Water tanks, water heaters and hot water systems

Abstract

This utility model discloses a water tank, a water heater, and a hot water system. The water tank includes an inner tank and a fixing assembly. The fixing assembly is used to fix a temperature sensor and a thermostat. The fixing assembly includes a bracket and a pressure applying mechanism. The pressure applying mechanism is connected to the inner tank and is used to apply pressure to the bracket so that the temperature sensor and the thermostat are respectively clamped between the bracket and the outer wall of the inner tank. The bracket includes a first clamping part and a second clamping part for clamping the temperature sensor and the thermostat. The pressure applying mechanism is located between the first clamping part and the second clamping part. This utility model fixes the temperature sensor and the thermostat to the outer wall of the inner tank through the fixing assembly, eliminating the need for a blind tube extending into the inner tank, thus simplifying the inner tank structure. Furthermore, by applying pressure to the bracket through the pressure applying mechanism to clamp the temperature sensor and the thermostat to the outer wall of the inner tank, only one bracket is needed to fix the two components, simplifying the installation structure, facilitating assembly, and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hot water treatment technology, and in particular to a water tank, a hot water machine and a hot water system. Background Technology

[0002] In related technologies, the current installation method for the temperature control element of water heaters involves inserting a blind tube from the surface of the inner tank into the inner tank, placing the temperature sensor inside the blind tube to detect the water temperature, and extending the signal line of the temperature sensor from the blind tube to the outside of the inner tank to connect with the thermostat. An additional fixing structure is also required on the outside to fix the thermostat. The assembly process is cumbersome and affects production efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a water tank in which a temperature sensor and a thermostat are clamped and fixed to the outer wall of the inner tank using a fixing assembly. This simplifies the inner tank structure and installation structure, facilitates production and assembly, and improves production efficiency.

[0004] This utility model also proposes a water heater having the above-mentioned water tank.

[0005] This utility model also proposes a hot water system having the above-mentioned hot water heater.

[0006] The water tank according to the first aspect of the present invention includes:

[0007] Inner liner; and

[0008] A fixing assembly for fixing a temperature sensor and a thermostat, the fixing assembly including a bracket and a pressure applying mechanism, the pressure applying mechanism being connected to the inner liner, the pressure applying mechanism being used to apply pressure to the bracket so that the temperature sensor and the thermostat are respectively clamped between the bracket and the outer wall of the inner liner; the bracket including a first clamping part and a second clamping part, one of the temperature sensor and the thermostat being clamped in the first clamping part, the other of the temperature sensor and the thermostat being clamped in the second clamping part, the pressure applying mechanism being located between the first clamping part and the second clamping part.

[0009] The water tank according to the embodiment of this utility model has at least the following beneficial effects:

[0010] The temperature sensor and thermostat are fixed to the outer wall of the inner liner using a fixing assembly, eliminating the need for blind tubes extending into the inner liner, simplifying the inner liner structure and facilitating its production. The fixing assembly includes a bracket and a pressure-applying mechanism. The pressure-applying mechanism applies pressure to the bracket, clamping the temperature sensor and thermostat between the bracket and the outer wall of the inner liner. Only one bracket is needed to fix both components, eliminating the need for additional fixing structures compared to related technologies, simplifying the installation structure and facilitating assembly. This simplified processing and assembly improves production efficiency. Furthermore, the bracket has a first clamping part and a second clamping part to hold the temperature sensor and thermostat. By placing the pressure-applying mechanism between the first and second clamping parts, the pressure applied by the bracket can act on the temperature sensor and thermostat from both sides, ensuring that both components receive sufficient clamping force and are securely clamped to the inner liner.

[0011] According to some embodiments of the present invention, the bracket is provided with a limiting hole, the pressure applying mechanism includes a limiting post, one end of the limiting post is connected to the inner liner, and the limiting post passes through the limiting hole.

[0012] According to some embodiments of the present invention, the outer peripheral surface of the limiting post is provided with a threaded portion, the pressure applying mechanism further includes a clamping member, the clamping member is provided with a threaded hole that mates with the threaded portion, the clamping member is threadedly engaged with the limiting post, and the clamping member abuts against the side of the bracket away from the inner liner.

