realized so as to meet different application scenes.
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 diagram of a heat exchange system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a small flow valve of the heat exchange system of FIG. 1;
FIG. 3 is a front view of the small flow valve of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the small-sized flow valve of FIG. 2;
FIG. 5 is a schematic diagram of a water heater according to an embodiment of the present utility model.
Reference numerals illustrate:
Reference numerals Name of the name Reference numerals Name of the name
1000 Water heater 201a First water inlet port
100 Heat exchange system 201b First water outlet port
10 Heat exchanger 202 Water outlet flow channel
101 Water inlet 202a Second water inlet port
102 Water outlet 202b Second water outlet port
103 Spacing region 203 Bypass flow passage
104 Accommodating space 211 Water inlet pipe
11 Heat exchanger main body 211a Water inlet pipe body
111 End plate 211b Water inlet pipe joint
1111 Communication part 212 Water outlet pipe
112 Heat exchange assembly 212a Water outlet pipe body
12 First connecting pipe 212b Water outlet pipe joint
13 Second connecting pipe 213 Bypass pipe
20 Small-sized flow valve 22 Control part
21 Valve body 200 Combustion module
201 Water inlet flow channel 300 Blower fan
400 Cold water input pipe 500 Hot water output pipe
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, 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, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. 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 present utility model proposes a heat exchange system 100 for being disposed within a housing of a water heater 1000.
Referring to fig. 1, in an embodiment of the utility model, the heat exchange system 100 includes a heat exchanger 10 and a small flow valve 20. The heat exchanger 10 has a water inlet 101 and a water outlet 102; the small-sized flow valve 20 comprises a valve body 21 and a control part 22, wherein the valve body 21 comprises a water inlet pipe 211 communicated with the water inlet 101, a water outlet pipe 212 communicated with the water outlet 102 and a bypass pipe 213 for communicating the water inlet pipe 211 with the water outlet pipe 212, the control part 22 is arranged on the bypass pipe 213, and the control part 22 is used for controlling the water flow rate of the bypass pipe 213; the water inlet 101, the water outlet 102, the water inlet pipe 211, the water outlet pipe 212 and the bypass pipe 213 are all located on the same side of the heat exchanger 10.
In the present embodiment, the water inlet 101 and the water outlet 102 of the heat exchanger 10 are located on the same side, and the small flow valve 20 is located on the side of the heat exchanger 10 where the water inlet 101 and the water outlet 102 are located. According to the trend arrangement of the heat exchange channels in the heat exchanger 10, the water inlet 101 and the water outlet 102 can be arranged on the same side of the heat exchanger 10 in the length direction (such as the left-right direction); or the water inlet 101 and the water outlet 102 may be provided on the same side in the width direction (e.g., front-rear direction) of the heat exchanger 10; or the water inlet 101 and the water outlet 102 may be provided on the same side in the height direction (e.g., up-down direction) of the heat exchanger 10. By arranging the water inlet 101 and the water outlet 102 on the same side of the heat exchanger 10, the arrangement positions of the water inlet 101 and the water outlet 102 are more concentrated, so that the small-sized flow valve 20 is connected with the water inlet 101 and the water outlet 102 at the same time.
Referring to fig. 1 to 4, the inlet pipe 211, the outlet pipe 212 and the bypass pipe 213 of the small-sized flow valve 20 are connected with each other to form an H-shaped valve body 21, which has a simple structure and is convenient for manufacturing, and the valve body 21 has a regular overall structure and is suitable for connecting with the pipeline of the heat exchanger 10. The water inlet pipe 211 internally forms a water inlet flow channel 201, the water outlet pipe 212 internally forms a water outlet flow channel 202, the bypass pipe 213 internally forms a bypass flow channel 203, two ends of the water inlet pipe 211 are respectively provided with a first water inlet port 201a and a first water outlet port 201b which are communicated with the water inlet flow channel 201, two ends of the water outlet pipe 212 are respectively provided with a second water inlet port 202a and a second water outlet port 202b which are communicated with the water outlet flow channel 202, the first water outlet port 201b is communicated with the water inlet 101, and the second water inlet port 202a is communicated with the water outlet 102. The control member 22 is provided on the peripheral wall of the bypass pipe 213 so as to control the bypass flow path 203. In this way, when the heat exchange system 100 works, cold water is conveyed into the heat exchanger 10 for heat exchange through the water inlet channel 201 and the water inlet 101, hot water in the heat exchanger 10 is output to the water outlet channel 202 through the water outlet 102, and meanwhile, cold water in the water inlet channel 201 can also be conveyed to the water outlet channel 202 through the bypass channel 203, so that the bypass water mixing function is realized. The flow rate of the water flowing through the bypass flow path 203 can be controlled by the control unit 22. It should be noted that, the control unit 22 controls the water flow rate of the bypass flow channel 203, and it should be understood that the control unit 22 controls the water flow rate passing through the bypass flow channel 203 to generate a certain change, where the water flow rate change may be a change between no flow rate and a flow rate, or a change between a large flow rate and a small flow rate in the case of a flow rate. Wherein the control component 22 includes, but is not limited to, employing solenoid valves, proportional valves, and the like.
