Heat exchange system and water heater
By designing the first pipeline of the bent structure in the heat exchange system, forming a recessed area to accommodate control components, and providing protection through the bent structure, the problem of the flow valve control components being susceptible to collision and damage is solved, and a higher service life and a smaller footprint are achieved.
Patent Information
- Application Number
- CN202420765253.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-04-12
AI Technical Summary
In the heat exchange system, the control components of the flow valve are easily damaged by bumps, especially when applied in the shell of the water heater, which is prone to bumps with other components.
A heat exchange system is designed, wherein the first pipeline has a bent structure to form a recessed area for at least partially to accommodate the control component so that the control component does not protrude from the outside of the pipeline and provides protection to the control component through the bent structure.
Effectively prevent the control components of the flow valve from being damaged during transportation and application, extending the service life, and reducing the space occupied by the heat exchange system on the water heater shell.
Smart Images
Figure CN222925752U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchange equipment, and particularly relates to a heat exchange system and a water heater. Background Art
[0002] In the related art, a flow valve is connected between two pipelines (such as an inlet pipeline and an outlet pipeline) of some heat exchange systems to achieve the function of bypass mixing water. The control component of the flow valve usually protrudes outside the pipeline. During the turnover and transportation of the heat exchange system, the control component of the flow valve is easily damaged due to being knocked; and when the heat exchange system is applied to a water heater, the heat exchange system is arranged in the shell of the water heater, and the control component of the flow valve protruding outside the pipeline is also easily damaged due to knocking with other components in the shell. Summary of the Utility Model
[0003] The main object of the utility model is to propose a heat exchange system, aiming to provide a certain protection for the flow valve, so that the control component of the flow valve is not easily damaged due to being knocked.
[0004] To achieve the above object, the heat exchange system proposed by the utility model includes:
[0005] A heat exchanger having a first port and a second port;
[0006] A pipeline assembly including a first pipeline communicated with the first port and a second pipeline communicated with the second port; and
[0007] A flow valve including a valve body and a control component arranged on the valve body. The valve body communicates the first pipeline with the second pipeline, and the control component is used to control the water flow in the valve body; the first pipeline has a bending structure, and a concave area for at least partially accommodating the control component is formed in the bending structure.
[0008] In an embodiment, the heat exchanger includes a first end plate provided with the first port and the second port. The first end plate has a first side edge and a second side edge opposite to each other in a first direction. The bending structure is recessed from the first side edge towards the second side edge to form the concave area. The control component is arranged on one side of the valve body facing the first side edge, and the surface of the control component does not exceed the first side edge.
[0009] In an embodiment, the dimension of the control component in the first direction is smaller than the recessed depth of the concave area 201 in the first direction.
[0010] In one embodiment, the valve body includes a valve main body disposed in the first pipeline, and a bypass pipe connecting the valve main body to the second pipeline. A main flow channel communicating with the first pipeline is formed in the valve main body, and a bypass flow channel connecting the main flow channel to the second pipeline is formed in the bypass pipe. The control component is used to control the water flow rate of the bypass flow channel.
[0011] In one embodiment, the bending structure includes a first pipe section and a second pipe section connected by bending. The first pipe section is located between the first port and the second pipe section. The first pipe section extends from one end close to the first port towards the second pipeline, and the second pipe section extends downward from the end of the first pipe section far from the first port. The valve main body is connected to the second pipe section, and the control component is disposed on a side of the valve main body far from the second pipeline.
[0012] In one embodiment, the included angle between the axis of the first pipe section and the axis of the second pipe section is set to be a right angle or an obtuse angle.
[0013] In one embodiment, the bypass pipe is arranged as a straight pipe.
[0014] In one embodiment, a commutation port communicating the main flow channel with the bypass flow channel is provided in the valve main body. The control component includes a driving assembly and a sealing member drivingly connected to the driving assembly. The driving assembly is disposed on a side of the valve main body close to the concave area, the sealing member is placed in the valve main body, and the driving assembly is used to drive the sealing member to adjust the opening degree of the commutation port.
[0015] The present utility model also provides a water heater, which includes a housing and a heat exchange system disposed in the housing.
[0016] In one embodiment, the housing includes a bottom case and a face case detachably connected, and the control component is detachably connected to a side of the valve body facing the face case.
