Water heater heat exchange mechanism and water heater thereof

Abstract

The utility model discloses a water heater heat exchange mechanism which comprises a heat exchanger body and a protective cover, the protective cover is arranged outside the heat exchanger body in a covering mode, the heat exchanger body comprises a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are arranged on the protective cover in a penetrating mode. According to the heat exchange mechanism of the water heater, the protective cover is additionally arranged outside the heat exchanger body, and noise generated by the water heater body is reduced through the protective cover. Meanwhile, the protective cover also has a heat insulation function, so that the heat exchange efficiency can be improved, the coil pipe can be prevented from freezing and spalling in winter, the structure is simple, and the cost is lower. The utility model further discloses a water heater which has the advantages of reducing noise, insulating heat and preventing the coil pipe from freezing.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a heat exchange mechanism of a water heater and the water heater. Background Art

[0002] Gas water heaters are popular among consumers due to their advantages such as fast hot water output speed, stable water temperature, unlimited water output, and economy. Its working principle is to heat the cold water in the heat exchanger by the high-temperature flue gas generated by gas combustion to prepare hot water.

[0003] However, the heat exchangers of gas water heaters generally have low efficiency, and generally need to increase the number of fins to improve the efficiency. In addition, the outside of the existing heat exchanger is the shell of the water heater, and the water flow noise is relatively large; and the outside of the heat exchanger is in contact with the air inside the machine, which not only reduces the temperature of the heat exchanger, but also has the potential risk of freezing and cracking of the coiled pipes of the heat exchanger in winter. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a heat exchange mechanism of a water heater and the water heater to solve the technical problems that the heat exchanger of the existing water heater is exposed, resulting in relatively large noise, low heat exchange efficiency and the potential risk of freezing and cracking.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, an embodiment of the utility model provides a heat exchange mechanism of a water heater, which includes: a heat exchanger main body and a protective cover. The protective cover covers the outside of the heat exchanger main body. The heat exchanger main body includes a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe penetrate through the protective cover.

[0007] Among them, the protective cover is a sound insulation cover.

[0008] Among them, the protective cover is a heat insulation cover.

[0009] Among them, at least two support positions are provided at the top of the protective cover, and the support positions support on the heat exchange elbow pipe of the heat exchanger main body.

[0010] Among them, the bottom of the protective cover is provided with a bottom opening, and both the water inlet pipe and the water outlet pipe are led out of the protective cover through the bottom opening.

[0011] Among them, the protective cover includes: a left half shell and a right half shell spliced with the left half shell. Each of the top of the left half shell and the right half shell is provided with a support plate, and a support position is provided on the support plate, and the support position supports on the heat exchange elbow pipe of the heat exchanger main body.

[0012] Among them, the left half shell and the right half shell have the same structure, and both include: a side plate and a folded edge that extends horizontally inward from the top edge of the side plate. The support plate is connected to the bottom surface of the folded edge, and the vertical side edges of the side plate of the left half shell and the side plate of the right half shell are in contact with each other.

[0013] Among them, the support position is a groove opened on the support plate.

[0014] Among them, the groove supports the root of the heat exchange elbow pipe.

[0015] In a second aspect, an embodiment of the present invention provides a water heater, which includes a housing and the water heater heat exchange mechanism as described in any one of the above in the housing.

[0016] For the water heater heat exchange mechanism and the water heater of the present invention, by adding a protective cover outside the heat exchanger main body, the noise generated by the water heater main body is reduced by the protective cover. At the same time, the protective cover also has a heat insulation function, which can not only reduce heat energy loss and improve heat exchange efficiency, but also prevent the coil of the heat exchanger from freezing and cracking in winter. Its structure is simple and the cost is low.

[0017] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following preferred embodiments are specifically described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the heat exchanger main body of an existing water heater.

[0019] Figure 2 It is a schematic overall structural diagram of the water heater heat exchange mechanism of an embodiment of the present invention.

[0020] Figure 3 It is a schematic bottom structural diagram of the water heater heat exchange mechanism of an embodiment of the present invention.

[0021] Figure 4 It is an exploded view of the water heater heat exchange mechanism of an embodiment of the present invention.

[0022] Figure 5 For Figure 4 The enlarged structural diagram of the partial A in

[0023] Figure 6 For Figure 4 The enlarged structural diagram of the partial B in

[0024] Figure 7This is a schematic diagram of the partial structure of the left half shell of the heat exchange mechanism of the water heater according to the embodiment of the present utility model.

