Gas water heater

Abstract

The present invention relates to a gas water heater, which comprises a heat exchange body and a heat insulation structure, wherein the heat insulation structure comprises a heat insulation body, a first heat insulation part and a second heat insulation part. The first heat insulation part and the second heat insulation part are respectively arranged on the heat insulation body. Since the first heat insulation part and the second heat insulation part are arranged at intervals, the heat insulation structure can be sleeved on the heat exchange body by the space between the first heat insulation part and the second heat insulation part, so that one end of the heat exchange body is located in the first heat insulation cavity, and the other end of the heat exchange body is located in the second heat insulation cavity. The heat insulation structure can effectively reduce the heat dissipation loss of the heat exchange body, thereby improving the heat exchange efficiency of the heat exchange body. The structural complexity of the above-mentioned heat insulation structure is low, and the installation process only needs to be sleeved on the heat exchange body, which effectively improves the installation efficiency of the heat insulation structure.

Description

Technical Field

[0001] The invention relates to the technical field of heat insulation, in particular to a gas water heater. Background Art

[0002] In the process of heat exchange, a gas water heater generally sets a heat insulation layer on the outer surface of the heat exchange body to reduce the heat loss of the gas water heater and improve the heat transfer efficiency of the heat exchange. However, the traditional heat insulation layer structure is generally complex, which leads to inconvenient installation process and low installation efficiency. Summary of the invention

[0003] Based on this, it is necessary to provide a gas water heater and a heat insulation structure that can improve installation efficiency in order to address the above problems.

[0004] A heat insulation structure, comprising:

[0005] A heat-insulating body, forming a first heat-insulating cavity;

[0006] A first heat insulation part, disposed on the heat insulation body;

[0007] The second insulation part is arranged on the insulation body, the second insulation part is arranged opposite to the first insulation part with a gap, the space between the first insulation part and the second insulation part forms a second insulation cavity, and the second insulation cavity is connected with the first insulation cavity.

[0008] In one embodiment, the thermal insulation structure is an axisymmetric structure, and the first thermal insulation part and the second thermal insulation part are symmetrically arranged with respect to the axis of symmetry.

[0009] In one embodiment, the first heat insulation part and the second heat insulation part are integrally formed on the heat insulation body.

[0010] In one embodiment, the first heat insulation part and the second heat insulation part are both plate-shaped structures.

[0011] In one embodiment, a first limiting groove is formed on a side of the first thermal insulation portion facing the second thermal insulation portion, and the first limiting groove is used for installing a coil corresponding to the first thermal insulation portion; and / or

[0012] A second limiting groove is formed on one side of the second heat insulating portion facing the first heat insulating portion, and the second limiting groove is used for installing the coil corresponding to the second heat insulating portion.

[0013] In one embodiment, the thermal insulation structure also includes a third thermal insulation part and a fourth thermal insulation part, and the third thermal insulation part and the fourth thermal insulation part are both arranged on the thermal insulation body. The fourth thermal insulation part is arranged relative to the third thermal insulation part and together with the first thermal insulation part and the second thermal insulation part, forms the second thermal insulation cavity.

[0014] A gas water heater, comprising:

[0015] heat exchange body; and

[0016] As described above, the heat insulation structure is sleeved on the heat exchange body, so that one end of the heat exchange body is located in the first heat insulation cavity, and the other end of the heat exchange body is located in the second heat insulation cavity.

[0017] In one embodiment, the heat exchange body includes a heat exchange box and a coil, the coil is wound around the heat exchange box, and the coil is located in the second insulation cavity.

[0018] In one embodiment, the heat exchange body also includes a plurality of heat exchange fins and heat exchange tubes. The plurality of heat exchange fins are stacked and arranged on one end of the heat exchange box body. One end of the heat exchange tube is connected to the coil, and the other end passes through the plurality of stacked heat exchange fins. The heat exchange fins are located in the first insulation cavity.

[0019] In one embodiment, the heat exchange body also includes a first water pipe and a second water pipe, the first water pipe is connected to an end of the coil away from the heat exchange tube, the second water pipe is connected to an end of the heat exchange tube away from the coil, the first water pipe and the second water pipe are respectively arranged on opposite sides of the heat exchange box, and the first water pipe and the second water pipe are both located between the first insulation part and the second insulation part.

