A heating / cooling device

Abstract

A heating / cooling device includes a water storage tank and a pressure tank. The pressure tank includes a fixed part, a movable part, and a deformable part. The movable part is movably and sealingly connected to the inner wall of the water storage tank, thereby dividing the water storage tank into a first space and a second space that are not interconnected. The first space constitutes a water storage space. The fixed part and the deformable part are located in the second space, and the two ends of the deformable part are respectively connected to the fixed part and the movable part. The space enclosed by the fixed part, the movable part, and the deformable part constitutes a pressure space. Because the first space and the second space are not interconnected, direct contact between the deformable part and the water in the outlet space is avoided, solving the problem of scale deposition on the surface of the deformable part, ensuring that the deformable part structure will not fail, and making the product operate stably.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, and in particular to a heating / cooling device. Background Technology

[0002] Common pressure tanks / pressure chambers with deformable parts are in direct contact with water during use. After prolonged use, scale easily accumulates on the surface of the deformable parts. Scale itself is relatively hard, which increases the rigidity of the deformable parts, thereby affecting their elasticity. This prevents the deformable parts from expanding and contracting normally, which can easily lead to structural failure of the deformable parts. Utility Model Content

[0003] This invention provides a heating / cooling device that avoids direct contact between the deformed part and water, solves the problem of scale buildup on the surface of the deformed part, and ensures user water safety and stable product operation.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A heating / cooling device, comprising:

[0006] The water storage tank is equipped with an inlet and an outlet.

[0007] The pressure tank includes a fixed part, a movable part, and a deformable part. The movable part is movably and sealingly connected to the inner wall of the water storage tank, thereby dividing the water storage tank into a first space and a second space that are not interconnected. The first space constitutes a water storage space. The fixed part is located in the second space, and the two ends of the deformable part are respectively connected to the fixed part and the movable part. The space enclosed by the fixed part, the movable part, and the deformable part constitutes a pressure space. The inlet and outlet are connected to the water storage space.

[0008] One end of the fixed or deformable part is fixedly connected to the water storage tank, and the movable part is displaced under the pressure of the water storage space, causing the pressure tank to expand and contract; and,

[0009] The temperature control component is used to heat or cool the water in the water storage space, causing the water in the water storage space to expand or contract, resulting in a change in pressure in the first space. The second space is used to absorb the pressure change in the first space.

[0010] Furthermore, during water intake, the inlet pressure P1 is not greater than the pressure P0 of the pressure space; during water discharge, the pressure P0 of the pressure space is not less than the pressure P3 of the water storage space, and the pressure P3 of the water storage space is not greater than the inlet pressure P1.

[0011] Furthermore, the inlet is connected to an inlet water passage, and the outlet is connected to an outlet water passage. The inlet water passage is equipped with a check valve and a pressure relief valve is located between the check valve and the inlet, and / or the outlet water passage is equipped with a pressure relief valve. The check valve and pressure relief valve limit the inlet water pressure to P1, and the pressure relief valve opens at P2, with P1... <P0<P2。

[0012] Furthermore, the water inlet circuit is equipped with a control valve assembly, which includes a valve body. The valve body has an inlet, a drain, and a drain outlet that are interconnected. The inlet is connected to the water supply source, the drain outlet is connected to the inlet, and the drain outlet is connected to the drainage channel.

[0013] The inlet is equipped with a first valve group that opens in the direction of water inflow, and the outlet is equipped with a second valve group that opens in the direction of pressure relief. The first valve group constitutes a check valve and a pressure reducing valve, and the second valve group constitutes a pressure relief valve.

[0014] Furthermore, a sealing ring is fitted on the outer side of the movable part, and the movable part is movably and sealed to the inner wall of the water storage tank through the sealing ring.

[0015] Furthermore, the sealing ring is a Y-shaped sealing ring with the opening facing upwards. When water flows from the water storage space to the second space, the opening of the Y-shaped sealing ring opens to increase the sealing performance between the moving part and the inner wall of the water storage tank.

[0016] Furthermore, a wear-resistant gasket is fitted on the outer side of the moving part. The outer side of the wear-resistant gasket slides against the inner wall of the water storage tank, and the wear-resistant gasket is located below the Y-shaped sealing ring.

[0017] Furthermore, the movable part has a recess, and the deformable part is located around the outside of the recess. The space enclosed by the recess and the water storage tank constitutes a water storage space.

