CN104864524A - Air-conditioning apparatus for vehicle - Google Patents
Air-conditioning apparatus for vehicle Download PDFInfo
- Publication number
- CN104864524A CN104864524A CN201510082018.5A CN201510082018A CN104864524A CN 104864524 A CN104864524 A CN 104864524A CN 201510082018 A CN201510082018 A CN 201510082018A CN 104864524 A CN104864524 A CN 104864524A
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- Prior art keywords
- pipe
- exchange tube
- heat
- group
- pipe group
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00792—Arrangement of detectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00335—Heat exchangers for air-conditioning devices of the gas-air type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
An air-conditioning apparatus for a vehicle includes an evaporator and a temperature sensor for detecting the temperature of the evaporator. The evaporator includes three tube groups provided in a leeward tube row, and two tube groups provided in a windward tube row. The flow direction of refrigerant within heat exchange tubes of a farthest tube group of the leeward tube row farthest from a refrigerant inlet is the same as that within heat exchange tubes of a farthest tube group of the windward tube row farthest from a refrigerant outlet. A single path is formed by the two farthest tube groups. The temperature sensor is disposed to detect the temperature of a portion of the evaporator where the farthest tube group of the leeward tube row is provided. The air-conditioning apparatus prevents the temperature of air from greatly changing due to turning on and off of a compressor.
Description
Technical field
The present invention relates to as the cooling cycle system be such as mounted on automobile, air conditioner for vehicles.
In this specification and claims book, being upper and lower up and down shown in Fig. 2 and Fig. 3.
Background technology
As air conditioner for vehicles, known a kind of air conditioner for vehicles widely, it has: compressor, and engine links as drive source via clutch mechanism and engine by it; Condenser, its cooling is by the cold-producing medium of compressor compresses; Pressure reducer, it reduces pressure to the cold-producing medium cooled by condenser; Evaporimeter, it makes the cold-producing medium evaporation of being reduced pressure by pressure reducer; And temperature sensor, it detects the temperature of evaporimeter, based on the temperature detected by temperature sensor, compressor is opened, closes and control the temperature of evaporimeter, thereby, it is possible to suppress compressor unlatching and close time in the temperature of the air of the indoor blowout of car, produce larger temperature difference.
As an example of above-mentioned air conditioner for vehicles, propose a kind of air conditioner for vehicles, it is provided with along direction of ventilation the pipe row that 2 row are made up of multiple heat-exchange tube on an evaporator side by side, above-mentioned heat-exchange tube is also to configure length direction along the mode that the direction at a right angle with direction of ventilation is spaced apart towards above-below direction, in adjacent heat-exchange tube ventilation gap each other, so that across the heat-exchange tube of two pipe row, total mode is configured with fin respectively, the both ends up and down of the heat-exchange tube of downwind side and windward side pipe row are communicated with downwind side and weather side two parts liquid portion respectively, and on downwind side liquid collecting portion an end on be provided with refrigerant inlet, be in the wind and be the same side with refrigerant inlet end is provided with refrigerant outlet on side in liquid collecting portion, on leeward side pipe row, the 1st ~ 4th pipe group be made up of multiple heat-exchange tube is provided with side by side from refrigerant inlet side towards another side, on side pipe of being in the wind row, from being opposition side with refrigerant outlet, end side is provided with the 5th ~ 8th pipe group be made up of multiple heat-exchange tube side by side towards refrigerant outlet, 8th pipe group is positioned at the weather side of the 1st pipe group, 7th pipe group is positioned at the weather side of the 2nd pipe group, 6th pipe group is positioned at the weather side of the 3rd pipe group, 5th pipe group is positioned at the weather side of the 4th pipe group, and each pipe group becomes 1 path respectively, the flow of refrigerant direction of the heat-exchange tube of each Guan Zuzhong is identical, and the flow of refrigerant direction of the heat-exchange tube in adjacent tubes group is contrary, the adjacent heat-exchange tube being configured at the 1st pipe group fin is each other provided with the 1st temperature sensor, the adjacent heat-exchange tube being configured at the 4th pipe group fin is each other provided with the 2nd temperature sensor (with reference to Japanese Unexamined Patent Publication 2004-268769 publication).