According to the technical scheme, the water inlet 101 and the water outlet 102 of the heat exchanger 10, the water inlet pipe 211, the water outlet pipe 212 and the bypass pipe 213 of the small flow valve 20 are arranged on the same side of the heat exchanger 10, so that the space on the same side of the heat exchanger 10 is fully utilized, the compactness of the water path arrangement of the heat exchange system 100 is improved, the occupied space of the heat exchange system 100 is reduced, and when the heat exchange system 100 is applied to the water heater 1000, the volume of the water heater 1000 is reduced, and the volume of the water heater 1000 is miniaturized. In addition, the small flow valve 20 is further provided with a control component 22 for controlling the water flow rate of the bypass flow channel 203, when the small flow valve 20 is applied to the water heater 1000, the control component 22 of the small flow valve 20 can be electrically connected with a control system of the water heater 1000, the control system sends out corresponding control instructions to the control component 22 according to the working state of the water heater 1000, and then the water flow rate of the bypass flow channel 203 can be controlled through the control component 22, so that the bypass water mixing amount of the water heater 1000 can be adjusted according to the actual working conditions, and different application scenarios can be met. The specific application scenario will be described below in relation to the water heater 1000 section, and will not be described in detail here.
Further, the control part 22 is located in a region defined by the inlet pipe 211, the bypass pipe 213, and the outlet pipe 212. Specifically, the two ends of the bypass pipe 213 are respectively connected to the middle part of the water inlet pipe 211 and the middle part of the water outlet pipe 212, so that the valve body 21 of the small-sized flow valve 20 presents an H-valve structure, the control part 22 is arranged on the peripheral wall of the bypass pipe 213, and the control part 22 is arranged between the water inlet pipe 211 and the water outlet pipe 212, thus, the control part 22 can be accommodated in a cavity area constructed by the small-sized flow valve 20, so that the compactness of the whole structure is further improved, and the occupied space is reduced. Optionally, the control member 22 is provided at a side of the bypass pipe 213 facing the heat exchanger 10.
As shown in fig. 1 and 3, in one embodiment, the center line of the control member 22 is parallel to the axis of the inlet pipe 211 and the axis of the outlet pipe 212, and perpendicular to the windward side of the heat exchanger 10.
In the present embodiment, the windward side of the heat exchanger 10 specifically refers to the side of the heat exchanger 10 opposite to the combustion module 200. The central line of the control part 22 is parallel to the axis of the water inlet pipe 211 and the axis of the water outlet pipe 212, so that the extending directions of the water inlet pipe 211, the water outlet pipe 212 and the control part 22 are consistent, the structural layout of the whole small flow valve 20 is more regular, and the extending direction of the control part 22 is perpendicular to the windward side of the heat exchanger 10, so that the arrangement of the small flow valve 20 and the heat exchanger 10 is more regular, and the occupied space is reduced.
Further, as shown in fig. 3, the distance between the center line of the control member 22 and the axis of the water inlet pipe 211 is L1, and the distance between the center line of the control member 22 and the axis of the water outlet pipe 212 is L2, wherein L1 is smaller than L2. In this way, the distance between the control member 22 and the inlet pipe 211 is made smaller, and the distance between it and the outlet pipe 212 is made longer. When the water heater 1000 is applied, the water inlet pipe 211 is a cold water pipe for conveying cold water, the water outlet pipe 212 is a hot water pipe for conveying hot water, so that the control part 22 can be arranged far away from the hot water pipe (namely, the water outlet pipe 212), the damage to the control part 22 caused by the heat radiated by the hot water pipe is avoided, and meanwhile, the control part 22 is arranged closer to the cold water pipe (namely, the water inlet pipe 211), so that the heat dissipation of the control part 22 is facilitated, and the service life of the control part 22 is prolonged.
