CN205580020U - Direct expansion formula magnetic suspension subway air conditioning system - Google Patents
Direct expansion formula magnetic suspension subway air conditioning system Download PDFInfo
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- CN205580020U CN205580020U CN201620306515.9U CN201620306515U CN205580020U CN 205580020 U CN205580020 U CN 205580020U CN 201620306515 U CN201620306515 U CN 201620306515U CN 205580020 U CN205580020 U CN 205580020U
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Abstract
The utility model relates to a direct expansion formula magnetic suspension subway air conditioning system, the air conditioning system refrigeration circuit who becomes including the compressor that connects gradually, condenser, electronic expansion valve and evaporator assembly, formation compressor bypass cooling circuit is connected to compressor and condenser, works as the operating temperature of compressor reaches the default, then switches on compressor bypass cooling circuit to the over heating issue in the compressor working process for the compressor cooling, thereby is solved through compressor bypass cooling circuit flow direction compressor to the partial refrigerant that makes condenser output, improves air conditioning system's performance.
Description
Technical field
This utility model relates to air conditioning system technical field, particularly to a kind of direct-evaporation-type magnetic suspension subway's air-conditioning system.
Background technology
All kinds of air-conditionings are commercially widely used, and common air conditioning system is all the refrigerant gas of the low-temp low-pressure being sucked vaporizer output by air conditioning unit compressor, exports condenser by exhaustor after compressing it into the refrigerant gas of High Temperature High Pressure.Compressor of air conditioner is in the case of operating mode complexity or long time continuous working, the situation that return-air is overheated easily occurs, cause compressor can not normally use because coil is overheated, heat pump performance is had a negative impact, and compressor operating is degrading can reduce service life.
Summary of the invention
The purpose of this utility model is to provide a kind of direct-evaporation-type magnetic suspension subway's air-conditioning system for the deficiencies in the prior art, in order to solves the problem of overheat of compressor in air conditioning system work process, improves the performance of air conditioning system.
For achieving the above object, this utility model adopts the following technical scheme that
A kind of direct-evaporation-type magnetic suspension subway's air-conditioning system is provided, air conditioning system refrigerating circuit including the compressor being sequentially connected with, condenser, electric expansion valve and vaporizer composition, described compressor and condenser connect formation compressor bypass cooling circuit, when the operating temperature of described compressor reaches preset value, then turn on described compressor bypass cooling circuit, so that flowing to the refrigerant flow direction compressor of compressor bypass cooling circuit through condenser, for cooling compressor.
Wherein, described compressor bypass cooling circuit includes sensor and cooling valve, and described sensor detects the operating temperature of described compressor, and cooling valve is arranged in compressor bypass cooling circuit and controls the on/off of compressor bypass cooling circuit.
Wherein, described cooling valve be described cooling valve be hydrojet electromagnetic valve.
Wherein, including economizer, described economizer includes the first path and alternate path, and described first paths connected in series is in compressor bypass cooling circuit, described alternate path is connected on air conditioning system refrigerating circuit, and described first path is all connected with the outfan of condenser with the input of alternate path.
Wherein, when described compressor bypass cooling circuit turns on, actuating coil and frequency convertor system to compressor are lowered the temperature.
Wherein, at least two groups of described vaporizer, accesses described air conditioning system refrigerating circuit after parallel connection.
Wherein, between outfan and the input of compressor of described vaporizer, connection has gas-liquid separator.
Wherein, described compressor is magnetic suspension compressor.
Wherein, described condenser is shell and tube condenser.
The beneficial effects of the utility model are: this direct-evaporation-type magnetic suspension subway's air-conditioning system uses compressor, condenser, sensor and the compressor bypass cooling circuit of cooling valve composition, bypass valve is opened when overheat of compressor, conducting compressor bypass cooling circuit, thus compressor operating coil and frequency convertor system are cooled down, make compressor recover normal working temperature.Have only in original air conditioning system refrigerating circuit, increase a bypass cooling circuit, the part of refrigerant that condenser exports is drained into compressor, just can solve overheat of compressor problem.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the schematic diagram of direct-evaporation-type magnetic suspension subway's air-conditioning system of the present utility model.
Detailed description of the invention
With the following Examples this utility model is further described.
