CN213931253U - Central air-conditioning water system - Google Patents
Central air-conditioning water system Download PDFInfo
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- CN213931253U CN213931253U CN202022704172.0U CN202022704172U CN213931253U CN 213931253 U CN213931253 U CN 213931253U CN 202022704172 U CN202022704172 U CN 202022704172U CN 213931253 U CN213931253 U CN 213931253U
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Abstract
The utility model relates to a central air conditioning water system, include: the evaporator, the refrigerating pump and the chilled water pipeline are sequentially connected to form a closed chilled water circulation loop, chilled water generated by the evaporator is pumped to the chilled water pipeline by the chilled water pump, and flows back to the evaporator after heat exchange is finished indoors; a connecting pipe between the freezing water pipeline and the evaporator and a connecting pipe between the compressor and the condenser are arranged in a section of cooling water pipeline, a liquid inlet of the cooling pump unit is connected with the cooling water tower, and a liquid outlet of the cooling pump unit is respectively connected with a cooling water inlet of the condenser and a liquid inlet of the cooling water pipeline; the cooling water outlet of condenser and cooling water piping's liquid outlet are connected with cooling tower's return water mouth respectively, and the heat that this scheme produced to different links in the water system all cools off through the cooling water in the cooling tower, does further preliminary treatment before the heat gets into the condenser to reduce the power requirement to the condenser, make during the multiunit operation, still can guarantee its refrigeration effect.
Description
Technical Field
The utility model relates to an air conditioner field, concretely relates to central air conditioning water system.
Background
The water system of the water-cooled central air-conditioning system comprises a cooling water system and a chilled water/hot water system (generally adopting a single pipe system, and circulating chilled water in summer and hot water in winter). The air-cooled or air-cooled heat pump type includes only a freezing/hot water system. Circulating water systems are an important part of central air conditioning systems. The central air conditioning unit mainly comprises a chilled water circulation system, a cooling water circulation system and a main unit, and is shown in fig. 1.
The chilled water circulating system comprises a freezing pump, an indoor fan, a chilled water pipeline and the like. The low-temperature chilled water flowing out of the main machine evaporator is pressurized by the freezing pump and sent into a chilled water pipeline (water outlet), enters the room for heat exchange, takes away heat in the room, and finally returns to the main machine evaporator (water return). The indoor fan is used for blowing air through the freezing water pipeline, reducing the air temperature and accelerating indoor heat exchange.
The cooling water circulation part consists of a cooling pump, a cooling water pipeline, a cooling water tower and the like. The refrigerating water circulation system can carry out indoor heat exchange and bring away a large amount of indoor heat energy. The heat energy is transferred to the cooling water through the refrigerant in the host machine, so that the temperature of the cooling water is increased. The cooling pump presses the heated cooling water into a cooling water tower (water outlet) to exchange heat with the atmosphere, and the cooling water is returned to a main machine condenser (backwater) after the temperature is reduced.
The main machine part consists of a compressor, an evaporator, a condenser, a refrigerant and the like, wherein a low-pressure gaseous refrigerant is pressurized by the compressor to enter the condenser and is gradually condensed into a high-pressure liquid. During the condensation process, the refrigerant releases a large amount of heat energy, and the heat energy is absorbed by cooling water in the condenser, sent to an outdoor cooling tower and finally released to the atmosphere. Then the high pressure liquid refrigerant in the condenser is gasified due to the sudden change of pressure when flowing through the throttling pressure reducing device in front of the evaporator, and a gas-liquid mixture is formed and enters the evaporator. The refrigerant is continuously gasified in the evaporator, and simultaneously absorbs the heat in the chilled water to enable the chilled water to reach a lower temperature. Finally, the refrigerant gasified in the evaporator is changed into low-pressure gas, and enters the compressor again, and the process is repeated in a circulating way.
The defects of the prior art are as follows: in the system, except that heat generated by the condenser is carried away by cooling water, high temperature generated in other links is still circulated in equipment, for example, hot backwater generated by a cooling water pipeline returns to an evaporator, the evaporator conveys a high-temperature and high-pressure gas refrigerant to a compressor, and all heat energy is cooled in the condenser, so that higher requirements on the power of the condenser are met, and the problem of poor refrigeration effect when multiple units run is also caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a central air conditioning water system, and the heat that produces to different links in the water system all cools off through the cooling water in the cooling tower, does further preliminary treatment before the heat gets into the condenser to reduce the power requirement to the condenser, when making multiunit operation, still can guarantee its refrigeration effect.