Optionally, the distance between the axis of the inlet pipe 211 and the axis of the outlet pipe 212 is L3, wherein L3 is less than 100mm. In this way, the influence of the length and the fitting deformation of the bypass pipe 213 on the bypass ratio and the bypass response speed can be reduced. Specifically, the distance between the water inlet pipe 211 and the water outlet pipe 212 is shorter, so that the length of the bypass pipe 213 is shortened, and the length of the bypass flow channel 203 is further shortened, so that cold water in the water inlet flow channel 201 can be quickly conveyed into the water outlet flow channel 202 through the shorter bypass flow channel 203 to be mixed with hot water in the water outlet flow channel 202, and accordingly a quicker bypass response speed and a more accurate bypass ratio can be ensured. And the length of the bypass pipe 213 is shortened, so that the structural stability of the whole valve body 21 is improved, and adverse effects on the bypass ratio and the bypass response speed caused by deformation of the bypass pipe 213 after long-time use are avoided. Wherein L3 can be designed to be 90mm, 80mm, 70mm and the like according to requirements.
In one embodiment, the heat exchanger 10 includes a heat exchanger main body 11, a first connecting pipe 12 and a second connecting pipe 13, one end of the first connecting pipe 12 is connected with the heat exchanger main body 11, the other end is in plug-in fit with the water inlet pipe 211, one end of the second connecting pipe 13 is connected with the heat exchanger main body 11, the other end is in plug-in fit with the water outlet pipe 212, the same side of the heat exchanger main body 11 is provided with the water inlet 101 and the water outlet 102, the water inlet pipe 211 is communicated with the water inlet 101 via the first connecting pipe 12, and the water outlet pipe 212 is communicated with the water outlet 102 via the second connecting pipe 13.
In the present embodiment, the small-sized flow valve 20 is connected with the heat exchanger body 11 through the first connection pipe 12 and the second connection pipe 13, and the first connection pipe 12 and the second connection pipe 13 include, but are not limited to, straight pipes, bent pipes, or a combination of straight pipes and bent pipes. The lengths of the first connecting pipe 12 and the second connecting pipe 13 can be designed according to actual needs, so that the small-sized flow valve 20 can be arranged at a position far away from the heat exchanger main body 11 as far as possible, damage to the valve body 21 and the control part 22 of the small-sized flow valve 20 caused by heat radiated by the heat exchanger main body 11 can be avoided, and the service life of the small-sized flow valve 20 can be prolonged. And the first connecting pipe 12 is matched with the water inlet pipe 211 in a plugging manner, the second connecting pipe 13 is assembled with the water outlet pipe 212 in a plugging manner, the assembly structure is simple, and the assembly efficiency can be improved.
Optionally, as shown in fig. 1, a spacing area 103 is formed between the first connecting pipe 12 and the second connecting pipe 13, and the control part 22 is disposed on a side of the bypass pipe 213 facing the spacing area 103, so as to further improve compactness of the overall structure and reduce occupied space.
In order to avoid damage to the small flow valve 20 by heat radiated from the heat exchanger body 11, in one embodiment, the distance between the small flow valve 20 and the heat exchanger body 11 is not less than 60mm. In this way, a sufficient distance can be ensured between the small flow valve 20 and the heat exchanger main body 11, the valve body 21 and the control part 22 of the small flow valve 20 are prevented from being damaged by heat radiation of the heat exchanger main body 11 for a long time, and the service life of the small flow valve 20 can be prolonged. For example, the distance between the small flow valve 20 and the heat exchanger body 11 may be 60mm, 70mm, 80mm, 90mm, 100mm, etc.
As shown in fig. 1, in one embodiment, the first connecting pipe 12 and the second connecting pipe 13 are bent downward and extended with respect to the heat exchanger main body 11, and the small flow valve 20 is connected to bottom ends of the first connecting pipe 12 and the second connecting pipe 13.
