Laboratory cold and heat recovery system and method

Abstract

According to the laboratory cold and heat recovery system and method, a cold and heat source generation side loop exchanges heat with an application side loop through a heat exchange module, a loop conversion module conducts a channel between the heat exchange module and the loop conversion module, and cold or heat is stored through a first water tank of the application side loop; in the application side self-circulation mode, the loop conversion module conducts a channel between the first output end and the first input end, a self-circulation channel is formed between the first water tank and the loop conversion module, and the application side can achieve cooling or heating through the cooling capacity or heat stored in the first water tank. Therefore, cold energy or heat generated in the experiment process is recycled, energy is stored and utilized in an energy storage mode, energy waste is avoided, and the utilization efficiency of energy is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air energy cooling and heating, and in particular to a laboratory heat recovery system and method. Background Art

[0002] During the scientific research process in schools, enterprises and other scientific research institutions, excess cold or heat will be generated. This part of energy usually needs to be neutralized by equipment such as electric heating, chillers or cooling towers, which not only increases the maintenance cost of these equipment, but also causes a waste of cold or heat resources and reduces energy utilization efficiency. Summary of the invention

[0003] The present invention provides a laboratory cold and heat recovery system and method, which recovers the cold or heat generated during the experiment, stores and utilizes the energy by means of energy storage, avoids energy waste, and improves energy utilization efficiency.

[0004] In a first aspect, an embodiment of the present invention provides a laboratory cold and heat recovery system, comprising: a cold and heat source generation side loop, an application side loop and a heat exchange module; the cold and heat source generation side loop and the application side loop exchange heat through the heat exchange module;

[0005] The cold and hot sources of the laboratory are arranged in the side loops of the cold and hot sources;

[0006] The application side loop includes a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module includes a first output end and a first input end; the first output end is connected to the first water tank, and the first water tank is connected to the first input end;

[0007] The circuit conversion module is used to conduct the passage between the heat exchange module and the circuit conversion module in the cooling or heat recovery mode, and the coolant of the application side circuit passes through the first input end, is recovered by the heat exchange module, and then output to the first water tank through the first output end, and the first water tank stores cooling or heat;

[0008] The circuit conversion module is used to open the passage between the first output end and the first input end in the application side self-circulation mode. The coolant of the application side circuit passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank, thereby forming a self-circulation passage.

[0009] Optionally, the laboratory heat and cold recovery system also includes a first sensing unit and a second sensing unit, wherein the first sensing unit is arranged in the heat and cold source generating side circuit, and is used to detect the first temperature of the heat and cold source generating side circuit; the second sensing unit is connected to the first water tank, and is used to detect the second temperature of the coolant in the first water tank.

[0010] Optionally, the laboratory heat and cold recovery system also includes a hot and cold water unit and a third sensing unit, the hot and cold water unit is arranged between the first output end and the first water tank, and the third sensing unit is arranged on the input side of the hot and cold water unit; the third sensing unit is used to detect the third temperature of the coolant on the input side of the hot and cold water unit, and the hot and cold water unit is used to control the output of cooling or heat of the application side loop according to the third temperature.

[0011] Optionally, the loop conversion module includes a first switch unit, a second switch unit and a third switch unit;

[0012] The first end of the first switch unit is connected to the heat exchange module, and the second end of the first switch unit serves as the first input end; the first end of the second switch unit is connected to the heat exchange module, and the second end of the second switch unit serves as the first output end; the first end of the third switch unit is connected to the second end of the first switch unit, and the second end of the third switch unit is connected to the second end of the second switch unit;

[0013] In the cooling or heat recovery mode, the first switch unit and the second switch unit are in the on state, and the third switch unit is in the off state; in the application side self-circulation mode, the first switch unit and the second switch unit are in the off state, and the third switch unit is in the on state.

[0014] Optionally, the loop conversion module further includes a fourth switch unit; a first end of the fourth switch unit is connected to a second end of the first switch unit, and a second end of the fourth switch unit is connected to the first water tank.

[0015] Optionally, the cold and heat source generating side circuit includes a second water tank and a first driving unit, the heat exchange module is connected to the second water tank, the second water tank is connected to the first driving unit, the first driving unit is connected to the cold and heat sources of the laboratory, and the cold and heat sources of the laboratory are connected to the heat exchange module.

