Heat recovery evaporative condensing chiller

Abstract

The utility model relates to the technical field of chillers, and discloses a heat recovery type evaporative condensing chiller, including a dry evaporator, a partial heat recovery device fixedly installed on the dry evaporator, and the partial heat recovery device includes a heat collecting box and a collecting box; the heat collecting box and the collecting box are both fixedly connected to the dry evaporator, and a connecting pipe is fixedly arranged between the heat collecting box and the collecting box; the connecting pipe runs through the heat collecting box and is connected with the collecting box; a heat recovery mechanism is installed in the heat collecting box, and a liquid level gauge is fixedly arranged in the collecting box; a liquid reservoir is fixedly installed on the dry evaporator, and the liquid reservoir is connected with the collecting box through a conveying pipe; an electromagnetic valve is fixedly installed in the conveying pipe, and a controller is installed on the dry evaporator, and the liquid level gauge and the electromagnetic valve are both electrically connected to the controller. The utility model can timely convey the liquid refrigerant in the partial heat recovery device to the liquid reservoir, and while ensuring the use effect, there is no need to raise the partial heat recovery device, thereby ensuring safety and stability, and improving the utilization rate of the partial heat recovery device.

Description

Technical Field

[0001] The utility model relates to the technical field of water chillers, in particular to a heat recovery evaporative condensing water chiller. Background Art

[0002] With the increasing awareness of environmental protection and energy conservation, refrigeration systems are being used more and more widely. In addition to meeting refrigeration needs, they can also use waste heat for heat recovery and save energy.

[0003] The heat recovery evaporative condensing chiller described in the publication number CN216557788U includes a compressor, an evaporative condenser and a heat collecting box, wherein an air pipe for conveying high-temperature and high-pressure gas is connected between the compressor and the evaporative condenser, a heat exchange box is fixedly installed at the bottom of the heat collecting box, the air pipe passes through the heat exchange box, a circulating water pipe is arranged in the heat exchange box, the circulating water pipe is spirally wound around the air pipe, a water pump is installed on one side of the heat collecting box, the water inlet of the water pump is connected to the heat collecting box through a water outlet pipe, the water outlet of the water pump is connected to a water inlet pipe, the water inlet pipe is connected to one end of the circulating water pipe, and the other end of the circulating water pipe is connected to the heat collecting box through a water pipe.

[0004] Based on the above technical features, the problem that arises is: in the prior art, the evaporative cooler is placed outdoors, and some heat recovery devices are higher than the evaporative cooler air inlet pipe. If there is no platform of suitable height, a steel structure bracket needs to be installed. The height of the evaporative cooler is about 3 to 5 meters. At this height, stability and safety must be guaranteed, and sufficient installation and maintenance space must be reserved. The actual utilization rate of some heat recovery devices is low.

[0005] Therefore, it is necessary to solve the above problems through heat recovery evaporative condensing chillers. Utility Model Content

[0006] The purpose of the utility model is to provide a heat recovery type evaporative condensing chiller to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat recovery type evaporative condensing chiller, including a dry evaporator, on which a partial heat recovery device is fixedly installed, the partial heat recovery device including a heat collecting box and a collecting box; the heat collecting box and the collecting box are both fixedly connected to the dry evaporator, and a connecting pipe is fixedly arranged between the heat collecting box and the collecting box; the connecting pipe runs through the heat collecting box and is connected with the collecting box; a heat recovery mechanism is installed in the heat collecting box, and a liquid level gauge is fixedly arranged in the collecting box; a liquid reservoir is fixedly installed on the dry evaporator, and the liquid reservoir is connected with the collecting box through a delivery pipe; a solenoid valve is fixedly installed in the delivery pipe, a controller is installed on the dry evaporator, and the liquid level gauge and the solenoid valve are both electrically connected to the controller.

[0008] Preferably, the heat recovery mechanism includes a circulating water pipe and a water tank; the water tank and the heat collecting tank are integrally formed, and the liquid outlet pipe and the liquid inlet pipe are fixedly connected on the water tank; the circulating water pipe is spirally wound on the connecting pipe; one pipe opening of the circulating water pipe is fixedly connected to the liquid outlet pipe, and a water pump is arranged between the other pipe opening of the liquid outlet pipe and the liquid inlet pipe; the water pump is installed on the water tank, the water inlet of the water pump is fixedly connected to the liquid inlet pipe, and the water outlet of the water pump is fixedly connected to the circulating water pipe.

