Ice storage air conditioning ice storage device

Abstract

The utility model relates to the technical field of air conditioning ice storage, and specifically discloses ice storage air conditioning ice storage equipment, which comprises an ice storage box, a flow guide mechanism is arranged between the inside and outside of the ice storage box, the flow guide mechanism comprises a liquid outlet tank located above the ice storage box and a liquid inlet tank located below the ice storage box, a plurality of vertical pipes that are uniformly distributed and extend into the ice storage box are in communication with opposite sides of the liquid outlet tank and the liquid inlet tank, two vertical pipes that are opposite to each other form a group, and a heat conduction pipe is in communication between each group of vertical pipes; the uniform distribution of the heat conduction pipe breaks the limitation of the traditional coil outside preferential heat exchange, ensures synchronous cooling of the water body, realizes uniform cooling of the water body in the ice storage box, significantly improves the heat conduction efficiency, shortens the ice formation time and reduces the energy consumption, the three-dimensional uniform distribution of the heat conduction pipe ensures that the contact surface of the cold carrier and the ice layer is uniformly expanded in the whole ice storage box, avoids the phenomenon of "outer layer melting, middle part remaining ice" in the traditional technology, and thus improves the cooling stability.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning ice storage technology, and specifically discloses an ice storage air conditioning ice storage device. Background Technology

[0002] Ice storage air conditioning technology is a system technology that utilizes the peak-valley electricity price difference to achieve energy savings. During the nighttime hours when electricity prices are lower, the refrigeration unit starts operating, cooling the refrigerant (such as ethylene glycol solution) to below its freezing point. The low-temperature refrigerant exchanges heat with water in the ice storage tank through coils or plate heat exchangers, causing the water to freeze and store the cooling capacity. When the air conditioning load peaks during the day, the ice-melting process begins. The warm refrigerant (such as air conditioning return water) flows through the ice storage equipment, absorbs the cooling capacity of the ice layer, and then its temperature decreases before it is circulated back into the air conditioning system to provide indoor cooling. This "storing cooling at night and using it during the day" operating mode can balance the grid load and significantly reduce users' electricity costs.

[0003] Currently, mainstream ice storage equipment faces significant technical bottlenecks in practical applications:

[0004] The problem of accumulated thermal resistance during the freezing stage: Existing equipment often places the coils on the outer wall of the ice storage tank. During refrigerant circulation, heat exchange occurs preferentially with the water on the outer side of the tank, while the water in the middle, being farther from the coils, experiences a significant delay in cooling. As the outer ice layer gradually forms, the thermal resistance of the ice layer itself, combined with the remaining water layer, creates a "double thermal resistance," leading to a sharp decrease in heat transfer efficiency, a prolonged overall freezing time, and a significant increase in energy consumption.

[0005] Uneven release of cold energy during the ice melting stage: During the daytime ice melting, the warm refrigerant also comes into contact with the outer ice layer first. The outer ice melts preferentially to form water flow channels, while the inner ice layer cannot fully contact the refrigerant, often resulting in the phenomenon of "the outer layer melting completely and the middle layer remaining ice", which makes it impossible to guarantee the stability of cooling supply.

[0006] Therefore, an ice storage air conditioning system is needed to solve the above problems. Utility Model Content

[0007] This invention proposes an ice storage air conditioning ice storage device, which achieves uniform cooling of the water inside the ice storage refrigerator, significantly improves heat transfer efficiency, shortens freezing time and reduces energy consumption; during the daytime ice melting stage, it can ensure that the refrigerant and ice layer are in full contact, effectively avoiding the phenomenon of "outer layer melted and middle part left with ice", thereby improving the stability of cooling supply.

[0008] This utility model is implemented as follows: an ice storage air conditioning ice storage device includes a storage refrigerator, and a flow guiding mechanism is provided between the interior and exterior of the storage refrigerator;

[0009] The flow guiding mechanism includes an outlet tank located above the refrigerator and an inlet tank located below the refrigerator. Multiple evenly distributed vertical pipes extending into the refrigerator are connected to opposite sides of the outlet and inlet tanks. Two vertical pipes facing each other form a group, and each group of vertical pipes is connected to a heat-conducting pipe. These heat-conducting pipes are evenly distributed inside the refrigerator. A first connecting pipe is connected to the lower end of the inlet tank, and a second connecting pipe is connected to the upper end of the outlet tank. A first infusion pipe and a second infusion pipe are connected to the outer wall of the first connecting pipe, and a first drain pipe and a second drain pipe are connected to the outer wall of the second connecting pipe. Each of the first infusion pipe, the second infusion pipe, the first drain pipe, and the second drain pipe is equipped with a manual valve.

