CN100351575C - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
CN100351575C
CN100351575C CNB2005100070255A CN200510007025A CN100351575C CN 100351575 C CN100351575 C CN 100351575C CN B2005100070255 A CNB2005100070255 A CN B2005100070255A CN 200510007025 A CN200510007025 A CN 200510007025A CN 100351575 C CN100351575 C CN 100351575C
Authority
CN
China
Prior art keywords
air
plate
heat exchanger
refrigerant
indoor unit
Prior art date
Application number
CNB2005100070255A
Other languages
Chinese (zh)
Other versions
CN1737435A (en
Inventor
赵殷晙
柳润镐
黄轮梯
张志永
Original Assignee
Lg电子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR1020040066058 priority Critical
Priority to KR1020040066058A priority patent/KR100608682B1/en
Application filed by Lg电子株式会社 filed Critical Lg电子株式会社
Publication of CN1737435A publication Critical patent/CN1737435A/en
Application granted granted Critical
Publication of CN100351575C publication Critical patent/CN100351575C/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle

Abstract

An indoor unit of an air conditioner, includes a blower fan disposed within a casing; and a heat exchanger for heat-exchanging between refrigerant and air flowing by the blower fan, said heat exchanger connected to a refrigerant inlet pipe for introducing refrigerant and a refrigerant outlet pipe for discharging a refrigerant, wherein the refrigerant inlet pipe is connected to a side of the heat exchanger, where a flow velocity of the air passing through the heat exchanger is relatively high. Accordingly, efficiency of heat exchange between the indoor air and refrigerant can be improved, and thus cooling and heating efficiency of the indoor air is improved, thereby improving performance of the air conditioner. Also, by reducing the operation time of the air conditioner, power consumption can be reduced.

Description

The indoor unit of air-conditioning

Technical field

The present invention relates to the indoor unit of air-conditioning, and be particularly related to a kind of air conditioner indoor unit that can improve the heat exchanger effectiveness between cold-producing medium and the air.

Background technology

In general, air-conditioning is a kind of device that keeps the indoor temperature that suits by the latent heat of vaporization of utilizing cold-producing medium, and cold-producing medium circulates in the cycle in the refrigeration of compressor, heat exchanger, expansion valve and evaporimeter.

Air-conditioning carries out refrigerating operation by a series of process to a room, compressor is at saturation pressure lower compression cold-producing medium, compressed cold-producing medium is liquefied by heat exchanger, the cold-producing medium that is liquefied is under the throttling of expansion valve, under the state that is depressurized and expands, be directed in this evaporimeter, cold-producing medium that is imported into and evaporimeter ambient air carry out heat exchange, and are evaporated in evaporimeter.

Whether this air-conditioning forms as one according to indoor unit and outdoor unit, is divided into integral air conditioner (integral type) and split-type air conditioner.According to installation form, split-type air conditioner is divided into wall-hanging and cabinet type.

As depicted in figs. 1 and 2, the indoor unit of traditional air-conditioning comprises: a housing 110, and it has one and is used to suck the air suction portion 112 of air and be positioned at the discharge portion 114 that top is used to discharge air; One is installed in the air blast 120 of housing 110 inside, is used for sucking and discharging air; With an indoor heat converter 130 that is installed in housing 110 inside, be used to make in housing 110 flow air and cold-producing medium to carry out heat exchange.

The heat exchanger that indoor heat exchange unit 130 is A coil-type (A-coil heat exchanger), it has a pair of plate 131 and 132.As for this plate 131 and 132, circulate among has a plurality of pipes 133 of cold-producing medium to be installed in respectively on this plate, because the upper end of this plate links together, and their lower end is separated from each other, and this plate 131 and 132 has a predetermined angle.

Be connected to the refrigerant inlet 136 of refrigerant inlet pipe 134, be installed in the lower end of each plate 131 and 132, be used for importing cold-producing medium, then cold-producing medium is imported to the pipe 133 of this plate 131 and 132 from the outdoor unit (not shown).The refrigerant outlet 137 that is connected to refrigerant outlet pipe 135 is installed in the upper end of each plate 131 and 132, is used for cold-producing medium is discharged to outdoor unit, thus will be cold-producing medium by this pipe 133 be discharged to outdoor unit.

In addition, be used for according to the thermal expansion valve (TXV) 138 of the temperature of cold-producing medium control cold-producing medium stream and be used for being installed in refrigerant inlet pipe 134 to the distributor 139 of each refrigerant inlet 136 assignment system cryogens.

Simultaneously, air blast 120 is arranged on the below of heat exchanger 130, and the outlet of air blast 120 is set to the upside towards this indoor heat converter 130.

