Intelligent refrigeration system utilizing electro-thermal conversion and phase change energy storage

Abstract

The invention provides an intelligent refrigeration system utilizing electro-thermal conversion and phase change energy storage, the intelligent refrigeration system comprises a phase change structure and an intelligent temperature control system, the phase change structure is arranged on a building body, and the temperature of the phase change structure during phase change is the phase change temperature; the intelligent temperature control system comprises a temperature detection device, an intelligent control system and a refrigeration device; the temperature detection device is connected with the intelligent control system, and the intelligent control system is electrically connected with the refrigeration device; the temperature detection device is used for measuring the indoor real-time temperature, the intelligent control system is used for receiving the measured real-time temperature and comparing the measured real-time temperature with the phase change temperature, and when the real-time temperature is larger than the phase change temperature, the intelligent control system controls the refrigeration device to be started. According to the intelligent refrigeration system, the phase change temperature of the phase change structure serves as the control temperature, the refrigeration system can be started to conduct mild cooling and enable the phase change structure to release heat when the electricity price is low, and the phase change structure absorbs heat to slowly rise the temperature after the refrigeration system is closed when the electricity price is high.

Description

Technical Field

[0001] The present invention relates to the field of intelligent temperature control technology, and in particular to an intelligent refrigeration system utilizing electric heat conversion and phase change energy storage. Background Art

[0002] The existing indoor floor heating method usually uses copper pipes or PVC plastic pipes with hot water buried under the indoor floor or tiles for heating. The same is true for cooling, usually using air conditioning to cool the entire room. However, when there is no one in the room, the above method will cause energy waste. Therefore, in the case of advocating green and low-carbon, an automatic cooling or heating system is needed, which can automatically control the temperature of the system according to the needs of indoor occupants to achieve resource rationalization and maximum utilization.

[0003] However, most temperature control systems have the following problems:

[0004] The temperature control system changes temperature according to the set temperature. It will heat or cool quickly during the startup process, and will also quickly cool down or heat up after stopping. Sudden and rapid temperature changes will make the user experience worse.

[0005] Most automatic temperature control systems are controlled according to the set temperature. While maintaining the temperature, it will also cause excess energy loss. In addition, electricity prices have peaks and troughs. If they are only turned on when the electricity price is low and turned off when the electricity price is high, although costs can be saved, the user's demand for temperature cannot be met, so cost and comfort cannot be achieved at the same time. Summary of the invention

[0006] The embodiment of the present invention provides an intelligent refrigeration system using electric heat conversion and phase change energy storage to solve one or more technical problems encountered in the prior art.

[0007] In a first aspect, an embodiment of the present invention provides an intelligent refrigeration system using electrothermal conversion and phase change energy storage, including:

[0008] A phase change structure, wherein the phase change structure is arranged on the building body, and the temperature at which the phase change structure undergoes phase change is the phase change temperature;

[0009] An intelligent temperature control system, the intelligent temperature control system comprising a temperature detection device, an intelligent control system and a refrigeration device; the temperature detection device is connected to the intelligent control system, and the intelligent control system is electrically connected to the refrigeration device; the temperature detection device is used to measure the real-time indoor temperature, and the intelligent control system is used to receive the measured real-time temperature and compare it with the phase change temperature. When the real-time temperature is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

[0010] In a preferred embodiment, the intelligent temperature control system further includes a human body detector for detecting whether there is anyone in the building. The human body detector is communicatively connected to the intelligent control system, and the intelligent control system is configured to receive the detection signal from the human body detector. When the human body detector outputs a signal indicating the presence of a person and the real-time temperature is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

[0011] In a preferred embodiment, the intelligent control system is configured to start or stop according to the factor information affecting the electricity price.

