Solar heat storage water tank suitable for alpine regions and solar heat collection system

Abstract

The invention discloses a solar heat storage water tank suitable for alpine regions and a solar heat collection system.The solar heat storage water tank suitable for the alpine regions comprises a tank body, a first plate, a second plate and a first heat storage assembly, and the tank body is provided with an inner cavity; the first plate and the second plate are arranged in the inner cavity to divide the inner cavity into a first chamber and a second chamber, one of the first plate and the second plate can move relative to the other to adjust the sizes of the first chamber and the second chamber, at least one of the first plate and the second plate is provided with a first hole and a first valve, the first hole is used for communicating the first chamber with the second chamber, and the second hole is used for communicating the second chamber with the first valve. The first valve is used for controlling opening and closing of the first hole; the first heat storage assembly is arranged in the first chamber, and the first heat storage assembly is provided with a shell and a phase change medium filled in the shell. The heat storage effect can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of solar energy heat collection, and in particular relates to a solar energy heat storage water tank and a solar energy heat collection system suitable for high-cold areas. Background Art

[0002] The climate in high-altitude and cold regions is harsh, the ambient temperature is low, and due to the long heating cycle and high energy demand, the heating cost is too high if coal or electricity is used to supply energy.

[0003] The related technology uses solar energy for heat collection and heating, which solves the heating needs to a certain extent, but faces the problem of energy storage and heat storage. Due to the limitation of lighting time, the period of sufficient lighting can meet the heating energy consumption demand, but when the light is insufficient, especially at night, it is difficult to meet the heating energy consumption demand for a longer period of time. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention proposes a solar water storage tank suitable for high-cold areas that can improve heat storage effects.

[0007] An embodiment of the present invention provides a solar thermal collection system.

[0008] The solar water storage tank suitable for high-cold areas according to the embodiment of the present invention comprises:

[0009] A box body, wherein the box body has an inner cavity;

[0010] a first plate and a second plate, the first plate and the second plate being arranged in the inner cavity to separate the inner cavity into a first chamber and a second chamber, one of the first plate and the second plate being movable relative to the other to adjust the size of the first chamber and the second chamber, at least one of the first plate and the second plate being provided with a first hole and a first valve, the first hole being used to connect the first chamber and the second chamber, and the first valve being used to control the opening and closing of the first hole;

[0011] The first heat storage component is arranged in the first chamber, and the first heat storage component has an outer shell and a phase change medium filled in the outer shell.

[0012] The solar water storage tank suitable for high-cold areas in the embodiment of the present invention can change the volume of the working fluid in the first chamber by changing the space size of the first chamber. In the initial stage of solar heat collection and heating startup, the solar heat collection and heating startup speed can be accelerated by reducing the volume of the working fluid in the first chamber. When the light intensity is sufficient, energy storage and heat storage can be achieved by increasing the volume of the working fluid in the first chamber, thereby increasing the heating time. The first heat storage component can use the phase change medium to store energy by absorbing heat when the light is sufficient, and can extend the heating time by releasing heat when the light is insufficient.

[0013] In some embodiments, the box body includes a first shell, a second shell and a first thermal insulation layer, the first shell is sleeved on the outside of the second shell, and the first thermal insulation layer is arranged between the first shell and the second shell.

[0014] In some embodiments, the cross-sections of the first shell and the second shell are both circular;

[0015] And / or, the first insulation layer is formed by polyurethane foaming, the thickness of the first insulation layer is 15 mm to 45 mm, and the density of the first insulation layer is 41 kg / m 3 Up to 45kg / m 3 , the closed porosity of the first thermal insulation layer is not less than 96%;

[0016] And / or, a tie rod is provided between the first shell and the second shell, or on the inner wall of the second shell.

