A set cold refrigeration device

Abstract

The utility model provides a kind of set cold refrigeration device, comprising: set cold plate (3), water replenishing tank (12), coaxial sleeve (21), cold air machine (16);Coaxial sleeve (21) is arranged in rock-soil layer (20);Set cold plate (3) is arranged outside rock-soil layer (20);Cold air machine (16) is arranged in indoor;Multiple coaxial sleeves (21) are interconnected to form cold storage assembly, one end of cold storage assembly is connected with the lower end of water replenishing tank (12) by first pipeline (31), and the other end of cold storage assembly is connected with the pipeline of cold air machine (16);The other end of cold storage assembly is also connected with the return water outlet pipeline of set cold plate (3);The upper end of water replenishing tank (12) is connected with the water outlet pipeline of set cold plate (3) by fifth pipeline (35).The utility model provides the complete scheme of "collection→storage→supply" of natural cold energy, collects natural cold energy in winter by radiator, is stored in rock-soil by buried pipe group in summer, and the effect is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically to a cold collection refrigeration device. Background Technology

[0002] The invention of air conditioning has allowed humans to enjoy much-needed coolness in the sweltering summer. It provides cooling and creates comfortable room temperatures, ensuring a comfortable living and working environment. For example, maintaining an indoor temperature of around 26°C in hot weather makes people feel cool and comfortable. However, the widespread use of air conditioning also brings two major drawbacks: massive electricity consumption and pollution from non-environmentally friendly refrigerants. In terms of electricity consumption, air conditioning is a high-energy-consuming appliance, especially in high temperatures. Concentrated use can lead to a surge in grid load, increasing electricity costs and potentially exacerbating carbon emissions due to the high proportion of coal-fired power generation. Regarding refrigerant pollution, traditional refrigerants such as Freon deplete the ozone layer. While newer refrigerants have lower ozone-depleting potential, some still have a high greenhouse effect potential; leaks could exacerbate global warming and have long-term impacts on the ecological environment.

[0003] In summary, the existing technology has the following problems: how to achieve environmentally friendly and energy-saving refrigeration. Utility Model Content

[0004] This utility model provides a cooling device that solves the technical problem of how to achieve environmentally friendly and energy-saving cooling.

[0005] To achieve the above objectives, this utility model proposes a cooling and refrigeration device, comprising: Cold plate, water supply tank, coaxial sleeve, and air cooler; The coaxial sleeve is installed in the soil and rock layer; the cold collection plate is installed outside the soil and rock layer; the air cooler is installed indoors; Multiple coaxial sleeves are interconnected to form a cold storage assembly. One end of the cold storage assembly is connected to the lower end of the water supply tank through a first pipeline, and the other end of the cold storage assembly is connected to the cooler pipeline. The other end of the cold storage assembly is also connected to the return water inlet pipeline of the cold collection plate. The upper end of the water supply tank is connected to the outlet pipe of the cooling plate via the fifth pipe.

[0006] Specifically, the other end of the cold storage component is connected to a second pipeline, which is connected to both the third and fourth pipelines; the third and fourth pipelines are connected in parallel.

[0007] Specifically, the fourth pipe is connected to the return water inlet pipe of the cold collection plate, and the third pipe is connected to the air cooler.

[0008] Specifically, the third pipeline is equipped with a second normally closed electric ball valve and a pressure gauge for the cooling supply pipeline; the fourth pipeline is equipped with an underground energy storage temperature probe, a first normally closed electric ball valve and a pressure gauge for the cooling collection pipeline; and the first pipeline is equipped with a circulation pump.

[0009] Specifically, the circulating pump is connected to a dual power supply switch.

[0010] Specifically, the fifth pipeline is connected to the fourth pipeline via a sixth pipeline; A normally open electric ball valve is installed on the sixth pipeline.

[0011] Specifically, the device also includes: a cold return interface and a cold supply interface; The cold return interface is connected to the fifth pipeline; the cold supply interface is connected to the third pipeline.

