CN102878643A - Method for protecting multi-split air conditioner - Google Patents
Method for protecting multi-split air conditioner Download PDFInfo
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- CN102878643A CN102878643A CN 201110194263 CN201110194263A CN102878643A CN 102878643 A CN102878643 A CN 102878643A CN 201110194263 CN201110194263 CN 201110194263 CN 201110194263 A CN201110194263 A CN 201110194263A CN 102878643 A CN102878643 A CN 102878643A
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- heat exchanger
- valve
- protection device
- indoor heat
- expansion valve
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Abstract
The invention discloses a method for protecting a multi-split air conditioner. The multi-split air conditioner comprises a compressor, an outdoor heat exchanger, at least two indoor heat exchangers, a vapor-liquid separator and a four-way reversing valve, wherein each indoor heat exchanger is provided with a heat exchanger protection device which comprises an expansion valve for throttling a refrigerant, a one-way valve, a capillary tube and an electromagnetic valve; the expansion valve is connected with the one-way valve in parallel to form a first part; the capillary tube is connected with the electromagnetic valve in parallel to form a second part; the first part and the second part are connected in series to be connected with the indoor heat exchangers; and when the heat exchanger protection device can be in a normal state and a protection state, the electromagnetic valve and the expansion valve are opened when the heat exchanger protection device is in the normal state, and the electromagnetic valve and the expansion valve are closed when the heat exchanger protection device is in the protection state. According to the method for protecting the multi-split air conditioner, due to the protection device on the branch of each indoor heat exchanger, refrigerant can be effectively prevented from being backlogged in a heat exchange copper tube on the branch after one of the indoor heat exchangers is shut down, so that the operation efficiency of the whole system is improved.
Description
Technical field
The present invention relates to a kind of protective device of air-conditioning, or rather, is a kind of protective device and guard method of indoor set of multi-connected machine.
Background technology
Unit machine and multi-connected machine all are air-conditioning equipments commonly used at present.Unit machine refers to that a machine is that a unit is such as window air conditioner, and multi-connected machine to be many machines link forms a system and use, it adopts a compressor driving plurality indoor set take compressed refrigerant as pumped (conveying) medium, and outdoor host computer is comprised of outside heat exchanger, compressor and other annexes.Indoor set is comprised of direct-evaporation-type heat exchanger and blower fan.Cold-producing medium is delivered to indoor set by pipeline by off-premises station, by the flow of cold-producing medium in the control piper and the refrigeration flow that enters indoor radiator, satisfies different load and has a holiday or vacation to the wet requirement of heat.With the topmost difference of other refrigerant type air-conditioning systems be: this system compresses machine adopts frequency control to control, when system is in underload, by frequency-variable controller control compressor rotary speed, make that the circular flow of refrigerant is changed in the system, thereby refrigerating capacity is controlled to meet instructions for use automatically, only need establish a frequency-changeable compressor to general dwelling house with domestic air-conditioning system.
Multi-connected machine is when cooling condition, and outdoor heat exchanger is as condenser, and indoor heat exchanger is as evaporimeter; And when multi-connected machine in heating condition lower time, outdoor heat exchanger is as evaporimeter, indoor heat exchanger is as condenser.Especially when under heating condition, when one of them indoor set shutdown, still have most of cold-producing medium and be trapped within the heat exchanger copper pipe, this shortage of holding back the cold-producing medium that can cause system affects system effectiveness.
Summary of the invention
The present invention mainly is the technical problem that solves the existing deficiency of prior art, prevents that effectively after the indoor heat exchanger of one of them branch road quits work cold-producing medium from overstocking the multi-gang air-conditioner in the heat exchange copper tube of this branch road thereby provide a kind of.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of protective device of multi-gang air-conditioner; described multi-gang air-conditioner comprises compressor, outdoor heat exchanger, at least two indoor heat exchangers, vapour liquid separator and four-way change-over valves; described indoor heat exchanger is provided with a heat exchanger protection device
As preferably; described heat exchanger protection device comprises expansion valve, a check valve, a capillary and a magnetic valve that carries out throttling for a pair of cold-producing medium; described expansion valve formation in parallel with check valve first; described capillary formation in parallel with magnetic valve second portion, described first is connected with described indoor heat exchanger with the second portion series connection is rear.