[0017] In some embodiments, the inner cavity is a cylindrical cavity, the lengths of the first plate and the second plate extend along the axial direction of the inner cavity and abut against the axial end face of the inner cavity, the first plate is fixedly connected to the box body, and the second plate is rotatably connected to the box body; one end of the first plate in the width direction and one end of the second plate in the width direction are close to the middle of the inner cavity and abut against each other, the other end of the first plate in the width direction and the other end of the second plate in the width direction abut against the radial side wall of the inner cavity, and the cross-sections of the first chamber and the second chamber are both fan-shaped.

[0018] In some embodiments, it further comprises a first driving unit, the first driving unit is connected to the second plate and is used to drive the second plate to rotate relative to the box body, and the first driving unit is linked to the first valve;

[0019] And / or, the first hole is provided at a lower portion of the first plate and / or the second plate, and the number of the first holes is plural;

[0020] And / or, the first plate and the second plate both include a third shell and a second thermal insulation layer, and the second thermal insulation layer is filled in the third shell;

[0021] And / or, the volume of the first chamber is greater than the volume of the second chamber.

[0022] In some embodiments, the housing has a first surface close to the second chamber and a second surface away from the second chamber, a first area is formed between the first surface and the first plate and the second plate, and a second area is formed between the second surface and the wall of the inner cavity.

[0023] In some embodiments, the thermal conductivity of the first surface is greater than the thermal conductivity of the second surface;

[0024] And / or, the first heat storage assembly is located at the upper part of the first chamber, and the distance between the lower end of the first heat storage assembly and the bottom surface of the first chamber is 400 mm to 1200 mm;

[0025] And / or, further comprising a first inlet, a first outlet, a second inlet and a second outlet, wherein the first inlet and the first outlet are used to be connected to a solar thermal collector, the second inlet and the second outlet are used to be connected to a heating device, the first inlet and the second outlet are arranged in communication with the first region, the first outlet is arranged in communication with the second region, and the second inlet is arranged in communication with the lower portion of the first chamber;

[0026] and / or, further comprising a third inlet, the third inlet being used to replenish water into the inner cavity, the third inlet being in communication with an upper portion of the second chamber;

[0027] And / or, the first surface is an inner concave arc surface, and the second surface is an outer convex arc surface.

[0028] In some embodiments, the first heat storage assembly is arranged obliquely relative to the axial direction of the inner cavity, and the distance between the lower end of the first heat storage assembly and the second chamber is smaller than the distance between the upper end of the first heat storage assembly and the second chamber.

[0029] In some embodiments, it also includes a heat exchange coil, the heat exchange coil is located in the first room, the water inlet and the water outlet of the heat exchange coil extend to the outside of the box, the water inlet of the heat exchange coil is used to connect to a water source, and the water outlet of the heat exchange coil is used to connect to domestic water equipment;

[0030] And / or, it also includes an electric heating component, which is arranged at the lower part of the inner cavity, and the number of the electric heating components is multiple.

[0031] The solar thermal collection system of the embodiment of the present invention comprises a heat collection device and the solar water storage tank suitable for high-cold areas as described above, wherein the heat collection device is connected to the solar water storage tank suitable for high-cold areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of a solar water storage tank suitable for high-cold areas according to an embodiment of the present invention.

[0033] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the MM direction.

[0034] Figure 3 It is a schematic diagram of the arrangement structure of the first heat storage assembly relative to the axis of the box body according to an embodiment of the present invention.

[0035] Figure 4 Schematic diagram of the unfolded structure of the box body in the embodiment of the present invention.

[0036] Reference numerals:

[0037] 100. Solar water storage tanks suitable for high-altitude cold areas;

[0038] 1. Box body; 11. Inner cavity; 12. First shell; 13. Second shell; 14. First insulation layer; 15. First chamber; 151. First area; 152. Second area; 16. Second chamber;

[0039] 21. first plate; 211. third shell; 212. second heat-insulating layer; 22. second plate; 23. first driving part; 24. first hole;

[0040] 3. first heat storage component; 31. housing; 311. first surface; 312. second surface; 32. phase change medium;

[0041] 41. First inlet; 42. First outlet; 43. Second inlet; 44. Second outlet; 45. Third inlet;

[0042] 5. Heat exchange coil; 51. Water inlet; 52. Water outlet;

[0043] 6. Electric heating components. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0045] The following combination Figure 1-Figure 4 Embodiments of the present invention are described in detail.

