CN103836773A - Multi-split air conditioning system and shutdown noise control method thereof - Google Patents
Multi-split air conditioning system and shutdown noise control method thereof Download PDFInfo
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- CN103836773A CN103836773A CN201210477318.XA CN201210477318A CN103836773A CN 103836773 A CN103836773 A CN 103836773A CN 201210477318 A CN201210477318 A CN 201210477318A CN 103836773 A CN103836773 A CN 103836773A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 24
- 239000003507 refrigerant Substances 0.000 claims description 17
- 230000008676 import Effects 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000002826 coolant Substances 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The invention provides a multi-split air conditioning system and a shutdown noise control method of the multi-split air conditioning system. The method includes the following steps that when a compressor shuts down under the refrigerating working condition, a one-way solenoid valve is opened, and an opened second electronic expansion valve is closed. In this way, when the compressor shuts down under the cooling working condition, the one-way solenoid valve is opened at the same time, the opened second electronic expansion valve is closed, and therefore noise generated when liquid coolants of an indoor unit impact the second electronic expansion valve when flowing is thoroughly eliminated, and users will feel more conformable when using the multi-split air conditioning system. Furthermore, the multi-split air conditioning system is easy and convenient to operate, and the shutdown noise control method of the multi-split air conditioning system is easy to implement.
Description
Technical field
The present invention relates to air conditioner refrigerating technical field, particularly relate to the control method of a kind of multi-online air-conditioning system and shutdown noise thereof.
Background technology
Because connected air conditioner system indoor set is in the market substantially all by electronic expansion valve controls, and air-conditioning system often occurs that in refrigeration indoor set reaches the various shutdown situations such as design temperature is shut down, protection shutdown, remote-control closedown.After shutting down, the electric expansion valve of indoor set is all opened to certain aperture, to realize the pressure balance of system high-low pressure.
In high-low pressure pressure balance process; indoor set liquid refrigerants there will be coolant throttle expansion to send the refrigerant pneumatic noise of " silk silk " after impacting electric expansion valve; this refrigerant pneumatic noise easily makes user feel uncomfortable in indoor shutdown afterwards, affects user job and life.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind of multi-online air-conditioning system of eliminating shutdown noise that has.
Another object of the present invention is to propose a kind of control method of this multi-online air-conditioning system shutdown noise.
According to the multi-online air-conditioning system of the embodiment of the present invention, comprising: compressor; Cross valve, described cross valve is communicated with the outlet of described compressor; Outdoor heat exchanger, described outdoor heat exchanger is communicated with the outlet of described compressor by described cross valve; Multiple indoor sets, the first end of the connection parallel with one another of described multiple indoor sets and described multiple indoor sets is communicated with described outdoor heat exchanger respectively; Electric expansion valve, described electric expansion valve is located between described outdoor heat exchanger and the first end of described indoor set, described electric expansion valve comprises the first electric expansion valve and the second electric expansion valve, described the first electric expansion valve is located at outdoor and one end and is communicated with described outdoor heat exchanger, be located to the connection parallel with one another of described multiple the second electric expansion valve indoor and one end and be communicated with the other end of described the first electric expansion valve respectively, the other end of described multiple the second electric expansion valves is communicated with the first end of described multiple indoor sets respectively; Fluid reservoir; described fluid reservoir is communicated with the second end of described indoor set by described cross valve for the import that stores refrigerant and described fluid reservoir; the outlet of described fluid reservoir is communicated with the import of described compressor; with single-pass magnetic valve; described single-pass magnetic valve is located between the outlet of described compressor and the import of described fluid reservoir and is communicated with the direct of described fluid reservoir to control described compressor; when described compressor is shut down under cooling condition; open described single-pass magnetic valve, and close described second electric expansion valve of unlatching.
Thus; according to the multi-online air-conditioning system of the embodiment of the present invention; in shutting down, open single-pass magnetic valve under cooling condition; and close the liquid refrigerants that the second electric expansion valve of having opened can thoroughly eliminate indoor set, in flowing, the second electric expansion valve impacted to caused noise, improve that multi-online air-conditioning system uses comfortableness.In addition, the multi-online air-conditioning system of the embodiment of the present invention is simple in structure, and it is convenient and cheap for manufacturing cost to manipulate.