In the air conditioner for vehicles described in above-mentioned publication, the temperature of the fin be configured in the 1st pipe group of evaporimeter is detected by the 1st temperature sensor, when this temperature is lower than when closing below the target temperature of side, clutch mechanism is made to be that dissengaged positions makes compressor stop, the temperature of the fin be configured in the 4th pipe group of evaporimeter is detected by the 2nd temperature sensor, when this temperature rise to only exceed the open side target temperature of set point of temperature than closedown side target temperature time, make clutch mechanism be that connection status makes compressor revert to duty.
But owing to there is superheat region in the 8th pipe group, so when the closedown of compressor, the temperature being configured in the fin in the 8th pipe group of evaporimeter is very high.Therefore, worry when the unlatching of compressor, until the temperature being configured in the fin in the 1st pipe group of evaporimeter is reduced to below closedown side target temperature need the long time, and being configured in other pipe group, the temperature being such as configured in heat-exchange tube in the 4th pipe group of evaporimeter and the 5th pipe group and fin can reduce and make the situation that condensing water freezes.Consequently, worry can with condensing water freeze to produce to be called as reason freeze smelly peculiar smell.
In addition, in the air conditioner for vehicles described in above-mentioned publication, employ 2 temperature sensors, therefore there is number of components increase and cost is higher, and assembling operation increases man-hour, and control system becomes complicated worry.
Summary of the invention
The object of the present invention is to provide a kind of air conditioner for vehicles, it can solve the problem, and prevents condensing water from freezing on the surface of evaporimeter, and, can number of components be reduced.
The present invention is made up of following mode to achieve these goals.
1) air conditioner for vehicles, has: compressor, and engine to link as drive source via clutch mechanism and engine by it; Condenser, its cooling is by the cold-producing medium of compressor compresses; Pressure reducer, it reduces pressure to the cold-producing medium cooled by condenser; Evaporimeter, it makes the cold-producing medium evaporation of being reduced pressure by pressure reducer; And temperature sensor, it detects the temperature of evaporimeter, based on the temperature detected by temperature sensor, compressor is opened, closes and control the temperature of evaporimeter, wherein,
The pipe row that 2 row are made up of multiple heat-exchange tube are provided with side by side on an evaporator along direction of ventilation, described heat-exchange tube is also to configure length direction along the mode that the direction at a right angle with direction of ventilation is spaced apart towards above-below direction, leeward side pipe row are provided with the pipe group of more than 3 groups be made up of multiple heat-exchange tube, side pipe of being in the wind row are provided with and are made up of and the pipe group of few one group of pipe group number ratio leeward side pipe row multiple heat-exchange tube, make the both ends up and down of the heat-exchange tube of downwind side and windward side pipe row, be communicated with downwind side and weather side two parts liquid portion respectively, and an end in the liquid collecting portion of any one party in downwind side two parts liquid portion is provided with refrigerant inlet, be in the wind in two parts liquid portion, side is the liquid collecting portion of the same side with the downwind side liquid collecting portion that is provided with refrigerant inlet, the end being the same side with refrigerant inlet is provided with refrigerant outlet, the flow direction being positioned at the cold-producing medium of the heat-exchange tube of the group of pipe farthest from refrigerant inlet highest distance position in leeward side pipe row, the flow direction being positioned at the cold-producing medium of the heat-exchange tube of the group of pipe farthest from refrigerant outlet highest distance position in arranging with side pipe of being in the wind is equidirectional, by be set up in parallel along direction of ventilation and make the flow direction of the cold-producing medium in heat-exchange tube be equidirectional above-mentioned 2 groups farthest pipe group form 1 path
1 temperature sensor configures on an evaporator, to detect the temperature being provided with the part of pipe group farthest of the leeward side pipe row of evaporimeter.
2) above-mentioned 1) described in air conditioner for vehicles in, temperature sensor is made up of thermistor, and is arranged on the adjacent heat-exchange tube fin each other of the group of pipe being farthest configured at leeward side pipe row.
