CN104034075A - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN104034075A CN104034075A CN201310074169.7A CN201310074169A CN104034075A CN 104034075 A CN104034075 A CN 104034075A CN 201310074169 A CN201310074169 A CN 201310074169A CN 104034075 A CN104034075 A CN 104034075A
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- condenser
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Abstract
The invention discloses an air-conditioning system. The air-conditioning system comprises a compressor, a condenser, an evaporator, a throttle mechanism, a condenser by-pass pipeline, a low-temperature starting module and a controller which is connected with the compressor, and the controller is used for controlling the compressor. An inlet of the condenser is connected with an exhaust port of the compressor, an outlet of the evaporator is connected with an air inlet of the compressor, and an outlet of the throttle mechanism is connected with an inlet of the evaporator. A first end of the condenser by-pass pipeline is communicated with an inlet of the condenser, and a second end of the condenser by-pass pipeline is communicated with an outlet of the condenser. Besides, the low-temperature starting module comprises a liquid storage pot and a valve, the liquid storage pot is connected with an inlet of the throttle mechanism and an outlet of the condenser, and the valve is arranged on the condenser by-pass pipeline. The air-conditioning system can be started and reliably operate in the low-temperature environment, and the application range of the air-conditioning system is greatly widened.
Description
Technical field
The present invention relates to refrigeration technology field, particularly a kind of air-conditioning system for machine room.
Background technology
In field of air conditioning, precise machine room air conditioner is a kind of air-conditioner of the series special that requires all-weather safety reliability service.In the higher area of latitude, its, outside air temperature was very low in winter, and at this moment precise machine room air conditioner still needs to carry out refrigeration demand, and now for general refrigerant system design, unit possibly cannot start, can not running refrigerating.
In industry, there is machine room field of air conditioning producer to develop a kind of cold-starting module, although can solve cold-starting and operation problem at present, but its range of application relative narrower, can only accomplish start and move in-35 ° of situations, when temperature is low again, unit cannot start, can not running refrigerating.
The shortcoming that prior art exists is that existing air conditioner in machine room range of application relative narrower, for the situation of ultralow temperature, as-40 DEG C of outdoor environment temperatures, cannot ensure that unit can start and reliability service.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, the present invention proposes a kind of air-conditioning system for machine room, can under low temperature environment, start and reliability service, widened the temperature range of unit operation.
For achieving the above object, the air-conditioning system that embodiments of the invention propose, comprising: compressor; Condenser, the entrance of described condenser is connected with the exhaust outlet of described compressor; Evaporimeter, the outlet of described evaporimeter is connected with the air inlet of described compressor; Throttle mechanism, the outlet of described throttle mechanism is connected with the entrance of described evaporimeter; Condenser bypass pipeline, the first end of described condenser bypass pipeline is communicated with the entrance of described condenser, and the second end of described condenser bypass pipeline is communicated with the outlet of described condenser; Cold-starting module, described cold-starting module comprises fluid reservoir and valve, and described fluid reservoir is connected with the entrance of described throttle mechanism and the outlet of described condenser, and described valve is arranged on condenser bypass pipeline; Controller, described controller is connected with described compressor, and described controller is in order to control described compressor.
According to the air-conditioning system of the embodiment of the present invention, arrange lower than system at the pressure of system minimum pressure time control condenser bypass pipeline connecting system, thereby improve the pressure of system, ensure that compressor can start at lower outdoor environment temperature, and make unit reliability service under low ambient temperature more, greatly widen its range of application.And, can extend service life of compressor, avoid compressor damage.
In one embodiment of the invention, described valve is magnetic valve, and the second end of described condenser bypass pipeline is connected with described fluid reservoir.
In another embodiment of the present invention, described valve is magnetic valve, and the second end of described condenser bypass pipeline is connected between described fluid reservoir and the outlet of described condenser.
Wherein, described controller is controlled the break-make of described condenser bypass pipeline to described magnetic valve according to the pressure between the exhaust outlet of described compressor and the entrance of described throttle mechanism.
In yet another embodiment of the present invention, described valve is condensation pressure regulation valve, and described condensation pressure regulation valve comprises three interfaces, the first interface of described condensation pressure regulation valve is communicated with the entrance of described condenser, the second interface of described condensation pressure regulation valve is communicated with the outlet of described condenser, and the 3rd interface of described condensation pressure regulation valve is communicated with described fluid reservoir.And, described condensation pressure regulation valve controls described first interface and cuts out in the time that the pressure of described the second interface or the 3rd interface is more than or equal to preset value, and it is open-minded in the time that the pressure of described the second interface or the 3rd interface is less than described preset value, to control described first interface.