[0009] Preferably, a heat insulation board is fixedly installed in the water tank, and a plurality of through holes arranged in a matrix are drilled on the heat insulation board; the heat insulation board divides the inside of the water tank into a hot water area and a cold water area, the liquid inlet pipe is connected to the cold water area, and the liquid outlet pipe is connected to the hot water area.

[0010] Preferably, the filter screen is detachably installed at the pipe mouth of the liquid inlet pipe located in the cold water zone through a disassembly component, and the disassembly component includes a sliding plate and a clamping block; the sliding plate is in limited sliding cooperation with the water tank, and the clamping block is fixedly arranged on the sliding plate; the filter screen is clamped with the clamping block.

[0011] Preferably, a fan is installed in the thermal collector box, and a driving member is installed in the circulating water pipe, and the output end of the driving member passes through the circulating water pipe and is drivingly connected to the fan; the driving member includes a turbine and a rotating rod as the output end; a cross bracket is fixedly arranged in the circulating water pipe, and the rotating rod is rotatably arranged on the cross bracket; the turbine is fixedly sleeved on the rotating rod and cooperates with the water flow transmission in the circulating water pipe; the rotating rod passes through the circulating water pipe and is sealingly and rotatably connected to the circulating water pipe; the fan is fixedly connected to the rotating rod.

[0012] Preferably, a compressor and an oil separator are fixedly mounted on the dry evaporator, the dry evaporator is connected to the compressor via a pipeline, the compressor is connected to the oil separator via a pipeline, and the oil separator is connected to a connecting pipe on the heat collecting box.

[0013] Preferably, an evaporative cooler is fixedly installed on the dry evaporator; the collecting box is connected to the evaporative cooler through a pipeline, the evaporative cooler is connected to a liquid reservoir through a pipeline, and the liquid reservoir is connected to the dry evaporator through a pipeline.

[0014] Technical effects and advantages of the utility model:

[0015] First, the utility model adds a pipeline between the partial heat recovery device and the liquid storage device, and installs a solenoid valve on the pipeline; at the same time, a liquid level gauge is installed on the partial heat recovery device, and the detection result of the liquid level gauge is transmitted to the controller, and the controller controls the opening and closing of the solenoid valve, thereby the liquid refrigerant in the partial heat recovery device can be transported to the liquid storage device in time, ensuring the use effect while not having to elevate the partial heat recovery device, ensuring safety and stability, and improving the utilization rate of the partial heat recovery device.

[0016] Second, the utility model adds fan blades in the heat collecting box of a partial heat recovery device, and the fan blades are driven by a driving member, and the driving member is transmitted by the water flow in the circulating water pipe, thereby accelerating the air flow in the heat collecting box and improving the heat absorption efficiency of the circulating water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the heat collector box of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0020] Figure 4 This is a schematic diagram of the interior of the collection box of the utility model.

[0021] In the figure: 1. dry evaporator; 2. compressor; 3. connecting pipe; 4. oil separator; 5. collector box; 6. insulation board; 7. circulating water pipe; 8. water pump; 9. turbine; 10. rotating rod; 11. fan; 12. filter; 13. sliding plate; 14. block; 15. liquid outlet pipe; 16. collecting box; 17. liquid level gauge; 18. delivery pipe; 19. solenoid valve; 20. evaporative cooling; 21. liquid storage tank; 22. liquid inlet pipe. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figures 1 to 4 The heat recovery type evaporative condensing chiller shown includes a dry evaporator 1. A compressor 2, an oil separator 4, a partial heat recovery device, an evaporative cooler 20 and a liquid storage device 21 are bolted to the dry evaporator 1. The dry evaporator 1 is connected to the compressor 2 through a pipeline to transmit low-temperature and low-pressure refrigerant vapor to the compressor 2. The compressor 2 is connected to the oil separator 4 through a pipeline to transmit high-temperature and high-pressure refrigerant vapor containing oil to the oil separator 4. The oil separator 4 is used to produce deoiled, high-temperature and high-pressure refrigerant vapor.