In this embodiment, the first connecting pipe 12 and the second connecting pipe 13 extend downward from the same side of the heat exchanger main body 11 (i.e. the side of the heat exchanger main body 11 provided with the water inlet 101 and the water outlet 102), and the axis of the first connecting pipe 12 is substantially parallel to the axis of the second connecting pipe 13, so that the arrangement of the first connecting pipe 12 and the second connecting pipe 13 is more regular, which is beneficial to saving the occupied space. The valve body 21 of the small-sized flow valve 20 is connected to the bottom ends of the first connecting pipe 12 and the second connecting pipe 13, so that the first connecting pipe 12, the second connecting pipe 13 and the small-sized flow valve 20 are all located on the same side of the heat exchanger main body 11, which is beneficial to fully utilizing the same side space of the heat exchange system 100, so as to further reduce the volume when applied to the water heater 1000. And the small-sized flow valve 20 is positioned below the side of the heat exchanger main body 11 provided with the water inlet 101 and the water outlet 102, so that the small-sized flow valve 20 is far away from the heat exchanger main body 11, damage to the valve body 21 and the control part 22 of the small-sized flow valve 20 caused by heat radiated by the heat exchanger main body 11 can be avoided, and the service life of the small-sized flow valve 20 can be prolonged.
Referring to fig. 1, in one embodiment, a receiving space 104 for receiving a combustion module 200 is formed below the heat exchanger body 11, and the small-sized flow valve 20 is arranged side by side with the combustion module 200 in the receiving space 104; or the small flow valve 20 and the combustion module 200 in the accommodating space 104 are staggered in the up-down direction.
In this embodiment, the heat exchanger 10 includes a heat exchanger main body 11 extending transversely, and a first connecting pipe 12 and a second connecting pipe 13 extending downward from the same side of the heat exchanger main body 11, and the small flow valve 20 is connected to bottom ends of the first connecting pipe 12 and the second connecting pipe 13, so that the heat exchange system 100 overall presents an inverted "L" -shaped structure, and the heat exchanger 10 and the small flow valve 20 enclose a semi-open accommodating space 104, and the accommodating space 104 can be used for accommodating the combustion module 200 of the water heater 1000. When the heat exchange system 100 is applied to the water heater 1000, the combustion module 200 is accommodated in the accommodating space 104, so that the cooperation between the combustion module 200 and the heat exchange system 100 is more compact, the space is fully utilized, the whole volume of the water heater 1000 is reduced, and meanwhile, high-temperature flue gas generated by the combustion module 200 flows upwards and can be fully contacted with the heat exchanger main body 11 above to exchange heat, so that the heating efficiency is improved. Alternatively, the small flow valve 20 and the combustion module 200 are staggered in the up-down direction, so that the small flow valve 20 is far away from the heat radiation area of the combustion module 200 as far as possible, and damage to the valve body 21 and the control part 22 of the small flow valve 20 caused by heat radiated by the heat exchanger main body 11 can be avoided, which is beneficial to prolonging the service life of the small flow valve 20.
In order to facilitate the assembly and disassembly of the first connection pipe 12 and the second connection pipe 13 with the water inlet pipe 211 and the water outlet pipe 212, respectively, referring to fig. 1 and 2, in one embodiment, the water inlet pipe 211 includes a water inlet pipe body 211a, and water inlet pipe joints 211b respectively provided at both ends of the water inlet pipe body 211a, wherein an inner diameter dimension of the water inlet pipe joints 211b is larger than an inner diameter dimension of the water inlet pipe body 211 a; the water outlet pipe 212 comprises a water outlet pipe body 212a and water outlet pipe connectors 212b respectively arranged at two ends of the water outlet pipe body 212a, wherein the inner diameter size of the water outlet pipe connectors 212b is larger than that of the water outlet pipe body 212 a; two ends of the bypass pipe 213 are respectively connected and communicated with the water inlet pipe body 211a and the water outlet pipe body 212 a; the first connecting pipe 12 is detachably inserted into one of the water inlet pipe joints 211b, and the second connecting pipe 13 is detachably inserted into one of the water outlet pipe joints 212 b. Alternatively, the water inlet pipe joint 211b is provided with a jack for inserting a plug pin, and after the first connecting pipe 12 and the water inlet pipe joint 211b are inserted in place, the plug pin is inserted into the jack to lock and fix the first connecting pipe 12 and the water inlet pipe joint 211 b. Optionally, the outlet pipe joint 212b is provided with a jack for inserting a plug pin, and after the second connecting pipe 13 and the outlet pipe joint 212b are inserted in place, the plug pin is inserted into the jack to lock and fix the second connecting pipe 13 and the outlet pipe joint 212 b.
