Energy-saving ice storage system

Abstract

The utility model relates to the technical field of air conditioning equipment, in particular to an energy-saving ice storage system which comprises a cold storage box, a front opening door is installed on the front side of the cold storage box, a pipeline is arranged in the cold storage box and comprises an ice melting coil pipe and an ice storage coil pipe, and phase change materials are filled in the cold storage box. A supporting structure used for installing and arranging the ice melting coil pipe and the ice storage coil pipe is further arranged in the cold storage box. The supporting structure comprises connector bases connected to the two ends of the pipeline. In the low-ebb electricity price period at night, the refrigerating unit is operated as required, a refrigerant of the refrigerating unit enters the cold storage box through the cold storage liquid inlet, heat absorption of the outside of the coil pipe is achieved through condensation of the refrigerant in the ice storage coil pipe in the cold storage box, the phase-change material filled in the energy storage equipment loses heat, and the energy storage efficiency is improved. And when the phase change material loses heat, the temperature is reduced, and when the temperature is reduced to reach a phase change temperature point of the phase change material, the phase change material is subjected to form phase change due to continuous loss of heat and is changed into solid from liquid, so that phase change energy storage is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning equipment, in particular to an energy-saving ice storage system. Background Art

[0002] With the development of the national economy, electricity supply is becoming increasingly tight, and the difference between peak and valley power consumption is becoming increasingly pronounced. To stabilize the power grid, the government has introduced a peak-valley electricity pricing policy, encouraging users to consume electricity during off-peak hours. Air conditioners and other refrigeration equipment are major electricity consumers in daily life and work. Addressing the issue of off-peak electricity consumption for refrigeration equipment is crucial to the successful implementation of the national peak-valley electricity pricing policy.

[0003] In this regard, invention application number 202210033281.5 discloses an energy storage device and system that integrates the functions of an evaporator / condenser and a heat exchanger. The energy storage device includes a cold storage tank, a heat exchange coil, and an evaporator coil or condenser coil. The heat exchange coil and the evaporator coil or condenser coil are respectively installed inside the cold storage tank, which is filled with phase change material. The energy storage device can be connected to a cooling / heating unit and terminal cooling / heating equipment. Energy storage can be used during the evening off-peak electricity price period to achieve peak-to-valley shifting and reduce operating costs.

[0004] In the existing solution, when the cold storage system is storing cold, the heat exchange coil and the condensing coil are respectively installed inside the cold storage box. Since the interior of the cold storage box is filled with phase change material, the heat exchange coil and the condensing coil will be squeezed, and the internal space will be filled with phase change material. When the heat exchange coil and the condensing coil are broken or need maintenance and replacement, they cannot be removed in time, which increases the difficulty of maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving ice storage system to address the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] An energy-saving ice storage system includes a cold storage box, a maintenance port is formed on the front side of the cold storage box, the maintenance port is equipped with a front-opening door, a pipe is arranged in the cold storage box, the pipe includes an ice melting coil and an ice storage coil, the cold storage box is filled with phase change material, and a support structure for installing and arranging the ice melting coil and the ice storage coil is also provided in the cold storage box, the support structure includes a joint seat connected to both ends of the pipe, the joint seat is formed with a pair of pipe openings, the pipe opening is formed with a raised first connecting port, the first connecting port is movably equipped with a connecting sleeve, and both ends of the pipe are formed with second connecting ports that are sealed to the connecting sleeve.

[0008] Furthermore: a partition bar for arranging phase change material is provided in the cold storage box, the partition bar is arranged in the cold storage box, two adjacent partition bars are arranged in parallel and spaced apart, and the partition bars and the pipeline are arranged alternately.

[0009] Furthermore: the lengths of the two adjacent dividing strips are the same, and the two adjacent dividing strips are arranged alternately, wherein the end of the first dividing strip rests against the top wall of the cold storage box, and there is a passing gap between the bottom end of the first dividing strip and the bottom wall of the cold storage box, and the bottom of the second adjacent dividing strip rests against the bottom wall of the cold storage box, and there is a passing gap between the top end of the second dividing strip and the bottom wall of the cold storage box.

[0010] Furthermore: the partition strip is formed with a plurality of installation grooves arranged at intervals along the length direction, and exposed openings are formed at both ends of the installation grooves, and the phase change material is filled into the installation grooves of the partition strip.

[0011] Furthermore: the joint seat is installed in the through gap, and a heat-insulating layer is provided on the wall or inside of the cold storage box.

[0012] Furthermore: a first flow channel and a second flow channel are formed inside the joint seat, the first connection ports are formed at both ends of the first flow channel and the second flow channel respectively, and a stop block is formed at the end of the first connection port to prevent the connecting sleeve from falling off.

