CN105423505A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
- Publication number
- CN105423505A CN105423505A CN201510940635.4A CN201510940635A CN105423505A CN 105423505 A CN105423505 A CN 105423505A CN 201510940635 A CN201510940635 A CN 201510940635A CN 105423505 A CN105423505 A CN 105423505A
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- heat
- air
- refrigerant
- conditioning
- branch road
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention aims at providing an air conditioner which is mainly used for solving the problems of poor heat dissipation effect of an electrical appliance box and long defrosting time of an existing air conditioner. The air conditioner is added with a second heat exchanger system on the basis of an original heat exchange system, and further provided with a coolant branch to directly lead a first coolant flowing through a pipeline between an outdoor heat exchanger and an indoor heat exchanger in an air suction port of a first compressor; heat emitted by heating components in the air conditioner is absorbed through the second heat exchanger system and the absorbed heat is transferred to the first coolant in the coolant branch; in such a manner, a suction vapor superheat degree and a mass flow of the first compressor are improved while the heat dissipation problem is well solved, and further, the reliability of the air conditioner is improved and defrosting is accelerated; as a result, the comfort of use for users is improved. Meanwhile, the invention provides a control method of the air conditioner.
Description
Technical field
The present invention relates to filed of air conditioning, be specifically related to a kind of air-conditioning and control method thereof.
Background technology
Large power air-conditioned especially multi-gang air-conditioner, the electric elements in its electrical appliance kit are more, and heating is comparatively large, and the radiating mode relatively commonly used for electrical appliance kit at present generally adopts the mode of air-cooled rib or the heat radiation of internal system refrigerant branch.Wherein, the mode of wind-cooling heat dissipating is bulky, and weight is comparatively large, and radiating effect is poor; And the mode of internal system refrigerant branch heat radiation, be all dispel the heat from system Nei Yin mono-road refrigerant to electrical appliance kit, bad control of generating heat, effect is undesirable.In addition, current multi-connected machine defrost is comparatively slow, and the comfort of user is poor.
For the problems referred to above, need badly and a kind of new air-conditioning is provided, poor to solve the electrical appliance kit radiating effect existed in prior art, the slow-footed problem of air-conditioning defrost.
Summary of the invention
In view of this, the invention provides a kind of heat generating components good heat dissipation effect, reliability is high, the fireballing air-conditioning of air-conditioning defrost.
For reaching this object, the present invention by the following technical solutions:
A kind of air-conditioning, comprise the first heat-exchange system, described first heat-exchange system comprises the first compressor, outdoor heat exchanger and indoor heat exchanger, also comprises refrigerant branch road and the second heat-exchange system, wherein,
One end of described refrigerant branch road connects the air inlet pipe of described first compressor, the other end accesses between described outdoor heat exchanger and described indoor heat exchanger, and the first refrigerant for part being flowed through pipeline between described outdoor heat exchanger and described indoor heat exchanger directly introduces the air entry of described first compressor;
Described second heat-exchange system is for the heat that absorbs described air-conditioning internal heat generation parts and distribute and the first refrigerant passed to by the heat of absorption in described refrigerant branch road.
Preferably, described refrigerant branch road is provided with branch road electric expansion valve and branch road heat exchanging part branch road electric expansion valve.
Preferably, described second heat-exchange system comprises the closed circuit of the second refrigerant, absorbs the heat that described air-conditioning internal heat generation parts distribute and the first refrigerant passed to by the heat of absorption in described refrigerant branch road by described second refrigerant that circulates.
Preferably, described second refrigerant circulation circuit is provided with the second compressor, the first heat exchanging part, heat-exchanging electronic expansion valve and the second heat exchanging part, the heat that described second heat exchanging part is distributed for utilizing described second refrigerant to absorb described air-conditioning internal heat generation parts, described first heat exchanging part is used for the first refrigerant heat-exchanging electronic expansion valve passed to by the heat that described second refrigerant absorbs in described refrigerant branch road.
Preferably, described branch road heat exchanging part and the first heat exchanging part form the first heat-exchanger rig branch road electric expansion valve heat-exchanging electronic expansion valve; And/or,
The radiator of described second heat exchanging part and described air-conditioning internal heat generation parts forms the second heat-exchanger rig, and described second heat exchanging part one end connects described heat-exchanging electronic expansion valve, and the other end connects the air entry heat-exchanging electronic expansion valve of described second compressor.
