Laboratory waste heat recovery constant temperature system

Abstract

The utility model discloses a laboratory waste heat recovery constant temperature system which comprises a laboratory, a first heat exchange system, a second heat exchange system, a third heat exchange system, a first heat exchange shell, an air supply pipe, an air outlet pipe and a water supplementing water tank. A thermostatic chamber is arranged in the laboratory; according to the system, an air outlet pipe and a liquid-gas separator are arranged, a third evaporator in the liquid-gas separator is used for absorbing waste heat of air exhausted from a constant-temperature chamber, then the air passes through a third heat exchange system, a second heat exchange system and a first heat exchange system in sequence, the waste heat is conveyed into the first heat exchange system, and the air about to enter the constant-temperature chamber is heated; and the heated air is reheated through the first heater and finally conveyed into the constant-temperature chamber to ensure the temperature in the constant-temperature chamber, so that the heating capacity of the heater is reduced, the overall energy consumption is reduced, and waste heat recycling and environmental protection are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal energy, in particular to a laboratory waste heat recovery constant temperature system. Background Art

[0002] In laboratories, constant temperature chambers are commonly used equipment. Constant temperature chambers are essential testing equipment in the fields of electronics, electrical appliances, communications, instruments, vehicles, plastic products, metals, food, chemicals, building materials, medical treatment, aerospace, and scientific research. They are used to test and determine the results and performance of product materials after undergoing high-temperature, low-temperature, or constant-temperature tests. Announcement number CN206861885U discloses a constant temperature chamber, including an insulating wall, a heating device, and a temperature sensor; the temperature sensor is fixedly mounted on the insulating wall, and the heating device is mounted on the upper portion of the insulating wall. The heating device includes a steam coil, a steam engine, a bellows, and an air duct. The steam coil is connected to the steam engine via a steam delivery pipe. A space for accommodating the steam coil and the bellows is provided on the upper portion of the insulating wall. One end of the air duct is connected to the bellows, and the other end is mounted on the inner wall of the insulating wall. This constant temperature chamber consumes a certain amount of energy, but the waste heat cannot be recovered and reused, resulting in a high overall energy consumption. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an environmentally friendly laboratory waste heat recovery constant temperature system.

[0004] To achieve the above-mentioned purpose, the solution provided by the present invention is as follows: a laboratory waste heat recovery constant temperature system, comprising a laboratory, a first heat exchange system, a second heat exchange system, a third heat exchange system, a first heat exchange shell, an air supply pipe, an air outlet pipe, and a water supply tank, wherein the first heat exchange system is connected to the second heat exchange system, the second heat exchange system is connected to the third heat exchange system, a constant temperature chamber is provided in the laboratory, the first heat exchange shell is connected to the air supply pipe, the air supply pipe is connected to the constant temperature chamber, a first heater is provided in the air supply pipe, the constant temperature chamber is connected to the air outlet pipe, the air outlet pipe is connected to a liquid-gas separator, the liquid discharge port of the liquid-gas separator is connected to the water supply tank, the water supply tank is connected to a second air inlet pipe, and the second air inlet pipe is connected to the constant temperature chamber;

[0005] The first heat exchange system includes a first condenser, which is disposed in a first heat exchange shell; the third heat exchange system includes a third evaporator, which is disposed in a liquid-gas separator.

[0006] The beneficial effects of the present utility model are: realizing waste heat recovery and utilization, the system is provided with an air outlet pipe and a liquid-gas separator, and utilizing the third evaporator in the liquid-gas separator to absorb the waste heat of the air discharged from the constant temperature chamber, and then sequentially passes through the third heat exchange system, the second heat exchange system, and the first heat exchange system to transport the waste heat to the first heat exchange system, heating the air about to enter the constant temperature chamber, and the heated air is again heated by the first heater, and finally transported to the constant temperature chamber to ensure the temperature in the constant temperature chamber, thereby reducing the heating amount of the heater, reducing the overall energy consumption, realizing waste heat recovery and utilization, and being environmentally friendly; at the same time, by providing a liquid-gas separator, the separated liquid is transported to the water supply tank for further collection and utilization.

[0007] Furthermore, a plurality of storage racks are provided in the constant temperature chamber. After adopting the above structure, the present invention can place constant temperature experimental samples.