[0012] Specifically, the device further includes: a temperature difference controller and a cooling temperature controller; the temperature difference controller is installed indoors, and the cooling temperature controller is installed indoors. The temperature difference controller is electrically connected to the normally open electric ball valve, the first normally closed electric ball valve, and the circulating pump. The cooling temperature controller is electrically connected to the air cooler.

[0013] Specifically, the device further includes: an inlet water separator and a return water separator; The inlet water separator is connected to the return water separator; the return water separator is located at the top of the coaxial sleeve, and the inlet water separator is located above the return water separator.

[0014] Specifically, the first pipeline is connected to the inlet water separator, and the second pipeline is connected to the return water separator.

[0015] The beneficial technical effects of the above technical solution are as follows: 1. This utility model uses multi-column radiators as the front end of the cooling system, not for the purpose of pursuing a unique appearance, but because under the same outline area, the heat exchange area of ​​the working fluid interface of the radiator is more than ten times larger than that of the tube plate type front end, which means that the heat exchange efficiency between the cooling plate and the outside is also many times higher. The heat exchange process is the cooling process, and the purchase cost is also greatly reduced.

[0016] 2. The method of pipe laying in underground energy storage boreholes has been changed from U-shaped pipes to coaxial sleeves, and the pipe connection between boreholes has been changed from series to parallel. These two measures can produce the following effects: a) Reduce the thermal resistance between the pipe wall and the soil layer; b) Reduce the resistance of working fluid circulation and save electricity for the circulation pump; c) Eliminate the disadvantage of the narrow sedimentation space at the bottom of the U-shaped pipe, which is prone to clogging; d) Reduce the borehole diameter and lower drilling costs; e) Eliminate the need for the filling process between buried pipes.

[0017] 3. Diverse Cooling Scenarios. a) Residential Cooling: Anyone who can install underfloor heating can install such a cooling system. Radiators, galvanized pipes, water pumps, and PE pipes are readily available. The cooling collection section is installed on the roof, the water supply tank and pump are installed indoors, and the cold storage section is installed underground in the yard. Simple adjustments allow you to enjoy the same cooling effect as a high-end air conditioner. b) Centralized Cooling: Local heating companies have long coveted the opportunity to expand centralized cooling services using existing pipelines, but have struggled to find affordable cold sources. Utilizing free natural cold sources eliminates concerns about high cooling costs, making this system a viable option. c) District Cooling: Providing district cooling to the three "furnace cities" of Nanjing, Wuhan, and Chongqing can also be considered. While summers there are unbearably hot, winters are still cold. Taking Nanjing as an example, the average winter temperature is 5℃, and the average nighttime temperature is 0℃. Lowering the temperature of the cooling field to 5-10℃ is easily achievable, which is already an ideal cooling water temperature.

[0018] 4. In addition to meeting various cooling needs, this application also has an ice-making function. As long as the local winter temperature needs to be below -15℃, by replacing the working fluid with antifreeze, disconnecting the power supply to the drain valve, and manually closing it, the temperature of the cold field can be easily lowered to below -10℃. In summer, this low-temperature working fluid can be used to directly make ice. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a cooling device after installation according to an embodiment of the present invention; Figure 2 This is a circuit wiring diagram of a cooling device according to an embodiment of this utility model; Figure 3 for Figure 1 A magnified schematic diagram of part B in the diagram. Explanation of icon numbers: 1. One-way valve; 2. Temperature probe for cold collection plate; 3. Cold collection plate; 4. Differential temperature controller; 5. Normally open electric ball valve; 6. Pressure gauge for cold collection pipeline; 7. Pressure gauge for cold supply pipeline; 8. Cold return interface; 9. Cold supply interface; 10. Dual power switch; 11. Circulating pump; 12. Make-up water tank; 13. Temperature probe for underground energy storage body; 14. First normally closed electric ball valve; 15. Second normally closed electric ball valve; 16. Air cooler; 17. Cold supply thermostat; 18. Inlet water distributor; 19. Return water distributor; 20. Soil and rock layer; 21. Coaxial sleeve; 31. First pipeline; 32. Second pipeline; 33. Third pipeline; 34. Fourth pipeline; 35. Fifth pipeline; 36. Sixth pipeline. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a cold energy collection and refrigeration device that collects cold energy from the winter atmosphere by installing a multi-column radiator array outdoors, and then uses a water pump to transport the collected cold energy to a group of buried pipes, which is then conducted to the surrounding soil and rock for storage. The energy can be retrieved at any time in the summer for cooling, thereby achieving the two major goals of reducing energy consumption and eliminating refrigerant pollution.

