Hot tank and water supply device

By incorporating a hollow structure and an exhaust structure within the hot tank body, along with a sealing structure, the problem of the exhaust pipe failing to automatically seal when the traditional hot tank is tilted is solved. This achieves safe sealing in the tilted state and smooth airflow discharge in the normal state, thereby improving the safety and reliability of the equipment.

CN223741005UActive Publication Date: 2025-12-30GUANGDONG LIZI TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520256986.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-17
Publication Date
2025-12-30
Estimated Expiration
2035-02-17

AI Technical Summary

Technical Problem

Traditional heat exchange tanks cannot automatically seal their exhaust pipes when tilted, which may cause the high-temperature heat exchange medium to be accidentally discharged, posing a safety risk.

Method used

A hollow structure is designed inside the hot tank body, with an exhaust structure at the top and a sealing structure. Under normal conditions, airflow is allowed to escape, and when tilted, the sealing structure automatically seals the exhaust structure to prevent media leakage.

Benefits of technology

It effectively prevents leakage of high-temperature media, improves safety and reliability, simplifies the use and maintenance process, and ensures safety and reliability under various conditions.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223741005U_ABST
    Figure CN223741005U_ABST
Patent Text Reader

Abstract

The utility model discloses a hot tank and a water supply device thereof.The hot tank comprises a hot tank body, an inner cavity of a hollow structure is formed in the hot tank body, and the inner cavity is used for storing a heat exchange medium; an exhaust structure is arranged at the top of the hot tank body; the blocking structure is arranged at the exhaust structure, when the hot tank body is in a normal state, a gap exists between the blocking structure and the exhaust structure, and airflow in the hot tank body can be exhausted through the exhaust structure; when the hot tank body is in the inclined state, the blocking structure moves to the exhaust structure and blocks the exhaust structure, so that a heat exchange medium is prevented from entering the exhaust structure, and the problem that when a traditional hot tank body inclines, an exhaust pipe cannot be automatically blocked, and safety risks are caused is solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of drinking water equipment technology, and in particular to a hot water tank and water supply device. Background Technology

[0002] In the development of modern drinking water equipment, the heating tank body, as a core component ensuring the instant heating and supply of drinking water, directly affects user experience and equipment reliability in terms of performance and safety. The core working principle of traditional heating tank body design lies in the fact that the tank body is filled with a specific heat exchange medium. This medium (such as heat transfer oil or other highly efficient heat transfer liquids) is heated to a predetermined temperature by the heating system. Subsequently, this high-temperature heat exchange medium flows into the heat exchanger through a precisely designed piping system, exchanging heat with the externally introduced drinking water, thereby achieving rapid heating of the drinking water.

[0003] This design not only significantly improves the heating efficiency of hot water, ensuring users can quickly obtain drinking water at the required temperature, but also achieves uniform and efficient heat transfer from the heat exchange medium to the drinking water by fully utilizing the principle of heat conduction. However, traditional hot water tanks pose safety hazards when faced with abnormal situations such as tilting or tipping over; in particular, when the hot water tank is tilted, its internal vent pipe often fails to automatically seal, causing the high-temperature heat exchange medium to be accidentally discharged through the vent pipe, which may not only cause safety risks such as scalding, but also pollute the surrounding environment.

[0004] Therefore, the inventors have proposed a hot water tank and water supply device to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of this, this application provides a hot tank to solve the problem that the exhaust pipe of a traditional hot tank cannot be automatically sealed when tilted, which may lead to the accidental discharge of high-temperature heat exchange medium and cause safety risks; the second objective is to provide a water supply device. To achieve one or more or all of the above objectives or other objectives, on the one hand, this application provides a hot tank, including a hot tank body, wherein a hollow inner cavity is formed within the hot tank body, the inner cavity being used to store the heat exchange medium;

[0006] The top of the hot tank body is provided with an exhaust structure;

[0007] A sealing structure is disposed at the exhaust structure.

[0008] When the hot tank body is in normal condition, there is a gap between the sealing structure and the exhaust structure, which allows the airflow inside the hot tank body to be discharged through the exhaust structure;

[0009] When the heat tank body is in the inclined state, the blocking structure is moved to the exhaust structure and blocks the exhaust structure to limit the heat exchange medium from entering the exhaust structure.

