CN204730502U - A kind of cryogenic refrigeration machine room air-conditioner - Google Patents
A kind of cryogenic refrigeration machine room air-conditioner Download PDFInfo
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- CN204730502U CN204730502U CN201520363395.1U CN201520363395U CN204730502U CN 204730502 U CN204730502 U CN 204730502U CN 201520363395 U CN201520363395 U CN 201520363395U CN 204730502 U CN204730502 U CN 204730502U
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Abstract
The utility model discloses a kind of cryogenic refrigeration machine room air-conditioner, comprise compressor, the condenser be connected by pipeline with the exhaust outlet of described compressor, the evaporimeter be connected by pipeline with the air entry of described compressor, described condenser is also connected with throttling arrangement by pipeline, and then be connected with described evaporimeter through throttling arrangement, pipeline between described condenser and described throttling arrangement is provided with low-temperature startup device, described low-temperature startup device comprises reservoir and the first control valve, described first control valve is arranged between described condenser and described reservoir.Application the utility model, can solve existing machine room air conditioner at low temperatures because back flow of refrigerant causes the technical problem that cannot start fast to condenser.
Description
Technical field
The utility model belongs to refrigeration and air-conditioning technique field, specifically, relates to a kind of air-conditioner, more particularly, relates to a kind of cryogenic refrigeration machine room air-conditioner.
Background technology
Machine room air conditioner is as refrigeration air conditioner, and be used in Various types of data process machine room, application is heat-producing device, requires uninterrupted refrigerating operaton 24 hours every days.The structure of existing machine room refrigeration air conditioner as shown in Figure 1, comprises indoor set and off-premises station, and indoor set is connected by connecting machine pipe 104 with off-premises station.The critical piece of indoor set has compressor 101, evaporimeter 114, evaporation fan 113, throttling arrangement 112, filter 110 and shows liquid mirror 111; Off-premises station mainly contains condenser 105 and condensation fan 106.During refrigeration air conditioner work, discharge higher pressure refrigerant gas in compressor 101, enter in outdoor condenser 105 through connecting machine pipe 4, under condenser fan 106 acts on, condensation becomes high pressure refrigerant liquid.High pressure refrigerant liquid enters indoor set through connecting machine pipe, afterwards through filter 110, show that liquid mirror 111 and throttling arrangement 112 enter in evaporimeter 114, heat absorption evaporation under the effect of evaporation fan 113, cold-producing medium enters in compressor 101 after becoming gaseous state again.Circulation like this, realizes refrigerating operaton, lowers the temperature to room air.Wherein, compressor 101 is core components of air-conditioning system, and it needs to operate within the scope of certain condensing pressure and evaporating pressure.If system pressure is too low, will low-voltage variation be realized, extend start-up time, wait after the high-low pressure difference between condensing pressure and evaporating pressure sets up, more normal startup optimization.
When outdoor environment temperature cross be low to moderate lower than indoor temperature time, if air-conditioner is in stopped status, refrigeration system stopped work, and the off-premises station to low temperature moves by the cold-producing medium in refrigeration system, and the time is longer moves more, until move to off-premises station completely.If now open compressor, may occur that compressor does not have cold-producing medium or short of refrigerant and occurs the situation of sustained low pressure after causing compressor start, causing can not normal boot-strap or damage compressor.
In addition, even if refrigeration air conditioner starts up under outdoor low temperature, because high and low pressure is not temporarily also set up, the suction side of compressor is in the state of finding time, and high-pressure is also very low, and exhaust side gas is condensation rapidly within the condenser, indoor set can't be flowed to immediately, but until high pressure height is enough to just form circulation after indoor set got back to by the cold-producing medium promoted in condenser to a certain extent, now refrigeration system is just real sets up high and low pressure, just can be in operation normally.Therefore, even if refrigeration air conditioner starts up at low temperatures, but in a period of time upon actuation can not normally, reliably stable operation, this also can cause damage to parts such as compressors, affects the service life of air-conditioner.
Summary of the invention
The purpose of this utility model is to provide a kind of cryogenic refrigeration machine room air-conditioner, solves existing machine room air conditioner at low temperatures because back flow of refrigerant causes the technical problem that cannot start fast to condenser.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of cryogenic refrigeration machine room air-conditioner, the condenser comprise compressor, being connected with the exhaust outlet of described compressor by pipeline, the evaporimeter be connected by pipeline with the air entry of described compressor, described condenser is also connected with throttling arrangement by pipeline, and then is connected with described evaporimeter through throttling arrangement; Pipeline between described condenser and described throttling arrangement is provided with low-temperature startup device, and described low-temperature startup device comprises reservoir and the first control valve, and described first control valve is arranged between described condenser and described reservoir.