[0013] According to some embodiments of the present invention, the bracket includes a first pressure plate and a second pressure plate connected to the first pressure plate, the first holding part is disposed on the first pressure plate, the second holding part is disposed on the second pressure plate, and the pressure applying mechanism applies pressure to the first pressure plate and / or the second pressure plate;

[0014] And / or, the water tank further includes an insulation layer and a separator, the separator being connected to the outer wall of the inner liner and surrounding the fixing assembly, the insulation layer being disposed around the separator and covering the outer wall of the inner liner.

[0015] According to some embodiments of the present invention, the first pressure plate includes a first plate body, the second pressure plate includes a second plate body, the pressure applying mechanism applies pressure to the first plate body, and the second plate body is inclined relative to the first plate body toward the side closer to the inner liner.

[0016] According to some embodiments of the present invention, the bracket further includes a connecting plate, which is connected between the first plate and the second plate, wherein the first plate and the second plate are located on opposite sides of the connecting plate.

[0017] Wherein, the included angle between the first plate and the connecting plate is the first included angle, and the included angle between the second plate and the connecting plate is the second included angle, satisfying that: the first included angle is greater than 90°, and the second included angle is less than or equal to 90°.

[0018] According to some embodiments of the present invention, the first pressure plate includes a first plate body and a first folded edge connected to the first plate body, and the first holding part is a first limiting groove disposed on the first folded edge, and the first folded edge is held on the periphery of the temperature sensor through the first limiting groove.

[0019] According to some embodiments of the present invention, the second pressure plate includes a second plate body, the thermostat is clamped between the second plate body and the outer wall of the inner liner, and the second holding part includes at least two second folded edges connected to the second plate body, a second limiting groove is formed between the at least two second folded edges, and the at least two second folded edges are held by the thermostat around the periphery through the second limiting groove;

[0020] Alternatively, the second pressure plate includes a second plate body, the second holding part is a third limiting groove that passes through the second plate body, the temperature controller includes a first part and a second part, the first part is clamped between the second plate body and the outer wall of the inner liner, the second part passes through the third limiting groove, and the second plate body is held by the third limiting groove on the periphery of the second part.

[0021] The water heater according to a second aspect of the present invention includes the water tank described in the above embodiments.

[0022] The water heater according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0023] The water tank using the first embodiment fixes the temperature sensor and thermostat to the outer wall of the inner tank via a fixing assembly, eliminating the need for a blind pipe extending into the inner tank, thus simplifying the inner tank structure and facilitating its production. The fixing assembly includes a bracket and a pressure-applying mechanism. The pressure-applying mechanism applies pressure to the bracket, clamping the temperature sensor and thermostat between the bracket and the outer wall of the inner tank. Fixing both components with only one bracket eliminates the need for additional fixing structures compared to related technologies, simplifying the installation structure and facilitating assembly. This simplifies processing and assembly, improving production efficiency. Furthermore, the bracket has a first clamping part and a second clamping part for clamping the temperature sensor and thermostat. By placing the pressure-applying mechanism between the first and second clamping parts, the pressure applied by the mechanism through the bracket can act on the temperature sensor and thermostat from both sides, ensuring sufficient clamping force on both components and guaranteeing that the temperature sensor and thermostat are securely clamped to the inner tank, ensuring the normal operation of the water heater.

[0024] A hot water system according to a third aspect of the present invention includes a heat source, a temperature control element, and a hot water machine as described in the above embodiments. The heat source is used to heat the water in the water tank of the hot water machine. The temperature control element is used to detect the water temperature in the water tank to trigger the heat source to start or stop. The temperature control element includes a temperature sensor and / or a thermostat.