[0018] Furthermore, the deformable part is composed of a stretchable bellows or elastic element.

[0019] Furthermore, the inner wall of the water storage tank has a protrusion extending radially inward in the middle, and the movable part can abut against the protrusion.

[0020] Furthermore, the water storage space is also equipped with a water inlet pipe, one end of which is connected to the water inlet, and the other end of which is located at the bottom of the water storage space and connected to a water baffle.

[0021] Furthermore, the second space constitutes a pressure buffer space, used to absorb the water hammer effect caused by excessive inlet water pressure.

[0022] The beneficial effects of this utility model are:

[0023] 1. A heating / refrigerating device proposed by the present utility model comprises a water storage tank body and a pressure tank body, wherein the pressure tank body comprises a fixed part, a movable part and a deformable part, the movable part is movably and sealingly connected to the inner side wall surface of the water storage tank body, thereby dividing the water storage tank body into a first space and a second space that are not communicated with each other, the first space forms a water storage space, the fixed part and the deformable part are arranged in the second space, two ends of the deformable part are respectively connected to the fixed part and the movable part, and a space enclosed by the fixed part, the movable part and the deformable part forms a pressure space. Since the first space and the second space are not communicated with each other, the direct contact between the deformable part and the water body in the water outlet space is avoided, the problem of scale deposition on the surface of the deformable part is solved, it is ensured that the structure of the deformable part does not fail, and the product operates stably.

[0024] 2. In the heating / refrigerating device proposed by the present utility model, the water inlet pressure P1 of a water inlet is not greater than the pressure P0 of the pressure space, so as to prevent the deformable part from being compressed during water inlet, which leads to failure of the pressure tank body; when water is discharged, the pressure P0 of the pressure space is not less than the pressure P3 of the water storage space, ensuring that the water body in the water storage space can be discharged out of the water storage tank body under the extrusion of the pressure tank body, and the pressure P3 of the water storage space is not greater than the water inlet pressure P1, realizing that water discharge and water inlet are performed simultaneously.

[0025] 3. In the heating / refrigerating device proposed by the present utility model, a water inlet water path is provided with a non-return pressure reducing valve, a pressure relief valve is arranged at a position between the non-return pressure reducing valve and the water inlet and / or a water outlet water path is provided with a pressure relief valve, the non-return pressure reducing valve is used for reducing the inlet water pressure to not exceed P1, avoiding excessive inlet water pressure, meanwhile the opening pressure of the pressure relief valve is P2, avoiding excessive pressure in the water storage space; in addition, P1<P0<P2, preventing inlet water flow from being directly discharged through the pressure relief valve.

[0026] 4. The heating / refrigerating device proposed by the present utility model further comprises a control valve group arranged on the water inlet water path, the control valve group comprises a valve body, a first valve group arranged in the valve body and opened along a water inlet direction, and a second valve group arranged in the valve body and opened along a pressure relief direction, the first valve group forms the non-return pressure reducing valve, the second valve group forms the pressure relief valve, the functions of the non-return pressure reducing valve and the pressure relief valve are realized through a single control valve group, and the installation efficiency is improved.

[0027] 5. In the heating / refrigerating device proposed by the present utility model, a Y-shaped sealing ring with an upward opening is sleeved on the outer side of the movable part, the movable part is movably and sealingly connected to the inner side wall surface of the water storage tank body through the Y-shaped sealing ring, preventing water in the water storage tank body from seeping into the deformable part.

[0028] 6. In the heating / refrigerating device proposed by the present utility model, a wear-resistant washer is also sleeved on the outer side of the movable part, the outer side vertical surface of the wear-resistant washer is in sliding abutting contact with the inner side wall surface of the water storage tank body, so as to increase the wear resistance between the Y-shaped sealing ring and the water storage tank body, and prevent sealing failure caused by long-term friction between a single Y-shaped sealing ring and the water storage tank body.

[0029] 7. The present invention proposes a heating / cooling device, wherein the movable part is provided with a recess, and the space enclosed by the recess and the water storage tank constitutes a water storage space. The recess increases the volume of the water storage space and expands the applicable range of the heating / cooling device.

