CN101135477A - Water-cooled air conditioner and method of controlling the same - Google Patents

Water-cooled air conditioner and method of controlling the same Download PDF

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Publication number
CN101135477A
CN101135477A CNA2007101034630A CN200710103463A CN101135477A CN 101135477 A CN101135477 A CN 101135477A CN A2007101034630 A CNA2007101034630 A CN A2007101034630A CN 200710103463 A CN200710103463 A CN 200710103463A CN 101135477 A CN101135477 A CN 101135477A
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CN
China
Prior art keywords
water
pipeline
flows
hydraulic pressure
heat exchanger
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CNA2007101034630A
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Chinese (zh)
Inventor
金寅圭
具滋亨
阵深元
申修沇
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN101135477A publication Critical patent/CN101135477A/en
Pending legal-status Critical Current

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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/004—Outdoor unit with water as a heat sink or heat source
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Abstract

A water-cooled air conditioner and a method controlling the same are provided. The water-cooled air conditioner includes a compressor for compressing refrigerant, a plate-shaped heat exchanger where the refrigerant compressed by the compressor is heat exchanged with water, water inflow and outflow pipes for guiding inflow and outflow of the water, and a water detecting unit for detecting if the water exists in the heat exchanger. The water inflow and outflow pipes are provided in the heat exchanger. The water detecting unit is provided at a side of one of the water inflow and outflow pipes.

Description

The method of water-cooled air conditioner and this air conditioner of control
Technical field
The present invention relates to a kind of water-cooled air conditioner, relate in particular to a kind of have be used for making refrigerant and water carry out the water-cooled heat exchanger of heat exchange and be used to survey the probe unit that whether water exists or whether water flow at water-cooled heat exchanger.The invention further relates to a kind of method of controlling this water-cooled air conditioner.
Background technology
Normally, air conditioner is designed to suck warm room air (b) by (a) makes warm room air will be discharged into the temperature that the interior space reduces the interior space through the air of heat exchange with the refrigerant heat exchange and (c), perhaps increases the temperature of the interior space by contrary the circulation.Air conditioner provides the cooling circulation, and in this circulation, refrigerant circulates by compressor, condenser, expansion valve and evaporimeter in order.
Recently, along with the raising of quality of life, and in response to client's demand, except air cooling function, air conditioner also provides multiple other functions, and such as air purifying function, this function sucks airborne foreign body and will purify air after filtering out and enter the interior space will being included in; Perhaps dehumidification function, this function is being used for making moist suction air dry air to be drained into the interior space after becoming dry air.
Simultaneously, air conditioner is divided into outdoor unit (being called the heat release unit) that is installed in the exterior space and the indoor unit (being called heat absorbing units) that is installed in the interior space usually.Outdoor unit comprises condenser (second heat exchanger) and compressor, and indoor unit comprises evaporimeter (first heat exchanger).
Air conditioner is categorized as split type air conditioner usually, and outdoor and indoor unit is wherein installed discretely; And integral air conditioner, outdoor and indoor unit is wherein integrally installed.Split type air conditioner is used in the advantage aspect installing space and the noise widely owing to it.
In order to reduce excessive energy consumption during the air conditioning of room air, people have used and research and development water-cooled air conditioner on one's own initiative.
Be different from the condenser (second heat exchanger) of refrigerant by traditional ventilation type air conditioner of outdoor air cooling, the refrigerant of water-cooled air conditioner is by water cooling.Just, water and refrigerant do not mix mutually but pass through second heat exchanger discretely.
In the water-cooled air conditioner, when water and refrigerant flow and when not mixing mutually, water and refrigerant carry out heat exchange mutually discretely along water cooled condenser (second heat exchanger).
When refrigerant with moisture is liftoff when flowing through water cooled condenser (second heat exchanger), in water cooled condenser, carry out heat exchange between refrigerant and the water.
In traditional water cooled condenser (second heat exchanger), be not provided for surveying the unit whether water exists and flow.Therefore, when in air conditioner, not having water, can not realize the air-conditioning adjusting.This will make reliability of products worsen.
And when water froze or leaks, this can cause the destruction of water cooled condenser and therefore increase maintenance cost.
Summary of the invention
Therefore, the method that the purpose of this invention is to provide a kind of water-cooled air conditioner and control this air conditioner, this air conditioner has eliminated basically because the restriction of prior art and one or more problems that shortcoming causes.
The purpose of this invention is to provide a kind of water-cooled air conditioner, thereby this probe unit is used for surveying whether the heat exchanger by mutual heat exchange exists water in refrigerant and water circulation institute with water-level detecting unit.
Another object of the present invention provides a kind of water-cooled air conditioner with current probe unit, and whether pass through the heat exchanger of mutual heat exchange in refrigerant and water circulation mobile thereby this probe unit is used for surveying water.
Another object of the present invention provides a kind of method of controlling the water-cooled air conditioner, thereby whether whether this method be present in heat exchanger and survey water and flow in heat exchanger and prevent the infringement of heat exchanger by using water-level detecting unit and current probe unit to survey water.
Other advantages of the present invention, purpose and feature can partly obtain by following specification, and by studying following specification, those skilled in the art can know and learn content, perhaps can obtain by practice of the present invention.Purpose of the present invention and other advantages can realize and acquisition by the structure, its claim and the accompanying drawing that particularly point out in specification.
In order to realize these purposes and other advantages, according to purpose of the present invention,, provide a kind of water-cooled air conditioner here as realizing and explanation widely, comprising: the compressor that is used for compression refrigerant; Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange; Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger; And being used for surveying the water probe unit whether water is present in described heat exchanger, described water probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
In another aspect of this invention, provide a kind of water-cooled air conditioner, comprising: the compressor that is used for compression refrigerant; Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange; Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger; And whether being used for surveying water at described heat exchanger flowing water flow probe unit, described current probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
In another aspect of this invention, provide a kind of water-cooled air conditioner to comprise: the compressor that is used for compression refrigerant; Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange; Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger; Be used for surveying the water probe unit whether water is present in described heat exchanger, described water probe unit is arranged on described water and flows into and flow out one of them a side of pipeline; And whether being used for surveying water at described heat exchanger flowing water flow probe unit, described current probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
In another aspect of this invention, provide a kind of method of controlling the water-cooled air conditioner, comprising: survey and to be arranged on heat exchanger one side and to flow into the water of the inflow that is used to guide water and outflow and flow out one of them water level of pipeline; Water level and the reference level surveyed are compared; And the driving of controlling compressor according to the comparative result between described detection water level and the described reference level.
In another aspect of this invention, provide a kind of method of controlling the water-cooled air conditioner, comprising: survey and be arranged on heat exchanger one side to be used to guide inflow and the water inflow of outflow and the hydraulic pressure of outflow pipeline of water; The hydraulic pressure of relatively being surveyed and with reference to the pressure reduction between the hydraulic pressure; And according to described pressure reduction and described driving with reference to the control of the comparative result between hydraulic pressure compressor.