[0025] The hot water system according to the third aspect embodiment of the present invention has at least the following beneficial effects:

[0026] In the water heater using the second embodiment, the water tank uses a fixing assembly to secure the temperature sensor and thermostat to the outer wall of the inner tank. This eliminates the need for a blind pipe extending into the inner tank, simplifying the inner tank structure and facilitating its production. The fixing assembly includes a bracket and a pressure-applying mechanism. The pressure-applying mechanism applies pressure to the bracket, clamping the temperature sensor and thermostat between the bracket and the outer wall of the inner tank. Only one bracket is needed to fix both components, eliminating the need for additional fixing structures compared to related technologies, simplifying the installation structure, and facilitating assembly. This simplifies processing and assembly, improving production efficiency. Furthermore, the bracket has a first clamping part and a second clamping part to hold the temperature sensor and thermostat. By placing the pressure-applying mechanism between the first and second clamping parts, the pressure applied by the mechanism through the bracket can act on the temperature sensor and thermostat from both sides, ensuring sufficient clamping force on both components and guaranteeing that the temperature sensor and thermostat are securely clamped to the inner tank, ensuring the normal operation of the hot water system.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a water tank according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0031] Figure 3 This is a schematic diagram of the structure of a water tank according to another embodiment of the present invention;

[0032] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0033] Figure 5 This is a schematic diagram of the structure of a bracket according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the bracket according to another embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of a temperature controller according to the present invention;

[0036] Figure 8 This is a first schematic diagram of the pressure application mechanism pressing against the temperature sensor and the thermostat in an embodiment of the present invention.

[0037] Icon labels:

[0038] Water tank 10; Inner liner 100; Fixing assembly 200; Bracket 210;

[0039] First pressure plate 211; First plate body 2111; Limiting hole 2111a; First folded edge 2112; First limiting groove 2112a;

[0040] Second pressure plate 212; second plate body 2121; third limiting groove 2121a; second folded edge 2122; second limiting groove 2122a; connecting plate 213;

[0041] Pressure applying mechanism 220; limiting post 221; clamping element 222; isolation element 300; accommodating space 310;

[0042] Temperature sensor 20; temperature controller 30; first part 31; second part 32. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0046] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0047] This application provides a water tank and a water heater using the water tank.

[0048] The water heater includes a water tank; please refer to [link / reference]. Figure 1 and Figure 3 The water tank 10 includes an outer shell (not shown in the figure) and an inner liner 100 disposed inside the outer shell. The inner liner 100 is used to store water, and an insulation layer (not shown in the figure) is disposed between the inner liner 100 and the outer shell.

[0049] The water heater may also include a heating mechanism (not shown in the figure) for heating the water inside the inner tank 100. The heat source for the heating mechanism can be an internal heat source built into the water heater or an external heat source. Alternatively, the water heater may include multiple heating mechanisms, with at least one heating mechanism having an internal heat source built into the water heater and at least one heating mechanism having an external heat source.

[0050] For example, in one embodiment, the water heater includes a first heating mechanism and a second heating mechanism. The first heating mechanism can be an electric heating element, which is electrically connected to the power module of the water heater. When the electric heating element is energized, it heats the water inside the inner tank 100. The second heating mechanism can include a water supply pipe, part of which extends into the inner tank 100 (the water in the water supply pipe is not connected to the water inside the inner tank 100). The water supply pipe is connected to an external heat source, which can be a solar water heater collector. The hot water generated by the collector can be delivered to the water supply pipe located inside the inner tank, and the heat is transferred to the water inside the inner tank 100 through the water supply pipe for heating.

[0051] Generally, water heaters are also equipped with temperature sensors to detect the water temperature in the tank, so that the heating mechanism can be controlled according to the water temperature. In related technologies, the current installation method of the water tank temperature sensor is to insert a blind tube from the surface of the inner tank into the inner tank, and place the temperature sensor in the blind tube to detect the water temperature. The blind tube increases the complexity of the inner tank structure, which is not convenient for manufacturing and processing. In addition, the signal wire of the temperature sensor needs to extend from the blind tube to the outside of the inner tank to connect with the thermostat. An additional fixing structure is required on the outside to fix the thermostat, making the assembly process cumbersome.

