CN212205040U

CN212205040U - Water heater system

Info

Publication number: CN212205040U
Application number: CN202020808822.3U
Authority: CN
Inventors: 龙永平
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-22
Anticipated expiration: 2030-05-14

Abstract

The utility model relates to a water heater system, water heater system includes: a water heater host; the water inlet end of the hot water pipeline is connected with the water outlet end of the water heater main machine, and the water outlet end of the hot water pipeline is connected with the water using terminal; the water inlet end of the cold water pipeline is connected with the water inlet end of the water heater main machine, and the water outlet end of the cold water pipeline is connected with the water using terminal; the circulating pipeline is connected between the hot water pipeline and the cold water pipeline; be equipped with constant temperature unit in the water heater host computer, include: the constant temperature chamber is provided with a constant temperature cavity, and the constant temperature cavity is communicated with the water inlet end of the hot water pipeline; and the pushing mechanism can apply pushing force to the water in the thermostatic chamber so as to push the water in the thermostatic chamber into the hot water pipeline. According to the water heater system, the pushing mechanism can push hot water in the hot water pipeline to accurately reach the water outlet point of the water outlet end of the hot water pipeline, so that the phenomenon that the normal use of cold water is influenced by the fact that redundant hot water enters the cold water pipeline to heat the cold water pipeline is avoided.

Description

Water heater system

Technical Field

The utility model relates to a indirect heating equipment technical field especially relates to a water heater system.

Background

With the development of society and the progress of science and technology, the requirements of people on living quality are gradually improved, and a water heater for providing living hot water becomes one of the essential electric appliances in people's life. And as the requirements of people on the living quality are gradually improved, the requirements on the water heater are also gradually improved, and the zero-cold-water heater is produced along with the follow-up transportation. At present, a zero-cold-water heater widely used is connected with a hot water pipeline and a cold water pipeline, so that water in the hot water pipeline returns to a main machine of the water heater through the cold water pipeline for circulating heating, and a user can obtain hot water without waiting.

However, the zero-cold-water heater mentioned above often causes the temperature of the cold water pipe when hot water flows into the cold water pipe, and further causes damage to other devices (such as a water purifier) connected to the cold water pipe, and also causes waste of energy.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a water heater system that effectively prevents a cold water pipe from being heated by circulating hot water, in order to solve the problem that the cold water pipe is heated by circulating hot water.

A water heater system, the water heater system comprising:

a water heater host;

the water inlet end of the hot water pipeline is connected with the water outlet end of the water heater main machine, and the water outlet end of the hot water pipeline is connected with the water using terminal;

the water inlet end of the cold water pipeline is connected to the water inlet end of the water heater main machine, and the water outlet end of the cold water pipeline is connected to the water using terminal;

a circulation pipe connected between the hot water pipe and the cold water pipe;

wherein, be equipped with constant temperature unit in the water heater host computer, constant temperature unit includes:

the constant temperature chamber is provided with a constant temperature cavity, and the constant temperature cavity is communicated with the water inlet end of the hot water pipeline;

a pushing mechanism controllably applying a pushing force to the water in the thermostatic chamber to push the water in the thermostatic chamber into the hot water pipe.

In one embodiment, the volume of the thermostatic chamber is greater than the total volume of the hot water pipe.

In one embodiment, one end of the pushing mechanism extends into the thermostatic chamber and divides the thermostatic chamber into a first thermostatic chamber and a second thermostatic chamber, the second thermostatic chamber is communicated with the water inlet end of the hot water pipeline, and one end of the pushing mechanism extending into the thermostatic chamber can move along the direction in which the first thermostatic chamber and the second thermostatic chamber point to each other so as to push the water in the second thermostatic chamber into the hot water pipeline.

In one embodiment, one end of the pushing mechanism extending into the thermostatic chamber is selectively communicated with the first thermostatic chamber and the second thermostatic chamber;

when one end of the pushing mechanism extending into the thermostatic chamber is static relative to the thermostatic chamber, the first thermostatic chamber and the second thermostatic chamber are communicated with each other through the pushing mechanism; when one end of the pushing mechanism extending into the thermostatic chamber moves along the direction of the first thermostatic chamber pointing to the second thermostatic chamber, the first thermostatic chamber and the second thermostatic chamber are disconnected with each other through the pushing mechanism.