Wherein, between the second end of described condenser bypass pipeline and described fluid reservoir, be provided with the first check valve; and described the first check valve is at the second end along described condenser bypass pipeline to conducting in the direction of described fluid reservoir, and refrigerant migration is to outdoor pusher side when preventing compressor emergency shutdown.
In one embodiment of the invention, between the outlet of described condenser and described fluid reservoir, be provided with the second check valve, and the conducting in the direction that exports to described fluid reservoir along described condenser of described the second check valve.
In an embodiment of the present invention, on described fluid reservoir, be also provided with safety valve.
In one embodiment of the invention, between described fluid reservoir and described throttle mechanism, be provided with filter, between described filter and described throttle mechanism, be provided with the second magnetic valve.
In one embodiment of the invention, described air-conditioning system also comprises: the detector that detects the pressure between the exhaust outlet of described compressor and the entrance of described throttle mechanism, described controller is connected with described detector with described magnetic valve respectively, when the pressure that described controller detects at described detector is more than or equal to preset value, control described closed electromagnetic valve, and the pressure detecting at described detector is controlled described solenoid valve conduction while being less than described preset value.Wherein, preset value can be the minimum pressure value of system setting.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is the connection diagram of each assembly in air-conditioning system according to an embodiment of the invention;
Fig. 2 is the connection diagram of each assembly in air-conditioning system in accordance with another embodiment of the present invention; And
Fig. 3 is the connection diagram of each assembly in the air-conditioning system of another embodiment according to the present invention.
Reference numeral:
Compressor 1, condenser 2, fluid reservoir 3, throttle mechanism 4, evaporimeter 5, valve 6, magnetic valve 2000, detector 7, controller 8, condensation pressure regulation valve 9, the first check valve 10, the second check valve 11, safety valve 12, filter 13, the second magnetic valve 14, the first end A of condenser bypass pipeline 100, condenser bypass pipeline 100 and the second end B, cold-starting module 200, the 3rd interface c of the first interface a of condensation pressure regulation valve 9, the second interface b of condensation pressure regulation valve 9 and condensation pressure regulation valve 9.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
With reference to description and accompanying drawing below, these and other aspects of embodiments of the invention will be known.In these descriptions and accompanying drawing, specifically disclose some specific implementations in embodiments of the invention, represent some modes of the principle of implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise all changes, amendment and the equivalent within the scope of spirit and the intension that falls into additional claims.
The air-conditioning system for machine room proposing according to the embodiment of the present invention is described with reference to the accompanying drawings.
As shown in Figure 1, the air-conditioning system that one embodiment of the invention proposes comprises compressor 1, condenser 2, cold-starting module 200, throttle mechanism 4, evaporimeter 5, condenser bypass pipeline 100 and controller 8.Wherein, cold-starting module 200 comprises valve 6 and fluid reservoir 3.And in this embodiment, valve 6 can be magnetic valve 2000.
Wherein, the entrance of condenser 2 is connected with the exhaust outlet of compressor 1, and the outlet of evaporimeter 5 is connected with the air inlet of compressor 1, and the outlet of throttle mechanism 4 is connected with the entrance of evaporimeter 5, and fluid reservoir 3 is connected with the outlet of condenser 2 with the entrance of throttle mechanism 4 respectively.
In the present embodiment, as shown in Figure 1, the first end A of condenser bypass pipeline 100 is communicated with the entrance of condenser 2, and the second end B of condenser bypass pipeline 100 is communicated with the outlet of condenser 2, and the second end B of condenser bypass pipeline 100 is connected with fluid reservoir 3.Wherein, valve 6 is that magnetic valve 2000 is arranged on condenser bypass pipeline 100.And controller 8 is connected with compressor 1, controller 8 is in order to control compressor 1.
And, the air-conditioning system of the present embodiment also comprises detector 7, detector 7 is the pressure of air-conditioning system for detection of the pressure between the exhaust outlet of compressor 1 and the entrance of throttle mechanism 4, controller 8 is connected with detector 7 with magnetic valve 2000 respectively, and the electromagnetic pressure control valve 2000 detecting according to detector 7.Particularly, in an embodiment of the present invention, when the pressure that controller 8 detects at detector 7 is more than or equal to preset value, control magnetic valve 2000 and close, and the pressure detecting at detector 7 is controlled magnetic valve 2000 conductings while being less than preset value.Wherein, preset value can be the minimum pressure value of system setting.