[0020] In one embodiment, a first limiting portion is formed on the outer wall of the heat exchange body, and a second limiting portion is formed on the inner wall of the heat insulation structure, and the second limiting portion can abut against the first limiting portion.

[0021] In one embodiment, there are two second limiting portions, the first heat insulation portion is bent relative to the heat insulation body to form a second limiting portion, and the second heat insulation portion is bent relative to the heat insulation body to form another second limiting portion, the number of the first limiting portions corresponds to the number of the second limiting portions, and each of the second limiting portions can correspondingly abut against one of the first limiting portions.

[0022] When the gas water heater and the heat insulation structure are in use, the first heat insulation part and the second heat insulation part are respectively arranged on the heat insulation body. Since the first heat insulation part and the second heat insulation part are arranged at intervals, the heat insulation structure can be sleeved on the heat exchange body by the space between the first heat insulation part and the second heat insulation part, so that one end of the heat exchange body is located in the first heat insulation cavity, and the other end of the heat exchange body is located in the second heat insulation cavity. The heat insulation structure can effectively reduce the heat dissipation loss of the heat exchange body, thereby improving the heat exchange efficiency of the heat exchange body. The structural complexity of the above-mentioned heat insulation structure is low, and the installation process only needs to be sleeved on the heat exchange body, which effectively improves the installation efficiency of the heat insulation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0026] Figure 1 is a partial cross-sectional view of a gas water heater in one embodiment;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the heat exchange main body;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of the heat insulation structure;

[0029] Figure 4 for Figure 3 A schematic structural diagram of the thermal insulation structure shown in another perspective.

[0030] Description of reference numerals:

[0031] 10. Gas water heater, 100. Heat exchange body, 110. First limiting part, 120. Heat exchange box, 130. Coil, 140. Heat exchange fins, 150. Heat exchange tube, 160. First water pipe, 170. Second water pipe, 200. Insulation structure, 210. Insulation body, 212. First insulation cavity, 214. Avoidance groove, 220. First insulation part, 222. First limiting groove, 230. Second insulation part, 232. Second limiting groove, 240. Second insulation cavity, 250. Second limiting part. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figures 1 to 3 The gas water heater 10 in one embodiment includes a heat exchange body 100 and a heat insulation structure 200, wherein the heat insulation structure 200 is sleeved on the heat exchange body 100. The heat insulation structure 200 can effectively reduce the heat loss of the heat exchange body 100, thereby improving the heat exchange efficiency. At the same time, it can also reduce the temperature inside the gas water heater 10, thereby reducing the damage to the electronic components in the gas water heater 10, which is conducive to extending the service life of the gas water heater 10. In other embodiments, the heat insulation structure 200 can also be applied to other equipment that requires heat insulation.

[0034] In one embodiment, the heat insulation structure 200 includes a heat insulation body 210, a first heat insulation part 220 and a second heat insulation part 230, and the heat insulation body 210 forms a first heat insulation cavity 212. The first heat insulation part 220 is disposed on the heat insulation body 210, and the second heat insulation part 230 is disposed on the heat insulation body 210. The second heat insulation part 230 is disposed opposite to the first heat insulation part 220, and the space between the first heat insulation part 220 and the second heat insulation part 230 forms a second heat insulation cavity 240, and the second heat insulation cavity 240 is connected to the first heat insulation cavity 212. The heat insulation structure 200 is sleeved on the heat exchange body 100, so that one end of the heat exchange body 100 is located in the first heat insulation cavity 212, and the other end of the heat exchange body 100 is located in the second heat insulation cavity 240.

[0035] When the gas water heater 10 and the heat insulation structure 200 are in use, the first heat insulation part 220 and the second heat insulation part 230 are respectively arranged on the heat insulation body 210. Since the first heat insulation part 220 and the second heat insulation part 230 are arranged at intervals, the heat insulation structure 200 can be sleeved on the heat exchange body 100 by the space between the first heat insulation part 220 and the second heat insulation part 230, so that one end of the heat exchange body 100 is located in the first heat insulation cavity 212, and the other end of the heat exchange body 100 is located in the second heat insulation cavity 240. The heat insulation structure 200 can effectively reduce the heat dissipation loss of the heat exchange body 100, thereby improving the heat exchange efficiency of the heat exchange body 100. The heat insulation structure 200 has low structural complexity, and the installation process only needs to be sleeved on the heat exchange body 100, which effectively improves the installation efficiency of the heat insulation structure 200. At the same time, since the heat insulation structure 200 can be directly mounted on the heat exchange body 100, it is possible to avoid changing the structure of the heat exchange body 100 due to the installation of the heat insulation structure 200, which is beneficial to reducing costs.