[0010] Further, the blocking structure comprises a floating member, when the heat tank body is in the inclined state, the heat exchange medium acts on the floating member to make the floating member block the exhaust structure;

[0011] Further, the blocking structure comprises a movable blocking member, the movable blocking member is arranged in an exhaust passage of the exhaust structure, when the heat exchange medium acts on the movable blocking member, the movable blocking member rotates or moves to block the exhaust passage.

[0012] Further, one side of the movable blocking member is rotationally connected to the exhaust passage, the other side of the movable blocking member is deflected away from the exhaust passage and keeps a gap with the exhaust passage;

[0013] When the heat tank body is inclined, the heat exchange medium acts on the movable blocking member to deflect the movable blocking member to the exhaust passage to block the exhaust passage.

[0014] Further, the exhaust structure is arranged on the top cover.

[0015] According to the above technical solution, the exhaust structure is arranged on the top cover, which makes the position of the exhaust structure more reasonable, facilitates the exhaust of the airflow in the heat tank body, and achieves the purpose of balancing the air pressure.

[0016] Further, the longitudinal section of the exhaust structure is in a structure of small at the top and large at the bottom;

[0017] The blocking structure comprises a first blocking member, the first blocking member comprises a first water-permeable cover and a first floating ball, the first water-permeable cover is fixedly installed at the heat tank body close to the exhaust structure, the first floating ball is arranged in the first water-permeable cover, and the heat exchange medium can drive the first floating ball to block the exhaust structure.

[0018] Further, the blocking structure is a second blocking member;

[0019] The second blocking member comprises a second water-permeable cover and a second floating ball, the second floating ball is arranged in the second water-permeable cover, and the second water-permeable cover is fixedly installed at the heat tank body close to the exhaust structure.

[0020] Further, the second water-permeable cover comprises a tapered portion and a water-permeable portion, the water-permeable portion is fixed on the tapered portion, the cross section of the tapered portion is in a tapered structure, the tapered portion is fixed at the heat tank body close to the exhaust structure, the second floating ball is arranged in the water-permeable portion, and the second floating ball can block the tapered portion.

[0021] In another aspect, the application also provides a water supply device, characterized in that comprising a shell and a heat exchange assembly, the heat exchange assembly is arranged in the shell;

[0022] The heat exchange assembly comprises a heat exchanger;

[0023] Further comprising a heat tank as described above; the heat tank is connected with the heat exchanger.

[0024] The implementation of the application will have the following beneficial effects:

[0025] The application sets the heat tank body as a hollow structure for storing heat exchange medium, which is used for heat exchange of drinking water after being heated, so as to quickly heat the drinking water and meet the demand of the drinking water equipment for hot water.

[0026] The application specially sets an exhaust structure on the top of the heat tank body, which is used for smoothly discharging internal airflow under normal state and maintaining pressure balance. In order to realize the plugging function, the plugging structure is installed at the exhaust structure. Under normal posture, the plugging structure and the exhaust structure maintain a small gap to ensure that the internal airflow of the heat tank body is discharged freely. However, once the heat tank body is inclined, the plugging structure is automatically moved to the position of the exhaust structure under the action of gravity and / or buoyancy and closely adheres to it, effectively preventing the heat exchange medium from entering the exhaust structure when it is inclined, avoiding accidental leakage of high-temperature medium, eliminating safety hazards, not only automatically plugging according to the inclination state of the heat tank, but also automatically restoring the gap state after the heat tank body returns to normal, ensuring smooth discharge of airflow, greatly simplifying the use and maintenance process of the user, without manual intervention, solving the problem that the exhaust pipe of the traditional heat tank body cannot be automatically plugged when it is inclined, causing the high-temperature heat exchange medium to be accidentally discharged and causing safety risks. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] Among them:

[0029] Figure 1 It is a partial disassembly structure schematic view of the heat tank and the water supply device of the utility model;

[0030] Figure 2 It is a disassembly structure schematic view of the heat tank of the utility model;

[0031] Figure 3It is partial section structure schematic view of the first plugging piece in the hot pot of the utility model.

