CN215571365U - Refrigerating system and heat recovery system thereof - Google Patents
Refrigerating system and heat recovery system thereof Download PDFInfo
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- CN215571365U CN215571365U CN202120650079.8U CN202120650079U CN215571365U CN 215571365 U CN215571365 U CN 215571365U CN 202120650079 U CN202120650079 U CN 202120650079U CN 215571365 U CN215571365 U CN 215571365U
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Abstract
The utility model discloses a refrigeration system and a heat recovery system thereof, wherein the heat recovery system comprises: a heat exchanger, a water pump and a water tank; one inlet of the heat exchanger is connected with the outlet of the water pump, the other inlet of the heat exchanger is connected with a compressor of the refrigerating system, one outlet of the heat exchanger is connected with the inlet of the water tank, and the other outlet of the heat exchanger is connected with an outdoor heat exchanger of the refrigerating system; the inlet of the water pump is connected with the outlet of the water tank. The heat recovery system provided by the utility model can effectively reduce the pressure in the pipeline connecting the compression pump and the outdoor heat exchanger, so that the refrigeration system is more stable; and the temperature of the water rises after absorbing heat, so that the water can be used for other occasions needing hot water, the energy is fully utilized, and the recovery rate of the energy is improved.
Description
Technical Field
The utility model relates to the technical field of refrigeration systems, in particular to a heat recovery system. Furthermore, the utility model also relates to a refrigeration system comprising the heat recovery system.
Background
The energy consumption of the refrigerating system is large and accounts for more than 15% of the energy consumption of the whole world, the application of the refrigerating unit is more and more extensive, and in the using process, when the refrigerating system runs, a part of heat can be released, and in the prior art, the part of heat can not be utilized all the time, so that the energy waste is caused.
In summary, how to improve the energy utilization rate of the refrigeration system is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a heat recovery system, which can recover heat generated by a refrigeration system during operation, and use the heat to heat water, so as to provide hot water; in addition, the operation of the refrigeration system can be more stable.
It is another object of the present invention to provide a refrigeration system including the heat recovery system described above.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a heat recovery system comprising: a heat exchanger, a water pump and a water tank;
one inlet of the heat exchanger is connected with an outlet of the water pump, the other inlet of the heat exchanger is connected with a compressor of a refrigeration system, one outlet of the heat exchanger is connected with an inlet of the water tank, and the other outlet of the heat exchanger is connected with an outdoor heat exchanger of the refrigeration system;
and the inlet of the water pump is connected with the outlet of the water tank.
Preferably, the water tank further comprises an air-cooled heat exchanger, an inlet of the air-cooled heat exchanger is connected with one of the outlets of the heat exchangers, and an outlet of the air-cooled heat exchanger is connected with an inlet of the water tank.
Preferably, a temperature sensor for detecting the temperature of the water inside the water tank is arranged in the water tank.
Preferably, the air-cooled heat exchanger and the water pump are both connected with the controller.
Preferably, the water tank is provided with a cold water replenishing port and a hot water outlet.
Preferably, the cold water replenishing port and the hot water outlet are both provided with an electric control valve.
Preferably, a branch pipe is arranged on a pipeline connecting the heat exchanger and the compressor, and the branch pipe is connected with an outlet of the internal machine.
A refrigeration system comprising a heat recovery system as claimed in any one of the preceding claims.
In the process of using the heat recovery system provided by the utility model, the other inlet of the heat exchanger is connected with a compressor of a refrigeration system, when in refrigeration operation, the outlet of the water tank can be opened, water in the water tank is pumped out to enter the heat exchanger under the action of the water pump, and the water absorbs the heat of the high-temperature and high-pressure refrigerant flowing out of the compression pump in the heat exchanger, so that the temperature of the high-temperature and high-pressure refrigerant is reduced, the pressure in a pipeline connecting the compression pump and the outdoor heat exchanger can be effectively reduced, and the refrigeration system is more stable; and the temperature of the water rises after absorbing heat, so that the water can be used for other occasions needing hot water, the energy is fully utilized, and the recovery rate of the energy is improved.
In addition, the utility model also provides a refrigeration system comprising the heat recovery system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat recovery system provided in the present invention.
In fig. 1:
1 is compressor, 2 is outdoor heat exchanger, 3 is heat exchanger, 4 is air-cooled heat exchanger, 5 is water tank, 6 is water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the utility model is to provide a heat recovery system which can recover the heat generated by a refrigeration system in the running process, and utilize the part of heat to heat water, and can be used for providing hot water; in addition, the operation of the refrigeration system can be more stable. Another core of the present invention is to provide a refrigeration system comprising the above heat recovery system.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat recovery system provided in the present invention.