[0052] In this embodiment, the water tank 10 includes a fixing component 200, please refer to... Figure 2 and Figure 4 The fixing assembly 200 includes a bracket 210 and a pressure applying mechanism 220. The pressure applying mechanism 220 is connected to the inner liner 100 and is used to apply pressure to the bracket 210 so that the temperature sensor 20 and the thermostat 30 are respectively clamped between the bracket 210 and the outer wall of the inner liner 100. The bracket 210 includes a first clamping part and a second clamping part. One of the temperature sensor 20 and the thermostat 30 is clamped in the first clamping part, and the other is clamped in the second clamping part. The pressure applying mechanism 220 is located between the first clamping part and the second clamping part.

[0053] In this embodiment, the temperature sensor 20 and the thermostat 30 are fixed to the outer wall of the inner liner 100 using a fixing component 200, eliminating the need for a blind tube extending into the inner liner 100. This simplifies the structure of the inner liner 100 and facilitates its production and processing. The fixing component 200 includes a bracket 210 and a pressure applying mechanism 220. The pressure applying mechanism 220 applies pressure to the bracket 210, clamping the temperature sensor 20 and the thermostat 30 between the bracket 210 and the outer wall of the inner liner 100. Only one bracket 210 is needed to fix the two components, eliminating the need for additional fixing structures compared to related technologies, thus facilitating assembly. This simplified processing and assembly, thereby improving production efficiency.

[0054] Furthermore, the bracket 210 of this application is provided with a first clamping part and a second clamping part to clamp the temperature sensor 20 and the thermostat 30. By placing the pressure applying mechanism 220 between the first clamping part and the second clamping part, the temperature sensor 20 and the thermostat 30 are respectively clamped on both sides of the pressure applying mechanism 220. The pressure applied by the pressure applying mechanism 220 through the bracket 210 can act on the temperature sensor 20 and the thermostat 30 from both sides, so that both components are subjected to sufficient clamping force, ensuring that the temperature sensor 20 and the thermostat 30 can be firmly clamped on the inner liner 100.

[0055] It should be noted that the bracket 210 is spaced apart from the outer wall of the inner liner 100, that is, the bracket 210 does not contact the outer wall of the inner liner 100, so as to better ensure that the temperature sensor 20 and the thermostat 30 can be pressed tightly against the outer wall of the inner liner 100.

[0056] In some embodiments, the heating mechanism heats the water under the action of a heat source. The temperature sensor 20 and the thermostat 30 can be used to obtain the water temperature of the water tank 10, which serves as the basis for determining whether to trigger the start or stop of the heat source and as the condition for triggering high-temperature protection. In one embodiment, the temperature sensor 20 is used to trigger the start or stop of the heat source based on the detected water temperature to regulate the water temperature of the water tank 10. The thermostat 30 is used to trigger the shut-off of the heat source when the water temperature is detected to be too high. The thermostat 30 also serves as a high-temperature protection function to prevent abnormally high water temperature in the water tank 10 due to failure of the temperature sensor 20 or other abnormalities.

[0057] In one embodiment, the thermostat 30 is a snap-action thermostat, which is a thermostat that uses a bimetallic strip as a temperature sensing component. When it detects that the temperature of the water tank 10 is abnormally high, it disconnects the circuit to achieve high temperature protection.

[0058] In one embodiment, please refer to Figure 2 , Figure 4 And refer to Figure 5 and Figure 6 The bracket 210 is provided with a limiting hole 2111a, and the pressure applying mechanism 220 includes a limiting post 221. One end of the limiting post 221 is connected to the inner liner 100, and the limiting post 221 passes through the limiting hole 2111a.

[0059] By setting a limiting post 221 that passes through the limiting hole 2111a of the bracket 210, the limiting post 221 can restrict the lateral movement of the bracket 210 (lateral movement refers to the direction perpendicular to the extension direction of the limiting post 221), preventing the bracket 210 from undergoing lateral displacement. This facilitates the stable clamping of the temperature sensor 20 and the thermostat 30 between the bracket 210 and the inner liner 100. The limiting post 221 and the limiting hole 2111a are in clearance fit to allow the limiting post 221 to pass smoothly through the limiting hole 2111a.