[0012] In a preferred embodiment, the intelligent control system is configured to start or stop according to the factor information affecting the electricity price, including:

[0013] When the factor information is electricity price information, the intelligent control system stops when the real-time electricity price is higher than the set electricity price, and the intelligent control system starts when the real-time electricity price is less than or equal to the set electricity price;

[0014] When the factor information is self-generated electricity information, the intelligent control system starts when there is self-generated electricity output, and the intelligent control system stops when there is no self-generated electricity input;

[0015] When the factor information is power spot trading information, the intelligent control system stops when the power trading price is higher than the average market power trading price, and the intelligent control system starts when the power trading price is less than or equal to the average market power trading price.

[0016] In a preferred embodiment, the intelligent temperature control system further includes a forced start device and a temperature limit device. The forced start device is connected to the intelligent control system and the human body detector, and the temperature limit device is connected to the refrigeration device;

[0017] When the forced start device receives a detection signal from the human body detector indicating the presence of a person, the forced start device is configured to keep the intelligent control system in an always-on state to control the refrigeration device to be in a forced start state; when the refrigeration device is in a forced start state, the temperature limit device is configured to reset the minimum refrigeration temperature of the refrigeration device according to the factor information affecting the electricity price.

[0018] In a preferred embodiment, the temperature limit device is configured to reset the minimum refrigeration temperature of the refrigeration device according to the factor information affecting the electricity price, including:

[0019] When the factor information is electricity price information, the temperature limit device is used to control the refrigeration device to increase the minimum refrigeration temperature when the real-time electricity price is higher than the set electricity price, and the temperature limit device is used to control the refrigeration device to lower the minimum refrigeration temperature when the real-time electricity price is less than or equal to the set electricity price;

[0020] When the factor information is self-generated electricity information, the temperature limit device is used to control the refrigeration device to lower the minimum refrigeration temperature when there is self-generated electricity output, and the temperature limit device is used to control the refrigeration device to increase the minimum refrigeration temperature when there is no self-generated electricity output;

[0021] When the factor information is electricity spot trading information, the temperature limit device is used to control the refrigeration device to increase the minimum refrigeration temperature when the electricity trading price is higher than the average market electricity trading price, and the temperature limit device is used to control the refrigeration device to lower the minimum refrigeration temperature when the electricity trading price is less than or equal to the average market electricity trading price.

[0022] In a preferred embodiment, the intelligent temperature control system further includes a temperature compensator. The temperature compensator is used to measure the outdoor temperature, the temperature compensator is used to generate a compensation signal according to the outdoor temperature, the temperature compensator is connected to the intelligent control system, and the intelligent control system is used to perform temperature compensation on the real-time temperature according to the compensation signal: The intelligent control system is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device.

[0023] In a preferred embodiment, the intelligent control system is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device, including:

[0024] When the outdoor temperature is less than or equal to the set temperature, the temperature compensator generates a normal temperature compensation signal. The intelligent control system is used to reduce the real-time temperature by a compensation value when receiving the normal temperature compensation signal. The intelligent control system is used to compare the real-time temperature after reducing the compensation value with the phase change temperature. When the real-time temperature after reducing the compensation value is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start;

[0025] When the outdoor temperature is higher than the set temperature, the temperature compensator generates a high temperature compensation signal. The intelligent control system is used to increase the real-time temperature by a compensation value when receiving the high temperature compensation signal. The intelligent control system is used to compare the real-time temperature after increasing the compensation value with the phase change temperature. When the real-time temperature after increasing the compensation value is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

[0026] One of the above technical solutions has the following advantages or beneficial effects: The intelligent refrigeration system uses the temperature at which the phase change structure undergoes a phase change as the control temperature. While changing the temperature, it can use the phase change material for energy storage and release to smooth out the temperature change of the temperature control system and provide a user experience. The intelligent refrigeration system can also be selected to start at low electricity prices for gentle cooling and release energy from the phase change structure. The intelligent refrigeration system shuts down at high electricity prices and uses the phase change structure to absorb energy and delay the temperature rise. In this way, low-cost electricity cooling is achieved, and the phase change structure is used to delay the temperature rise at high electricity prices, achieving further energy savings.