[0016] Optionally, the application-side circuit includes a second driving unit, and the second driving unit is arranged between the first water tank and the first input end.

[0017] Optionally, the heat exchange module adopts a plate heat exchanger.

[0018] In a second aspect, an embodiment of the present invention provides a laboratory cold and heat recovery method, which is performed by a laboratory cold and heat recovery system, wherein the laboratory cold and heat recovery system comprises: a cold and heat source generation side loop, an application side loop and a heat exchange module; the cold and heat source generation side loop and the application side loop exchange heat through the heat exchange module; the cold and heat source of the laboratory is arranged in the cold and heat source generation side loop; the application side loop comprises a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module comprises a first output end and a first input end; the first output end is connected to the first water tank, and the first water tank is connected to the first input end;

[0019] The method comprises:

[0020] In the cooling or heat recovery mode, the circuit conversion module conducts the passage between the heat exchange module and the circuit conversion module, and the coolant of the application side circuit is input through the first input end, passes through the heat exchange module for heat exchange, and is output from the first output end, and the cooling or heat is stored in the first water tank;

[0021] In the application side self-circulation mode, the loop conversion module only conducts the path between the first output end and the first input end. The coolant of the application side loop is input through the first input end, output from the first output end, and returns to the first input end after passing through the first water tank, thereby forming a self-circulation path.

[0022] Optionally, the laboratory heat recovery system further includes a first sensing unit and a second sensing unit, wherein the first sensing unit is disposed in the heat source generation side loop and is used to detect a first temperature of the heat source generation side loop; the second sensing unit is disposed in the first water tank and is used to detect a second temperature of the coolant in the first water tank;

[0023] The method comprises:

[0024] When the cold or hot source of the laboratory provides cold or hot energy, the cold or hot energy recovery mode or the application-side self-circulation mode is entered according to the relationship between the first temperature and the second temperature.

[0025] In the laboratory cold and heat recovery system provided by the embodiment of the present invention, the cold and heat source generation side loop exchanges heat with the application side loop through the heat exchange module, the loop conversion module conducts the path between the heat exchange module and the loop conversion module, and the cold or heat is stored through the first water tank of the application side loop. In the self-circulation mode of the application side, the loop conversion module conducts the path between the first output end and the first input end, and a self-circulation path is formed between the first water tank and the loop conversion module. The application side can use the cold or heat stored in the first water tank to achieve cooling or heating. In this way, the cold or heat generated during the experiment can be recovered, and the energy can be stored and utilized by energy storage, thereby avoiding energy waste and improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a laboratory heat recovery system provided by an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of another laboratory heat recovery system provided by an embodiment of the present invention;

[0028] Figure 3 A schematic structural diagram of another laboratory heat recovery system provided by an embodiment of the present invention;

[0029] Figure 4 A schematic structural diagram of another laboratory heat recovery system provided by an embodiment of the present invention;

[0030] Figure 5 A schematic flow chart of a laboratory heat recovery method is provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Figure 1 A schematic diagram of a laboratory heat recovery system according to an embodiment of the present invention is shown in FIG. Figure 1 , including: a cold and heat source generating side loop 110, an application side loop 120 and a heat exchange module 130; the cold and heat source generating side loop 110 and the application side loop 120 exchange heat through the heat exchange module 130;

[0033] The cold and hot sources 111 of the laboratory are arranged in the cold and hot source generating side loop 110;

[0034] The application side loop 120 includes a first water tank 122 and a loop conversion module 121; the heat exchange module 130 is connected to the loop conversion module 121; the loop conversion module 121 includes a first output end and a first input end; the first output end is connected to the first water tank 122, and the first water tank 122 is connected to the first input end;

[0035] The circuit conversion module 121 is used to conduct the passage between the heat exchange module 130 and the circuit conversion module 121 in the cooling or heat recovery mode, and the coolant of the application side circuit 120 passes through the first input end, is recovered by the heat exchange module 130, and then is output from the first output end to the first water tank 122, and the cooling or heat is stored in the first water tank 122;

[0036] The loop conversion module 121 is used to open the passage between the first output end and the first input end in the application side self-circulation mode. The coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation passage.