[0032] Figure 4 It is partial section structure schematic view of the second plugging piece of the utility model.

[0033] Figure 5 It is whole structure schematic view of the water supply device of the utility model

[0034] Figure 6 It is structure schematic view of the water supply device after splitting of the utility model.

[0035] Figure 7 It is heat exchange assembly structure schematic view of the water supply device of the utility model.

[0036] Figure 8 It is water path schematic view of the water supply device of the utility model

[0037] Among them, the hot pot body 1, the heat exchange cylinder 11, the top cover 12, the bottom cover 13, the exhaust structure 2, the first plugging piece 3, the first water-permeable cover 31, the first floating ball 32, the second plugging piece 4, the second water-permeable cover 41, the conical part 411, the water-permeable part 412, the second floating ball 42, the shell 5, the heat exchange assembly 6, the heat exchanger 61, the drinking water inlet interface 611, the drinking water outlet interface 612, the heat exchange water inlet interface 613, the heat exchange water outlet interface 614, the first pipeline 71, the second pipeline 72, the third pipeline 73, the fourth pipeline 81, the fifth pipeline 82, the sixth pipeline 83, the water pump 84, the heater 9, the square tank water outlet 110, the square tank water inlet 111. Specific implementation

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] The embodiment provides a hot pot, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , comprising a hot pot body 1, a hollow cavity is formed in the hot pot body 1, the cavity is used for storing heat exchange medium, the heat exchange medium is used for heat exchange of drinking water after being heated, so as to quickly heat the drinking water, so as to meet the demand of drinking water equipment for hot water.

[0040] As shown in Figure 1 and Figure 2As shown, the top of the heat tank body 1 is provided with an exhaust structure 2, and a blocking structure is arranged at the exhaust structure 2; when the heat tank body 1 is in a normal state, there is a gap between the blocking structure and the exhaust structure 2, so that the airflow in the heat tank body 1 can be discharged through the exhaust structure 2; when the heat tank body 1 is in an inclined state, the blocking structure blocks the exhaust structure 2 to limit the heat exchange medium from entering the exhaust structure 2. According to the above technical solution, the exhaust structure 2 is arranged to allow the airflow in the heat tank body 1 to be smoothly discharged through the exhaust structure 2 in the normal state, so as to maintain the pressure balance in the heat tank body 1; in order to realize the blocking function, a blocking structure is designed, which is ingeniously arranged at the exhaust structure 2; in the normal state, the blocking structure and the exhaust structure 2 maintain a certain gap, so that the airflow in the heat tank body 1 can pass through the gap from the exhaust structure 2 without any obstruction; however, when the heat tank body 1 is in an inclined state, under the action of gravity and / or buoyancy, the blocking structure will automatically move to the position of the exhaust structure 2 and adhere to the position of the exhaust structure 2, thereby achieving the blocking of the exhaust structure 2, which can limit the heat exchange medium from entering the exhaust structure 2 in the inclined state, thereby avoiding the accidental leakage of high-temperature heat exchange medium, and eliminating the possible safety hazard.

[0041] It is worth mentioning that this blocking structure not only can automatically block according to the inclined state of the heat tank body 1, but also can automatically restore to the state of maintaining a gap with the exhaust structure 2 after the heat tank body 1 returns to the normal state, so as to ensure that the airflow in the heat tank body 1 can be smoothly discharged, which not only improves the safety and reliability of the heat tank, but also greatly simplifies the use and maintenance process of the user, and has compact structure and strong practicability.

[0042] Specifically, the blocking structure can include a floating element, and when the heat tank body 1 is in an inclined state, the heat exchange medium acts on the floating element to block the exhaust structure 2.

[0043] Alternatively, the blocking structure includes a movable blocking element, and the movable blocking element is arranged in an exhaust passage of the exhaust structure 2, and when the heat exchange medium acts on the movable blocking element, the movable blocking element rotates or moves to block the exhaust passage. The movable blocking element can be a rubber pad, for example, one side of the movable blocking element can be rotatably connected to the exhaust passage, and the other side of the movable blocking element can be deflected by a certain angle towards the air inlet end of the exhaust passage. That is, in the normal state, when the heat tank body 1 is upright, the movable blocking element can be inclined by a certain angle (for example, an angle within 15 degrees) relative to the horizontal plane, and there is a gap between the movable blocking element and the exhaust passage. When the heat tank body 1 is inclined, the heat exchange medium flows to the movable blocking element and acts on the bottom surface of the movable blocking element, and the movable blocking element rotates towards the outlet end of the exhaust passage to completely block the exhaust passage.