In another aspect of this invention, provide a kind of method of controlling the water-cooled air conditioner, comprising: survey and be arranged on heat exchanger one side to be used to guide inflow and the water inflow of outflow and the water temperature of outflow pipeline of water; The water temperature of relatively being surveyed and with reference to the temperature difference between the water temperature; And according to the described temperature difference and described driving with reference to the control of the comparative result between water temperature compressor.
In another aspect of this invention, provide a kind of method of controlling the water-cooled air conditioner, comprising: survey and to be arranged on heat exchanger one side and to flow into the water of the inflow that is used to guide water and outflow and flow out one of them water level of pipeline; Compare water level and the reference level surveyed; Driving according to the control of the comparative result between described detection water level and described reference level compressor; Whether the current probe unit detection water that use is arranged on described heat exchanger one side flows in described heat exchanger; And according to the water further driving of the described compressor of control of whether flowing.
According to above-mentioned water-cooled air conditioner, be used for surveying water and whether be present in refrigerant and water and circulate and be arranged on the side of second heat exchanger with the water-level detecting unit of second heat exchanger of mutual heat exchange.That is, whether float switch is used as the water-level detecting unit of measuring water level, survey water thus and exist.Therefore, can prevent the overheated of second heat exchanger, this overheated may when having water existence or water level to be lower than predetermined extent, generation.
In addition, according to above-mentioned water-cooled air conditioner, be used for surveying water and whether circulate and be arranged on the side of second heat exchanger with the second heat exchanger flowing water flow probe unit of mutual heat exchange at refrigerant and water.That is, cooling-water temperature sensor and hydraulic pressure sensor are set to survey whether flowing water flow probe unit of water.Therefore, whether whether the user can be identified in and exist foreign body or water frozen in second heat exchanger, prevents in advance that thus air conditioner from breaking down.
Should be appreciated that aforementioned general description of the present invention and detailed description subsequently are exemplary and indicative and are intended to further explain the invention of claim qualification.
Description of drawings
Accompanying drawing is used to provide to further understanding of the present invention and comprises and constitute the application's a part, and exemplary (respectively) of the present invention embodiment and specification are used to illustrate principle of the present invention.In the accompanying drawings:
Fig. 1 is the aerial view that the state in the building that is installed in according to the water-cooled air conditioner of one embodiment of the present invention is shown;
Fig. 2 is the view that flows that the empty G﹠W in the building when operating according to the monoblock type water-cooled air conditioner of one embodiment of the present invention is shown;
Fig. 3 is the aerial view that a plurality of water-cooled air conditioners that another embodiment according to the present invention is shown are installed in the state in the building;
Fig. 4 is the perspective view according to the outdoor unit of the water-cooled air conditioner of one embodiment of the present invention;
Fig. 5 is the decomposition diagram of internal structure of the outdoor unit of Fig. 4;
Fig. 6 is the view that flows that is illustrated in according to refrigerant during the air cooling down operation of the water-cooled air conditioner of one embodiment of the present invention and water;
Fig. 7 is the zoomed-in view that illustrates according to the float switch of the water-cooled air conditioner of one embodiment of the present invention;
Fig. 8 is used to control the block diagram of use according to the method for the empty machine of water-cooled of the float switch of one embodiment of the present invention;
Fig. 9 is used to control the block diagram of use according to the method for the water-cooled air conditioner of the hydraulic pressure sensor of one embodiment of the present invention;
Figure 10 is used to control the block diagram of use according to the method for the water-cooled air conditioner of the cooling-water temperature sensor of one embodiment of the present invention;
Figure 11 is used to control use according to the two the block diagram of method of water-cooled air conditioner of the float switch of one embodiment of the present invention and flow detection unit;
Figure 12 is illustrated in according to the refrigerant of heating mode operating period of the water-cooled air conditioner of one embodiment of the present invention and the explanatory view that flows of water.
The specific embodiment
Be described in detail now with reference to the preferred embodiments of the present invention, the example is shown in the drawings.
Fig. 1 illustrates the aerial view of the state in the building that is installed in according to the water-cooled air conditioner of one embodiment of the present invention, and Fig. 2 is the view that flows that the empty G﹠W in the building when operating according to the monoblock type water-cooled air conditioner of one embodiment of the present invention is shown.
With reference to Fig. 1 and 2, the water-cooled air conditioner is installed in the enclosure space 52 that is formed at building 50.This enclosure space 52 is isolated fully with the outside of building 50 and is communicated with the interior space 62 by air intake 60, forms the suction room air thereby this air intake passes ceiling.
Conduit 70 is connected to the interior space 62, thereby the air that allows to be carried out heat exchange by the water-cooled air conditioner enters the interior space 62.Just, the water-cooled air conditioner comprises and is used to the indoor unit 100 that aspirates room air and discharge room air after room air is carried out heat exchange and is connected to the outdoor unit 200 of indoor unit 100 by refrigerant tube (Fig. 3 130) that this outdoor unit allows to carry out heat exchange by refrigerant and water that refrigerant tube is introduced.Conduit 70 allows indoor unit 100 to be communicated with the interior space 62.
Outdoor unit 200 comprises compressor 210, hydraulic accumulator (270 among Fig. 5), second heat exchanger 290 and outdoor linear expansion valve (234 among Fig. 6).Indoor unit 100 comprises first heat exchanger 120 and expansion valve (not shown).
When the water-cooled air conditioner was operated, room air was introduced indoor unit 100 by the air intake 60 that is formed in the building ceiling.For the circulation of this room air, the indoor fan 110 that is used for producing indoor air flow is installed in indoor unit 100.In addition, first heat exchanger 120 is mounted at the downside place of indoor fan 110.
First heat exchanger 120 is arranged to use in first heat exchanger 120 flowing refrigerant and room air to carry out heat exchange.First heat exchanger 120 is connected to second heat exchanger 290 by refrigerant tube 130.
Refrigerant tube 130 is designed to circulating cooling agent between indoor unit 100 and outdoor unit 200.Common liquid pipe (132 among Fig. 6) and common gas pipe (134 among Fig. 6) are arranged between indoor unit 100 and the outdoor unit 200, liquid phase refrigerant flows and this pipe is an independent pipe along the common liquid pipe, and gas phase refrigerant flows and this pipe is an independent pipe along the common gas pipe.
Just, common liquid pipe 132 is connected to first heat exchanger 120 with second heat exchanger 290, and common gas pipe 134 is connected to first heat exchanger 120 with compressor 210.
Though the installation site of indoor unit 100 can change according to the type (monoblock type or separate type) of water-cooled air conditioner, its internal structure is almost completely identical with the internal structure of traditional indoor unit.Therefore, will omit detailed description here to indoor unit 100.
