CN211575580U - Screw compression refrigeration heating system with two-stage economizer - Google Patents
Screw compression refrigeration heating system with two-stage economizer Download PDFInfo
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- CN211575580U CN211575580U CN202020137977.9U CN202020137977U CN211575580U CN 211575580 U CN211575580 U CN 211575580U CN 202020137977 U CN202020137977 U CN 202020137977U CN 211575580 U CN211575580 U CN 211575580U
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 230000006835 compression Effects 0.000 title claims abstract description 10
- 238000007906 compression Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- 239000013589 supplement Substances 0.000 claims 2
- 230000009469 supplementation Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
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Abstract
本实用新型公开带两级经济器的螺杆压缩制冷供热***，其螺杆压缩机的出口与冷凝器的入口连接，冷凝器的出口分成两路，一路经第一节流阀与第一经济器的换热管入口连接，另一路与第一经济器的壳侧入口连接，第一经济器的换热管出口与螺杆压缩机靠近排气端的第一补气口连接；第一经济器的壳侧出口分成两路，一路经第二节流阀与第二经济器的换热管入口连接，另一路与第二经济器的壳侧入口连接，第二经济器的换热管出口与螺杆压缩机靠近吸气端的第二补气口连接；第二经济器的壳侧出口经第三节流阀与蒸发器的入口连接，蒸发器出口与螺杆压缩机入口连接。本实用新型经两级经济器两次中间补气，可有效提高***热力性能。
The utility model discloses a screw compression refrigeration and heating system with a two-stage economizer. The outlet of the screw compressor is connected with the inlet of the condenser, and the outlet of the condenser is divided into two paths. The heat exchange tube inlet of the first economizer is connected to the inlet, the other is connected to the shell side inlet of the first economizer, and the heat exchange tube outlet of the first economizer is connected to the first air supply port of the screw compressor near the exhaust end; the shell side of the first economizer is connected. The outlet is divided into two paths, one is connected to the inlet of the heat exchange tube of the second economizer through the second throttle valve, the other is connected to the inlet of the shell side of the second economizer, and the outlet of the heat exchange tube of the second economizer is connected to the screw compressor. The second air supply port close to the suction end is connected; the shell side outlet of the second economizer is connected to the inlet of the evaporator through the third throttle valve, and the outlet of the evaporator is connected to the inlet of the screw compressor. The utility model can effectively improve the thermal performance of the system through two intermediate gas supplementation by the two-stage economizer.
Description
技术领域technical field
本实用新型涉及制冷技术领域，特别是涉及一种带两级经济器的螺杆压缩制冷供热***。The utility model relates to the technical field of refrigeration, in particular to a screw compression refrigeration and heating system with a two-stage economizer.
背景技术Background technique
螺杆式压缩机容积效率高，广泛用于制冷空调***，由于其本身的结构特点，可以利用中间补气提高***的效率，现有的单机螺杆式压缩机带中间补气，通常是一次补气，实现单一制冷或是制热，因此，需要进一步提升，以进一步减少螺杆式压缩机的功率消耗，有效提高***的效率，以节约能源。Screw compressors have high volumetric efficiency and are widely used in refrigeration and air conditioning systems. Due to their structural characteristics, intermediate air supply can be used to improve the efficiency of the system. The existing single-machine screw compressors have intermediate air supply, usually a single air supply. , to achieve single cooling or heating, therefore, it needs to be further improved to further reduce the power consumption of the screw compressor, effectively improve the efficiency of the system, and save energy.
实用新型内容Utility model content
本实用新型的目的是针对现有技术的缺陷，提供一种带两级经济器的螺杆压缩制冷供热***。The purpose of the utility model is to provide a screw compression refrigeration and heating system with a two-stage economizer in view of the defects of the prior art.
为实现本实用新型的目的所采用的技术方案是：The technical scheme adopted for realizing the purpose of the present utility model is:
本实用新型带两级经济器的螺杆压缩制冷供热***，包括螺杆压缩机、冷凝器、第一经济器、第二经济器、蒸发器；所述螺杆压缩机的出口与冷凝器的入口连接，所述冷凝器的出口分成两路，一路经第一节流阀与第一经济器的换热管入口连接，另一路与第一经济器的壳侧入口连接；第一经济器的换热管出口与螺杆压缩机靠近排气端的第一补气口连接；第一经济器的壳侧出口分成两路，一路经第二节流阀与第二经济器的换热管入口连接，另一路与第二经济器的壳侧入口连接；第二经济器的换热管出口与螺杆压缩机靠近吸气端的第二补气口连接；第二经济器的壳侧出口经第三节流阀与蒸发器的入口连接，蒸发器的出口与螺杆压缩机的入口连接。The utility model has a screw compression refrigeration and heating system with a two-stage economizer, comprising a screw compressor, a condenser, a first economizer, a second economizer and an evaporator; the outlet of the screw compressor is connected with the inlet of the condenser , the outlet of the condenser is divided into two paths, one is connected to the inlet of the heat exchange pipe of the first economizer through the first throttle valve, and the other is connected to the inlet of the shell side of the first economizer; the heat exchange of the first economizer The pipe outlet is connected to the first air supply port of the screw compressor near the exhaust end; the shell side outlet of the first economizer is divided into two paths, one is connected to the heat exchange pipe inlet of the second economizer through the second throttle valve, and the other is connected to the The shell side inlet of the second economizer is connected; the heat exchange tube outlet of the second economizer is connected to the second air supply port of the screw compressor near the suction end; the shell side outlet of the second economizer is connected to the evaporator through the third throttle valve The inlet of the evaporator is connected with the inlet of the screw compressor.