In addition, multi-online air-conditioning system according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, when multi-online air-conditioning system start, described single-pass magnetic valve, in closed condition, meanwhile, needs the second electric expansion valve of the described indoor set freezing in pre-opening.
According to one embodiment of present invention, described the second electric expansion valve is opened to initial opening in advance so that described refrigerant circulates in described multi-online air-conditioning system.
The multi-online air-conditioning system of embodiment is shut down the control method of noise according to a further aspect of the invention, comprises the steps:
Compressor opens single-pass magnetic valve and cuts out the second electric expansion valve of unlatching in shutting down under cooling condition.
Thus; shut down the control method of noise according to the multi-online air-conditioning system of the embodiment of the present invention; in shutting down, open single-pass magnetic valve under cooling condition; and close the second electric expansion valve of having opened; the liquid refrigerants that can thoroughly eliminate indoor set impacts caused noise to the second electric expansion valve in flowing, improve that multi-online air-conditioning system uses comfortableness.In addition, the control method of the multi-online air-conditioning system of embodiment of the present invention shutdown noise is easy and simple to handle and easy to implement.
In addition, the control method of multi-online air-conditioning system shutdown noise according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, also comprise the steps:
By start key to start described compressor cooling;
Close described single-pass magnetic valve and pre-described the second electric expansion valve that needs unlatching of opening;
Whether detect that described single-pass magnetic valve has cut out and described the second electric expansion valve is opened; With
If detect that described single-pass magnetic valve has cut out and described the second electric expansion valve is opened, start described compressor.
Additional aspect of the present invention 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
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the connected mode schematic diagram according to the multi-online air-conditioning system of the embodiment of the present invention; With
Fig. 2 is the flow chart of shutting down the control method of noise according to the multi-online air-conditioning system of the embodiment of the present invention.
Description of reference numerals:
10: compressor; 11: compressor outlet; 12: compressor inlet; 20: cross valve; 30: outdoor heat exchanger 40: 51: the first electric expansion valves of multiple indoor sets; 52: the second electric expansion valves; 60: fluid reservoir; 61: fluid reservoir import; 62: fluid reservoir outlet; 70: single-pass magnetic valve.
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, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of instructions such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to Fig. 1, the multi-online air-conditioning system according to the embodiment of the present invention is described.
Comprise according to the multi-online air-conditioning system of the embodiment of the present invention: compressor 10, cross valve 20, outdoor heat exchanger 30, multiple indoor set 40, electric expansion valve, fluid reservoir 60 and single-pass magnetic valve 70.
Particularly, as shown in Figure 1, the outlet 11 of compressor 10 is communicated with cross valve 20, and outdoor heat exchanger 30 is communicated with the outlet 11 of compressor 10 by cross valve 20.The first end (left end of indoor set 40 in Fig. 1) of multiple indoor sets 40 is communicated with outdoor heat exchanger 30, second end (right-hand member of indoor set 40 in Fig. 1) of multiple indoor sets 40 is communicated with the import 61 of the fluid reservoir 60 for storing refrigerant by cross valve 20, be that multiple indoor sets 40 are connected in parallel between outdoor heat exchanger 30 and fluid reservoir 60, and the outlet 62 of fluid reservoir 60 and the import 12 of compressor 10 are communicated with.
Refrigerant flows into outdoor heat exchanger 30 from the outlet 11 of compressor 10 through cross valve 20, then flow into respectively after indoor set, flow into fluid reservoir 60 through cross valve 20 again, finally flow back to compressor from fluid reservoir 60 again, so just formed the kind of refrigeration cycle of multi-online air-conditioning system of the present invention.
Electric expansion valve is located between outdoor heat exchanger 30 and the first end of indoor set 40, and comprises the first electric expansion valve 51 and the second electric expansion valve 52.The first electric expansion valve 51 is located at outdoor and one end and is communicated with outdoor heat exchanger 30, be located to the connection parallel with one another of multiple the second electric expansion valves 52 indoor and one end and be communicated with the other end of the first electric expansion valve 51 respectively, and the other end is communicated with the first end of multiple indoor sets 40 respectively.
