A kind of anti-mixing flow temperature control thrust structure for hot water storage tank and hot water storage tank

Abstract

The present invention discloses an anti-mixing flow temperature control thrust structure for a hot water storage tank, which belongs to the technical field of thrust structures, and includes a thrust body, a baffle, a thrust rod, a piston connected to the thrust rod, and the thrust body is a regular columnar structure. The thrust body has a first channel and a second channel interconnected therein, the cross-sectional area of ​​the first channel is 25-30 times the cross-sectional area of ​​the second channel, and the length of the second channel is 4-6 times the first channel; the piston is arranged in the second channel, and the piston divides the space connecting the first channel and the second channel into a pneumatic cavity and a push rod cavity, and the pneumatic cavity is filled with thrust gas, and the thrust gas is used to increase or decrease the volume when the temperature changes so that the thrust rod moves in the second channel. This scheme achieves the effect of preventing the mixing of cold and hot water through the design of the anti-mixing flow temperature control thrust structure, thereby preventing the water temperature from fluctuating when the hot water storage tank is discharged.

Description

Technical Field

[0001] The present invention relates to the technical field of thrust structures, and in particular to an anti-mixing flow temperature control thrust structure for a hot water storage tank and a hot water storage tank. Background Art

[0002] A heat storage tank is a container for storing hot water. It usually uses insulation materials and structural design to reduce heat loss and ensure that the temperature of the stored hot water remains stable for a long time. The heat storage tank can store the hot water generated by solar collectors, heat pumps and other equipment so that it can be used when needed to meet the hot water needs of users in different time periods. For example, in a solar water heating system, the heat collected by the collector during the day heats the water, and the hot water is stored in the heat storage tank for use at night or on cloudy days. At the same time, the heat storage tank is usually equipped with an auxiliary heating device. When the water temperature in the tank is lower than the set temperature, the auxiliary heating device will start to heat the water to the appropriate temperature to ensure a stable supply of hot water. The heat storage tank can provide users with a relatively stable supply of hot water.

[0003] When the existing hot water storage tank is in use, when the external hot water supply device such as the solar collector cannot continuously input hot water into the hot water storage tank, the hot water storage tank needs to input normal temperature water or unheated water from the water inlet when outputting hot water to the outside. These normal temperature water or unheated water will mix with the original hot water in the hot water storage tank, causing the normal temperature water or unheated water to be directly directed to the water outlet, and then the water temperature will fluctuate, seriously affecting the water use experience. If a device such as a temperature sensor is to be set to control the mixed flow, there is a risk of leakage and it is inconvenient to maintain. Therefore, the existing technology still has significant limitations in the temperature stability of the output hot water, and a new improvement solution is urgently needed to overcome these problems. Summary of the invention

[0004] In order to overcome the problems existing in the related art, an object of the present invention is to provide an anti-mixing flow temperature control thrust structure for a hot water storage tank and a hot water storage tank.

[0005] In a first aspect, the present application provides an anti-mixing flow temperature control thrust structure for a hot water storage tank.

[0006] The thrust body comprises a thrust body, a baffle, a thrust rod, and a piston connected to the thrust rod. The thrust body is a regular columnar structure. The thrust body has a first channel and a second channel interconnected therein. The cross-sectional area of ​​the first channel is 25-30 times the cross-sectional area of ​​the second channel. The length of the second channel is 4-6 times that of the first channel.

[0007] The piston is arranged in the second channel, the baffle is arranged outside the second channel, one end of the thrust rod is arranged in the second channel and fixedly connected to the piston, the other end of the thrust rod passes through the second channel and is hinged to the baffle, and the thrust rod is used to push the baffle to move;

[0008] The piston divides the space connecting the first channel and the second channel into a pneumatic chamber and a push rod chamber. The pneumatic chamber is filled with thrust gas, and the thrust gas is used to increase or decrease the volume when the temperature changes to make the thrust rod move in the second channel.

[0009] In one of the embodiments, it also includes an extension channel arranged in the extension direction of the second channel, the extension channel is arranged in the first channel and connected to the second channel, and the extension channel is used to provide space for the thrust rod and the piston to move toward the first channel.

[0010] In one embodiment, the second channel is coaxially arranged with the first channel.

[0011] In one embodiment, one end of the second channel is fixedly connected to the first channel, and the other end of the second channel is provided with a limit block, and the limit block is used to prevent the piston from being pushed out of the second channel.

[0012] In one of the embodiments, one end of the extension channel is fixedly connected to the first channel, and the other end of the extension channel is provided with a limit block, and the limit block is used to prevent the piston from being pushed out of the extension channel.

[0013] In one of the embodiments, the thrust gas is at least one of air, nitrogen, argon or helium, and the gas pressure of the thrust gas causes the piston to be at the bottom of the second channel when the water temperature is 20°C.

[0014] In one of the embodiments, the material of the baffle, the first channel, the second channel and the extended channel is selected from one of stainless steel, aluminum alloy, and polypropylene, and the material of the piston is selected from one or more of silicone rubber, fluororubber, polytetrafluoroethylene, and aluminum alloy; preferably, the piston is a structure in which the outer ring of an aluminum alloy is covered with silicone rubber, fluororubber, or polytetrafluoroethylene.

[0015] In the second aspect, the present application also provides a hot water storage tank including any of the above-mentioned anti-mixing flow temperature control thrust structures, and also includes an external heating device, a tank body, and an auxiliary heating module arranged in the tank body, and the tank body is provided with a water inlet, a water outlet and an exhaust port; the anti-mixing flow temperature control thrust structure is arranged on the inner wall of the tank body, and the anti-mixing flow temperature control thrust structure is used to improve the temperature stability of the hot water outlet from the tank body.