Structure thus, cold-producing medium repeatedly experiences a series of processes: by the cold-producing medium of compressor compresses when by outdoor heat converter, peripherad air is emitted heat, be converted into the liquefied refrigerant of HTHP thus, the liquefied refrigerant of this HTHP is directed to TXV 138 through refrigerant inlet pipe 134, thereby be depressurized and expand, cold-producing medium by this TXV138 imports to indoor heat converter 130 by this refrigerant inlet 136, and be evaporated by the heat around absorbing, and become the gaseous refrigerant of low-temp low-pressure thus, be drawn in the compressor once more by refrigerant outlet 137 and refrigerant outlet pipe 135 then.

At this moment, air blast 120 is driven together.Thus, room air imports in this housing 110 by this air suction portion 112, and carries out heat exchange by contacting with this indoor heat converter 130, is discharged to the outside of this housing 110 then by this air discharge portion 114.

And in heating operation, cold-producing medium moves with the order opposite with kind of refrigeration cycle, and indoor heat converter 130 is used as a condenser, thus heat rooms.

Simultaneously, because air blast 120 is arranged on the below of indoor heat converter 130, the air of being sent by air blast 120 is flowed towards the upper end by the lower end of plate 131 and 132.Here, because that the distance between the plate 131 and 132 becomes from top to bottom gradually is big, from the lower end to the upper end, narrow down gradually from the gas channel of air blast 120.Therefore, from the air velocity of this air blast 120 in the upper end side of plate 131 and 132 than lower end side height in plate 131 and 132.

Yet, in the indoor unit of traditional air-conditioning with this spline structure, because cold-producing medium is directed to the refrigerant inlet 136 of the lower end of this plate 131 and 132, by this pipe 133, be discharged to the refrigerant outlet 137 of the upper end of this plate 131 and 132, therefore flow through plate 131 and 132 upper ends cold-producing medium by with the heat exchange of air, to a certain extent by overheated undesirably.Therefore although the air speed of passing this plate 131 and 132 upper ends is higher than the speed that it passes plate 131 and 132 lower ends, in this plate 131 and 132 upper ends, the heat exchange between air and the cold-producing medium can not effectively be carried out.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of air-conditioning, it can be by being used for cold-producing medium is imported the refrigerant inlet of in-room switch in position installation one, in the flowing velocity of the air of this position speed greater than the refrigerant outlet position, improve the heat exchanger effectiveness between cold-producing medium and the air, and improve refrigeration and heating efficiency.

In order to realize these and other advantage according to the object of the invention, as this broadly as described in, the invention provides a kind of indoor unit of air-conditioning, comprising: be arranged on the air blast in the housing; With a heat exchanger, be used between cold-producing medium and the air that blows out by this air blast, carrying out heat exchange, described heat exchanger is connected to the refrigerant discharge leader that is used to import the refrigerant inlet pipe of cold-producing medium and is used for discharging refrigerant, and wherein the refrigerant inlet pipe is connected to the higher side of flow velocity of air this heat exchanger, that flow through this heat exchanger; The flow velocity that this refrigerant outlet pipe is connected to air this heat exchanger, that flow through this heat exchanger is lower than a side of the air velocity of this refrigerant inlet pipe.

In conjunction with the drawings the present invention is carried out following detailed, above-mentioned and other purposes of the present invention, feature, aspect and advantage will become more obvious.

Description of drawings

Following accompanying drawing provides further to be understood the present invention, and constitutes the part of this specification, with the text description part embodiments of the invention is described together, so that explain principle of the present invention.Wherein:

Fig. 1 shows the decomposition diagram of the indoor unit of traditional air-conditioning;

Fig. 2 shows the schematic diagram of traditional air conditioner indoor unit;

Fig. 3 shows the decomposition diagram according to the indoor unit of air-conditioning of the present invention; And

Fig. 4 and Fig. 5 show the schematic diagram according to air conditioner indoor unit of the present invention.

The specific embodiment

To describe the preferred embodiments of the present invention in detail below, its example is shown in the accompanying drawing.

As shown in Figure 3 and Figure 4, comprise according to the indoor unit of air-conditioning of the present invention: a housing 10, it has an air discharge portion 14 that is arranged on the air suction portion 12 of housing 10 front sides and is positioned at housing 10 upsides; One is installed in the air blast 20 of housing 10 inside, is used for sucking and discharging air; With an indoor heat converter 30 that is installed in housing 10 inside, be used to make that blow by air blast 20 and air by this indoor heat converter 30 and cold-producing medium between carry out heat exchange.