As preferably, described outdoor heat exchanger is air cooling fin formula heat exchanger, and described outdoor heat exchanger also comprises a heat exchange fan, and described indoor heat exchanger comprises a heat exchange fan.
The invention also discloses a kind of guard method of multi-gang air-conditioner; described multi-gang air-conditioner comprises compressor; outdoor heat exchanger; at least two indoor heat exchangers; vapour liquid separator and four-way change-over valve; described indoor heat exchanger is provided with a heat exchanger protection device; described heat exchanger protection device comprises the expansion valve that carries out throttling for a pair of cold-producing medium; one check valve; one capillary and a magnetic valve; described expansion valve formation in parallel with check valve first; described capillary formation in parallel with magnetic valve second portion; described first is connected with described indoor heat exchanger with the second portion series connection is rear; when described heat exchanger protection device can be in normal condition and guard mode; when described heat exchanger protection device is in normal condition; described magnetic valve and expansion valve are opened; when described heat exchanger protection device was in guard mode, described magnetic valve and expansion valve were closed.
As preferably, described outdoor heat exchanger is air cooling fin formula heat exchanger, and described outdoor heat exchanger also comprises a heat exchange fan, and described indoor heat exchanger comprises a heat exchange fan.
Therefore; pass through technique scheme; the present invention is provided with protective device by the branch road at indoor heat exchanger, can prevent effectively that cold-producing medium overstocks in the heat exchange copper tube of this branch road after the indoor heat exchanger of one of them branch road quits work, and improves the operational efficiency of whole system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the guard method of multi-gang air-conditioner of the present invention;
Wherein, 1-compressor, 2-outdoor heat exchanger, 3-indoor heat exchanger,
The 4-vapour liquid separator, the 5-four-way change-over valve, the 4-heat exchanger protection device,
The 41-expansion valve, 42-check valve, 43-capillary, 44-magnetic valve.
The specific embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention are made more explicit defining.
The invention provides and a kind ofly prevent that effectively after the indoor heat exchanger of one of them branch road quits work cold-producing medium from overstocking the multi-gang air-conditioner in the heat exchange copper tube of this branch road.
As shown in Figure 1; guard method for multi-gang air-conditioner of the present invention; described multi-gang air-conditioner comprises compressor 1, outdoor heat exchanger 2, at least two indoor heat exchangers 3, vapour liquid separator 4 and four-way change-over valves 5, and described indoor heat exchanger 3 is provided with a heat exchanger protection device 4
Described heat exchanger protection device 4 comprises expansion valve 41, a check valve 42, a capillary 43 and a magnetic valve 44 that carries out throttling for a pair of cold-producing medium; described expansion valve 41 and check valve 42 formation in parallel first; described capillary 43 and magnetic valve 44 formation second portions in parallel, described first is connected with described indoor heat exchanger 3 with the second portion series connection is rear.
Described outdoor heat exchanger 2 is air cooling fin formula heat exchanger, and described outdoor heat exchanger 2 also comprises a heat exchange fan 21, and described indoor heat exchanger 3 comprises a heat exchange fan 31.
When system is in heating mode lower time, indoor heat exchanger 3 plays the effect of condensation.During normal operation, magnetic valve 44 and expansion valve 41 are all opened, and most cold-producing mediums flow through outdoor heat exchanger 3 to next stage from magnetic valve 44 and expansion valve 41.
When certain regional temperature reaches predetermined value, need to stop to this district heating.This moment shut electromagnetic valve 44 and expansion valve 41, the effect of doing like this is, when certain indoor heat exchanger is closed operation, so that the cold-producing medium in the indoor heat exchanger can flow out, prevents that cold-producing medium from assembling in indoor heat exchanger.