[0030] 8. The present invention proposes a heating / cooling device in which a protrusion extending radially inward is provided in the middle of the inner wall of the water storage tank, and the top wall can abut against the protrusion to limit the expansion of the pressure tank and prevent the pressure tank from over-expanding under the pressure of the pressure space, which would cause squeezing damage to the temperature control components located in the water storage space.

[0031] 9. The heating / cooling device proposed in this utility model is provided with a water inlet pipe in the water storage space. One end of the water inlet pipe is connected to the water inlet, and the other end of the water inlet pipe is provided with a water baffle to prevent water from rushing directly into the water storage space.

[0032] 10. The present invention proposes a heating / cooling device in which the second space constitutes a pressure buffer space to absorb the water hammer effect generated when the inlet water pressure is too high. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the pressure tank of a heating / cooling device of this utility model when it is not compressed;

[0035] Figure 2 This is a schematic diagram of the pressure tank of a heating / cooling device of this utility model when it is compressed;

[0036] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0037] Figure 4 This is a schematic diagram illustrating the application of a heating / cooling device according to the present invention;

[0038] Figure 5 This is a schematic diagram of a control valve assembly for a heating / cooling device according to the present invention;

[0039] In the diagram, 10 is the water storage tank; 101 is the water inlet; 102 is the water outlet; 103 is the protrusion; 20 is the pressure tank; 201 is the fixed part; 2011 is the air filling / draining port; 202 is the movable part; 2021 is the recess; 203 is the deformable part; 30 is the pressure space; 40 is the water storage space; 50 is the temperature control component; 60 is the water inlet passage; 70 is the water outlet passage; 80 is the switch component; 90 is the control valve assembly; 100 is the valve body; 100 is the valve body. 1. Water inlet; 1002. Water outlet; 1003. Downflow outlet; 110. First valve assembly; 1101. First valve core; 1102. First elastic element; 120. Second valve assembly; 1201. Second valve core; 1202. Second elastic element; 130. Water inlet pipe; 140. Water baffle; 150. Temperature sensor; 1601. Y-shaped sealing ring; 1602. Wear-resistant gasket; 1701. First space; 1702. Second space. Detailed Implementation

[0040] The following is combined with Figures 1-5 This utility model will be described in detail.

[0041] A heating / cooling device, comprising:

[0042] The water storage tank 10 is provided with an inlet 101 and an outlet 102;

[0043] The pressure tank 20 includes a fixed part 201, a movable part 202, and a deformable part 203. The movable part 202 is movably and sealingly connected to the inner wall of the water storage tank 10, thereby dividing the water storage tank 10 into a first space 1701 and a second space 1702 that are not interconnected. The first space 1701 constitutes a water storage space 40. The fixed part 201 and the deformable part 203 are disposed in the second space 1702, and the two ends of the deformable part 203 are respectively connected to the fixed part 201 and the movable part 202. The space enclosed by the fixed part 201, the movable part 202, and the deformable part 203 constitutes a pressure space 30. The inlet 101 and the outlet 102 are connected to the water storage space 40. Furthermore, the inlet pressure of the inlet 101 is not greater than the pressure P0 of the pressure space 30 to prevent the deformable part 203 from being compressed during the water intake process, which would cause the pressure tank 20 to fail.

[0044] Since the first space 1701 and the second space 1702 are not interconnected, direct contact between the deformable part 203 and the water in the water storage space 40 is avoided, solving the problem of scale deposition on the surface of the deformable part 203, ensuring that the structure of the deformable part 203 will not fail, and making the product operate stably. The fixed part 201 or the end of the deformable part 203 furthest from the movable part 202 is fixedly connected to the water storage tank 10. The movable part 202 is displaced under the pressure of the water storage space 40, causing the pressure tank 20 to expand and contract; and...

[0045] The temperature control component 50 is used to heat or cool the water in the water storage space 40, causing the water in the water storage space 40 to expand or contract, resulting in a change in pressure in the first space 1701. The second space 1702 is used to absorb the pressure change in the first space 1701. Furthermore, the second space 1702 also constitutes a pressure buffer space to absorb the water hammer effect caused by excessive inlet water pressure.

[0046] In this embodiment, the temperature control component 50 is a heating element used to heat the water in the water storage space 40, causing the first space 1701 to expand and the second space 1702 to contract to absorb the pressure change in the first space 1701. In other embodiments, the temperature control component 50 is a cooling element used to cool the water in the water storage space 40. When the cooling water temperature is below 4°C, the density of the water decreases and its volume increases, causing the first space 1701 to expand and the second space 1702 to contract to absorb the expansion of the first space 1701, preventing excessive pressure in the water storage space 40 from causing overflow. When the cooling water temperature is above 4°C, the volume of the water shrinks and the second space 1702 expands to balance the pressure in the water storage space 40.