[0008] Furthermore, the first heat exchange system also includes a first compression pump, a first throttle valve, and a first evaporator. The first compression pump is connected to the first condenser, the first condenser is connected to the first throttle valve, the first throttle valve is connected to the first evaporator, and the first evaporator is connected to the first compression pump.

[0009] Furthermore, it also includes a first heat exchange tank, and the second heat exchange system includes a second condenser, a second compression pump, a second throttle valve, and a second evaporator. The second compression pump is connected to the second condenser, the second condenser is connected to the second throttle valve, the first throttle valve is connected to the second evaporator, and the second evaporator is connected to the second compression pump. The first evaporator and the second condenser are respectively arranged in the first heat exchange tank.

[0010] Furthermore, it also includes a second heat exchange tank, and the third heat exchange system includes a third condenser, a third compression pump, and a third throttle valve. The third compression pump is connected to the third condenser, the third condenser is connected to the third throttle valve, the third throttle valve is connected to the third evaporator, and the third evaporator is connected to the third compression pump. The second evaporator and the third condenser are respectively arranged in the second heat exchange tank.

[0011] Furthermore, the first heat exchange shell is connected to a first air inlet pipe.

[0012] Furthermore, both the first air inlet pipe and the second air inlet pipe are provided with a blower.

[0013] Furthermore, a second heater is provided in the water supply tank. After adopting the above structure, the utility model can generate water vapor and transport it to the constant temperature room to maintain the humidity.

[0014] Furthermore, the water replenishment tank is connected to a water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall principle diagram of the utility model.

[0016] Among them, 1 is a laboratory, 11 is a constant temperature room, 111 is a storage rack, 12 is an air supply pipe, 121 is a first heater, 13 is an air outlet pipe, 14 is a first air inlet pipe, 15 is a second air inlet pipe, 16 is a blower, 17 is a first heat exchange shell, 21 is a first compression pump, 22 is a first condenser, 23 is a first throttle valve, 24 is a first evaporator, 31 is a second compression pump, 32 is a second condenser, 33 is a second throttle valve, 34 is a second evaporator, 41 is a first compression pump, 42 is a first condenser, 43 is a first throttle valve, 44 is a first evaporator, 5 is a liquid-gas separator, 6 is a water supply tank, 61 is a second heater, 62 is a water inlet pipe, 71 is a first heat exchange tank, and 72 is a second heat exchange tank. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] See attached Figure 1As shown, a laboratory waste heat recovery constant temperature system includes a laboratory 1, a first heat exchange system, a second heat exchange system, a third heat exchange system, a first heat exchange shell 17, an air supply pipe 12, an air outlet pipe 13, a water supply tank 6, a first water exchange tank 71, and a second water exchange tank 72. The first heat exchange system is connected to the second heat exchange system, and the second heat exchange system is connected to the third heat exchange system. A constant temperature chamber 11 is provided in the laboratory 1, the first heat exchange shell 17 is connected to the air supply pipe 12, the air supply pipe 12 is connected to the constant temperature chamber 11, a first heater 121 is provided in the air supply pipe 12, the constant temperature chamber 11 is connected to the air outlet pipe 13, the air outlet pipe 13 is connected to a liquid-gas separator 5, the drain port of the liquid-gas separator 5 is connected to the water supply tank 6, the water supply tank 6 is connected to a second air inlet pipe 15, and the second air inlet pipe 15 is connected to the constant temperature chamber 11; a plurality of storage racks 111 are provided in the constant temperature chamber 11.

[0020] In this embodiment, the first heat exchange system also includes a first compression pump 21, a first condenser 22, a first throttle valve 23, and a first evaporator 24. The first compression pump 21 is connected to the first condenser 22, the first condenser 22 is connected to the first throttle valve 23, the first throttle valve 23 is connected to the first evaporator 24, the first evaporator 24 is connected to the first compression pump 21, and the first condenser 22 is arranged in the first heat exchange shell 17.

[0021] In this embodiment, the second heat exchange system includes a second condenser 32, a second compression pump 31, a second throttle valve 33, and a second evaporator. The second compression pump 31 is connected to the second condenser 32, the second condenser 32 is connected to the second throttle valve 33, the first throttle valve 23 is connected to the second evaporator, and the second evaporator is connected to the second compression pump 31. The first evaporator 24 and the second condenser 32 are respectively arranged in the first heat exchange water tank 71.