[0027] The above summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present invention and should not be regarded as limiting the scope of the present invention.

[0029] Figure 1 A schematic connection diagram showing the overall structure of the intelligent refrigeration system according to an embodiment of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0031] This embodiment provides an intelligent refrigeration system using electrothermal conversion and phase change energy storage. Refer to Figure 1 As shown, the intelligent refrigeration system includes a phase change structure 100 and an intelligent temperature control system 200.

[0032] The phase change structure 100 is provided on the building body, and the temperature at which the phase change structure 100 undergoes a phase change is the phase change temperature.

[0033] The intelligent temperature control system 200 includes a temperature detection device 210, an intelligent control system 220, and a refrigeration device 230; the temperature detection device 210 is used to measure the real-time indoor temperature; the temperature detection device 210 is connected to the intelligent control system 220, and the intelligent control system 220 is used to receive the measured real-time temperature and compare it with the phase change temperature. The intelligent control system 220 is electrically connected to the refrigeration device 230. When the real-time temperature is greater than the phase change temperature, the intelligent control system 220 controls the refrigeration device 230 to start. When the real-time temperature drops to the phase change temperature, the phase change structure has undergone a phase change to release energy. When the refrigeration device 230 is turned off, the phase change structure will absorb heat, which can not only extend the refrigeration time but also delay the temperature rise rate.

[0034] In this embodiment, the intelligent refrigeration system uses the temperature at which the phase change structure undergoes a phase change as the control temperature. While the temperature changes, the phase change material can be used for energy storage and release to smooth the temperature change of the temperature control system and provide a better user experience. The intelligent refrigeration system can also be selected to start when the electricity price is low for gentle cooling and to release energy from the phase change structure. When the electricity price is high, the intelligent refrigeration system is turned off, and the phase change structure is used to absorb energy to delay the temperature rise, thus achieving low-cost electricity cooling and using the phase change structure to delay the temperature rise at high electricity prices to further save energy.

[0035] In a specific embodiment, see Figure 1 As shown, the intelligent temperature control system 200 further includes a human detector 240. The human detector 240 is used to detect whether there is anyone in the building body. The human detector 240 is communicatively connected to the intelligent control system 220. The intelligent control system 220 is used to receive the detection signal of the human detector 240. When the human detector 240 outputs a signal indicating someone is present, the intelligent control system 220 is used to control the refrigeration device 230 to start and refrigerate to the set temperature.

[0036] In a specific embodiment, the intelligent control system 230 is used to start or stop according to the factor information affecting the electricity price.

[0037] Further, the intelligent control system 230 is used to start or stop according to the factor information affecting the electricity price, including:

[0038] When the factor information is electricity price information, the intelligent control system 230 stops when the real-time electricity price is higher than the set electricity price, and the intelligent control system 230 starts when the real-time electricity price is less than or equal to the set electricity price;

[0039] When the factor information is self-generated electricity information, the intelligent control system 230 starts when there is self-generated electricity output, and the intelligent control system 230 stops when there is no self-generated electricity input;

[0040] When the factor information is electricity spot trading information, the intelligent control system 230 stops when the electricity trading price is higher than the average market electricity trading price, and the intelligent control system 230 starts when the electricity trading price is less than or equal to the average market electricity trading price.

[0041] In a specific embodiment, refer to Figure 1 As shown, the intelligent temperature control system 200 further includes a forced start device 250 and a temperature limit device 260. The forced start device 250 is connected to the intelligent control system 220, the forced start device 250 is connected to the human body detector 240, and the temperature limit device 260 is connected to the refrigeration device 230;

[0042] When the forced start device 250 receives a detection signal from the human body detector 240 indicating that there is a person, the forced start device 250 is used to keep the intelligent control system 220 in an always-on state to control the refrigeration device 230 to be in a forced start state; when the refrigeration device 230 is in a forced start state, the temperature limit device 260 is used to reset the minimum refrigeration temperature of the refrigeration device 230 according to the factor information affecting the electricity price.

