CN214406544U

CN214406544U - Heat recovery and energy saving system for commercial refrigeration equipment

Info

Publication number: CN214406544U
Application number: CN202120598415.9U
Authority: CN
Inventors: 刘军
Original assignee: Hefei Lingfeng Refrigeration Engineering Co ltd
Current assignee: Hefei Lingfeng Refrigeration Engineering Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-10-15
Anticipated expiration: 2031-03-24

Abstract

The utility model discloses a commercial usage refrigeration plant heat recovery adds economizer system, including electronic expansion valve, the evaporimeter, a compressor, plate heat exchanger, the heating water tank, the cold water buffer tank, a condenser, the air-cooler unit, converter and PLC controller, electronic expansion valve's the other end and evaporimeter are connected, the one end and the air conditioning user terminal of evaporimeter are connected, the compressor is connected with evaporimeter and plate heat exchanger, plate heat exchanger's hot junction is connected with the heating water tank, be equipped with the hot water house steward on the delivery port of heating water tank, the other end of hot water house steward is equipped with a plurality of hot water branch pipes, the hot water branch pipe is connected with hot water user terminal, the heating water tank is connected with the cold water buffer tank, plate heat exchanger's gas vent is connected with the condenser, the condenser is connected with electronic expansion valve. Has the advantages that: can carry out heat recovery to refrigeration plant, heat recovery efficiency is high, can provide a large amount of hot water for peripheral facilities, and whole refrigerating system work compressor work more power saving under ideal state.

Description

Heat recovery and energy saving system for commercial refrigeration equipment

Technical Field

The utility model relates to a commercial low temperature refrigeration plant field particularly, relates to a commercial use refrigeration plant heat recovery adds energy-saving system.

Background

The invention provides a large amount of hot water for commercial refrigeration equipment, wherein a large part of the ambient environment of the equipment is the environment with hot water demand, such as food factories, markets, wholesalers, hotels and the like, and the more energy is saved, the more energy is used, such as: the temperature of 15 ℃ of a ton of water is heated to 55 ℃, the electricity consumption is about 46 degrees (data are collected on the network), but the invention only needs one 200-watt water pump to work for 5 hours to heat 1 ton of water to 55 ℃ and the highest temperature can reach more than 80 ℃, the electricity consumption is only 1 degree, meanwhile, the load of the condenser is reduced, the power consumption of the fan of the condenser is reduced through frequency conversion, and the whole refrigerating system works under the ideal state, and the compressor works more electricity-saving. The more hot water is used, more cold water is supplemented to recover heat for the system, and the generated hot water has almost zero energy consumption. The invention has low cost increase, can recover the cost in a short time, has high popularization performance, and solves the problems of poor waste heat recovery efficiency and difficult large-area popularization.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

To the problem in the correlation technique, the utility model provides a commercial use refrigeration plant heat recovery adds energy-conserving system to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

a heat recovery and energy saving system for a commercial refrigeration device comprises an electronic expansion valve, an evaporator, a compressor, a plate heat exchanger, a heating water tank, a cold water buffer tank, a condenser, a cold air unit, a frequency converter and a PLC (programmable logic controller), wherein the electronic expansion valve, the evaporator, the compressor, the plate heat exchanger, the heating water tank, the cold water buffer tank, the condenser, the cold air unit and the frequency converter are respectively and electrically connected with the PLC, one end of the electronic expansion valve is connected with a refrigerant supply end, the other end of the electronic expansion valve is connected with the evaporator through a refrigerant pipeline, one end of the evaporator is connected with a cold air using terminal through a refrigeration pipeline, the compressor is connected with the evaporator and the plate heat exchanger, and the hot end of the plate heat exchanger is connected with the heating water tank, be provided with the hot water house steward on heating water tank's the delivery port, the other end of hot water house steward is provided with a plurality of hot water branch pipes, the other end and the hot water user terminal of hot water branch pipe are connected, heating water tank's water inlet pass through the inlet channel with the cold water buffer tank is connected, the one end and the running water supply end of cold water buffer tank are connected, plate heat exchanger's gas vent pass through the back flow with the condenser is connected, the back flow alternate in the cold water buffer tank, the condenser with electronic expansion valve connects, the air-cooler unit is located one side of condenser, the air-cooler unit with the converter electricity is connected.

Furthermore, a pressure relief pipe is arranged at the top end of one side of the heating water tank, and a pressure relief control valve is arranged on the pressure relief pipe.

Further, the top of the inside one side of heating water tank is provided with pressure sensor, the inside bottom that is close to of heating water tank pressure sensor one side is provided with temperature sensor, the inside one side of keeping away from of heating water tank pressure sensor is provided with level sensor.

Furthermore, a plurality of heat-conducting plates connected with the plate heat exchanger are arranged in the heating water tank, and the heat-conducting plates are made of aluminum.

Furthermore, an electromagnetic valve is arranged on the hot water main pipe.

Furthermore, a water pump and a flow control valve are sequentially arranged on the water inlet pipeline respectively.