[0016] One end of the baffle is hinged to the inner wall of the box body, and the angle between the baffle and the inner wall of the box body moves within the range of 15°-90°. When the angle between the baffle and the inner wall of the box body is 80-90°, the baffle divides the inner cavity of the box body into a first hot water cavity and a second hot water cavity; the first hot water cavity is provided with a water inlet, the second hot water cavity is provided with a water outlet, a flow opening is provided between the first hot water cavity and the second hot water cavity, the baffle at least partially blocks the flow opening, and the thrust rod pushes the baffle to move to adjust the size of the flow opening.

[0017] In one embodiment, the first channel is hinged to the inner side wall of the second hot water chamber, and when the thrust rod is fully extended into the second channel, the angle between the baffle and the inner side wall of the box body is 15°-45°; when the thrust rod is fully extended out of the second channel, the angle between the baffle and the inner side wall of the box body is 80°-90°.

[0018] In one of the embodiments, two anti-mixing flow temperature control thrust structures are provided in the box body, and the anti-mixing flow temperature control thrust structures are symmetrically arranged on the inner side wall of the box body along the central axis of the box body, and the baffles of the two anti-mixing flow temperature control thrust structures at least partially block the flow opening.

[0019] In one embodiment, the water inlet is arranged at the bottom of the first hot water chamber, and the water outlet is arranged at the top of the second hot water chamber.

[0020] In one of the embodiments, the auxiliary heating module is fixedly disposed in the second hot water chamber.

[0021] The beneficial effects of the present invention are:

[0022] The anti-mixing flow temperature control thrust structure for a hot water storage tank provided in the present application can block the flow of fluid by moving its baffle, thereby achieving the effect of preventing the fluid from mixing. The present invention divides the space connecting the first channel and the second channel into a pneumatic chamber and a push rod chamber by a piston, and the pneumatic chamber is filled with thrust gas. According to the ideal gas state equation pV=nRT, p is pressure, V is volume, n is the amount of substance, R is the ideal gas constant, and T is the thermodynamic temperature; when the temperature changes, the thrust gas can increase in volume when the temperature rises and decrease in volume when the temperature decreases. Under the action of air pressure, the piston moves in the second channel, so that the thrust rod fixedly connected to the piston pushes the baffle to move.

[0023] Considering that the volume of a general gas does not change much with increasing or decreasing temperature, by setting a first channel and a second channel with different cross-sectional areas and lengths, the cross-sectional area of ​​the first channel is much larger than that of the second channel; since the first channel and the second channel are both regular columnar structures, at room temperature, the thrust gas is basically in the first channel, and when the temperature rises, the thrust gas enters the second channel with a smaller cross-sectional area and pushes the piston to move. The volume calculation formula of the regular columnar structure is V=Sh, where V is volume, S is bottom area, and h is height. By designing the cross-sectional area of ​​the first channel to be 25-30 times that of the cross-sectional area of ​​the second channel, and the length of the second channel to be 4-6 times that of the first channel, the piston and the thrust rod can still move to a large extent when the thrust gas volume increases slightly, thereby moving the baffle; when the temperature decreases, the volume decreases, and the thrust gas returns the baffle to its original position through the piston and the thrust rod.

[0024] The anti-mixing flow temperature control thrust structure of the present invention can be applied to a hot water storage tank. Since the present solution mainly realizes the increase or decrease of volume by the thrust gas as the temperature increases or decreases, thereby realizing the control of the movement of the baffle by the air pressure, when the temperature increases, the volume increases, and the thrust gas moves the baffle in the direction of blocking the flow of the fluid through the piston and the thrust rod, thereby achieving the effect of preventing the fluid from mixing. When the temperature decreases, the volume decreases, and the thrust gas returns the baffle to the original position through the piston and the thrust rod, so that the fluid in the tank can flow normally. The present solution has a simple structure and can be self-adjusted with the temperature, and does not need to be connected to a power supply or other electronic control devices, and the structure is simpler and more durable.

[0025] The water storage tank of the present invention is provided with at least one of the above-mentioned anti-mixing flow temperature control thrust structures in the tank body, and the size of the flow opening between the first hot water chamber and the second hot water chamber is adjusted by a baffle. When hot water starts to flow into the tank body, since the anti-mixing flow temperature control thrust structure is provided above the water storage tank, the baffle can be in an open state for a long time at the beginning. As the hot water quickly fills the water tank, the water temperature increases the gas temperature in the pneumatic cavity of the anti-mixing flow temperature control thrust structure through heat conduction or radiation, the gas volume increases, the thrust rod pushes the baffle to move, and the flow opening becomes smaller as the hot water temperature rises. When the hot water temperature in the tank body rises to the rated maximum temperature, the thrust rod pushes the baffle to move so that the size of the flow opening becomes the smallest at this time. When the family starts to use hot water in a centralized manner, the hot water in the heat storage tank starts to be consumed, and at the same time, water is continuously introduced into the water inlet to maintain the water pressure. When the hot water is consumed to a certain extent, the hot water supply produced by the external heating device is less than the consumed hot water, and the water temperature at the water inlet begins to drop. However, due to the small density of hot water and the continuous heating of the upper heating device, the water temperature around the anti-mixing temperature control thrust structure can still be at a high state, thereby keeping the baffle opening small, controlling the mixing of cold water at the water inlet and the hot water above, and extending the hot water supply time. When the hot water in the tank is completely used up, the overall water temperature of the tank drops, the thrust gas in the pneumatic cavity contracts, and the thrust rod pushes the baffle to move to make the flow opening larger. The water in the first hot water chamber and the second hot water chamber are mixed more evenly, so that the heating module in the tank can better heat the water in the first hot water chamber and the second hot water chamber at the same time, thereby achieving the effect of reducing the influence of cold water entering the tank on the stability of the outlet water temperature when using hot water, and heating the water in the tank without affecting its heating effect when the heating module heats the water.

