CN211503306U - Cooling and heating type multi-connected air conditioning system with double condensers for subway - Google Patents
Cooling and heating type multi-connected air conditioning system with double condensers for subway Download PDFInfo
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- CN211503306U CN211503306U CN202020037505.6U CN202020037505U CN211503306U CN 211503306 U CN211503306 U CN 211503306U CN 202020037505 U CN202020037505 U CN 202020037505U CN 211503306 U CN211503306 U CN 211503306U
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Abstract
A subway double-condenser cooling and heating type multi-connected air conditioning system comprises an indoor unit, a compressor unit, a four-way reversing valve, an air-cooled condenser, a water-cooled condenser and a plurality of electric valves, wherein the compressor unit is connected to two interfaces of the four-way reversing valve, a refrigerant outlet of the indoor unit is connected to a third interface of the four-way reversing valve, first refrigerant ports of the air-cooled condenser and the water-cooled condenser are simultaneously connected to a fourth interface of the four-way reversing valve, a second refrigerant port of the air-cooled condenser and a second refrigerant port of the water-cooled condenser are simultaneously communicated to a refrigerant inlet of the indoor unit, the indoor unit is arranged in a management room, the compressor unit, the four-way reversing valve and the water-; therefore, the utility model discloses pipeline equipment arranges simply, can practice thrift underground ground space, and adjusts through the indoor set in each room, and the locellus energy conservation capacity is high, and the air conditioner is effectual.
Description
Technical Field
The utility model relates to the technical field, especially, relate to a two condenser cold-warm type multiple air conditioning system of subway.
Background
At present, air cooling and water cooling air conditioning systems are widely applied, the air cooling system can realize the functions of heat supply in winter and cooling in summer, and the water cooling system can only realize the function of cooling in summer. Under the cooling working condition in summer, when the same load requirement is met, the efficiency of the water cooling system is higher than that of the air cooling system. Therefore, how to integrate the two system types into one system realizes the functions of efficient cooling in summer and heating in winter, and has great use value.
At present, when the air conditioning system is applied to a room area for subway station equipment management, the heat extraction efficiency is reduced because the air conditioning system is located in an underground closed space under the refrigeration working condition in summer, so that the system efficiency (COP) of the refrigeration working condition is lower than that of the air conditioning system in which an outdoor unit is arranged on the ground. If the outdoor unit is partially arranged on the ground, the external air is used as a cold source under the refrigeration working condition, the system efficiency (COP) is about 3.0, and the COP of the water-cooled air conditioning system can reach more than 5.0. Therefore, under the refrigeration working condition, the efficiency of the air cooling system is only half of that of the water cooling system, namely the scale of the overground outdoor air cooling condenser is 2 times that of the water cooling condenser, and more overground land resources are occupied. In addition, in winter, if the outdoor temperature is low, the air-cooled condenser may not operate normally, and the cooling demand of some equipment rooms cannot be met.
The water-cooling air-conditioning system applied at present has higher efficiency than an air-cooling system under the refrigeration working condition, but the outdoor water-cooling tower is adopted, and the cooling tower is used when the outdoor temperature is lower, so that the measures of heating cooling water or adopting electric heat-insulating coating of the pipeline and the like are needed to prevent the water flowing through the pipeline and an accessory electric valve from freezing, and the electric energy consumption is higher. In addition, a pure water-cooling air conditioning system cannot realize a heat supply working condition when no auxiliary heat source exists.
Therefore, in view of the above-mentioned drawbacks, the designer of the present invention develops a dual-condenser cooling and heating type multi-connected air conditioning system for subway by combining the experience and achievement of the related industries for many years through careful research and design to overcome the above-mentioned drawbacks.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two condenser cooling and heating type multiple air conditioning system of subway, its simple structure, convenient operation can practice thrift the underground space, and the air conditioner is effectual.
In order to achieve the above object, the utility model discloses a two condenser cold-warm type multiple air conditioning system of subway, including indoor set, compressor unit, four-way reversing valve, air cooled condenser, water cooled condenser and a plurality of motorised valve, its characterized in that:
the compressor unit, the four-way reversing valve and the water-cooled condenser are arranged in a machine room, the air-cooled condenser is arranged in a tunnel, a cooling water inlet and outlet of the water-cooled condenser are communicated with a cooling water supply device of an outdoor space, a first electric valve is arranged between the first refrigerant port and the fourth port of the air-cooled condenser, a second electric valve is arranged between the first refrigerant port and the fourth port of the water-cooled condenser, and a third electric valve is arranged between the second refrigerant port of the air-cooled condenser and the refrigerant inlet of the indoor unit, and a fourth electric valve is arranged between the second refrigerant port of the water-cooled condenser and the refrigerant inlet of the indoor unit.
Wherein: the indoor units are arranged in parallel, and the refrigerant outlet of each indoor unit is provided with an expansion valve.
Wherein: each indoor unit includes a fan and an evaporator.