The purpose of the utility model is realized through the following technical scheme:
a central air conditioning water system comprising:
the evaporator, the compressor, the condenser and the expansion valve are connected in sequence to form a main machine system of closed-loop cold circulation;
the refrigerating system consists of a refrigerating pump and a refrigerating water pipeline;
the cooling system consists of a cooling pump unit, a cooling water tower and a cooling water pipeline;
the evaporator, the refrigerating pump and the chilled water pipeline are sequentially connected to form a closed chilled water circulation loop, chilled water generated by the evaporator is pumped to the chilled water pipeline by the chilled water pump, and flows back to the evaporator after heat exchange is finished indoors;
a connecting pipe between the chilled water pipeline and the evaporator and a connecting pipe between the compressor and the condenser are arranged in a section of the cooling water pipeline, a liquid inlet of the cooling pump unit is connected with the cooling water tower, and a liquid outlet of the cooling pump unit is respectively connected with a cooling water inlet of the condenser and a liquid inlet of the cooling water pipeline;
and a cooling water outlet of the condenser and a liquid outlet of the cooling water pipeline are respectively connected with a water return port of the cooling water tower.
In order to improve the power of the unit and reduce the requirement on the condenser, the heat generated in each link in the system is further pretreated and cooled in a cooling water mode, so that the cooling power required in the operation process of the unit is reduced, and particularly for large-scale central air-conditioning systems in office buildings or factories, a better refrigeration effect can be obtained on the premise of ensuring that the power of the condenser or the unit is not changed when multiple units are operated.
Further, cooling water pipeline's feed liquor direction is opposite with the flow direction that corresponds in the connecting tube, and the efficiency of cooling water cooling can further be improved to this design.
Furthermore, the cooling water pipeline adopts a corrugated pipe and is sleeved outside the connecting pipe, namely the laying and the shape of the connecting pipe of the original equipment cannot be influenced by the increase of the cooling water pipeline.
Furthermore, the flow formed between the corrugated pipe and the connecting pipe is greater than or equal to the flow in the connecting pipe.
Furthermore, the cooling pump unit comprises at least three cooling pumps, wherein one cooling pump is connected with the condenser, and the other two or more cooling pumps are respectively connected with a cooling water pipeline.
Further, each cooling pump is controlled by a different control switch.
Further, the cooling water pipelines are independent from each other, and a throttle valve is arranged for adjusting the flow quantity of the cooling water pipelines.
The utility model has the advantages that: the scheme utilizes the cold dewatering water to carry out cooling pretreatment on heat generated by each link in the water system, so that the initial temperature of the refrigerant entering the condenser is lower at last, the condenser can reduce the temperature of the refrigerant to be lower in the same time, the refrigeration effect of the system is also improved, and especially under the condition of multiple units, the mode effect is better, and a large amount of electric energy can be saved.
Drawings
FIG. 1 is a diagram of a prior art central air conditioning water system;
fig. 2 is a schematic block diagram of the present invention.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 2, a central air-conditioning water system includes:
the evaporator, the compressor, the condenser and the expansion valve are connected in sequence to form a main machine system of closed-loop cold circulation;
the refrigerating system consists of a refrigerating pump and a refrigerating water pipeline;
the cooling system consists of a cooling pump unit, a cooling water tower and a cooling water pipeline;
the evaporator, the refrigerating pump and the chilled water pipeline are sequentially connected to form a closed chilled water circulation loop, chilled water generated by the evaporator is pumped to the chilled water pipeline by the chilled water pump, and flows back to the evaporator after heat exchange is finished indoors;
a connecting pipe between the freezing water pipeline and the evaporator and a connecting pipe between the compressor and the condenser are arranged in a section of cooling water pipeline, a liquid inlet of the cooling pump unit is connected with the cooling water tower, and a liquid outlet of the cooling pump unit is respectively connected with a cooling water inlet of the condenser and a liquid inlet of the cooling water pipeline;
the cooling water outlet of the condenser and the liquid outlet of the cooling water pipeline are respectively connected with the water return port of the cooling water tower.
