CN210832600U - Split type ultralow-ring-temperature air source heat pump unit - Google Patents

Split type ultralow-ring-temperature air source heat pump unit Download PDF

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Publication number
CN210832600U
CN210832600U CN201921840568.9U CN201921840568U CN210832600U CN 210832600 U CN210832600 U CN 210832600U CN 201921840568 U CN201921840568 U CN 201921840568U CN 210832600 U CN210832600 U CN 210832600U
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China
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oil
screw compressor
outlet
inlet
heat pump
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CN201921840568.9U
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Chinese (zh)
Inventor
汤岩
何辉
芮火根
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Taijia Air Conditioning System Jiangsu Co Ltd
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Taijia Air Conditioning System Jiangsu Co Ltd
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Abstract

The utility model discloses a split type ultralow ring temperature air source heat pump unit, including screw compressor, this screw compressor includes the lubricating oil entry, screw compressor's exit linkage is to the entry of an oil separator, this oil separator has oil content export and refrigerant export, the oil content export of this oil separator is connected to the entry of an oil cooler, the export of this oil cooler is connected to the lubricating oil entry of this screw compressor, the refrigerant export of this oil separator is connected to the entry of a water-cooled condenser through an electronic ball valve, the export of this water-cooled condenser is connected to the entry of an economic ware, the export of this economic ware is connected to the entry of an air-cooled evaporimeter, the export of this air-cooled evaporimeter is connected to the entry of a vapour and liquid separator, the export of this vapour and liquid separator is connected to the entry of this screw compressor, simultaneously, this air-cooled evaporimeter arranges outdoors, the screw compressor and the like are disposed in the chamber. The advantages are that: the performance and the stability of the unit are higher, and the noise is lower.