[0037] Specifically, the cold and heat source 111 of the laboratory refers to the energy source formed by the heat or cold generated by the test equipment itself during the experiment, or the energy source formed by other equipment in order to heat up or cool down the test equipment during the experiment. In other words, the cold and heat source 111 of the laboratory can output the remaining heat or cold. The cold and heat source generating side loop 110 is the loop where the cold and heat source 111 of the laboratory is located. The cold and heat source generating side loop 110 can transfer the heat or cold output by the cold and heat source 111 of the laboratory to the heat exchange module 130. Heat is exchanged between the heat exchange module 130 and the coolant of the application side loop 120, so that the application side can use this part of energy to improve the utilization efficiency of energy. Among them, the application side may include activity areas that need heating or cooling, such as office areas, cafeteria areas, leisure areas, etc.

[0038] The application side loop 120 is a heat or cold recovery loop and an application side heat or cold delivery loop. The application side loop 120 includes a first water tank 122 and a loop conversion module 121. The first water tank 122 has a heat preservation function. The input end of the first water tank 122 is connected to the first output end of the loop conversion module 121. The output end of the first water tank 122 is connected to the first input end of the loop conversion module 121. A circulation path is formed between the first water tank 122 and the loop conversion module 121. It should be noted that the connection relationship in the above embodiment can be a direct pipeline connection relationship or an indirect pipeline connection relationship. For example, in some embodiments, in order to increase the flow power of the coolant on one side of the output end of the first water tank 122, a corresponding driving unit is set between the output end of the first water tank 122 and the first input end of the loop conversion module 121. For example, the driving unit is a water pump, and the water pump is used to increase the power of the coolant flow. At this time, the output end of the first water tank 122 and the first input end of the loop conversion module 121 are indirectly connected.

[0039] The cold or heat recovery mode is a working mode of the laboratory cold and heat recovery system, which stores the remaining cold or heat output by the cold and heat source 111 of the laboratory. When in the cold or heat recovery mode, the cold or heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, the coolant of the application side loop 120 recovers heat through the heat exchange module 130, and the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the cold or heat is stored through the first water tank 122.

[0040] The application side self-circulation mode is a working mode of the laboratory cold and heat recovery system, which uses the cold or heat stored in the first water tank 122 to provide cold or heat to the application side through self-circulation. In the application side self-circulation mode, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the cold or heat stored in the first water tank 122 to achieve cooling or heating.

[0041] In the laboratory cold and heat recovery system provided by the embodiment of the present invention, the cold and heat source generation side loop 110 exchanges heat with the application side loop 120 through the heat exchange module 130, the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, and the cold or heat is stored through the first water tank 122 of the application side loop 120. In the application side self-circulation mode, the loop conversion module 121 conducts the passage between the first output end and the first input end, and a self-circulation passage is formed between the first water tank 122 and the loop conversion module 121. The application side can use the cold or heat stored in the first water tank 122 to achieve cooling or heating. In this way, the cold or heat generated during the experiment can be recovered, and the energy can be stored and utilized by energy storage, thereby avoiding energy waste and improving energy utilization efficiency.

[0042] Based on the above embodiment, continue to refer to Figure 1 The laboratory heat and cold recovery system also includes a first sensor unit 140 and a second sensor unit 150. The first sensor unit 140 is arranged in the heat and cold source generating side loop 110, and is used to detect the first temperature of the heat and cold source generating side loop 110; the second sensor unit 150 is connected to the first water tank 122, and is used to detect the second temperature of the coolant in the first water tank 122.

[0043] Specifically, the first temperature may represent the temperature of the coolant in the cold and heat source generating side loop 110, and the first sensing unit 140 may be arranged at the output side of the cold and heat source 111 in the laboratory, or at the input side of the heat exchange module 130, so that the first sensing unit 140 may detect the temperature of the coolant entering the heat exchange module 130. The second temperature may represent the temperature in the first water tank 122, that is, the energy storage temperature of the application side loop 120.

[0044] Therefore, according to the relationship between the first temperature and the second temperature, the laboratory cold and heat recovery system can be controlled to enter the cold or heat recovery mode or the application-side self-circulation mode.