Outdoor unit 200 is arranged on indoor unit 100 belows.The compressor 210 of outdoor unit 200 is with the high temperature and high pressure compression refrigerant.Second heat exchanger 290 of outdoor unit 200 allows the refrigerant that attracts from compressor 210 and the water that imports from the cooling tower 80 that is installed on building 50 tops for example to carry out heat exchange.Second heat exchanger 290 is provided with the water route 202 with the internal communication of cooling tower 80.Water route 202 comprises that water flows into passage 202 ' and flows out passage 202 with water "; water flows into passage 202 ' and is used for the water from cooling tower 80 is directed to second heat exchanger 290, and water flows out passage 202 " be used for and will in by second heat exchanger, 290 inside, carry out the water importing cooling tower 80 of heat exchange with refrigerant.
With reference to Fig. 3 the situation of using a plurality of water-cooled air conditioners is described below.Fig. 3 is the aerial view that a plurality of water-cooled air conditioners that another embodiment according to the present invention is shown are installed in the state in the building.
As shown in Figure 3, when the water-cooled air conditioner was set to a plurality of type, indoor unit 100 was separated from each other with outdoor unit 200 and is connected by refrigerant tube 130.Just, indoor unit 100 is installed on the ceiling of the interior space 62, and outdoor unit 200 is installed in the enclosure space 52.Indoor unit 100 and outdoor unit 200 interconnect by refrigerant tube 130, make that refrigerant is negotiable and allow room air to carry out heat exchange.
The first heat exchanger (not shown) is arranged in the indoor unit 100, and room air is by this first heat exchanger and refrigerant heat exchange.Indoor fan 110 also is arranged to allow the air through heat exchange to enter the interior space 62.
Similar with monoblock type water-cooled air conditioner, a plurality of water-cooled air conditioners comprise second heat exchanger that allows refrigerant and water to carry out heat exchange.Because the refrigerant in second heat exchanger and the circulation of water can realize fully for monoblock type water-cooled air conditioner, so omitted detailed description thereof here.
Below the outdoor unit 200 of a plurality of water-cooled air conditioners will be described by example.
Fig. 4 is the perspective view according to the outdoor unit of the water-cooled air conditioner of one embodiment of the present invention, Fig. 5 is the decomposition diagram of internal structure of the outdoor unit of Fig. 4, and Fig. 6 is illustrated in according to the refrigerant during the air cooling down operation of the water-cooled air conditioner of one embodiment of the present invention and the view that flows of water.
Illustrate in greater detail outdoor unit 200 below with reference to accompanying drawings.
With reference to Fig. 4 to 6, outdoor unit 200 comprise form rectangular parallelepiped protrusion part and the top cover 204 that indoor unit 100 and outdoor unit 200 are separated from each other out, respectively limit the front and rear outward appearance header board 205 and back plate 207, limit left part and the side plate 208 of right part outward appearance and the chassis 209 that is used to support a plurality of parts.
Top cover 204 is positioned at the top of outdoor unit 200, thereby prevents to be introduced into outdoor unit 200 by the air of indoor unit 100.Just, top cover 204 forms the rectangular slab that does not form the hole.
Top cover 204 also is used to support indoor unit disposed thereon 100.Therefore, the feather edge of top cover 204 is provided with the buttress brace 204 ' that is used to strengthen its intensity.
Header board 205 is vertically installed below the front end of top cover 204.Maintenance panel 206 is formed on the central authorities left side and the bottom left/right side of header board 205.Maintenance panel 206 is arranged to when owing to being installed in the inboard that parts in the outdoor unit 200 break down and open outdoor unit 200 when needing repairing.Each of maintenance panel 206 is provided with slit, has only a side that slit is not set.
Therefore, maintenance panel 206 pivots with respect to a side that does not form slit, thereby allows the inner space of outdoor unit 200 to be communicated with the outside, carries out maintenance service thus.
The back left side of side plate 208 contact header boards 205 and back right-hand member.The top of each side plate 208 is provided with a plurality of louvres 208 ', and the heat that the operation by compressor produces dissipates to the outside by this hole.
Though not shown in the drawings, top cover 204, header board 205, back plate 207 and side plate 208 can be provided with connecting hole, common gas pipe 134 and common liquid pipe 132 are connected to indoor unit 100 by these holes.
The lower end of header board 205, back plate 207 and side plate 208 is arranged to contact in chassis 209.A plurality of parts are arranged to support in chassis 209.In particular, compressor 210 is arranged on the central upper portion on chassis 209.
Compressor 210 is arranged to refrigerant boil down to high temp/high pressure state.Compressor 210 is arranged on left side and right side.Just, compressor 210 comprises constant-speed compressor 212 and the inverter compressor 214 of operating and be installed in relative right side with regular speed, the variable velocity heat pump that this inverter compressor is mounted in constant-speed compressor 212 left sides and operates with variable velocity.
Thereby homogeneous fluid hose 216 is installed in constant-speed compressor 212 and inverter compressor 214 is interconnected.Therefore, when one of compressor 212 and 214 lack liquid, the liquid of another compressor will be directed to the compressor that lacks liquid, prevent that thus compressor 210 is destroyed.
Can adopt noise is not that very strong vortex (scroll) compressor is as compressor 210.In particular, can adopt inverter vortex compressor as inverter compressor 214, the RPM of this inverter vortex compressor controls according to load capacity.
Therefore, when the load that is applied to compressor 210 was low, inverter compressor 214 was at first operated.Then, along with the load capacity that is applied to compressor 210 increase gradually and therefore inverter compressor 214 can't bear the load capacity that is increased, constant-speed compressor 212 is operated.
The outlet side of compressor 210 is provided with compressor discharge temperature sensor 217 and oil eliminator 218, and this sensor is surveyed from the temperature of the refrigerant of compressor 210 discharges.Oil eliminator 218 filters the oil that mixes with the refrigerant of discharging from compressor 210 and the oil that allows to be filtered is back to compressor 210.
Just, be used to cool off the oil of the frictional heat that produces in the operating period of compressor 210 and the outlet discharge that refrigerant passes through compressor 210 jointly.The oil that is produced separates in oil eliminator 218 and is back to compressor 210 by oily recovery tube 219.
The outlet of oil eliminator 218 is provided with check valve 232, is used to prevent that refrigerant from refluxing.Just, when having only one to operate in constant-speed compressor 212 and the inverter compressor 214, check valve 232 prevents that refrigerant from flowing into another in the compressor.
Oil eliminator 218 is designed to be communicated with four-way valve 240 by a pipe.Four-way valve 240 is arranged to operator scheme (cooling or heating mode) the conversion cryogen flow according to air conditioner.Four-way valve 240 comprises inlet 242, first outlet 244, second outlet the 246 and the 3rd outlet 248.These outlets are connected to the outlet of compressor 210 (or oil eliminator 218), inlet, second heat exchanger 290 and the indoor unit 100 of compressor 210 (or hydraulic accumulator 270) respectively.
Therefore, the refrigerant from inverter compressor 214 and constant-speed compressor 212 discharges is collected in a position and is directed to four-way valve 240 then.The outlet of four-way valve 240 is provided with high pressure sensor 240 ', is used to survey the pressure from the refrigerant of compressor 210 discharges.