Description

Split type ultralow-ring-temperature air source heat pump unit
Technical Field
The invention relates to the technical field of air source heat pumps, in particular to a split type ultralow-ring-temperature air source heat pump unit.
Background
The air source heat pump is used as a benefit mode of renewable energy, has the characteristics of refrigeration in summer, heating in winter, no occupation of a machine room, no pollution to the environment, flexible application and the like, thereby saving energy, protecting environment, receiving more and more extensive attention and being applied to various projects.
However, the range of application of air-source heat pumps is limited by climatic conditions. That is, as the outdoor temperature decreases, the user's heat demand increases. When the outdoor air temperature is very low, the heating capacity of the air source heat pump cannot meet the heating requirement of users. Meanwhile, the heat exchanger has the possibility of frost cracking due to low ambient temperature. And the noise of the unit is large, which affects the life of the residents around.
Disclosure of Invention
The invention aims to provide a split type ultralow-loop-temperature air source heat pump unit which has the characteristics of higher performance and stability and lower noise.
The technical scheme adopted by the invention is as follows: a split type ultralow-ring-temperature air source heat pump unit comprises a screw compressor, wherein the screw compressor comprises a lubricating oil inlet, an outlet of the screw compressor is connected to an inlet of an oil separator, the oil separator is provided with an oil outlet and a refrigerant outlet, the oil outlet of the oil separator is connected to an inlet of an oil cooler, an outlet of the oil cooler is connected to a lubricating oil inlet of the screw compressor, the refrigerant outlet of the oil separator is connected to an inlet of a water-cooled condenser through an electric ball valve, an outlet of the water-cooled condenser is connected to an inlet of an economizer, an outlet of the economizer is connected to an inlet of an air-cooled evaporator, an outlet of the air-cooled evaporator is connected to an inlet of a gas-liquid separator, an outlet of the gas-liquid separator is connected to the inlet of the screw compressor, and meanwhile, the air-cooled evaporator is independently arranged on an outdoor, the screw compressor, oil separator, oil cooler, water cooled condenser, economizer, and gas-liquid separator are disposed on a frame located in the chamber.
The oil cooler is an oil cooler cooled by water.
The screw compressor is a single-machine two-stage compressor.
And a refrigerant outlet of the oil separator is provided with a pressure maintaining valve, and the refrigerant outlet is divided into two paths after passing through the pressure maintaining valve, wherein one path is connected with the water-cooled condenser, and the other path is connected with a hot gas bypass defrosting system.
The economizer adopts a plate heat exchanger.
Compared with the prior art, the invention has the advantages that: the performance and the stability of the unit are higher, and the noise is lower. The split type ultralow-ring-temperature air source heat pump unit is provided with the air cooling evaporators independently and is placed outdoors, and other components such as the screw compressor and the like are arranged on a frame in a centralized manner and are placed indoors. Because the indoor heat preservation performance is better, can effectively prevent the container frost crack, and the envelope in room forms certain separation to the noise, can effectively reduce the influence to the resident. The screw compressor adopts single-machine two-stage compression, and the refrigerant is compressed in two stages, so that the operation condition of the compressor can be improved. Therefore, the anti-freezing air source heat pump unit can effectively prevent freezing, reduce unit noise transmission and greatly widen the application range of the air source heat pump unit. Meanwhile, a large amount of energy can be saved, the pollution to the environment is reduced, and great social benefit and economic benefit are generated.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic view of the indoor unit according to the present invention;
fig. 3 is a schematic view of an outdoor unit according to the present invention.
In the figure: 1. the system comprises a screw compressor, 2, an oil separator, 3, an oil cooler, 4, an electric ball valve, 5, a water-cooled condenser, 6, an economizer, 7, an air-cooled evaporator, 8, a gas-liquid separator, 9 and a pressure maintaining valve.
Detailed Description
Examples, see fig. 1-3: a split type ultralow-ring-temperature air source heat pump unit comprises a screw compressor 1. The screw compressor 1 comprises a lubricating oil inlet. Of course, the screw compressor 1 necessarily has an inlet and an outlet for the ingress and egress of refrigerant.
Further speaking:
the outlet of the screw compressor 1 is connected to the inlet of an oil separator 2. The oil separator 2 has an oil outlet and a refrigerant outlet. That is, the frozen oil separated in the oil separator 2 flows out from the oil outlet, and the separated refrigerant flows out from the refrigerant outlet. The oil outlet of the oil separator 2 is connected to the inlet of an oil cooler 3, and the outlet of the oil cooler 3 is connected to the lubricating oil inlet of the screw compressor 1. The refrigerant outlet of the oil separator 2 is connected to the inlet of a water cooled condenser 5 through an electric ball valve 4. The outlet of the water cooled condenser 5 is connected to the inlet of an economizer 6. The outlet of the economizer 6 is connected to the inlet of an air-cooled evaporator 7. The outlet of the air-cooled evaporator 7 is connected to the inlet of a gas-liquid separator 8. The outlet of the gas-liquid separator 8 is connected to the inlet of the screw compressor 1. Meanwhile, the air-cooled evaporator 7 is separately disposed on a frame located outdoors; the screw compressor 1, the oil separator 2, the oil cooler 3, the water-cooled condenser 5, the economizer 6, and the gas-liquid separator 8 are disposed on a frame located in the room.