[0060] There are several ways to connect the limiting post 221 to the inner liner 100. To ensure a firm connection between the limiting post 221 and the inner liner 100, in one embodiment, one end of the limiting post 221 can be fixed to the outer wall of the inner liner 100 by welding. In another embodiment, the outer wall of the inner liner 100 can be provided with a connecting hole, and one end of the limiting post 221 can be inserted into the connecting hole and have an interference fit with the connecting hole; alternatively, one end of the limiting post 221 can be threaded into the connecting hole.

[0061] In some embodiments, the outer peripheral surface of the limiting post 221 is provided with a threaded portion, and the pressure applying mechanism 220 further includes a clamping member 222. The clamping member 222 is provided with a threaded hole that mates with the threaded portion. The clamping member 222 is threadedly engaged with the limiting post 221, and the clamping member 222 abuts against the side of the bracket 210 opposite to the inner liner 100. In one embodiment, the limiting post 221 can be a stud, and the clamping member 222 can be a nut.

[0062] Specifically, the clamping member 222 is rotated along the thread direction until it abuts against the side of the bracket 210 away from the inner liner 100. The locking force generated by the engagement of the threaded part and the threaded hole acts on the bracket 210, ensuring that the bracket 210 and the two components are subjected to sufficient clamping force, which guarantees that the bracket 210 firmly presses the two components against the outer wall of the inner liner 100. It should be noted that, for ease of explanation, the two components mentioned in this article refer to the temperature sensor 20 and the thermostat 30.

[0063] In some embodiments, please refer to Figure 5 and Figure 6 The bracket 210 includes a first pressure plate 211 and a second pressure plate 212 connected to the first pressure plate 211. A first holding part is disposed on the first pressure plate 211, and a second holding part is disposed on the second pressure plate 212. A pressure applying mechanism 220 applies pressure to the first pressure plate 211 and / or the second pressure plate 212. One of the temperature sensor 20 and the thermostat 30 is clamped between the first pressure plate 211 and the inner liner 100, and the other of the temperature sensor 20 and the thermostat 30 is clamped between the second pressure plate 212 and the inner liner 100.

[0064] It is easy to understand that the heights of the temperature sensor 20 and the thermostat 30 may differ. By setting the bracket 210 to include a first pressure plate 211 and a second pressure plate 212, the relative height or angle of the first pressure plate 211 and the second pressure plate 212 can be set according to the heights of the temperature sensor 20 and the thermostat 30, so that the two pressure plates can effectively contact the two components respectively, so as to ensure that the two components are stably pressed against the outer wall of the inner liner 100 by only one bracket 210.

[0065] One end of the first pressure plate 211 can be directly connected to the second pressure plate 212, or a connecting plate 213 can be provided between the first pressure plate 211 and the second pressure plate 212 to achieve indirect connection. For example, when the temperature sensor 20 and the temperature controller 30 are at the same height or have a very small height difference, the first pressure plate 211 and the second pressure plate 212 can be directly connected. For another example, see reference... Figure 5 As shown, when the temperature sensor 20 and the temperature controller 30 have a large height difference, there is a corresponding height difference between the first pressure plate 211 and the second pressure plate 212. At this time, a connecting structure is provided between the first pressure plate 211 and the second pressure plate 212 for connection.

[0066] In one embodiment, to simplify the overall structure of the pressure applying mechanism 220, the pressure applying mechanism 220 applies pressure to the first pressure plate 211 or the second pressure plate 212. Taking the pressure applying mechanism 220 applying pressure to the first pressure plate 211 as an example, a limiting hole 2111a is correspondingly provided on the first pressure plate 211.

[0067] In some embodiments, the first pressure plate 211 includes a first plate body 2111, the second pressure plate 212 includes a second plate body 2121, the pressure applying mechanism 220 applies pressure to the first plate body 2111, and the second plate body 2121 is inclined relative to the first plate body 2111 toward the side closer to the inner liner 100.