Indoor heat exchange unit 30 is A coil-type heat exchangers, and it has a pair of plate 31 and 32.As for this plate 31 and 32, a plurality of pipes 33 that are connected respectively to outdoor unit, refrigerant inlet pipe 34 and refrigerant outlet pipe 35, thus cold-producing medium circulated therein are installed in respectively wherein, because the upper end of this plate 31 and 32 links together, and their lower end is separated from each other, and this plate 31 and 32 has a predetermined angle.

Here, in the upper end that plate 31 connects together with 32, the flow velocity of air is greater than the flow velocity of lower end.Therefore, in order to improve the flow through cold-producing medium of this plate 31 and 32 and the heat exchanger effectiveness between the air, the refrigerant inlet 36 that is connected to refrigerant inlet pipe 34 is installed in the upper end of each plate 31 and 32, and the refrigerant outlet 37 that is connected to refrigerant outlet pipe 35 is installed in the lower end of each plate 31 and 32.

Equally, be used for according to the thermal expansion valve (TXV) 38 of the temperature of cold-producing medium control cold-producing medium stream and be used for being installed in refrigerant inlet pipe 34 to the distributor 39 of each refrigerant inlet 36 assignment system cryogens.

Simultaneously, air blast 20 is arranged on the proximity of the upside of heat exchanger 30 and compares, and more is adjacent to the position of heat exchanger 30 downsides, and the outlet of air blast 20 is set to the upside towards this indoor heat converter 30.Such air blast 20 is connected to the blower motor (not shown) and forms by belonging to a turbo-blower in the cfentrifugal blower, to suck, to compress and to discharge this room air.

Refrigerant distributor 39 is equally to each refrigerant inlet 36 assignment system cryogen, and the pipe that is connected to refrigerant distributor 39 preferably has at least 5 centimetres or longer vertical length.

Simultaneously, as shown in Figure 5, preferably, one cross valve is installed, it is connected to this refrigerant inlet pipe 34 and refrigerant outlet pipe 35, is used for according to heating circulation and kind of refrigeration cycle, and conversion is by the circulation of the cold-producing medium of this compressor discharge, make and to carry out refrigerating operation, also can heat operation according to indoor unit of the present invention.

Structure thus, cold-producing medium repeatedly experiences a series of processes: refrigerant compressed is by outdoor heat converter the time by the drive compression machine, peripherad air is emitted heat, be converted into the liquefied refrigerant of HTHP thus, the liquefied refrigerant of this HTHP is directed to TXV 38 through refrigerant inlet pipe 34, thereby be depressurized and expand, cold-producing medium by this TXV38 imports to indoor heat converter 30 by this refrigerant inlet 36, be evaporated by the heat around absorbing, and become the gaseous refrigerant of low-temp low-pressure thus, be drawn in the compressor once more by refrigerant outlet 37 and refrigerant outlet pipe 35 then.

At this moment, air blast 20 is driven together.Thus, room air imports in this housing 10 by this air suction portion 12, and carries out heat exchange by contacting with this indoor heat converter 30, is discharged to the outside of this housing 10 then by this air discharge portion 14.

And in heating operation, cold-producing medium moves with the order opposite with kind of refrigeration cycle, and indoor heat converter 130 is used as a condenser, thus heat rooms.

Simultaneously, because air blast 20 is arranged on the below of indoor heat converter 30, the air of being sent by air blast 120 is flowed towards the upper end by the lower end of plate 31 and 32.Here, because the distance between the plate 31 and 32 becomes big from top to bottom gradually.Therefore the passage from the air-flow of air blast 20 narrows down from the lower end to the upper end gradually.Therefore, the air velocity from this air blast 20 compares at the lower end of plate height in the upper end of plate 31 and 32.

At this moment, because this refrigerant inlet pipe 34 is connected to the upper end of this plate 31 and 32, cold-producing medium is directed to this higher plate 31 of the flow velocity of air and 32 upper end, and carries out heat exchange with air when flowing through pipe 33.Because refrigerant outlet pipe 35 is connected to the lower end of this plate 31 and 32, when discharging from the lower end of this plate 31 and 32 by managing 33 cold-producing mediums that carried out heat exchange, at this place, the flow velocity of air is lower again.Therefore, the heat exchanger effectiveness of cold-producing medium and air can significantly improve at the higher position of air velocity.

In indoor unit according to air-conditioning of the present invention, refrigerant inlet pipe and refrigerant outlet pipe are connected respectively to this indoor heat converter, make cold-producing medium be directed to flow through the higher position of speed of air of this indoor heat converter, and be discharged from the lower position of air velocity.Therefore, can improve the heat exchanger effectiveness between heat exchanger and the air, and can be by refrigeration that improves air and the performance that heating effect improves air-conditioning.In addition, by reducing the running time of air-conditioning, can save power consumption.