[0010] The outer wall of the refrigerator is provided with a vacuum insulation layer.

[0011] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, the ice storage refrigerator is made of stainless steel and the vacuum insulation layer is made of VIP board.

[0012] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, the outer wall of the ice storage refrigerator is connected to an L-shaped pipe, the upper end of the L-shaped pipe is connected to a water filling shell, the outer wall of the water filling shell is threadedly connected to a threaded cover, and the top of the inner wall of the threaded cover is fitted with a sealing ring that abuts against the upper end of the water filling shell.

[0013] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, the lower end of the first connecting pipe is connected to a discharge pipe with a hand valve.

[0014] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, the outer wall of the vacuum insulation layer is provided with a protective moisture-proof layer.

[0015] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, the outer wall of the ice storage refrigerator is connected to a discharge pipe with a manual valve.

[0016] As a preferred embodiment of the ice storage air conditioning ice storage device of this utility model, both the front and rear ends of the liquid outlet tank and the liquid inlet tank are fixedly connected with L-shaped reinforcing plates, and multiple L-shaped reinforcing plates are fixedly connected to the outer wall of the ice storage refrigerator.

[0017] The beneficial effects of this utility model are:

[0018] 1. During the nighttime cold storage phase, the low-temperature refrigerant flows through the inlet tank and vertical pipes into multiple heat-conducting pipes that are evenly distributed in a matrix inside the refrigerator. The excellent thermal conductivity of the heat-conducting pipes allows the refrigerant to fully absorb the heat from the water inside the refrigerator. Its even distribution breaks the limitation of preferential heat exchange on the outside of the traditional coil, ensuring synchronous cooling of the water and achieving uniform cooling of the water inside the refrigerator. This significantly improves heat transfer efficiency, shortens freezing time, and reduces energy consumption.

[0019] 2. During the daytime cooling phase, the warm refrigerant also enters the heat pipe. The refrigerant releases heat inside the heat pipe, melting the ice layer outside the pipe. After cooling, it is discharged to provide cooling. The three-dimensional uniform distribution of the heat pipe ensures that the contact surface between the refrigerant and the ice layer is evenly spread throughout the entire refrigerator, avoiding the phenomenon of "the outer layer melts completely while the middle layer remains" in traditional technology, thereby improving the stability of cooling supply. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a front sectional view of the ice storage device for an ice storage air conditioner according to the present invention.

[0022] Figure 2 This is a partial left-side cross-sectional view of the present invention;

[0023] Figure 3 This is a structural diagram of the liquid inlet tank of this utility model;

[0024] Figure 4 This is a structural diagram of the water-filling shell and L-shaped tube of this utility model.

[0025] The markings in the diagram are: 1. Storage tank; 2. Outlet tank; 3. Inlet tank; 4. Vertical pipe; 5. Heat-conducting pipe; 6. Vacuum insulation layer; 7. Protective moisture-proof layer; 8. First connecting pipe; 9. First drain pipe; 10. L-shaped reinforcing plate; 11. First infusion pipe; 12. Water filling shell; 13. Second drain pipe; 14. Threaded cap; 15. Second infusion pipe; 16. Second connecting pipe; 17. Discharge pipe; 18. Outlet pipe; 19. L-shaped pipe. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0027] Please see Figure 1-4 An ice storage air conditioning ice storage device includes a storage refrigerator 1, and a flow guiding mechanism is provided between the interior and exterior of the storage refrigerator 1;

[0028] The flow guiding mechanism includes an outlet tank 2 located above the refrigerator 1 and an inlet tank 3 located below the refrigerator 1. The outlet tank 2 and the inlet tank 3 are connected to a plurality of evenly distributed vertical pipes 4 extending into the interior of the refrigerator 1 on opposite sides. Two vertical pipes 4 that are opposite each other form a group. Each group of vertical pipes 4 is connected to a heat-conducting pipe 5. The plurality of heat-conducting pipes 5 are evenly distributed inside the refrigerator 1. The lower end of the inlet tank 3 is connected to a first connecting pipe 8, and the upper end of the outlet tank 2 is connected to a second connecting pipe 16. The outer wall of the first connecting pipe 8 is connected to a first infusion pipe 11 and a second infusion pipe 15. The outer wall of the second connecting pipe 16 is connected to a first drain pipe 9 and a second drain pipe 13. The first infusion pipe 11, the second infusion pipe 15, the first drain pipe 9 and the second drain pipe 13 are all equipped with a hand valve.