[0022] In this embodiment, the third heat exchange system includes a third condenser 42, a third compression pump 41, a third throttle valve 43, and a third evaporator 44. The third compression pump 41 is connected to the third condenser 42, the third condenser 42 is connected to the third throttle valve 43, the third throttle valve 43 is connected to the third evaporator 44, and the third evaporator 44 is connected to the third compression pump 41. The second evaporator and the third condenser 42 are respectively arranged in the second heat exchange water tank 72.

[0023] In this embodiment, the first heat exchange shell 17 is connected to the first air inlet pipe 14 ; and the first air inlet pipe 14 and the second air inlet pipe 15 are both provided with a blower 16 .

[0024] In this embodiment, a second heater 61 is provided in the water supply tank 6 and a water inlet pipe 62 is connected to the water supply tank 6 .

[0025] In this embodiment, the specific constant temperature process is as follows: the experimental sample to be constant temperature is placed on the storage rack 111 of the constant temperature chamber 11, and the constant temperature air is sucked to the outside through the air outlet duct 13, wherein the air in the constant temperature chamber 11 absorbs heat through the third evaporator 44 in the air outlet duct 13, so that the low temperature and low pressure refrigerant in the third evaporator 44 is heated, and then the first heat exchange system, the second heat exchange system, and the third heat exchange system are respectively started, the low temperature and low pressure refrigerant in the third evaporator 44 is heated and converted into high temperature and low pressure refrigerant, and then transported to the third compression pump 41, the third compression pump 41 converts the high temperature and low pressure refrigerant into high temperature and high pressure refrigerant, and transports the high temperature and high pressure refrigerant to the third condenser 42, the high temperature and high pressure refrigerant in the third condenser 42 releases heat to the water in the second water exchange tank 72 and is converted into low temperature and high pressure refrigerant, so that the water in the second water exchange tank 72 is heated, and the low temperature and high pressure refrigerant is transported to the third throttle valve 43 and converted into low temperature and low pressure refrigerant, and the low temperature and low pressure refrigerant is transported to the third evaporator 44;

[0026] The second evaporator 34 absorbs heat in the second water exchange tank 72 to heat up the low-temperature, low-pressure refrigerant in the second evaporator 34, converting it into a high-temperature, low-pressure refrigerant, which is then delivered to the second compression pump 31. The second compression pump 31 converts the high-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant, which is then delivered to the second condenser 32. The high-temperature, high-pressure refrigerant in the second condenser 32 releases heat to the water in the first water exchange tank 71 and is converted into a low-temperature, high-pressure refrigerant, thereby heating the water in the first water exchange tank 71. The low-temperature, high-pressure refrigerant is then delivered to the second throttle valve 33 and converted into a low-temperature, low-pressure refrigerant, which is then delivered to the second evaporator 34.

[0027] The first evaporator 24 absorbs heat in the first heat exchange water tank 71 to heat up the low-temperature, low-pressure refrigerant in the first evaporator 24 and convert it into a high-temperature, low-pressure refrigerant. The refrigerant is then delivered to the first compression pump 21. The first compression pump 21 converts the high-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant, which is then delivered to the first condenser 22. The high-temperature, high-pressure refrigerant in the first condenser 22 releases heat into the first heat exchange shell 17 and is converted into a low-temperature, high-pressure refrigerant. The low-temperature, high-pressure refrigerant is then delivered to the first throttle valve 23 and converted into a low-temperature, low-pressure refrigerant. The low-temperature, low-pressure refrigerant is then delivered to the first evaporator 24.

[0028] The blower 16 of the first air inlet duct 14 is started to draw outside air into the first heat exchange shell 17. The air absorbs heat in the first heat exchange shell 17 and then enters the air supply duct 12. The air is then heated for a second time by the first heater 121 to reach the set temperature. The air is then sent to the constant temperature chamber 11 for constant temperature and waste heat utilization.