Optimizing:
the oil cooler 3 is an oil cooler cooled with water.
The screw compressor 1 is a single-stage two-stage compressor.
The economizer 6 employs a plate heat exchanger.
And (4) continuing optimization:
the refrigerant outlet of the oil separator 2 is provided with a pressure maintaining valve 9, and the refrigerant outlet is divided into two paths after passing through the pressure maintaining valve 9, wherein one path is connected with the water-cooled condenser 5, and the other path is connected with a hot gas bypass defrosting system.
The working principle of the invention is as follows:
the refrigeration oil separated by the oil separator 2 enters the oil cooler 3, is cooled by the oil cooler 3, and then flows back to the screw compressor 1 to lubricate the screw compressor 1. The oil cooling medium is user side backwater. The energy of the oil cooling is recovered by hot water and then is used by users, and the energy utilization efficiency is improved. The oil circuit is inevitably provided with an oil filter, an oil flow switch, an electromagnetic valve and other components, and two ends of the oil filter are connected in parallel with an oil pressure difference switch for protection.
The refrigerant enters the air-cooled evaporator 7 after being supercooled by the economizer 6, each evaporator is provided with a throttling element, and the refrigerant absorbs heat in the air-cooled evaporator 7 and then enters the gas-liquid separator 8. One end of the hot gas bypass defrosting system is connected with the exhaust of the screw compressor 1, and the other end of the hot gas bypass defrosting system is connected between the throttling element and the evaporator.
Namely, the split type ultra-low ring temperature air source heat pump unit improves the performance and stability of the unit by means of the pressure maintaining valve 9, the oil cooler 3 and the independent hot gas bypass defrosting system. And the air-cooled evaporator is independently arranged outdoors, and other components are arranged indoors, so that the anti-freezing effect is achieved, the noise transmission of the unit can be reduced, and the application range of the air source heat pump unit is greatly widened. Meanwhile, a large amount of energy can be saved, the pollution to the environment is reduced, and great social benefit and economic benefit can be generated.
The split type ultra-low ring temperature air source heat pump unit is widely used at present, and other structures and principles are the same as those in the prior art, so that the detailed description is omitted.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. Split type ultralow ring temperature air source heat pump set, including screw compressor (1), this screw compressor (1) is including lubricating oil entry, its characterized in that: the outlet of the screw compressor (1) is connected to the inlet of an oil separator (2), the oil separator (2) has an oil outlet and a refrigerant outlet, the oil outlet of the oil separator (2) is connected to the inlet of an oil cooler (3), the outlet of the oil cooler (3) is connected to the lubricating oil inlet of the screw compressor (1), the refrigerant outlet of the oil separator (2) is connected to the inlet of a water-cooled condenser (5) through an electric ball valve (4), the outlet of the water-cooled condenser (5) is connected to the inlet of an economizer (6), the outlet of the economizer (6) is connected to the inlet of an air-cooled evaporator (7), the outlet of the air-cooled evaporator (7) is connected to the inlet of a gas-liquid separator (8), the outlet of the gas-liquid separator (8) is connected to the inlet of the screw compressor (1), and at the same time, the air-cooled evaporator (7) is separately arranged on a frame located outdoors, and the screw compressor (1), the oil separator (2), the oil cooler (3), the water-cooled condenser (5), the economizer (6) and the gas-liquid separator (8) are arranged on a frame located indoors.
2. The split type ultralow-ring-temperature air source heat pump unit according to claim 1, characterized in that: the oil cooler (3) is an oil cooler cooled by water.
3. The split type ultralow-ring-temperature air source heat pump unit according to claim 1, characterized in that: the screw compressor (1) is a single-machine two-stage compressor.
4. The split type ultralow-ring-temperature air source heat pump unit according to claim 1, characterized in that: a refrigerant outlet of the oil separator (2) is provided with a pressure maintaining valve (9), and the refrigerant outlet is divided into two paths after passing through the pressure maintaining valve (9), wherein one path is connected with the water-cooled condenser (5), and the other path is connected with a hot gas bypass defrosting system.
5. The split type ultralow-ring-temperature air source heat pump unit according to claim 1, characterized in that: the economizer (6) adopts a plate heat exchanger.
CN201921840568.9U 2019-10-30 2019-10-30 Split type ultralow-ring-temperature air source heat pump unit Active CN210832600U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921840568.9U CN210832600U (en) 2019-10-30 2019-10-30 Split type ultralow-ring-temperature air source heat pump unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921840568.9U CN210832600U (en) 2019-10-30 2019-10-30 Split type ultralow-ring-temperature air source heat pump unit

Publications (1)

Publication Number Publication Date
CN210832600U true CN210832600U (en) 2020-06-23

Family

ID=71262177

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921840568.9U Active CN210832600U (en) 2019-10-30 2019-10-30 Split type ultralow-ring-temperature air source heat pump unit

Country Status (1)

Country Link
CN (1) CN210832600U (en)

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