[0026] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of a hot water storage tank with an anti-mixing flow temperature control thrust structure in Example 2 of the present invention when the hot water is exhausted;

[0029] Figure 2This is a schematic diagram of the overall structure of a hot water storage tank with an anti-mixing flow temperature control thrust structure in Example 2 of the present invention when the water temperature is high;

[0030] Figure 3 This is a structural schematic diagram of a state in which the thrust rod of the anti-mixing flow temperature control thrust structure in Embodiment 1 of the present invention is extended toward the first channel;

[0031] Figure 4 This is a structural schematic diagram of a state in which the thrust rod of the anti-mixing flow temperature control thrust structure in Example 1 of the present invention is extended in the opposite direction of the first channel;

[0032] Figure 5 This is a schematic diagram of the overall structure of a hot water storage tank with two anti-mixing flow temperature control thrust structures in Example 3 of the present invention when the water temperature is low;

[0033] Figure 6 This is a schematic diagram of the overall structure of a hot water storage tank with two anti-mixing flow temperature control thrust structures in Example 3 of the present invention when the water temperature is high;

[0034] Figure 7 For attachment Figure 5 A schematic diagram of the cross-sectional structure of a hot water storage tank when the water temperature is low;

[0035] Figure 8 For attachment Figure 6 Schematic diagram of the cross-sectional structure of a hot water storage tank when the water temperature is high.

[0036] Reference numerals:

[0037] 1. Anti-mixing flow temperature control thrust structure; 10. Thrust body; 101. First channel; 102. Second channel; 1020. Limit block; 103. Extension channel; 11. Baffle; 12. Thrust rod; 13. Piston; 2. Box body; 21. First hot water chamber; 22. Second hot water chamber; 23. Auxiliary heating module; 3. External heating device; 4. Water inlet; 5. Water outlet; 6. Exhaust port. DETAILED DESCRIPTION

[0038] The optional embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the optional embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0040] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0041] Unless otherwise specified, the methods and equipment used in the present invention are all conventional reagents, methods and equipment in the art.

[0042] In order to facilitate the understanding of the embodiments of the present invention, the hot water storage tank in the related art is first explained. In the prior art, when the hot water storage tank is used in a centralized manner, when the external hot water supply device such as the solar collector cannot continuously input hot water into the hot water storage tank, the hot water storage tank needs to input normal temperature water or unheated water from the water inlet when outputting hot water to the outside. These normal temperature water or unheated water will mix with the original hot water in the hot water storage tank, causing the water temperature in the hot water storage tank to drop as a whole, and then causing the output hot water temperature to drop. If the water inlet and the water outlet are not properly positioned, it may even cause normal temperature water or unheated water to be directly directed to the water outlet, resulting in the phenomenon of hot and cold water temperature, which seriously affects the water use experience. If other devices to avoid mixed flow are set in the box, there is a risk of leakage. Therefore, the prior art still has significant limitations in the temperature stability of the output hot water, and a new improvement scheme is urgently needed to overcome these problems. Based on this, the present application provides an anti-mixing temperature control thrust structure.

[0043] Example 1

[0044] As attached Figure 3-4 As shown, a first embodiment of the present application provides an anti-mixing flow temperature control thrust structure 1 for a hot water storage tank, comprising a thrust body 10, a baffle 11, a thrust rod 12, and a piston 13 connected to the thrust rod. The thrust body 10 is a regular columnar structure, and the thrust body 10 has a first channel 101 and a second channel 102 that are interconnected. The baffle 11 thrust rod 12 thrust rod 12 piston 13 first channel 101 first channel 101 second channel 102 first channel 101 second channel 102 The cross-sectional area of ​​the first channel 101 is 25-30 times the cross-sectional area of ​​the second channel 102.

[0045] The piston 13 is arranged in the second channel 102, the baffle 11 is arranged outside the second channel 102, one end of the thrust rod 12 is arranged in the second channel 102 and fixedly connected to the piston 13, and the other end of the thrust rod 12 passes through the second channel 102 and is hinged to the baffle 11, and the thrust rod 12 is used to push the baffle 11 to move.

[0046] The piston 13 divides the space connecting the first channel 101 and the second channel 102 into a pneumatic chamber and a push rod chamber. The pneumatic chamber is filled with thrust gas, which is used to increase or decrease the volume when the temperature changes to enable the thrust rod 12 to move in the second channel 102.

[0047] The movement of the baffle 11 can block the flow of the fluid, thereby preventing the fluid from mixing. In this embodiment, the space connecting the first channel 101 and the second channel 102 is divided into a pneumatic chamber and a push rod chamber by the piston 13, and the pneumatic chamber is filled with thrust gas. The push rod chamber is connected to the outside. According to the ideal gas state equation pV=nRT, p is pressure, V is volume, n is the amount of substance, R is the ideal gas constant, and T is the thermodynamic temperature. When the temperature changes, the thrust gas can increase in volume when the temperature rises and decrease in volume when the temperature drops. Under the action of gas pressure, the piston 13 moves in the second channel 102, so that the thrust rod 12 fixedly connected to the piston 13 pushes the baffle 11 to move.