In one embodiment, the pushing mechanism includes a piston rod, a piston plate, and an opening/closing member, the piston plate is disposed at one end of the piston rod, at which the piston plate is disposed, is inserted into the thermostatic chamber, the thermostatic chamber is divided into the first thermostatic chamber and the second thermostatic chamber by the piston plate, a communication hole communicating the first thermostatic chamber with the second thermostatic chamber is formed in the piston plate, the opening/closing member is mounted on the piston plate, and the opening/closing member can close or open the communication hole under an external force.

In one embodiment, the opening and closing member is rotatably installed at a side of the piston plate facing the second thermostatic chamber.

In one embodiment, the piston plate is provided with a plurality of communication holes, and the pushing mechanism comprises a plurality of opening and closing members, each of which closes or opens one of the communication holes.

In one embodiment, the pushing mechanism further includes a driving member, the driving member is disposed outside the thermostatic chamber, one end of the piston rod extending out of the thermostatic chamber is connected to the driving member in a transmission manner, and the driving member is used for driving the piston rod to move back and forth along a direction in which the first thermostatic chamber and the second thermostatic chamber point to each other.

In one embodiment, the water heater system is a gas water heater system.

In one embodiment, the water heater main unit comprises a combustion unit, a water inlet pipeline, a heat exchange unit and a water outlet pipeline, wherein the water outlet end of the water inlet pipeline is connected to the water inlet end of the heat exchange unit, the water outlet end of the heat exchange unit is connected to the water inlet end of the water outlet pipeline, the water outlet end of the water outlet pipeline is connected to the hot water pipeline, the constant temperature unit is arranged on the water outlet pipeline, the combustion unit is arranged on one side of the heat exchange unit, and the combustion unit can exchange heat with the heat exchange unit.

According to the water heater system, when a user closes the water using terminal and stops using water, and the water heater is in a standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipeline is lower than the preset circulating starting temperature, the control unit can control the pushing mechanism to push the hot water pipeline, and therefore the water in the hot water pipeline is guaranteed to have higher temperature all the time. Meanwhile, the water with lower temperature remained in the hot water pipeline originally enters the heat exchange unit through the circulating pipeline and the cold water pipeline for circulating heating. Moreover, the pushing mechanism can push hot water in the hot water pipeline to accurately reach a water outlet point at the water outlet end of the hot water pipeline, so that the phenomenon that the normal use of cold water is influenced by the fact that redundant hot water enters the cold water pipeline to heat the cold water pipeline is avoided.

Drawings

Fig. 1 is a schematic diagram of a water heater system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a thermostatic unit of the water heater system of FIG. 1 with a first thermostatic chamber and a second thermostatic chamber in communication with each other;

FIG. 3 is a schematic structural view of a thermostatic unit of the water heater system of FIG. 2 with a first thermostatic chamber and a second thermostatic chamber disconnected from each other;

FIG. 4 is a front view of a piston plate of the thermostatic unit shown in FIG. 1;

fig. 5 is a schematic cross-sectional view of a piston plate of the thermostatic unit shown in fig. 4.

Description of reference numerals:

100. a water heater system; 10. a water heater host; 11. a combustion unit; 12. a water inlet pipeline; 13. a heat exchange unit; 14. a water outlet pipeline; 15. a constant temperature unit; 152. a constant temperature chamber; 1521. a first thermostatic chamber; 1523. a second thermostatic chamber; 154. a pushing mechanism; 1541. a drive member; 1543. a piston rod; 1545. a piston plate; 1542a, a communicating hole; 1547. an opening and closing member; 20. a hot water pipe; 30. a cold water pipe; 40. a circulation pipe; 50. and (5) using water for termination.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a system diagram of a water heater system 100 according to an embodiment of the present invention is shown. An embodiment of the present invention provides a water heater system 100, and the structure of the water heater system 100 of the present application is described below by taking the water heater system 100 as a gas water heater system as an example. The present embodiment is described as an example, and the technical scope of the present application is not limited thereto. It is understood that in other embodiments, the water heater system 100 may also be embodied as other heat exchange systems capable of generating hot water, and is not limited herein.