[0013] Furthermore: the outer diameters of the first connecting port and the second connecting port are the same, the upper half of the connecting sleeve is formed with an internal thread structure, and the outer ring portion of the second connecting port is formed with an external thread structure connected to the internal thread structure.

[0014] Furthermore: the cold storage box is provided with a phase variable sensor for sensing the amount of phase change of the phase change material in the cold storage box.

[0015] Furthermore: one end of the cold storage box is provided with a cold storage liquid inlet connected to the ice storage coil and a heat dissipation liquid inlet connected to the ice melting coil, and the other end of the cold storage box is provided with a cold storage liquid outlet connected to the ice storage coil and a heat dissipation liquid outlet connected to the ice melting coil.

[0016] Furthermore: the cold storage liquid inlet and the cold storage liquid outlet are connected to a refrigeration unit, and the heat dissipation liquid inlet and the heat dissipation liquid outlet are connected to a cooling unit.

[0017] The beneficial effects of the present invention are as follows: the ice melting coil and the ice storage coil are both arranged in the cold storage box, the ice melting coil and the ice storage coil are both connected to the first connection port of the joint seat through the second connection port, and are sealed by the connection sleeve to prevent the liquid in the ice melting coil and the ice storage coil from leaking; when maintenance is needed, the front door of the maintenance port is opened, and the corresponding connection sleeve is separated from the pipeline. At this time, the corresponding ice melting coil or ice storage coil can be taken out of the cold storage box for replacement and maintenance without the need for complete disassembly, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the ice storage system.

[0019] Figure 2 This is a structural diagram of the cold storage box.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the cold storage box.

[0021] Figure 4 for Figure 3 A partial enlarged schematic diagram.

[0022] Figure 5 This is a structural diagram of the connection between the pipeline and the joint seat.

[0023] Reference numerals include:

[0024] 1-cold storage box,

[0025] 11-Maintenance port, 12-Front door, 13-Insulation layer, 14-Inlet and outlet breathing valve, 15-Phase variable sensor, 16-Cold storage liquid inlet, 17-Cold storage liquid outlet, 18-Heat dissipation liquid inlet, 19-Heat dissipation liquid outlet,

[0026] 2-Separator strips,

[0027] 21-installation slot, 22-exposed port, 23-phase change material, 24-ice storage coil, 25-ice melting coil,

[0028] 26-refrigeration unit, 27-unit condenser, 28-compressor, 29-cooling unit,

[0029] 3-connector seat,

[0030] 30-connecting sleeve, 31-first flow channel, 32-second flow channel, 33-first connecting port, 34-stop block,

[0031] 35-second connection port, 36-internal thread structure, 37-external thread structure, 38-sealing ring,

[0032] 39-Expansion valve. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-5As shown, an energy-saving ice storage system includes a cold storage box 1, a maintenance port 11 is formed on the front side of the cold storage box 1, and a front-opening door 12 is installed in the maintenance port 11. Pipes are arranged in the cold storage box 1, and the pipes include ice melting coils 25 and ice storage coils 24. The cold storage box 1 is filled with phase change material 23. A support structure for installing and arranging the ice melting coils 25 and the ice storage coils 24 is also provided in the cold storage box 1. The support structure includes a joint seat 3 connected to both ends of the pipe, the joint seat 3 is formed with a pair of pipe openings, and the pipe opening is formed with a raised first connecting port 33. The first connecting port 33 is movably mounted with a connecting sleeve 30, and both ends of the pipe are formed with second connecting ports 35 sealed with the connecting sleeve 30.

[0035] The ice melting coil 25 and the ice storage coil 24 are both arranged in the cold storage box 1. The ice melting coil 25 and the ice storage coil 24 are both connected to the first connection port 33 of the connector seat 3 through the second connection port 35, and are sealed by the connection sleeve 30 to prevent the liquid in the ice melting coil 25 and the ice storage coil 24 from leaking; when maintenance is required, the front door 12 of the maintenance port 11 is opened, and the corresponding connection sleeve 30 is separated from the pipeline. At this time, the corresponding ice melting coil 25 or ice storage coil 24 can be taken out from the cold storage box 1 for replacement and maintenance without complete disassembly, which is convenient for maintenance.

[0036] One end of the cold storage box 1 is provided with a cold storage liquid inlet 16 connected to the ice storage coil 24 and a heat dissipation liquid inlet 18 connected to the ice melting coil 25, and the other end of the cold storage box 1 is provided with a cold storage liquid outlet 17 connected to the ice storage coil 24 and a heat dissipation liquid outlet 19 connected to the ice melting coil 25.

[0037] The cold storage liquid inlet 16 and the cold storage liquid outlet 17 are connected to a refrigeration unit 26, and the ice storage coil 24 can be connected to an expansion valve 39. The refrigeration unit 26 can form an independent circulation refrigeration process with the ice storage coil 24 and the expansion valve 39 in the energy storage device to generate cold for the cold storage tank 1.