Simultaneously, heating pipe 250 is walked around four-way valve 240 and is installed, thereby the part refrigerant that allows to be introduced into four-way valve 240 directly is directed to hydraulic accumulator 270, and hydraulic accumulator 270 will be described in detail later.
Heating pipe 250 is arranged in air conditioner operating period directly is directed to the high-pressure refrigerant of the outlet side of compressor 210 heating pipe 250 when needing to increase the pressure of the low-pressure refrigerant of introducing hydraulic accumulator 270 inlet.Thereby hot-blast valve 252 is installed in opening and closing heating pipe 250 on the heating pipe 250.
Subcooler 260 is installed in the last right rear end on chassis 209.Subcooler 260 is arranged to further cooling is carried out heat exchange in second heat exchanger 290 refrigerant.Subcooler 260 is formed on the part of the outdoor liquid line 262 of the outlet that is connected to second heat exchanger 290.
Subcooler 260 forms double pipe structure, and just, subcooler 260 comprises the interior pipe that is communicated with outdoor liquid-phase tube 262 and around the outer tube of pipe in this.Reverse dispatch tube 264 goes out interruption-forming branch from subcooler 260.Reverse dispatch tube 264 is provided with the subcooler expansion valve 266 that is used for cooling off by expansion process this refrigerant.
Then, a part of refrigerant of discharging from subcooler 260 is introduced into reverse dispatch tube 264 and cools off in by subcooler expansion valve 266.Thereby the refrigerant through cooling off flows back to further by subcooler 260 and cools off.The backflow refrigerant subcooler 260 of discharging from subcooler 260 is supplied to hydraulic accumulator 270 once more and is circulated.
Simultaneously, the outlet of subcooler 260 is provided with liquid line temperature sensor 263, is used to survey the temperature from the refrigerant of outdoor unit 200 discharges.The outlet of subcooler expansion valve 266 is provided with subcooler inlet sensor 265, thereby surveys the temperature of the backflow refrigerant that flows into subcooler 260.From subcooler 260 discharge backflow refrigerant institute along reverse dispatch tube 264 be provided with subcooler and export sensor 267.
Therefore, the refrigerant by second heat exchanger 290 flows through core, and the cryogenic coolant that expands by the expansion valve (not shown) flows with relative direction at outlet side, reduces the temperature of refrigerant thus further.
Hydraulic accumulator 270 is installed in the left part (that is the left side of inverter compressor 214) on chassis 290.Hydraulic accumulator 270 is used to filter out liquid phase refrigerant and only allows gas phase refrigerant to be introduced into compressor 210.
If the liquid phase refrigerant of guiding and not being evaporated from indoor unit 100 directly is introduced into compressor 210, be used for so compressor 210 generations of refrigerant boil down to high temperature and high pressure gas phase state being transshipped and therefore suffering damage.
Therefore, owing to the liquid phase refrigerant of introducing hydraulic accumulator 270 and be not evaporated is heavier relatively than gas phase refrigerant,, and have only gas phase refrigerant to be introduced into compressor 210 so liquid phase refrigerant precipitates (settle down) in the bottom of hydraulic accumulator 270.
The inlet of hydraulic accumulator 270 is provided with inlet tube temperature sensor 272 and the low pressure sensor 274 that is used to survey the temperature of introducing refrigerant.
Simultaneously, control cabinet 280 is installed in the rear portion of header board 205.Control cabinet 280 forms rectangular parallelepiped protrusion part and optionally cuts out by the control lid 282 that is fixed on control cabinet 280 upper ends pivotally.
Control assembly such as transformer, printed circuit board (PCB) and capacitor is arranged in the control cabinet 280, forms the rear surface that gelled heat-sink unit 284 is formed on control cabinet 280.
Second heat exchanger 290 is arranged on the rear side of control cabinet 280, thereby allows refrigerant and water to carry out heat exchange mutually when passing wherein.Second heat exchanger 290 forms rectangular parallelepiped protrusion part.
Thereby a plurality of water flow pipes and cryogen flow pipe are arranged on and prevent in second heat exchanger 290 that refrigerant and water from mixing mutually.Water and cryogen flow pipe alternately are arranged to located adjacent one another, thereby can realize the heat exchange between refrigerant and the water effectively.
Just, cryogen flow pipe (not shown) is arranged to when water pipe is around the cryogen flow pipe around the water pipe (not shown).Therefore, preferably, water and refrigerant are designed to aspect cross sectional shape and size mutually the same.For example, water and cryogen flow are tubular to become conventional hexahedron, thereby can be arranged to honeycomb shape.
The front surface of second heat exchanger 290 is provided with water inflow pipe 292 and water effuser 293, and by these pipes, water is introduced into second heat exchanger 290 or discharges from second heat exchanger 290; And be provided with refrigerant inflow pipe 294 and refrigerant outflow pipe 295, by these pipes, refrigerant is introduced into second heat exchanger 290 or discharges from second heat exchanger 290.
Just, water inflow pipe 292 and water effuser 293 are formed on the preceding upper right quarter of second heat exchanger 290 and bottom and extend into second heat exchanger, thereby guiding water flows into second heat exchanger 290 and discharges from second heat exchanger 290.Water inflow pipe 292 is positioned at the below of water effuser 293.
In addition, thus refrigerant flows into pipe 294 and refrigerant to flow out pipe 295 and is formed on the preceding upper left quarter of second heat exchanger 290 and bottom and extends into that second heat exchanger, 290 guiding refrigerant flow into second heat exchanger 290 and from the discharge of second heat exchanger 290.Refrigerant inlet pipe 294 is positioned at the below of water effuser 295.
When water and refrigerant were introduced into second heat exchanger 290, water flowed to downside along the water flow pipes that is arranged in second heat exchanger 290 from upside.The refrigerant that is introduced into second heat exchanger 290 flow to upside along the flow of refrigerant pipe from downside.
Along with water and refrigerant flow along direction respect to one another in second heat exchanger 290, the heat exchange efficiency between water and the refrigerant is maximized.
Simultaneously, as a feature of the present invention, cooling-water temperature sensor 360 is arranged on each of outer surface of the outer surface of water effuser 293 and water inflow pipe 292.
Cooling-water temperature sensor 360 is arranged to survey the temperature by the water of second heat exchanger 290.Cooling-water temperature sensor 360 comprises the outflow temperature sensor 364 on inflow temperature sensor 362 that is arranged on water inflow pipe 292 outer surfaces and the outer surface that is arranged on water effuser 293.
Therefore, flow into temperature sensor 362 and survey the temperature of introducing the water of second heat exchanger 290 by water inflow pipe 292.Flowing out cooling-water temperature sensor 364 surveys by the temperature of water effuser 293 from the water of second heat exchanger, 290 discharges.
Thereby cooling-water temperature sensor 360 is designed to by optionally stopping the operation of compressor 210 according to determined by the temperature of inflow and outflow temperature sensor 362 and 364 detections whether water flows in second heat exchanger 290.