Cryogenic refrigeration machine room air-conditioner as above, described low-temperature startup device also includes the second control valve, and described second control valve is arranged between described reservoir and described throttling arrangement.
Cryogenic refrigeration machine room air-conditioner as above, described first control valve and described second control valve are magnetic valve.
Cryogenic refrigeration machine room air-conditioner as above, described air-conditioner also includes filter, and described filter is arranged between described throttling arrangement and described low-temperature startup device.
Cryogenic refrigeration machine room air-conditioner as above, the pressure-detecting device that described air-conditioner also includes the condensing pressure detected on described condenser place pipeline and the discharge refrigerant of optionally being discharged by described compressor according to the testing result of described pressure-detecting device are to the discharge mechanism of described evaporimeter, described discharge mechanism one end is connected with the exhaust outlet of described compressor, and the other end is connected on the pipeline between described evaporimeter and described throttling arrangement.
Cryogenic refrigeration machine room air-conditioner as above, described discharge mechanism comprises the 3rd controlled valve and the offloading pipeline be connected in series.
Cryogenic refrigeration machine room air-conditioner as above, described 3rd controlled valve is magnetic valve.
Cryogenic refrigeration machine room air-conditioner as above, described 3rd controlled valve is normal-closed electromagnetic valve.
Compared with prior art, advantage of the present utility model and good effect are: by the pipeline between machine room air conditioner condenser and throttling arrangement being arranged the low-temperature startup device with reservoir, reservoir storage compartment cold-producing medium is utilized when air-conditioner normally works, cold-producing medium under stopped status is made can not all to move in the off-premises station residing for condenser, ensure have enough cold-producing mediums to carry out phase transformation in the indoor set at evaporimeter place during reset itself under outdoor low temperature environment, thus it is stable to set up refrigeration system rapidly, normal evaporating pressure and condensing pressure, ensure that refrigeration air conditioner normally starts at low temperatures.
After reading detailed description of the invention of the present utility model by reference to the accompanying drawings, other features of the present utility model and advantage will become clearly.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art machine room air conditioner;
Fig. 2 is the structural representation of the utility model cryogenic refrigeration machine room air-conditioner embodiment.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below with reference to drawings and Examples, the utility model is described in further detail.
Refer to Fig. 2, the figure shows the structural representation of the utility model cryogenic refrigeration machine room air-conditioner embodiment.
As shown in Figure 2, the cryogenic refrigeration machine room air-conditioner of this embodiment comprises indoor set and off-premises station, and indoor set is connected by connecting machine pipe 204 with off-premises station.Indoor set includes evaporimeter 214 that compressor 201 is connected by pipeline with the air entry of compressor, be positioned at throttling arrangement 212 that the evaporation fan 213 near evaporimeter 214 is connected with evaporimeter 214 entrance, be positioned at and show liquid mirror 211 and filter 210 between throttling arrangement 212 and condenser 205.Off-premises station includes condenser 205 and is positioned at the condensation fan 206 near condenser 205.Specifically, the entrance of condenser 205 is connected with the exhaust outlet of compressor 201 by connecting machine pipe 204.In addition, under realizing low temperature, normally start refrigeration, the low temperature refrigerating air conditioner of this embodiment is also provided with low-temperature startup device.Specifically, low-temperature startup device includes reservoir 208, first magnetic valve 207 and the second magnetic valve 209.Wherein, the first magnetic valve 207, as the inlet control valve of reservoir 208, is connected between the import of reservoir 208 and the outlet of condenser 205; Second magnetic valve 209, as the discharge control valve of reservoir 208, is connected between the outlet of reservoir 208 and filter 210.Cold-producing medium, after condenser 205 condensation, enters in reservoir 208 by the first magnetic valve 207; From reservoir 208 out after cold-producing medium through the second magnetic valve 209, enter filter 210 and filter, then through showing that liquid mirror 211 and throttling arrangement 212 enter into evaporimeter 214.
The object arranging low-temperature startup device is that under ensureing stopped status, when outdoor temperature is lower, the cold-producing medium in indoor set all can not move in off-premises station and go, and ensures that indoor set has enough cold-producing mediums, avoids the situation occurring the sustained low pressure after starting.