[0045] For example, in the cooling mode, if the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the cold and heat source 111 of the laboratory generates a large amount of cold, and the laboratory cold and heat recovery system enters the cold recovery mode, and the cold of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve cold recovery. The loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, and at this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the cold is stored through the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between the heat exchange module 130 and the heat exchange module 130, thereby stopping heat exchange.

[0046] Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the heat generated by the cold and heat source 111 of the laboratory is large, and the heat recovery mode can be entered. The heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve heat recovery. The loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the heat is stored through the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between the heat exchange module 130 and the heat exchange module 130, thereby stopping heat exchange.

[0047] In the cooling mode, if the first temperature is greater than the second temperature, or the first temperature is less than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the coldness stored in the first water tank 122 is better than the coldness generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered. The circuit conversion module 121 only conducts the passage between the first output end and the first input end. The coolant of the application side circuit 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation passage. Therefore, the application side can use the coldness stored in the first water tank 122 to achieve cooling.

[0048] Similarly, in the heating mode, if the first temperature is lower than the second temperature, or the first temperature is higher than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered. The circuit conversion module 121 only conducts the passage between the first output end and the first input end. The coolant of the application side circuit 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation passage. Therefore, the application side can use the heat stored in the first water tank 122 to achieve heating.

[0049] Figure 2 A schematic diagram of another laboratory heat recovery system provided by an embodiment of the present invention is shown in FIG. Figure 2 The laboratory heat and cold recovery system also includes a hot and cold water unit 160 and a third sensor unit 170. The hot and cold water unit 160 is arranged between the first output end and the first water tank 122, and the third sensor unit 170 is arranged on the input side of the hot and cold water unit 160; the third sensor unit 170 is used to detect the third temperature of the coolant on the input side of the hot and cold water unit 160, and the hot and cold water unit 160 is used to control the output of cold or heat of the application side loop 120 according to the third temperature.

[0050] Specifically, the hot and cold water unit 160 is a device that can generate cold water and hot water at the same time, and mainly realizes the transfer and conversion of heat energy through heat pump technology, thereby providing cooling and heating functions. The hot and cold water unit 160 is arranged between the first output end and the first water tank 122, that is, the coolant enters the first water tank 122 after passing through the hot and cold water unit 160. According to the cooling or heating demand of the application side, the temperature of the coolant can be regulated by starting and stopping the hot and cold water unit 160, so as to adjust the output of the cold or heat of the application side loop 120. The start and stop control of the hot and cold water unit 160 can be adjusted according to the relationship between the third temperature and the preset temperature. For example, in the cooling mode, if the third temperature is ≥12°C, it starts to provide auxiliary cooling capacity, and stops when the third temperature is <10°C, saving energy consumption. In the heating mode, if the third temperature is ≤38°C, it starts to provide auxiliary heat, and stops when the third temperature is >40°C, saving energy consumption.

[0051] Figure 3 A schematic diagram of another laboratory heat recovery system provided by an embodiment of the present invention is shown in FIG. Figure 3 , the loop conversion module 121 includes a first switch unit K1, a second switch unit K2 and a third switch unit K3;

[0052] The first end of the first switch unit K1 is connected to the heat exchange module 130, and the second end of the first switch unit K1 serves as the first input end; the first end of the second switch unit K2 is connected to the heat exchange module 130, and the second end of the second switch unit K2 serves as the first output end; the first end of the third switch unit K3 is connected to the second end of the first switch unit K1, and the second end of the third switch unit K3 is connected to the second end of the second switch unit K2;

[0053] In the cooling or heat recovery mode, the first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state; in the application side self-circulation mode, the first switch unit K1 and the second switch unit K2 are in the off state, and the third switch unit K3 is in the on state.

[0054] Specifically, in the cooling mode, if the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the cold and heat source 111 of the laboratory generates a large amount of cold, and enters the cold recovery mode. The cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant in the application side loop 120 exchanges heat through the heat exchange module 130 to achieve cold recovery. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, and the cold is stored by the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between it and the heat exchange module 130, thereby stopping heat exchange.

[0055] Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the heat generated by the cold and heat source 111 of the laboratory is large, and the heat recovery mode can be entered. The heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve heat recovery. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the heat is stored by the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between it and the heat exchange module 130, thereby stopping heat exchange.