本实用新型的带两级经济器的螺杆压缩制冷供热***，沿气缸轴向开设两个补气口，通过两级经济器两次中间补气，可以有效提高***的热力性能，节约能源消耗。The screw compression refrigeration and heating system with two-stage economizer of the utility model is provided with two air supply ports along the axial direction of the cylinder, and through the two-stage economizer for two intermediate air supply, the thermal performance of the system can be effectively improved and energy consumption can be saved.
附图说明Description of drawings
图1所示为本实用新型带两级经济器的螺杆压缩制冷供热***的示意图。Fig. 1 is a schematic diagram of the screw compression refrigeration and heating system with two-stage economizer of the present invention.
具体实施方式Detailed ways
以下结合附图和具体实施例对本实用新型作进一步详细说明。The present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本实用新型带两级经济器的螺杆压缩制冷供热***，包括:As shown in Figure 1, the utility model has the screw compression refrigeration heating system with two-stage economizer, comprising:
螺杆压缩机1、冷凝器2、第一节流阀3、第一经济器4、第二节流阀5、第二经济器6、第三节流阀7、蒸发器8；所述螺杆压缩机1的出口与冷凝器2的入口连接，冷凝器2的出口分成两路，一路经第一节流阀3与第一经济器4的换热管入口连接，另一路与第一经济器4的壳侧入口连接，第一经济器4的换热管出口与螺杆压缩机1靠近排气端的第一补气口连接；第一经济器4的壳侧出口分成两路，一路经第二节流阀5与第二经济器6的换热管入口连接，另一路与第二经济器6的壳侧入口连接，第二经济器6的换热管出口与螺杆压缩机1靠近吸气端的第二补气口连接；第二经济器6的壳侧出口经第三节流阀7与蒸发器8的入口连接，蒸发器8的出口与螺杆压缩机1的入口连接。Screw compressor 1,
需要说明的是，本实用新型中，所述螺杆压缩机上靠近吸气端开设有第一补气口、第二补气口沿所述螺杆压缩机的气缸轴向方向布置，并间隔预定距离，且在同一轴线上布置。It should be noted that, in the present invention, the screw compressor is provided with a first air supply port near the suction end, and the second air supply port is arranged along the axial direction of the cylinder of the screw compressor, and is separated by a predetermined distance and is arranged on the same axis.
***运行时，螺杆压缩机1排出的高温高压气体进入冷凝器2，与冷却介质热交换放出热量冷凝的液体分成两路，一路经第一节流阀3节流降压进入第一经济器4的换热管内，与另一路进入第一经济器4壳侧的液体热交换，吸热蒸发的气体流出第一经济器4的换热管，经螺杆压缩机1的第一补气口进入机体内；第一经济器4的壳侧过冷的液体分成两路，一路经第二节流阀5节流降压进入第二经济器6的换热管内，与另一路进入第二经济器6壳侧的液体热交换，吸热蒸发的气体流出第二经济器6的换热管出口，经螺杆压缩机1靠近吸气端的第二补气口进入机体内；第二经济器6壳侧过冷的液体经第三节流阀7节流降压进入蒸发器8，吸热蒸发的气体进入螺杆压缩机1，经初始段压缩的气体与第二补气口补充的气体混合，继续第二段压缩，与第一补气口补充的气体混合后继续压缩至排气口，排出螺杆压缩机1。When the system is running, the high-temperature and high-pressure gas discharged from the screw compressor 1 enters the
以上所述仅是本实用新型的优选实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。The above are only the preferred embodiments of the present invention. It should be noted that, for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention. These Improvement and modification should also be regarded as the protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020137977.9U CN211575580U (en) | 2020-01-21 | 2020-01-21 | Screw compression refrigeration heating system with two-stage economizer |
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| CN202020137977.9U CN211575580U (en) | 2020-01-21 | 2020-01-21 | Screw compression refrigeration heating system with two-stage economizer |
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| CN211575580U true CN211575580U (en) | 2020-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141044A (en) * | 2020-01-21 | 2020-05-12 | 天津商业大学 | Screw compression refrigeration heating system with two-stage economizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111141044A (en) * | 2020-01-21 | 2020-05-12 | 天津商业大学 | Screw compression refrigeration heating system with two-stage economizer |
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