That is to say, controller 8 is controlled the break-make of condenser bypass pipeline 100 to magnetic valve 2000 according to the pressure between the exhaust outlet of compressor 1 and the entrance of throttle mechanism 4.
In one embodiment of the invention, as shown in Figure 1, between the second end B of condenser bypass pipeline 100 and fluid reservoir 3, be provided with the first check valve 10, and the first check valve 10 at the second end B along condenser bypass pipeline 100 to conducting in the direction of fluid reservoir 3.
In the present embodiment, as shown in Figure 1, between the outlet of condenser 2 and fluid reservoir 3, be provided with the second check valve 11, and the conducting in the direction that exports to fluid reservoir 3 along condenser 2 of the second check valve 11.And fluid reservoir 3 is provided with input adapter, discharge conection and internal thread interface, safety valve 12 is installed on fluid reservoir 3 internal thread interfaces, and speech, is also provided with safety valve 12 on fluid reservoir 3.
It is all extremely outdoor pusher sides of refrigerant migration while preventing compressor emergency shutdown that the first check valve 10 and the second check valve 11 are wherein set.
Further, in an embodiment of the present invention, as shown in Figure 1, between fluid reservoir 3 and throttle mechanism, 4 are provided with filter 13, are provided with the second magnetic valve 14 between filter 13 and throttle mechanism 4.Wherein, by filter 13 is set, ensure by the clean free from admixture of fluid of the second magnetic valve 14.
In sum, in an embodiment of the present invention, as shown in Figure 1, after magnetic valve 2000 conductings, in above-mentioned air-conditioning system, the circulating direction of fluid is: (1) compressor 1 → condenser 2 → the second check valve 11 → fluid reservoir 3 → filter 13 → the second magnetic valve 14 → throttle mechanism 4 → evaporimeter 5 → compressors; (2) compressor 1 → magnetic valve 2000 → the first check valve 10 → fluid reservoir 3 → the second filter 13 → the second magnetic valve 14 → throttle mechanism 4 → evaporimeter 5 → compressors.
Wherein, the first check valve 10, magnetic valve 2000, fluid reservoir 3, the second filter 13, the second magnetic valve 14 and the second check valve 11, safety valve 12 form cold-starting module 200.Cold-starting module 200 is when compressor 1 is shut down, by the effect of the second check valve 11, the first check valve 10 and magnetic valve 2000, can store some cold-producing mediums in 200 li of cold-starting modules, in the time that compressor 1 is opened, the second magnetic valve 14 being connected on liquid pipe is opened conducting, and cold-producing medium enters evaporimeter 5 in a disguised form for gaseous state enters compressor 1 by for example expansion valve of throttle mechanism 4, the high-pressure that while detector 7 detects air-conditioning system is the pressure between the exhaust outlet of compressor 1 and the entrance of throttle mechanism 4, if high-pressure is lower than preset value, controller 8 is controlled magnetic valve 2000 and is opened conducting, 100 conductings of condenser bypass pipeline, the part high pressure-temperature gaseous refrigerant that compressor 1 is discharged is bypassed to fluid reservoir 3, improve rapidly fluid reservoir 3 internal pressures, the low temperature liquid refrigerant mixed that while gaseous refrigerant and fluid reservoir are 3 li, the temperature, pressure of liquid refrigerant is improved, cold-producing medium is got back to evaporimeter 5 fast, thereby compressor 1 is normally started under low temperature condition.Along with pressure gos up, the high-pressure detecting when detector 7 gos up to being more than or equal to preset value, and controller 8 controls magnetic valve 2000 and cuts out, and condenser bypass pipeline 100 is closed.In running, if run into the reduction of off-premises station temperature or strong wind interference etc., make condenser 2 heat transmit aggravation, the on high-tension side pressure of air-conditioning system also can reduce, in the time that detector 7 detects that the pressure of system high pressure side is brought down below preset value, controller 8 is controlled magnetic valve 2000 and is opened conducting, make the part high pressure-temperature gaseous refrigerant that compressor 1 is discharged be bypassed to fluid reservoir 3, with the refrigerant mixed in fluid reservoir 3, improve temperature and the pressure of cold-producing medium, thereby the high pressure that improves system, normally moves compressor 1, ensure unit reliability service.Go up when being more than or equal to preset value when detector 7 detects pressure, controller 8 controls magnetic valve 2000 and cuts out.