[0056] In the cooling mode, if the first temperature is greater than the second temperature, or the first temperature is less than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the coldness stored in the first water tank 122 is better than the coldness generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered, the first switch unit K1 and the second switch unit K2 are in the off state, the third switch unit K3 is in the on state, and the coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the coldness stored in the first water tank 122 to achieve cooling.

[0057] Similarly, in the heating mode, if the first temperature is lower than the second temperature, or the first temperature is higher than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered, the first switch unit K1 and the second switch unit K2 are in the off state, the third switch unit K3 is in the on state, and the coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the heat stored in the first water tank 122 to achieve heating.

[0058] Figure 4 A schematic diagram of another laboratory heat recovery system provided by an embodiment of the present invention is shown in FIG. Figure 4 The loop conversion module 121 further includes a fourth switch unit K4 ; a first end of the fourth switch unit K4 is connected to a second end of the first switch unit K1 , and a second end of the fourth switch unit K4 is connected to the first water tank 122 .

[0059] Specifically, when the fourth switch unit K4 is in the on state, the hot and cold water unit 160 is bypassed, so in the cold or heat recovery mode, the hot and cold water unit 160 can be in the shutdown state, thereby reducing power consumption. At this time, the coolant of the application side loop 120 can be directly output to the first water tank 122 after heat exchange through the heat exchange module 130, and all cold or heat can be stored through the first water tank 122, thereby improving storage efficiency and avoiding loss of cold or heat.

[0060] When the fourth switch unit K4 is in the off state, the hot and cold water unit 160 can be in the on state. In the cooling or heat recovery mode, the hot and cold water unit 160 can adjust the output of the cooling or heat of the application side loop 120 by the third temperature to assist in cooling or heating the application side. Similarly, in the application side self-circulation mode, the hot and cold water unit 160 can also adjust the output of the cooling or heat of the application side loop 120 by the third temperature to assist in cooling or heating the application side.

[0061] Exemplarily, a specific time period is set by the control program, such as from 20:00 pm to 07:00 am. Since the demand for heating or cooling applications on the application side is low during such time periods, all the cooling or heat can be recovered.

[0062] For example, in the cooling mode, if the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the cold and heat source 111 of the laboratory generates a large amount of cold, and enters the cold recovery mode. The cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant in the application side loop 120 exchanges heat through the heat exchange module 130 to achieve cold recovery. The first switch unit K1, the second switch unit K2 and the fourth switch unit K4 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, and all the cold is stored in the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between it and the heat exchange module 130, thereby stopping heat exchange.

[0063] Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the heat generated by the cold and heat source 111 of the laboratory is large, and the heat recovery mode can be entered. The heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve heat recovery. The first switch unit K1, the second switch unit K2 and the fourth switch unit K4 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and all the heat is stored in the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between it and the heat exchange module 130, thereby stopping heat exchange.

[0064] During normal time periods, such as 07:00 in the morning to 20:00 in the evening, there is a demand for heating or cooling applications on the application side. Therefore, part of the cold or heat can be recovered, and part of it can be directly used for cooling or heating.

[0065] For example, in the cooling mode, if the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the cold and heat source 111 of the laboratory generates a large amount of cold, and enters a partial cold recovery mode. The cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant in the application side loop 120 exchanges heat through the heat exchange module 130 to achieve cold recovery. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 and the fourth switch unit K4 are in the off state. At this time, the coolant in the application side loop 120 passes through the cold and hot water unit 160, and is dissipated by the terminal device (fan or wind cabinet) to the application side for cooling through the regulation of the cold and hot water unit 160. Part of the cold is output to the first water tank 122, and the cold is stored by the first water tank 122.

[0066] Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the heat generated by the cold and heat source 111 of the laboratory is large, and the heat recovery mode can be entered. The heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant in the application side loop 120 exchanges heat through the heat exchange module 130 to achieve heat recovery. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 and the fourth switch unit K4 are in the off state. At this time, the coolant in the application side loop 120 passes through the cold and hot water unit 160, and is dissipated by the terminal device (fan or wind cabinet) to the application side for heating through the regulation of the cold and hot water unit 160. Part of the heat is output to the first water tank 122, and the heat is stored by the first water tank 122. Based on the above, when the first switch unit K1 and the second switch unit K2 are in the on state and the third switch unit K3 and the fourth switch unit K4 are in the off state, the cold or heat source 111 of the laboratory can directly participate in the cooling or heating on the application side, further improving the energy utilization rate.