As shown in Figure 1, direct-evaporation-type magnetic suspension subway's air-conditioning system of the present utility model, compressor be magnetic suspension compressor 1, condenser be shell and tube condenser 3, magnetic suspension compressor 1, shell and tube condenser 3, electric expansion valve 13 and vaporizer 14 are sequentially connected with composition air conditioning system refrigerating circuit, and are in turn connected to form compressor bypass cooling circuit by sensor 6, magnetic suspension compressor 1, shell and tube condenser 3, cooling valve (hydrojet electromagnetic valve) 7.The air conditioning system using magnetic suspension compressor 1 need not use refrigeration oil, will not adhere to oil film, can improve the heat exchange efficiency of air conditioning system inside the heat exchanger tube of shell and tube condenser 3 and vaporizer 14.
Being connected with economizer 8 in this air conditioning system, the first path 81 of this economizer 8 is connected in compressor bypass cooling circuit, and the first path 81 input connects after cooling valve 7 is connected and is connected with the outfan of shell and tube condenser 3, and outfan is connected with sensor 6；The alternate path 82 of this economizer 8 is connected in air conditioning system refrigerating circuit, and alternate path 82 input is connected with the outfan of shell and tube condenser 3, and outfan is connected with condensing pressure switch 9.Sensor 6 in compressor bypass cooling circuit is for detecting the operating temperature of magnetic suspension compressor 1, and cooling valve 7 is for controlling conducting and the cut-off of compressor bypass cooling circuit.Sensor 6 detects that the operating temperature of magnetic suspension compressor 1 reaches preset value, i.e. magnetic suspension compressor 1 is overheated, turns on cooling valve 7, turns on compressor bypass cooling circuit；Or sensor 6 detects that the operating temperature of magnetic suspension compressor 1 reaches preset value and turns on the hydrojet electromagnetic valve 4 as cooling valve, turns on compressor bypass cooling circuit.
Refrigerant liquid from shell and tube condenser 3 is divided into two-way, one tunnel forms the gas-liquid shape mixture of middle temperature low pressure after supercooling valve 7 in the first path 81 and enters compressor bypass cooling circuit, when flowing through magnetic suspension compressor 1, overheated compressor operating coil and frequency convertor system are cooled down, magnetic suspension compressor 1 is made to recover normal working temperature, sensor 6 detects that the operating temperature of magnetic suspension compressor 1 returns to normal value, it is shut off cooling down valve 7, disconnects compressor bypass cooling circuit.Another road in alternate path 82 heat exchange thus increase the degree of supercooling of refrigerant liquid flowing to condensing pressure switch 9, cold-producing medium enters electric expansion valve 13 after flowing through switching ball 10, device for drying and filtering 11 and the ball valve 12 containing refrigerant charging geat, electric expansion valve 13 is according to pre-set programs adjusting refrigerant flow rate, thus controls to enter the liquid supply rate of vaporizer 14.In order to ensure in the case of refrigerant flow is relatively big can uniform separatory, two groups of vaporizers 14 arranged side by side are set, pass through two electric expansion valve 13 feed flows respectively.Cold-producing medium by electric expansion valve 13 throttling cooling, after shunt head 141 in evaporation coil 142 with air heat-exchange, thus completely vaporize as low-pressure steam.Air after heat exchange exports in external environment condition by centrifugal blower 15, produce refrigeration, cold-producing medium after heat exchange becomes low-pressure steam and returns to magnetic suspension compressor 1, it is compressed into the refrigerant gas of High Temperature High Pressure by magnetic suspension compressor 1 again and exports shell and tube condenser 3, cold-producing medium after shell and tube condenser 3 output cooling condensation, so recycles the kind of refrigeration cycle just completing air conditioning system.
Low-pressure steam vaporization in order to prevent vaporizer 14 from exporting is incomplete, liquid refrigerants is caused to enter magnetic suspension compressor 1, Wet Compression is caused to damage magnetic suspension compressor 1, a gas-liquid separator 16 is connected between the outfan and the input of magnetic suspension compressor 1 of vaporizer 14, thus ensure in the case of working conditions change is excessive, enter the refrigerant gas of magnetic suspension compressor 1 also without liquid parts.Outfan at magnetic suspension compressor 1 has high-voltage switch gear 2, and input has low tension switch 5, and the outfan at shell and tube condenser 3 has condensing pressure switch 9.Three pressure switches pressure when detecting system is run is the most normal, the opening pressure switch when pressure is beyond allowed band, wherein the effect of low tension switch 5 does not has cold-producing medium to run and damage compressor in being mainly anti-locking system, the effect of high-voltage switch gear 2 is mainly in anti-locking system cold-producing medium, and too much and shell and tube condenser 3 dispels the heat bad, and damage magnetic suspension compressor 1 or explosion pipeline, the effect of condensing pressure switch 9 mainly prevents shell and tube condenser 3 operation irregularity, exports and condenses not exclusively to the cold-producing medium of vaporizer 14.