Preferably, described radiator is gilled radiator, and described second heat exchanging part is coil-like, and is arranged in the fin of described radiator.
Preferably, described air-conditioning internal heat generation parts are electrical appliance kit.
Preferably, described air-conditioning is multi-gang air-conditioner.
Another object of the present invention is to provide a kind of and also can improve operation of air conditioner reliability and the control method of heat generating components good heat dissipation effect for above-mentioned air-conditioning, specific as follows:
A kind of control method of air-conditioning described above, after described air-conditioning is opened, control described branch road electric expansion valve to open, the first refrigerant part being flowed through pipeline between described outdoor heat exchanger and described indoor heat exchanger introduces the air entry of described first compressor, and the first coolant quantity by regulating the aperture of described branch road electric expansion valve to control to introduce described first compressor air suction mouth.
Preferably, described branch road electric expansion valve is opened when described air-conditioning carries out defrosting mode.
The invention has the beneficial effects as follows:
Air-conditioning provided by the invention adds the second heat-exchange system on the basis of original heat-exchange system, and be provided with the air entry that the first refrigerant partly flowing through pipeline between outdoor heat exchanger and indoor heat exchanger is directly introduced the first compressor by a refrigerant branch road, the heat that air-conditioning internal heat generation parts distribute is absorbed and the first refrigerant passed to by the heat of absorption in refrigerant branch road by the second heat-exchange system, suction superheat and the mass flow of the first compressor is improve while well solving heat dissipation problem, improve the reliability of air-conditioning, accelerate defrost, improve the comfort of user.
The control method of above-mentioned air-conditioning provided by the invention can improve the operational reliability of air-conditioning and heat generating components good heat dissipation effect.
Accompanying drawing explanation
By referring to the description of accompanying drawing to the embodiment of the present invention, above-mentioned and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is the structural representation of the air-conditioning that the specific embodiment of the invention provides.
In figure, 1, electrical appliance kit; 2, the first compressor; 3, cross valve; 4, outdoor heat exchanger; 5, outdoor electrical expansion valve; 6, indoor heat exchanger; 7, indoor electronic expansion valve; 8, refrigerant branch road; 9, gas-liquid separator; 10, branch road electric expansion valve; 11, the second compressor; 12, the first heat-exchanger rig; 121, branch road heat exchanging part; 122, the first heat exchanging part; 13, heat-exchanging electronic expansion valve; 14, the second heat-exchanger rig; 141, the second heat exchanging part; 142, radiator; 15, oil eliminator.
Detailed description of the invention
Based on embodiment, present invention is described below, but the present invention is not restricted to these embodiments.In hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.In order to avoid obscuring essence of the present invention, known method, process, flow process, element do not describe in detail.
Air-conditioning provided by the invention comprises the first heat-exchange system, first heat-exchange system comprises the first compressor, cross valve, outdoor heat exchanger, outdoor electrical expansion valve, indoor heat exchanger and indoor electronic expansion valve, is undertaken conventional heating, the dehumidifying of hot cold-peace by the first heat-exchange system.
This air-conditioning also comprises refrigerant branch road and the second heat-exchange system.One end of refrigerant branch road connects the air inlet pipe of the first compressor, between other end access outdoor heat exchanger and indoor heat exchanger, the first refrigerant for part being flowed through pipeline between outdoor heat exchanger and indoor heat exchanger directly introduces the air entry of the first compressor, second heat-exchange system is for the heat that absorbs air-conditioning internal heat generation parts and distribute and the first refrigerant passed to by the heat of absorption in refrigerant branch road, suction superheat and the mass flow of the first compressor is improve while well solving heat dissipation problem, improve the reliability of air-conditioning, accelerate defrost, improve the comfort of user.
The embodiment of air-conditioning of the present invention is described referring to Fig. 1.