The water heater system 100 includes a control unit (not shown), a water heater main 10, a hot water pipe 20, a cold water pipe 30, a circulation pipe 40, and a water use terminal 50, under the control of the control unit, hot water generated by the water heater main 10 is delivered to the water use terminal 50 through the hot water pipe 20, and the cold water pipe 30 delivers cold water output from an external water supply device to the water use terminal 50, so as to provide domestic water with different temperatures for a user.

The water heater main unit 10 includes a combustion unit 11, a water inlet pipeline 12, a heat exchange unit 13 and a water outlet pipeline 14. Specifically, the water inlet end of the water inlet pipeline 12 is connected to an external water supply device, the water outlet end of the water inlet pipeline 12 is connected to the water inlet end of the heat exchange unit 13, the water outlet end of the heat exchange unit 13 is connected to the water inlet end of the water outlet pipeline 14, and the water outlet end of the water outlet pipeline 14 is connected to the hot water pipeline 20. The combustion unit 11 is disposed at one side of the heat exchange unit 13, and heat generated by combustion of gas in the combustion unit 11 exchanges heat with the heat exchange unit 13.

In this way, the water flowing into the heat exchange unit 13 through the water inlet pipe 12 absorbs heat generated by combustion of the gas in the combustion unit 11 to increase the temperature, and the water having increased the temperature is transported to the hot water pipe 20 through the water outlet pipe 14 to supply water to the water use terminal 50.

The water inlet end of the hot water pipeline 20 is connected to the water outlet end of the water heater main unit 10, specifically to the water outlet end of the thermostatic unit 15, the water outlet end of the hot water pipeline 20 is connected to the water using terminal 50, and the water outlet end of the hot water pipeline 20 is provided with a temperature sensor for detecting the water temperature at the water outlet end of the hot water pipeline 20. In this way, the hot water flowing out from the water outlet pipeline 14 flows into the water terminal 50 through the hot water pipeline 20, and the control unit can obtain the temperature of the water at the water outlet end of the hot water pipeline 20 in real time.

Further, the water inlet end of the cold water pipe 30 is connected to the water inlet end of the water heater main unit 10 (i.e., the water inlet end of the water inlet pipe 12) at the same time as the external water supply device, so that the water inlet end of the cold water pipe 30 can be alternatively communicated with the external water supply device or the water inlet end of the water heater main unit 10. The water heater system 100 further includes a circulation pipe 40, the circulation pipe 40 is connected between the hot water pipe 20 and the cold water pipe 30, specifically, between the hot water pipe 20 and the cold water pipe 30 which are farthest from the water heater main unit 10, and the circulation pipe 40 is provided with a check valve to unidirectionally communicate the hot water pipe 20 and the cold water pipe 30.

In this way, when the user closes the water use terminal 50 and stops using water, under the control of the control unit, the water remaining in the hot water pipe 20 may enter the cold water pipe 30 through the circulation pipe 40, then flow back to the water inlet pipe 12 through the cold water pipe 30, and finally enter the heat exchange unit 13 for circulation heating. Therefore, when the user turns on the water use terminal 50 again, the hot water pipe 20 does not have residual cold water output, thereby achieving the effect of zero cold water.

Referring to fig. 1, in an embodiment of the present application, the water outlet pipeline 14 further includes a constant temperature unit 15, as shown in fig. 2 and fig. 3, the constant temperature unit 15 includes a constant temperature compartment 152 and a pushing mechanism 154, the constant temperature compartment 152 has a constant temperature cavity for storing water, a water inlet end of the constant temperature cavity is connected to the heat exchanging unit 13 through a pipe, a water outlet end of the constant temperature cavity is connected to a water inlet end of the hot water pipeline 20, and a volume of the constant temperature cavity is greater than a total volume of the hot water pipeline 20. The pushing mechanism 154 may apply a pushing force to the water in the thermostatic chamber under the control of the control unit to push the water of the thermostatic chamber into the hot water pipe 20.