[0022] This utility model embodiment provides a cooling device for collecting cold energy, such as... Figure 1 As shown, it includes: Cold plate 3, water supply tank 12, coaxial sleeve 21, air cooler 16; The coaxial sleeve 21 is installed in the soil layer 20 and is a buried sleeve; the cold collection plate 3 is installed outside the soil layer 20; the air cooler 16 is installed indoors; the cold collection plate 3 is composed of rows of radiators, each radiator having four inlet and outlet ports, connected by professional pipe fittings to form a low-inlet, high-outlet layout, and the pipeline must not have a reverse slope. A check valve 1 is installed in front of the outlet of the cold collection plate 3. The check valve 1 serves two purposes: first, to prevent the loss of circulating working fluid; and second, to provide an air intake channel when the working fluid is emptied. The cold collection plate 3 is equipped with a cold collection plate temperature probe 2, which can monitor the internal temperature of the cold collection plate 3 in real time.

[0023] Multiple coaxial sleeves 21 are interconnected to form a cold storage component. One end of the cold storage component is connected to the lower end of the water supply tank 12 through the first pipeline 31, and the other end of the cold storage component is connected to the pipeline of the air cooler 16. The other end of the cold storage component is also connected to the return water inlet pipeline of the cold collection plate 3. The pipes in the underground energy storage borehole are coaxial sleeves 21, and the underground energy storage boreholes are connected in parallel. This reduces the thermal resistance of the coaxial sleeves 21 in contact with the soil and rock layers, reduces the resistance of the working fluid circulation, saves electricity for the circulation pump, and eliminates the disadvantage of the previous U-shaped pipe having a small sedimentation space at the bottom that is easy to be blocked.

[0024] The upper end of the water replenishment tank 12 is connected to the outlet pipe of the cooling plate 3 via the fifth pipe 35. The system's water replenishment function is completed by the water replenishment tank 12. When replenishing water, the tank cover is opened for manual replenishment. The water level is allowed to reach the middle position of the tank before replenishment is stopped. The tank cover is then closed, ensuring that there is sufficient space at the top of the tank to accommodate the return water from the cooling plate. A level gauge is installed outside the tank to monitor water level changes and replenish water in a timely manner. The outlet of the water replenishment tank is located at the bottom of the tank and is directly connected to a manual valve. The inlet of the circulation pump 11 is connected to the manual valve. The outlet of the circulation pump 11 is piped underground and connected to the inlet of the underground water inlet device 18.

[0025] The other end of the cold storage component is connected to a second pipe 32, which is connected to both the third pipe 33 and the fourth pipe 34; the third pipe 33 and the fourth pipe 34 are connected in parallel. The fourth pipe 34 is connected to the return water inlet pipe of the cold collection plate 3, and the third pipe 33 is connected to the air cooler 16. A second normally closed electric ball valve 15 and a cold supply pipe pressure gauge 7 are installed on the third pipe 33; a temperature probe 13 of the underground energy storage body, a first normally closed electric ball valve 14 and a cold collection pipe pressure gauge 6 are installed on the fourth pipe 34; a circulating pump 11 is installed on the first pipe 31. The circulating pump 11 is connected to a dual power switch 10. To reduce system costs, the circulating pump is designed to be dual-purpose, with the power supply of the circulating pump 11 connected to the output of the dual power switch 10. The two inputs of the dual power switch 10 are connected to the output of the temperature difference controller 4 (cold collection controller) and the output of the cold supply temperature controller 17, respectively.