Just, flow into temperature sensor 362 and be electrically connected to the printed circuit board (PCB) (not shown), thereby the temperature information that detects is sent to printed circuit board (PCB) with outflow temperature sensor 364.
Printed circuit board (PCB) by calculate by flow into temperature sensor 362 and flow out between the temperature that temperature sensor 364 detects difference (that is, the water temperature with water inflow pipe 292 deducts from the water temperature of water effuser 293) and with this difference and reference temperature poor (3 ℃) thus compare the operation that optionally stops compressor 210.
In more detail, when the water-cooled air conditioner with refrigerating mode operation and by flow ipe 292 and the temperature difference of water that flows out pipeline 293 during less than 3 ℃, promptly think and between refrigerant in second heat exchanger 290 and the water heat exchange do not take place.This is considered to the operation that water does not flow and therefore printed circuit board (PCB) stops compressor 210.
When along flow ipe 292 with when flowing out the temperature difference between the water that pipeline 293 flows, determine that water does not flow in second heat exchanger 290 less than 3 ℃.That is, when having the temperature difference between refrigerant in the heat exchanger 290 and the water, flow through between water and the water that flows through after second heat exchanger 290 before second heat exchanger 290 temperature difference probably above 3 ℃.Therefore, when along flow ipe 292 with when flowing out the temperature difference between the water that pipeline 293 flows, determine that water does not flow in second heat exchanger 290 less than 3 ℃.
When determining along flow ipe 292 and flow out the temperature difference between the water that pipeline 293 flows,, printed circuit board (PCB) informs that user's water does not flow in second heat exchanger thereby sending signal to display (not shown) or buzzer less than 3 ℃.
Every side at flow ipe 292 and outflow pipeline 293 is provided with the current probe unit, and whether this unit uses differential water pressures to survey water mobile in second heat exchanger 290.The current probe unit can form multiple structure.
In exemplary embodiment of the present invention, hydraulic pressure sensor 340 and cooling-water temperature sensor 360 are set to the current acquisition sensor.But the present invention is not limited to this situation.For example, can use hydraulic pressure sensor 340 and cooling-water temperature sensor 360 wherein at least one.
Hydraulic pressure sensor 340 is arranged to survey along flow ipe 292 and is flowed out the pressure of the water that pipeline 293 flows.Hydraulic pressure sensor 340 comprises the inflow hydraulic pressure sensor 342 and the outflow pressure sensor 344 that is arranged on the outer surface that flows out pipeline 293 on the outer surface that is arranged on flow ipe 292.
Be similar to cooling-water temperature sensor 360, hydraulic pressure sensor 340 is designed to the hydraulic pressure data are sent to printed circuit board (PCB).Printed circuit board (PCB) calculate the pressure differential between the pressure of surveying by feed pressure sensor 342 and outflow pressure sensor 344 and will calculate pressure reduction with compare with reference to pressure reduction.
That is, feed pressure sensor 342 and outflow pressure sensor 344 are electrically connected to the printed circuit board (PCB) (not shown), thereby the hydraulic pressure data that will survey gained are sent to printed circuit board (PCB).
Printed circuit board (PCB) by calculate differential water pressures between the hydraulic pressure of surveying by feed pressure sensor 342 and outflow pressure sensor 344 (that is, the hydraulic pressure of water inflow pipe 292 being deducted) from water flows out the hydraulic pressure of pipeline 293 and will calculate pressure reduction with compare the operation that optionally stops compressor 210 with reference to pressure reduction (20kPa).
In more detail, in the refrigerating mode operating period of water-cooled air conditioner, when the differential water pressures that flows through flow ipe 292 and the water that flows out pipeline 293 surpasses 20kPa, thereby printed circuit board (PCB) does not have the mobile operation that stops the water-cooled air conditioner by determining water because exterior object stops up second heat exchanger 290.In addition, in the heating mode operating period of water-cooled air conditioner, when the differential water pressures that flows through outflow pipeline 292 and the water that flows out pipeline 293 surpasses 20kPa, thereby printed circuit board (PCB) is by determining that water is owing to freeze there is not the mobile operation that stops the water-cooled air conditioner in second heat exchanger 290.
In this point, thereby printed circuit board (PCB) transmits signals to the display (not shown) or buzzer informs that user's water does not flow effectively in second heat exchanger 290.
On the other hand, when the differential water pressures of water that flows through flow ipe 292 and flow out pipeline 293 during,, printed circuit board (PCB) allow the water-cooled air conditioner normally to operate thereby being applied to the water-cooled air conditioner by determining water to flow effectively with electric energy less than 20kPa.
Simultaneously, thus the water-level detecting unit is arranged on a side that water flows out pipeline 293 determines by the water level of surveying water and flowing out pipeline 293 whether water is present in second heat exchanger 290.This water-level detecting unit can form various structures.
In following specification, the situation of float switch 320 as the water-level detecting unit used in explanation.Fig. 7 is mounted in the zoomed-in view of the float switch 320 in the water-cooled air conditioner.
As shown in Figure 7, float switch 320 is designed so that to survey water level with buoyancy.Float switch 320 is fixed on water and flows out on the pipeline 293, and the upside that flows out the periphery of pipeline 293 from water passes and extends to downside simultaneously.Buoy 322 is arranged in the float switch 320.
That is, buoy 322 is filled with air, thereby vertically moves up and down according to water level.Thereby water flows out the outside and the inboard of pipeline 293 is provided with the top that nut 324 is coupled to float switch 113.
Therefore, when float switch 320 was fixed on its state that inserts water outflow pipeline 293, buoy 322 moved in the vertical direction according to the water level that flows out pipeline 293.
Switch element 326 is arranged on buoy 322 tops.When buoy 322 moved up under buoyancy, switch element 326 produced the signal of telecommunication by the upper end of contact buoy 322.
Thereby switch element 326 is electrically connected to the signal of telecommunication that printed circuit board (PCB) produces when printed circuit board (PCB) sends when its contact buoy 322.When the signal of telecommunication when switch element 326 transmits, printed circuit board (PCB) operate compressor 210.
When the water level of water outflow pipeline 293 was equal to, or greater than reference level, float switch 320 sent the signal of telecommunication to printed circuit board (PCB).That is, in order to realize the heat exchange between water and the refrigerant, water should be filled in the inner space that surpasses half of water outflow pipeline 293.Reference level is 1/2 of the water interior diameter that flows out pipeline 293.
Therefore, the height that switch element 326 should be installed is determined by the floating position of buoy 322, is made it correctly to produce the signal of telecommunication according to the reference level of switch element 326.
In more detail, preferably, float switch 322 is designed to contact-making switch unit 326 when half of interior diameter that water flows out pipeline 293 is filled with water.
Rubber seal 328 is arranged between the paired nut 324.Seal 328 is used for preventing to be filled in the water leakage that water flows out pipeline 293.
Referring again to Fig. 5, heat exchanger support member 298 is arranged on second heat exchanger, 290 belows.Heat exchanger support member 298 supportings second heat exchanger 290 makes that second heat exchanger and basal disc 209 are spaced apart.