In this way, when the user closes the water using terminal 50 and stops using water, and the water heater is in a standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, the control unit can control the pushing mechanism 154 to push the hot water pipe 20, so as to ensure that the water in the hot water pipe 20 has a higher temperature all the time. Meanwhile, the low-temperature water originally remaining in the hot water pipe 20 enters the heat exchange unit 13 through the circulation pipe 40 and the cold water pipe 30 to be circularly heated. Moreover, the pushing mechanism 154 can push the hot water in the hot water pipe 20 to accurately reach the water outlet point at the water outlet end of the hot water pipe 20, so as to prevent the excessive hot water from entering the cold water pipe 30 and heating the cold water pipe 30, which may affect the normal use of the cold water.

Referring to fig. 2 and fig. 3, specifically, one end of the pushing mechanism 154 extends into the thermostatic chamber and divides the thermostatic chamber into a first thermostatic chamber 1521 and a second thermostatic chamber 1523, the first thermostatic chamber 1521 is connected to the water outlet end of the heat exchanging unit 13 through a pipe, the second thermostatic chamber 1523 is communicated with the water inlet end of the hot water pipe 20, and one end of the pushing mechanism 154 extending into the thermostatic chamber can move along the direction pointing to the second thermostatic chamber 1523 from the first thermostatic chamber 1521 relative to the thermostatic chamber 152, so as to push the water in the second thermostatic chamber 1523 into the hot water pipe 20.

Specifically, in one embodiment, the pushing mechanism 154 includes a driving member 1541, a piston rod 1543, a piston plate 1545, and a shutter 1547. The driving member 1541 is located outside the thermostatic chamber, one end of the piston rod 1543 is connected to the driving member 1541 in a transmission manner, and the driving member 1541 is used for driving the piston rod 1543 to reciprocate along the direction in which the first thermostatic chamber 1521 and the second thermostatic chamber 1523 point to each other. The piston plate 1545 is arranged at the other end of the piston rod 1543 away from the driving member 1541, one end of the piston rod 1543, which is provided with the piston plate 1545, is inserted into the thermostatic chamber, and the outer diameter of the piston plate 1545 is matched with the inner diameter of the thermostatic chamber, so that the thermostatic chamber is divided into a first thermostatic chamber 1521 and a second thermostatic chamber 1523 which are adjacent to each other.

As shown in fig. 4 and 5, the piston plate 1545 is provided with a plurality of communicating holes 1542a for communicating the first thermostatic chamber 1521 with the second thermostatic chamber 1523, a plurality of openers 1547 are rotatably provided on a side of the piston plate 1545 facing the second thermostatic chamber 1523, and each opener 1547 can correspondingly close or open one of the communicating holes 1542a under an external force.

In this manner, the end of pushing mechanism 154 extending into thermostatic chamber 152 selectively communicates with first thermostatic chamber 1521 and second thermostatic chamber 1523. Specifically, as shown in fig. 2, when the piston rod 1543 is stationary with respect to the thermostatic chamber 152, the water in the first thermostatic chamber 1521 pushes the shutter 1547 to rotate in the water flow direction to open the communication hole 1542a, thereby flowing into the second thermostatic chamber 1523 through the communication hole 1542 a. As shown in fig. 3, when the control unit controls the driving member 1541 to drive the piston rod 1543 to move in the direction in which the first thermostatic chamber 1521 points to the second thermostatic chamber 1523, the opening/closing member 1547 closes the communication hole 1542a under the urging force of the water in the second thermostatic chamber 1523, and the water in the second thermostatic chamber 1523 is pushed into the hot water pipe 20 by the piston plate 1545.

According to the water heater system 100, when the water heater system 100 is in a normal water supply state, the first constant temperature cavity 1521 and the second constant temperature cavity 1523 are communicated with each other, water with different temperatures output by the heat exchange unit 13 can be uniformly mixed in the constant temperature cavities, hot water with too high temperature and cold water with too low temperature are buffered, and therefore the water input into the hot water pipeline 20 through the constant temperature cavities has stable temperature.

When the water heater is in a standby state, once the temperature sensor detects that the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, the control unit can control the pushing mechanism 154 to push out the water in the thermostatic chamber to enter the hot water pipe 20 so as to keep the water in the hot water pipe 20 at the preset temperature all the time. The water with lower temperature originally in the hot water pipeline 20 returns to the water heater main machine 10 through the circulating pipeline 40 and the cold water pipeline 30 to absorb heat again and raise temperature, and then enters the thermostatic chamber for storage.