[0046] like Figure 1 and Figure 2As shown, a solar water storage tank 100 suitable for alpine areas according to an embodiment of the present invention comprises a tank body 1, a first plate 21, a second plate 22 and a first heat storage assembly 3, wherein the tank body 1 has an inner cavity 11; the first plate 21 and the second plate 22 are arranged in the inner cavity 11 to separate the inner cavity 11 into a first chamber 15 and a second chamber 16, one of the first plate 21 and the second plate 22 is movable relative to the other to adjust the size of the first chamber 15 and the second chamber 16, and a first hole 24 and a first valve are provided on at least one of the first plate 21 and the second plate 22, wherein the first hole 24 is used to connect the first chamber 15 and the second chamber 16, and the first valve is used to control the opening and closing of the first hole.

[0047] The first heat storage assembly 3 is disposed in the first chamber 15 , and includes a housing 31 and a phase change medium 32 filled in the housing 31 .

[0048] The first plate 21 and the second plate 22 are in the inner cavity 11, dividing the inner cavity 11 into a first chamber 15 and a second chamber 16 of variable volume. When the volume of the first chamber 15 increases, the volume of the corresponding second chamber 16 decreases. When the volume of the second chamber 16 increases, the volume of the corresponding first chamber 15 decreases. The solar water storage tank 100 suitable for high-cold areas according to the embodiment of the present invention can change the volume of the working fluid in the first chamber 15 by changing the space size of the first chamber 15. In the initial stage of solar heat collection and heating, the volume of the working fluid in the first chamber 15 can be reduced to speed up the start-up speed of solar heat collection and heating. When the light intensity is sufficient, the volume of the working fluid in the first chamber 15 can be increased to achieve energy storage and heat storage, thereby increasing the heating time.

[0049] Specifically, in the embodiment of the present invention, during the startup stage of solar thermal collection and heating, such as the stage when the sun has just risen, the volume of the first chamber 15 is reduced, and the volume of the working fluid in the first chamber 15 is reduced, so that relatively less working fluid participates in the thermal collection cycle, so that the temperature of the working fluid in the first chamber 15 is increased to a temperature suitable for heating as soon as possible, such as 40 degrees Celsius, and the heating is started.

[0050] When there is sufficient sunlight, for example, after the sun rises and for several hours around 14:20 local true solar time, the temperature of the working fluid in the first chamber 15 is relatively high. At this time, the volume of the first chamber 15 can be increased to increase the volume of the working fluid in the first chamber 15, so as to store more heat for use when there is insufficient sunlight or no sunlight, thereby extending the heating time.

[0051] The first hole is used to allow the working fluid to flow between the first chamber 15 and the second chamber 16. When it is necessary to increase the volume of the first chamber 15 and reduce the volume of the second chamber 16, the working fluid in the second chamber 16 will flow into the first chamber 15 through the first hole. When the adjustment is completed, the first valve is closed. At this time, the first chamber 15 and the second chamber 16 are relatively independent, and the working fluids in the first chamber 15 and the second chamber 16 are basically isolated, and no convective heat exchange is performed.

[0052] The first heat storage component 3 is used to absorb heat and store energy when the working medium temperature in the first chamber 15 is high, and release heat when the working medium temperature in the first chamber 15 is low. Therefore, the first heat storage component 3 can absorb more heat for energy storage by using the phase change medium 32 when there is sufficient light, and can extend the heating time by releasing heat when there is insufficient light.

[0053] In some embodiments, the box body 1 includes a first shell 12 , a second shell 13 and a first insulation layer 14 . The first shell 12 is sleeved on the outside of the second shell 13 , and the first insulation layer 14 is disposed between the first shell 12 and the second shell 13 .