[0036] See also Figure 2 and Figure 3 In this embodiment, since the first insulation part 220 and the second insulation part 230 are arranged opposite to each other at intervals, an opening is formed between the first insulation part 220 and the second insulation part 230 at one end away from the insulation body 210, so that the insulation structure 200 is conveniently sleeved on the heat exchange body 100 through the opening. At the same time, the side edge of the first insulation part 220 adjacent to the insulation body 210 and the second insulation part 230 further forms an opening, thereby preventing the second insulation cavity 240 from being closed, which affects the efficiency of being sleeved on the heat exchange body 100.

[0037] In one embodiment, the size of one end of the heat exchange body 100 matches the size of the first insulation cavity 212, and the size of the other end of the heat exchange body 100 matches the size of the second insulation cavity 240. This can improve the stability of one end of the heat exchange body 100 in the first insulation cavity 212, and improve the stability of the other end of the heat exchange body 100 in the second insulation cavity 240.

[0038] Specifically, the size of the cross section of the second heat insulation cavity 240 is larger than the size of the cross section of the first heat insulation cavity 212, so that the heat insulation structure 200 can be sleeved on the heat exchange body 100 from one side of the second heat insulation cavity 240. Since the size of the cross section of the second heat insulation cavity 240 is larger than the size of the cross section of the first heat insulation cavity 212, it is convenient for one end of the heat exchange body 100 to pass through the second heat insulation cavity 240 and be installed in the first heat insulation cavity 212. At the same time, when the heat insulation structure 200 is sleeved on the heat exchange body 100, the difference in size between the first heat insulation cavity 212 and the second heat insulation cavity 240 can be used to achieve the position limitation of the heat insulation structure 200 on the heat exchange body 100. In other embodiments, the size of the cross section of the first heat insulation cavity 212 can also be consistent with the size of the cross section of the second heat insulation cavity 240.

[0039] In one embodiment, a first limiting portion 110 is formed on the outer wall of the heat exchange body 100, and a second limiting portion 250 is formed on the inner wall of the heat insulation structure 200, and the second limiting portion 250 can abut against the first limiting portion 110. The first limiting portion 110 and the second limiting portion 250 can effectively limit the stability of the heat insulation structure 200 on the heat exchange body 100.

[0040] Specifically, there are two second limiting portions 250, the first heat insulating portion 220 is bent relative to the heat insulating body 210 to form one second limiting portion 250, the second heat insulating portion 230 is bent relative to the heat insulating body 210 to form another second limiting portion 250, the number of the first limiting portions 110 corresponds to the number of the second limiting portions 250, and each second limiting portion 250 can abut against a corresponding first limiting portion 110. By bending the first heat insulating portion 220 and the second heat insulating portion 230 to form the second limiting portion 250, the stability of the heat insulating structure 200 disposed on the heat exchange body 100 can be further improved.

[0041] In this embodiment, since the size of one end of the heat exchange body 100 is smaller than the size of the other end of the heat exchange body 100, the first limit portion 110 is formed by utilizing the size difference between the one end and the other end of the heat exchange body 100. The size of the cross section of the second heat insulation cavity 240 is larger than the size of the cross section of the first heat insulation cavity 212, and the second limit portion 250 is formed by utilizing the size difference between the second heat insulation cavity 240 and the first heat insulation cavity 212.

[0042] In one embodiment, the heat insulation structure 200 further includes a third heat insulation part and a fourth heat insulation part, both of which are arranged on the heat insulation body 210, and the fourth heat insulation part is arranged opposite to the third heat insulation part, and together with the first heat insulation part 220 and the second heat insulation part 230, the second heat insulation cavity 240 is enclosed. The third heat insulation part and the fourth heat insulation part can be provided to further improve the sealing degree of the second heat insulation cavity 240, thereby improving the heat insulation effect of the heat insulation structure 200 on the heat exchange body 100. In other embodiments, the third heat insulation part and the fourth heat insulation part can also be omitted.

[0043] Optionally, the third insulation part is arranged between the first insulation part 220 and the second insulation part 230, and can close the side edge of the first insulation part 220 adjacent to the insulation body 210 and form an opening with the second insulation part 230; the fourth insulation part is arranged between the first insulation part 220 and the second insulation part 230, and can close the other side edge of the first insulation part 220 adjacent to the insulation body 210 and form an opening with the second insulation part 230.