[0047] A sealing ring is fitted on the outer side of the movable part 202, and the movable part 202 is movably and sealingly connected to the inner wall of the water storage tank 10 through the sealing ring. For example... Figure 3 As shown, the sealing ring is a Y-shaped sealing ring 1601 with the opening facing upward. When the water in the water storage space 40 flows to the second space 1702, the opening of the Y-shaped sealing ring 1601 opens to increase the sealing performance between the movable part 202 and the inner wall of the water storage tank 10, preventing water in the water storage tank 10 from seeping into the deformable part 203. Meanwhile, a wear-resistant gasket 1602 is also fitted on the outer side of the movable part 202. Specifically, the wear-resistant gasket 1602 is a Teflon positive guide wear-resistant gasket. The outer surface of the wear-resistant gasket 1602 slides against the inner wall of the water storage tank 10, and the wear-resistant gasket 1602 is located below the Y-shaped sealing ring 1601. When the movable part 202 is subjected to pressure and moves downward or upward, causing the deformation part 203 to compress or expand, the wear resistance between the Y-shaped sealing ring 1601 and the water storage tank 10 is increased, preventing long-term friction between the single Y-shaped sealing ring 1601 and the water storage tank 10 from causing seal failure. Furthermore, the movable part 202 is provided with a first mounting groove and a second mounting groove for installing the Y-shaped sealing ring 1601 and the Teflon positive guide wear-resistant gasket 1602.

[0048] In this embodiment, when water enters, the water inlet pressure P1 of the water inlet 101 is not greater than the pressure P0 of the pressure space 30, so as to prevent the deformation part 203 from being compressed during the water inlet process, which leads to failure of the pressure tank 20; when water is discharged, the pressure P0 of the pressure space 30 is not less than the pressure P3 of the water storage space 40, ensuring that the water in the water storage space 40 can be discharged out of the water storage tank 10 under the extrusion of the pressure tank 20, and the pressure P3 of the water storage space 40 is not greater than the water inlet pressure P1, so that water discharging and water inlet can be performed simultaneously.

[0049] As shown in Figure 4 , the water inlet 101 is communicated with a water inlet channel 60, and the water outlet 102 is communicated with a water outlet channel 70. A check reducing valve is arranged on the water inlet channel 60, a pressure relief valve is arranged at a position between the check reducing valve and the water inlet 101 and / or a pressure relief valve is arranged on the water outlet channel 70. The check reducing valve is configured to reduce the inlet water pressure to no more than P1, so as to prevent excessive inlet water pressure; meanwhile, the opening pressure of the pressure relief valve is P2, and P1<P0<P2, which prevents inlet water from being directly discharged through the pressure relief valve. A switch assembly 80 for opening and closing the water outlet channel 70 is arranged on the water outlet channel 70.

[0050] As shown in Figure 4 and Figure 5 , a control valve group 90 is arranged on the water inlet channel 60. The control valve group 90 comprises a valve body 100, and the valve body 100 is provided with a water inlet 1001, a water discharge port 1002 and a lower water outlet 1003 that are communicated with each other. The water inlet 1001 is communicated with a water supply source, the water discharge port 1002 is communicated with the water inlet 101, and the lower water outlet 1003 is communicated with a sewer passage; a first valve group 110 that opens along the water inlet direction is arranged at the water inlet 1001, a second valve group 120 that opens along the pressure relief direction is arranged at the lower water outlet 1003. The first valve group 110 forms the check reducing valve, the second valve group 120 forms the pressure relief valve, and the functions of the check reducing valve and the pressure relief valve are realized by a single control valve group 90, which improves the installation efficiency. Further, as shown in Figure 4 , the first valve group 110 comprises a first valve core 1101 movably arranged in the valve body 100 and a first elastic member 1102 sleeved outside the first valve core 1101, and the first elastic member 1102 is used to provide acting force for the first valve core 1101 to move it in the reverse direction of water inlet; the second valve group 120 comprises a second valve core 1201 movably arranged in the valve body 100 and a second elastic member 1202 sleeved outside the second valve core 1201, and the second elastic member 1202 is used to provide acting force for the second valve core 1201 to move it in the reverse direction of pressure relief.