Wherein: and expansion valves are arranged at second refrigerant ports of the air-cooled condenser and the water-cooled condenser.
Wherein: the cooling water supply device comprises a water pump and a cooling tower, wherein an inlet of the water pump is connected to the cooling tower, an outlet of the water pump is connected to a cooling water inlet of the water-cooled condenser, and a cooling water outlet of the water-cooled condenser is connected to the cooling tower.
According to the structure, the utility model discloses a two condenser cooling and heating type multiple air conditioning system of subway has following effect:
1. the arrangement of pipeline equipment is simple, underground and ground space can be saved, and the indoor units can be used for adjusting in each room, so that the energy-saving capacity of the indoor unit is high, and the air-conditioning effect is good.
2. The air-cooled condenser is used as an evaporator of the air conditioning system in winter to absorb air heat in winter, the system is simple to operate, the air heat in the subway tunnel can be recovered, and the purpose of energy conservation is achieved.
3. And a water-cooled condenser is adopted for cooling in summer, so that the system efficiency is high.
4. The air-cooled condenser is adopted for cooling in winter and is arranged at the underground tunnel, the heat exchange of the condenser is slightly influenced by the temperature of the air outside the ground, and the cooling function is stably realized.
The details of the present invention can be obtained from the following description and the attached drawings.
Drawings
Fig. 1 shows a schematic structural diagram of a cooling and heating type multiple air conditioning system of a double condenser in a subway according to the present invention.
Reference numerals:
101-a tunnel; 102-an outdoor space; 103-machine room; 104-management house; 1-an indoor unit; 2-a compressor unit; a 3-four-way reversing valve; 4-air cooling condenser; 5-water-cooled condenser; 6-an expansion valve; 71-first electrically operated valve; 72-second electrically operated valve; 73-third electrically operated valve; 74-fourth electrically operated valve.
Detailed Description
Referring to fig. 1, the utility model discloses a subway double condenser cooling and heating type multiple air conditioning system is shown.
The subway double-condenser cooling and heating type multi-connected air conditioning system comprises an indoor unit 1, a compressor unit 2, a four-way reversing valve 3, an air-cooled condenser 4, a water-cooled condenser 5 and a plurality of electric valves, wherein a compression inlet and a compression outlet of the compressor unit 2 are respectively connected to two interfaces of the four-way reversing valve 3, a refrigerant outlet of the indoor unit 1 is connected to a third interface of the four-way reversing valve 3, first refrigerant ports of the air-cooled condenser 4 and the water-cooled condenser 5 are simultaneously connected to a fourth interface of the four-way reversing valve, a second refrigerant port is simultaneously communicated to a refrigerant inlet of the indoor unit 1, the indoor unit 1 is arranged in a management room 104, the compressor unit 2, the four-way reversing valve 3 and the water-cooled condenser 5 are arranged in a machine room 103, the air-cooled condenser 4 is arranged in a tunnel 101, and a cooling water inlet and outlet of, a first electric valve 71 is arranged between the first refrigerant port and the fourth interface of the air-cooled condenser 4, a second electric valve 72 is arranged between the first refrigerant port and the fourth interface of the water-cooled condenser 5, a third electric valve 73 is arranged between the second refrigerant port of the air-cooled condenser 4 and the refrigerant inlet of the indoor unit 1, and a fourth electric valve 74 is arranged between the second refrigerant port of the water-cooled condenser 5 and the refrigerant inlet of the indoor unit.
Therefore, the switching of the air-cooled condenser and the water-cooled condenser on the condensation side of the system is realized by switching the electric valves, so that the functions of cooling in winter, heating in winter and cooling in summer are realized; when the cold supply function in winter is realized, the first electric valve 71 and the third electric valve 73 are opened, the second electric valve 72 and the fourth electric valve 74 are closed, the refrigerant is directly evaporated, absorbed and cooled through an indoor unit at the room using side, and after being compressed by the compressor unit, the refrigerant releases heat and condenses in an air-cooled condenser in the tunnel, so that the cold supply function is realized; when the winter heat supply function is realized, the first electric valve 71 and the third electric valve 73 are opened, the second electric valve 72 and the fourth electric valve 74 are closed, the four-way reversing valve 3 is used for switching pipelines, an air-cooled condenser of a tunnel is used as an evaporator, an indoor unit of a management room is used as a condenser, a refrigerant is directly evaporated and absorbs heat in the air-cooled condenser in the tunnel, and after being compressed by a compressor unit, the refrigerant is condensed and releases heat in the management room through the indoor unit to realize the heat supply function; in summer, the second electric valve 72 and the fourth electric valve 74 are opened, the first electric valve 71 and the third electric valve 73 are closed, refrigerant is directly evaporated, absorbed and cooled through an indoor unit in the management room, the refrigerant is compressed by the compressor unit and then is released and condensed through a water-cooled condenser in the room, and released heat is absorbed by the cooling water system and is exhausted to an outdoor space.