Air-conditioning in the present embodiment is multi-gang air-conditioner, and it has two indoor sets be arranged in parallel.Air-conditioning comprises two heat-exchange systems, one is the first conventional heat-exchange system, comprise the first compressor 2, oil eliminator 15, cross valve 3, outdoor heat exchanger 4, outdoor electrical expansion valve 5, two indoor heat exchangers be arranged in parallel 6 and gas-liquid separator 9, each indoor heat exchanger 6 correspondence arranges an indoor electronic expansion valve 7, its annexation is identical with existing air-conditioning, does not repeat them here.Another one is the second heat-exchange system, the air intake duct that the first refrigerant that part flows through pipeline between outdoor heat exchanger 4 and indoor heat exchanger 6 is directly introduced the first compressor 2 by a refrigerant branch road 8 is set, the heat that the second heat-exchange system Absorbable rod air-conditioning internal heat generation parts distribute the first refrigerant passed to by the heat of absorption in refrigerant branch road 8.
In the present embodiment, refrigerant branch road 8 accesses on the pipeline between outdoor heat exchanger 4 and outdoor electrical expansion valve 5, certainly, also on accessible pipeline between outdoor electrical expansion valve 5 and indoor heat exchanger 6.
Further, refrigerant branch road 8 being provided with branch road electric expansion valve 10 and branch road heat exchanging part 121, controlling by regulating the aperture of branch road electric expansion valve 10 amount directly introducing the first refrigerant in the first compressor 2 air intake duct.Also can arrange controller, controller regulates the aperture of branch road electric expansion valve 10 according to the mode of operation of the first heat-exchange system.Controller can be arranged separately, also can be the master controller of air-conditioning.The exchange of heat is carried out by branch road heat exchanging part 121.
As a kind of preferred embodiment, the second heat-exchange system comprises the closed circuit of the second refrigerant, absorbs the heat that electrical appliance kit 1 distributes and the first refrigerant passed to by the heat of absorption in refrigerant branch road 8 by second refrigerant that circulates.Concrete, the second refrigerant circulation circuit is provided with the second compressor 11, first heat exchanging part 122, heat-exchanging electronic expansion valve 13 and the second heat exchanging part 141.Air-conditioning internal heat generation parts can but to be not limited to be the electrical appliance kit 1 of air-conditioning.
Specifically Each part is introduced for electrical appliance kit 1 in this enforcement.Second heat exchanging part 141 is arranged at electrical appliance kit 1 place, for the heat utilizing the second refrigerant absorption electrical appliance kit 1 to distribute.First heat exchanging part 122 is arranged at branch road heat exchanging part 121 place of refrigerant branch road 8, and the heat for being absorbed by the second refrigerant passes to the first refrigerant in refrigerant branch road 8.The first heat-exchanger rig 12 is formed by branch road heat exchanging part 121 and the first heat exchanging part 122, the radiator 142 of the second heat exchanging part 141 and electrical appliance kit 1 forms the second heat-exchanger rig 14, second heat exchanging part 141 one end connects heat-exchanging electronic expansion valve 13, and the other end connects the air entry of the second compressor 11.
For above-mentioned air-conditioning, additionally provide the control method of air-conditioning.
When the first heat-exchange system running refrigerating pattern, environment temperature is all generally worst hot case, and multi-connected machine is all adopt frequency conversion drive, caloric value is relatively large, the general caloric value that can reach a few hectowatt, now branch road electric expansion valve 10 is opened, and allow part after branch road electric expansion valve 10 throttling, become low pressure refrigerant through the first refrigerant of condensation and enter the first heat-exchanger rig 12, and the second refrigerant compressed through the second compressor 11 in the second heat-exchange system also enters the first heat-exchanger rig 12.In the first heat-exchanger rig 12, the first refrigerant in branch road heat exchanging part 121 absorbs the heat of the second refrigerant release in the first heat exchanging part 122, the first refrigerant being heated into gaseous state is drained into the air intake duct of the first compressor 2, increase the suction superheat of the first compressor 2, the suction side being conducive to guarantee first heat-exchange system is like this gaseous coolant, that avoids the first compressor 2 returns liquid hidden danger, increases the reliability of system.Second refrigerant after release heat, enters the second heat-exchanger rig 14 in the first heat-exchanger rig 12 after heat-exchanging electronic expansion valve 13 throttling, and at the second heat-exchanger rig place, the second refrigerant absorbs the heat that electrical appliance kit 1 distributes, and reaches the object of cooling electrical appliance kit 1.According to the electric operation situation of electrical appliance kit 1, the adjustment of heat-exchanging electronic expansion valve 13 aperture can be carried out, thus reaches the object of controlled cooling model effect simultaneously.