[0017] The technical solution of the present utility model bypasses and connects the first pipeline and the second pipeline through the valve body of the flow valve, and the water flow rate in the internal flow channel of the valve body can be controlled by the control component. Among them, the first pipeline has a bending structure, and a concave area for at least partial accommodation of the control component can be formed through the bending structure. In this way, the control component will not protrude too much from the outside of the pipeline, and the bending structure surrounding the outside of the control component can play a certain protective role for the control component. In this way, during the turnover and transportation of the heat exchange system, the control component of the flow valve is not easily damaged by being knocked; and when the heat exchange system is applied to a water heater, the heat exchange system is arranged in the housing of the water heater, and the control component of the flow valve is not easily damaged by knocking against other components in the housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0019] Figure 1 It is a schematic structural diagram of an embodiment of a water heater of the present utility model;
[0020] Figure 2 It is a schematic structural diagram of an embodiment of a heat exchange system of the present utility model;
[0021] Figure 3 It is Figure 2 a partial cross-sectional structural diagram of the heat exchange system in;
[0022] Figure 4 It is Figure 2 a side view of the heat exchange system in;
[0023] Figure 5 It is a schematic structural diagram of another embodiment of a heat exchange system of the present utility model;
[0024] Figure 6 It is a schematic structural diagram of an embodiment of a flow valve of a heat exchange system of the present utility model;
[0025] Figure 7 It is Figure 6 a cross-sectional structural diagram of the flow valve in.
[0026] Explanation of the reference numerals in the drawings:
[0027] 1000, Water heater; 100, Heat exchange system; 200, Housing; 210, Front shell; 220, Bottom shell; 300, Burner; 400, Fan; 500, Gas proportional valve; 600, Booster pump;
[0028] 100, Heat exchange system; 10, Heat exchanger; 101, First port; 102, Second port; 11, First end plate; 111, First side edge; 112, Second side edge; 12, Second end plate; 13, Heat exchange component; 20, Pipeline component; 21, First pipeline; 201, Concave area; 211, First pipe section; 212, Second pipe section; 22, Second pipeline; 30, Flow valve; 301, Main flow channel; 302, Bypass flow channel; 303, Commutation flow channel; 304, Commutation port; 305, First interface; 306, Second interface; 31, Valve body; 311, Valve body proper; 3111, Commutation pipe body; 3112, Limit boss; 312, Bypass pipe; 3121, Limit flange; 32, Control component; 321, Driving component; 322, Seal.
[0029] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0032] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0033] In the related art, a flow valve is connected between two pipelines (such as an inlet pipeline and an outlet pipeline) of some heat exchange systems to achieve the function of bypass mixing water. However, the control component of the flow valve usually protrudes outside the pipeline. During the turnover and transportation of the heat exchange system, the control component of the flow valve is easily knocked and damaged; and when the heat exchange system is applied to a water heater, the heat exchange system is arranged inside the housing of the water heater, and the control component of the flow valve protruding outside the pipeline is also easily knocked against other components inside the housing and damaged.
[0034] Based on this, the present utility model proposes a heat exchange system 100. By optimizing the installation structure of the flow valve 30, it can play a certain protective role for the flow valve 30, so that the control component 32 of the flow valve 30 is not easily knocked and damaged.
[0035] Please refer to Figure 2 , in an embodiment of the present utility model, the heat exchange system 100 includes a heat exchanger 10, a pipeline assembly 20, and a flow valve 30. The heat exchanger 10 has a first port 101 and a second port 102; the pipeline assembly 20 includes a first pipeline 21 communicated with the first port 101 and a second pipeline 22 communicated with the second port 102; the flow valve 30 includes a valve body 31 and a control component 32 arranged on the valve body 31. The valve body 31 communicates the first pipeline 21 with the second pipeline 22, and the control component 32 is used to control the water flow rate in the valve body 31; the first pipeline 21 has a bending structure, and a recessed area 201 for at least partially accommodating the control component 32 is formed in the bending structure.
[0036] The heat exchanger 10 is the heat exchange main body of the heat exchange system 100. Among them, the heat exchanger 10 includes, but is not limited to, a tubular heat exchanger, a plate heat exchanger, etc. As long as a heat exchange channel for fluid passage can be constructed, heat exchange is carried out between external heat and the fluid in the heat exchange channel to achieve fluid heating. Hereinafter, the heat exchanger 10 with a fin-tube structure will be mainly used as an example for illustration. Specifically, as Figure 1 shown, the heat exchanger 10 includes a first end plate 11 and a second end plate 12 that are opposite and spaced apart, and a heat exchange component 13 disposed between the first end plate 11 and the second end plate 12. The heat exchange component 13 may specifically include a plurality of heat exchange tubes and a plurality of fins sleeved around the plurality of heat exchange tubes. The plurality of heat exchange tubes can be connected to each other in series or in parallel to form a heat exchange channel. When external heat (such as the high-temperature flue gas generated by the combustion of the burner 300 of the water heater 1000 as shown in Figure 1 ) passes through the heat exchanger 10, the high-temperature flue gas passes through the gap between two adjacent fins, and the high-temperature flue gas exchanges heat with the fins, and then transfers the heat to the heat exchange tubes through the fins to heat the water in the heat exchange tubes to achieve the hot water function.