[0024] The partial heat recovery device includes a heat collecting box 5 and a collecting box 16, both of which are fixedly connected to the dry evaporator 1. The collecting box 16 is fixedly connected to the connecting pipe 3, which passes through the heat collecting box 5 and is fixedly connected to the heat collecting box 5. The oil separator 4 is connected to the pipe opening of the connecting pipe 3 away from the collecting box 16, and is used to transport the deoiled, high-temperature and high-pressure refrigerant vapor to the connecting pipe 3.

[0025] A heat recovery mechanism is installed in the collector tank 5, and the heat recovery mechanism is used to absorb the heat emitted by the deoiled, high-temperature and high-pressure refrigerant vapor. The heat recovery mechanism includes a circulating water pipe 7 and a water tank. The water tank is integrally formed with the collector tank 5 and is located above the connecting pipe 3. A heat insulation board 6 is welded and fixed in the water tank, and the heat insulation board 6 divides the inside of the water tank into a hot water area and a cold water area. A hot water pipe and a cold water pipe are fixedly connected on the water tank. The hot water pipe is connected to the hot water area and is used to flow hot water out of the water tank. The cold water pipe is connected to the cold water area and is used to add cold water to the water tank.

[0026] A plurality of through holes arranged in a matrix are drilled on the heat insulation board 6 to slow down the heat exchange rate between the hot water in the hot water area and the cold water in the cold water area.

[0027] The water tank is fixedly connected with a liquid inlet pipe 22 and a liquid outlet pipe 15. The liquid inlet pipe 22 is connected to the cold water area and is used to flow cold water out of the water tank. The water pump 8 is bolted to the water tank, and the water inlet of the water pump 8 is fixedly connected to the liquid inlet pipe 22 to speed up the outflow of cold water in the water tank. The liquid outlet pipe 15 is connected to the hot water area and is used to input hot water into the water tank. The circulating water pipe 7 is spirally wound on the pipe body of the connecting pipe 3 located in the heat collecting tank 5 to facilitate the absorption of heat. One of the pipe openings of the circulating water pipe 7 is fixedly connected to the water outlet of the water pump 8, and the other pipe opening of the circulating water pipe 7 is fixedly connected to the liquid outlet pipe 15. It is used to form a liquid flow path.

[0028] The liquid inlet pipe 22 is located at the pipe mouth of the cold water area and can be detachably assembled with the filter screen 12. Two brackets are welded and fixed on the inner wall of the bottom of the water tank. A bayonet is cut on the top of each of the two brackets, and the filter screen 12 is inserted into the two bayonet. The disassembly and assembly parts are assembled in the water tank, and the disassembly and assembly parts are transmission-connected with the filter screen 12 for disassembly and assembly of the filter screen 12.

[0029] The disassembly and assembly parts include a sliding plate 13 and a clamping block 14. The sliding plate 13 is limited and slidably matched with the water tank and slides out of the water tank. The clamping block 14 is welded and fixed on the sliding plate 13, and the filter 12 is clamped with the clamping block 14. The clamping method is as follows: a T-shaped clamping groove is provided on the clamping block 14, and a T-shaped limit block matching the T-shaped clamping groove is fixed on the filter 12. The T-shaped clamping groove passes through the clamping block 14, and the T-shaped limit block is limited and slidably matched with the T-shaped clamping groove.

[0030] A fan 11 is rotatably mounted in the heat collecting box 5, and the fan 11 is located below the water tank. A driving member is mounted in the circulating water pipe 7, and the output shaft of the driving member passes through the circulating water pipe 7 and is in transmission connection with the fan 11. The fan 11 is used to drive the fan 11 to rotate, and the fan 11 is used to accelerate the air flow in the heat collecting box 5 and increase the heat absorption rate.

[0031] The driving part includes a turbine 9 and a rotating rod 10. A cross bracket is welded and fixed in the circulating water pipe 7, and the rotating rod 10 is rotatably connected to the cross center of the cross bracket. The turbine 9 is fixedly sleeved on the rotating rod 10 and cooperates with the water flow transmission in the circulating water pipe 7 to drive the turbine 9 to rotate. The rotating rod 10 passes through the circulating water pipe 7 and is sealed and rotatably connected to the circulating water pipe 7. The fan 11 is coaxially fixedly connected to the rotating rod 10.