[0044] As a preferred embodiment, as Figure 2As shown, the heat tank body 1 comprises a heat exchange cylinder 11, a top cover 12 and a bottom cover 13, the top cover 12 and the bottom cover 13 are fixedly arranged at two ends of the heat exchange cylinder 11 respectively, and the top cover 12, the bottom cover 13 and the heat exchange cylinder 11 jointly enclose an inner cavity.

[0045] As a preferred embodiment, the exhaust structure 2 can be an exhaust pipe or an exhaust hole, when the exhaust structure 2 is an exhaust hole, the exhaust hole is arranged on the top cover 12, which is convenient for the exhaust of the airflow inside the heat tank body 1, and achieves the purpose of balancing the air pressure.

[0046] In an embodiment, as shown in the drawings, Figure 3 the longitudinal section of the exhaust structure 2 is in a structure of small at the top and large at the bottom; in this embodiment, the plugging structure is a first plugging member 3, the first plugging member 3 comprises a first water-permeable cover 31 and a first floating ball 32, the first water-permeable cover 31 is fixedly installed at the position close to the exhaust structure 2 of the heat tank body 1, and the first floating ball 32 is arranged in the first water-permeable cover 31, and the heat exchange medium can drive the first floating ball 32 to plug the exhaust structure 2. In this embodiment, the longitudinal section of the exhaust structure 2 is optimized to be small at the top and large at the bottom, which helps to enhance the stability and plugging effect of the plugging structure, the first water-permeable cover 31 is fixedly installed at the position close to the exhaust structure 2 of the heat tank body 1, which allows the heat exchange medium to flow freely through the first water-permeable cover 31 under normal circumstances, and the first water-permeable cover 31 is used for limiting the first floating ball 32, the first floating ball 32 can freely float with the rising of the liquid level of the heat exchange medium, when the heat tank body 1 is in an inclined state, the heat exchange medium may be affected by the gravity and / or the buoyancy and gather to one side, thereby pushing the first floating ball 32 to rise and tightly adhere to the exhaust structure 2 in the trapezoidal structure, which can effectively form a seal and prevent the heat exchange medium from leaking out of the exhaust structure 2, this plugging mechanism is not only simple and effective, but also can ensure that the heat tank can maintain high safety and reliability in various states.

[0047] In an embodiment, as shown in the drawings, Figure 4 the plugging structure is a second plugging member 4; the second plugging member 4 comprises a second water-permeable cover 41 and a second floating ball 42, the second floating ball 42 is arranged in the second water-permeable cover 41, and the second water-permeable cover 41 is fixedly installed at the position close to the exhaust structure 2 of the heat tank body 1. Further, the second water-permeable cover 41 comprises a tapered portion 411 and a water-permeable portion 412, the water-permeable portion 412 is fixedly installed on the tapered portion 411, the cross section of the tapered portion 411 is in a tapered structure, the tapered portion 411 is fixedly installed at the position close to the exhaust structure 2 of the heat tank body 1, the second floating ball 42 is arranged in the water-permeable portion 412, and when the heat tank body 1 is inclined, the heat exchange medium can drive the second floating ball 42 to plug the tapered portion 411.

[0048] In this embodiment, the sealing of the second sealing element 4 is achieved through the coordinated action of the second water-permeable cover 41 and the second float 42. The second water-permeable cover 41 consists of a conical part 411 and a water-permeable part 412. The conical part 411 has a conical cross-section and is fixedly installed on the heat tank body 1 near the exhaust structure 2. The water-permeable part 412 is fixed on the conical part 411, providing a space for the second float 42 to move. The second float 42 is set inside the water-permeable part 412 and can float freely with the change of the liquid level of the heat exchange medium. When the tank body 1 is tilted, the heat exchange medium may accumulate to one side, causing the liquid level in the permeable part 412 to rise, which in turn pushes the second float 42 to rise. As the cross-section of the conical part 411 gradually decreases, when the float rises to a certain extent, it will fit tightly against the inner wall of the conical part 411, forming an effective seal. This design not only utilizes the buoyancy principle of the float, but also cleverly combines the shape characteristics of the conical part 411 to achieve efficient sealing of the exhaust structure 2, ensuring the safety and reliability of the hot tank in the tilted state.