Single-pass magnetic valve 70 is located between the outlet 11 of compressor 10 and the import 61 of fluid reservoir 60 and is communicated with the direct of fluid reservoir 60 to control compressor 10.
When the air-conditioning system of freezing receives stopping signal; shut down (being that multi-online air-conditioning system is shut down) at compressor 10 in, open single-pass magnetic valve 70; and close the second electric expansion valve 52 of having opened; close the second electric expansion valve 52 that those are in the indoor set 40 under cooling condition, and those second electric expansion valves 52 that have been in closed condition continue to keep closed condition.
Air-conditioning system makes the high-low pressure pressure Fast-Balance in air-conditioning system by the unlatching of single-pass magnetic valve while shutdown; and second electric expansion valve 52 of now closing unlatching can be avoided liquid refrigerants flowing between outdoor heat exchanger 30 and indoor set 40, the liquid refrigerants that therefore can thoroughly eliminate indoor set 40 impacts caused noise to the second electric expansion valve in flowing.
Thus; according to the multi-online air-conditioning system of the embodiment of the present invention; in shutting down, open single-pass magnetic valve 70 under cooling condition; and close the liquid refrigerants that the second electric expansion valve 52 of having opened can thoroughly eliminate indoor set 40, in flowing, the second electric expansion valve impacted to caused noise, improve that multi-online air-conditioning system uses comfortableness.In addition, the multi-online air-conditioning system of the embodiment of the present invention is simple in structure, and it is convenient and cheap for manufacturing cost to manipulate.
After adopting aforesaid way to shut down according to the multi-online air-conditioning system of the embodiment of the present invention; before again opening, need to close single-pass magnetic valve 70; and the second electric expansion valve 52 of the indoor set 40 of needs refrigeration is opened to initial opening in advance, can ensures that refrigerant circulates in air-conditioning system.Continue to keep closed condition without the second electric expansion valve 52 of the indoor set 40 of opening.
It will be appreciated that, the multi-online air-conditioning system of the embodiment of the present invention does not limit for the quantity of indoor set 40, can be according to power and demand self-defining indoor set 40 quantity.
The control method of shutting down noise according to multi-online air-conditioning system of the present invention is described below.
Shut down the control method of noise according to multi-online air-conditioning system of the present invention, comprise and shut down part A, shutdown part A concrete steps are as follows:
Step S10 when compressor 10 is shut down under cooling condition, opens single-pass magnetic valve 70 simultaneously, and second electric expansion valve 52 of closing unlatching is to control because liquid refrigerants flows through the noise that the second electric expansion valve 52 causes.
Thus; shut down the control method of noise according to the multi-online air-conditioning system of the embodiment of the present invention; in shutting down, open single-pass magnetic valve 70 under cooling condition; and close the second electric expansion valve 52 of having opened; the liquid refrigerants that can thoroughly eliminate indoor set 40 impacts caused noise to the second electric expansion valve in flowing, improve that multi-online air-conditioning system uses comfortableness.In addition, the control method of the multi-online air-conditioning system of embodiment of the present invention shutdown noise is easy and simple to handle and easy to implement.
The control method of the multi-online air-conditioning system of embodiment of the present invention shutdown noise also comprises start part B in addition, and start part B concrete steps are as follows:
Step S20, starts compressor 10 by start key and starts refrigeration, due to the unlatching of single-pass magnetic valve 70 in the time shutting down and closing of the second electric expansion valve 52, the now kind of refrigeration cycle of air-conditioning system is cut off, and therefore now compressor 10 does not first start.
Step S30, closes single-pass magnetic valve 70 and be communicated with the direct of fluid reservoir 60 to cut off compressor 10, and pre-unlatching needs the second electric expansion valve 52 of opening simultaneously.Recover like this kind of refrigeration cycle of whole air-conditioning system.
Step S40, detects whether single-pass magnetic valve 70 has closed and whether the second electric expansion valve 52 is opened.
Step S50, if single-pass magnetic valve 70 has cut out and the second electric expansion valve 52 has been opened, starts compressor 10 and freezes; Otherwise not starting compressor 10 freezes.