[0054] When the embodiment of the present invention is applied to high-cold areas, the box body 1 needs to be insulated due to the low ambient temperature. The embodiment of the present invention provides a first insulation layer 14 between the first shell 12 and the second shell 13, which can improve its insulation performance while ensuring its structural strength.

[0055] Furthermore, the cross-sections of the first shell 12 and the second shell 13 are both circular. Arranging the first shell 12 and the second shell 13 in a circular shape is convenient for manufacturing and one-time molding, and can also improve the overall force stability, avoiding the internal working fluid from squeezing the side wall of the box body 1 when the box body 1 is too large, causing stress concentration problems in local positions, and also facilitating the installation and arrangement of other components.

[0056] Of course, the box body 1 also includes a top cover and a base, and both the top cover and the base include an inner plate, an outer plate and a first insulation layer 14. The inner plate is connected to the second shell 13, and the outer plate is connected to the first shell 12 to form a sealed box body 1. The inner cavity 11 of the box body 1 is a cylindrical cavity.

[0057] Furthermore, the first insulation layer is formed by polyurethane foaming, the thickness of the first insulation layer is 15 mm to 45 mm, and the density of the first insulation layer is 41 kg / m 3 Up to 45kg / m 3 , the closed porosity of the first thermal insulation layer is not less than 96%.

[0058] The thickness of the first insulation layer can be 15mm, 18mm, 20mm, 23.5mm, 28mm, 30mm or 45mm. When the thickness of the first insulation layer is too thin, less than 15mm, it cannot meet the insulation performance requirements, resulting in excessive heat loss. When the thickness of the first insulation layer is too thick, greater than 45mm, the insulation layer is too thick, which increases the cost and the volume of the box, and also affects the stability of the entire structure.

[0059] The density of the first insulation layer can be 41kg / m 3 , 42kg / m3 43.6kg / m 3 or 45kg / m 3 By designing the thickness, density and closed-pore ratio of the first insulation layer, the insulation layer can be prevented from shrinking and deforming at minus 45 degrees Celsius, thereby adapting to the environmental requirements of high-cold areas, ensuring the structural stability of the box, and extending the overall service life.

[0060] Furthermore, a tie rod is provided between the first shell 12 and the second shell 13 or on the inner wall of the second shell 13 .

[0061] It should be understood that when the volume of the box body 1 is too large, the force stability of the box body 1 will be greatly tested due to the excessive volume of the working fluid filled inside the box body 1, which can easily lead to different force conditions at different positions, causing the box body 1 to deform. Therefore, in the embodiment of the present invention, tie rods are provided between the first shell 12 and the second shell 13, or tie rods are provided on the inner wall of the second shell 13, so as to increase the structural strength of some sections, ensure that the corresponding areas are not deformed, and improve the service life.

[0062] The first shell 12 and the second shell 13 of the embodiment of the present invention are made of stainless steel. Specifically, the second shell 13 is used as an inner shell and can be made of SUS304-2B food-grade stainless steel, which has pressure-resistant and leak-resistant properties and is welded by inert gas shielded welding.

[0063] In some embodiments, the inner cavity 11 is a cylindrical cavity, the lengths of the first plate 21 and the second plate 22 extend along the axial direction of the inner cavity 11 and abut against the axial end faces of the inner cavity 11, the first plate 21 is fixedly connected to the box body 1, and the second plate 22 is rotatably connected to the box body 1; one end of the first plate 21 in the width direction and one end of the second plate 22 in the width direction are close to the middle of the inner cavity 11 and abut against each other, the other end of the first plate 21 in the width direction and the other end of the second plate 22 in the width direction abut against the radial side wall of the inner cavity 11, and the cross-sections of the first chamber 15 and the second chamber 16 are both fan-shaped.