As shown in fig. 1, in one embodiment, the heat exchanger main body 11 includes two end plates 111 opposite to each other in the first direction and spaced apart, and a heat exchange assembly 112 disposed between the two end plates 111, the heat exchange assembly 112 includes a plurality of heat exchange tubes disposed side by side in the second direction, the two end plates 111 are respectively provided with a communicating portion 1111 corresponding to each of the heat exchange tubes, the plurality of heat exchange tubes are communicated through the plurality of communicating portions 1111 to form a heat exchange channel with a roundabout bend, the water inlet 101 and the water outlet 102 are both disposed on one of the end plates 111, and the heat exchange channel is communicated with the water inlet 101 and the water outlet 102; wherein the first direction intersects the second direction.
In the present embodiment, the first direction may specifically be a longitudinal direction (e.g., a left-right direction) of the heat exchanger body 11, and the second direction may specifically be a width direction (e.g., a front-rear direction) of the heat exchanger body 11. The two end plates 111 cooperate together to support the heat exchange assembly 112, and the communicating portions 1111 on the two end plates 111 also function as water boxes to connect a plurality of independent heat exchange tubes in series to form a tortuous heat exchange channel; therefore, the bent pipe structure is not required to be arranged on the outer sides of the two end plates 111 to connect the two adjacent heat exchange pipes, so that the assembly process can be simplified, and the production efficiency can be improved. Specifically, each end plate 111 includes a first plate body and a second plate body that cooperate with each other, wherein the first plate body is located on a side of the second plate body facing the heat exchange assembly 112. The second plate body is equipped with the convex closure towards keeping away from the camber of first plate body one side, and the convex closure encloses with first plate body and closes and form intercommunication portion 1111, and the inside cavity that is of intercommunication portion 1111 sets up, and first plate body is equipped with the perforation that supplies the tip of heat exchange tube to insert in the cavity of intercommunication portion 1111. The first plate body and the second plate body are fixed in a welding mode, a screw connection mode and the like. Optionally, the periphery of the first plate body is provided with a flanging, the periphery of the second plate body is provided with a flanging opposite to the flanging of the first plate body, and the flanging is in butt fit with the flanging so as to improve the assembly reliability of the first plate body and the second plate body.
The plurality of heat exchange tubes are arranged in a single heat exchange tube group along the width direction (e.g., the front-rear direction) of the heat exchanger main body 11, and the single heat exchange tube group is perpendicular to the flow direction of the flue gas, so that the high-temperature flue gas generated by the combustion module 200 flows from bottom to top to be fully contacted with the single heat exchange tube group for heat exchange, thereby improving the heat exchange efficiency. Optionally, the heat exchange assembly 112 further includes a fin group arranged between the two end plates 111, and each heat exchange tube is arranged in the fin group in a penetrating manner, so that the heat exchange area can be further increased by arranging the fin group, and the heat exchange efficiency is improved.
In one embodiment, the valve body 21 is provided with a connection portion, and the connection portion is used for being fixedly connected with a back plate of the water heater 1000. Specifically, after the water heater 1000 is installed on a wall, the back plate of the shell of the water heater 1000 is close to the wall, and the valve body 21 is fixedly connected with the back plate through the connecting part, so that the installation of the small flow valve 20 is more stable and reliable, the shaking of the small flow valve 20 in the working process of the water heater 1000 is avoided, and the working reliability of the small flow valve 20 is ensured.
Further, the valve body 21 and the connecting portion are integrally formed, and the connecting portion is fixedly connected with the back plate through a connecting piece. Wherein, valve body 21 and connecting portion integrated into one piece set up for the structural strength of connecting portion is higher, and the manufacturing of being convenient for. The connecting part is connected and fixed with the backboard through connecting pieces (such as screws, bolts and the like), the assembly is simple and convenient, and the connection is stable and reliable. Optionally, the valve body 21 and the connecting portion are plastic parts, so that the valve body 21 and the connecting portion can be integrally injection molded, and the manufacturing process is simple.
On the basis of the above embodiments, in one of the embodiments, the small-sized flow valve 20 further includes a flow sensor provided at the water inlet pipe 211, the flow sensor being used for detecting the water inlet flow rate of the water inlet pipe 211; and/or, the small-sized flow valve 20 further includes a temperature sensor provided at the water inlet pipe 211, for detecting a water inlet temperature of the water inlet pipe 211.