This particular embodiment provides a heat recovery system, includes: a heat exchanger 3, a water pump 6, and a water tank 5;
one inlet of the heat exchanger 3 is connected with an outlet of the water pump 6, the other inlet of the heat exchanger is connected with the compressor 1 of the refrigerating system, one outlet of the heat exchanger 3 is connected with an inlet of the water tank 5, and the other outlet of the heat exchanger is connected with the outdoor heat exchanger 2 of the refrigerating system; the inlet of the water pump 6 is connected with the outlet of the water tank 5.
As shown in fig. 1, during cooling operation, a low-temperature and low-pressure refrigerant or return air enters the compressor 1 and is compressed into high-temperature and high-pressure gas or liquid, the high-temperature and high-pressure gas or liquid flows through the heat exchanger 3 and exchanges heat with water entering the heat exchanger 3 through the water pump 6 in the heat exchanger 3, and the high-temperature and high-pressure gas or liquid after heat exchange enters the outdoor heat exchanger 2 and is further subjected to heat exchange.
It should be noted that, during the use process, whether to start the heat recovery system may be selected according to actual conditions, for example, when the temperature of the water in the water tank 5 is equal to or higher than the temperature of the gas or liquid flowing out from the compressor 1, the water pump 6 is controlled to stop operating.
In addition, when the refrigerator runs at low temperature, the difference between the indoor temperature and the outdoor temperature is not large, the outdoor heat exchanger 2 can be controlled to stop working, and heat exchange is carried out only through the heat exchanger 3.
In the process of using the heat recovery system provided by the utility model, the other inlet of the heat exchanger 3 is connected with the compressor 1 of the refrigeration system, when in refrigeration operation, the outlet of the water tank 5 can be opened, water in the water tank 5 is pumped out to enter the heat exchanger 3 under the action of the water pump 6, and in the heat exchanger 3, the water absorbs the heat of the high-temperature high-pressure refrigerant flowing out of the compression pump, so that the temperature of the high-temperature high-pressure refrigerant is reduced, the pressure in a pipeline connecting the compression pump and the outdoor heat exchanger 2 can be effectively reduced, and the refrigeration system is more stable; and the temperature of the water rises after absorbing heat, so that the water can be used for other occasions needing hot water, the energy is fully utilized, and the recovery rate of the energy is improved.
Preferably, in order to improve the heat exchange efficiency of the heat exchanger 3, the heat exchange area in the heat exchanger 3 may be increased, which is determined according to the actual situation and is not described herein again.
On the basis of the above embodiment, the water tank may further include an air-cooled heat exchanger 4, an inlet of the air-cooled heat exchanger 4 is connected to one of outlets of the heat exchangers 3, and an outlet of the air-cooled heat exchanger 4 is connected to an inlet of the water tank 5.
In the using process, when the heat dissipation efficiency needs to be improved, the air-cooled heat exchanger 4 can be opened in the heat dissipation process, water in the water tank 5 enters the air-cooled heat exchanger 4 after absorbing heat in the heat exchanger 3, heat is provided for the air-cooled heat exchanger 4, hot air is blown out of the air-cooled heat exchanger 4, and then the water flows out of the outlet of the air-cooled heat exchanger 4 and flows back to the water tank 5.
The hot air provided by the air-cooled heat exchanger 4 can be applied to occasions needing hot air according to actual requirements, so that energy is fully utilized.
When the low-temperature refrigeration operation is performed, the outdoor heat exchanger 2 does not operate, at this time, the heat exchanger 3 mainly cools the high-temperature high-pressure gas or liquid flowing out from the compressor 1, so that the high-temperature high-pressure gas or liquid performs heat exchange in the heat exchanger 3, and meanwhile, the air-cooled heat exchanger 4 can perform auxiliary heat dissipation to maintain the water temperature at a proper temperature.
Preferably, a temperature sensor for detecting the temperature of water inside the water tank 5 may be provided in the water tank 5 for detecting the temperature inside the water tank 5 in real time. The air-cooled heat exchanger 4 and the water pump 6 are connected with the controller.