[0037] The pipeline assembly 20 is used to realize fluid transportation in the heat exchange system 100. The pipeline assembly 20 includes a first pipeline 21 and a second pipeline 22 respectively connected to the heat exchanger 10. Among them, the first pipeline 21 and the second pipeline 22 can be respectively connected to opposite sides of the heat exchanger 10, or can be connected to the same side of the heat exchanger 10. Optionally, in order to reduce the pipeline length and facilitate the miniaturization of the volume of the flow valve 30, the first pipeline 21 and the second pipeline 22 are connected to the same side of the heat exchanger 10. One of the first pipeline 21 and the second pipeline 22 can be an inlet pipeline communicating with the water inlet port of the heat exchanger 10, and the other is an outlet pipeline communicating with the water outlet port of the heat exchanger 10. For example, as shown in Figure 5 , when the first pipeline 21 is the inlet pipeline and the second pipeline 22 is the outlet pipeline, the first port 101 is the water inlet port of the heat exchanger 10, and the second port 102 is the water outlet port of the heat exchanger 10; as shown in Figure 4 , when the first pipeline 21 is the outlet pipeline and the second pipeline 22 is the inlet pipeline, the first port 101 is the water outlet port of the heat exchanger 10, and the second port 102 is the water inlet port of the heat exchanger 10.
[0038] The flow valve 30 is used in the heat exchange system 100 to realize the bypass connection between the first pipeline 21 and the second pipeline 22, and the flow valve 30 can also control the water flow rate in the internal flow channels (such as the main flow channel 301 and / or the bypass flow channel 302) of its valve body 31 through the control component 32. Among them, the control component 32 includes, but is not limited to, solenoid valves, proportional valves or other types of valves. The first pipeline 21 has a bending structure, and a recessed area 201 for at least partial accommodation of the control component 32 can be formed through the bending structure. Among them, there are various ways to form the bending structure. For example, the first pipeline 21 may include a first pipe section 211 and a second pipe section 212 connected by bending, and the first pipe section 211 and the second pipe section 212 together form the bending structure. Another example is that a partial pipe section of the first pipeline 21 can be set as a bent pipe section with a "U" shape or a "C" shape, etc., and this bent pipe section forms the bending structure.
[0039] The technical solution of the present utility model bypasses and connects the first pipeline 21 and the second pipeline 22 through the valve body 31 of the flow valve 30, and the water flow rate in the internal flow channels of the valve body 31 can be controlled through the control component 32. Among them, the first pipeline 21 has a bending structure, and a recessed area 201 for at least partial accommodation of the control component 32 can be formed through the bending structure. In this way, the control component 32 will not protrude too much outside the pipeline, and the bending structure surrounding the outside of the control component 32 can play a certain protective role for the control component 32. In this way, during the turnover and transportation process of the heat exchange system 100, the control component 32 of the flow valve 30 is not easily damaged by bumping; and when the heat exchange system 100 is applied to the water heater 1000, the heat exchange system 100 is arranged in the housing 200 of the water heater 1000, and the control component 32 of the flow valve 30 is not easily damaged by bumping with other components in the housing 200.
[0040] In addition, by accommodating the control component 32 in the recessed area 201 formed by the bending structure of the first pipeline 21 itself, it can be avoided that the control component 32 protrudes too much outside the pipeline, resulting in an increase in the occupied space of the entire heat exchange system 100. When it is applied to the water heater 1000, it can also reduce the occupied space of the heat exchange system 100 inside the housing 200 of the water heater 1000, which is beneficial to the miniaturization of the volume of the water heater 1000.
[0041] Such as Figure 4 and Figure 5As shown, in some embodiments, the heat exchanger 10 includes a first end plate 11 provided with the first port 101 and the second port 102. The first end plate 11 has a first side edge 111 and a second side edge 112 that are opposite to each other in a first direction. The bending structure is recessed from the first side edge 111 towards the second side edge 112 to form the recessed area 201. The control component 32 is provided on a side of the valve body 31 facing the first side edge 111, and the surface of the control component 32 does not extend beyond the first side edge 111.
[0042] In this embodiment, both the first port 101 and the second port 102 are provided on the first end plate 11 of the heat exchanger 10, so that both the first pipeline 21 and the second pipeline 22 are connected to the same side of the heat exchanger 10, which is beneficial to the miniaturization of the volume of the flow valve 30. The bending structure is recessed from the first side edge 111 towards the second side edge 112 to form the recessed area 201, and the control component 32 is provided on a side of the valve body 31 facing the first side edge 111. The surface of the control component 32 does not extend beyond the first side edge 111, that is, the surface of the control component 32 facing the first side edge 111 is flush with the first side edge 111, or the surface of the control component 32 facing the first side edge 111 is located on the side of the first side edge 111 close to the second side edge 112. In this way, the control component 32 will not protrude from the outermost edge of the heat exchanger 10 in the first direction, and it is not easy to be bumped and damaged during transportation and turnover.