The utility model has the advantages that: through setting up by electronic expansion valve, the evaporimeter, the compressor, plate heat exchanger, the heating water tank, the cold water buffer tank, a condenser, the air-cooling unit, the converter, the PLC controller, the refrigerant supply end, the refrigerant pipeline, the refrigeration pipeline, air conditioning user terminal, the hot water house steward, the hot water branch pipe, the hot water user terminal, the inlet channel, the running water supply end, the commercial use refrigeration plant heat recovery that the back flow constitutes adds energy-conserving system, thereby can carry out heat recovery to refrigeration plant, heat recovery efficiency is high, can provide a large amount of hot water for peripheral facility, whole refrigeration system work compressor work under ideal state more power-saving.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a connection structure of a heat recovery and energy saving system of a refrigeration equipment for commercial use according to an embodiment of the present invention.

In the figure:

1. an electronic expansion valve; 2. an evaporator; 3. a compressor; 4. a plate heat exchanger; 5. heating the water tank; 6. a cold water buffer tank; 7. a condenser; 8. a cold air unit; 9. a frequency converter; 10. a PLC controller; 11. a refrigerant supply end; 12. a refrigerant conduit; 13. a refrigeration pipeline; 14. a cold air using terminal; 15. a hot water main; 16. a hot water branch pipe; 17. a hot water use terminal; 18. a water inlet pipe; 19. a tap water supply end; 20. a return pipe; 21. a pressure relief pipe; 22. a pressure relief control valve; 23. a pressure sensor; 24. a temperature sensor; 25. a liquid level sensor; 26. a heat conducting plate; 27. an electromagnetic valve; 28. a water pump; 29. a flow control valve.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a commercial use refrigeration plant heat recovery adds energy-conserving system.

The first embodiment is as follows:

as shown in fig. 1, the heat recovery and energy saving system for refrigeration equipment for commercial use according to the embodiment of the present invention comprises an electronic expansion valve 1, an evaporator 2, a compressor 3, a plate heat exchanger 4, a heating water tank 5, a cold water buffer tank 6, a condenser 7, an air cooler unit 8, a frequency converter 9 and a PLC controller 10, wherein the electronic expansion valve 1, the evaporator 2, the compressor 3, the plate heat exchanger 4, the heating water tank 5, the cold water buffer tank 6, the condenser 7, the air cooler unit 8 and the frequency converter 9 are respectively electrically connected to the PLC controller 10, one end of the electronic expansion valve 1 is connected to a refrigerant supply end 11, the other end of the electronic expansion valve 1 is connected to the evaporator 2 through a refrigerant pipe 12, one end of the evaporator 2 is connected to a cold air using terminal 14 through a refrigeration pipe 13, the compressor 3 is connected with the evaporator 2 and the plate heat exchanger 4, the hot end of the plate heat exchanger 4 is connected with the heating water tank 5, a hot water main pipe 15 is arranged on a water outlet of the heating water tank 5, a plurality of hot water branch pipes 16 are arranged at the other end of the hot water main pipe 15, the other end of the hot water branch pipe 16 is connected with a hot water using terminal 17, the water inlet of the heating water tank 5 is connected with the cold water buffer tank 6 through a water inlet pipeline 18, one end of the cold water buffer tank 6 is connected with a tap water supply end 19, an exhaust port of the plate heat exchanger 4 is connected with the condenser 7 through a return pipe 20, the return pipe 20 is inserted into the cold water buffer tank 6, the condenser 7 is connected with the electronic expansion valve 1, the cold air unit 8 is located on one side of the condenser 7, and the cold air unit 8 is electrically connected with the frequency converter 9.

By means of the technical scheme, the commercial refrigeration equipment heat recovery and energy saving system is composed of the electronic expansion valve 1, the evaporator 2, the compressor 3, the plate type heat exchanger 4, the heating water tank 5, the cold water buffer tank 6, the condenser 7, the cold air unit 8, the frequency converter 9, the PLC 10, the refrigerant supply end 11, the refrigerant pipeline 12, the refrigeration pipeline 13, the cold air using terminal 14, the hot water main pipe 15, the hot water branch pipe 16, the hot water using terminal 17, the water inlet pipeline 18, the tap water supply end 19 and the return pipe 20, so that heat recovery can be carried out on refrigeration equipment, the heat recovery efficiency is high, a large amount of hot water can be provided for peripheral facilities, and the whole refrigeration system works on the compressor in an ideal state and saves electricity.