[0048] According to the ideal gas state equation, when the temperature rises from 30°C to 60°C, the gas volume increases by about 10%. Considering that the volume of a general gas does not change much with increasing or decreasing temperature, the first channel 101 and the second channel 102 with different cross-sectional areas are provided, and the cross-sectional area of ​​the first channel 101 is much larger than that of the second channel 102. Since the first channel 101 and the second channel 102 are both regular columnar structures, the thrust gas is basically in the first channel 101 at room temperature. When the temperature rises, the thrust gas enters the second channel 102 with a smaller cross-sectional area and pushes the piston 13 to move. The volume calculation formula of the regular columnar structure is V=Sh, where V is the volume, S is the bottom area, and h is the height. By designing The cross-sectional area of ​​the first channel 101 is 25-30 times the cross-sectional area of ​​the second channel 102. The second channel 102 is coaxially arranged with the first channel 101. The length of the second channel 102 is 4-6 times that of the first channel 101, so that the piston 13 and the thrust rod 12 can still move to a large extent when the thrust gas volume increases slightly, thereby moving the baffle 11; when the temperature decreases, the volume decreases, and the thrust gas returns the baffle 11 to its original position through the piston 13 and the thrust rod 12; at the same time, the volume of the first channel 101 and the second channel 102 accounts for a very small proportion of the volume in the box 2, so the change in the thrust gas volume with temperature has a very small effect on the pressure in the box 2, which can be almost ignored.

[0049] The anti-mixing flow temperature control thrust structure 1 of this embodiment can be applied to hot water storage devices such as heat storage tanks and electric water heaters. Since this solution mainly increases or decreases the volume by the thrust gas as the temperature increases or decreases, thereby controlling the movement of the baffle 11 through air pressure, when the temperature increases, the volume increases, and the thrust gas moves the baffle 11 in the direction of blocking the flow of the fluid through the piston 13 and the thrust rod 12, thereby achieving the effect of preventing the fluid from mixing. When the temperature decreases, the volume decreases, and the thrust gas returns the baffle 11 to its original position through the piston 13 and the thrust rod 12, so that the fluid in the box 2 can flow normally. This solution has a simple structure and can be self-adjusted with the temperature, and does not require a temperature sensor or other electronic control device, and is suitable for use in heat storage tanks.

[0050] In an optional manner in the embodiment of the present invention, the other end of the thrust rod 12 passes through the second channel 102 and is hinged to the midpoint of the height of the baffle 11, for example Figure 1-2 As shown, the midpoint of the height of the baffle 11 can be understood as the midpoint of the height of the baffle when it is vertical. In actual applications, the thrust rod 12 is hinged to the midpoint of the height of the baffle 11, which can make the force on the baffle 11 more uniform and the movement effect of the baffle 11 more stable. In an optional manner in an embodiment of the present invention, the pneumatic cavity is filled with thrust gas, so that the thrust gas can better push the thrust rod 12 to move.

[0051] An optional manner in the embodiment of the present invention further includes an extension channel 103 arranged in the extension direction of the second channel 102, wherein the extension channel 103 is arranged in the first channel 101 and connected to the second channel 102, and the extension channel 103 is used to provide a space for the thrust rod 12 and the piston 13 to move toward the first channel 101; refer to the attached Figure 3-4 At room temperature, the thrust gas is basically in the first channel 101. When the temperature rises, the thrust gas enters the second channel 102 with a smaller cross-sectional area and pushes the piston 13 to move. When the temperature drops, the volume decreases, and the thrust gas passes through the piston 13 and the thrust rod 12 to return the baffle 11 to its original position. In some special cases, such as when the ambient temperature drops or it is winter, the temperature will drop further, and the volume of the thrust gas will drop further, causing the thrust rod 12 and the piston 13 to move further toward the first channel 101. By setting the extension channel 103, the thrust rod 12 and the piston 13 can move toward the first channel 101 along the extension channel 103. The cross-sectional area of ​​the first channel 101 is much larger than that of the second channel 102. If the extension channel 103 is not provided, the piston 13 and the thrust rod 12 may fall into the first channel 101 when the temperature further decreases, and the piston 13 and the thrust rod 12 cannot move back to the second channel 102 when the temperature rises. By providing the extension channel 103, the applicable temperature range of the anti-mixing flow temperature control thrust structure 1 of this embodiment can be expanded. In another embodiment, one end of the extension channel 103 is fixedly connected to the second channel 102, and the other end of the extension channel 103 is provided with a limit block to further ensure that the piston 13 and the thrust rod 12 will not fall into the first channel 101.

[0052] Optionally, the second channel 102 is coaxially arranged with the first channel 101, that is, the axes of the first channel 101 and the second channel 102 are on the same straight line. It can be understood that when the first channel 101 and the second channel 102 are both regular columnar structures and the second channel 102 is coaxially arranged with the first channel 101, that is, the piston 13 and the thrust rod 12 also move along the same axis of the first channel 101 and the second channel 102, the thrust gas can evenly push the piston 13 to move, so that the piston 13 and the thrust rod 12 are more evenly stressed.