[0043] Specifically, the first end plate 11 has a first side edge 111 and a second side edge 112 that are opposite to each other in a first direction. Among them, the first direction may specifically be the width direction of the heat exchanger 10. The first port 101 and the second port 102 of the heat exchanger 10 are arranged side by side in the first direction. The first port 101 is arranged close to the first side edge 111, and the second port 102 is arranged close to the second side edge 112. The first pipeline 21 extends downward from the first port 101, and the second pipeline 22 extends downward from the second port 102. And a partial pipe section of the first pipeline 21 is set as a bending structure, and the bending structure is recessed from the first side edge 111 towards the second side edge 112 to form the recessed area 201. In this way, it is also beneficial to reduce the distance between the first pipeline 21 and the second pipeline 22, thereby facilitating the installation of the flow valve 30 more conveniently and being beneficial to the miniaturization of the volume of the flow valve 30.
[0044] Furthermore, the dimension of the control component 32 in the first direction is smaller than the recessed depth of the recessed area 201 in the first direction. So that the control component 32 can be completely accommodated in the recessed area 201 in the first direction, thereby being able to play a better protective role for the control component 32 of the flow valve 30 and making the control component 32 less likely to be bumped and damaged.
[0045] On the basis of the above embodiments, please combineFigure 3 , Figure 6 and Figure 7 , in one embodiment, the valve body 31 includes a valve body 311 disposed in the first pipeline 21 and a bypass pipe 312 connecting the valve body 311 to the second pipeline 22. A main flow channel 301 communicating with the first pipeline 21 is formed in the valve body 311, and a bypass flow channel 302 connecting the main flow channel 301 to the second pipeline 22 is formed in the bypass pipe 312. The control component 32 is used to control the water flow rate of the bypass flow channel 302.
[0046] Among them, the valve body 31 includes a valve body 311 and a bypass pipe 312. First interfaces 305 are respectively provided on both sides of the valve body 311, and the valve body 311 can be connected in series to the middle position of the first pipeline 21 through the first interfaces 305 on both sides. Alternatively, the valve body 311 can also be connected to the end of the first pipeline 21 through only one of the first interfaces 305. It can be understood that the first pipeline 21 can be an inlet pipeline or an outlet pipeline, that is to say, the valve body 311 can be connected to both the inlet pipeline and the outlet pipeline. The bypass pipe 312 is disposed on one side of the valve body 311 and extends towards the second pipeline 22, so that the overall structure of the valve body 311 and the bypass pipe 312 constructs a similar "T"-type valve structure. One end of the bypass pipe 312 away from the valve body 311 is connected to the second pipeline 22, and the end of the bypass pipe 312 away from the valve body 311 has a second interface 306 communicating with the second pipeline 22. Specifically, a connection hole for inserting the end of the bypass pipe 312 is provided on the peripheral wall of the second pipeline 22, and the bypass pipe 312 and the second connection hole are inserted and matched and fixed by welding, threaded connection and other methods. Optionally, the bypass pipe 312 and the second pipeline 22 are welded and fixed to ensure the sealing reliability of the connection part between the bypass pipe 312 and the second pipeline 22.
[0047] Optionally, in order to facilitate the installation of the bypass pipe 312 and the second pipeline 22, a limiting flange 3121 is provided on the outer peripheral surface of one end of the bypass pipe 312 close to the second interface 306, and the limiting flange 3121 abuts against the outer peripheral wall of the second pipeline 22. Among them, the second limiting flange 3121 can be set as a plurality of convex point parts arranged along the circumferential direction of the bypass pipe 312, or the second limiting flange 3121 can be set as a convex ring extending along the circumferential direction of the bypass pipe 312. In this way, it is convenient to install the bypass pipe 312 and the second pipeline 22. When the bypass pipe 312 and the second pipeline 22 are selected to be connected by welding, the setting of the second limiting flange 3121 can make the sealing between the bypass pipe 312 and the second pipeline 22 better, and the difficulty of welding operation is lower during the welding process.
[0048] It can be understood that, for the convenience of assembly, the valve body 311 of the flow valve 30 and the bypass pipe 312 can be pre-assembled to form an integral body, or the valve body 311 and the bypass pipe 312 can also be integrally formed. In this way, during installation, only the valve body 311 needs to be connected to the first pipeline 21, and the bypass pipe 312 needs to be connected to the second pipeline 22. Of course, in some embodiments, the bypass pipe 312 can also be an independent assembly component. During installation, the valve body 311 is connected to the first pipeline 21, and then both ends of the bypass pipe 312 are respectively connected to the valve body 311 and the second pipeline 22.