[0025] Figure 8 This is a schematic diagram of the partial structure of the right half shell of the heat exchange mechanism of the water heater according to the embodiment of the present utility model.

[0026] Explanation of reference numerals:

[0027] Water heater heat exchange mechanism 100, heat exchanger main body 10, protective cover 20, combustion chamber 11, heat exchange element 12, water inlet pipe 13, water outlet pipe 14, heat exchange elbow 15, heat exchange elbow 16, coil 17, bottom opening 21, left half shell 22, right half shell 23, side plate 220, support plate 221, rear folding edge 222, left side folding edge 223, front folding edge 224, vertical side edge 225, side plate 230, support plate 231, rear folding edge 232, right side folding edge 233, front folding edge 234, vertical side edge 235, root 151, root 161, groove 2311. Detailed implementation manners

[0028] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners.

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "resin", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed" and the like shall be construed in a broad sense. For example, it may be a connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] Embodiment 1

[0036] Generally, the heat exchanger of an existing gas water heater is directly fixed inside the water heater housing, and there is no protective structure between the outside of the heat exchanger and the housing. This causes the noise generated by the heat exchanger to be directly transmitted to the external environment, affecting the user experience. At the same time, the efficiency of the heat exchanger is affected by heat release or loss. The heat generated by the exposed heat exchanger is easily lost, reducing the heat exchange efficiency of the heat exchanger. In winter at low temperatures, it is also easy to cause hidden dangers such as the water remaining in the coil freezing and cracking. Based on the defects of the heat exchanger of the existing water heater, the following solutions are proposed in this embodiment.

[0037] As Figures 1 to 8 shown, the heat exchange mechanism 100 of the water heater in this embodiment includes a heat exchanger main body 10 and a protective cover 20. The protective cover 20 covers the outside of the heat exchanger main body 10. The heat exchanger main body 10 includes a water inlet pipe 13 and a water outlet pipe 14. The water inlet pipe 13 and the water outlet pipe 14 pass through the protective cover 20 to input cold water and output hot water to the heat exchanger main body 10 respectively. In this embodiment, a special protective cover 20 is provided outside the heat exchanger main body 10. The protective cover 20 covers the outside of the heat exchanger main body 10, which can not only reduce the noise of combustion and water flow of the heat exchanger main body 10, but also has heat insulation characteristics, preventing heat energy loss and improving the heating efficiency. When used in winter, it can maintain the internal temperature of the heat exchanger main body 10 and prevent the water in the coil from freezing and cracking the coil.

[0038] Please refer to Figure 1 again. It is one of the existing conventional structures of the heat exchanger main body 10. The heat exchanger main body 10 includes a combustion chamber 11, a heat exchange member 12 connected to the top of the combustion chamber 11, a heat exchange elbow 15(16) embedded in the heat exchange member 12, and a coil 17 wound around the outer wall of the combustion chamber 11. The water inlet pipe 13 is connected to one end of the coil 17, and the water outlet pipe 14 is connected to the other end of the coil 17. The water inlet pipe 13 is externally connected to the cold water input from the outside, and the water outlet pipe 14 outputs the hot water heated and raised in temperature. There is a wrapped combustion chamber 11 under the heat exchange member 12, and a heat exchange coil 17 is wound around the periphery of the combustion chamber 11. The cold water enters the heat exchange component through the water inlet pipe 13, is heated by the high-temperature flue gas in the combustion chamber 11, flows through the coil 17, and then flows out the domestic hot water through the water outlet pipe 14. The combustion chamber 11, the heat exchange member 12, and the heat exchange coil 17 of this conventional heat exchanger main body 10 are all exposed in the air. The heat is easily absorbed by the cold air, thus reducing the outlet water temperature, that is, reducing the thermal efficiency. Moreover, the combustion sound and the water flow sound are easily transmitted to the outside without shielding, causing usage noise. The heat exchange coil 17 is exposed in the air. When used in severe winter, the water remaining in the coil 17 is easy to freeze and crack the coil 17, reducing the service life of the heat exchanger main body 10.

[0039] In this embodiment, the structure of the existing heat exchanger main body 10 is not modified, but a protective cover 20 is added outside it. The protective cover 20 performs noise reduction, heat insulation, and anti-freezing treatments on the heat exchanger main body 10.