[0043] Further, the temperature limit device 260 is used to reset the minimum refrigeration temperature of the refrigeration device 230 according to the factor information affecting the electricity price, including:

[0044] When the factor information is electricity price information, the temperature limit device 260 is used to control the refrigeration device 230 to increase the minimum refrigeration temperature when the real-time electricity consumption price is higher than the set electricity consumption price, and the temperature limit device 260 is used to control the refrigeration device 230 to decrease the minimum refrigeration temperature when the real-time electricity consumption price is less than or equal to the set electricity consumption price;

[0045] When the factor information is self-generated electricity information, the temperature limit device 260 is used to control the refrigeration device 230 to decrease the minimum refrigeration temperature when there is self-generated electricity output, and the temperature limit device 260 is used to control the refrigeration device 230 to increase the minimum refrigeration temperature when there is no self-generated electricity output;

[0046] When the factor information is electricity spot trading information, the temperature limit device 260 is used to control the refrigeration device 230 to increase the minimum refrigeration temperature when the electricity trading price is higher than the average market electricity trading price, and the temperature limit device 260 is used to control the refrigeration device 230 to decrease the minimum refrigeration temperature when the electricity trading price is less than or equal to the average market electricity trading price.

[0047] In a specific embodiment, refer to Figure 1As shown, the intelligent temperature control system 200 further includes a temperature compensator 270. The temperature compensator 270 is used to measure the outdoor temperature, generate a compensation signal according to the outdoor temperature, and is connected to the intelligent control system 220. The intelligent control system 220 is used to perform temperature compensation on the real-time temperature according to the compensation signal: The intelligent control system 220 is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device 230.

[0048] Further, the intelligent control system 220 is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device 230, including:

[0049] When the outdoor temperature is higher than the set temperature, the temperature compensator 270 generates a high-temperature compensation signal. The intelligent control system 220 is used to increase the real-time temperature by a compensation value when receiving the high-temperature compensation signal. The intelligent control system 220 is used to compare the real-time temperature after increasing the compensation value with the phase change temperature. If the real-time temperature after increasing the compensation value is greater than the phase change temperature, the intelligent control system 220 controls the refrigeration device 230 to start;

[0050] When the outdoor temperature is less than or equal to the set temperature, the temperature compensator 270 generates a normal-temperature compensation signal. The intelligent control system 220 is used to decrease the real-time temperature by a compensation value when receiving the normal-temperature compensation signal. The intelligent control system 220 is used to compare the real-time temperature after decreasing the compensation value with the phase change temperature. If the real-time temperature after decreasing the compensation value is greater than the phase change temperature, the intelligent control system 220 controls the refrigeration device 230 to start.

[0051] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0053] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily conceive of various changes or substitutions, and these should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An intelligent refrigeration system using electrothermal conversion and phase change energy storage, characterized in that, Comprising: A phase change structure disposed on a building body, and the temperature at which the phase change structure undergoes a phase change is the phase change temperature; An intelligent temperature control system, which includes a temperature detection device, an intelligent control system, and a refrigeration device; the temperature detection device is connected to the intelligent control system, and the intelligent control system is electrically connected to the refrigeration device; the temperature detection device is used to measure the indoor real-time temperature, the intelligent control system is used to receive the measured real-time temperature and compare it with the phase change temperature, and when the real-time temperature is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

2. The intelligent refrigeration system using electrothermal conversion and phase change energy storage according to claim 1, wherein The intelligent temperature control system further includes a human body detector, which is used to detect whether there is a person in the building body. The human body detector is communicatively connected to the intelligent control system, and the intelligent control system is used to receive the detection signal of the human body detector. When the human body detector outputs a signal indicating the presence of a person, and when the real-time temperature is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

3. The intelligent refrigeration system using electrothermal conversion and phase change energy storage according to claim 2, characterized in that The intelligent control system is used to start or stop according to the factor information affecting the electricity price.