The invention is intended to by cold-producing medium being imported to air, and cold-producing medium is discharged from the lower position of air velocity, and improve heat exchanger effectiveness between cold-producing medium and the air with the flow through position of heat exchanger of higher flow velocity.Therefore, should understand the indoor unit that the above embodiments not only are confined to above-mentioned A coil-type, but may be used on any indoor unit with heat exchanger, wherein the different parts at heat exchanger has different air velocitys.

Claims (10)

1, a kind of indoor unit of air-conditioning comprises:
One air blast, this air blast be arranged in the housing and
One heat exchanger, this heat exchanger are used for carrying out heat exchange between cold-producing medium and the air that blowed by this air blast, and described heat exchanger is connected to the refrigerant outlet pipe that is used to import the refrigerant inlet pipe of cold-producing medium and is used for discharging refrigerant,
Wherein, this refrigerant inlet pipe is connected to the higher side of flow velocity of air this heat exchanger, that flow through this heat exchanger; The flow velocity that this refrigerant outlet pipe is connected to air this heat exchanger, that flow through this heat exchanger is lower than a side of the air velocity of this refrigerant inlet pipe.
2, indoor unit as claimed in claim 1, wherein, this heat exchanger comprises a pair of plate, has the pipe that a cold-producing medium is flowed through in the plate, this to first end of plate in abutting connection with so that this is to being set to be a predetermined angle between the plate.
3, indoor unit as claimed in claim 2, wherein, this refrigerant inlet pipe is connected to first end of each plate.
4, indoor unit as claimed in claim 3, wherein, this refrigerant outlet pipe is connected to second end of each plate, and described second end is relative with this first end of this plate.
5, indoor unit as claimed in claim 1, wherein, this heat exchanger is an A coil-type heat exchanger, and this A coil-type heat exchanger has a pair of plate, and the lower end of this plate is separated from each other because the upper end of plate is connected to each other, and this is set to be a predetermined angular to plate; And this air blast is arranged to make this air velocity to each upper end of plate to be higher than this air velocity to each lower end of plate.
6, indoor unit as claimed in claim 5, wherein, this refrigerant inlet pipe is connected to the upper end of each plate.
7, indoor unit as claimed in claim 5, wherein, this refrigerant outlet pipe is connected to the lower end of each plate.
8, indoor unit as claimed in claim 5, wherein, this air blast is arranged on the below of this heat exchanger.
9, indoor unit as claimed in claim 1 wherein, also is equipped with a cross valve, and this cross valve is connected to this refrigerant inlet pipe and this refrigerant outlet pipe, is used for coming circulating refrigerant according to heating circulation and kind of refrigeration cycle.
10, indoor unit as claimed in claim 9 wherein, is installed a thermal expansion valve on this refrigerant inlet pipe, this thermal expansion valve is used for controlling cold-producing medium stream according to refrigerant temperature.
CNB2005100070255A 2004-08-20 2005-01-31 Indoor unit of air conditioner CN100351575C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020040066058 2004-08-20
KR1020040066058A KR100608682B1 (en) 2004-08-20 2004-08-20 Indoor unit for air conditioner

Publications (2)

Publication Number Publication Date
CN1737435A CN1737435A (en) 2006-02-22
CN100351575C true CN100351575C (en) 2007-11-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100070255A CN100351575C (en) 2004-08-20 2005-01-31 Indoor unit of air conditioner

Country Status (4)

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US (1) US20060037354A1 (en)
EP (1) EP1628081B1 (en)
KR (1) KR100608682B1 (en)
CN (1) CN100351575C (en)

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CN101688697B (en) 2007-04-24 2012-10-03 开利公司 Refrigerant vapor compression system with dual economizer circuits
WO2008130358A1 (en) * 2007-04-24 2008-10-30 Carrier Corporation Transcritical refrigerant vapor compression system with charge management
US8424326B2 (en) * 2007-04-24 2013-04-23 Carrier Corporation Refrigerant vapor compression system and method of transcritical operation
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KR20110139834A (en) * 2010-06-24 2011-12-30 삼성전자주식회사 Indoor unit of air conditioner
KR101326236B1 (en) * 2011-10-14 2013-11-11 엘지전자 주식회사 Outdoor unit for air conditioner
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Also Published As

Publication number Publication date
CN1737435A (en) 2006-02-22
US20060037354A1 (en) 2006-02-23
EP1628081B1 (en) 2016-04-06
KR100608682B1 (en) 2006-08-08
KR20060017396A (en) 2006-02-23
EP1628081A3 (en) 2008-01-02
EP1628081A2 (en) 2006-02-22

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