[0064] Both ends of the first plate 21 and the second plate 22 in the length direction abut against the axial end surface of the inner cavity 11, one end of the first plate 21 and one end of the second plate 22 in the width direction abut against the radial side wall in the circumferential direction of the inner cavity 11, and the other end of the first plate 21 and the other end of the second plate 22 in the width direction are close to the middle of the inner cavity 11 and abut against each other.

[0065] It should be understood that three of the four side edges of the first plate 21 are respectively abutted and fixedly sealed against the top, bottom and side wall surfaces of the box body 1, and the fourth side edge of the first plate 21 is located in the middle of the inner cavity 11; three of the four side edges of the second plate 22 are respectively abutted and sealed against the top, bottom and side wall surfaces of the box body 1, and the fourth side edge of the second plate 22 is located in the middle of the inner cavity 11, and the top and bottom of the fourth side edge of the second plate 22 are rotatably connected to the box body 1, so that the second plate 22 is rotatable relative to the box body 1 and the first plate 21.

[0066] When the second plate 22 rotates clockwise or counterclockwise, the volume of the first chamber 15 may increase or decrease.

[0067] Furthermore, the solar water storage tank 100 suitable for high-cold areas also includes a first drive unit 23, which is connected to the second plate 22 and is used to drive the second plate 22 to rotate relative to the tank body 1. The first drive unit 23 is linked to the first valve.

[0068] The first driving part 23 includes a driving motor and a reducer, the output end of the driving motor is connected to the reducer, and the output end of the reducer is connected to the rotating shaft between the second plate 22 and the box 1. When the driving motor rotates, it can drive the second plate 22 to rotate. When the first driving part 23 is in motion, the first valve is opened synchronously, and when the first driving part 23 stops, the first valve is stopped synchronously.

[0069] The driving motor is a servo motor.

[0070] Further, the first holes are provided at the lower part of the first plate 21 and / or the second plate 22 , and there are a plurality of first holes.

[0071] The provision of multiple first holes can reduce the resistance when the second plate 22 rotates, and ensure that the fluid between the first chamber 15 and the second chamber 16 can flow relatively evenly when the second plate 22 rotates. The number of first holes can be 2, 4, 5 or 7.

[0072] like Figure 2 In some embodiments shown in FIG. 1 , the first plate 21 and the second plate 22 both include a third shell 211 and a second thermal insulation layer 212 , and the second thermal insulation layer 212 is filled in the third shell 211 .

[0073] In the embodiment of the present invention, by providing the second insulation layer 212 in the first plate 21 and the second plate 22 , the working fluids in the first chamber 15 and the second chamber 16 can be relatively independent, thereby reducing the heat exchange between the working fluids.

[0074] The second thermal insulation layer 212 may be made of the same material and have the same properties as the first thermal insulation layer 14 .

[0075] Furthermore, the volume of the first chamber 15 is greater than the volume of the second chamber 16. The working medium in the first chamber 15 is used as a circulating fluid for heat collection and heat supply, so at least half of the space in the box body 1 needs to be used as the first chamber 15, that is, within the movement range of the second plate 22, the minimum volume of the first chamber 15 needs to be greater than the maximum volume of the second chamber 16.

[0076] In some embodiments, the housing 31 has a first surface 311 close to the second chamber 16 and a second surface 312 away from the second chamber 16, a first area 151 is formed between the first surface 311 and the first plate 21 and the second plate 22, and a second area 152 is formed between the second surface 312 and the wall of the inner cavity 11. The space in the first chamber 15 is further divided by the housing 31 of the first heat storage assembly 3, so that the positions of different fluids entering and exiting the first chamber 15 can be more reasonably planned, and energy utilization can be more efficiently realized, thereby improving heat utilization.

[0077] like Figure 1 , Figure 2 and Figure 4 As shown further, the box body 1 also includes a first inlet 41, a first outlet 42, a second inlet 43 and a second outlet 44. The first inlet 41 and the first outlet 42 are used to connect to the solar thermal collection equipment, and the second inlet 43 and the second outlet 44 are used to connect to the heating equipment. The first inlet 41 and the second outlet 44 are connected to the first area 151, the first outlet 42 is connected to the second area 152, and the second inlet 43 is connected to the lower part of the first chamber 15.