Below only with an embodiment mentality of designing of the present invention is described, in the situation that system allows, the present invention can expand to simultaneously external more functional module, thereby expands to greatest extent its function.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.
Claims (2)
1. the guard method of a multi-gang air-conditioner; described multi-gang air-conditioner comprises compressor (1); outdoor heat exchanger (2); at least two indoor heat exchangers (3); vapour liquid separator (4) and four-way change-over valve (5); it is characterized in that; described indoor heat exchanger (3) is provided with a heat exchanger protection device (4); described heat exchanger protection device (4) comprises the expansion valve (41) that carries out throttling for a pair of cold-producing medium; one check valve (42); one capillary (43) and a magnetic valve (44); described expansion valve (41) and check valve (42) formation in parallel first; described capillary (43) and magnetic valve (44) formation in parallel second portion; described first is connected with described indoor heat exchanger (3) with the second portion series connection is rear; when described heat exchanger protection device (4) can be in normal condition and guard mode; when described heat exchanger protection device (4) when being in normal condition; described magnetic valve (44) and expansion valve (41) are opened; when described heat exchanger protection device (4) when being in guard mode, described magnetic valve (44) and expansion valve (41) are closed.
2. the guard method of multi-gang air-conditioner according to claim 1; it is characterized in that; described outdoor heat exchanger (2) is air cooling fin formula heat exchanger; described outdoor heat exchanger (2) also comprises a heat exchange fan (21), and described indoor heat exchanger (3) comprises a heat exchange fan (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110194263 CN102878643A (en) | 2011-07-12 | 2011-07-12 | Method for protecting multi-split air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110194263 CN102878643A (en) | 2011-07-12 | 2011-07-12 | Method for protecting multi-split air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102878643A true CN102878643A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110194263 Pending CN102878643A (en) | 2011-07-12 | 2011-07-12 | Method for protecting multi-split air conditioner |
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| CN (1) | CN102878643A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742428A (en) * | 2014-01-13 | 2014-04-23 | 广东美芝制冷设备有限公司 | Compressor and air conditioner with same |
| CN105423421A (en) * | 2015-12-02 | 2016-03-23 | 珠海格力电器股份有限公司 | Indoor unit of multi-split air conditioner, multi-split air conditioner and control method of multi-split air conditioner |
| CN106287986A (en) * | 2016-09-29 | 2017-01-04 | 广东美的制冷设备有限公司 | A kind of air-conditioner and control method thereof |
| CN107621058A (en) * | 2017-08-29 | 2018-01-23 | 珠海格力电器股份有限公司 | Indoor-unit cooling-medium control device and its control method, indoor set and air-conditioning system |
| CN111503730A (en) * | 2020-04-15 | 2020-08-07 | 海信（山东）空调有限公司 | Air conditioner and method of controlling the same |
-
2011
- 2011-07-12 CN CN 201110194263 patent/CN102878643A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742428A (en) * | 2014-01-13 | 2014-04-23 | 广东美芝制冷设备有限公司 | Compressor and air conditioner with same |
| CN105423421A (en) * | 2015-12-02 | 2016-03-23 | 珠海格力电器股份有限公司 | Indoor unit of multi-split air conditioner, multi-split air conditioner and control method of multi-split air conditioner |
| CN106287986A (en) * | 2016-09-29 | 2017-01-04 | 广东美的制冷设备有限公司 | A kind of air-conditioner and control method thereof |
| CN107621058A (en) * | 2017-08-29 | 2018-01-23 | 珠海格力电器股份有限公司 | Indoor-unit cooling-medium control device and its control method, indoor set and air-conditioning system |
| CN111503730A (en) * | 2020-04-15 | 2020-08-07 | 海信（山东）空调有限公司 | Air conditioner and method of controlling the same |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |