Heat exchange structure, water tank assembly and water heater

Abstract

The utility model provides a heat exchange structure, a water tank assembly and a water heater. The heat exchange structure comprises an attaching plate, and the attaching plate is attached to the outer side face of the preset structure. And the flow path plate is arranged on the attaching plate, a flow channel groove is formed in the flow path plate, and the flow channel groove and the attaching plate jointly define a refrigerant channel. According to the heat exchange structure, the water tank assembly and the water heater, the outer side face of the preset structure is completely attached through the attaching plate, at the moment, no part exposed out of the attaching plate exists on the outer side face, covered by the attaching plate, of the preset structure, and the heating reliability of the preset structure is effectively improved; and the flow path plate is directly provided with the flow path groove, the heat exchange area of the refrigerant and the preset structure is increased, the flow speed of the refrigerant in the flow path surface can be moderate, the better heat exchange effect is achieved, the heat exchange efficiency of the preset structure is further improved, the heating capacity of the water heater is improved, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of life equipment, in particular to a heat exchange structure, a water tank component and a water heater. Background Art

[0002] Air-energy water heaters are favored by more and more consumers due to their significant energy-saving effects. The continued increase in sales of air-energy water heaters is inseparable from the contribution of heat exchangers. As the heart of the water heater tank, the aluminum microchannel heat exchanger has many advantages such as high heat transfer coefficient, low temperature difference heat transfer, simple structure, strong adaptability, etc. The vast majority of household air-energy water heaters on the market use this type of heat exchanger.

[0003] The structure of the microchannel heat exchanger currently on the market is basically that there are liquid collecting pipes on both sides longitudinally, and there are flat tubes evenly distributed horizontally in the middle. The two ends of the flat tubes are welded to the collecting pipes, and there is a gap between the flat tubes. Figure 1 As shown, there is a spacing between adjacent flat tubes, and a spacing is also required between the two collecting pipes to ensure the installation of the refrigerant pipeline. The water tank at this spacing cannot be heated, and the water tank is connected to the outside through the spacing, causing heat loss, resulting in poor heating effect of the water tank and high energy consumption. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the wrapping effect of the flat tube microchannel heat exchanger and the water tank is poor, resulting in poor heating effect and high energy consumption, a heat exchange structure, a water tank assembly and a water heater are provided, which use a bonding plate to completely wrap the preset structure and form a flow channel on the flow path plate to reduce the spacing effect so as to improve the heating efficiency and reduce energy consumption.

[0005] A heat exchange structure, comprising:

[0006] A bonding plate, wherein the bonding plate is bonded to the outer side of the preset structure;

[0007] A flow path plate is arranged on the bonding plate, and a flow path groove is formed on the flow path plate, and the flow path groove and the bonding plate together form a refrigerant channel.

[0008] The flow path plate is provided with a partition plate, and the flow channel groove is formed between two adjacent partition plates.

[0009] The flow path plate protrudes toward the bonding plate to form the partition plate.

[0010] The flattened shape of the heat exchange structure is a rectangle, and the flow channel grooves include a plurality of heat exchange flow channel grooves and at least two connecting flow channel grooves. The heat exchange flow channel grooves are arranged in parallel along the width direction of the rectangle, and the connecting flow channel grooves are located at the ends of the rectangle in the length direction, and the connecting flow channel grooves are connected to at least two of the heat exchange flow channel grooves.

[0011] On the same edge of the rectangle in the length direction, the number of the connecting flow channel grooves is at least two, and all the heat exchange flow channel grooves and all the connecting flow channel grooves together constitute the refrigerant channel with a continuous S-shape.

[0012] The preset structure is provided with a water inlet and a water outlet, the bonding plate covers the water inlet and / or the water outlet, and the bonding plate and the flow path plate are both provided with mounting holes, and the water inlet and / or the water outlet are connected to the outside of the heat exchange structure through the mounting holes.

[0013] The bonding plate is welded and fixed to the preset structure.

[0014] A water tank assembly comprises a water tank and the above-mentioned heat exchange structure, wherein the water tank constitutes the preset structure.

[0015] A water heater comprises the above-mentioned heat exchange structure or the above-mentioned water tank assembly.