[0051] As shown in Figure 1 and Figure 2As shown, the movable part 202 is provided with a recess 2021, and the deformable part 203 is located around the outside of the recess 2021. The space enclosed by the recess 2021 and the water storage tank 10 constitutes a water storage space 40. The recess 2021 increases the volume of the water storage space 40, increases the water storage capacity, thereby improving the water output time and expanding the applicable range of the heating / cooling device.

[0052] In this embodiment, the deformable part 203 is composed of a stretchable bellows, which is integrally formed or separately formed on the movable part 202; in other embodiments, it can also be composed of an elastic element. The fixed part 201 is provided with a charging / discharging port 2011 communicating with the pressure space 30. Gas is charged in through the charging / discharging port 2011, and the charging / discharging port 2011 is closed after the pressure in the pressure chamber reaches P0.

[0053] like Figure 1 As shown, the inner wall of the water storage tank 10 has a protrusion 103 extending radially inward in the middle. The movable part 202 can abut against the protrusion 103, thereby limiting the expansion degree of the pressure tank 20 and preventing the pressure tank 20 from over-expanding under the pressure of the pressure space 30, which could cause squeezing damage to the temperature control component 50 located in the water storage space 40.

[0054] like Figure 1 and Figure 2 As shown, the water storage space 40 is also equipped with a water inlet pipe 130. One end of the water inlet pipe 130 is connected to the water inlet 101, and the other end of the water inlet pipe 130 is located at the bottom of the water storage space 40, so that the water in the water storage space 40 is distributed in a way that is cold at the bottom and hot at the top. The hot water in the upper layer can be discharged from the water outlet 102 under the pressure of the water inlet pressure P1. Furthermore, the other end of the water inlet is connected to a water baffle 140 to prevent the water from rushing directly into the water storage space 40 and causing impact and compression to the moving part 202. Furthermore, a temperature sensor 150 is used to monitor the water temperature in the water storage space 40. The temperature sensor 150 and the temperature control component 50 are electrically connected to the control system. The control system turns on or off the temperature control component 50 based on whether the water temperature monitored by the temperature sensor 150 has reached the preset temperature. Specifically, the control system turns on the temperature control component 50 to heat the water. When the temperature monitored by the temperature sensor 150 is higher than the preset temperature, the control system turns off the temperature control component 50 and stops heating.

[0055] The working principle of the heating / cooling device proposed in this embodiment, taking the temperature control component 50 as an example using a heating element, is explained as follows:

[0056] 1) Water output status:

[0057] When the switch assembly 80 is turned on, the first valve group 110 opens. Water flows through the first valve group 110, and its pressure decreases to below P1. It then flows into the bottom of the water storage space 40 through the drain outlet 1002 and the inlet pipe 130. The hot water in the upper part of the water storage space 40 is discharged from the outlet 102 under the pressure of the inlet water pressure P1. During this process, P1 is not less than the pressure P3 of the water storage space 40, and the pressure P0 of the pressure space 30 is not less than the pressure P3 of the water storage space 40. The pressure tank 20 gradually expands.

[0058] 2) No water is being dispensed but the device is in heating mode:

[0059] When switch assembly 80 is turned off, the control system turns on temperature control assembly 50. During the heating process, the water expands due to heat, and the pressure P3 of the water storage space 40 gradually increases. When the pressure P3 of the water storage space 40 is greater than the pressure P0 of the pressure space 30, the deformation part 203 deforms, the pressure tank 20 is gradually compressed, and the volume of the water storage space 40 gradually increases, slowing down the rise of the pressure P3 of the water storage space 40. At this time, the pressure P3 of the water storage space 40 is greater than the local atmospheric pressure, so that the boiling point of the water in the water storage space 40 can reach above 120°. When the temperature sensor 150 detects that the water temperature has reached the preset temperature, the control system turns off temperature control assembly 50, and the pressure P3 of the water storage space 40 gradually stabilizes. After stabilization, the pressure P3 of the water storage space 40 is less than the opening pressure P2 of the second valve group 120. Since the pressure tank 20 gradually compresses and absorbs the expansion volume of the water storage space 40 under the pressure of the water storage space 40, no steam or water is discharged at this time.