That is, the upper surface of heat exchanger support member 298 is less times greater than the lower surface of second heat exchanger 290.The latter half of of heat exchanger support member 298 forms from last rear end towards rear end extension and inclination down.
The operation of above-mentioned water-cooled air conditioner is described with reference to Fig. 6 and 8 to 12 below.
Fig. 8 to 11 is the block diagrams that illustrate according to the control method of the water-cooled air conditioner of one embodiment of the present invention.Figure 12 is illustrated in the refrigerant in the heating mode operation of air conditioner and the view that flows of water.
In order to operate the water-cooled air conditioner, the inside that the water of q.s flows through second heat exchanger 290 makes normally realizes heat exchange in second heat exchanger 290.When electric energy was applied to air conditioner, water-level detecting unit and current probe unit were surveyed the water whether q.s is arranged respectively and are present in second heat exchanger 290 and whether water flows in second heat exchanger 290.
Fig. 8 illustrates according to have the process of surveying the operating air conditioner machine by the water that carries out as the float switch 320 of water-level detecting unit in second heat exchanger 290.
As shown in Figure 8, use the control method of the air conditioner of water-level detecting unit to comprise water-level detecting step S400, water level comparison step S402 and drive control step S404.
In water-level detecting step S400, use float switch 320 to determine whether water is present in second heat exchanger 290.That is, be formed on water inflow pipe 292 on the opposite end of second heat exchanger 290 and water and flow out one of them water level of pipeline 293.
In water level comparison step S402, water level of surveying in water-level detecting step S400 and reference level are relatively.As mentioned above, reference level be water inflow pipe 292 and water flow out pipeline 203 one of them interior diameter 1/2.
In driving control step S404, compressor 210 optionally is driven according to the difference of surveying between water level and the reference level, optionally operates this air conditioner thus.That is, when the water level of surveying by float switch 320 be water inflow pipe 292 and water flow out pipeline 203 one of them interior diameter 1/2 or when bigger, compressor 210 is operated.
On the contrary, when the water level of surveying by float switch 320 less than water inflow pipe 292 and water flow out pipeline 203 one of them interior diameter 1/2, compressor 210 is not operated and this state is informed the user by display or buzzer.
Fig. 9 and 10 is block diagrams that the control method that current that compressor and air conditioner carry out according to the current probe unit survey is shown.
Describe by using the pressure reduction detection water of in water inflow pipe 292 and water outflow pipeline 293, measuring whether in second heat exchanger 290, to flow with reference to Fig. 9 below and control the method for air conditioner.
As shown in Figure 9, the control method of air conditioner comprises the hydraulic pressure detection steps S410 of the hydraulic pressure sensor 340 detection hydraulic pressure that use the opposite end that is installed in second heat exchanger 290, be used for calculating between the hydraulic pressure that hydraulic pressure detection steps S410 measures difference and with this difference and the hydraulic pressure comparison step S412 that compares with reference to hydraulic pressure, and be used for driving control step S414 according to the driving of the comparative result control compressor 210 of pressure comparison step S412.
In pressure detection steps S410, the pressure that flows out the water that pipeline 293 flows along water inflow pipe 292 and water flows into pressure sensor 342 by water and outflow pressure sensor 344 is surveyed.
In driving control step S414, when the pressure reduction that calculates in pressure comparison step S412 was equal to, or greater than reference pressure and informs this state to the user, compressor 210 stopped to drive.
In this point, as mentioned above, reference pressure is 20kPa.Therefore, when the difference of the pressure of the water of being surveyed by feed pressure sensor 342 and outflow pressure sensor 344 was equal to, or greater than 20kPa, compressor 210 stops to drive and this state is informed to the user.
Control the method for air conditioner with reference to Figure 10 explanation by using the water temperature difference detection water of in water inflow pipe 292 and water outflow pipeline 293, measuring whether in second heat exchanger 290, to flow below.
As shown in figure 10, the control method of this air conditioner comprises the water temperature detection steps S420 of cooling-water temperature sensor 360 water temperature detections that use the opposite end that is installed in second heat exchanger 290, the water temperature comparison step S422 that is used for calculating the difference between the water temperature that water temperature detection steps S420 measures and this water temperature difference and reference temperature are compared, and be used for driving control step S424 according to the driving of the comparative result control compressor 210 of water temperature comparison step S422.
In water temperature detection steps S410, the temperature that flows out the water that pipeline 293 flows along water inflow pipe 292 and water is surveyed by flowing into temperature sensor 362 and flowing out temperature sensor 364.
In driving control step S424, when the temperature difference of calculating in temperature comparison step S422 was equal to or less than with reference to water temperature, compressor 210 stopped to drive, and this state is informed to the user.That is as mentioned above, it is 3 ℃, with reference to water temperature.Therefore, when the temperature difference by the water that flows into temperature sensor 362 and 364 detections of outflow temperature sensor was equal to, or greater than 3 ℃, compressor 210 stops to drive and this state is apprised of to the user.
Figure 11 be illustrate when be provided with water-level detecting unit and current probe unit the two the time air conditioner the block diagram of control method.
Control method comprises that the float switch 320 of using the sidepiece be arranged on second heat exchanger 290 surveys water inflow pipes 292 and water and flow out one of them the water-level detecting step S400 of water level of pipeline 293, the water level comparison step S402 that is used for comparison detection water level and reference level, be used for controlling the first driving control step S404 of the driving of compressor 210 according to the comparative result of water level comparison step S402, the current probe unit that use is arranged on a side of second heat exchanger 290 is surveyed whether flowing water flow detection steps S430 and drive control step S440 according to second of current result of detection control compressor 210 in second heat exchanger 290 of water.
Because each step is above describing, so omitted detailed description thereof here.That is step, shown in Figure 11 is the combination of above-mentioned steps.
That is, drive among the control step S404 first, when the detection water level was equal to, or greater than reference level, compressor 210 was operated.Reference level be water inflow pipe 292 and water flow out pipeline 293 one of them interior diameter 1/2.
Simultaneously, in current detection steps S430, can use the pressure of the water that flows through second heat exchanger 290 or temperature difference to survey current.
Therefore, current detection steps S430 can comprise the water pressure sensor 340 that uses the side be arranged on second heat exchanger 290 survey water inflow pipes 292 and water flow out pipeline 293 hydraulic pressure process and be used for comparison water inflow pipe 292 and water flows out the process of the difference between the hydraulic pressure of pipeline 293.Because the water pressure detection process is identical with hydraulic pressure comparison step S412 with hydraulic pressure detection steps S410 respectively with the pressure comparison procedure, so it is described in detail in this omission.
In addition, the second driving control step S440 is identical with driving control step S414.Just, when determining that pressure differential is equal to, or greater than reference pressure (20kPa) in the pressure comparison step, compressor 210 stops to drive.