The indoor units 1 are arranged in parallel, the refrigerant outlet of each indoor unit is provided with an expansion valve 6, and each indoor unit comprises a fan and an evaporator.
And expansion valves are arranged at second refrigerant ports of the air-cooled condenser 4 and the water-cooled condenser 5.
Wherein, cooling water feeding device contains water pump and cooling tower, the entry linkage of water pump is to the cooling tower, and exit linkage is to water-cooled condenser's cooling water entry, water-cooled condenser's cooling water exit linkage is to the cooling tower.
Therefore, the utility model has the advantages that:
1. under the refrigeration working condition in summer, the unit is connected with the machine room side and the outdoor side by switching the use room side through the electric valve. The characteristic of efficient heat exchange between the heat exchange medium water of the water-cooled condenser and the refrigerant is utilized to ensure that the refrigeration working condition operates efficiently. The utility model discloses the specific heat capacity of the heat transfer medium water that adopts when the refrigeration operating mode in summer is higher than the specific heat capacity of air-cooled air conditioning unit heat transfer medium air, consequently, under the prerequisite of equal refrigeration ability, the utility model discloses in not only can guarantee refrigerating system high efficiency operation, and outdoor shared soil resource area is less than the shared soil resource area of air-cooled air conditioning system.
2. Under the refrigeration operating mode in winter, the unit switches through the motorised valve and uses room side and computer lab side, tunnel side to be connected. The air-cooled condenser is arranged in the underground space of the station by combining the characteristics of the subway station, so that the heat exchange of the condenser is slightly influenced by the temperature of the air outside the ground, and the cooling function is stably realized.
3. Under the working condition of heating in winter, the unit is switched through the electrically operated valve to use the room side to be connected with the machine room side and the tunnel side, combines the characteristics of a subway station, arranges the air-cooled condenser in the underground space where the station is located, can shorten the tubing length of a refrigerant pipeline, reduces the attenuation loss of cold energy, can utilize the waste heat of the air in the underground space in winter, realizes the complementary energy conservation of cold and heat, and ensures the high-efficiency operation of a heating system.
It is to be understood that the above description and illustrations are exemplary only and are not intended to limit the present disclosure, application, or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention is intended to include any embodiments that fall within the foregoing description and the appended claims.
Claims (5)
1. The utility model provides a two condenser cold-warm type multiple air conditioning system of subway, includes indoor set, compressor unit, four-way reversing valve, air-cooled condenser, water-cooled condenser and a plurality of motorised valve, its characterized in that:
the compressor unit, the four-way reversing valve and the water-cooled condenser are arranged in a machine room, the air-cooled condenser is arranged in a tunnel, a cooling water inlet and outlet of the water-cooled condenser are communicated with a cooling water supply device of an outdoor space, a first electric valve is arranged between the first refrigerant port and the fourth port of the air-cooled condenser, a second electric valve is arranged between the first refrigerant port and the fourth port of the water-cooled condenser, and a third electric valve is arranged between the second refrigerant port of the air-cooled condenser and the refrigerant inlet of the indoor unit, and a fourth electric valve is arranged between the second refrigerant port of the water-cooled condenser and the refrigerant inlet of the indoor unit.
2. The subway dual-condenser cooling and heating type multi-connected air conditioning system as claimed in claim 1, wherein: the indoor units are arranged in parallel, and the refrigerant outlet of each indoor unit is provided with an expansion valve.
3. The subway dual-condenser cooling and heating type multi-connected air conditioning system as claimed in claim 2, wherein: each indoor unit includes a fan and an evaporator.
4. The subway dual-condenser cooling and heating type multi-connected air conditioning system as claimed in claim 1, wherein: and expansion valves are arranged at second refrigerant ports of the air-cooled condenser and the water-cooled condenser.
5. The subway dual-condenser cooling and heating type multi-connected air conditioning system as claimed in claim 1, wherein: the cooling water supply device comprises a water pump and a cooling tower, wherein an inlet of the water pump is connected to the cooling tower, an outlet of the water pump is connected to a cooling water inlet of the water-cooled condenser, and a cooling water outlet of the water-cooled condenser is connected to the cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020037505.6U CN211503306U (en) | 2020-01-09 | 2020-01-09 | Cooling and heating type multi-connected air conditioning system with double condensers for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020037505.6U CN211503306U (en) | 2020-01-09 | 2020-01-09 | Cooling and heating type multi-connected air conditioning system with double condensers for subway |
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| Publication Number | Publication Date |
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| CN211503306U true CN211503306U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020037505.6U Active CN211503306U (en) | 2020-01-09 | 2020-01-09 | Cooling and heating type multi-connected air conditioning system with double condensers for subway |
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| CN (1) | CN211503306U (en) |
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2020
- 2020-01-09 CN CN202020037505.6U patent/CN211503306U/en active Active
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