[0038] The refrigeration unit 26 can be a common refrigeration device on the market, such as an air conditioner outdoor unit, and can include components such as a unit condenser 27 and a compressor 28. The refrigeration unit 26 is a common existing technology, and the specific connection structure is not described in detail here.

[0039] In one embodiment, during the evening off-peak electricity price period (or other demand period), the refrigeration unit 26 is operated on demand, and the refrigerant of the refrigeration unit 26 enters the cold storage tank 1 through the cold storage liquid inlet 16. The refrigerant condenses in the ice storage coil 24 in the cold storage tank 1, thereby absorbing heat from the outside of the coil, causing the phase change material 23 filled in the energy storage device to lose heat. When the phase change material 23 loses heat, the temperature will drop. When the temperature drops to the phase change temperature point of the phase change material 23, the phase change material 23 will undergo a morphological phase change due to the continuous loss of heat, from liquid to solid, thereby realizing phase change energy storage.

[0040] During the daytime low electricity price period, the refrigeration unit 26 can be used less or not in operation. The heat dissipation liquid inlet 18 and the heat dissipation liquid outlet 19 are connected to the cooling unit 29. The cooling unit 29 transports liquid through the heat dissipation liquid inlet 18 and the ice melting coil 25. After the liquid enters the cold storage tank 1, the phase change material 23 will rise in temperature due to the active heat, and will undergo a morphological phase change from solid to liquid due to the continuous acquisition of heat, thereby achieving the cooling of the liquid in the ice melting coil 25. The liquid with a lower ambient temperature is introduced into the cooling unit 29 through the heat dissipation liquid inlet 18, thereby reducing the operating time of the refrigeration unit 26.

[0041] This solution can utilize the low-price electricity period in the evening to store energy, achieve the effect of shifting electricity consumption to fill the valley, reduce operating costs, and improve the operating efficiency of the energy storage air-conditioning system to achieve electricity saving effects.

[0042] A partition bar 2 for arranging phase change material 23 is provided in the cold storage box 1. The partition bar 2 is arranged in the cold storage box 1, and two adjacent partition bars 2 are arranged in parallel and spaced apart. The partition bars 2 and the pipelines are arranged alternately. The phase change material 23 will not squeeze the ice melting coil 25 and the ice storage coil 24, which is more convenient during maintenance and replacement.

[0043] The lengths of the two adjacent dividing bars 2 are the same, and the two adjacent dividing bars 2 are staggered, wherein the end of the first dividing bar 2 is against the top wall of the cold storage box 1, and there is a passing gap between the bottom end of the first dividing bar 2 and the bottom wall of the cold storage box 1, and the bottom of the second adjacent dividing bar 2 is against the bottom wall of the cold storage box 1, and there is a passing gap between the top end of the second dividing bar 2 and the bottom wall of the cold storage box 1. The two adjacent ice melting coils 25 can be connected through the joint seat 3 arranged at the end, so that multiple ice melting coils 25 and ice storage coils 24 can be arranged in the cold storage box 1, further increasing the cold storage energy.

[0044] Preferably, the dividing strip 2 is formed with a plurality of installation grooves 21 arranged at intervals along the length direction, and exposed openings 22 are formed at both ends of the installation grooves 21. The phase change material 23 is filled into the installation grooves 21 of the dividing strip 2, which can prevent the phase change material 23 from squeezing the ice melting coil 25 and the ice storage coil 24, making maintenance more convenient.

[0045] Furthermore, the joint seat 3 is installed in the through gap, and the first flow channel 31 and the second flow channel 32 are formed inside the joint seat 3, and the first connection port 33 is formed at both ends of the first flow channel 31 and the second flow channel 32 respectively, and the end of the first connection port 33 is formed with a stop block 34 to prevent the connecting sleeve 30 from falling off; when the pipeline needs to be installed, the second connection port 35 of the pipeline is coaxially aligned with the connecting sleeve 30, and then the connecting sleeve 30 is connected to the second connection port 35, so that the first connection port 33 is connected to the second connection port 35, and the two adjacent ice melting coils 25 are connected through the first flow channel 31 of the joint seat 3, and the two adjacent ice storage coils 24 are connected through the second flow channel 32 of the joint seat 3; multiple ice melting coils 25 are connected to each other, and multiple ice storage coils 24 are connected to each other.

[0046] Furthermore, the outer diameters of the first connecting port 33 and the second connecting port 35 are the same, the upper half of the connecting sleeve 30 is formed with an internal thread structure 36, and the outer ring portion of the second connecting port 35 is formed with an external thread structure 37 connected to the internal thread structure 36. When connected, the connecting sleeve 30 is connected to the external thread structure 37 of the second connecting port 35 through the internal thread structure 36 to achieve a threaded knob connection. A sealing ring 38 is arranged in the connecting sleeve 30 to ensure the sealing after connection, and ensure the sealing of the connection between the ice melting coil 25 and the ice storage coil 24 and the joint seat 3.