[0060] 3) When the system fails:

[0061] When a malfunction occurs, such as the temperature control component 50 failing to close, the pressure P3 in the water storage space 40 continues to increase until it exceeds the opening pressure P2 of the second valve group 120. At this point, the second valve group 120 opens, releasing the pressure in the water storage space 40. Water and water vapor in the water storage space 40 flow out from the drain outlet 1003 until the pressure P3 in the water storage space 40 is less than the opening pressure P2 of the second valve group 120, at which point the second valve group 120 closes.

[0062] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A heating / cooling device, characterized by, include: The water storage tank is equipped with an inlet and an outlet. The pressure tank includes a fixed part, a movable part, and a deformable part. The movable part is movably and sealingly connected to the inner wall of the water storage tank, thereby dividing the water storage tank into a first space and a second space that are not interconnected. The first space constitutes a water storage space. The deformable part is disposed in the second space, and its two ends are respectively connected to the fixed part and the movable part. The space enclosed by the fixed part, the movable part, and the deformable part constitutes a pressure space. The inlet and outlet are connected to the water storage space. One end of the fixed part or the deformable part is fixedly connected to the water storage tank, and the movable part is displaced under the pressure of the water storage space, causing the pressure tank to expand and contract; and A temperature control component is used to heat or cool the water in the water storage space, causing the water in the water storage space to expand or contract, resulting in a change in pressure in the first space. The second space is used to absorb the pressure change in the first space.

2. A heating / cooling device as claimed in claim 1, characterized in that When water is introduced, the inlet pressure P1 is not greater than the pressure P0 of the pressure space; when water is discharged, the pressure P0 of the pressure space is not less than the pressure P3 of the water storage space, and the pressure P3 of the water storage space is not greater than the inlet pressure P1.

3. A heating / cooling device as claimed in claim 2, characterized in that The inlet is connected to an inlet water path, and the outlet is connected to an outlet water path. The inlet water path is equipped with a check valve and a pressure relief valve. A pressure relief valve is located between the check valve and the inlet water path, and / or a pressure relief valve is located in the outlet water path. The check valve limits the inlet water pressure to P1, and the pressure relief valve opens at a pressure of P2, where P1... <P0<P2。 4. A heating / cooling device as claimed in claim 3, characterized in that The water inlet circuit is equipped with a control valve group, which includes a valve body. The valve body has an inlet, a drain, and a drain outlet that are interconnected. The inlet is connected to a water supply source, the drain outlet is connected to the inlet, and the drain outlet is connected to a drainage channel. The inlet is provided with a first valve group that opens in the direction of water inflow, and the outlet is provided with a second valve group that opens in the direction of pressure relief. The first valve group constitutes the check valve and the second valve group constitutes the pressure relief valve.

5. The heating / cooling device of claim 1, wherein A sealing ring is fitted on the outer side of the movable part, and the movable part is movably and sealingly connected to the inner wall of the water storage tank through the sealing ring.

6. A heating / cooling device as claimed in claim 5, characterized in that The sealing ring is a Y-shaped sealing ring with the opening facing upwards. When water flows from the first space to the second space, the opening of the Y-shaped sealing ring opens to increase the sealing performance between the movable part and the inner wall of the water storage tank.

7. A heating / cooling device as claimed in claim 6, characterized in that The outer side of the movable part is also fitted with a wear-resistant gasket, the outer side of which slides against the inner wall of the water storage tank, and the wear-resistant gasket is located below the Y-shaped sealing ring.

8. The heating / cooling device of claim 1, wherein The movable part has a recess, and the deformable part is located around the outside of the recess. The space enclosed by the recess and the water storage tank constitutes the water storage space.

9. The heating / cooling device of claim 1, wherein The deformable part is composed of a stretchable bellows or an elastic element.

10. The heating / cooling device of claim 1, wherein The inner wall of the water storage tank has a protrusion extending radially inward in the middle, and the movable part can abut against the protrusion.

11. A heating / cooling device as claimed in claim 1, characterized in that The water storage space is also provided with a water inlet pipe, one end of which is connected to the water inlet, and the other end of which is arranged at the bottom of the water storage space and is provided with a water baffle.

12. A heating / cooling device as claimed in claim 1, characterized in that The second space constitutes a pressure buffer space for absorbing water hammer effect generated when the water inlet pressure is too high.

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