[0053] In an optional manner in the embodiment of the present invention, one end of the second channel 102 is fixedly connected to the first channel 101, and a limit block 1020 is provided at the other end of the second channel 102, and the limit block 1020 is used to prevent the piston 13 from being pushed out of the second channel 102. By providing the limit block 1020 at the other end of the second channel 102, a limiting effect is provided when the piston 13 moves in the opposite direction of the first channel 101, so as to prevent the piston 13 from being pushed out of the second channel 102 when the water temperature in the box 2 is too high; optionally, the limit block 1020 may be a block structure symmetrically arranged on the other end of the second channel 102, or the limit block 1020 may be a circular ring structure arranged on the other end of the second channel 102, and the shape of the limit block 1020 is not specifically limited in this embodiment; it should be noted that the second channel 102 is in a connected state with the outside, and the limit block 1020 cannot seal and isolate the second channel 102 from the outside.

[0054] Optionally, the first channel 101 is integrally formed with the second channel 102. In an optional manner in the embodiment of the present invention, the regular columnar structure is a columnar structure with a circular, quadrilateral, pentagonal or hexagonal cross section. It can be understood that when the cross section is circular, the regular columnar structure is a cylindrical structure; when the cross section is a quadrilateral, optionally, the cross section can be a square or a rectangle, and the regular columnar structure is a cuboid; when the cross section is a pentagon or a hexagon, the regular columnar structure is a corresponding pentagonal prism or hexagonal prism, and the pentagon can be a regular pentagon or other pentagons, which are not listed one by one in this embodiment.

[0055] In an optional manner in an embodiment of the present invention, the material of the baffle, the first channel, and the second channel is selected from one of stainless steel, aluminum alloy, and polypropylene, and the material of the piston is selected from one of silicone rubber, fluororubber, polytetrafluoroethylene, and aluminum alloy or more; optionally, the piston is an aluminum alloy with an outer ring having a structure of silicone rubber, fluororubber, and polytetrafluoroethylene, and the material of the baffle, the first channel, and the second channel is selected from an aluminum alloy.

[0056] In an optional manner in an embodiment of the present invention, the thrust gas is at least one of air, nitrogen, argon or helium. It can be understood that air, nitrogen, argon or helium are commonly used gases with high stability and are suitable for being used as thrust gases for driving the thrust rod 12 to move. The gas pressure of the thrust gas makes the piston 13 at the bottom of the second channel 102 when the water temperature is 20°C, which just makes the piston 13 no longer slide up and down in the first channel 101. If the pressure is further increased or decreased, the piston 13 slides relative to the second channel 102.

[0057] Example 2

[0058] Reference Figure 1-2, a hot water storage tank including any of the above-mentioned anti-mixing flow temperature control thrust structures 1 provided in embodiment 2 of the present application, further comprising an external heating device 3, a tank body 2, and an auxiliary heating module 23 arranged in the tank body, a tank body 2 anti-mixing flow temperature control thrust structure 1, a tank body 2 auxiliary heating module 23, the tank body 2 is provided with a water inlet 4, a water outlet 5 and an exhaust port 6; the anti-mixing flow temperature control thrust structure 1 is arranged on the inner wall of the tank body 2.

[0059] Among them, one end of the baffle 11 is hinged to the inner wall of the box body 2, and the angle between the baffle 11 and the inner wall of the box body 2 is movable in the range of 15°-90°. When the angle between the baffle 11 and the inner wall of the box body 2 is 80-90°, the baffle 11 divides the inner cavity of the box body 2 into a first hot water cavity 21 and a second hot water cavity 22. The first channel 101 of the anti-mixing flow temperature control thrust structure 1 is hinged to the inner wall of the second hot water cavity 22. The first hot water cavity 21 is provided with a water inlet 4, and the second hot water cavity 22 is provided with a water outlet 5. A flow opening is provided between the first hot water cavity 21 and the second hot water cavity 22. The baffle 11 forms an opening and closing angle with the inner wall of the box body to open or cover the flow opening, and the thrust rod 12 pushes the baffle 11 to move to adjust the size of the flow opening.

[0060] When hot water starts to flow into the box body 2, since the anti-mixing flow temperature control thrust structure 1 is arranged above the hot water storage tank, the baffle 11 can be in the open state for a long time at the beginning. As the hot water quickly fills the water tank, the water temperature causes the gas temperature in the pneumatic cavity of the anti-mixing flow temperature control thrust structure 1 to increase through heat conduction or radiation, and the gas volume increases. The thrust rod 12 pushes the baffle 11 to move, and the flow opening becomes smaller as the hot water temperature rises. When the hot water temperature in the box body 2 rises to the rated maximum temperature, the thrust rod 12 pushes the baffle 11 to move so that the size of the flow opening becomes the smallest at this time. When the family starts to use hot water in a concentrated manner, the hot water in the hot water storage tank begins to be consumed, and at the same time, water is continuously introduced into the water inlet 4 to maintain the water pressure. When the hot water is consumed to a certain extent, the hot water supply produced by the external heating device 3 is less than the consumed hot water, and the water temperature at the water inlet 4 begins to drop. However, due to the low density of hot water and the continuous heating of the auxiliary heating module 23, the water temperature around the anti-mixing flow temperature control thrust structure 1 can still be at a high state, thereby keeping the opening of the baffle 11 small, controlling the mixing of the cold water at the water inlet 4 and the hot water above, and extending the hot water supply time. When the hot water in the box 2 is completely used up, the overall water temperature of the box 2 drops, the thrust gas in the pneumatic cavity contracts, and the thrust rod 12 pushes the baffle 11 to move so that the flow opening becomes larger, and the water in the first hot water cavity 21 and the second hot water cavity 22 are mixed more evenly, so that the auxiliary heating module 23 in the box 2 can better heat the water in the first hot water cavity 21 and the second hot water cavity 22 at the same time, thereby achieving the effect of reducing the influence of the cold water entering the box 2 on the stability of the water outlet temperature when using hot water, and also heating the water in the box 2 by the auxiliary heating module 23 without affecting its heating effect. Among them, Figure 1 This is a schematic diagram of the overall structure of a hot water storage tank with an anti-mixing flow temperature control thrust structure in Example 2 of the present invention when the hot water is exhausted; Figure 2 This is a schematic diagram of the overall structure of the hot water storage tank in Example 2 of the present invention when the water temperature is high.