[0040] In one of the embodiments, the protective cover 20 is a noise reduction cover. The noise reduction cover is a cover body made of noise reduction material, or a noise reduction cover structure with a noise reduction layer provided on the inner wall or outer wall of the shell. On the heat exchanger main body 10, the combustion chamber 11 and the water flow part mainly generate noise, and the combustion chamber 11 is also the largest part of the heat exchanger main body 10. Therefore, the protective cover 20 is mainly disposed outside the combustion chamber 11 to reduce the transmission of noise generated by the combustion chamber 11 part to the outside, and finally achieve the noise reduction goal.

[0041] In one of the embodiments, the protective cover 20 is a heat insulation cover. The heat insulation cover can reduce the amount and speed of heat energy transfer from the heat exchanger main body 10 to the external environment, and try to make the heat energy transfer to the coil 17 and then heat the water flowing through the coil 17. Therefore, the heat insulation cover can reduce the heat energy loss at the combustion chamber 11 and improve the heat exchange efficiency. Especially in winter, the heat insulation cover also has a heat preservation function, thereby preventing the cold air in the environment from directly flowing through the coil 17 outside the heat exchanger main body 10, resulting in the ice formation and cracking of the coil 17 of the heat exchanger main body 10.

[0042] It can be understood that in another embodiment, the protective cover 20 can also be an outer cover that simultaneously has heat insulation and noise reduction functions. At this time, the protective cover 20 has the dual functions of the above-mentioned noise reduction cover and heat insulation cover.

[0043] Among them, at least two support positions are provided at the top of the protective cover 20, and the support positions support on the heat exchange elbow 15(16) at the top of the heat exchanger main body 10. By setting the support positions at the top of the protective cover 20, the protective cover 20 is supported on the top of the heat exchanger main body 10, so that a certain gap is reserved between the protective cover 20 and the heat exchanger main body 10, rather than direct contact, which reduces the heat dissipation speed and improves the noise reduction effect. The air in the gap will have a certain negative impact on the sound propagation and heat energy transfer. At the same time, by setting the support positions at the top of the protective cover 20, the connection structure between the protective cover 20 and the heat exchanger main body 10 can be simplified. The protective cover 20 can be hung on the heat exchanger main body 10 through the support positions without other auxiliary connection structures, which can reduce costs.

[0044] In this embodiment, a bottom opening 21 is provided at the bottom of the protective cover 20, and both the water inlet pipe 13 and the water outlet pipe 14 are led out of the protective cover 20 through the bottom opening 21. Of course, the water inlet pipe 13 and the water outlet pipe 14 can also be led out from other positions of the protective cover 20 according to the distribution positions of other components of the heat exchanger main body 10.

[0045] The protective cover 20 is an integral cubic shell structure. During assembly, the protective cover 20 is directly sleeved downward from above the heat exchanger main body 10 outside the heat exchanger main body 10 until the support position abuts against the top heat exchange elbow 15(16) of the heat exchanger main body 10. Among them, the heat exchange elbows 15 and 16 are heat exchange tubes embedded in the heat exchange member 12 and with their ends extending outside the combustion chamber 11. The protective cover 20 cleverly utilizes the self-structure of the heat exchanger main body 10 to realize the connection and assembly of the two.

[0046] Please refer to again Figures 4 to 8 , in this embodiment, the protective cover 20 is designed with a split structure. Specifically, the protective cover 20 includes: a left half shell 22 and a right half shell 23 spliced with the left half shell 22. Each of the tops of the left half shell 22 and the right half shell 23 is provided with a support plate 221(231), and a support position is provided on the support plate 221(231), and the support position supports on the top heat exchange elbow 15(16) of the heat exchanger main body 10.

[0047] Furthermore, the left half shell 22 and the right half shell 23 are symmetrical structures on the left and right, thus simplifying the processing procedure and reducing the processing cost.

[0048] As Figure 4 shown, the left half shell 22 and the right half shell 23 have the same structure. The left half shell 22 includes: a side plate 220 and a folded edge extending horizontally inward from the top edge of the side plate 220. This folded edge includes a left folded edge 223 on the left side, a rear folded edge 222 on the rear side, and a front folded edge 224 on the front side. The support plate 221 is connected to the bottom surface of the left folded edge 223. Among them, the side plate 220 includes a rear side plate, a left side plate, and a front side plate that are sequentially bent. The corresponding left folded edge 223, rear folded edge 222, and front folded edge 224 are respectively formed by horizontally bending the top edges of the left side plate, rear side plate, and front side plate.