In like manner, when the first heat-exchange system runs heating mode, the outdoor heat exchanger 4 of the first heat-exchange system is in evaporation side, need to meet from environment temperature absorption heat to heat requirement, but now environment temperature is lower, first heat-exchange system exchange capability of heat is poor, controlling brancher electric expansion valve 10 is opened greatly, allow the first refrigerant of part low-temp low-pressure in the first heat-exchanger rig 12, absorb the heat of high temperature of the second refrigerant release, significantly can improve heat transfer boundary condition, increase heat transfer effect, reach the object of cooling electrical appliance kit 1, simultaneously, part first refrigerant is directly conducting to the low pressure air suction side of the first compressor 2, improvement system cold medium flux and overheat condition.
When the first heat-exchange system runs defrost pattern, the outdoor heat exchanger 4 of the first heat-exchange system is in condensing state, but exist owing to now there being frost, system condensing pressure and condensation temperature are all in a lower state, cooled liquid first refrigerant is after branch road electric expansion valve 10 throttling, enter in the first heat-exchanger rig 12, heat is absorbed from the condensation side of the second heat-exchange system, become the low-pressure side that gaseous coolant enters the first compressor 2, participate in again in defrost through the first compressor 2, the heat that the electrical appliance kit 1 that second heat-exchange system absorbs distributes is for the defrost of the first heat-exchange system, simultaneity factor stream is shorter, not exclusively pusher side absorbs heat indoor, the defrost of the first heat-exchange system can be accelerated, improve the comfort of user.
Wherein, the concrete structure of the first heat-exchanger rig 12 is not limit, the structure of heat exchange between branch road heat exchanging part 121 and the first heat exchanging part 122 can be realized, such as branch road heat exchanging part 121 and the first heat exchanging part 122 are heat exchanger tube, or the first heat exchanging part 122 is the space in a housing, branch road heat exchanging part 121 is heat exchanger tube in housing etc.
The concrete structure of the second heat-exchanger rig 14 is not also limit, and can realize the structure of heat exchange between the second heat exchanging part 141 and radiator 142.As a kind of preferred embodiment, radiator 142 is gilled radiator, and the second heat exchanging part 141 in coil-like, and is arranged in the fin of radiator 142.
Certainly, be understandable that, the first heat-exchanger rig 12 and the second heat-exchanger rig are all not limited to said structure, as long as can realize the structure that between the first refrigerant and the second refrigerant, heat transmits.It is multi-connected machine that air-conditioning is also not limited to, even multi-connected machine, the quantity of indoor set is also not limited to two.First refrigerant and the second refrigerant can be the same or different.
In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.
Meanwhile, should be appreciated that example embodiment is provided, to make the disclosure be comprehensive, and its scope is fully conveyed to those skilled in the art.A lot of specific detail (such as the example of particular elements, equipment and method) is presented to provide thorough understanding of the disclosure.It will be apparent to one skilled in the art that and do not need to adopt specific detail, example embodiment can be implemented with much different forms, and example embodiment should not be understood to limit the scope of the present disclosure.In some example embodiments, well-known device structure and well-known technology are not described in detail.
When an element or layer be mentioned as another element or layer " on ", " being engaged to ", " being connected to " or " being coupled to " another element or layer time, its can directly on another element or layer, directly engaged, connected or be connected to another element or layer, or intermediary element or layer can be there is.By contrast, when an element be mentioned as " directly " another element or layer " on ", " being directly engaged to ", " being directly connected to " or " being directly coupled to " another element or layer time, intermediary element or layer can not be there is.Other word for describing relation between element should be explained in a similar manner (such as, " between " and " directly between ", " vicinity " and " being directly close to " etc.).As used herein, term "and/or" comprises arbitrary in the Listed Items of one or more association or all combines.