[0061] It should be noted that the external heating device 3 can be a conventional hot water heating device such as a solar collector or a heat pump.

[0062] In an optional manner in an embodiment of the present invention, the shape of the baffle 11 can be the same as or similar to the shape of the fluid channel (can also be understood as the same as or similar to the cross-sectional shape of the box body 2), and the baffle 11 is used to block most of the flow openings. For example, if the cross-section of the box body 2 is rectangular, the shape of the baffle 11 can be rectangular, but the baffle 11 cannot completely overlap with the cross-section of the box body 2.

[0063] In an optional manner in the embodiment of the present invention, the auxiliary heating module 23 can be a resistance heating rod or an externally wound heating coil, which is used to heat the hot water in the box 2.

[0064] In an optional manner in an embodiment of the present invention, the flow opening is arranged in the middle of the box body 2, the first hot water chamber 21 and the second hot water chamber 22 are symmetrically arranged on the upper and lower sides of the box body 2, and one end of the baffle 11 is hinged to the middle of the inner side of the box body 2, so that the baffle 11 is exactly in the flow opening position when the water temperature is the highest, so that the flow opening is minimized, and the mixing of water between the first hot water chamber 21 and the second hot water chamber 22 is limited to the maximum extent.

[0065] It should be noted that the baffle 11 is smaller than the flow opening, that is, the baffle 11 cannot completely cover the flow opening, and there is still space for water to flow between the first hot water chamber 21 and the second hot water chamber 22 .

[0066] It should also be noted that when the water temperature is the highest, the baffle 11 can block most of the flow openings, and there is still a flow opening with an area at least equivalent to the water inlet 4 for water to flow between the first hot water chamber 21 and the second hot water chamber 22.

[0067] According to an optional method in an embodiment of the present invention, when the thrust rod 12 is fully extended into the second channel 102, the angle formed by the baffle 11 and the inner wall of the box body 2 is 15°-45°; when the thrust rod 12 is fully extended out of the second channel 102, the angle formed by the baffle 11 and the inner wall of the box body 2 is 80°-90°; by setting a certain tilt angle, it is easier for the baffle 11 to block the flow opening when the water temperature rises, and the structural design is simpler.

[0068] Optionally, when the thrust rod 12 is fully extended into the second channel 102, the angle formed between the baffle 11 and the inner wall of the box body 2 is 45°; when the thrust rod 12 is fully extended out of the second channel 102, the angle formed between the baffle 11 and the inner wall of the box body 2 is 90°, the angle formed between the moving direction of the thrust rod 12 and the inner wall of the box body 2 is 45°, and the angle formed between the moving direction of the thrust rod 12 and the baffle 11 is 45°.

[0069] Optionally, the first channel 101 can be hinged to the inner wall of the second hot water chamber 22 through a connecting seat. It can be understood that the connecting seat is fixed on the inner wall of the second hot water chamber 22, and the edge of the first channel 101 close to the baffle 11 is hinged to the connecting seat, so that the first channel 101 can rotate on the connecting seat.

[0070] Example 3

[0071] Reference Figure 5-8Two anti-mixing flow temperature control thrust structures 1 are provided in the box body 2, and the anti-mixing flow temperature control thrust structures 1 are symmetrically arranged on the side walls of the box body 2 along the central axis of the box body 2. The baffles 11 of the two anti-mixing flow temperature control thrust structures 1 at least partially block the flow opening; by setting two anti-mixing flow temperature control thrust structures 1, the baffles 11 are pushed from both sides to block the flow opening, so that the force required for the baffle 11 is smaller, the movement of the baffle 11 is more sensitive, and the control effect is better.

[0072] It should be noted that the sum of the areas of the baffles 11 of the two anti-mixing flow temperature control thrust structures 1 is smaller than the area of ​​the flow opening, that is, the sum of the baffles 11 of the two anti-mixing flow temperature control thrust structures 1 cannot completely cover the flow opening, and there is still space for water to flow between the first hot water chamber 21 and the second hot water chamber 22.

[0073] It should also be noted that when the water temperature is the highest, the baffle 11 can block most of the flow openings, and there is still a flow opening of at least the same area as the water inlet 4 for the water to flow between the first hot water chamber 21 and the second hot water chamber 22; by blocking with two baffles 11, the baffle area and the length of the thrust rod can be reduced proportionally, that is, the rotation angle of the two baffles 11 can be the same as the rotation angle of a single baffle 11, and at the same time, the force required for the thrust gas of the anti-mixing flow temperature control thrust structure 1 is smaller, so that the thrust gas's control of the movement of the baffle 11 is more flexible and efficient.