In another embodiment of the present invention, as shown in Figure 2, valve 6 can be also magnetic valve 2000, and the second end B of condenser bypass pipeline 100 is connected between fluid reservoir 3 and the outlet of condenser 2.I.e. speech, open after conducting at magnetic valve 2000, can also be exported to the pipeline between fluid reservoir 3 to condenser 2 by the first check valve 10, magnetic valve 2000 bypass from the gaseous refrigerant of compressor 1 part high pressure-temperature out, after mixing with condenser 2 liquid refrigerant out, enter fluid reservoir 3, make equally temperature, the pressure of fluid reservoir 3 liquid refrigerants improve, make cold-producing medium get back to fast evaporimeter 5, thereby compressor 1 is normally started under low temperature condition.Can also be exported to the pipeline between fluid reservoir 3 by the first check valve 10, magnetic valve 2000 bypass to condenser 2 from the gaseous state refrigeration of compressor 1 part high pressure-temperature out, therefore do not limit the position of interface, can make equally the normal startup of compressor bank and reliability service.Wherein, the first check valve 10, magnetic valve 2000, fluid reservoir 3, the second filter 13, the second magnetic valve 14 and safety valve 12 form cold-starting module 200.
In yet another embodiment of the present invention, as shown in Figure 3, valve 6 is condensation pressure regulation valve 9, and condensation pressure regulation valve 9 comprises three interfaces, the first interface a of condensation pressure regulation valve 9 is communicated with the entrance of condenser 2, the second interface b of condensation pressure regulation valve 9 is communicated with the outlet of condenser 2, and the 3rd interface c of condensation pressure regulation valve 9 is communicated with fluid reservoir 3.And condensation pressure regulation valve 9 controls first interface a and cuts out in the time that the pressure of the second interface b or the 3rd interface c is more than or equal to preset value, and it is open-minded in the time that the pressure of the second interface b or the 3rd interface c is less than preset value, to control first interface a.
Wherein, condensation pressure regulation valve 9 is mechanical controling parts; it has three interfaces; first interface a connects the entrance of condenser 2 by pipeline; the second interface b connects the outlet of condenser 2; the 3rd interface c connects fluid reservoir 3, in order to prevent that refrigerant migration in compressor emergency shutdown fluid reservoir from, to condenser, increasing by the first check valve 10 between the 3rd interface c and fluid reservoir 3.When unit is during at cold-starting, condensation pressure regulation valve 9 can induction the second interface b or its detected pressures position differences of the 3rd interface c(different size) pressure, when when pressure be set be preset value, first interface a can be open-minded according to pressure condition, the gaseous coolant of by-passing part HTHP, be mixed to fluid reservoir 3 with the supercooled liquid refrigerant from condenser 2, improve rapidly the interior refrigerant temperature pressure of fluid reservoir 3, drive refrigerant by throttle mechanism 4, evaporimeter 5, compressor 1 is normally started at outdoor low temperature environment temperature.In running, along with outdoor environment temperature reduces, condensing pressure also can reduce, when pressure decreased is during in the preset value of condensation pressure regulation valve 9, first interface a can open, the gaseous coolant of by-passing part HTHP, be mixed to fluid reservoir 3 with the supercooled liquid refrigerant from condenser 2, improve rapidly the interior refrigerant temperature pressure of fluid reservoir 3, drive refrigerant by throttle mechanism 4, evaporimeter 5, make compressor 1 reliability service in allowed band.When pressure gos up, the first interface a of condensation pressure regulation valve 9 closes in proportion, until preset value, first interface a closes completely, now only has the second interface b, the 3rd interface c conducting.Wherein, the first check valve 10, condensation pressure regulation valve 9, fluid reservoir 3, the second filter 13, the second magnetic valve 14 and safety valve 12 form cold-starting module 200.