[0026] The fifth pipeline 35 and the fourth pipeline 34 are connected through the sixth pipeline 36; a normally open electric ball valve 5 is installed on the sixth pipeline 36.

[0027] The cooling and refrigeration unit also includes: a cold return interface 8 and a cold supply interface 9; the cold return interface 8 is connected to the fifth pipeline 35; and the cold supply interface 9 is connected to the third pipeline 33.

[0028] like Figure 2 As shown, the cooling and refrigeration unit also includes: a temperature difference controller 4 and a cooling temperature controller 17; the temperature difference controller 4 is installed indoors, and the cooling temperature controller 17 is installed indoors; the temperature difference controller 4 is electrically connected to the normally open electric ball valve 5, the first normally closed electric ball valve 14 and the circulating pump 11; the cooling temperature controller 17 is electrically connected to the air cooler 16.

[0029] The cooling system also includes an inlet water separator 18 and a return water separator 19; the inlet water separator 18 and the return water separator 19 are connected; the return water separator 19 is located at the top of the coaxial sleeve 21, and the inlet water separator 18 is located above the return water separator 19. A first pipe 31 is connected to the inlet water separator 18, and a second pipe 32 is connected to the return water separator 19. The inlet water separator 18 is composed of multiple tee fittings connected in series, with the inner port of each tee connected to a downward-flowing core tube, such as... Figure 3As shown, the core tube passes through the bottom of the return water distributor 19 via a four-way connector. The bottom end of the core tube is not sealed, and the distance between the bottom opening and the bottom end of the outer sleeve must be greater than 10cm. The return water distributor 19 is composed of the same number of four-way pipe fittings connected in a straight line. The upper end of the four-way pipe fitting is connected to the lower outer end of the tee of the inlet water distributor, and the lower end of the four-way pipe fitting is connected to the upper outer sleeve. The bottom end of the outer sleeve must be effectively sealed.

[0030] The operation process is as follows: Cooling operation: The working principle is forced circulation due to temperature difference. The temperature difference controller 4 is programmed to run in cooling mode. When the temperature difference between the cooling plate 3 and the energy storage body is higher than the start-up set value, the output voltage is turned on. The normally open electric ball valve 5, the first normally closed electric ball valve 14, and the circulation pump 11 are energized at the same time. The working fluid flows along the following path: water supply tank 12 → circulation pump 11 → inlet water separator 18 → coaxial sleeve 21 → return water separator 19 → underground energy storage body temperature probe 13 → first normally closed electric ball valve 14 → cooling plate 3 → water supply tank 12.

[0031] As one implementation method, the working fluid of the cold collection plate is de-frozen and vented: the working principle is gravity venting. When the temperature difference between the cold collection plate and the energy storage body is lower than the set closing temperature difference, the temperature difference controller 4 shuts off the output voltage, the normally open electric ball valve 5 is de-energized and opens, and the first normally closed electric ball valve 14 and the circulation pump 11 are de-energized and close. The one-way valve 1 opens to allow air intake due to the negative pressure in the cavity of the cold collection plate 3, and the working fluid in the cold collection plate 3 flows back to the water replenishment tank along the following path: cold collection plate 3 → normally open electric ball valve 5 → water replenishment tank 12; Cooling operation: The operation is controlled by a set temperature value on the cooling thermostat 17 installed near the air cooler 16 indoors. When the room temperature is higher than the set value, the output voltage is turned on, and the second normally closed electric ball valve 15 and the circulating pump 11 are simultaneously energized. The working fluid flows along the following path to cool the air cooler 16 and other cooling terminal equipment. The circulation stops when the room temperature drops to the set value. Water supply tank 12 → Circulation pump 11 → Inlet water distributor 18 → Coaxial sleeve 21 → Return water distributor 19 → Underground energy storage temperature probe 13 → Second normally closed electric ball valve 15 → Cold supply interface 9 → Cold return interface 8 → Water supply tank 12.