[0032] The collecting box 16 is connected to the evaporative cooling 20 through a pipeline, and is used to transport the low-temperature and low-pressure refrigerant vapor generated by a part of the heat recovery device to the evaporative cooling 20. The evaporative cooling 20 is connected to the liquid storage 21 through a pipeline, and is used to transport the low-temperature liquid refrigerant to the liquid storage 21. The liquid storage 21 is connected to the dry evaporator 1 through a pipeline, and is used to return the low-temperature liquid refrigerant to the dry evaporator 1, thereby forming a refrigeration cycle.

[0033] A liquid level gauge 17 is fixedly installed in the collecting box 16, and the collecting box 16 is used to receive the liquid refrigerant generated in the connecting pipe 3. The liquid level gauge 17 is used to detect the liquid level of the liquid refrigerant. The collecting box 16 is fixedly connected to the delivery pipe 18, and the delivery pipe 18 is connected to the liquid accumulator 21, and is used to deliver the liquid refrigerant in the collecting box 16 to the liquid accumulator 21.

[0034] A solenoid valve 19 is fixedly installed in the delivery pipe 18 to control the opening and closing of the delivery pipe 18 .

[0035] A controller is fixedly mounted on the dry evaporator 1, and the controller is a microcomputer system. The liquid level meter 17 and the solenoid valve 19 are both electrically connected to the controller.

[0036] Working principle: When in use, the dry evaporator 1 generates low-temperature and low-pressure refrigerant vapor, which is transported to the compressor 2 through a pipeline. After being compressed by the compressor 2, the low-temperature and low-pressure refrigerant vapor is converted into high-temperature and high-pressure refrigerant vapor. The high-temperature and high-pressure refrigerant vapor is transported to the oil separator 4 through a pipeline, and the oil separator 4 removes the oil and gas in the high-temperature and high-pressure refrigerant vapor, thereby generating oil-free, high-temperature and high-pressure refrigerant vapor.

[0037] After that, the oil-free, high-temperature, high-pressure refrigerant vapor flows into the connecting pipe 3. Prior to this, the water pump 8 is started, and the water pump 8 pumps the cold water in the cold water area of ​​the water tank into the circulating water pipe 7 through the liquid inlet pipe 22. When the oil-free, high-temperature, high-pressure refrigerant vapor in the connecting pipe 3 flows through the heat collecting tank 5, the cold water in the circulating water pipe 7 absorbs the heat generated by the oil-free, high-temperature, high-pressure refrigerant vapor and converts the oil-free, high-temperature, high-pressure refrigerant vapor into low-temperature refrigerant vapor. At the same time, the cold water in the circulating water pipe 7 becomes hot water after absorbing heat, and the hot water flows into the hot water area of ​​the water tank through the liquid outlet pipe 15.

[0038] Then the low-temperature refrigerant vapor flows into the collecting box 16 through the connecting pipe 3. The low-temperature refrigerant vapor flowing into the collecting box 16 flows into the evaporative cooling 20 through the pipeline, and the evaporative cooling 20 converts the low-temperature refrigerant vapor into a low-temperature liquid refrigerant, and the low-temperature liquid refrigerant flows into the liquid storage tank 21 through the pipeline.

[0039] Finally, the low-temperature liquid refrigerant in the liquid storage tank 21 flows into the dry evaporator 1 again through the pipeline, thereby forming a refrigeration cycle.

[0040] When the water pump 8 pumps cold water into the circulating water pipe 7, the water flow in the circulating water pipe 7 impacts the turbine 9, the turbine 9 rotates and drives the rotating rod 10 to rotate, and the rotating rod 10 drives the fan 11 to rotate. The fan 11 pushes the air in the heat collecting box 5 to flow, so that the contact area between the circulating water pipe 7 and the hot air is increased, thereby accelerating the heat absorption rate.