[0029] When the humidity in the constant temperature chamber 11 needs to be maintained and water needs to be replenished, the blower 16 and the second heater 61 of the second air inlet pipe 15 are started respectively, the second heater 61 heats the water in the water replenishment tank 6 to form water vapor, and the blower 16 blows the water vapor into the constant temperature chamber 11; among them, when the air in the constant temperature chamber 11 is discharged, it will first enter the liquid-gas separator 5, and the liquid and gas will be separated by the liquid-gas separator 5. The liquid will enter the water replenishment tank 6 for reuse, and the water inlet pipe 62 will also replenish water to the water replenishment tank 6.

[0030] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art may, without departing from the scope of the present invention, utilize the technical content disclosed above to make further possible variations and modifications to the present invention, or to modify the present invention into equivalent embodiments with equivalent variations. Therefore, any equivalent variations made in accordance with the principles of the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A laboratory waste heat recovery constant temperature system, comprising a laboratory (1), a first heat exchange system, a second heat exchange system, a third heat exchange system, a first heat exchange shell (17), an air supply pipe (12), an air outlet pipe (13), and a water supply tank (6), characterized in that: The first heat exchange system is connected to the second heat exchange system, the second heat exchange system is connected to the third heat exchange system, a constant temperature chamber (11) is provided in the laboratory (1), the first heat exchange shell (17) is connected to the air supply pipe (12), the air supply pipe (12) is connected to the constant temperature chamber (11), a first heater (121) is provided in the air supply pipe (12), the constant temperature chamber (11) is connected to the air outlet pipe (13), the air outlet pipe (13) is connected to the liquid-gas separator (5), the liquid discharge port of the liquid-gas separator (5) is connected to the water supply tank (6), the water supply tank (6) is connected to the second air inlet pipe (15), and the second air inlet pipe (15) is connected to the constant temperature chamber (11); The first heat exchange system includes a first condenser (22), which is arranged in a first heat exchange shell (17); the third heat exchange system includes a third evaporator (44), which is arranged in a liquid-gas separator (5).

2. A laboratory waste heat recovery constant temperature system according to claim 1, characterized in that: A plurality of storage racks (111) are provided in the constant temperature room (11).

3. The laboratory waste heat recovery constant temperature system according to claim 1, characterized in that: The first heat exchange system further comprises a first compression pump (21), a first throttle valve (23), and a first evaporator (24); the first compression pump (21) is connected to the first condenser (22); the first condenser (22) is connected to the first throttle valve (23); the first throttle valve (23) is connected to the first evaporator (24); and the first evaporator (24) is connected to the first compression pump (21).

4. A laboratory waste heat recovery constant temperature system according to claim 3, characterized in that: The heat exchange system further comprises a first heat exchange tank (71), wherein the second heat exchange system comprises a second condenser (32), a second compression pump (31), a second throttle valve (33), and a second evaporator, wherein the second compression pump (31) is connected to the second condenser (32), the second condenser (32) is connected to the second throttle valve (33), the first throttle valve (23) is connected to the second evaporator, the second evaporator is connected to the second compression pump (31), and the first evaporator (24) and the second condenser (32) are respectively arranged in the first heat exchange tank (71).

5. A laboratory waste heat recovery constant temperature system according to claim 4, characterized in that: The heat exchanger further comprises a second heat exchange tank (72), wherein the third heat exchange system comprises a third condenser (42), a third compression pump (41), and a third throttle valve (43), wherein the third compression pump (41) is connected to the third condenser (42), wherein the third condenser (42) is connected to the third throttle valve (43), wherein the third throttle valve (43) is connected to the third evaporator (44), wherein the third evaporator (44) is connected to the third compression pump (41), and wherein the second evaporator and the third condenser (42) are respectively arranged in the second heat exchange tank (72).

6. The laboratory waste heat recovery constant temperature system according to claim 1, characterized in that: The first heat exchange shell (17) is connected to a first air inlet pipe (14).

7. A laboratory waste heat recovery constant temperature system according to claim 6, characterized in that: A blower (16) is provided on both the first air inlet pipe (14) and the second air inlet pipe (15).

8. The laboratory waste heat recovery constant temperature system according to claim 1, characterized in that: A second heater (61) is provided in the water supply tank (6).

9. The laboratory waste heat recovery constant temperature system according to claim 1, characterized in that: The water replenishment tank (6) is connected to a water inlet pipe (62).

Images