Finally should be noted that; above example is only in order to illustrate the technical solution of the utility model; rather than the restriction to this utility model protection domain; although having made to explain to this utility model with reference to preferred embodiment; it will be understood by those within the art that; the technical solution of the utility model can be modified or equivalent, without deviating from the spirit and scope of technical solutions of the utility model.
Claims (9)
1. direct-evaporation-type magnetic suspension subway's air-conditioning system, air conditioning system refrigerating circuit including the compressor being sequentially connected with, condenser, electric expansion valve and vaporizer composition, it is characterized in that, described compressor and condenser connect formation compressor bypass cooling circuit, when the operating temperature of described compressor reaches preset value, then turn on described compressor bypass cooling circuit, so that flowing to the refrigerant flow direction compressor of compressor bypass cooling circuit through condenser, for cooling compressor.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, it is characterized in that: described compressor bypass cooling circuit includes sensor and cooling valve, described sensor detects the operating temperature of described compressor, and cooling valve is arranged in compressor bypass cooling circuit and controls the on/off of compressor bypass cooling circuit.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 2, is characterized in that: described cooling valve is hydrojet electromagnetic valve.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1 and 2, it is characterized in that: include economizer, described economizer includes the first path and alternate path, described first paths connected in series is in compressor bypass cooling circuit, described alternate path is connected on air conditioning system refrigerating circuit, and described first path is all connected with the outfan of condenser with the input of alternate path.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, is characterized in that: during the conducting of described compressor bypass cooling circuit, actuating coil and frequency convertor system to compressor are lowered the temperature.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, is characterized in that: at least two groups of described vaporizer, accesses described air conditioning system refrigerating circuit after parallel connection.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, is characterized in that: connecting between outfan and the input of compressor of described vaporizer has gas-liquid separator.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, is characterized in that: described compressor is magnetic suspension compressor.
Direct-evaporation-type magnetic suspension subway's air-conditioning system the most according to claim 1, is characterized in that: described condenser is shell and tube condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306515.9U CN205580020U (en) | 2016-04-13 | 2016-04-13 | Direct expansion formula magnetic suspension subway air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306515.9U CN205580020U (en) | 2016-04-13 | 2016-04-13 | Direct expansion formula magnetic suspension subway air conditioning system |
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| CN205580020U true CN205580020U (en) | 2016-09-14 |
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| CN201620306515.9U Active CN205580020U (en) | 2016-04-13 | 2016-04-13 | Direct expansion formula magnetic suspension subway air conditioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906812A (en) * | 2017-10-16 | 2018-04-13 | 青岛海尔空调电子有限公司 | A kind of air-conditioner set compressor cooling control method and system |
| CN108253668A (en) * | 2018-02-27 | 2018-07-06 | 广东西屋康达空调有限公司 | A kind of electromagnetic levitation type air-conditioning system |
| CN110094818A (en) * | 2019-06-10 | 2019-08-06 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of data center's compound air-conditioning system and its control method |
| CN112923460A (en) * | 2021-02-26 | 2021-06-08 | 青岛海尔空调电子有限公司 | Magnetic suspension direct expansion type air conditioning unit |
-
2016
- 2016-04-13 CN CN201620306515.9U patent/CN205580020U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906812A (en) * | 2017-10-16 | 2018-04-13 | 青岛海尔空调电子有限公司 | A kind of air-conditioner set compressor cooling control method and system |
| CN108253668A (en) * | 2018-02-27 | 2018-07-06 | 广东西屋康达空调有限公司 | A kind of electromagnetic levitation type air-conditioning system |
| CN110094818A (en) * | 2019-06-10 | 2019-08-06 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of data center's compound air-conditioning system and its control method |
| CN112923460A (en) * | 2021-02-26 | 2021-06-08 | 青岛海尔空调电子有限公司 | Magnetic suspension direct expansion type air conditioning unit |
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