[0044] See also Figure 3 and Figure 4 In one embodiment, the first insulation part 220 and the second insulation part 230 are integrally formed on the insulation body 210. By integrally forming the first insulation part 220 and the second insulation part 230 on the insulation body 210, the structural complexity of the insulation structure 200 can be simplified, and the stability of the first insulation part 220 and the second insulation part 230 on the insulation body 210 can be improved.

[0045] In other embodiments, the first insulation part 220 and / or the second insulation part 230 may be fixed to the insulation body 210 by welding, gluing, etc. In another embodiment, the first insulation part 220 and / or the second insulation part 230 may be installed on the insulation body 210 by snap-fitting, etc.

[0046] In one embodiment, the third insulation part and the fourth insulation part can be integrally formed on the insulation body 210 , which can simplify the structural complexity of the insulation structure 200 and improve the stability of the third insulation part and the fourth insulation part being arranged on the insulation body 210 .

[0047] In other embodiments, the third insulation part and / or the fourth insulation part may be fixed to the insulation body 210 by welding, gluing, etc. In another embodiment, the third insulation part and / or the fourth insulation part may be installed to the insulation body 210 by clamping, etc.

[0048] In this embodiment, the first heat insulating part 220 and the second heat insulating part 230 are both plate-shaped structures. Since the heat insulating structure 200 is sleeved on the heat exchange body 100, the first heat insulating part 220 and the second heat insulating part 230 are set as plate-shaped structures, which can avoid the gas water heater 10 from being too large due to the sleeve of the heat insulating structure 200, and at the same time, it is convenient for the first heat insulating part 220 and the second heat insulating part 230 to be attached to the heat exchange body 100, thereby improving the heat insulation effect.

[0049] In one embodiment, the heat insulation structure 200 is made of heat insulation cotton. The heat insulation cotton has the characteristics of high temperature resistance, non-flammability, low thermal conductivity, etc., and can effectively insulate the heat exchange body 100. In other embodiments, the heat insulation structure 200 can also be made of other heat insulation materials such as metal insulation materials and glass fibers. Alternatively, the heat insulation structure 200 can also be a vacuum plate structure.

[0050] In one embodiment, the wall thickness of the thermal insulation structure 200 may be 1 mm-6 mm. For example, the wall thickness of the thermal insulation structure 200 is 2 mm, 3 mm, 4 mm, etc. Of course, in other embodiments, the wall thickness of the thermal insulation structure 200 may also be set according to the actual installation space of the gas water heater 10, and the wall thickness of the thermal insulation structure 200 may also be less than 1 mm, as long as it can achieve the effect of thermal insulation.

[0051] In one embodiment, the heat insulation structure 200 is an axisymmetric structure, and the first heat insulation part 220 and the second heat insulation part 230 are symmetrically arranged relative to the symmetry axis. Since the heat insulation structure 200 is an axisymmetric structure, when the heat insulation structure 200 is sleeved on the heat exchange body 100, it is not necessary to distinguish the front and rear positions of the first heat insulation part 220 and the second heat insulation part 230, which further improves the installation efficiency of the heat insulation structure 200 on the heat exchange body 100.

[0052] See also Figure 2 and Figure 3 In one embodiment, the heat exchange body 100 includes a heat exchange box 120 and a coil 130, wherein the coil 130 is wound on the heat exchange box 120, and the coil 130 is located in the second heat insulation cavity 240. The heat exchange box 120 is formed as a storage cavity for high-temperature flue gas, and the flue gas can transfer heat to the heat exchange box 120. Since the coil 130 is wound on the heat exchange box 120, heat exchange of the coil 130 can be conveniently achieved through the heat exchange box 120. The coil 130 is conducive to increasing the heat absorption and heat transfer time, thereby improving the heat exchange efficiency. In one embodiment, the coil 130 can be wound around the heat exchange box 120 once, twice, three times, etc.