Although term first, second, third, etc. can be used to describe each element, parts, region, layer and/or section at this, these elements, parts, region, layer and/or section should not limited by these terms.These terms can only for distinguishing element, parts, region, layer or a section and another element, region, layer or section.The term of such as " first ", " second " and other numerical value term when not meaning that order or sequentially when this uses, unless context explicitly points out.Thus, the first element discussed below, parts, region, layer or section can be called as the second element, parts, region, layer or section, and do not deviate from the instruction of example embodiment.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various change and change.All do within spirit of the present invention and principle any amendment, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air-conditioning, comprise the first heat-exchange system, described first heat-exchange system comprises the first compressor (2), outdoor heat exchanger (4) and indoor heat exchanger (6), it is characterized in that: also comprise refrigerant branch road (8) and the second heat-exchange system, wherein
One end of described refrigerant branch road (8) connects the air inlet pipe of described first compressor (2), the other end accesses between described outdoor heat exchanger (4) and described indoor heat exchanger (6), and the first refrigerant for part being flowed through pipeline between described outdoor heat exchanger (4) and described indoor heat exchanger (6) introduces the air entry of described first compressor (2);
Described second heat-exchange system is for the heat that absorbs described air-conditioning internal heat generation parts and distribute and the first refrigerant passed to by the heat of absorption in described refrigerant branch road (8).
2. air-conditioning according to claim 1, is characterized in that: described refrigerant branch road (8) is provided with branch road electric expansion valve (10) and branch road heat exchanging part (121).
3. air-conditioning according to claim 2, it is characterized in that: described second heat-exchange system comprises the closed circuit of the second refrigerant, absorb the heat that described air-conditioning internal heat generation parts distribute and the first refrigerant passed to by the heat of absorption in described refrigerant branch road (8) by described second refrigerant that circulates.
4. air-conditioning according to claim 3, it is characterized in that: described second refrigerant circulation circuit is provided with the second compressor (11), the first heat exchanging part (122), heat-exchanging electronic expansion valve (13) and the second heat exchanging part (141), the heat that described second heat exchanging part (141) is distributed for utilizing described second refrigerant to absorb described air-conditioning internal heat generation parts, described first heat exchanging part (122) passes to the first refrigerant in described refrigerant branch road (8) for the heat absorbed by described second refrigerant.
5. air-conditioning according to claim 4, is characterized in that: described branch road heat exchanging part (121) and the first heat exchanging part (122) form the first heat-exchanger rig (12); And/or,
The radiator (142) of described second heat exchanging part (141) and described air-conditioning internal heat generation parts forms the second heat-exchanger rig (14), described second heat exchanging part (141) one end connects described heat-exchanging electronic expansion valve (13), and the other end connects the air entry of described second compressor (11).
6. air-conditioning according to claim 5, is characterized in that: described radiator (142) is gilled radiator, and described second heat exchanging part (141) in coil-like, and is arranged in the fin of described radiator (142).
7. the air-conditioning according to any one of claim 1 to 6, is characterized in that: described air-conditioning internal heat generation parts are electrical appliance kit (1).
8. the air-conditioning according to any one of claim 1 to 6, is characterized in that: described air-conditioning is multi-gang air-conditioner.
9. the control method of an air-conditioning as described in any one of claim 2 to 8, it is characterized in that: after described air-conditioning is opened, control the unlatching of described branch road electric expansion valve (10), the first refrigerant part being flowed through pipeline between described outdoor heat exchanger (4) and described indoor heat exchanger (6) introduces the air entry of described first compressor (2), and the first coolant quantity by regulating the aperture of described branch road electric expansion valve (10) to control to introduce described first compressor (2) air entry.
10. the control method of air-conditioning according to claim 9, is characterized in that: open described branch road electric expansion valve (10) when described air-conditioning carries out defrosting mode.
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| CN201510940635.4A CN105423505A (en) | 2015-12-15 | 2015-12-15 | Air conditioner and control method thereof |
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| CN105937788A (en) * | 2016-06-01 | 2016-09-14 | 广东美的制冷设备有限公司 | Integral air conditioner and control method thereof |
| CN107401849A (en) * | 2017-08-15 | 2017-11-28 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
| CN107560215A (en) * | 2017-08-15 | 2018-01-09 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
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Application publication date: 20160323 |