[0016] The heat exchange structure, water tank assembly and water heater provided by the utility model utilize a bonding plate to completely bond the outer side surface of a preset structure. At this time, there is no part exposed to the outside of the bonding plate on the outer side surface of the preset structure covered by the bonding plate, which avoids the problems of poor heat exchange efficiency and heat leakage caused by the spacing between the flat tubes in the prior art, effectively improves the heating reliability of the preset structure, and directly arranges the flow channel groove on the flow channel plate without the need to arrange the flat tubes and other structures in the prior art, which can increase the flow path of the refrigerant in the heat exchange structure and also increase the heat exchange area between the refrigerant and the preset structure, so that the flow velocity of the refrigerant in the flow path surface can be moderate, thereby achieving a better heat exchange effect, further improving the heat exchange efficiency of the preset structure, improving the heating capacity of the water heater, and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a flat tube heat exchanger arranged on a water tank in the prior art;

[0018] Figure 2 A schematic diagram of the structure of a water tank assembly provided in an embodiment of the utility model;

[0019] Figure 3 A partial schematic diagram of a water tank assembly provided by an embodiment of the utility model;

[0020] Figure 4 A flattened schematic diagram of a heat exchange structure provided by an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of a refrigerant flow path provided by an embodiment of the utility model;

[0022] Figure 6 A schematic structural diagram of the side surface of the laminating plate and the water tank provided by the embodiment of the utility model;

[0023] In the figure:

[0024] 1. Laminating plate; 10. Preset structure; 2. Flow path plate; 31. Heat exchange flow channel groove; 32. Connecting flow channel groove; 11. Water inlet; 12. Water outlet. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The structure of the microchannel heat exchanger currently on the market is basically that there are liquid collecting pipes on both sides longitudinally, and there are flat tubes evenly distributed horizontally in the middle. The two ends of the flat tubes are welded to the collecting pipes, and there is a gap between the flat tubes. Figure 1 As shown, there is a spacing between adjacent flat tubes, and a spacing is also required between two headers to ensure the installation of the refrigerant pipeline. The water tank at this spacing cannot be heated, and the water tank is connected to the outside through the spacing, causing heat loss, resulting in poor heating effect of the water tank and high energy consumption. To this end, the present application provides a method as shown in FIG. Figures 2 to 6 The heat exchange structure shown includes: a bonding plate 1, which is bonded to the outer surface of the preset structure 10; a flow path plate 2, which is arranged on the bonding plate 1, and a flow channel groove is formed on the flow path plate 2, and the flow channel groove and the bonding plate 1 together form a refrigerant channel. The bonding plate 1 is used to completely bond the outer side of the preset structure 10, and at this time, there is no part exposed to the outside of the bonding plate 1 on the outer side of the preset structure 10 covered by the bonding plate 1, that is, the problem of poor heat exchange efficiency and heat leakage caused by the spacing between the flat tubes in the prior art is avoided, and the heating reliability of the preset structure 10 is effectively improved. Moreover, the flow channel groove is directly arranged on the flow path plate 2, and there is no need to arrange the flat tubes and other structures in the prior art, which can increase the flow path of the refrigerant in the heat exchange structure, and can also increase the heat exchange area between the refrigerant and the preset structure 10, so that the refrigerant can have a moderate flow velocity in the flow path, and achieve a better heat exchange effect, further improve the heat exchange efficiency of the preset structure 10, improve the heating capacity of the water heater, and improve the energy utilization efficiency.

[0031] As an embodiment, a partition is provided on the flow path plate 2, and the flow channel groove is formed between two adjacent partitions. The partition is used to reduce the spacing between the flow channel grooves as much as possible, so that the number of flow channel grooves can be increased, and then the heat exchange area between the refrigerant and the preset structure 10 can be increased, so that the flow velocity of the refrigerant in the flow path surface is moderate, and a better heat exchange effect is achieved, and the heat exchange efficiency of the preset structure 10 is further improved, the heating capacity of the water heater is improved, and the energy utilization efficiency is improved. For example, the flow path plate 2 protrudes toward the bonding plate 1 to form the partition. That is, the partition is a partial structure of the flow path plate 2, thereby reducing the structural complexity and production difficulty of the heat exchange structure, and reducing the production cost of the heat exchange structure. Preferably, the flow path plate 2 forms the flow channel groove by a press molding process.