[0041] In the process of the circulating water pipe 7 absorbing heat, there is a certain probability that liquid refrigerant will be generated in the connecting pipe 3. Therefore, the connecting pipe 3 can be designed to be inclined to the collecting box 16, so that the liquid refrigerant in the connecting pipe 3 can flow into the collecting box 16. When the liquid level meter 17 detects the liquid refrigerant flowing into the collecting box 16, it will transmit the detection result to the controller, and the controller controls the solenoid valve 19 to open the delivery pipe 18. After that, the liquid refrigerant in the collecting box 16 flows into the liquid storage tank 21 through the delivery pipe 18. In this way, there is no need to raise part of the heat recovery device, which improves the utilization rate.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat recovery type evaporative condensing chiller, comprising a dry evaporator (1), characterized in that: A partial heat recovery device is fixedly mounted on the dry evaporator (1), and the partial heat recovery device comprises a heat collecting box (5) and a collecting box (16); the heat collecting box (5) and the collecting box (16) are both fixedly connected to the dry evaporator (1), and a connecting pipe (3) is fixedly arranged between the heat collecting box (5) and the collecting box (16); the connecting pipe (3) passes through the heat collecting box (5) and is in communication with the collecting box (16); a heat recovery mechanism is installed in the heat collecting box (5), and a liquid level gauge (17) is fixedly arranged in the collecting box (16); a liquid reservoir (21) is fixedly mounted on the dry evaporator (1), and the liquid reservoir (21) is in communication with the collecting box (16) via a delivery pipe (18); an electromagnetic valve (19) is fixedly mounted in the delivery pipe (18), and a controller is installed on the dry evaporator (1), and the liquid level gauge (17) and the electromagnetic valve (19) are both electrically connected to the controller.

2. The heat recovery evaporative condensing chiller according to claim 1, characterized in that: The heat recovery mechanism comprises a circulating water pipe (7) and a water tank; the water tank and the heat collecting tank (5) are integrally formed, and a liquid outlet pipe (15) and a liquid inlet pipe (22) are fixedly connected on the water tank; the circulating water pipe (7) is spirally wound on the connecting pipe (3); one pipe opening of the circulating water pipe (7) is fixedly connected to the liquid outlet pipe (15), and a water pump (8) is arranged between the other pipe opening of the liquid outlet pipe (15) and the liquid inlet pipe (22); the water pump (8) is installed on the water tank, the water inlet of the water pump (8) is fixedly connected to the liquid inlet pipe (22), and the water outlet of the water pump (8) is fixedly connected to the circulating water pipe (7).

3. The heat recovery evaporative condensing chiller according to claim 2, characterized in that: A heat insulation board (6) is fixedly arranged in the water tank, and a plurality of through holes arranged in a matrix are drilled on the heat insulation board (6); the heat insulation board (6) divides the interior of the water tank into a hot water area and a cold water area, the liquid inlet pipe (22) is connected to the cold water area, and the liquid outlet pipe (15) is connected to the hot water area.

4. The heat recovery evaporative condensing chiller according to claim 2, characterized in that: The liquid inlet pipe (22) is located at the pipe mouth of the cold water zone and a filter screen (12) is detachably installed through a disassembly component, and the disassembly component includes a sliding plate (13) and a clamping block (14); the sliding plate (13) is in limited sliding cooperation with the water tank, and the clamping block (14) is fixedly arranged on the sliding plate (13); the filter screen (12) is clamped with the clamping block (14).

5. The heat recovery evaporative condensing chiller according to claim 2, characterized in that: A fan (11) is installed in the heat collecting box (5), and a driving member is installed in the circulating water pipe (7), and the output end of the driving member passes through the circulating water pipe (7) and is connected to the fan (11) in a transmission manner; the driving member comprises a turbine (9) and a rotating rod (10) as an output end; a cross bracket is fixedly arranged in the circulating water pipe (7), and the rotating rod (10) is rotatably arranged on the cross bracket; the turbine (9) is fixedly sleeved on the rotating rod (10) and cooperates with the water flow transmission in the circulating water pipe (7); the rotating rod (10) passes through the circulating water pipe (7) and is sealed and rotatably connected to the circulating water pipe (7); the fan (11) is fixedly connected to the rotating rod (10).

6. The heat recovery evaporative condensing chiller according to claim 1, characterized in that: A compressor (2) and an oil separator (4) are fixedly mounted on the dry evaporator (1); the dry evaporator (1) is connected to the compressor (2) via a pipeline; the compressor (2) is connected to the oil separator (4) via a pipeline; and the oil separator (4) is connected to a connecting pipe (3) on a heat collecting box (5).

7. The heat recovery evaporative condensing chiller according to claim 1, characterized in that: An evaporative cooler (20) is fixedly mounted on the dry evaporator (1); the collecting box (16) is connected to the evaporative cooler (20) via a pipeline; the evaporative cooler (20) is connected to a liquid storage device (21) via a pipeline; and the liquid storage device (21) is connected to the dry evaporator (1) via a pipeline.

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