[0049] Please refer to Figure 3 and Figure 7 , a main flow channel 301 communicating with the first pipeline 21 is formed in the valve body 311, and a bypass flow channel 302 connecting the main flow channel 301 and the second pipeline 22 is formed in the bypass pipe 312, so that the valve body 311, the first pipeline 21, the heat exchanger 10, the second pipeline 22, and the bypass pipe 312 can be connected to form a circulating flow path. As Figure 5 shown, when the first pipeline 21 is the water inlet pipeline and the second pipeline 22 is the water outlet pipeline, the cold water of the external water system can be transported to the first pipeline 21 through the main flow channel 301 of the valve body 311, and then transported to the heat exchange flow channel of the heat exchanger 10 for heating, and then the hot water is output through the second pipeline 22. At the same time, the cold water in the main flow channel 301 can be transported to the second pipeline 22 through the bypass flow channel 302 in the bypass pipe 312 to be mixed with the hot water in the second pipeline 22. In this way, the temperature of the hot water output by the second pipeline 22 will not be too high to meet the requirement of constant water temperature at the outlet. As Figure 4 shown, when the first pipeline 21 is the water outlet pipeline and the second pipeline 22 is the water inlet pipeline, the cold water of the external water system can be transported to the heat exchange flow channel of the heat exchanger 10 for heating through the second pipeline 22, and then transported to the main flow channel 301 of the valve body 311 through the first pipeline 21, and then the hot water is output through the main flow channel 301. At the same time, the cold water in the second pipeline 22 can be transported to the main flow channel 301 through the bypass flow channel 302 in the bypass pipe 312 to be mixed with the hot water in the main flow channel 301. In this way, the temperature of the hot water output by the main flow channel 301 will not be too high to meet the requirement of constant water temperature at the outlet.
[0050] The control component 32 can be used to control the water flow rate through the main flow channel 301 and / or the bypass flow channel 302. For example, the control component 32 can be used to control the water flow rate of the main flow channel 301, or the control component 32 is used to control the water flow rate of the bypass flow channel 302. Or, the control component 32 can be used to control the water flow rate of the main flow channel 301 and also control the water flow rate of the bypass flow channel 302. In this embodiment, an example is given where the control component 32 is used to control the water flow rate of the bypass flow channel 302. For example, the on-off of the bypass flow channel 302 can be controlled by the control component 32 to achieve the switching between having flow and no flow; it can also be that the cross-sectional area of the bypass flow channel 302 is adjusted by the control component 32 to achieve the adjustment of the flow rate. The adjustment of the flow rate usually includes, for example, achieving the switching between flow rate gears such as large flow rate, medium flow rate, small flow rate, and no flow rate. For example, when the heat exchange system 100 is applied to the water heater 1000, the control component 32 of the flow valve 30 is electrically connected to the control system of the water heater 1000. The control system issues corresponding control instructions to the control component 32 according to the working state of the water heater 1000. Then, through the control component 32, the water flow rate through the bypass flow channel 302 can be actively controlled, so that the bypass mixing water volume of the water heater 1000 can be adjusted according to the actual working conditions to meet different application scenarios, and thus the problems existing in the traditional gas water heater 1000 such as the start-stop constant temperature difference, high vaporization noise, and low thermal efficiency can be effectively improved.
[0051] In one embodiment, the control component 32 is a solenoid valve. For example, a normally closed solenoid valve can be used. Using the solenoid valve to control the on-off of the bypass flow channel 302 can enable the bypass flow channel 302 to switch between two gears of having bypass flow and no bypass flow, with simple and convenient adjustment and fast response speed. Also, for example, in another embodiment, the control component 32 can adopt a proportional valve. The proportional valve is configured with a stepper motor to achieve continuous stepless adjustment, with higher adjustment accuracy. It can not only achieve the on-off control of the bypass flow channel 302 but also achieve the adjustment of the flow rate of the bypass flow channel 302.
[0052] As Figure 4 and Figure 5 shown, in some embodiments, the bending structure includes a first pipe section 211 and a second pipe section 212 that are bent and connected. The first pipe section 211 is located between the first port 101 and the second pipe section 212. The first pipe section 211 extends from one end close to the first port 101 towards the second pipeline 22. The second pipe section 212 extends downward from the end of the first pipe section 211 away from the first port 101. The valve body 311 is connected to the second pipe section 212. The control component 32 is arranged on the side of the valve body 311 away from the second pipeline 22.
[0053] In this embodiment, by providing a bending structure, the second pipe section 212 is disposed closer to the second pipeline 22, that is, the distance between the second pipe section 212 and the second pipeline 22 is relatively small. The valve body 311 is provided on the second pipe section 212, and the bypass pipe 312 is connected between the valve body 311 and the second pipeline 22, thereby being able to reduce the length of the bypass pipe 312. This can not only make the overall size of the valve body 31 of the flow valve 30 smaller, but also shorten the length of the bypass flow channel 302, which is also beneficial to quickly achieve bypass mixing of water.