Specifically, configure low-temperature startup device in low temperature refrigerating air conditioner after, when air-conditioner normally works, the first magnetic valve 207 and the second magnetic valve 209 are all opened, and the cold-producing medium had more will be stored in reservoir 208.When air-conditioner is shut down, the first magnetic valve 207 and the second magnetic valve 209 are all closed, and maintain a certain amount of cold-producing medium in reservoir 208.Like this, such as, if in low temperature environment when air-conditioner start, the second magnetic valve 209 is first opened, and the first magnetic valve 207 Time Delay Opening, time delay is opened after a few second again.Open at the second magnetic valve 209, in process that the first magnetic valve 207 also cuts out, cold-producing medium in reservoir 208 just can enter into evaporimeter 214 through throttling arrangement 212, and enter compressor 201 become gaseous state mutually in evaporimeter 214 after, and then be discharged in condenser 205 by the compression of compressor 201.Thus, cold-producing medium can be made in whole refrigerating circuit to form persistent loop rapidly, so just can set up normal condensing pressure and the evaporating pressure of stable refrigeration system rapidly, ensure that refrigeration air conditioner also can normally start at low temperatures.
In addition, the low temperature refrigerating air conditioner of this embodiment is also provided with discharge mechanism and pressure-detecting device.Specifically, discharge mechanism comprises the 3rd magnetic valve 202 and offloading pipeline 203 that are connected in series.The entrance of whole discharge mechanism, also namely the entrance of the 3rd magnetic valve 202 is connected by pipeline with the exhaust outlet of compressor 201, the outlet of whole discharge mechanism is connected on the pipeline between evaporimeter 214 and throttling arrangement 212, is also namely connected with the pipeline in the exit of throttling arrangement 212.Pressure-detecting device is pressure switch or pressure sensor (not shown), is used for detecting the condensing pressure on the pipeline of condenser place.3rd magnetic valve 202 is as the controlled valve in discharge mechanism, the control of the control signal produced according to the testing result of pressure-detecting device will be controlled by, the size of the condensing pressure detected according to pressure-detecting device is opened or is closed, and realizes discharge mechanism and is controllably discharged in evaporimeter 214 cold-producing medium that compressor 201 is discharged.3rd magnetic valve 202 can be normal-open electromagnetic valve or normal-closed electromagnetic valve, but considers that this valve only just may use at low temperature environment, for reducing electric quantity consumption, preferably adopts normal-closed electromagnetic valve.
Specifically, when outdoor environment temperature is lower, high-pressure and the low pressure of air-conditioner are lower, if pressure is not in the safe range that compressor 201 allows, then compressor 201 easily damages.When air-conditioner works, pressure-detecting device detects condensing pressure in real time, and exports corresponding pressure signal.When the condensing pressure detected is lower than certain value, 3rd magnetic valve 202 is opened, compressor 201 exhaust outlet high-pressure refrigerant out arrives the outlet of throttling arrangement 212 through the 3rd magnetic valve 202 and offloading pipeline 203, enters in evaporimeter 214 together with the cold-producing medium of low pressure after throttling arrangement 212.Due to the neutralization of high-pressure refrigerant, improve evaporating pressure, correspondingly also improve the condensing pressure of system.Therefore; the pressure of whole refrigeration system can be improved rapidly by arranging discharge mechanism; guarantee refrigerated air-conditioning system energy safety, reliable, stable operation under outdoor low temperature condition, avoid the compressor fault that high frequent low-voltage variation causes, improve the service life of air-conditioner.
Above embodiment only in order to the technical solution of the utility model to be described, but not is limited; Although be described in detail the utility model with reference to previous embodiment, for the person of ordinary skill of the art, still the technical scheme described in previous embodiment can be modified, or equivalent replacement has been carried out to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the utility model technical scheme required for protection.
Claims (8)
1. a cryogenic refrigeration machine room air-conditioner, the condenser comprise compressor, being connected with the exhaust outlet of described compressor by pipeline, the evaporimeter be connected by pipeline with the air entry of described compressor, described condenser is also connected with throttling arrangement by pipeline, and then be connected with described evaporimeter through throttling arrangement, it is characterized in that, pipeline between described condenser and described throttling arrangement is provided with low-temperature startup device, described low-temperature startup device comprises reservoir and the first control valve, and described first control valve is arranged between described condenser and described reservoir.
2. cryogenic refrigeration machine room air-conditioner according to claim 1, it is characterized in that, described low-temperature startup device also includes the second control valve, and described second control valve is arranged between described reservoir and described throttling arrangement.
3. cryogenic refrigeration machine room air-conditioner according to claim 2, is characterized in that, described first control valve and described second control valve are magnetic valve.