[0074] In an optional manner in an embodiment of the present invention, the shapes of the baffles 11 of the two anti-mixing flow temperature control thrust structures 1 can be the same as or similar to the shape of the fluid channel (can also be understood as the same as or similar to the cross-section of the box body 2), and the baffles 11 are used to block most of the flow openings; for example, if the cross-section of the box body 2 is circular, the baffles 11 of the two anti-mixing flow temperature control thrust structures 1 can be semicircular in shape respectively.

[0075] In an optional manner in an embodiment of the present invention, the water inlet 4 is arranged at the bottom of the first hot water chamber 21, and the water outlet 5 is arranged at the top of the second hot water chamber 22. By setting the positions of the water inlet 4 and the water outlet 5, the water flow path in the box body 2 is made longer, so that the newly entered cold water has less impact on the hot water output from the second hot water chamber 22.

[0076] Preferably, the exhaust port 6 is disposed on the top of the housing 2, and the exhaust port 6 is used to exhaust air after installation and maintenance, or to prevent danger caused by excessive pressure due to changes in water temperature or other reasons.

[0077] In an optional manner in an embodiment of the present invention, the auxiliary heating module 23 is fixedly arranged in the second hot water chamber 22. By arranging the auxiliary heating module 23 in the second hot water chamber 22, when starting to output hot water, the auxiliary heating module 23 can preferentially heat the water in the second hot water chamber 22, so that the temperature of the hot water output from the water outlet 5 is more stable, thereby being able to output hot water with higher and more stable temperature for a longer time.

[0078] Example 4

[0079] A hot water storage tank with a capacity of 218L, a height and a bottom diameter of 1675mm and 520mm respectively, a baffle 11 of 500mm in length, a thrust rod 12 hinged at the midpoint of the height of the baffle 11, that is, a distance between the midpoint of the baffle 11 and the side wall of the box body is 250mm, and a distance between the anti-mixing flow temperature control thrust structure 1 and a point where the baffle 11 and the side wall of the box body meet is 250mm, when the cross-sectional area of ​​the first channel 101 is 25 times the cross-sectional area of ​​the second channel 102, and when the water temperature in the box body is the lowest point of 20°C, the thrust gas just fills the first channel 101, and there is no thrust gas in the second channel 102;

[0080] When hot water has not yet been introduced into the box 2, assuming that the initial temperature of the box 2 is 20°C, the thrust rod 12 is fully extended into the second channel 102. At this time, the length of the thrust rod 12 is set to 162 mm, wherein the height of the first channel 101 is 29 cm and the cross-sectional area is 25 cm. 2 , the second channel 102 is 136cm and the cross-sectional area is 1cm 2 , the cross-sectional area of ​​the extended channel 103 is 1cm 2 , length 27cm, the angle between the baffle 11 and the bottom of the box 2 is about 45°, when the hot water with a temperature of 75°C is introduced into the hot water storage tank, as the hot water gradually fills the hot water storage tank, the heat conduction causes the thrust gas in the second channel 102 to expand due to heat. According to the ideal gas state equation pV=nRT, when the thermodynamic temperature T increases from 293.15K to 348.15K, under the condition of constant pressure, the gas volume V increases by 18.76%, and the increased gas volume enters the second channel 102 to move the thrust rod 12; at this time, the length of the anti-mixing flow temperature control thrust structure 1 is 327cm, at this time, the angle between the baffle 11 and the bottom of the box 2 is about 82°, at a temperature of 40°C, the flow rate of 10L per minute is continuously used, and the water storage tank is connected to a heating device with a power of 3.6kW, which can provide hot water for the hot water storage tank, and the hot water storage tank is equipped with a heating module as an auxiliary, with a power of 2kW, which can be used for 4 hours of continuous use and then the water temperature drops to less than 40°C.

[0081] Example 5

[0082] A hot water storage tank with a capacity of 500L, a height and a bottom diameter of 1900mm and 710mm respectively, a baffle 11 of 690mm in length, a thrust rod 12 hinged at the midpoint of the height of the baffle 11, that is, a distance between the midpoint of the baffle 11 and the side wall of the box body 2 is 345mm, so that the distance between the anti-mixing flow temperature control thrust structure 1 and the point where the baffle 11 and the side wall of the box body 2 meet is 345mm, when the cross-sectional area of ​​the first channel 101 is 30 times the cross-sectional area of ​​the second channel 102, and when the water temperature in the box body 2 is the lowest point of 20°C, the thrust gas just fills the first channel 101, and there is no thrust gas in the second channel 102;

[0083] When hot water is not yet introduced into the box 2, assuming that the initial temperature in the box is 20°C, the thrust rod 12 is fully extended into the second channel 102. At this time, the length of the thrust rod 12 is set to 225 mm, wherein the height of the first channel 101 is 39 cm and the cross-sectional area is 30 cm. 2 , the second channel 102 is 215cm and the cross-sectional area is 1cm 2 , the cross-sectional area of ​​the extended channel 103 is 1cm 2 , length 10cm, the angle between the baffle 11 and the bottom of the box 2 is about 45°, when the hot water with a temperature of 75°C is introduced into the hot water storage tank, as the hot water gradually fills the hot water storage tank, the heat conduction causes the thrust gas in the second channel 102 to expand due to heat. According to the ideal gas state equation pV=nRT, when the thermodynamic temperature T increases from 293.15K to 348.15K, under the condition of constant pressure, the gas volume V increases by 18.76%, and the increased gas volume enters the second channel 102 to move the thrust rod 12; at this time, the length of the anti-mixing flow temperature control thrust structure 1 is 479cm, at this time, the angle between the baffle 11 and the bottom of the box 2 is about 88°, at a temperature of 40°C, the flow rate of 10L per minute is continuously used, and the water storage tank is connected to a heating device with a power of 5kW to provide hot water for the hot water storage tank. At the same time, a heating module is installed inside the hot water storage tank as an auxiliary, with a power of 3kW, which can be used for 6.4 hours of continuous use before the water temperature drops to less than 40°C.