[0054] Optionally, the included angle between the axis of the first pipe section 211 and the axis of the second pipe section 212 is set to be a right angle or an obtuse angle. In this way, it can be avoided that the connecting part of the first pipe section 211 and the second pipe section 212 is bent into an acute angle and is easily broken, and at the same time, it is also beneficial to the second pipe section 212 being disposed closer to the second pipeline 22. For example, as Figure 4 shown, in one embodiment, the first pipe section 211 extends horizontally from the end close to the first port 101 towards the second pipeline 22, and the second pipe section 212 extends vertically downward from the end of the first pipe section 211 away from the first port 101, so that the axis of the first pipe section 211 is perpendicular to the axis of the second pipe section 212. Another example, as Figure 5 shown, in another embodiment, the first pipe section 211 extends obliquely downward and towards the second pipeline 22 from the end close to the first port 101, and the second pipe section 212 extends vertically downward from the end of the first pipe section 211 away from the first port 101, so that the included angle between the axis of the first pipe section 211 and the axis of the second pipe section 212 is set to be an obtuse angle. Optionally, the connecting part of the first pipe section 211 and the second pipe section 212 is connected by a bent pipe for transition, which can reduce the fluid resistance at the bending part.
[0055] The bypass pipe 312 is connected between the valve body 311 and the second pipeline 22. Among them, the bypass pipe 312 can be provided as a straight pipe or a bent pipe. Optionally, the bypass pipe 312 is provided as a straight pipe. In this way, the length of the bypass pipe 312 and the internal bypass flow channel 302 can be shortened as much as possible, and at the same time, the fluid resistance in the bypass flow channel 302 can also be reduced.
[0056] As Figure 3 and Figure 7As shown, in one embodiment, a switching port 304 that connects the main flow channel 301 and the bypass flow channel 302 is provided in the valve body 311. The control component 32 includes a driving assembly 321 and a seal 322 that is drivingly connected to the driving assembly 321. The driving assembly 321 is disposed on a side of the valve body 311 close to the recessed area 201, and the seal 322 is placed inside the valve body 311. The driving assembly 321 is configured to drive the seal 322 to adjust the opening degree of the switching port 304.
[0057] In this embodiment, the driving assembly 321 is configured to drive the seal 322 to adjust the opening degree of the switching port 304. Among them, the driving assembly 321 can drive the seal 322 to perform a linear motion or a rotational motion to adjust the opening degree of the switching port 304. The opening degree adjustment here can specifically be that the driving assembly 321 drives the seal 322 to open or close the switching port 304 to achieve two opening degree adjustments; further, when the switching port 304 is open, the driving assembly 321 can also drive the seal 322 to adjust the size of the shielding area of the switching port 304, so as to achieve multiple opening degree adjustments when the switching port 304 is open.
[0058] Hereinafter, mainly taking the driving assembly 321 for driving the seal 322 to open or close the switching port 304 as an example. Among them, there are various specific structures of the driving assembly 321. For example, the driving assembly 321 can include a valve stem, an electromagnetic element disposed around the valve stem. One end of the valve stem connected to the seal 322 faces the switching port 304, and an elastic member is provided between the other end of the valve stem and the electromagnetic element. When the electromagnetic element is energized, a magnetic attraction force is generated on the valve stem, causing the valve stem to drive the seal 322 to move away from the switching port 304 to open the switching port 304; when the electromagnetic element is de-energized, the magnetic attraction force on the valve stem disappears, and under the action of the elastic member, the valve stem drives the seal 322 to reset to close the switching port 304. Alternatively, the driving assembly 321 can also use a linear motor or a cylinder to drive the seal 322 to open or close the switching port 304.
[0059] The control component 32 and the valve body 311 can be fixed by means of detachable connections including but not limited to screw connections, snap connections, etc., or the control component 32 can also be connected and fixed to the valve body 311 by non-detachable means such as welding and bonding. For the convenience of disassembly and repair of the control component 32, optionally, the control component 32 is detachably connected to the valve body 311. For example, the valve body 311 is provided with a first connection hole for a fastener to pass through, and the control component 32 is provided with a second connection hole corresponding to the first connection hole. The control component 32 can be locked to the valve body 311 by passing a fastener (such as a screw, a bolt, etc.) through the first connection hole and the second connection hole.