[0078] Figure 4 Reason Figure 2 The structural schematic diagram of the expanded positions of A and B in the figure shows the positions of different inlets and outlets on the outer wall of the box body 1. The solar thermal collection equipment is used to heat the working fluid in the first chamber 15, and the heating equipment is used to extract heat from the working fluid in the first chamber 15. Therefore, by setting the positions of different inlets and outlets, the fluid in the first chamber 15 presents stratified and directional flow, which can more efficiently utilize the internal heat.

[0079] Due to the different temperatures, the density of the working fluid will also change, resulting in the colder working fluid having a higher density and sinking to the bottom of the box 1, while the hotter working fluid having a lower density and floating on the top of the box 1, thereby forming a temperature stratification. Therefore, in the embodiment of the present invention, the second inlet 43 is arranged at the lower part of the first chamber 15, and the first inlet 41, the first outlet 42 and the second outlet 44 are arranged at the upper part of the first chamber 15 to achieve temperature stratification. Furthermore, in the embodiment of the present invention, the first inlet 41 and the second outlet 44 are arranged at the first area 151, and the first outlet 42 is arranged at the second area 152, which can promote the directional flow of the fluid in the upper part of the first chamber 15, and improve the utilization rate of high-quality heat and the heat collection efficiency.

[0080] In some embodiments, the thermal conductivity of the first surface 311 is greater than the thermal conductivity of the second surface 312 .

[0081] The embodiment of the present invention designs the thermal conductivity of the first surface 311 and the second surface 312 of the shell 31 so that the thermal conductivity of the first surface 311 is larger, which enables more effective heat exchange between the phase-changing medium and the working medium in the first area 151 and improves the utilization rate of heat.

[0082] In some embodiments, the first heat storage component 3 is located at the upper part of the first chamber 15, and the distance between the lower end of the first heat storage component 3 and the bottom surface of the first chamber 15 is 400 mm to 1200 mm, which can avoid the unreasonable problem of energy storage and energy release of the first heat storage component 3 due to temperature stratification in the first chamber 15. When releasing energy, it can better realize the heating of the working fluid in the first area 151 and improve the utilization rate of heat.

[0083] The spacing distance between the lower end of the first heat storage component 3 and the bottom surface of the first chamber 15 can be 400 mm, 550 mm, 670 mm, 1000 mm or 1200 mm. When the spacing distance is too small and less than 400 mm, the first heat storage component 3 has a greater contact with the low-temperature working medium at the bottom of the first chamber 15. When the spacing distance is too large and greater than 1200 mm, the volume and heat storage capacity of the first heat storage component 3 are affected.

[0084] In some embodiments, the housing 1 further includes a third inlet 45, which is used to add water to the inner cavity 11, and the third inlet 45 is connected to the upper part of the second chamber 16. When the working medium in the inner cavity 11 is insufficient, water can be added to the inner cavity 11 through the third inlet 45, and water can be added to the second chamber 16, thereby reducing the temperature impact on the working medium in the first chamber 15. At this time, the first valve can be opened, and the principle of the communicating vessel is used to make the working medium liquid levels in the first chamber 15 and the second chamber 16 rise simultaneously.

[0085] In some embodiments, the first surface 311 is an inwardly concave arc surface, and the second surface 312 is an outwardly convex arc surface. In the embodiment of the present invention, by designing the first surface 311 and the second surface 312 as arc surfaces, the first surface 311 is an inwardly concave arc surface, and the second surface 312 is an outwardly convex arc surface, the internal space of the second chamber 16 can be more effectively utilized, and the volumes of the first area 151 and the second area 152 can be reasonably planned, and at the same time, it can play a guiding role, so that the working medium in the first chamber 15 flows more smoothly.

