Refrigeration and cold storage integrated phase change energy storage device

Abstract

The invention discloses a refrigeration and cold storage integrated phase change energy storage device which comprises a device body, a fan coil, a table type host, a liquid crystal display, a cold storage tank, a water cooling unit, a cold storage pump and a cold storage and release loop. The fan coil and the table type host are arranged on the upper layer of the device body, and the liquid crystal display is externally embedded into the upper layer of the device body; the cold storage tank is arranged on the middle layer of the device body, the water cooling unit and the cold storage pump are arranged on the bottom layer of the device body, and the water cooling unit, the fan coil and the cold storage tank are communicated through the cold storage and release loop which comprises a main pipeline, an inner circulation pipeline, a cold storage pipeline, a water outlet pipeline and a water inlet pipeline. A cold meter is arranged on a main pipeline shared by an outlet of the water chilling unit and an inlet of the fan coil, and water outlet pipelines and water inlet pipelines are arranged on the water chilling unit, the cold storage tank and the fan coil. According to the system, the water chilling unit, the cold storage system and the temperature and humidity adjusting function are integrated, visual management and regulation of the commercial refrigeration system are achieved, and the system has high application value.

Description

Technical Field

[0001] The present invention relates to the technical field of phase change energy storage, and in particular to a refrigeration and cold storage integrated phase change energy storage device. Background Art

[0002] Under the background of the "dual carbon" goal, renewable energy has developed rapidly. As the proportion of renewable energy continues to increase, the power system has shown characteristics such as intermittency and volatility, which has brought new challenges to the operation of the power grid. Energy storage technology has gradually become a key support for achieving energy transformation. Among them, phase change energy storage, due to its high energy density and good reversibility, shows great potential in helping to absorb renewable energy, improve energy utilization efficiency and achieve good economic benefits. The main characteristics of phase change energy storage are: it can balance supply and demand on the grid side, improve the flexibility of the power system, meet load demand, and effectively reduce carbon emissions. In addition, in the field of heating and cooling, phase change energy storage technology can achieve low-carbon transformation and contribute to the realization of carbon neutrality.

[0003] In areas with high cooling demand and tight electricity supply and demand, phase change cold storage technology, as a phase change energy storage technology, has broad application prospects. The integrated phase change energy storage device for refrigeration and cold storage is an innovative solution that combines phase change cold storage technology with actual application scenarios. This integrated phase change energy storage device for refrigeration and cold storage organically combines phase change material packaging and system integration to form a compact and efficient overall device. Beneficial effects can be obtained in actual application scenarios. For example, during the peak period of electricity supply and demand in summer, the system can use the nighttime period when electricity prices are lower to store cold, and release the stored cold energy during the day, which can both alleviate the load on the power grid and provide the required cooling capacity. Users can use existing air-conditioning units to store cold during the off-peak period of electricity consumption; during the peak period of electricity consumption, the cold storage tank is used to supply cold instead of the unit, thereby saving operating costs.

[0004] In view of the above problems, the present invention provides a refrigeration and cold storage integrated phase change energy storage device which integrates refrigeration, cold storage, temperature and humidity regulation and monitoring. Summary of the invention

[0005] The present invention provides a refrigeration and cold storage integrated phase change energy storage device which integrates refrigeration, cold storage, temperature and humidity regulation and monitoring.

[0006] The object of the present invention is to provide a refrigeration and cold storage integrated phase change energy storage device, comprising a device body, a fan coil unit, a desktop host, a liquid crystal display, a cold storage tank, a water cooling unit, a cold storage pump and a cold storage and release circuit, the fan coil unit and the desktop host are arranged on the upper layer of the device body, the liquid crystal display is externally embedded in the upper layer of the device body, the cold storage tank is arranged in the middle layer of the device body, the water cooling unit and the cold storage pump are arranged in the bottom layer of the device body, the water cooling unit, the fan coil unit and the cold storage tank are all connected through the cold storage and release circuit, the cold storage and release circuit comprises a main pipeline, an internal circulation pipeline, a cold storage pipeline, a water outlet pipeline and a water inlet pipeline, a cold meter is provided on the main pipeline shared by the outlet of the water cooling unit and the inlet of the fan coil unit, and the cold unit, the cold storage tank and the fan coil unit are all provided with a water outlet pipeline and a water inlet pipeline.

[0007] Furthermore, a first pipeline temperature sensor and a second pipeline temperature sensor are respectively provided on the water inlet pipe and the water outlet pipe of the water cooling unit, a third pipeline temperature sensor is provided on the main pipe, a fourth pipeline temperature sensor and a fifth pipeline temperature sensor are respectively provided on the water inlet pipe and the water outlet pipe of the cold storage tank, and a sixth pipeline temperature sensor and a seventh pipeline temperature sensor are respectively provided on the water outlet pipe and the water inlet pipe of the fan coil unit.

[0008] Furthermore, a first pressure transmitter and a second pressure transmitter are respectively provided on the water cooling unit and the water inlet pipe and the water outlet pipe, a third pressure transmitter and a fourth pressure transmitter are respectively provided on the water inlet pipe and the water outlet pipe of the cold storage tank, and a fifth pressure transmitter and a sixth pressure transmitter are respectively provided on the water inlet pipe and the water outlet pipe of the fan coil unit.

[0009] Furthermore, a first proportional three-way ball valve is arranged at the junction of the water inlet pipe of the water cooling unit and the main pipe between the cold storage tank and the water cooling unit, a second proportional integral three-way valve is arranged at the junction of the water outlet pipe of the cold storage tank and the main pipe between the cold storage tank and the water cooling unit, and a third proportional integral three-way valve is arranged at the junction of the water outlet pipe of the fan coil unit and the internal circulation pipe.

[0010] Furthermore, a first electric two-way ball valve is provided on the water outlet pipe of the fan coil unit, a second electric two-way ball valve is provided on the cold storage pipe, a third electric two-way ball valve is provided on the water inlet pipe of the fan coil unit, and a fourth electric two-way ball valve is provided on the water outlet pipe of the water cooling unit.

[0011] Furthermore, the cold storage tank is used to place the cold storage plates. Several layers of cold storage plates are arranged in the cold storage tank. Each layer of the cold storage plates is composed of two cold storage plates, and several immersion temperature sensors are placed every two layers.

[0012] Furthermore, the humidity sensor and the wind speed sensor are both arranged at the air outlet of the fan coil unit.

[0013] The invention has the following advantages: It integrates efficient refrigeration and intelligent cold storage functions, adopts a shell-mounted design, has a compact appearance, is easy to install, and is portable. Its modular design provides multiple capacity options, and users can flexibly select or combine modules according to actual needs to achieve capacity expansion, ensure efficient energy utilization, and adapt to different environments.

[0014] By linking with the building automation system, the present invention can implement intelligent control strategies, promote efficient coordination of refrigeration and cold storage functions, thereby improving overall operating efficiency and energy utilization, and bringing users a user experience of lower energy consumption and higher comfort.

[0015] The present invention introduces the Internet of Things and artificial intelligence technologies to achieve remote monitoring, fault diagnosis and automatic adjustment, and is equipped with a user-friendly APP or web interface, allowing users to view device status, adjust settings and receive maintenance reminders anytime and anywhere. The integrated AI intelligent prediction algorithm automatically optimizes cold storage and refrigeration strategies based on historical data and real-time environmental information. The intelligent scheduling system automatically adjusts the cold storage and cooling periods according to the peak and valley electricity prices of the power grid, achieving energy conservation and consumption reduction and "peak shifting and valley filling" of power load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the device of the present invention;

[0017] Figure 2 It is a schematic diagram of the process of the present invention;

[0018] Figure 3 It is a schematic diagram of the cold storage tank structure of the present invention.

[0019] In the figure: 1, fan coil; 2, desktop host; 3, LCD; 4, cold storage tank; 5, water cooling unit; 6, cold storage pump; 7, first pipeline temperature sensor; 8, second pipeline temperature sensor; 9, third pipeline temperature sensor; 10, fifth pipeline temperature sensor; 11, fourth pipeline temperature sensor; 12, seventh pipeline temperature sensor; 13, sixth pipeline temperature sensor; 14, first pressure transmitter sensor; 15, second pressure transmitter sensor; 16, fourth pressure transmitter sensor; 17, third pressure transmitter sensor ; 18. Sixth pressure transmitter; 19. Fifth pressure transmitter; 20. Wind speed sensor; 21. First proportional integral three-way valve; 22. Second proportional integral three-way valve; 23. Third proportional integral three-way valve; 24. First electric two-way ball valve; 25. Second electric two-way ball valve; 26. Third electric two-way ball valve; 27. Cold meter; 28. Internal circulation pipeline; 29. ​​Cold storage pipeline; 30. Main pipeline; 31. Immersion temperature sensor; 32. Cold storage plate; 33. Device body; 34. Fourth electric two-way ball valve; 35. Humidity sensor. DETAILED DESCRIPTION

[0020] The present invention provides a refrigeration and cold storage integrated phase change energy storage device, comprising a device body 33, a fan coil unit 1, a desktop host 2, a liquid crystal display 3, a cold storage tank 4, a water cooling unit 5, a cold storage pump 6 and a cold storage and release circuit, wherein the fan coil unit 1 and the desktop host 2 are arranged on the upper layer of the device body 33, the liquid crystal display 3 is externally embedded in the upper layer of the device body 33, the cold storage tank 4 is arranged in the middle layer of the device body 33, the water cooling unit 5 and the cold storage pump 6 are arranged in the bottom layer of the device body 33, the water cooling unit 5, the fan coil unit 1 and the cold storage tank 4 are all connected through the cold storage and release circuit, the cold storage and release circuit comprises a main pipeline 30, an internal circulation pipeline 28, a cold storage pipeline 29, a water outlet pipeline and a water inlet pipeline, a cold meter 27 is provided on the main pipeline 30 shared by the outlet of the water cooling unit 5 and the inlet of the fan coil unit 1, and the water cooling unit 5, the cold storage tank 4 and the fan coil unit 1 are all provided with a water outlet pipeline and a water inlet pipeline.

[0021] In this embodiment, a first pipeline temperature sensor 7 and a second pipeline temperature sensor 8 are respectively provided on the water inlet pipe and the water outlet pipe of the water cooling unit 5, a third pipeline temperature sensor 9 is provided on the main pipe 30 shared by the outlet of the cold storage tank 4 and the inlet of the water cooling unit 5, a fourth pipeline temperature sensor 11 and a fifth pipeline temperature sensor 10 are respectively provided on the water inlet pipe and the water outlet pipe of the cold storage tank 4, and a sixth pipeline temperature sensor 13 and a seventh pipeline temperature sensor 12 are respectively provided on the water inlet pipe and the water outlet pipe of the fan coil unit 1.

[0022] In this embodiment, the water cooling unit 5 and the water inlet pipe and the water outlet pipe are respectively provided with a first pressure transmitter 14 and a second pressure transmitter 15, the water inlet pipe and the water outlet pipe of the cold storage tank 4 are respectively provided with a third pressure transmitter 17 and a fourth pressure transmitter 16, and the water inlet pipe and the water outlet pipe of the fan coil unit 1 are respectively provided with a fifth pressure transmitter 19 and a sixth pressure transmitter 18.

[0023] In this embodiment, a first electric two-way ball valve 24 is provided on the water outlet pipe of the fan coil unit 1, a second electric two-way ball valve 25 is provided on the cold storage pipe 29, a third electric two-way ball valve 26 is provided on the water inlet pipe of the fan coil unit 1, and a fourth electric two-way ball valve 34 is provided on the water outlet pipe of the water cooling unit 5.

[0024] In this embodiment, the cold storage tank 4 is used to place the cold storage plates 32. Several layers of cold storage plates 32 are arranged in the cold storage tank 4. Each layer of the cold storage plates 32 is composed of two cold storage plates 32, and several immersion temperature sensors 31 are placed every two layers.

[0025] In this embodiment, the humidity sensor 35 and the wind speed sensor 20 are both arranged at the air outlet of the fan coil unit 1 .

[0026] In this embodiment, the fan coil unit 1 adopts a high-efficiency AC motor, which can automatically adjust the air volume and wind speed according to the indoor humidity.

[0027] In this embodiment, the desktop host 2 uses industrial-grade hardware to store, analyze, and process data such as temperature, humidity, wind speed, and pressure, and can be remotely monitored through the network.

[0028] In this embodiment, the cold storage tank 4 is used to place the cold storage plate 32 to store the cold energy produced by the water cooling unit 5 to meet the cooling demand during the peak period of electricity consumption.

[0029] In this embodiment, the liquid crystal display 3 is used to intuitively display data such as cooling capacity, humidity, temperature, wind speed and pressure, and these parameters can be adjusted through the human-computer interaction interface.

[0030] In this embodiment, the water cooling unit 5 can directly provide cooling for the device, and can also provide cooling for the cold storage tank 4, using environmentally friendly refrigerant, with high energy efficiency and reliability.

[0031] In this embodiment, the cold storage pump 6 is used to drive the refrigerant to circulate between the water cooling unit 5, the fan coil 1 and the cold storage tank 4, and is equipped with a frequency conversion controller to save energy.

[0032] In this embodiment, when the water cooling unit 5 directly supplies cooling, the water cooling unit 5, the first proportional integral three-way valve 21 (left and right), the second proportional integral three-way valve 22 (upper right), the third proportional integral three-way valve 23 (upper and lower), the first electric two-way ball valve 24, the third electric two-way ball valve 26, the fourth electric two-way ball valve 34 and the cold meter 27 are opened, and the cold energy generated by the water cooling unit 5 is transported to the cold storage pump 6 through the pipeline system, and the cold energy is transmitted to the fan coil 1 under the drive of the cold storage pump 6, so that the cold energy can be released, thereby realizing refrigeration.

[0033] In this embodiment, when cold storage is in operation, the water cooling unit 5, the first proportional integral three-way valve 21 (left and right), the second proportional integral three-way valve 22 (left and right), the second electric two-way ball valve 25, the fourth electric two-way ball valve 34, the cold meter 27 and the cold storage pump 6 are opened, and the cold energy generated by the water cooling unit 5 is transmitted to the cold storage pump 6 through the central pipeline, and the cold energy is transmitted to the cold storage plate 32 in the cold storage tank 4 through the pipeline system under the drive of the cold storage pump 6. The cold storage plate 32 is placed in the cold storage tank 4, and a hydrated salt low-temperature cold storage phase change material is encapsulated therein, and the cold energy is used to make the phase change material undergo phase change, thereby realizing cold storage.

[0034] In this embodiment, after cold storage is completed, the second electric two-way ball valve 25, the fourth electric two-way ball valve 34 and the first proportional integral three-way valve 21 (right) are closed, and the third electric two-way ball valve 26, the first proportional integral three-way valve 21 (upper), and the third proportional integral three-way valve 23 (upper and lower) are opened. Driven by the cold storage pump 6, the cold energy is transmitted to the fan coil 1 through the pipeline system and then released to achieve refrigeration.

[0035] Although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of the present invention. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the scope of protection of the present invention.

Claims

1. A refrigeration and cold storage integrated phase change energy storage device, comprising a device body, a fan coil unit, a desktop host, a liquid crystal display, a cold storage tank, a water cooling unit, a cold storage pump and a cold storage and release circuit, characterized in that: The fan coil unit and desktop host are arranged on the upper layer of the device body, the liquid crystal display is embedded in the upper layer of the device body, the cold storage tank is arranged in the middle layer of the device body, the water cooling unit and the cold storage pump are arranged in the bottom layer of the device body, the water cooling unit, the fan coil unit and the cold storage tank are all connected through a cold storage and release circuit, the cold storage and release circuit includes a main pipeline, an internal circulation pipeline, a cold storage pipeline, a water outlet pipeline and a water inlet pipeline, a cold meter is provided on the main pipeline shared by the outlet of the water cooling unit and the inlet of the fan coil unit, and the water cooling unit, the cold storage tank and the fan coil unit are all provided with a water outlet pipeline and a water inlet pipeline.

2. A refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: The water inlet pipe and the water outlet pipe of the water cooling unit are respectively provided with a first pipeline temperature sensor and a second pipeline temperature sensor, the main pipe is provided with a third pipeline temperature sensor, the water inlet pipe and the water outlet pipe of the cold storage tank are respectively provided with a fourth pipeline temperature sensor and a fifth pipeline temperature sensor, and the water outlet pipe and the water inlet pipe of the fan coil are respectively provided with a sixth pipeline temperature sensor and a seventh pipeline temperature sensor.

3. A refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: The water cooling unit and the water inlet pipe and the water outlet pipe are respectively provided with a first pressure transmitter and a second pressure transmitter, the water inlet pipe and the water outlet pipe of the cold storage tank are respectively provided with a third pressure transmitter and a fourth pressure transmitter, and the water inlet pipe and the water outlet pipe of the fan coil are respectively provided with a fifth pressure transmitter and a sixth pressure transmitter.

4. A refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: A first proportional three-way valve is arranged at the junction of the water inlet pipe of the water cooling unit and the main pipe between the cold storage tank and the water cooling unit, a second proportional integral three-way valve is arranged at the junction of the water outlet pipe of the cold storage tank and the main pipe between the cold storage tank and the water cooling unit, and a third proportional integral three-way valve is arranged at the junction of the water outlet pipe of the fan coil unit and the internal circulation pipe.

5. A refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: A first electric two-way ball valve is arranged on the water outlet pipe of the fan coil unit, a second electric two-way ball valve is arranged on the cold storage pipe, a third electric two-way ball valve is arranged on the water inlet pipe of the fan coil unit, and a fourth electric two-way ball valve is arranged on the water outlet pipe of the water cooling unit.

6. A refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: The cold storage tank is used to place cold storage plates. Several layers of cold storage plates are arranged in the cold storage tank. Each layer of the cold storage plates is composed of two cold storage plates, and several immersion temperature sensors are placed every two layers.

7. The refrigeration and cold storage integrated phase change energy storage device according to claim 1, characterized in that: The humidity sensor and the wind speed sensor are both arranged at the air outlet of the fan coil unit.

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