Simultaneously, current detection steps S430 comprise use cooling-water temperature sensor 360 survey water inflow pipes 292 and water flow out the water that flows in the pipeline 293 temperature process and be used for comparison water inflow pipe 292 and water flows out the water that pipeline 293 flows and the process of the temperature difference between the reference temperature.In this point, because water temperature detection process and water temperature comparison procedure identical with previously described water temperature detection steps S420 is corresponding to previously described water temperature comparison step S422, so it is described in detail in this omission.
Because the second driving control step S440 is identical with driving control step S424.Just, when the temperature difference of determining in temperature comparison step was equal to or less than reference temperature (3 ℃), compressor 210 stopped to drive.
As mentioned above, water-level detecting unit and current probe unit can use mutually simultaneously or can only use one of them.Current are surveyed and can be finished by water temperature detection method and hydraulic pressure detection method the two or one of them.Just, though the detection of a target of hydraulic pressure sensor 340 and cooling-water temperature sensor 360 differs from one another, their detection object is mutually the same.Therefore, they selectively use.In addition, in the winter time the time, do not have only float switch 320 under hydraulic pressure sensor 340 and cooling-water temperature sensor 360 closing state, to use.
With reference to Fig. 6 the cooling agent stream in outdoor unit in the refrigerating mode operation of air conditioner is described below.
The gas phase cooling agent is introduced four-way valve 240 and is exported 246 by second of four-way valve 240 from outdoor unit 100 by the 3rd outlet 248 and imports hydraulic accumulator 270.The gas phase cooling agent that flows out hydraulic accumulator 270 enters compressor 210.
Cooling agent compresses in compressor 210 and is discharged by oil eliminator 218.Be included in oily separated in the refrigerant and be recycled to compressor 210 by oily recovery tube 219.
That is, along with refrigerant is compressed in compressor 210, this refrigerant mixes with oil.In this point, because oil is in liquid phase, so can separate from refrigerant by oil eliminator 218 as the gas/liquid separation device.
Then, the refrigerant by oil eliminator 218 passes through first outlet, 244 importings, second heat exchanger 290 that inlet 242 imports four-way valves 240 and passes through four-way valve 240 then.
The refrigerant that is discharged flows into pipeline 294 by refrigerant and introduces second heat exchanger 290 and carry out heat exchange with the water of introducing second heat exchanger 290 from cooling tower 80 by water inflow pipe 292, is converted into liquid phase refrigerant thus.Then, this liquid phase refrigerant is imported into subcooler 260 to be further cooled.
Simultaneously, water with second heat exchanger 290 in the refrigerant heat exchange during be heated, and flow out pipeline 293 by water and discharge second heat exchanger 290, flow out passage 202 by water then " import cooling tower 80.
The water that imports cooling tower 80 flows into passage 202 ' by water and introduces second heat exchanger 290 once more.This process is continuously repeated.
Simultaneously, the refrigerant that passed through cold machine 260 further passes drier, and in this drier, the moisture that comprises in the refrigerant is removed, and imports indoor unit 100 then.Then, the pressure of refrigerant is reduced and carries out heat exchange (referring to Fig. 2) in first heat exchanger 120 by expansion valve.In this point, because first heat exchanger 120 is used as evaporimeter, so refrigerant is converted into low-pressure vapor phase by heat exchange.
The refrigerant that carries out heat exchange through first heat exchanger 120 simultaneously flows along shared gas phase pipeline 134, introduces hydraulic accumulator 270 via four-way valve 240 then.
Hydraulic accumulator 270 filters out liquid phase refrigerant, makes only gas phase refrigerant to be supplied to compressor 210.By above-mentioned serial process, finish a cool cycles.
Flowing with reference to Fig. 2 and the refrigerant of 13 explanations in the operation of the heating mode of water-cooled air conditioner below.Refrigerant by compressor 210 compressions is introduced outdoor unit 200 via indoor unit 100 by outdoor liquid pipe 262.Then, refrigerant carries out heat exchange with water in by second heat exchanger 290.
Then, first outlet, 244 and second outlet 246 of passing four-way valve 240 through the refrigerant of heat exchange is introduced into hydraulic accumulator 270.In hydraulic accumulator 270, liquid phase refrigerant is filtered and has only gas phase refrigerant to be introduced into compressor 210, finishes heat cycles thus.
Those skilled in the art can carry out various improvement and variation scheme as can be known in the present invention.Therefore, the invention is intended to cover improvement of the present invention and variation scheme, these schemes are limited by appended claim and their equivalents.
For example, though water and refrigerant carry out heat exchange each other in second heat exchanger 290, the present invention is not limited to this configuration, that is, can use other liquid to replace water.

Claims (34)

1. water-cooled air conditioner comprises:
The compressor that is used for compression refrigerant;
Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange;
Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger; And
Be used for surveying the water probe unit whether water is present in described heat exchanger, described water probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
2. water-cooled air conditioner according to claim 1, whether wherein, described water probe unit is a float switch, be used for flowing into and flowing out one of them water level of pipeline and survey water and exist by measuring described water.
3. water-cooled air conditioner comprises:
The compressor that is used for compression refrigerant;
Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange;
Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger; And
Whether be used for surveying water at described heat exchanger flowing water flow probe unit, described current probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
4. water-cooled air conditioner according to claim 3, wherein, described current probe unit comprises hydraulic pressure sensor, this hydraulic pressure sensor is used to survey that described water flows into and the pressure reduction that flows out between the hydraulic pressure of pipeline and the hydraulic pressure that use is surveyed determines whether water flows, and described hydraulic pressure sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline.
5. water-cooled air conditioner according to claim 4, wherein, described hydraulic pressure sensor comprises:
Be installed in the feed pressure sensor on the described water inflow pipe, be used to survey the hydraulic pressure of described water inflow pipe; And
Be installed in the outflow pressure sensor on the described water outflow pipeline, be used to survey the hydraulic pressure that described water flows out pipeline.
6. water-cooled air conditioner according to claim 3, wherein, described current probe unit comprises cooling-water temperature sensor, this cooling-water temperature sensor is used to survey that described water flows into and the temperature difference that flows out between the water temperature of pipeline and the water temperature that use is surveyed determines whether water flows, and described cooling-water temperature sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline.
7. water-cooled air conditioner according to claim 6, wherein, described cooling-water temperature sensor comprises:
Be used to survey the inflow temperature sensor of the water temperature of described water inflow pipe; And
Be used to survey the outflow temperature sensor that described water flows out the water temperature of pipeline.
8. a water-cooled air conditioner comprises:
The compressor that is used for compression refrigerant;
Tabular heat exchanger, wherein refrigerant and water by described compressor compresses carry out heat exchange;
Be used to guide the inflow of water and the water of outflow to flow into and the outflow pipeline, described water flows into and flows out pipeline and is arranged in the described heat exchanger;
Be used for surveying the water probe unit whether water is present in described heat exchanger, described water probe unit is arranged on described water and flows into and flow out one of them a side of pipeline; And
Whether be used for surveying water at described heat exchanger flowing water flow probe unit, described current probe unit is arranged on described water and flows into and flow out one of them a side of pipeline.