[0086] like Figure 3 As shown, in some embodiments, the first heat storage assembly 3 is arranged obliquely relative to the axial direction of the inner cavity 11, and the distance between the lower end of the first heat storage assembly 3 and the second chamber 16 is smaller than the distance between the upper end of the first heat storage assembly 3 and the second chamber 16.

[0087] That is to say, the angle between the length extension direction of the first heat storage component and the axial direction of the inner cavity 11 is the angle X shown in the figure. After the first heat storage component 3 is tilted, the spatial volume of the first area 151 can be gradually increased from the bottom to the top. The smaller bottom space can prevent the lower temperature fluid at the bottom from flowing to the first area 151. Correspondingly, the spatial volume of the second area 152 gradually decreases from the bottom to the top. The larger bottom space can prevent the lower temperature fluid from flowing to the second area 152, and it is also convenient for the fluid in the second area 152 to flow to the collector to collect heat. The embodiment of the present invention realizes the three-dimensional flow of fluid and improves the utilization rate of heat.

[0088] In some embodiments, the solar water storage tank 100 suitable for high-cold areas also includes a heat exchange coil 5, which is located in the first chamber 15, and the water inlet 51 of the heat exchange coil 5 and the water outlet 52 of the heat exchange coil 5 extend to the outside of the box body 1, and the water inlet 51 of the heat exchange coil 5 is used to connect to a water source, and the water outlet 52 of the heat exchange coil 5 is used to connect to domestic water equipment.

[0089] Hot water can not only be used for floor heating and air heating, but also for domestic water, such as washing water. The water from the water source is heated after passing through the heat exchange coil 5, and it can be ensured to reach a relatively suitable temperature when flowing out of the faucet. For example, the water temperature in the faucet is between 20 degrees Celsius and 50 degrees Celsius, which can be adjusted and adapted to different needs.

[0090] In some embodiments, the solar water storage tank 100 suitable for high-cold areas further includes an electric heating component 6, which is disposed at the lower part of the inner cavity 11, and there are multiple electric heating components 6.

[0091] In the embodiment of the present invention, an electric heating component 6 is arranged in the inner cavity 11, so that the electric heating component 6 can be used to heat the internal working fluid. On the one hand, the startup speed is improved during the startup stage of heat collection and heat supply. On the other hand, electric heating can be used to provide heating when solar energy is insufficient, thereby improving practicality.

[0092] The electric heating component 6 may be an electric heating tube arranged in the inner cavity 11 , and the number of the electric heating components 6 may be 2, 3, 5 or 6.

[0093] The solar thermal collection system of the embodiment of the present invention comprises a heat collection device and the solar water storage tank 100 suitable for high-cold areas as described above, and the heat collection device is connected to the solar water storage tank 100 suitable for high-cold areas.

[0094] At least some of the beneficial effects achieved by the solar thermal collection system of the embodiment of the present invention are the same as the beneficial effects achieved by the solar water storage tank 100 suitable for high-cold areas in the above-mentioned embodiment, so they are not described in detail.

[0095] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0099] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0100] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A solar water storage tank suitable for high-cold areas, characterized in that: include: A box body, wherein the box body has an inner cavity; a first plate and a second plate, the first plate and the second plate being arranged in the inner cavity to separate the inner cavity into a first chamber and a second chamber, one of the first plate and the second plate being movable relative to the other to adjust the size of the first chamber and the second chamber, at least one of the first plate and the second plate being provided with a first hole and a first valve, the first hole being used to connect the first chamber and the second chamber, and the first valve being used to control the opening and closing of the first hole; The first heat storage component is arranged in the first chamber, and the first heat storage component has an outer shell and a phase change medium filled in the outer shell.

2. The solar water storage tank suitable for high-cold areas according to claim 1 is characterized in that: The box body comprises a first shell, a second shell and a first heat-insulating layer, the first shell is sleeved on the outside of the second shell, and the first heat-insulating layer is arranged between the first shell and the second shell.