[0060] To extend the service life of the flow valve 30, optionally, the first pipeline 21 is a water inlet pipeline for delivering cold water to the heat exchanger 10. In this way, the valve body 311 of the flow valve 30 is arranged on the first pipeline 21, and the control component 32 is arranged on the valve body 311, so that the installation environment temperature of the control component 32 is relatively low, which is beneficial to reducing the temperature rise. And the seal 322 of the control component 32 is located in the main flow channel 301 of the valve body 311. At this time, the cold water flows through the main flow channel 301, so that the seal 322 is in a normal temperature or low temperature environment. Therefore, the seal 322 does not need to be made of a special high-temperature-resistant sealing material. The seal 322 only needs to use a conventional sealing material to ensure the sealing performance and service life, which can reduce the cost. In addition, usually the water pressure in the water inlet pipeline is greater than that in the water outlet pipeline. When the seal 322 closes the commutation port 304, the seal 322 can be pressed tightly against the commutation port 304 under the action of the pressure difference on both sides, so as to further ensure the sealing reliability.
[0061] As Figure 7 shown, in a specific embodiment, a commutation pipe body 3111 is arranged in the valve body 311. The upper and lower sides of the valve body 311 are provided with first interfaces 305, and the side part of the valve body 311 is provided with a bypass port. A valve cavity is formed in the valve body 311. The commutation pipe body 3111 is arranged in the valve cavity. One end of the commutation pipe body 3111 is butt-connected and communicated with the bypass port. A commutation flow channel 303 communicated with the bypass flow channel 302 is formed in the commutation pipe body 3111. The end of the commutation pipe body 3111 far away from the bypass port forms a commutation port 304. In this embodiment, by arranging the commutation pipe body 3111 inside the valve body 311, the structure of the valve body 311 is more compact, which is more conducive to the miniaturization of the valve body 311. At the same time, one end of the commutation pipe body 3111 close to the bypass port can be sleeved on the outer periphery of the bypass pipe 312, so that the installation of the bypass pipe 312 and the valve body 311 is more stable and reliable.
[0062] Optionally, as Figure 7As shown, in one embodiment, in order to enable the water in the main runner 301 to flow better into the flow direction-changing runner 303, the flow direction-changing runner 303 has a first runner and a second runner. One end of the first runner is communicated with the main runner 301, and the other end of the first runner is communicated with the bypass port via the second runner. The cross-sectional area of the first runner is larger than that of the second runner. The relatively large cross-sectional area of the first runner can enable the water in the main runner 301 to flow better into the flow direction-changing runner 303, while the relatively small cross-sectional area of the second runner can be better adapted to the bypass pipe 312 with a smaller pipe diameter. Optionally, a limiting boss 3112 is provided on the inner peripheral wall of the flow direction-changing pipe body 3111. The limiting boss 3112 is located between the first runner and the second runner. The limiting boss 3112 has a flow-through port for communicating the first runner and the second runner. One end of the bypass pipe 312 is inserted into the second runner and can abut against the limiting boss 3112.
[0063] As Figure 1 As shown, the present utility model further provides a water heater 1000. The water heater 1000 includes a housing 200 and a heat exchange system 100 disposed in the housing 200. The specific structure of the heat exchange system 100 refers to the above embodiments. Since the water heater 1000 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one. Among them, the water heater 1000 includes, but is not limited to, gas water heaters, electric water heaters, solar water heaters, air energy water heaters, electromagnetic eddy current water heaters, and heat pump water heaters. As long as a water heater that requires bypass mixing water is used, the technical solutions of the present utility model can be used. For the convenience of description, a gas water heater will be taken as an example for illustration below. The water heater 1000 can be a forced-draft gas water heater or a forced-exhaust gas water heater.