9. water-cooled air conditioner according to claim 8, whether wherein, described water probe unit is a float switch, be used for flowing into and flowing out one of them water level of pipeline and survey water and exist by measuring described water.
10. water-cooled air conditioner according to claim 8, wherein, described current probe unit comprises hydraulic pressure sensor, this hydraulic pressure sensor is used to survey that described water flows into and the pressure reduction that flows out between the hydraulic pressure of pipeline and the hydraulic pressure that use is surveyed determines whether water flows, and described hydraulic pressure sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline.
11. water-cooled air conditioner according to claim 10, wherein, described hydraulic pressure sensor comprises:
Be installed in the feed pressure sensor on the described water inflow pipe, be used to survey the hydraulic pressure of described water inflow pipe; And
Be installed in the outflow pressure sensor on the described water outflow pipeline, be used to survey the hydraulic pressure that described water flows out pipeline.
12. water-cooled air conditioner according to claim 8, wherein, described current probe unit comprises cooling-water temperature sensor, this cooling-water temperature sensor is used to survey that described water flows into and the temperature difference that flows out between the water temperature of pipeline and the water temperature that use is surveyed determines whether water flows, and described cooling-water temperature sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline.
13. water-cooled air conditioner according to claim 12, wherein, described cooling-water temperature sensor comprises:
Be used to survey the inflow temperature sensor of the water temperature of described water inflow pipe; And
Be used to survey the outflow temperature sensor that described water flows out the water temperature of pipeline.
14. water-cooled air conditioner according to claim 8, wherein, described current probe unit comprises:
Hydraulic pressure sensor, this hydraulic pressure sensor are used to survey that described water flows into and the pressure reduction that flows out between the hydraulic pressure of pipeline and the hydraulic pressure that use is surveyed determines whether water flows, and described hydraulic pressure sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline; And
Cooling-water temperature sensor, this cooling-water temperature sensor are used to survey that described water flows into and the temperature difference that flows out between the water temperature of pipeline and the water temperature that use is surveyed determines whether water flows, and described cooling-water temperature sensor is installed in described water respectively and flows into and flow out on the sidepiece of pipeline.
15. water-cooled air conditioner according to claim 14, wherein, described hydraulic pressure sensor comprises:
Be installed in the feed pressure sensor on the described water inflow pipe, be used to survey the hydraulic pressure of described water inflow pipe; And
Be installed in the outflow pressure sensor on the described water outflow pipeline, be used to survey the hydraulic pressure that described water flows out pipeline.
16. water-cooled air conditioner according to claim 14, wherein, described cooling-water temperature sensor comprises:
Be used to survey the inflow temperature sensor of the water temperature of described water inflow pipe; And
Be used to survey the outflow temperature sensor that described water flows out the water temperature of pipeline.
17. a method of controlling the water-cooled air conditioner comprises:
Detection is arranged on heat exchanger one side and flows into the water of the inflow that is used to guide water and outflow and flow out one of them water level of pipeline;
Water level and the reference level surveyed are compared; And
Driving according to the control of the comparative result between described detection water level and described reference level compressor.
18. method according to claim 17, wherein, when described detection water level was equal to, or greater than described reference level, described compressor was controlled to drive.
19. method according to claim 18, wherein, described reference level be described water flow into and flow out pipeline one of them interior diameter 1/2.
20. a method of controlling the water-cooled air conditioner comprises:
Detection is arranged on heat exchanger one side to be used to guide inflow and the water inflow of outflow and the hydraulic pressure of outflow pipeline of water;
The hydraulic pressure of relatively being surveyed and with reference to the pressure reduction between the hydraulic pressure; And
According to described pressure reduction and described driving with reference to the control of the comparative result between hydraulic pressure compressor.
21. method according to claim 20, wherein, when described pressure reduction is equal to, or greater than describedly during with reference to hydraulic pressure, described compressor is controlled to stop to drive.
22. method according to claim 21, wherein, described is 20kPa with reference to hydraulic pressure.
23. a method of controlling the water-cooled air conditioner comprises:
Detection is arranged on heat exchanger one side to be used to guide inflow and the water inflow of outflow and the water temperature of outflow pipeline of water;
The water temperature of relatively being surveyed and with reference to the temperature difference between the water temperature; And
According to the described temperature difference and described driving with reference to the control of the comparative result between water temperature compressor.
24. method according to claim 23, wherein, when the described temperature difference is equal to or less than describedly during with reference to water temperature, described compressor is controlled to stop to drive.
25. method according to claim 23, wherein, described is 3 ℃ with reference to water temperature.
26. a method of controlling the water-cooled air conditioner comprises:
Detection is arranged on heat exchanger one side and flows into the water of the inflow that is used to guide water and outflow and flow out one of them water level of pipeline;
Compare water level and the reference level surveyed;
Driving according to the control of the comparative result between described detection water level and described reference level compressor;
Whether the current probe unit detection water that use is arranged on described heat exchanger one side flows in described heat exchanger; And
According to the water further driving of the described compressor of control of whether flowing.
27. method according to claim 26, wherein, when the water level of being surveyed was equal to or greater than described reference level, described compressor is controlled to be driven.
28. method according to claim 27, wherein, described reference level be described water flow into and flow out pipeline one of them interior diameter 1/2.
29. method according to claim 26, wherein, whether described detection water flows comprises:
Survey the hydraulic pressure that described water flowed into and flowed out pipeline; And
Relatively the hydraulic pressure of surveying and with reference to the pressure reduction between the hydraulic pressure.
30. method according to claim 29, wherein, when described pressure reduction is equal to, or greater than describedly during with reference to hydraulic pressure, described compressor is controlled to stop to drive.
31. method according to claim 30, wherein, described is 20kPa with reference to hydraulic pressure.
32. method according to claim 26, wherein, whether described detection water flows comprises:
Survey the water temperature that described water flowed into and flowed out pipeline; And
Institute's water temperature detection and relatively with reference to the temperature difference between the water temperature.
33. method according to claim 32, wherein, when the described temperature difference is equal to or less than describedly during with reference to water temperature, described compressor is controlled to stop to drive.
34. method according to claim 33, wherein, described is 3 ℃ with reference to water temperature.
CNA2007101034630A 2006-09-01 2007-05-18 Water-cooled air conditioner and method of controlling the same Pending CN101135477A (en)

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KR1020060084047A KR101180207B1 (en) 2006-09-01 2006-09-01 Water Cooling Type Air Conditioner
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EP (1) EP2057423A4 (en)
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CN106196520A (en) * 2015-05-08 2016-12-07 Tcl空调器(中山)有限公司 The control method of water unit and air-conditioner
CN106440926A (en) * 2016-11-29 2017-02-22 郭琦 Heat exchange fluid flowing detecting method and monitoring system
CN110002554A (en) * 2019-05-23 2019-07-12 洛阳中的电子科技有限公司 Domestic intelligent electric pulse antisludging equipment

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WO2008026813A2 (en) 2008-03-06
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