[0047] An insulation layer 13 is provided on or inside the cold storage box 1. The insulation layer 13 can be made of polyurethane, polystyrene, glass fiber wool, PE wool, or other insulation materials. The insulation layer 13 mainly insulates the cold storage box 1 and reduces heat exchange between the energy storage device and the outside world.

[0048] The energy storage tank's air inlet and outlet can be equipped with an air inlet and outlet breathing valve 14 to balance the pressure inside the energy storage tank with the external atmospheric pressure. During operation, air can flow through the air inlet and outlet breathing valve 14. When the phase change material 23 inside the energy storage device undergoes a phase change, its volume may change, causing a change in internal pressure. This valve can balance the pressure inside the energy storage device with that of the external atmosphere.

[0049] The cold storage tank 1 is provided with a phase variable sensor 15 for sensing the amount of phase change of the phase change material 23 in the cold storage tank 1, such as an ice amount sensor, which can sense the amount of ice that has phase changed in the liquid phase change material 23 in the energy storage device through ultrasonic or magnetic lines or rays, and feed back the corresponding data to the control device or other control device, which calculates and realizes the control of the refrigeration unit 26 and the terminal cooling load.

[0050] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0051] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. An energy-saving ice storage system, comprising a cold storage tank, characterized in that: A maintenance port is formed on the front side of the cold storage box, and a front-opening door is installed on the maintenance port. Pipes are arranged in the cold storage box, and the pipes include ice melting coils and ice storage coils. The cold storage box is filled with phase change material. A support structure for installing and arranging the ice melting coils and ice storage coils is also provided in the cold storage box. The support structure includes a joint seat connected to both ends of the pipe, and the joint seat is formed with a pair of pipe openings. The pipe opening is formed with a raised first connecting port, and a connecting sleeve is movably installed on the first connecting port. Second connecting ports sealed with the connecting sleeve are formed at both ends of the pipe.

2. The energy-saving ice storage system according to claim 1, characterized in that: The cold storage box is provided with a separation bar for arranging the phase change material. The separation bar is arranged in the cold storage box, two adjacent separation bars are arranged in parallel and spaced apart, and the separation bars and the pipelines are arranged alternately.

3. The energy-saving ice storage system according to claim 2, characterized in that: The lengths of the two adjacent dividing strips are the same, and the two adjacent dividing strips are staggered, wherein the end of the first dividing strip rests against the top wall of the cold storage box, and there is a passing gap between the bottom end of the first dividing strip and the bottom wall of the cold storage box, and the bottom of the second adjacent dividing strip rests against the bottom wall of the cold storage box, and there is a passing gap between the top end of the second dividing strip and the bottom wall of the cold storage box.

4. The energy-saving ice storage system according to claim 3, characterized in that: The partition strip is formed with a plurality of installation grooves arranged at intervals along the length direction, and exposed openings are formed at both ends of the installation grooves, and the phase change material is filled into the installation grooves of the partition strip.

5. The energy-saving ice storage system according to claim 4, characterized in that: The joint seat is installed in the through gap, and a heat-insulating layer is provided on the wall or inside of the cold storage box.

6. The energy-saving ice storage system according to claim 1, characterized in that: The connector seat has a first flow channel and a second flow channel formed inside, and the first connection ports are formed at both ends of the first flow channel and the second flow channel respectively, and a stop block is formed at the end of the first connection port to prevent the connecting sleeve from falling off.

7. The energy-saving ice storage system according to claim 6, characterized in that: The outer diameters of the first connecting port and the second connecting port are the same, an internal thread structure is formed on the upper half of the connecting sleeve, and an external thread structure connected to the internal thread structure is formed on the outer ring portion of the second connecting port.

8. The energy-saving ice storage system according to claim 1, characterized in that: The cold storage box is provided with a phase variable sensor for sensing the amount of phase change of the phase change material in the cold storage box.

9. The energy-saving ice storage system according to claim 1, characterized in that: One end of the cold storage box is provided with a cold storage liquid inlet connected to the ice storage coil and a heat dissipation liquid inlet connected to the ice melting coil, and the other end of the cold storage box is provided with a cold storage liquid outlet connected to the ice storage coil and a heat dissipation liquid outlet connected to the ice melting coil.

10. The energy-saving ice storage system according to claim 9, characterized in that: The cold storage liquid inlet and the cold storage liquid outlet are connected to a refrigeration unit, and the heat dissipation liquid inlet and the heat dissipation liquid outlet are connected to a cooling unit.

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