When the temperature of the water in the water tank 5 reaches the preset temperature and is the same as the temperature of the high-temperature and high-pressure gas or liquid flowing out of the compressor 1, the controller can control the water pump 6 to stop working, control the cold water replenishing port of the water tank 5 to be opened to replenish water, and control the hot water outlet to be opened to allow hot water to flow out, so as to provide hot water for required equipment or environment.
The water tank 5 is provided with a hot water outlet and can be used for independently providing hot water, so that the energy is fully utilized, and the utilization rate of the energy is improved.
Preferably, a water outlet of the water tank 5 connected with the water pump 6 is arranged at the lower part of the water tank 5, and an inlet connected with the air-cooled heat exchanger 4 is arranged at the upper part of the water tank 5.
Of course, during the processes of cold water supply and hot water discharge, the water pump 6 may be controlled to operate simultaneously to maintain the temperature of the water in the water tank 5 at a suitable temperature, which is determined according to actual conditions. Alternatively, the air-cooled heat exchanger 4 may be opened to allow the hot water flowing out of the heat exchanger 3 to supply heat to the air-cooled heat exchanger 4 so that the temperature of the water in the water tank 5 can be maintained at a suitable temperature.
On the basis of the above-described embodiment, a branch pipe may be provided on a pipe connecting the heat exchanger 3 and the compressor 1, the branch pipe being connected to an outlet of the internal machine.
In the using process, the compressor 1 can be closed, so that low-temperature and low-pressure gas enters the heat exchanger 3 from the indoor unit, the water pump 6 is controlled to work at the moment, hot water is stored in the water tank 5, the heat exchange is carried out between the hot water and the low-temperature and low-pressure gas in the heat exchanger 3, the heat of the hot water is absorbed, and the temperature and the pressure of the low-temperature and low-pressure gas are increased.
In the above embodiment, during the reverse hot gas defrosting operation, the low-temperature refrigerant passes through the heat exchanger 3 and absorbs heat of hot water in the heat exchanger 3 to exchange heat with the hot water, so that the suction pressure and temperature in the pipeline are both increased, the exhaust flow and temperature can be increased, and the defrosting speed is increased.
In addition to the heat recovery system, the present invention further provides a refrigeration system including the heat recovery system disclosed in the above embodiments, and the structure of other parts of the refrigeration system refers to the prior art, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all the embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The refrigeration system and the heat recovery system thereof provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A heat recovery system, comprising: a heat exchanger (3), a water pump (6) and a water tank (5);
one inlet of the heat exchanger (3) is connected with an outlet of the water pump (6), the other inlet of the heat exchanger is connected with a compressor (1) of the refrigerating system, one outlet of the heat exchanger (3) is connected with an inlet of the water tank (5), and the other outlet of the heat exchanger is connected with an outdoor heat exchanger (2) of the refrigerating system;
the inlet of the water pump (6) is connected with the outlet of the water tank (5).
2. A heat recovery system according to claim 1, further comprising an air-cooled heat exchanger (4), an inlet of the air-cooled heat exchanger (4) being connected to one of the outlets of the heat exchangers (3), an outlet of the air-cooled heat exchanger (4) being connected to an inlet of the water tank (5).
3. A heat recovery system according to claim 2, characterized in that a temperature sensor is provided in the water tank (5) to detect the temperature of the water inside it.
4. A heat recovery system according to claim 3, further comprising a controller connected to the temperature sensor, the air-cooled heat exchanger (4) and the water pump (6) being connected to the controller.
5. A heat recovery system according to claim 3, characterized in that the water tank (5) is provided with a cold water refill opening and a hot water flow outlet.
6. A heat recovery system according to claim 5, wherein the cold water refill outlet and the hot water outflow outlet are each provided with an electrically controlled valve.
7. The heat recovery system according to any one of claims 1 to 6, wherein a branch pipe is provided on a pipe connecting the heat exchanger (3) and the compressor (1), and the branch pipe is connected to an outlet of an internal machine.
8. A refrigeration system comprising the heat recovery system of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120650079.8U CN215571365U (en) | 2021-03-30 | 2021-03-30 | Refrigerating system and heat recovery system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120650079.8U CN215571365U (en) | 2021-03-30 | 2021-03-30 | Refrigerating system and heat recovery system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215571365U true CN215571365U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120650079.8U Active CN215571365U (en) | 2021-03-30 | 2021-03-30 | Refrigerating system and heat recovery system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215571365U (en) |
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2021
- 2021-03-30 CN CN202120650079.8U patent/CN215571365U/en active Active
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