[0068] Taking the temperature sensor 20 located between the first pressure plate 211 and the inner liner 100, and the thermostat 30 located between the second pressure plate 212 and the inner liner 100 as an example, the temperature sensor 20 and the thermostat 30 are generally arranged along the circumference of the inner liner 100. Since the inner liner 100 is designed as a cylindrical body and the outer wall surface of the inner liner 100 is curved, by tilting the first plate 2111 and the second plate 2121, the tilt angle of the first plate 2111 and the second plate 2121 can be designed according to the curvature of the outer wall of the inner liner 100, so that the first pressure plate 211 can effectively contact the temperature sensor 20 and the second pressure plate 212 can effectively contact the thermostat 30, which is beneficial for the bracket 210 to stably press the two components onto the outer wall of the inner liner 100. Furthermore, since the pressure applying mechanism 220 applies pressure to the first plate 2111, the second plate 2121 is not directly subjected to the force of the pressure applying mechanism 220. Instead, the pressure is transmitted to the second plate 2121 through the first plate 2111. In this embodiment, by tilting the second plate 2121 relative to the first plate 2111 towards the side closer to the inner liner 100, the pressure transmitted to the second plate 2121 through the first plate 2111 can be better applied to the thermostat 30. In addition, the bracket 210 can be made by bending process. When pressure is applied to the second plate 2121, and the thermostat 30 is clamped between the second pressure plate 212 and the outer wall of the inner liner 100, the second plate 2121 will bend and deform (or tend to bend and deform) to the side away from the inner liner 100. Based on the springback effect when the bent part is deformed, the second plate 2121 will give the thermostat 30 a springback force. The springback force combined with the pressure applied to the thermostat 30 can better press the thermostat 30, further ensuring that the bracket 210 can stably press the thermostat 30 against the outer wall of the inner liner 100.

[0069] Please refer to Figure 5 In some embodiments, the bracket 210 further includes a connecting plate 213, which connects the first plate 2111 and the second plate 2121. The first plate 2111 and the second plate 2121 are located on opposite sides of the connecting plate 213. The included angle between the first plate 2111 and the connecting plate 213 is a first included angle α, and the included angle between the second plate 2121 and the connecting plate 213 is a second included angle β, satisfying that: the first included angle α is greater than 90°, and the second included angle β is less than or equal to 90°.

[0070] To illustrate this more clearly, let's take an example where the contact surfaces of the temperature sensor 20, the thermostat 30, and the inner liner 100 are flat. Please refer to [link / reference needed]. Figure 8 Temperature sensor 20 is located between first plate 2111 and inner liner 100, and thermostat 30 is located between second plate 2121 and inner liner 100. By setting the angle between first plate 2111 and connecting plate 213 to be greater than 90°, and setting the angle between second plate 2121 and connecting plate 213 to be less than or equal to 90°, when pressure mechanism 220 applies pressure to first plate 2111 and the pressure is transmitted to second plate 2121 through connecting plate 213, since second plate 2121 is inclined downward relative to outer wall of inner liner 100, second plate 2121 has a downward pressure on thermostat 30, which can improve the pressing effect on thermostat 30. Even without the direct action of pressure mechanism 220, second plate 2121 can ensure that thermostat 30 is stably pressed against outer wall of inner liner 100.

[0071] In one embodiment, the first retaining part is used to retain the temperature sensor 20, and the second retaining part is used to retain the temperature controller 30. Please refer to... Figure 5 and Figure 6 The first pressure plate 211 also includes a first folded edge 2112 connected to the first plate body 2111. The first holding part is a first limiting groove 2112a disposed on the first folded edge 2112. The first folded edge 2112 is held on the periphery of the temperature sensor 20 by the first limiting groove 2112a. The first limiting groove 2112a is designed according to the shape of the temperature sensor 20. The first limiting groove 2112a can limit the temperature sensor 20, prevent the temperature sensor 20 from displacing under pressure, and ensure that the temperature sensor 20 is firmly pressed against the outer wall of the inner liner 100.

[0072] By designing the first pressure plate 211 to include a first plate body 2111 and a first folded edge 2112 connected to the first plate body 2111, the strength of the first pressure plate 211 can be improved, the deformation resistance of the first pressure plate 211 can be improved, and the deformation of the first pressure plate 211 can be prevented when subjected to pressure.