[0067] When the cold and heat source 111 of the laboratory is not working, or in the cooling mode, the first temperature is greater than the second temperature, or the first temperature is less than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the cold capacity stored in the first water tank 122 is better than the cold capacity generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered, the first switch unit K1 and the second switch unit K2 are in the off state, the third switch unit K3 and the fourth switch unit K4 are in the on state, and the coolant of the application side loop 120 passes through the first input end and is directly output from the first output end. At this time, the coolant of the application side loop 120 passes through the cold and hot water unit 160, and is radiated to the application side by the terminal device (fan or wind cabinet) through the regulation of the cold and hot water unit 160. Part of the cold capacity is output to the first water tank 122, and the cold capacity is stored by the first water tank 122. The coolant returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the cold energy stored in the first water tank 122 and the hot and cold water unit 160 to provide cooling.

[0068] Similarly, in the heating mode, if the first temperature is lower than the second temperature, or the first temperature is higher than the second temperature, but the difference between the first temperature and the second temperature is lower than 2°C, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered, the first switch unit K1 and the second switch unit K2 are in the off state, the third switch unit K3 and the fourth switch unit K4 are in the on state, and the coolant of the application side loop 120 passes through the first input end and is directly output from the first output end. At this time, the coolant of the application side loop 120 passes through the cold and hot water unit 160, and is dissipated by the terminal device (fan or wind cabinet) through the control of the cold and hot water unit 160 to the application side for temperature increase. Part of the heat is output to the first water tank 122, and the heat is stored by the first water tank 122. The coolant returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the heat stored in the first water tank 122 and the cold and hot water unit 160 to achieve cooling.

[0069] Optionally, continue to refer to 4, the cold and heat source generation side loop 110 includes a second water tank 410 and a first drive unit 420, the heat exchange module 130 is connected to the second water tank 410, the second water tank 410 is connected to the first drive unit 420, the first drive unit 420 is connected to the cold and heat source 111 of the laboratory, and the cold and heat source 111 of the laboratory is connected to the heat exchange module 130. Specifically, the second water tank 410 also has a heat preservation function, which can store the cold or heat generated by the cold and heat source 111 of the laboratory, and provide storage space for the coolant of the cold and heat source generation side loop 110. The first drive unit 420 can be a water pump, which is arranged at the output side of the second water tank 410, and the first drive unit 420 is used to increase the power of the coolant flow. Optionally, the application side loop 120 includes a second drive unit 430, which is arranged between the first water tank 122 and the first input end. Specifically, the second drive unit 430 can be a water pump, which is arranged at the output side of the first water tank 122. The second drive unit 430 is used to increase the power of the coolant flow. Optionally, the heat exchange module 130 adopts a plate heat exchanger. The plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. It has the characteristics of high heat exchange efficiency, low heat loss, compact and light structure, small footprint, and long service life.

[0070] Figure 5 A flow chart of a laboratory heat recovery method is provided for an embodiment of the present invention, which is executed by a laboratory heat recovery system in any of the above embodiments. The device can be implemented in hardware and / or software. The method specifically includes the following steps:

[0071] S110, the circuit conversion module 121 is in the cooling or heat recovery mode, the passage between the heat exchange module 130 and the circuit conversion module 121 is connected, the coolant of the application side circuit 120 is input through the first input end, after heat exchange recovery by the heat exchange module 130, it is output from the first output end, and the cooling or heat is stored in the first water tank 122;

[0072] Specifically, the cold or heat recovery mode is a working mode of the laboratory cold and heat recovery system, which stores the remaining cold or heat output by the cold and heat source 111 of the laboratory. When in the cold or heat recovery mode, the cold or heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, the coolant of the application side loop 120 recovers heat through the heat exchange module 130, and the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the cold or heat is stored through the first water tank 122.

[0073] S120, the loop conversion module 121, in the application side self-circulation mode, opens the passage between the first output end and the first input end, and the coolant of the application side loop 120 is input through the first input end, output from the first output end, and returns to the first input end after passing through the first water tank 122, thereby forming a self-circulation passage.