[0049] On the other hand, such as Figures 5 to 8 As shown, this application also proposes a water supply device, characterized in that it includes a housing 5 and a heat exchange component 6, wherein the heat exchange component 6 is disposed inside the housing 5;

[0050] Heat exchange assembly 6 includes heat exchanger 61;

[0051] It also includes the aforementioned hot tank; the hot tank is connected to heat exchanger 61.

[0052] Furthermore, the heat exchanger 61 is provided with a first flow channel, a drinking water inlet 611, a drinking water outlet 612, a second flow channel, a hot water inlet 613, and a hot water outlet 614. The first flow channel is connected to the drinking water inlet 611 and the drinking water outlet 612, and the second flow channel is connected to the hot water inlet 613 and the hot water outlet 614. The second flow channel is not connected to the first flow channel. When the heat exchange medium is in the second flow channel, it can exchange heat with the drinking water in the first flow channel to achieve the purpose of heating the drinking water, so as to provide hot water quickly and in large quantities.

[0053] Further, the first pipeline unit is arranged in the shell 5, and the first pipeline unit comprises a first pipeline 71, a second pipeline 72 and a third pipeline 73. The first pipeline 71 is communicated with the drinking water inlet interface 611. One end of the second pipeline 72 is communicated with the drinking water outlet interface 612, and the other end of the second pipeline 72 is connected with the heater 9. The heater 9 is connected with the third pipeline 73. When starting to operate, the drinking water firstly enters the heat exchanger 61 through the drinking water inlet interface 611. In the heat exchanger 61, the drinking water exchanges heat with the heat exchange medium which enters through the heat exchange water inlet interface 613. In this process, the heat exchange medium transmits heat to the drinking water, so that the temperature of the drinking water gradually increases, thereby realizing the preheating / heat exchange effect and facilitating to quickly and massively provide the drinking hot water. The heat exchanged drinking water then flows out of the heat exchanger 61 through the drinking water outlet interface 612, and is guided to the heater 9 through the second pipeline 72 of the first pipeline unit for further heating.

[0054] The second pipeline unit is further included in the embodiment, and the second pipeline unit comprises a fourth pipeline 81, a fifth pipeline 82 and a sixth pipeline 83. The fourth pipeline 81 is communicated with the fifth pipeline 82, and the fourth pipeline 81 is provided with a valve. One end of the fifth pipeline 82 is connected with the square tank water outlet 110 which is arranged at the top of the hot tank body 1. The other end of the fifth pipeline 82 is communicated with the heat exchange water inlet interface 613 of the heat exchanger 61. One end of the sixth pipeline 83 is connected with the heat exchange water outlet interface 614, and the other end of the sixth pipeline 83 is connected with the square tank water inlet 111 which is arranged at the bottom of the hot tank body 1. Since the heat exchange medium in the hot tank body 1 is heated and evaporated, the liquid level is lowered to a certain position, and needs to be supplemented. Therefore, the fourth pipeline 81 is connected with the water inlet pipe for supplementing the heat exchange medium for the hot tank body 1. It should be noted that when the hot tank body 1 introduces the heat exchange medium into the heat exchanger 61, the valve on the fourth pipeline 81 needs to be closed. The left end of the fifth pipeline 82 is communicated with the heat exchange water inlet interface 613 of the heat exchanger 61, the right end of the fifth pipeline 82 is communicated with the square tank water outlet 110, the sixth pipeline 83 is connected with the heat exchange water outlet interface 614, and the top end of the sixth pipeline 83 is communicated with the square tank water inlet 111.