[0073] In one embodiment, please continue to refer to Figure 5 The second pressure plate 212 includes a second plate body 2121. The thermostat 30 is clamped between the second plate body 2121 and the outer wall of the inner liner 100. The second holding part includes at least two second folded edges 2122 connected to the second plate body 2121. A second limiting groove 2122a is formed between the at least two second folded edges 2122. The at least two second folded edges 2122 are held by the second limiting groove 2122a around the thermostat 30.

[0074] By setting a second folded edge 2122 to form a second limiting groove 2122a, the thermostat 30 is limited on its periphery, thus limiting the thermostat 30. Combined with the clamping force provided by the pressure applying mechanism 220, the thermostat 30 can be firmly pressed against the outer wall of the inner liner 100. The specific number of second folded edges 2122 can be determined according to the specific shape of the thermostat 30 to limit the thermostat 30 in multiple directions. Similarly, the second pressure plate 212 is designed to include a second plate body 2121 and a second folded edge 2122 connected to the second plate body 2121, which improves the strength of the second pressure plate 212 and enhances its resistance to deformation, preventing deformation of the second pressure plate 212 under pressure.

[0075] Please combine Figure 4 And refer to Figure 6 and Figure 7 Some thermostats 30 are designed in a stepped shaft shape, including a first part 31 and a second part 32 arranged axially. The second part 32 is provided with a terminal. To ensure a stable clamping of the thermostat 30 while avoiding the terminal, in some embodiments of this application, the second pressure plate 212 includes a second plate body 2121, and the second holding part includes a third limiting groove 2121a that passes through the second plate body 2121. The first part 31 of the thermostat 30 is clamped between the second plate body 2121 and the outer wall of the inner liner, and the second part 32 passes through the third limiting groove 2121a. The second plate body 2121 is held by the third limiting groove 2121a around the second part 32. It can be understood that the shape of the third limiting groove 2121a can be designed to fit the contour shape of the second part 32 of the thermostat 30.

[0076] In this embodiment, by designing the second holding part as a third limiting groove 2121a that passes through the second plate 2121, the second part 32 of the thermostat 30 passes through the third limiting groove 2121a, and the second plate 2121 is held by the third limiting groove 2121a around the second part 32. This not only enables stable and reliable clamping of the thermostat 30, but also achieves avoidance of the wiring terminal. That is, the third limiting groove 2121a simultaneously achieves the functions of holding and avoiding, simplifying the overall structure of the bracket 210.

[0077] Please refer to Figure 2 and Figure 4 The water tank 10 also includes a spacer 300, which is connected to the outer wall of the inner liner 100 and surrounds the fixing assembly 200. An insulation layer is disposed around the spacer 300. The spacer 300 can be bonded to the outer wall of the inner liner 100.

[0078] Understandably, insulation layers are generally formed through foaming. In this embodiment, by setting up an isolator 300, which can be designed as a ring, the isolator 300 can block the foaming liquid on its outside during the foaming process of the water tank 10. Thus, the isolator 300 and the inner liner 100 can form a receiving space 310 that is separated from the insulation layer. The temperature sensor 20 and the thermostat 30 can be installed in this receiving space 310 after the water tank 10 has completed foaming. Moreover, installing the temperature sensor 20 and the thermostat 30 in the receiving space 310 formed by the isolator 300 also facilitates the subsequent maintenance or replacement of these two components. Of course, in some embodiments, the temperature sensor 20 and the thermostat 30 can also be installed in the receiving space 310 before the water tank 10 foams. The isolator 300 can isolate the foaming liquid on the outside, preventing the extrusion force generated during the foaming process from causing displacement or deformation damage to the temperature sensor 20, the thermostat 30 and the bracket 210, and avoiding affecting the normal detection of the temperature sensor 20 and the thermostat 30.

[0079] This application also provides a hot water system, which includes a heat source, a temperature control element, and a water heater as described in any of the above embodiments. The heat source is used to heat the water in the water tank 10 of the water heater, and the temperature control element is used to detect the water temperature in the water tank 10 to trigger the heat source to start or stop. The heat source can be an external heat source to the water heater, and the temperature control element can include the temperature sensor 20 and / or the temperature controller 30 described above.