[0074] Specifically, the application side self-circulation mode is a working mode of the laboratory cold and heat recovery system, which uses the cold or heat stored in the first water tank 122 to provide cold or heat to the application side through self-circulation. In the application side self-circulation mode, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can use the cold or heat stored in the first water tank 122 to achieve cooling or heating.

[0075] Optionally, the laboratory heat recovery system further includes a first sensor unit 140 and a second sensor unit 150, wherein the first sensor unit 140 is disposed in the heat source generation side loop 110, and is used to detect a first temperature of the heat source generation side loop 110; the second sensor unit 150 is disposed in the first water tank 122, and is used to detect a second temperature of the coolant in the first water tank 122;

[0076] Methods include:

[0077] When the cold and heat source 111 of the laboratory provides cold or heat, the cold or heat recovery mode or the application-side self-circulation mode is entered according to the relationship between the first temperature and the second temperature.

[0078] Specifically, the first temperature may represent the temperature of the coolant in the cold and heat source generating side loop 110, and the first sensing unit 140 may be arranged at the output side of the cold and heat source 111 in the laboratory, or at the input side of the heat exchange module 130, so that the first sensing unit 140 may detect the temperature of the coolant entering the heat exchange module 130. The second temperature may represent the temperature in the first water tank 122, that is, the energy storage temperature of the application side loop 120.

[0079] Therefore, according to the relationship between the first temperature and the second temperature, the laboratory cold and heat recovery system can be controlled to enter the cold or heat recovery mode or the application-side self-circulation mode.

[0080] For example, in the cooling mode, if the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is lower than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the cold and heat source 111 of the laboratory generates a large amount of cold, and the laboratory cold and heat recovery system enters the cold recovery mode, and the cold of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve cold recovery. The loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, and at this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the cold is stored through the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between the heat exchange module 130 and the heat exchange module 130, thereby stopping heat exchange.

[0081] Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirements, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3°C, it means that the heat generated by the cold and heat source 111 of the laboratory is large, and the heat recovery mode can be entered. The heat of the cold and heat source 111 of the laboratory enters the heat exchange module 130 through the cold and heat source generation side loop 110, and the coolant of the application side loop 120 exchanges heat through the heat exchange module 130 to achieve heat recovery. The loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant of the application side loop 120 can be output to the first water tank 122, and the heat is stored through the first water tank 122. When the first temperature and the second temperature are close to being equal, or the difference between the two is within a preset range, the loop conversion module 121 can cut off the passage between the heat exchange module 130 and the heat exchange module 130, thereby stopping heat exchange.

[0082] In the cooling mode, if the first temperature is greater than the second temperature, or the first temperature is less than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the coldness stored in the first water tank 122 is better than the coldness generated by the cold and heat source 111 of the laboratory, and the application side self-circulation mode can be entered. The circuit conversion module 121 only conducts the passage between the first output end and the first input end. The coolant of the application side circuit 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation passage. Therefore, the application side can use the coldness stored in the first water tank 122 to achieve cooling.

[0083] Similarly, in the heating mode, if the first temperature is lower than the second temperature, or the first temperature is lower than the second temperature, but the difference between the first temperature and the second temperature is less than 2°C, it means that the heat stored in the first water tank 122 is better than the heat generated by the laboratory's cold and heat source 111, and the application side self-circulation mode can be entered, and the loop conversion module 121 only conducts the passage between the first output end and the first input end, and the coolant of the application side loop 120 passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank 122, forming a self-circulation passage. Therefore, the application side can use the heat stored in the first water tank 122 to achieve heating.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laboratory heat recovery system, characterized in that: include: A cold and hot source generation side loop, an application side loop and a heat exchange module; the cold and hot source generation side loop and the application side loop exchange heat through the heat exchange module; The cold and hot sources of the laboratory are arranged in the side loops of the cold and hot sources; The application side loop includes a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module includes a first output end and a first input end; the first output end is connected to the first water tank, and the first water tank is connected to the first input end; The circuit conversion module is used to conduct the passage between the heat exchange module and the circuit conversion module in the cooling or heat recovery mode, and the coolant of the application side circuit passes through the first input end, is recovered by the heat exchange module, and then output to the first water tank through the first output end, and the first water tank stores cooling or heat; The circuit conversion module is used to open the passage between the first output end and the first input end in the application side self-circulation mode. The coolant of the application side circuit passes through the first input end, is directly output from the first output end, and returns to the first input end after passing through the first water tank, thereby forming a self-circulation passage.