Example two:

as shown in fig. 1, the top of heating water tank 5 one side is provided with pressure relief pipe 21, be provided with pressure relief control valve 22 on the pressure relief pipe 21, the top of the inside one side of heating water tank 5 is provided with pressure sensor 23, the inside of heating water tank 5 is close to the bottom of pressure sensor 23 one side is provided with temperature sensor 24, the inside of heating water tank 5 is kept away from one side of pressure sensor 23 is provided with level sensor 25, the inside of heating water tank 5 be provided with a plurality of with heat-conducting plate 26 that plate heat exchanger 4 is connected, heat-conducting plate 26 is the aluminium material, be provided with solenoid valve 27 on the hot water main 15, water pump 28 and flow control valve 29 have set gradually respectively on the inlet channel 18.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, when the electronic expansion valve is used, the electronic expansion valve 1 works to provide refrigerant for the evaporator 2, the evaporator 2 works to absorb heat, the compressor 3 compresses and applies work to generate high-pressure high-temperature gas, the high-pressure high-temperature gas enters the plate heat exchanger 4 to exchange heat, water in the heating water tank 5 is heated through heat, hot water in the heating water tank 5 is provided for a hot water using terminal 17 through the hot water main pipe 15 and the hot water branch pipe 16 to be used, in addition, the water temperature, the water pressure and the water quantity in the heating water tank 5 can be monitored in real time through the pressure sensor 23, the temperature sensor 24 and the liquid level sensor 25, the high-pressure high-temperature gas after heat exchange enters the condenser 7 through the return pipe 20 and then enters the electronic expansion valve 1 to realize circulation, the tap water supply end 19 supplies tap water, the tap water enters the cold water tank 6, and therefore the return pipe 20 inside the cold water buffer tank 6 can be pre-cooled, thereby can utilize cold water to realize gaseous condensation, can carry out the frequency conversion through converter 9, realize the frequency conversion regulation to cold wind unit 8 to can reduce the power of condenser 7.

In conclusion, with the aid of the above technical scheme of the utility model, through the setting by electronic expansion valve 1, evaporimeter 2, compressor 3, plate heat exchanger 4, heating water tank 5, cold water buffer tank 6, condenser 7, cold air unit 8, converter 9, PLC controller 10, refrigerant supply end 11, refrigerant pipeline 12, refrigeration pipeline 13, air conditioning user terminal 14, hot water main 15, hot water branch pipe 16, hot water user terminal 17, inlet channel 18, running water supply end 19, the commercial use refrigeration plant heat recovery that back flow 20 constitutes adds the energy-conserving system, thereby can carry out heat recovery to refrigeration plant, heat recovery efficiency is high, can provide a large amount of hot water for peripheral facility, whole refrigeration system works compressor work under ideal state and more saves power.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The heat recovery and energy saving system for the refrigeration equipment for commercial use is characterized by comprising an electronic expansion valve (1), an evaporator (2), a compressor (3), a plate type heat exchanger (4), a heating water tank (5), a cold water buffer tank (6), a condenser (7), a cold air unit (8), a frequency converter (9) and a PLC (programmable logic controller) controller (10), wherein the electronic expansion valve (1), the evaporator (2), the compressor (3), the plate type heat exchanger (4), the heating water tank (5), the cold water buffer tank (6), the condenser (7), the cold air unit (8) and the frequency converter (9) are respectively and electrically connected with the PLC controller (10), one end of the electronic expansion valve (1) is connected with a refrigerant supply end (11), and the other end of the electronic expansion valve (1) is connected with the evaporator (2) through a refrigerant pipeline (12), one end of the evaporator (2) is connected with an air conditioning use terminal (14) through a refrigeration pipeline (13), the compressor (3) is connected with the evaporator (2) and the plate heat exchanger (4), the hot end of the plate heat exchanger (4) is connected with the heating water tank (5), a hot water main pipe (15) is arranged on a water outlet of the heating water tank (5), a plurality of hot water branch pipes (16) are arranged at the other end of the hot water main pipe (15), the other ends of the hot water branch pipes (16) are connected with a hot water use terminal (17), a water inlet of the heating water tank (5) is connected with the cold water buffer tank (6) through a water inlet pipeline (18), one end of the cold water buffer tank (6) is connected with a tap water supply end (19), and an air outlet of the plate heat exchanger (4) is connected with the condenser (7) through a return pipe (20), the return pipe (20) is inserted in the cold water buffer tank (6), the condenser (7) is connected with the electronic expansion valve (1), the cold air unit (8) is located on one side of the condenser (7), and the cold air unit (8) is electrically connected with the frequency converter (9).

2. A commercial use refrigeration equipment heat recovery and energy saving system according to claim 1, wherein the top end of the heating water tank (5) side is provided with a pressure relief pipe (21), and the pressure relief pipe (21) is provided with a pressure relief control valve (22).

3. A commercial use refrigeration equipment heat recovery and energy saving system according to claim 1, wherein the top end of one side inside the heating water tank (5) is provided with a pressure sensor (23), the bottom end of one side inside the heating water tank (5) close to the pressure sensor (23) is provided with a temperature sensor (24), and the side inside the heating water tank (5) far away from the pressure sensor (23) is provided with a liquid level sensor (25).

4. A commercial use refrigeration equipment heat recovery and energy saving system according to claim 1, wherein the heating water tank (5) is internally provided with a plurality of heat conducting plates (26) connected with the plate heat exchanger (4), and the heat conducting plates (26) are made of aluminum.

5. A commercial refrigeration heat recovery plus energy conservation system as set forth in claim 1 wherein the hot water manifold (15) is provided with a solenoid valve (27).

6. A commercial use refrigeration equipment heat recovery plus energy conservation system as claimed in claim 1 wherein said water inlet conduit (18) is provided with a water pump (28) and a flow control valve (29), respectively, in sequence.