Optionally, a central air conditioning water system, cooling water pipeline's feed liquor direction is opposite with the flow direction in corresponding the connecting tube.
Optionally, in the central air-conditioning water system, the cooling water pipeline is a corrugated pipe, the corrugated pipe is sleeved outside the connecting pipe, and the flow formed between the corrugated pipe and the connecting pipe is greater than or equal to the flow in the connecting pipe.
Optionally, the cooling pump unit of the central air-conditioning water system includes at least three cooling pumps, one of the cooling pumps is connected to the condenser, and the other two or more cooling pumps are respectively connected to a cooling water pipeline, wherein the number of the cooling pumps is mainly related to the number of chilled water pipelines, that is, the number of the chilled water pipelines is also required to be provided with the corresponding cooling pump, and the central air-conditioning water system also includes two water pumps included in the host system. Wherein, each cooling pump adopts different control switch control, and the refrigerated water pipeline that just puts into operation adjusts promptly, and under general condition, only the cooling pump that the condenser corresponds is in normally open state, and all the other cooling pumps are controlled according to central air conditioning's load.
Alternatively, the cooling water pipelines are independent of each other, and a throttle valve is provided for adjusting the flow of the cooling water pipelines, that is, the circulation of the cooling water can be controlled by adjusting the opening of the throttle valve.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (7)
1. A central air conditioning water system, characterized by comprising:
the evaporator, the compressor, the condenser and the expansion valve are connected in sequence to form a main machine system of closed-loop cold circulation;
the refrigerating system consists of a refrigerating pump and a refrigerating water pipeline;
the cooling system consists of a cooling pump unit, a cooling water tower and a cooling water pipeline;
the evaporator, the refrigerating pump and the chilled water pipeline are sequentially connected to form a closed chilled water circulation loop, chilled water generated by the evaporator is pumped to the chilled water pipeline by the chilled water pump, and flows back to the evaporator after heat exchange is finished indoors;
a connecting pipe between the chilled water pipeline and the evaporator and a connecting pipe between the compressor and the condenser are arranged in a section of the cooling water pipeline, a liquid inlet of the cooling pump unit is connected with the cooling water tower, and a liquid outlet of the cooling pump unit is respectively connected with a cooling water inlet of the condenser and a liquid inlet of the cooling water pipeline;
and a cooling water outlet of the condenser and a liquid outlet of the cooling water pipeline are respectively connected with a water return port of the cooling water tower.
2. The central air-conditioning water system as claimed in claim 1, wherein the inlet direction of the cooling water pipeline is opposite to the flow direction in the corresponding connecting pipe.
3. The central air-conditioning water system according to claim 2, wherein the cooling water pipeline is a corrugated pipe and is sleeved outside the connecting pipe.
4. A central air-conditioning water system as claimed in claim 3, wherein the flow rate formed between the corrugated pipe and the connection pipe is equal to or greater than the flow rate in the connection pipe.
5. The central air-conditioning water system as claimed in claim 4, wherein the cooling pump unit comprises at least three cooling pumps, one of which is connected to the condenser, and the remaining two or more cooling pumps are respectively connected to a cooling water pipe.
6. The central air-conditioning water system as claimed in claim 5, wherein each cooling pump is controlled by a different control switch.
7. The central air-conditioning water system as claimed in claim 6, wherein the cooling water pipes are independent of each other, and a throttle valve is provided for adjusting the flow amount of the cooling water pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022704172.0U CN213931253U (en) | 2020-11-20 | 2020-11-20 | Central air-conditioning water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022704172.0U CN213931253U (en) | 2020-11-20 | 2020-11-20 | Central air-conditioning water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213931253U true CN213931253U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022704172.0U Active CN213931253U (en) | 2020-11-20 | 2020-11-20 | Central air-conditioning water system |
Country Status (1)
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|---|---|
| CN (1) | CN213931253U (en) |
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2020
- 2020-11-20 CN CN202022704172.0U patent/CN213931253U/en active Active
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