[0053] In one embodiment, a first limiting groove 222 is formed on one side of the first heat insulating portion 220 facing the second heat insulating portion 230, and the first limiting groove 222 is used for installing the coil 130 corresponding to the first heat insulating portion 220. By forming the first limiting groove 222, it is possible to ensure that the first heat insulating portion 220 is effectively attached to the surface of the heat exchange box 120 and the surface of the coil 130, further reduce the heat dissipation loss of the heat exchange box 120 and the coil 130, and reduce the influence of the heat exchange box 120 on the electronic components in the gas water heater 10. In this embodiment, the number of the first limiting grooves 222 is consistent with the number of turns of the coil 130, so that each turn of the coil 130 can be correspondingly arranged in a first limiting groove 222.

[0054] Specifically, the first limiting groove 222 is a semicircular strip groove, and the radius of the first limiting groove 222 is consistent with the radius of the outer wall of the coil 130, further improving the stability of the fit between the first heat insulation part 220 and the coil 130.

[0055] In one embodiment, a second limiting groove 232 is formed on one side of the second heat insulating portion 230 facing the first heat insulating portion 220, and the second limiting groove 232 is used for installing the coil 130 corresponding to the second heat insulating portion 230. By forming the second limiting groove 232, it is possible to ensure that the second heat insulating portion 230 is effectively fitted with the surface of the heat exchange box 120 and the surface of the coil 130, further reducing the heat dissipation loss of the heat exchange box 120 and the coil 130, and reducing the influence of the heat exchange box 120 on the electronic components in the gas water heater 10. In this embodiment, the number of the second limiting grooves 232 is consistent with the number of turns of the coil 130, so that each turn of the coil 130 can be correspondingly arranged in a second limiting groove 232.

[0056] Specifically, the second limiting groove 232 is a semicircular strip groove, and the radius of the second limiting groove 232 is consistent with the radius of the outer wall of the coil 130, further improving the stability of the fit between the second heat insulation part 230 and the coil 130.

[0057] In one embodiment, the heat exchange body 100 further includes a plurality of heat exchange fins 140 and a heat exchange tube 150. The plurality of heat exchange fins 140 are stacked and arranged on one end of the heat exchange box 120. One end of the heat exchange tube 150 is connected to the coil 130, and the other end passes through the plurality of stacked heat exchange fins 140. The heat exchange fins 140 are located in the first heat insulation cavity 212. Since the heat exchange fins 140 are arranged on one end of the heat exchange box 120, high-temperature flue gas can enter between the heat exchange fins 140. Since the other end of the heat exchange tube 150 passes through the heat exchange fins 140, the heat exchange tube 150 can be heated by the heat exchange fins 140, and the water in the heat exchange tube 150 can be heated. Since the heat exchange fins 140 are located in the first heat insulation cavity 212, the heat insulation body 210 can reduce the heat dissipation loss of the heat exchange fins 140.

[0058] In this embodiment, the size of the first heat insulation cavity 212 is consistent with the size of the plurality of stacked heat exchange fins 140, so that the heat insulation effect of the heat exchange fins 140 can be effectively achieved through the first heat insulation cavity 212. Specifically, the first heat insulation cavity 212 is a rectangular cavity.

[0059] In one embodiment, the heat exchange body 100 further includes a first water pipe 160 and a second water pipe 170, wherein the first water pipe 160 is connected to one end of the coil 130 away from the heat exchange tube 150, and the second water pipe 170 is connected to one end of the heat exchange tube 150 away from the coil 130, and the first water pipe 160 and the second water pipe 170 are respectively arranged on opposite sides of the heat exchange box 120, and the first water pipe 160 and the second water pipe 170 are both located between the first heat insulation part 220 and the second heat insulation part 230. The first water pipe 160 and the second water pipe 170 are arranged to facilitate water inlet and water outlet after heat exchange.

[0060] In this embodiment, the first water pipe 160 is a water inlet pipe, and the second water pipe 170 is a water outlet pipe. In other embodiments, the first water pipe 160 can also be set as a water outlet pipe, and the second water pipe 170 can be set as a water inlet pipe, as long as water inlet and water outlet after heat exchange can be achieved. At the same time, since the first water pipe 160 and the second water pipe 170 are located between the first insulation part 220 and the second insulation part 230, the first water pipe 160 and the second water pipe 170 are prevented from interfering with the arrangement of the first insulation part 220 and the second insulation part 230 in the heat exchange body 100.

[0061] See also Figure 2 and Figure 3 In this embodiment, the two opposite side walls of the heat insulation body 210 are provided with avoidance grooves 214, and the avoidance grooves 214 are connected to the first heat insulation cavity 212. The avoidance grooves 214 are used to avoid the bends of the heat exchange tubes 150, so as to improve the installation efficiency. Specifically, the avoidance grooves 214 are located between the first heat insulation part 220 and the second heat insulation part 230.