2. The laboratory heat recovery system according to claim 1, characterized in that: It also includes a first sensing unit and a second sensing unit. The first sensing unit is arranged in the cold and heat source generating side circuit and is used to detect the first temperature of the cold and heat source generating side circuit; the second sensing unit is connected to the first water tank and is used to detect the second temperature of the coolant in the first water tank.

3. The laboratory heat recovery system according to any one of claims 1-2, characterized in that: It also includes a hot and cold water unit and a third sensor unit, the hot and cold water unit is arranged between the first output end and the first water tank, and the third sensor unit is arranged on the input side of the hot and cold water unit; the third sensor unit is used to detect the third temperature of the coolant on the input side of the hot and cold water unit, and the hot and cold water unit is used to control the output of cooling or heat of the application side circuit according to the third temperature.

4. The laboratory heat recovery system according to claim 3, characterized in that: The loop conversion module includes a first switch unit, a second switch unit and a third switch unit; The first end of the first switch unit is connected to the heat exchange module, and the second end of the first switch unit serves as the first input end; the first end of the second switch unit is connected to the heat exchange module, and the second end of the second switch unit serves as the first output end; the first end of the third switch unit is connected to the second end of the first switch unit, and the second end of the third switch unit is connected to the second end of the second switch unit; In the cooling or heat recovery mode, the first switch unit and the second switch unit are in the on state, and the third switch unit is in the off state; in the application side self-circulation mode, the first switch unit and the second switch unit are in the off state, and the third switch unit is in the on state.

5. The laboratory heat recovery system according to claim 4, characterized in that: The loop conversion module also includes a fourth switch unit; a first end of the fourth switch unit is connected to a second end of the first switch unit, and a second end of the fourth switch unit is connected to the first water tank.

6. The laboratory heat recovery system according to claim 1, characterized in that: The cold and heat source generating side circuit includes a second water tank and a first driving unit, the heat exchange module is connected to the second water tank, the second water tank is connected to the first driving unit, the first driving unit is connected to the cold and heat sources of the laboratory, and the cold and heat sources of the laboratory are connected to the heat exchange module.

7. The laboratory heat recovery system according to claim 6, characterized in that: The application-side circuit includes a second driving unit, and the second driving unit is arranged between the first water tank and the first input end.

8. The laboratory heat recovery system according to claim 1, characterized in that: The heat exchange module adopts a plate heat exchanger.

9. A laboratory heat recovery method, characterized in that: It is executed by the laboratory cold and heat recovery system, which includes: a cold and heat source generation side loop, an application side loop and a heat exchange module; the cold and heat source generation side loop and the application side loop exchange heat through the heat exchange module; the cold and heat source of the laboratory is arranged in the cold and heat source generation side loop; the application side loop includes a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module includes a first output end and a first input end; the first output end is connected to the first water tank, and the first water tank is connected to the first input end; The method comprises: In the cooling or heat recovery mode, the circuit conversion module conducts the passage between the heat exchange module and the circuit conversion module, and the coolant of the application side circuit is input through the first input end, passes through the heat exchange module for heat exchange, and is output from the first output end, and the cooling or heat is stored in the first water tank; In the application side self-circulation mode, the loop conversion module only conducts the path between the first output end and the first input end. The coolant of the application side loop is input through the first input end, output from the first output end, and returns to the first input end after passing through the first water tank, thereby forming a self-circulation path.

10. The laboratory heat and cold recovery method according to claim 9, characterized in that: The laboratory cold and heat recovery system also includes a first sensor unit and a second sensor unit, wherein the first sensor unit is arranged in the cold and heat source generation side loop, and is used to detect a first temperature of the cold and heat source generation side loop; The second sensing unit is disposed in the first water tank and is used to detect a second temperature of the coolant in the first water tank; The method comprises: When the cold or hot source of the laboratory provides cold or hot energy, the cold or hot energy recovery mode or the application-side self-circulation mode is entered according to the relationship between the first temperature and the second temperature.

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