[0029] The outer wall of the refrigerator 1 is provided with a vacuum insulation layer 6.

[0030] In this embodiment: During the nighttime freezing and cold storage phase, the hand valves of the first infusion pipe 11 and the first drain pipe 9 need to be opened, while the hand valves of the second infusion pipe 15 and the second drain pipe 13 are closed. The low-temperature refrigerant flows from the first infusion pipe 11 into the first connecting pipe 8, and then through the inlet tank 3 and multiple vertical pipes 4 on the lower side into the multiple heat-conducting pipes 5 inside the refrigerator 1. The multiple heat-conducting pipes 5 are distributed in a matrix inside the refrigerator 1 to ensure that the refrigerant is in full contact with the water inside the refrigerator 1. All the multiple heat-conducting pipes 5 have good conductivity. The refrigerant exchanges heat with the surrounding water in the heat pipe 5, absorbing heat and increasing in temperature. It then flows into the outlet tank 2 through multiple vertical pipes 4 above, and is discharged through the second connecting pipe 16 and the first drain pipe 9. The uniform distribution of the heat pipe 5 breaks the limitation of the traditional outer side of the coil preferential heat exchange, so that the water in the refrigerator 1 cools down synchronously, avoiding the problem of the water in the middle freezing late due to its distance from the heat exchange surface. This achieves uniform cooling of the water inside the refrigerator 1, significantly improves heat transfer efficiency, shortens freezing time and reduces energy consumption.

[0031] The vacuum insulation layer 6 on the outer wall of the refrigerator 1 can effectively prevent cold energy leakage and reduce the cold energy loss rate during nighttime cold storage.

[0032] During the daytime ice melting and cooling phase, the hand valves of the first infusion pipe 11 and the first drain pipe 9 are closed, and the hand valves of the second infusion pipe 15 and the second drain pipe 13 are opened. The warm refrigerant, which is the same temperature as the air conditioning return water, is introduced into the second infusion pipe 15 and then flows into the first connecting pipe 8. It then enters the multiple heat-conducting pipes 5 through the inlet tank 3 and multiple vertical pipes 4 located on the lower side. The warm refrigerant exchanges heat with the surrounding ice layer in the heat-conducting pipes 5, releasing heat to melt the ice layer. After the temperature drops, it flows into the outlet tank 2 through the upper vertical pipe 4 and is discharged through the second connecting pipe 16 and the second drain pipe 13, and is delivered to the air conditioning terminal for cooling. During the ice melting process, the three-dimensional distribution of the heat-conducting pipes 5 ensures that the refrigerant is in uniform contact with the ice layer, avoiding the phenomenon of "the outer layer melts completely and the middle part remains ice" in traditional technology, thereby improving the stability of cooling supply.

[0033] It should be noted that during nighttime icing and daytime melting, the refrigerant is powered by a matching circulation pump. At night, after the refrigerant is cooled by the refrigeration unit, it is pressurized by the circulation pump and enters the first liquid delivery pipe 11 to participate in the cold storage cycle. After being heated, it returns to the refrigeration unit. During the day, the air conditioning return water is driven by the circulation pump to enter the second liquid delivery pipe 15 to participate in the cold release cycle. After being cooled, it is delivered to the air conditioning terminal. The above-mentioned circulation pump is a standard configuration in the field of ice storage. This solution switches the circulation path by a manual valve without modifying its structure. It only uses the pressure delivery principle to ensure the refrigerant flows in a directional manner within the flow guiding mechanism.

[0034] As a technical optimization of this utility model, the refrigerator 1 is made of stainless steel, and the vacuum insulation layer 6 is made of VIP board.