[0055] In order to overcome the resistance that the heat exchange medium may encounter in the circulation process and ensure that the heat exchange medium can circulate smoothly in the system, a water pump 84 is further arranged on the fifth pipeline 82 and / or the sixth pipeline 83. The addition of the water pump 84 not only improves the operation efficiency, but also enables the entire system to be more flexible in adjusting the operation state when facing different working conditions. In operation, the heat medium in the heat tank body 1 enters the fifth pipeline 82 through the fourth pipeline 81 (in the state that the valve is opened), then the valve is closed, and the heat exchange medium of the heat tank body 1 is pushed by the water pump 84 to flow into the heat exchanger 61. In the heat exchanger 61, the heat exchange medium exchanges heat with the drinking water, transfers heat to the drinking water and preheats the drinking water. The preheated heat exchange medium then returns to the heat tank body 1 through the sixth pipeline 83, completing a circulation period. Through continuous circulation and preheating, the water supply device proposed in the application can efficiently utilize the heat energy in the heat medium and quickly and massively provide the user with drinking water with a suitable temperature.

[0056] The above only discloses preferred embodiments of the application, and of course cannot limit the scope of the right of the application. Therefore, equivalent changes made according to the claims of the application still fall within the scope of the application.

Claims

1. A thermal tank, characterized by, The application relates to a heat tank, which comprises the following parts: a heat tank body (1) with an inner cavity in a hollow structure, which is used for storing heat exchange medium; the heat tank body (1) is provided with an exhaust structure (2); a blocking structure is arranged at the exhaust structure (2); when the heat tank body (1) is in a normal state, a gap exists between the blocking structure and the exhaust structure (2), and the gas in the heat tank body (1) can be exhausted through the exhaust structure (2); when the heat tank body (1) is in an inclined state, the blocking structure blocks the exhaust structure (2).

2. The thermal tank of claim 1, wherein: The blocking structure comprises a floating member, and when the heat tank body (1) is in the inclined state, the heat exchange medium acts on the floating member to make the floating member block the exhaust structure; 3. The thermal tank of claim 1, wherein: the blocking structure comprises a movable blocking member, which is arranged at an exhaust passage of the exhaust structure (2), and when the heat exchange medium acts on the movable blocking member, the movable blocking member rotates or moves to block the exhaust passage.

4. The thermal tank of claim 3, wherein: One side of the movable blocking member is rotationally connected to the exhaust passage, and the other side of the movable blocking member is deflected in a direction away from the exhaust passage and keeps a gap with the exhaust passage; when the heat tank body is inclined, the heat exchange medium acts on the movable blocking member to deflect the movable blocking member to the exhaust passage to block the exhaust passage.

5. The thermal tank of claim 1, wherein: The exhaust structure (2) is arranged on a top cover (12) of the heat tank body (1).

6. The thermal tank of claim 1, wherein: The longitudinal section of the exhaust structure (2) is in a structure with a small upper part and a large lower part.

7. The thermal tank of claim 1, wherein: The blocking structure comprises a first blocking member (3), which comprises a first water-permeable cover (31) and a first floating ball (32), the first water-permeable cover (31) is fixedly arranged at the heat tank body (1) close to the exhaust structure (2), the first floating ball (32) is arranged in the first water-permeable cover (31), and the heat exchange medium can drive the first floating ball (32) to block the exhaust structure (2).

8. The thermal tank of claim 1, wherein: The blocking structure comprises a second blocking member (4); the second blocking member (4) comprises a second water-permeable cover (41) and a second floating ball (42), the second floating ball (42) is arranged in the second water-permeable cover (41), and the second water-permeable cover (41) is fixedly arranged at the heat tank body (1) close to the exhaust structure (2).

9. The thermal tank of claim 5, wherein: The second water-permeable cover (41) comprises a tapered part (411) and a water-permeable part (412), the water-permeable part (412) is fixed on the tapered part (411), the cross section of the tapered part (411) is in a tapered structure, the tapered part (411) is fixed at the heat tank body (1) close to the exhaust structure (2), the second floating ball (42) is arranged in the water-permeable part (412), and the second floating ball (42) can block the tapered part (411).

10. A water supply device characterized by comprising: The heat tank comprises a shell (5) and a heat exchange assembly (6), the heat exchange assembly (6) is arranged in the shell (5); the heat exchange assembly (6) comprises a heat exchanger (61); the heat tank is connected with the heat exchanger (61).