[0049] Similarly, the right half shell 23 includes: a side plate 230 and a folded edge extending horizontally inward from the top edge of the side plate 230. Specifically, the folded edge of the right half shell 23 includes: a front folded edge 234 on the front side, a rear folded edge 232 on the rear side, and a right folded edge 233 on the right side. The support plate 231 is connected to the bottom surface of the right folded edge 233.

[0050] After the left half shell 22 and the right half shell 23 are assembled, the side plate 220 of the left half shell 22 abuts against the vertical side edges 225 and 235 of the side plate 230 of the right half shell 23, so as to form a shell with a relatively neat external integrated structure. In this embodiment, the protective cover 20 adopts a structural design of splicing the left half shell 22 and the right half shell 23, which can simplify its processing procedure and reduce the disassembly and assembly difficulty between the protective cover 20 and the heat exchanger main body 10.

[0051] As Figure 6 shown, the support position is a groove 2311 formed on the support plate 231. Similarly, the structure of the support plate 221 provided on the left half shell 22 is the same as that of the support plate 231. Among them, in order to improve the stability of the protective cover 20 in the front-back direction after being assembled on the heat exchanger main body 10, at least two grooves 2311 are provided, and the support plate 231 extends in the front-back direction, with multi-point support, so as to avoid the front-back shaking of the protective cover 20.

[0052] As Figure 5 shown, in this embodiment, the groove 2311 supports the root 151 (161) of the heat exchange elbow 15 (16), and the root 151 (161) is closer to the side wall of the combustion chamber 11. Supporting the protective cover 20 here is more stable.

[0053] The water heater heat exchange mechanism 100 of this embodiment reduces the noise generated by the water heater main body through adding a protective cover 20 outside the heat exchanger main body 10. At the same time, the protective cover 20 also has a heat insulation function, which can not only improve the heat exchange efficiency, but also prevent the coil of the heat exchanger from freezing and cracking in winter. Its structure is simple and the cost is low.

[0054] It should be noted that the heat exchange mechanism design of this embodiment can be a gas water heater or an exchanger on a gas wall-mounted boiler.

[0055] Embodiment Two

[0056] This embodiment provides a water heater, which includes the water heater heat exchange mechanism 100 as described in Embodiment One, and a housing provided outside the water heater heat exchange mechanism 100.

[0057] Adopting the water heater design of this embodiment, it has less noise, higher heat exchange efficiency, and can avoid the risk of freezing and cracking of the coil of the heat exchanger main body 10 in winter.

[0058] The above only further illustrates the technical content of the present utility model by way of embodiments to facilitate easier understanding by readers, but it does not mean that the implementation manners of the present utility model are limited thereto. Any technical extension or re-creation made in accordance with the present utility model is protected by the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A water heater heat exchange mechanism, characterized in that: It includes: a heat exchanger body and a protective cover, wherein the protective cover is arranged on the outside of the heat exchanger body, the heat exchanger body includes a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are passed through the protective cover, the protective cover is a sound-absorbing and heat-insulating cover, and a support position is also provided on the top of the protective cover, and the support position is supported on the top heat exchange bend of the heat exchanger body.

2. The water heater heat exchange mechanism according to claim 1, characterized in that: The bottom of the protective cover is provided with a bottom opening, and the water inlet pipe and the water outlet pipe are both led out of the protective cover through the bottom opening.

3. The water heater heat exchange mechanism according to claim 2, characterized in that: The protective cover includes: a left half shell and a right half shell spliced ​​with the left half shell, the top of the left half shell and the top of the right half shell are respectively provided with a support plate, the support plate is provided with a support position, and the support position is supported on the top heat exchange elbow of the heat exchanger body.

4. The water heater heat exchange mechanism according to claim 3, characterized in that: The left half shell and the right half shell have the same structure, both comprising: a side plate and a folded edge extending laterally inward from the top edge of the side plate, the support plate is connected to the bottom surface of the folded edge, and the side plate of the left half shell and the vertical side edges of the side plate of the right half shell abut against each other.

5. The water heater heat exchange mechanism according to claim 4, characterized in that: The supporting position is a groove formed on the supporting plate.

6. The water heater heat exchange mechanism according to claim 5, characterized in that: The groove is supported at the root of the top heat exchange elbow.

7. A water heater, characterized in that: The water heater comprises an outer shell and a water heater heat exchange mechanism as claimed in any one of claims 1 to 6 arranged in the outer shell.

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