[0035] In this embodiment: the refrigerator 1 is welded from 304 stainless steel plate, which has low temperature resistance and corrosion resistance to resist long-term erosion by the refrigerant; the vacuum insulation layer 6 is made of VIP board, which blocks heat conduction by vacuuming and glass fiber core material, and has a lower cold loss rate than the traditional polyurethane insulation layer.

[0036] As a technical optimization of this utility model, the outer wall of the refrigerator 1 is connected to an L-shaped tube 19, the upper end of the L-shaped tube 19 is connected to a water filling shell 12, the outer wall of the water filling shell 12 is threadedly connected to a threaded cover 14, and a sealing ring that abuts against the upper end of the water filling shell 12 is installed on the top of the inner wall of the threaded cover 14.

[0037] In this embodiment: the L-shaped tube 19 on the outer wall of the refrigerator 1 is connected to the water filling shell 12. The water filling port can be opened by rotating the threaded cover 14 to add water to the refrigerator 1. The sealing ring on the inner wall of the threaded cover 14 abuts against the top surface of the water filling shell 12 to form a sealing structure, ensuring the airtightness of the refrigerator 1.

[0038] As a technical optimization of this utility model, the lower end of the first connecting pipe 8 is connected to a discharge pipe 17 with a hand valve.

[0039] In this embodiment: opening the hand valve of the discharge pipe 17 can empty the residual refrigerant in the liquid inlet tank 3 and the heat conduction pipe 5.

[0040] As a technical optimization of this utility model, a protective moisture-proof layer 7 is provided on the outer wall of the vacuum insulation layer 6.

[0041] In this embodiment, the protective moisture-proof layer 7 on the outer wall of the vacuum insulation layer 6 is composed of fiberglass cotton and aluminum alloy plate. The fiberglass cotton blocks external heat, and the ceramic coating on the surface of the aluminum alloy plate reflects infrared radiation. The protective moisture-proof layer 7 has a waterproof membrane, which improves the service life of the vacuum insulation layer 6 and avoids the decrease in thermal insulation performance due to moisture.

[0042] As a technical optimization of this utility model, the outer wall of the refrigerator 1 is connected to a discharge pipe 18 with a manual valve.

[0043] In this embodiment: opening the hand valve of the discharge pipe 18 can drain the water inside the refrigerator 1.

[0044] As a technical optimization of this utility model, both the front and rear ends of the liquid outlet tank 2 and the liquid inlet tank 3 are fixedly connected with L-shaped reinforcing plates 10, and multiple L-shaped reinforcing plates 10 are fixedly connected to the outer wall of the refrigerator 1.

[0045] In this embodiment, the connection between the liquid outlet tank 2 and the liquid inlet tank 3 is strengthened by setting up the L-reinforcing plate 10.

[0046] The working principle and usage process of this utility model: During the nighttime freezing and cold storage stage, the hand valves of the first infusion pipe 11 and the first drain pipe 9 need to be opened, and the hand valves of the second infusion pipe 15 and the second drain pipe 13 need to be closed. The low-temperature refrigerant flows from the first infusion pipe 11 into the first connecting pipe 8, and then enters the interior of the multiple heat-conducting pipes 5 inside the refrigerator 1 through the inlet tank 3 and the multiple vertical pipes 4 on the lower side. The multiple heat-conducting pipes 5 are distributed in a matrix inside the refrigerator 1 to ensure that the refrigerant is in full contact with the water inside the refrigerator 1. Each of the multiple heat-conducting pipes 5 has... With good thermal conductivity, the refrigerant exchanges heat with the surrounding water in the heat pipe 5. After absorbing heat, the temperature rises and flows into the liquid outlet tank 2 through multiple vertical pipes 4 above. It is then discharged through the second connecting pipe 16 and the first drain pipe 9. The uniform distribution of the heat pipe 5 breaks the limitation of the traditional outer side of the coil preferential heat exchange, so that the water in the refrigerator 1 cools down synchronously. It avoids the problem of the water in the middle freezing late due to the distance from the heat exchange surface, and achieves uniform cooling of the water inside the refrigerator 1. It significantly improves the heat transfer efficiency, shortens the freezing time and reduces energy consumption.