[0032] This utility model provides a complete solution for the "collection → storage → supply" of natural cold energy. It collects natural cold energy in winter through a multi-column radiator array, stores it in the soil and rock via underground pipe networks, and provides cooling in summer, achieving significant technical benefits. First, it is highly efficient and energy-saving, using natural cold energy to replace compressor refrigeration, avoiding high energy consumption; the dual-purpose design of the circulation pump further reduces power consumption. Second, it is environmentally friendly and pollution-free, requiring no non-environmentally friendly refrigerants, eliminating damage to the ozone layer and the greenhouse effect. Third, it has high cold and heat exchange efficiency; the multi-column radiator has more than ten times the front-end heat exchange area of ​​the tube sheet type, and the underground coaxial sleeve parallel pipe layout reduces thermal resistance and circulation resistance, improving the efficiency of cold energy collection and transfer. Fourth, it is multifunctional, meeting the needs of residential, centralized, and district cooling; it can even make ice when the winter temperature is below -15℃. Fifth, it is low-cost; the purchase cost of the radiators is low, and the reduced drilling diameter and elimination of the filling process lower construction costs, facilitating widespread application.

[0033] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. The various components of this utility model can be combined with each other without conflict. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A cold concentrating refrigeration device, characterized in that, include: Cold collection plate (3), water supply tank (12), coaxial sleeve (21), air cooler (16); The coaxial sleeve (21) is installed in the soil layer (20); the cold collection plate (3) is installed outside the soil layer (20); the air cooler (16) is installed indoors; Multiple coaxial sleeves (21) are interconnected to form a cold storage assembly. One end of the cold storage assembly is connected to the lower end of the water supply tank (12) through the first pipeline (31), and the other end of the cold storage assembly is connected to the pipeline of the air cooler (16). The other end of the cold storage assembly is also connected to the return water inlet pipeline of the cold collection plate (3). The upper end of the water supply tank (12) is connected to the outlet pipe of the cold collection plate (3) through the fifth pipe (35).

2. A cold production device according to claim 1, characterized in that The other end of the cold storage component is connected to a second pipe (32), which is connected to the third pipe (33) and the fourth pipe (34); the third pipe (33) and the fourth pipe (34) are connected in parallel.

3. A cold production device according to claim 2, characterized in that The fourth pipe (34) is connected to the return water pipe of the cold collection plate (3), and the third pipe (33) is connected to the air cooler (16).

4. A cold production device according to claim 2, characterized in that The third pipeline (33) is equipped with a second normally closed electric ball valve (15) and a cooling pipeline pressure gauge (7); the fourth pipeline (34) is equipped with an underground energy storage temperature probe (13), a first normally closed electric ball valve (14) and a cooling pipeline pressure gauge (6); the first pipeline (31) is equipped with a circulation pump (11).

5. A cold production device according to claim 4, characterized in that The circulating pump (11) is connected to a dual power switch (10).

6. A cold production device according to claim 2, characterized in that The fifth pipeline (35) is connected to the fourth pipeline (34) via the sixth pipeline (36); A normally open electric ball valve (5) is installed on the sixth pipeline (36).

7. A cold production device according to claim 6, characterized in that The device also includes: a cold return interface (8) and a cold supply interface (9). The cold return interface (8) is connected to the fifth pipeline (35); the cold supply interface (9) is connected to the third pipeline (33).

8. A cold production device according to claim 7, characterized in that The device further includes: a temperature difference controller (4) and a cooling temperature controller (17); the temperature difference controller (4) is installed indoors, and the cooling temperature controller (17) is installed indoors; The temperature difference controller (4) is electrically connected to the normally open electric ball valve (5), the first normally closed electric ball valve (14), and the circulating pump (11); The cooling temperature controller (17) is electrically connected to the air cooler (16).

9. A cold production device according to claim 2, characterized in that The device further includes: an inlet water separator (18) and a return water separator (19). The inlet water separator (18) is connected to the return water separator (19); the return water separator (19) is located at the top of the coaxial sleeve (21), and the inlet water separator (18) is located above the return water separator (19).

10. A cold production device according to claim 9, characterized in that The first pipeline (31) is connected to the inlet water separator (18), and the second pipeline (32) is connected to the return water separator (19).

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