The above process is continuously circulated, so that the water in the hot water pipeline 20 is always kept at the preset temperature, the zero-cold-water zero-waiting effect is achieved, the cold water pipeline 30 cannot be heated, and unnecessary resource waste is avoided. In addition, since the hot water and the cold water output from the heat exchange unit 13 can be sufficiently mixed in the thermostatic unit 15, the water temperature fluctuation caused by the unstable water pressure of the external water supply device is effectively prevented,

referring to fig. 2, a control method of a water heater system 100 according to an embodiment of the present invention includes the following steps:

s110: when the water heater main body 10 is in a standby state, the temperature of the water outlet end of the hot water pipeline 20 is obtained.

Specifically, when the water heater main body 10 is in a standby state, no water flows out from the water using terminal 50, and the temperature sensor at the water outlet end of the hot water pipe 20 acquires the temperature at the water outlet end of the hot water pipe 20 and sends the temperature to the control unit.

S120: when the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, pushing force is applied to the water in the thermostatic chamber to push the water in the thermostatic chamber into the hot water pipe 20.

Specifically, when the control unit obtains that the temperature of the water outlet end of the hot water pipe 20 is lower than the preset cycle starting temperature, the control unit controls the driving member 1541 to drive the piston rod 1543 to move, and the piston plate 1545 pushes the hot water in the second thermostatic chamber 1523 into the hot water pipe 20.

In some embodiments, since the inner diameter of the thermostatic chamber is constant, the control unit may obtain the length and the diameter of the hot water pipe 20, and then calculate the moving distance of 1545 of the piston plate of the pushing mechanism 154 during pushing the water in the thermostatic chamber according to the length and the diameter of the hot water pipe 20, so that the volume of the water pushed into the hot water pipe 20 by the pushing mechanism 154 is equal to the volume of the hot water pipe 20, thereby preventing the excess hot water from entering the cold water pipe 30 through the circulating pipe 40 to heat the cold water pipe 30, and further preventing the cold water pipe 30 from heating up to damage other devices on the cold water pipe 30 and waste energy.

S130: heating the water pushed into the water heater main body 10.

Specifically, the water with a lower temperature originally located in the hot water pipeline 20 returns to the water heater main machine 10 through the circulation pipeline 40 and the cold water pipeline 30 to absorb heat again and raise the temperature under the action of the water pushed out of the thermostatic chamber, and finally enters the thermostatic chamber for storage.

Thus, the above process is performed in a circulating manner, so that the water in the hot water pipe 20 can be always kept at the preset temperature, and the user can immediately obtain the hot water having the preset temperature after starting the water using terminal 50.

The water heater system 100 and the control method thereof enable a user to quickly obtain hot water of a preset temperature without waiting after the user opens the water using terminal 50 by pushing the hot water in the thermostatic chamber into the hot water pipe 20. Furthermore, since the volume of water pushed into the hot water pipe 20 can be controlled by controlling the moving distance of the piston plate 1545 of the pushing mechanism 154, the water pushed into the hot water pipe 20 can be made to reach the water outlet point of the water outlet end of the hot water pipe 20 accurately, and no excessive hot water enters the cold water pipe 30 to cause the temperature of the cold water pipe 30 to rise. In addition, the hot water and the cold water with too high temperature output by the heat exchange unit 13 can be uniformly mixed in the constant temperature cavity, so that the temperature of the hot water output by the water heater main machine 10 is kept stable, and meanwhile, the buffering is realized due to the improvement of user experience.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A water heater system, characterized in that the water heater system comprises:

a water heater main body (10);

a hot water pipeline (20), wherein the water inlet end of the hot water pipeline (20) is connected to the water outlet end of the water heater main body (10), and the water outlet end of the hot water pipeline (20) is connected to a water using terminal (50);

a cold water pipeline (30), wherein the water inlet end of the cold water pipeline (30) is connected to the water inlet end of the water heater main machine (10), and the water outlet end of the cold water pipeline (30) is connected to the water using terminal (50);

a circulation pipe (40) connected between the hot water pipe (20) and the cold water pipe (30);

wherein, be equipped with constant temperature unit (15) in water heater host computer (10), constant temperature unit (15) include:

a thermostatic chamber (152) with a thermostatic chamber, the thermostatic chamber being communicated with the water inlet end of the hot water pipeline (20);

a pushing mechanism (154) which can controllably apply a pushing force to the water in the thermostatic chamber to push the water in the thermostatic chamber into the hot water pipe (20).