In this embodiment, the water inlet pipe 211 of the small-sized flow valve 20 can be used as a mounting carrier for a flow sensor and/or a temperature sensor, so that the small-sized flow valve 20 has higher integration level and more diversified functions, and no flow sensor and/or temperature sensor need to be additionally mounted on the cold water input pipe 400 of the water heater 1000, which is beneficial to reducing the number of component assemblies, improving the assembly efficiency, reducing the cost, and reducing the risk of water leakage caused by component assembly. When the heat exchange system 100 is applied to the water heater 1000, the installation position of the small flow valve 20 can be closer to the water inlet end of the cold water input pipe 400 of the water heater 1000 (i.e. the installation position of the original flow sensor and/or temperature sensor is replaced), so that the small flow valve 20 is far away from the heat radiation area formed by the combustion module 200, damage of electronic elements integrated on the small flow valve 20 due to heat radiation is avoided, and the service life of the small flow valve 20 can be prolonged.
The present utility model also proposes a water heater 1000, where the water heater 1000 includes a heat exchange system 100, and the specific structure of the heat exchange system 100 refers to the above embodiment, and since the water heater 1000 adopts all the technical solutions of all the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.
As shown in fig. 1 and 5, in one embodiment, the water heater 1000 includes a heat exchange system 100, a combustion module 200, a fan 300, a cold water input pipe 400, and a hot water output pipe 500. The heat exchange system 100 includes a heat exchanger 10 and a small flow valve 20 connected to the heat exchanger 10, the combustion module 200 is disposed below the heat exchanger 10, the fan 300 is disposed below the combustion module 200, the cold water input pipe 400 is connected to the water inlet end of the water inlet pipe 211 of the small flow valve 20, and the hot water output pipe 500 is connected to the water outlet end of the water outlet pipe 212 of the small flow valve 20. The control part 22 of the small flow valve 20 can be electrically connected with a control system of the water heater 1000 in a wired or wireless mode, the control system sends out corresponding control instructions to the control part 22 according to the working state of the water heater 1000, and then the water flow of the bypass flow channel 203 can be controlled through the control part 22, so that the bypass water mixing quantity of the water heater 1000 can be regulated according to actual working conditions, different application scenes can be met, and the problems of constant temperature difference, high vaporization noise, low thermal efficiency and the like existing in the traditional water heater 1000 can be effectively improved.
For example, when the water heater 1000 is operating normally, the control part 22 controls to close the bypass flow channel 203, and at this time, the highest temperature in the heat exchange tube of the heat exchanger 10 is the set temperature of the water heater 1000, so that the risk of gasification noise can be greatly reduced, the thermal efficiency of the heat exchanger 10 is not affected, and the service life of the heat exchanger 10 can be prolonged.
After the water heater 1000 is shut down, the control part 22 controls the bypass flow channel 203 to be opened, and the bypass flow channel 203 can be closed within a few seconds after being started according to actual working conditions. At this time, part of cold water in the water inlet flow channel 201 is conveyed into the water outlet flow channel 202 through the bypass flow channel 203, and the cold water is mixed with the high temperature water in the water outlet flow channel 202, so that the water cut-off temperature rise can be effectively reduced; since part of the cold water is branched from the bypass flow passage 203, the water flow rate of the water fed from the water inlet flow passage 201 toward the heat exchanger 10 is reduced, so that the start-up overshoot can be reduced.
In addition, whether the bypass is opened in normal combustion can be judged according to the actual working condition, for example: when the temperature difference of water entering and exiting in winter is large and the water needs to be heated to the set temperature rapidly, the control part 22 controls the bypass flow channel 203 to be closed, so that the heating speed is increased, the heating to the set temperature is ensured, and the bypass time can be reduced when water is stopped and restarted, thereby reducing the undershoot; when the low-temperature bath is needed in summer, the control part 22 controls the bypass flow channel 203 to be opened, so that the lowest temperature rise of the water heater 1000 can be reduced, the water temperature is prevented from being excessively hot during bath, the water temperature in the heat exchange tube can be increased, the flue gas temperature is increased, and the risk of condensed water is avoided.