[0080] Understandably, the water heater itself can be equipped with an internal heat source. By linking the water heater with an external heat source, the water in the water tank 10 can be heated by both the external and internal heat sources. Alternatively, depending on the current usage environment, one of the more suitable heat sources can be selected for heating, thus achieving efficient heating of the water heater.

[0081] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A water tank, characterized in that, include: Inner liner; and A fixing assembly for fixing a temperature sensor and a thermostat, the fixing assembly including a bracket and a pressure applying mechanism, the pressure applying mechanism being connected to the inner liner, the pressure applying mechanism being used to apply pressure to the bracket so that the temperature sensor and the thermostat are respectively clamped between the bracket and the outer wall of the inner liner; the bracket including a first clamping part and a second clamping part, one of the temperature sensor and the thermostat being clamped in the first clamping part, the other of the temperature sensor and the thermostat being clamped in the second clamping part, the pressure applying mechanism being located between the first clamping part and the second clamping part.

2. The water tank according to claim 1, characterized in that, The bracket is provided with a limiting hole, and the pressure applying mechanism includes a limiting post. One end of the limiting post is connected to the inner liner, and the limiting post passes through the limiting hole.

3. The water tank according to claim 2, characterized in that, The outer circumferential surface of the limiting post is provided with a threaded portion, and the pressure applying mechanism also includes a clamping member. The clamping member is provided with a threaded hole that mates with the threaded portion. The clamping member is threadedly engaged with the limiting post, and the clamping member abuts against the side of the bracket away from the inner liner.

4. The water tank according to any one of claims 1 to 3, characterized in that, The bracket includes a first pressure plate and a second pressure plate connected to the first pressure plate, the first clamping part is disposed on the first pressure plate, the second clamping part is disposed on the second pressure plate, and the pressure applying mechanism applies pressure to the first pressure plate and / or the second pressure plate; And / or, the water tank further includes an insulation layer and a separator, the separator being connected to the outer wall of the inner liner and surrounding the fixing assembly, the insulation layer being disposed around the separator and covering the outer wall of the inner liner.

5. The water tank according to claim 4, characterized in that, The first pressure plate includes a first plate body, the second pressure plate includes a second plate body, the pressure applying mechanism applies pressure to the first plate body, and the second plate body is inclined relative to the first plate body toward the side closer to the inner liner.

6. The water tank according to claim 5, characterized in that, The bracket also includes a connecting plate, which is connected between the first plate and the second plate, with the first plate and the second plate located on opposite sides of the connecting plate. Wherein, the included angle between the first plate and the connecting plate is the first included angle, and the included angle between the second plate and the connecting plate is the second included angle, satisfying that: the first included angle is greater than 90°, and the second included angle is less than or equal to 90°.

7. The water tank according to claim 4, characterized in that, The first pressure plate includes a first plate body and a first folded edge connected to the first plate body. The first holding part is a first limiting groove disposed on the first folded edge, and the first folded edge is held to the periphery of the temperature sensor through the first limiting groove.

8. The water tank according to claim 4, characterized in that, The second pressure plate includes a second plate body, the thermostat is clamped between the second plate body and the outer wall of the inner liner, and the second holding part includes at least two second folded edges connected to the second plate body, a second limiting groove is formed between the at least two second folded edges, and the at least two second folded edges are held by the thermostat around the periphery through the second limiting groove; Alternatively, the second pressure plate includes a second plate body, the second holding part is a third limiting groove that passes through the second plate body, the temperature controller includes a first part and a second part, the first part is clamped between the second plate body and the outer wall of the inner liner, the second part passes through the third limiting groove, and the second plate body is held by the third limiting groove on the periphery of the second part.

9. A water heater, characterized in that, Includes the water tank as described in any one of claims 1 to 8.

10. A hot water system, characterized in that, The device includes a heat source, a temperature control element, and the water heater as described in claim 9. The heat source is used to heat the water in the water tank of the water heater. The temperature control element is used to detect the water temperature in the water tank to trigger the heat source to start or stop. The temperature control element includes a temperature sensor and / or a temperature controller.

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