[0064] Exemplarily, as Figure 1As shown, the water heater 1000 includes a housing 200, and components such as a heat exchange system 100, a burner 300, a fan 400, a gas proportional valve 500, and a booster pump 600 disposed within the housing 200. Among them, the housing 200 serves as a support and protection component and a carrier for mounting other components. Specifically, the housing 200 may include a front shell 210 and a bottom shell 220. The front shell 210 and the bottom shell 220 enclose an installation space for accommodating components such as the heat exchange system 100, the burner 300, the fan 400, the gas proportional valve 500, and the booster pump 600. Among them, the bottom shell 220 can be used to mount the water heater 1000 on a wall or other support structures. The surface of the front shell 210 may be provided with a control panel for controlling or displaying the operating state of the water heater 1000. The burner 300 is disposed below the heat exchanger 10. The fan 400 and the gas proportional valve 500 are arranged side by side at the bottom of the burner 300 and communicate with the burner 300. Gas is supplied to the burner 300 through the gas proportional valve 500. When the fan 400 operates, it can supply secondary air to the burner 300 and can also drive the high-temperature flue gas generated by the combustion of the burner 300 to flow towards the heat exchanger 10 to heat the fluid in the heat exchange flow path of the heat exchanger 10. As Figure 1 shown, taking the first pipeline 21 as the outlet pipeline and the second pipeline 22 as the inlet pipeline as an example, the valve body 311 of the flow valve 30 is connected in series to the first pipeline 21 (i.e., the outlet pipeline). The bypass pipe 312 is connected between the valve body 311 and the second pipeline 22. The cold water of the external water system can be transported through the second pipeline 22 to the heat exchange flow path of the heat exchanger 10 for heating, and then through a part of the pipe section of the first pipeline 21 to the main flow path 301 of the valve body 311, and then through the main flow path 301 and then transported to another part of the pipe section of the first pipeline 21 to output hot water to the user end. At the same time, the cold water in the second pipeline 22 can be transported to the main flow path 301 through the bypass flow path 302 to be mixed with the hot water in the main flow path 301. In this way, the temperature of the hot water output from the main flow path 301 will not be too high to meet the requirement of constant-temperature water output. To increase the inlet water pressure, a booster pump 600 is connected to the inlet end of the inlet pipeline (such as the second pipeline 22). Of course, in some embodiments, it can also be that the first pipeline 21 is the inlet pipeline and the second pipeline 22 is the outlet pipeline. The valve body 311 of the flow valve 30 is connected in series to the first pipeline 21 (i.e., the inlet pipeline), and the bypass pipe 312 is connected between the valve body 311 and the first pipeline 21. In this way, the ambient temperature where the flow valve 30 is located can be relatively low, which is beneficial to extending the service life of the flow valve 30.
[0065] To facilitate the maintenance of the component 32, as Figure 1As shown, in one embodiment, the housing 200 includes a detachable bottom case 220 and a front case 210, and the control component 32 is detachably connected to one side of the valve body 31 facing the front case 210. In this way, the user can directly repair the control component 32 by opening the front case 210, reducing the difficulty of repairing the flow valve 30. Among them, the detachable connection method between the bottom case 220 and the front case 210, and the detachable connection method between the control component 32 and the valve body 31 include but are not limited to screw connection, snap connection, and so on.
[0066] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.
Claims
1. A heat exchange system, characterized in that: include: a heat exchanger having a first port and a second port; a pipeline assembly, comprising a first pipeline communicating with the first port, and a second pipeline communicating with the second port; as well as A flow valve comprises a valve body and a control component arranged on the valve body, wherein the valve body connects the first pipeline with the second pipeline, and the control component is used to control the water flow rate in the valve body; the first pipeline has a bending structure, and the bending structure forms a recessed area for at least partially accommodating the control component.
2. The heat exchange system according to claim 1, characterized in that: The heat exchanger includes a first end plate provided with the first port and the second port, the first end plate has a first side edge and a second side edge opposite to each other along a first direction, the bending structure is recessed from the first side edge toward the second side edge to form the recessed area, the control component is arranged on the side of the valve body facing the first side edge, and the surface of the control component does not exceed the first side edge.
3. The heat exchange system according to claim 2, characterized in that: The size of the control component (32) along the first direction is smaller than the recessed depth of the recessed area (201) along the first direction.
4. The heat exchange system according to any one of claims 1 to 3, characterized in that: The valve body includes a valve main body arranged in the first pipeline, and a bypass pipe connecting the valve main body with the second pipeline, a main flow channel connected to the first pipeline is formed in the valve body, and a bypass flow channel connected to the main flow channel with the second pipeline is formed in the bypass pipe, and the control component is used to control the water flow rate of the bypass flow channel.
5. The heat exchange system according to claim 4, characterized in that: The bending structure includes a first pipe segment and a second pipe segment that are bent and connected, the first pipe segment is located between the first port and the second pipe segment, the first pipe segment extends from an end close to the first port toward the second pipeline, the second pipe segment extends downward from an end of the first pipe segment away from the first port, the valve body is connected to the second pipe segment, and the control component is arranged on a side of the valve body away from the second pipeline.
6. The heat exchange system according to claim 5, characterized in that: The included angle between the axis of the first pipe section and the axis of the second pipe section is a right angle or an obtuse angle.
7. The heat exchange system according to claim 4, characterized in that: The bypass pipe is arranged as a straight pipe.
8. The heat exchange system according to claim 4, characterized in that: A reversing port connecting the main flow channel with the bypass flow channel is provided in the valve body, and the control component includes a driving component and a sealing component connected to the driving component. The driving component is provided on a side of the valve body close to the recessed area, and the sealing component is placed in the valve body. The driving component is used to drive the sealing component to adjust the opening of the reversing port.
9. A water heater, characterized in that: The invention comprises a shell and a heat exchange system according to any one of claims 1 to 8 arranged in the shell.
10. The water heater according to claim 9, characterized in that The housing comprises a bottom shell and a surface shell which are detachably connected, and the control component is detachably connected to a side of the valve body facing the surface shell.