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 (12)

1. A heat exchange system for placement within a housing of a water heater, the heat exchange system comprising:
The heat exchanger is provided with a water inlet and a water outlet; and
The small flow valve comprises a valve body and a control part, wherein the valve body comprises a water inlet pipe communicated with the water inlet, a water outlet pipe communicated with the water outlet, and a bypass pipe for communicating the water inlet pipe with the water outlet pipe, the control part is arranged on the bypass pipe, and the control part is used for controlling the water flow of the bypass pipe;
The water inlet, the water outlet, the water inlet pipe, the water outlet pipe and the bypass pipe are all positioned on the same side of the heat exchanger.
2. The heat exchange system of claim 1 wherein the control component is located in an area defined by the inlet pipe, the bypass pipe, and the outlet pipe.
3. The heat exchange system of claim 2, wherein a centerline of the control member is parallel to an axis of the inlet pipe and an axis of the outlet pipe and perpendicular to a windward side of the heat exchanger.
4. A heat exchange system according to claim 3, wherein the distance between the centre line of the control member and the axis of the inlet pipe is L1 and the distance between the centre line of the control member and the axis of the outlet pipe is L2, wherein L1 is less than L2.
5. The heat exchange system according to claim 1, wherein the heat exchanger includes a heat exchanger main body, a first connection pipe, and a second connection pipe, one end of the first connection pipe is connected to the heat exchanger main body, the other end is in plug-fit with the water inlet pipe, one end of the second connection pipe is connected to the heat exchanger main body, the other end is in plug-fit with the water outlet pipe, the same side of the heat exchanger main body is provided with the water inlet and the water outlet, the water inlet pipe is communicated with the water inlet via the first connection pipe, and the water outlet pipe is communicated with the water outlet via the second connection pipe.
6. The heat exchange system of claim 5, wherein the first connection tube and the second connection tube are each bent downward with respect to the heat exchanger body, and the small-sized flow valve is connected to bottom ends of the first connection tube and the second connection tube.
7. The heat exchange system as set forth in claim 6, wherein a receiving space for receiving a combustion module is formed under the heat exchanger body, and the small-sized flow valve is disposed side by side with the combustion module in the receiving space; or the small flow valve and the combustion module in the accommodating space are staggered in the up-down direction.
8. The heat exchange system as set forth in claim 5, wherein the water inlet pipe comprises a water inlet pipe body, and water inlet pipe joints respectively provided at both ends of the water inlet pipe body, an inner diameter dimension of the water inlet pipe joint being larger than an inner diameter dimension of the water inlet pipe body; the water outlet pipe comprises a water outlet pipe body and water outlet pipe connectors respectively arranged at two ends of the water outlet pipe body, and the inner diameter size of the water outlet pipe connector is larger than that of the water outlet pipe body; two ends of the bypass pipe are respectively connected and communicated with the water inlet pipe body and the water outlet pipe body; the first connecting pipe is detachably inserted into one of the water inlet pipe joints, and the second connecting pipe is detachably inserted into one of the water outlet pipe joints.
9. The heat exchange system of claim 1, wherein the valve body is provided with a connection portion for connection and securement with a back plate of the water heater.
10. The heat exchange system of claim 9, wherein the valve body is integrally formed with the connection portion, the connection portion being fixedly connected to the back plate by a connection member;
And/or the valve body and the connecting part are plastic parts.
11. The heat exchange system according to any one of claims 1 to 10, wherein the small-sized flow valve further comprises a flow sensor provided to the water inlet pipe, the flow sensor being adapted to detect a flow rate of water into the water inlet pipe;
And/or the small flow valve further comprises a temperature sensor arranged on the water inlet pipe, and the temperature sensor is used for detecting the water inlet temperature of the water inlet pipe.
12. A water heater, comprising:
a housing; and
A heat exchange system as claimed in any one of claims 1 to 11, provided in the housing, the small flow valve being located on a side of the heat exchanger facing the width direction of the housing.
CN202322495541.3U 2023-09-13 2023-09-13 Heat exchange system and water heater Active CN221005498U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322495541.3U CN221005498U (en) 2023-09-13 2023-09-13 Heat exchange system and water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322495541.3U CN221005498U (en) 2023-09-13 2023-09-13 Heat exchange system and water heater

Publications (1)

Publication Number Publication Date
CN221005498U true CN221005498U (en) 2024-05-24

Family

ID=91121417

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322495541.3U Active CN221005498U (en) 2023-09-13 2023-09-13 Heat exchange system and water heater

Country Status (1)

Country Link
CN (1) CN221005498U (en)

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