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 above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, amendment, replacement and modification.
Claims (5)
1. a multi-online air-conditioning system, is characterized in that, comprising:
Compressor;
Cross valve, described cross valve is communicated with the outlet of described compressor;
Outdoor heat exchanger, described outdoor heat exchanger is communicated with the outlet of described compressor by described cross valve;
Multiple indoor sets, the first end of the connection parallel with one another of described multiple indoor sets and described multiple indoor sets is communicated with described outdoor heat exchanger respectively;
Electric expansion valve, described electric expansion valve is located between described outdoor heat exchanger and the first end of described indoor set, described electric expansion valve comprises the first electric expansion valve and multiple the second electric expansion valve, described the first electric expansion valve is located at outdoor and one end and is communicated with described outdoor heat exchanger, be located to the connection parallel with one another of described multiple the second electric expansion valve indoor and one end and be communicated with the other end of described the first electric expansion valve respectively, the other end of described multiple the second electric expansion valves is communicated with the first end of described multiple indoor sets respectively;
Fluid reservoir, described fluid reservoir is communicated with the second end of described indoor set by described cross valve for the import that stores refrigerant and described fluid reservoir, and the outlet of described fluid reservoir is communicated with the import of described compressor; With
Single-pass magnetic valve, described single-pass magnetic valve is located between the outlet of described compressor and the import of described fluid reservoir and is communicated with the direct of described fluid reservoir to control described compressor;
When described compressor is shut down under cooling condition, open described single-pass magnetic valve, and close described second electric expansion valve of unlatching.
2. multi-online air-conditioning system according to claim 1, is characterized in that, when described multi-online air-conditioning system start, described single-pass magnetic valve, in closed condition, meanwhile, needs the second electric expansion valve of the described indoor set freezing in pre-opening.
3. multi-online air-conditioning system according to claim 2, is characterized in that, described the second electric expansion valve is opened to initial opening in advance so that described refrigerant circulates in described multi-online air-conditioning system.
4. the multi-online air-conditioning system as described in any one in claim 1-3 is shut down a control method for noise, it is characterized in that, comprises the steps:
1) compressor opens single-pass magnetic valve and cuts out the second electric expansion valve of unlatching in shutting down under cooling condition.
5. to go the noise control method described in 4 according to right, it is characterized in that, also comprise the steps:
2) by start key to start described compressor cooling;
3) close described single-pass magnetic valve and pre-described the second electric expansion valve that needs unlatching of opening;
4) whether detect that described single-pass magnetic valve has cut out and described the second electric expansion valve is opened; With
5) if detect that described single-pass magnetic valve has cut out and described the second electric expansion valve is opened, start described compressor.
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| CN201210477318.XA CN103836773B (en) | 2012-11-21 | 2012-11-21 | Multi-online air-conditioning system and shutdown noise control method thereof |
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| CN201210477318.XA CN103836773B (en) | 2012-11-21 | 2012-11-21 | Multi-online air-conditioning system and shutdown noise control method thereof |
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| CN104101054B (en) * | 2014-07-07 | 2017-01-11 | 广东美的暖通设备有限公司 | Control method and system of variable refrigerant flow (VRF) air conditioner |
| CN107576144A (en) * | 2017-08-09 | 2018-01-12 | 青岛海尔股份有限公司 | The closing method and device of a kind of refrigerator |
| CN108413586A (en) * | 2018-01-22 | 2018-08-17 | 宁波奥克斯电气股份有限公司 | The method for noise reduction control and multi-connected machine of multi-connected machine |
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| CN109724218A (en) * | 2019-01-04 | 2019-05-07 | 青岛海信日立空调系统有限公司 | A kind of multi-gang air-conditioner ground heating system and control method |
| CN109724218B (en) * | 2019-01-04 | 2021-04-06 | 青岛海信日立空调系统有限公司 | Multi-split air-conditioning floor heating system and control method |
| CN110631285A (en) * | 2019-09-30 | 2019-12-31 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN111397164A (en) * | 2020-03-31 | 2020-07-10 | 广东美的制冷设备有限公司 | Multi-split air conditioning system and control method and control device thereof |
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