According to the air-conditioning system of the embodiment of the present invention, make the conducting of condenser bypass pipeline during lower than the minimum pressure of system setting at the pressure of system, make from the gaseous refrigerant of compressor part high pressure-temperature out and from condenser low temperature liquid refrigerant mixed out, thereby improve the temperature and pressure of the cold-producing medium of system high pressure side, ensure that compressor can start at lower outdoor environment temperature, and make unit reliability service under low ambient temperature more, meet the demand of the even extremely cold weather machine room lower air conditioner refrigerating of cold district, greatly widened its range of application.And, can extend service life of compressor, avoid compressor damage.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (11)
1. an air-conditioning system, is characterized in that, comprising:
Compressor;
Condenser, the entrance of described condenser is connected with the exhaust outlet of described compressor;
Evaporimeter, the outlet of described evaporimeter is connected with the air inlet of described compressor;
Throttle mechanism, the outlet of described throttle mechanism is connected with the entrance of described evaporimeter;
Condenser bypass pipeline, the first end of described condenser bypass pipeline is communicated with the entrance of described condenser, and the second end of described condenser bypass pipeline is communicated with the outlet of described condenser;
Cold-starting module, described cold-starting module comprises fluid reservoir and valve, and described fluid reservoir is connected with the entrance of described throttle mechanism and the outlet of described condenser, and described valve is arranged on condenser bypass pipeline;
Controller, described controller is connected with described compressor, and described controller is in order to control described compressor.
2. air-conditioning system as claimed in claim 1, is characterized in that, described valve is magnetic valve, and the second end of described condenser bypass pipeline is connected between described fluid reservoir and the outlet of described condenser.
3. air-conditioning system as claimed in claim 1, is characterized in that, described valve is magnetic valve, and the second end of described condenser bypass pipeline is connected with described fluid reservoir.
4. air-conditioning system as claimed in claim 2 or claim 3, is characterized in that, described controller is controlled the break-make of described condenser bypass pipeline to described magnetic valve according to the pressure between the exhaust outlet of described compressor and the entrance of described throttle mechanism.
5. air-conditioning system as claimed in claim 1, it is characterized in that, described valve is condensation pressure regulation valve, and described condensation pressure regulation valve comprises three interfaces, the first interface of described condensation pressure regulation valve is communicated with the entrance of described condenser, the second interface of described condensation pressure regulation valve is communicated with the outlet of described condenser, and the 3rd interface of described condensation pressure regulation valve is communicated with described fluid reservoir.
6. air-conditioning system as claimed in claim 1, it is characterized in that, between the second end of described condenser bypass pipeline and described fluid reservoir, be provided with the first check valve, and described the first check valve at the second end along described condenser bypass pipeline to conducting in the direction of described fluid reservoir.
7. air-conditioning system as claimed in claim 3, is characterized in that, between the outlet of described condenser and described fluid reservoir, is provided with the second check valve, and the conducting in the direction that exports to described fluid reservoir along described condenser of described the second check valve.
8. air-conditioning system as claimed in claim 1, is characterized in that, is also provided with safety valve on described fluid reservoir.
9. air-conditioning system as claimed in claim 1, is characterized in that, between described fluid reservoir and described throttle mechanism, is provided with filter, between described filter and described throttle mechanism, is provided with the second magnetic valve.
10. air-conditioning system as claimed in claim 2 or claim 3, it is characterized in that, also comprise the detector that detects the pressure between the exhaust outlet of described compressor and the entrance of described throttle mechanism, described controller is connected with described detector with described magnetic valve respectively, when the pressure that described controller detects at described detector is more than or equal to preset value, control described closed electromagnetic valve, and the pressure detecting at described detector is controlled described solenoid valve conduction while being less than described preset value.
11. air-conditioning systems as claimed in claim 5, it is characterized in that, described condensation pressure regulation valve controls described first interface and cuts out in the time that the pressure of described the second interface or the 3rd interface is more than or equal to preset value, and it is open-minded in the time that the pressure of described the second interface or the 3rd interface is less than described preset value, to control described first interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074169.7A CN104034075A (en) | 2013-03-07 | 2013-03-07 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310074169.7A CN104034075A (en) | 2013-03-07 | 2013-03-07 | Air-conditioning system |
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| CN104034075A true CN104034075A (en) | 2014-09-10 |
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| CN201310074169.7A Pending CN104034075A (en) | 2013-03-07 | 2013-03-07 | Air-conditioning system |
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| CN105910323A (en) * | 2016-06-03 | 2016-08-31 | 广东申菱环境系统股份有限公司 | Refrigerating system, refrigerating unit and refrigerating control method for refrigerating unit |
| CN106766295A (en) * | 2016-12-08 | 2017-05-31 | 东莞信易电热机械有限公司 | A kind of cooling-water machine |
| CN108469134A (en) * | 2018-04-17 | 2018-08-31 | 南京佳力图机房环境技术股份有限公司 | A kind of modified air-cooled condenser and its control method |
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| CN108469134A (en) * | 2018-04-17 | 2018-08-31 | 南京佳力图机房环境技术股份有限公司 | A kind of modified air-cooled condenser and its control method |
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