[0047] The vacuum insulation layer 6 on the outer wall of the refrigerator 1 is made of VIP board with a thermal conductivity of <0.004 W / (m・K), which effectively blocks the leakage of cold energy and reduces the cold energy loss rate during the nighttime cold storage process;

[0048] During the daytime ice melting and cooling phase, the hand valves of the first infusion pipe 11 and the first drain pipe 9 are closed, and the hand valves of the second infusion pipe 15 and the second drain pipe 13 are opened. The warm refrigerant, which is the same temperature as the air conditioning return water, is introduced into the second infusion pipe 15 and then flows into the first connecting pipe 8. It then enters the multiple heat-conducting pipes 5 through the inlet tank 3 and multiple vertical pipes 4 located on the lower side. The warm refrigerant exchanges heat with the surrounding ice layer in the heat-conducting pipes 5, releasing heat to melt the ice layer. After the temperature drops, it flows into the outlet tank 2 through the upper vertical pipe 4 and is discharged through the second connecting pipe 16 and the second drain pipe 13, and is delivered to the air conditioning terminal for cooling. During the ice melting process, the three-dimensional distribution of the heat-conducting pipes 5 ensures that the refrigerant is in uniform contact with the ice layer, avoiding the phenomenon of "the outer layer melts completely and the middle part remains ice" in traditional technology, thereby improving the stability of cooling supply.

[0049] The L-shaped pipe 19 on the outer wall of the refrigerator 1 is connected to the water filling shell 12. The threaded cover 14 is sealed with a sealing ring. After the threaded cover 14 is removed, it is easy to add water. The drain pipe 18 on the outer wall of the refrigerator 1 drains the water inside the refrigerator 1, thereby replacing the water inside the refrigerator 1.

[0050] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An ice storage air conditioning ice storage device, comprising a storage refrigerator (1), characterized in that: A flow guiding mechanism is provided between the interior and exterior of the refrigerator (1); The flow guiding mechanism includes an outlet tank (2) located above the refrigerator (1) and an inlet tank (3) located below the refrigerator (1). The outlet tank (2) and the inlet tank (3) are connected to a plurality of evenly distributed vertical pipes (4) extending into the refrigerator (1) on opposite sides. Two vertical pipes (4) that are opposite each other are a group. Each group of vertical pipes (4) is connected to a heat-conducting pipe (5). The plurality of heat-conducting pipes (5) are evenly distributed inside the refrigerator (1). The lower end of the inlet tank (3) is connected to a first connecting pipe (8). The upper end of the outlet tank (2) is connected to a second connecting pipe (16). The outer wall of the first connecting pipe (8) is connected to a first infusion pipe (11) and a second infusion pipe (15). The outer wall of the second connecting pipe (16) is connected to a first drain pipe (9) and a second drain pipe (13). The first infusion pipe (11), the second infusion pipe (15), the first drain pipe (9) and the second drain pipe (13) are all equipped with a hand valve. The outer wall of the refrigerator (1) is provided with a vacuum insulation layer (6).

2. The ice storage air conditioning ice storage device according to claim 1, characterized in that: The refrigerator (1) is made of stainless steel, and the vacuum insulation layer (6) is made of VIP board.

3. The ice storage air conditioning ice storage device according to claim 1, characterized in that: The outer wall of the refrigerator (1) is connected to an L-shaped pipe (19), the upper end of the L-shaped pipe (19) is connected to a water filling shell (12), the outer wall of the water filling shell (12) is threadedly connected to a threaded cover (14), and a sealing ring that abuts against the upper end of the water filling shell (12) is installed on the top of the inner wall of the threaded cover (14).

4. The ice storage air conditioning ice storage device according to claim 1, characterized in that: The lower end of the first connecting pipe (8) is connected to a discharge pipe (17) with a hand valve.

5. The ice storage air conditioning ice storage device according to claim 1, characterized in that: The outer wall of the vacuum insulation layer (6) is provided with a protective moisture-proof layer (7).

6. The ice storage air conditioning ice storage device according to claim 1, characterized in that: The outer wall of the refrigerator (1) is connected to a discharge pipe (18) with a hand valve.

7. The ice storage air conditioning ice storage device according to claim 1, characterized in that: Both ends of the liquid outlet tank (2) and the liquid inlet tank (3) are fixedly connected to L-shaped reinforcing plates (10), and multiple L-shaped reinforcing plates (10) are fixedly connected to the outer wall of the refrigerator (1).

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