2. A water heater system according to claim 1, wherein the volume of the thermostatic chamber is greater than the total volume of the hot water pipe (20).

3. The water heater system according to claim 1, characterized in that one end of the pushing mechanism (154) extends into the thermostatic chamber and divides the thermostatic chamber into a first thermostatic chamber (1521) and a second thermostatic chamber (1523), the second thermostatic chamber (1523) is communicated with the water inlet end of the hot water pipeline (20), and one end of the pushing mechanism (154) extending into the thermostatic chamber can move along the direction in which the first thermostatic chamber (1521) and the second thermostatic chamber (1523) point to each other so as to push the water in the second thermostatic chamber (1523) into the hot water pipeline (20).

4. A water heater system according to claim 3, wherein the end of the pushing mechanism (154) extending into the thermostatic chamber (152) is selectively in communication with the first thermostatic chamber (1521) and the second thermostatic chamber (1523);

when one end of the pushing mechanism (154), which extends into the thermostatic chamber, is static relative to the thermostatic chamber (152), the first thermostatic chamber (1521) and the second thermostatic chamber (1523) are communicated with each other through the pushing mechanism (154); when one end of the pushing mechanism (154), which extends into the thermostatic chamber, moves along the direction that the first thermostatic chamber (1521) points to the second thermostatic chamber (1523), the first thermostatic chamber (1521) and the second thermostatic chamber (1523) are mutually disconnected through the pushing mechanism (154).

5. The water heater system according to claim 4, wherein the pushing mechanism (154) includes a piston rod (1543), a piston plate (1545) and a closing member (1547), the piston plate (1545) is disposed at one end of the piston rod (1543), one end of the piston rod (1543) having the piston plate (1545) is inserted into the constant temperature cavity, the piston plate (1545) divides the constant temperature cavity into the first constant temperature cavity (1521) and the second constant temperature cavity (1523), the piston plate (1545) is provided with a communication hole (1542a) communicating the first constant temperature cavity (1521) and the second constant temperature cavity (1523), the closing member (1547) is mounted on the piston plate (1545), and the closing member (7) can close or open the communication hole (1542a) under an external force.

6. The water heater system according to claim 5, wherein the shutter (1547) is rotatably mounted to a side of the piston plate (1545) facing the second thermostatic chamber (1523).

7. The water heater system according to claim 5, wherein the piston plate (1545) is opened with a plurality of the communication holes (1542a), and the urging mechanism (154) includes a plurality of opening/closing members (1547), and each of the opening/closing members (1547) closes or opens one of the communication holes (1542 a).

8. The water heater system according to claim 5, wherein the pushing mechanism (154) further includes a driving member (1541), the driving member (1541) is disposed outside the thermostatic chamber (152), one end of the piston rod (1543) extending out of the thermostatic chamber (152) is connected to the driving member (1541) in a transmission manner, and the driving member (1541) is configured to drive the piston rod (1543) to move back and forth along a direction in which the first thermostatic chamber (1521) and the second thermostatic chamber (1523) point to each other.

9. The water heater system of claim 1, wherein the water heater system is a gas water heater system.

10. The water heater system according to claim 9, wherein the water heater main body (10) comprises a combustion unit (11), a water inlet pipeline (12), a heat exchange unit (13) and a water outlet pipeline (14), the water outlet end of the water inlet pipeline (12) is connected to the water inlet end of the heat exchange unit (13), the water outlet end of the heat exchange unit (13) is connected to the water inlet end of the water outlet pipeline (14), the water outlet end of the water outlet pipeline (14) is connected to the hot water pipeline (20), the constant temperature unit (15) is arranged on the water outlet pipeline (14), the combustion unit (11) is arranged on one side of the heat exchange unit (13), and the combustion unit (11) can exchange heat with the heat exchange unit (13).