[0062] The above-mentioned heat insulation structure 200 can effectively reduce the surface heat dissipation loss of the heat exchange body 100 and improve the heat exchange efficiency. At the same time, it is beneficial to reduce the temperature inside the gas water heater 10, thereby reducing the damage to the controller and electronic components around the gas water heater 10, which is beneficial to extend the service life of the gas water heater 10.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. 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 present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A gas water heater, characterized in that: The heat exchange device comprises a heat exchange body and a heat insulation structure, wherein the heat insulation structure comprises a heat insulation body, a first heat insulation part and a second heat insulation part, wherein the heat insulation body forms a first heat insulation cavity, wherein the first heat insulation part is arranged on the heat insulation body, wherein the second heat insulation part is arranged on the heat insulation body, wherein the second heat insulation part is arranged opposite to the first heat insulation part, wherein the space between the first heat insulation part and the second heat insulation part forms a second heat insulation cavity, and wherein the second heat insulation cavity is connected to the first heat insulation cavity; The heat insulation structure is sleeved on the heat exchange body, so that one end of the heat exchange body is located in the first heat insulation cavity, and the other end of the heat exchange body is located in the second heat insulation cavity; The heat exchange body includes a heat exchange box and a coil, the coil is wound on the heat exchange box, the coil is located in the second insulation cavity, and a first limiting groove is formed on the side of the first insulation part facing the second insulation part, and the first limiting groove is used for installing the coil corresponding to the first insulation part, and the first limiting groove is a semicircular strip groove, and the radius of the first limiting groove is consistent with the radius of the outer wall of the coil; and / or a second limiting groove is formed on the side of the second insulation part facing the first insulation part, and the second limiting groove is used for installing the coil corresponding to the second insulation part, and the second limiting groove is a semicircular strip groove, and the radius of the second limiting groove is consistent with the radius of the outer wall of the coil.

2. The gas water heater according to claim 1, characterized in that: The heat insulation structure is an axisymmetric structure, and the first heat insulation part and the second heat insulation part are symmetrically arranged relative to the symmetry axis.

3. The gas water heater according to claim 2, characterized in that: The first heat insulating part and the second heat insulating part are both integrally formed on the heat insulating body.

4. The gas water heater according to claim 2, characterized in that: The first heat insulating portion and the second heat insulating portion are both plate-shaped structures.

5. The gas water heater according to any one of claims 1 to 4, characterized in that: It also includes a third insulation part and a fourth insulation part, both of which are arranged on the insulation body, and the fourth insulation part is arranged opposite to the third insulation part at an interval, and together with the first insulation part and the second insulation part, forms the second insulation cavity.

6. The gas water heater according to any one of claims 1 to 4, characterized in that: The cross-section of the second insulation cavity is larger than the cross-section of the first insulation cavity.

7. The gas water heater according to claim 1, characterized in that: The heat exchange body also includes a plurality of heat exchange fins and heat exchange tubes. The plurality of heat exchange fins are stacked and arranged on one end of the heat exchange box. One end of the heat exchange tube is connected to the coil, and the other end passes through the plurality of stacked heat exchange fins. The heat exchange fins are located in the first insulation cavity.

8. The gas water heater according to claim 7, characterized in that: The heat exchange body also includes a first water pipe and a second water pipe, the first water pipe is connected to an end of the coil away from the heat exchange tube, the second water pipe is connected to an end of the heat exchange tube away from the coil, the first water pipe and the second water pipe are respectively arranged on opposite sides of the heat exchange box, and the first water pipe and the second water pipe are both located between the first insulation part and the second insulation part.

9. The gas water heater according to claim 1, characterized in that: A first limiting portion is formed on the outer wall of the heat exchange body, and a second limiting portion is formed on the inner wall of the heat insulation structure, and the second limiting portion can abut against the first limiting portion.

10. The gas water heater according to claim 9, characterized in that: There are two second limiting parts, the first heat insulation part is bent relative to the heat insulation body to form a second limiting part, and the second heat insulation part is bent relative to the heat insulation body to form another second limiting part. The number of the first limiting parts corresponds to the number of the second limiting parts, and each of the second limiting parts can correspondingly abut against one of the first limiting parts.

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