4. cryogenic refrigeration machine room air-conditioner according to claim 1, it is characterized in that, described air-conditioner also includes filter, and described filter is arranged between described throttling arrangement and described low-temperature startup device.
5. cryogenic refrigeration machine room air-conditioner according to any one of claim 1 to 4, it is characterized in that, the pressure-detecting device that described air-conditioner also includes the condensing pressure detected on described condenser place pipeline and the discharge refrigerant of optionally being discharged by described compressor according to the testing result of described pressure-detecting device are to the discharge mechanism of described evaporimeter, described discharge mechanism one end is connected with the exhaust outlet of described compressor, and the other end is connected on the pipeline between described evaporimeter and described throttling arrangement.
6. cryogenic refrigeration machine room air-conditioner according to claim 5, is characterized in that, described discharge mechanism comprises the 3rd controlled valve and the offloading pipeline be connected in series.
7. cryogenic refrigeration machine room air-conditioner according to claim 6, is characterized in that, described 3rd controlled valve is magnetic valve.
8. cryogenic refrigeration machine room air-conditioner according to claim 7, is characterized in that, described 3rd controlled valve is normal-closed electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520363395.1U CN204730502U (en) | 2015-06-01 | 2015-06-01 | A kind of cryogenic refrigeration machine room air-conditioner |
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| CN201520363395.1U CN204730502U (en) | 2015-06-01 | 2015-06-01 | A kind of cryogenic refrigeration machine room air-conditioner |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444448A (en) * | 2015-12-23 | 2016-03-30 | 广东美的暖通设备有限公司 | Refrigeration system and control method thereof |
| CN106052218A (en) * | 2016-08-04 | 2016-10-26 | 唐玉敏 | Monofunctional throttling heat utilization system |
| CN106369719A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力电器股份有限公司 | Heat pump system, control method of heat pump system and air conditioner |
| CN107421152A (en) * | 2017-08-17 | 2017-12-01 | 珠海格力电器股份有限公司 | A kind of cold supply system and its control method |
| CN108050737A (en) * | 2017-12-13 | 2018-05-18 | 阳谷祥光铜业有限公司 | A kind of recirculated water heat-energy recovering apparatus and method |
| CN109489287A (en) * | 2018-12-29 | 2019-03-19 | 昆山璟赫机电工程有限公司 | A kind of condensation unit |
| CN112283988A (en) * | 2020-10-20 | 2021-01-29 | 广东申菱环境系统股份有限公司 | Evaporative cooling type water chilling unit and control method thereof |
| CN112344602A (en) * | 2020-09-22 | 2021-02-09 | 广东海悟科技有限公司 | Air conditioning system for improving low-temperature operation reliability and control method thereof |
| CN112413860A (en) * | 2020-11-12 | 2021-02-26 | 珠海格力电器股份有限公司 | Control method and system for air conditioning system of machine room |
-
2015
- 2015-06-01 CN CN201520363395.1U patent/CN204730502U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444448A (en) * | 2015-12-23 | 2016-03-30 | 广东美的暖通设备有限公司 | Refrigeration system and control method thereof |
| CN105444448B (en) * | 2015-12-23 | 2018-02-06 | 广东美的暖通设备有限公司 | refrigeration system and its control method |
| CN106052218A (en) * | 2016-08-04 | 2016-10-26 | 唐玉敏 | Monofunctional throttling heat utilization system |
| CN106369719A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力电器股份有限公司 | Heat pump system, control method of heat pump system and air conditioner |
| CN107421152A (en) * | 2017-08-17 | 2017-12-01 | 珠海格力电器股份有限公司 | A kind of cold supply system and its control method |
| CN108050737A (en) * | 2017-12-13 | 2018-05-18 | 阳谷祥光铜业有限公司 | A kind of recirculated water heat-energy recovering apparatus and method |
| CN109489287A (en) * | 2018-12-29 | 2019-03-19 | 昆山璟赫机电工程有限公司 | A kind of condensation unit |
| CN112344602A (en) * | 2020-09-22 | 2021-02-09 | 广东海悟科技有限公司 | Air conditioning system for improving low-temperature operation reliability and control method thereof |
| CN112283988A (en) * | 2020-10-20 | 2021-01-29 | 广东申菱环境系统股份有限公司 | Evaporative cooling type water chilling unit and control method thereof |
| CN112413860A (en) * | 2020-11-12 | 2021-02-26 | 珠海格力电器股份有限公司 | Control method and system for air conditioning system of machine room |
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