3. The solar water storage tank suitable for high-cold areas according to claim 2 is characterized in that: The cross-sections of the first shell and the second shell are both circular; And / or, the first insulation layer is formed by polyurethane foaming, the thickness of the first insulation layer is 15 mm to 45 mm, and the density of the first insulation layer is 41 kg / m 3 Up to 45kg / m 3 , the closed porosity of the first thermal insulation layer is not less than 96%; And / or, a tie rod is provided between the first shell and the second shell, or on the inner wall of the second shell.

4. The solar water storage tank suitable for high-cold areas according to claim 1, characterized in that: The inner cavity is a cylindrical cavity, the lengths of the first plate and the second plate both extend along the axial direction of the inner cavity and abut against the axial end faces of the inner cavity, the first plate is fixedly connected to the box body, and the second plate is rotatably connected to the box body; one end of the first plate in the width direction and one end of the second plate in the width direction are close to the middle of the inner cavity and abut against each other, the other end of the first plate in the width direction and the other end of the second plate in the width direction abut against the radial side wall of the inner cavity, and the cross-sections of the first chamber and the second chamber are both fan-shaped.

5. The solar water storage tank suitable for high-cold areas according to claim 4 is characterized in that: It also includes a first driving part, the first driving part is connected to the second plate and is used to drive the second plate to rotate relative to the box body, and the first driving part is linked to the first valve; And / or, the first hole is provided at a lower portion of the first plate and / or the second plate, and the number of the first holes is plural; And / or, the first plate and the second plate both include a third shell and a second thermal insulation layer, and the second thermal insulation layer is filled in the third shell; And / or, the volume of the first chamber is greater than the volume of the second chamber.

6. The solar water storage tank suitable for high-cold areas according to claim 1, characterized in that: The housing has a first surface close to the second chamber and a second surface far from the second chamber, a first area is formed between the first surface and the first plate and the second plate, and a second area is formed between the second surface and the wall of the inner cavity.

7. The solar water storage tank suitable for high-cold areas according to claim 6, characterized in that: The thermal conductivity of the first surface is greater than the thermal conductivity of the second surface; And / or, the first heat storage assembly is located at the upper part of the first chamber, and the distance between the lower end of the first heat storage assembly and the bottom surface of the first chamber is 400 mm to 1200 mm; And / or, further comprising a first inlet, a first outlet, a second inlet and a second outlet, wherein the first inlet and the first outlet are used to be connected to a solar thermal collector, the second inlet and the second outlet are used to be connected to a heating device, the first inlet and the second outlet are arranged in communication with the first region, the first outlet is arranged in communication with the second region, and the second inlet is arranged in communication with the lower portion of the first chamber; And / or, further comprising a third inlet, the third inlet being used to replenish water into the inner cavity, the third inlet being in communication with an upper portion of the second chamber; And / or, the first surface is an inner concave arc surface, and the second surface is an outer convex arc surface.

8. The solar water storage tank suitable for high-cold areas according to claim 6, characterized in that: The first heat storage component is arranged obliquely relative to the axial direction of the inner cavity, and the distance between the lower end of the first heat storage component and the second chamber is smaller than the distance between the upper end of the first heat storage component and the second chamber.

9. The solar water storage tank suitable for high-cold areas according to claim 1, characterized in that: It also includes a heat exchange coil, the heat exchange coil is located in the first room, the water inlet and the water outlet of the heat exchange coil extend to the outside of the box, the water inlet of the heat exchange coil is used to connect to a water source, and the water outlet of the heat exchange coil is used to connect to domestic water equipment; And / or, it also includes an electric heating component, which is arranged at the lower part of the inner cavity, and the number of the electric heating components is multiple.

10. A solar thermal collection system, characterized in that: It comprises a heat collecting device and a solar water storage tank suitable for high-cold areas as claimed in any one of claims 1 to 9, wherein the heat collecting device is connected to the solar water storage tank suitable for high-cold areas.

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