4. The intelligent refrigeration system using electro-thermal conversion and phase change energy storage according to claim 3, characterized in that, The intelligent control system is used to start or stop according to the factor information affecting the electricity price, including: When the factor information is electricity price information, the intelligent control system stops when the real-time electricity price is higher than the set electricity price, and the intelligent control system starts when the real-time electricity price is less than or equal to the set electricity price; When the factor information is self-generated electricity information, the intelligent control system starts when there is self-generated electricity output, and the intelligent control system stops when there is no self-generated electricity input; When the factor information is electricity spot trading information, the intelligent control system stops when the electricity trading price is higher than the average market electricity trading price, and the intelligent control system starts when the electricity trading price is less than or equal to the average market electricity trading price.

5. The intelligent refrigeration system using electrothermal conversion and phase change energy storage according to claim 4, characterized in that, The intelligent temperature control system further includes a forced start device and a temperature limit device. The forced start device is connected to the intelligent control system, and the forced start device is connected to the human body detector. The temperature limit device is connected to the refrigeration device; When the forced start device receives a detection signal from the human body detector indicating the presence of a person, the forced start device is used to keep the intelligent control system in an always-on state to control the refrigeration device to be in a forced start state; when the refrigeration device is in a forced start state, the temperature limit device is used to reset the minimum refrigeration temperature of the refrigeration device according to the factor information affecting the electricity price.

6. The intelligent refrigeration system using electrothermal conversion and phase change energy storage according to claim 5, characterized in that, The temperature limit device is used to reset the minimum refrigeration temperature of the refrigeration device according to the factor information affecting the electricity price, including: When the factor information is electricity price information, the temperature limit device is used to control the refrigeration device to increase the minimum refrigeration temperature when the real-time electricity price is higher than the set electricity price, and the temperature limit device is used to control the refrigeration device to lower the minimum refrigeration temperature when the real-time electricity price is less than or equal to the set electricity price; When the factor information is self-generated electricity information, the temperature limit device is used to control the refrigeration device to lower the minimum refrigeration temperature when there is self-generated electricity output, and the temperature limit device is used to control the refrigeration device to increase the minimum refrigeration temperature when there is no self-generated electricity output; When the factor information is electricity spot trading information, the temperature limiting device is used to control the refrigeration device to increase the minimum refrigeration temperature when the electricity trading price is higher than the average market electricity trading price, and the temperature limiting device is used to control the refrigeration device to lower the minimum refrigeration temperature when the electricity trading price is less than or equal to the average market electricity trading price.

7. The intelligent refrigeration system using electrothermal conversion and phase change energy storage according to any one of claims 1-6, characterized in that The intelligent temperature control system further includes a temperature compensator. The temperature compensator is used to measure the outdoor temperature. The temperature compensator is used to generate a compensation signal according to the outdoor temperature. The temperature compensator is connected to the intelligent control system. The intelligent control system is used to perform temperature compensation on the real-time temperature according to the compensation signal: The intelligent control system is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device.

8. The intelligent refrigeration system using electro-thermal conversion and phase change energy storage according to claim 7, characterized in that, The intelligent control system is used to compare the compensated real-time temperature with the phase change temperature to control the start or stop of the refrigeration device, including: When the outdoor temperature is less than or equal to the set temperature, the temperature compensator generates a normal temperature compensation signal. The intelligent control system is used to reduce the real-time temperature by a compensation value when receiving the normal temperature compensation signal. The intelligent control system is used to compare the real-time temperature after reducing the compensation value with the phase change temperature. When the real-time temperature after reducing the compensation value is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start; When the outdoor temperature is higher than the set temperature, the temperature compensator generates a high temperature compensation signal. The intelligent control system is used to increase the real-time temperature by a compensation value when receiving the high temperature compensation signal. The intelligent control system is used to compare the real-time temperature after increasing the compensation value with the phase change temperature. When the real-time temperature after increasing the compensation value is greater than the phase change temperature, the intelligent control system controls the refrigeration device to start.

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