[0032] The flattened shape of the heat exchange structure is a rectangle, and the flow channel grooves include a plurality of heat exchange flow channel grooves 31 and at least two connecting flow channel grooves 32. The heat exchange flow channel grooves 31 are arranged in parallel along the width direction of the rectangle, and the connecting flow channel grooves 32 are located at the ends of the length direction of the rectangle, and the connecting flow channel grooves 32 are connected with at least two of the heat exchange flow channel grooves 31. The connecting flow channel grooves 32 are used to connect different heat exchange flow channel grooves 31, so that the refrigerant can flow into the heat exchange flow channel grooves 31 from the outside of the heat exchange structure, and then be deflected by the corresponding connecting flow channel grooves 32, and flow into the corresponding heat exchange flow channel grooves 31 again, and finally flow through the entire heat exchange structure and then flow out of the refrigerant channel, thereby realizing reliable heating of the preset structure 10 by the refrigerant. As an embodiment, on the same edge of the length direction of the rectangle, the number of the connecting flow channel grooves 32 is at least two, and all of the heat exchange flow channel grooves 31 and all of the connecting flow channel grooves 32 together constitute the refrigerant channel having a continuous S-shape. Figure 1 As shown in the figure, the number of heat exchange flow channel grooves 31 is 18, and they are defined as a, b, c, ... s from top to bottom, wherein the connecting flow channel groove 32 on the upper right side of the rectangle is connected to the external refrigerant, and the external refrigerant can flow into a and b through the connecting flow channel groove 32, and bend in the next connecting flow channel groove 32 to flow into c and d, and then after passing through the next connecting flow channel groove 32 on the right, it flows to the left side of the rectangle through the heat exchange flow channel groove 31e, and then flows into f, g, ... s after passing through the next connecting flow channel groove 32. h, i, j and flows to the right side of the rectangle again, and then flows into k, l, m, n, o through the next connecting flow channel groove 32 and flows to the left side of the rectangle, and then flows into p, q, r, s through the next connecting flow channel groove 32, and finally reaches the connecting flow channel groove 32 at the bottom of the right side of the rectangle, and then discharges the heat exchange structure, completing multiple deflections of the refrigerant in the heat exchange structure, thereby ensuring the heating effect of the refrigerant on the water in the preset structure 10 through the heat exchange structure, and ensuring the heat exchange reliability of the heat exchange structure.

[0033] In order to facilitate the supply of cold water and the discharge of hot water into the preset structure 10, a water inlet 11 and a water outlet 12 are provided on the preset structure 10, the bonding plate 1 covers the water inlet 11 and / or the water outlet 12, and the bonding plate 1 and the flow path plate 2 are both provided with mounting holes, and the water inlet 11 and / or the water outlet 12 are connected to the outside of the heat exchange structure through the mounting holes.

[0034] The bonding plate 1 is welded and fixed to the preset structure 10. By welding, the connection structures required for the flat tube heat exchanger in the prior art, such as the connection plate and the fixing nut, are reduced, the connection reliability between the heat exchange structure and the preset structure 10 is improved, and the production cost can be reduced.

[0035] A water tank assembly comprises a water tank and the above-mentioned heat exchange structure, wherein the water tank constitutes the preset structure 10. The outer side of the water tank is a flat surface after unfolding, thereby ensuring that the bonding plate 1 is reliably bonded to the outer side of the water tank, improving the heat exchange efficiency, and facilitating the rolling operation of the heat exchange structure to improve the reliability of the wrapping of the water tank.

[0036] A water heater comprises the above-mentioned heat exchange structure or the above-mentioned water tank assembly.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat exchange structure, characterized in that: include: A bonding plate (1), wherein the bonding plate (1) is bonded to the outer surface of the preset structure (10); A flow path plate (2), the flow path plate (2) being arranged on the bonding plate (1), and a flow path groove being formed on the flow path plate (2), the flow path groove and the bonding plate (1) together forming a refrigerant channel; The flow path plate (2) is provided with a partition plate, and the flow channel groove is formed between two adjacent partition plates.

2. The heat exchange structure according to claim 1, characterized in that: The flow path plate (2) protrudes toward the bonding plate (1) to form the partition plate.

3. The heat exchange structure according to claim 1, characterized in that: The flattened shape of the heat exchange structure is a rectangle, the flow channel grooves include a plurality of heat exchange flow channel grooves (31) and at least two connecting flow channel grooves (32), the heat exchange flow channel grooves (31) are arranged in parallel along the width direction of the rectangle, the connecting flow channel grooves (32) are located at the ends of the rectangle in the length direction, and the connecting flow channel grooves (32) are connected to at least two of the heat exchange flow channel grooves (31).

4. The heat exchange structure according to claim 3, characterized in that: On the same edge in the length direction of the rectangle, the number of the connecting flow channel grooves (32) is at least two, and all the heat exchange flow channel grooves (31) and all the connecting flow channel grooves (32) together constitute the refrigerant channel having a continuous S-shape.

5. The heat exchange structure according to claim 1, characterized in that: The preset structure (10) is provided with a water inlet (11) and a water outlet (12), the bonding plate (1) covers the water inlet (11) and / or the water outlet (12), and the bonding plate (1) and the flow path plate (2) are both provided with mounting holes, and the water inlet (11) and / or the water outlet (12) are connected to the outside of the heat exchange structure through the mounting holes.

6. The heat exchange structure according to claim 1, characterized in that: The bonding plate (1) is fixed to the preset structure (10) by welding.

7. A water tank assembly, characterized in that: It comprises a water tank and the heat exchange structure according to any one of claims 1 to 6, wherein the water tank constitutes the preset structure (10).

8. A water heater, characterized in that: It comprises the heat exchange structure according to any one of claims 1 to 6 or the water tank assembly according to claim 7.

Images