[0084] Comparative Example 1

[0085] The water storage heater has the same volume as that of Example 4, except that the anti-mixing flow temperature control thrust structure 1 is not provided. After being filled with hot water at a water temperature of 75°C, hot water is continuously used at a temperature of 40°C and a flow rate of 10L per minute. At the same time, a heating device with a power of 3.6kW is connected to the outside of the water storage heater, which can provide hot water for the water storage tank. At the same time, a heating module with a power of 2kW is installed inside the water storage tank as an auxiliary, which can be used for continuous use for 2.5 hours before the water temperature drops to less than 40°C.

[0086] Comparative Example 2

[0087] The water storage heater has the same volume as that in Example 5, except that the anti-mixing flow temperature control thrust structure 1 is not provided. After being filled with hot water at a water temperature of 75°C, hot water is continuously used at a temperature of 40°C and a flow rate of 10L per minute. At the same time, a heating device with a power of 5kW is connected to the outside of the water storage heater, which can provide hot water for the water storage tank. At the same time, a heating module with a power of 3kW is installed inside the water storage tank as an auxiliary, which can be used for 4.5 hours of continuous use before the water temperature drops to less than 40°C.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hot water storage tank, characterized in that: It includes an anti-mixing flow temperature control thrust structure, which includes a thrust body, a baffle, a thrust rod, and a piston connected to the thrust rod. The thrust body is a regular columnar structure, and the thrust body has a first channel and a second channel interconnected therein, the cross-sectional area of ​​the first channel is 25-30 times the cross-sectional area of ​​the second channel, and the length of the second channel is 4-6 times that of the first channel; The piston is arranged in the second channel, the baffle is arranged outside the second channel, one end of the thrust rod is arranged in the second channel and fixedly connected to the piston, the other end of the thrust rod passes through the second channel and is hinged to the baffle, and the thrust rod is used to push the baffle to move; The piston divides the space connecting the first channel and the second channel into a pneumatic chamber and a push rod chamber, the pneumatic chamber is filled with thrust gas, and the thrust gas is used to increase or decrease the volume when the temperature changes so as to move the thrust rod in the second channel; It also includes an external heating device, a box, and an auxiliary heating module arranged in the box, wherein the box is provided with a water inlet, a water outlet, and an exhaust port; the anti-mixing flow temperature control thrust structure is arranged on the inner wall of the box, and the anti-mixing flow temperature control thrust structure is used to improve the temperature stability of the hot water outlet of the box; One end of the baffle is hinged to the inner wall of the box body, and the angle between the baffle and the inner wall of the box body is movable in the range of 15°-90°. When the angle between the baffle and the inner wall of the box body is 80-90°, the baffle divides the inner cavity of the box body into a first hot water cavity and a second hot water cavity; the first hot water cavity and the second hot water cavity are symmetrically arranged on the upper and lower sides of the box body, and the first hot water cavity is located at the lower side of the second hot water cavity; the first hot water cavity is provided with a water inlet, and the second hot water cavity is provided with a water outlet, and a flow opening is provided between the first hot water cavity and the second hot water cavity, and the baffle at least partially blocks the flow opening, and the thrust rod pushes the baffle to move to adjust the size of the flow opening; the auxiliary heating module is fixedly arranged in the second hot water cavity.

2. The hot water storage tank according to claim 1, characterized in that: The anti-mixing flow temperature control thrust structure also includes an extension channel arranged in the extension direction of the second channel, the extension channel is arranged in the first channel and connected to the second channel, and the extension channel is used to provide space for the thrust rod and the piston to move toward the first channel.

3. The hot water storage tank according to claim 1, characterized in that: The second channel is coaxially arranged with the first channel.

4. The hot water storage tank according to claim 2, characterized in that: One end of the second channel is fixedly connected to the first channel, and a limit block is provided at the other end of the second channel, and the limit block is used to prevent the piston from being pushed out of the second channel; one end of the extended channel is fixedly connected to the first channel, and a limit block is provided at the other end of the extended channel, and the limit block is used to prevent the piston from being pushed out of the extended channel.

5. The hot water storage tank according to claim 1, characterized in that: The thrust gas is at least one of air, nitrogen, argon or helium, and the gas pressure of the thrust gas makes the piston at the bottom of the second channel when the water temperature is 20°C.

6. The hot water storage tank according to claim 1, characterized in that: The first channel is hinged to the inner side wall of the second hot water chamber. When the thrust rod is fully extended into the second channel, the angle between the baffle and the inner side wall of the box body is 15°-45°; when the thrust rod is fully extended out of the second channel, the angle between the baffle and the inner side wall of the box body is 80°-90°.

7. The hot water storage tank according to claim 1, characterized in that: Two anti-mixing flow temperature control thrust structures are arranged in the box body, and the anti-mixing flow temperature control thrust structures are symmetrically arranged on the inner side wall of the box body along the central axis of the box body. The baffles of the two anti-mixing flow temperature control thrust structures at least partially cover the flow opening.

8. The hot water storage tank according to claim 1, characterized in that: The water inlet is arranged at the bottom of the first hot water chamber, and the water outlet is arranged at the top of the second hot water chamber.

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