3) above-mentioned 1) described in air conditioner for vehicles in, on the leeward side pipe row of evaporimeter, the 1st ~ 3rd pipe group be made up of multiple heat-exchange tube is provided with side by side from the end of refrigerant inlet side towards side, the other end, on the windward side pipe row of above-mentioned evaporimeter, from being opposition side with refrigerant outlet side, end is provided with towards the end of refrigerant outlet side the 4th pipe group be made up of multiple heat-exchange tube side by side, 5th pipe group, in downwind side two parts liquid portion and weather side two parts liquid portion, be provided with the region of the fixed qty be communicated with for heat-exchange tube, thus, 1st pipe consists of cold-producing medium in heat-exchange tube from the 1st path that residing for any one refrigerant inlet, flow to opposition side in side up and down, 2nd pipe consists of the 2nd path that cold-producing medium flows to the direction contrary with the 1st path in heat-exchange tube, 3rd pipe group and the 4th pipe consist of the 3rd path that cold-producing medium flows to the direction identical with the 1st path in heat-exchange tube, 5th pipe consists of the 4th path that cold-producing medium flows to the direction contrary with the 1st path in heat-exchange tube, and the 3rd path is that the 3rd pipe group of equidirectional and the 4th pipe group to be set up in parallel along direction of ventilation and to form by making the flow direction of the cold-producing medium in heat-exchange tube.
According to above-mentioned 1) ~ 3) air conditioner for vehicles, due to the cold-producing medium that flows into from the refrigerant inlet of evaporimeter arrive distance to the group of pipe farthest of leeward side pipe row and the group of pipe farthest of windward side pipe row and the time roughly equal, so when compressor switches to unlatching from cut out, the heat-exchange tube of two pipe groups farthest of evaporimeter can be uniformly cooled, consequently, when the unlatching of compressor, the temperature of the existing part of the 3rd pipe group of evaporimeter can be reduced to the short period closes below side target temperature.Therefore, the temperature of part existing for the pipe group except the group of pipe farthest of the group of pipe farthest except leeward side pipe row in evaporimeter and windward side pipe row can be suppressed to reduce and cause the situation that condensing water freezes, consequently, can suppress because of condensing water freeze to produce to be called as reason freeze smelly peculiar smell.
In addition, when compressor switches to unlatching from cut out, although evaporimeter leeward side pipe row near refrigerant inlet nearest pipe group existing for part temperature will sharply reduce, but when the closedown of compressor, superheat region is there is for reason in what arrange with side pipe of being in the wind near in the nearest pipe group of refrigerant outlet, and the temperature of the existing part of the nearest pipe group making the windward side pipe of evaporimeter arrange is very high, therefore, it is possible to the temperature of part declines existing for the nearest pipe group of the leeward side pipe row of the evaporimeter of mitigation when compressor switches to unlatching from cut out.Therefore, when the unlatching of compressor, the temperature of the existing part of the nearest pipe group that the leeward side pipe of evaporimeter can be suppressed to arrange reduces, thus suppresses freezing of condensing water.
In addition, according to above-mentioned 1) ~ 3) air conditioner for vehicles, owing to only using a temperature sensor, so can number of components be reduced and reduce costs, and assembling operation man-hour can be reduced, and control system can become simple.
Accompanying drawing explanation
Fig. 1 is the fragmentary perspective cross sectional view representing that the entirety for the evaporimeter of air conditioner for vehicles of the present invention is formed.
Fig. 2 is the A-A line sectional view of the Fig. 1 eliminating a part.
Fig. 3 is the B-B line sectional view of the Fig. 1 eliminating a part.
Fig. 4 is the figure of the flowing of the cold-producing medium represented in the evaporimeter of Fig. 1.
Detailed description of the invention
Hereinafter, with reference to the accompanying drawings of embodiments of the present invention.In the embodiment of the following stated, air is along passing through evaporimeter with direction shown by arrow X flowing in the drawings, and the car being fed through the vehicle being equipped with air conditioner for vehicles is indoor.
In the following description, to observe weather side from downwind side the left and right (left and right shown in Fig. 2 and Fig. 3) time is for left and right.
In addition, in the following description, term " aluminium " also comprises aluminium alloy in addition to pure.
Fig. 1 represents that the entirety for the evaporimeter of air conditioner for vehicles of the present invention is formed, Fig. 2 and Fig. 3 roughly represents this formation, and Fig. 4 represents the flowing of the cold-producing medium in the evaporimeter of Fig. 1.In addition, the formation of air conditioner for vehicles is known, then omit diagram.
Air conditioner for vehicles has: compressor, and engine links as drive source and via clutch mechanism with engine by it; Condenser, its cooling is by the cold-producing medium of compressor compresses; Pressure reducer, it reduces pressure to the cold-producing medium cooled by condenser; Evaporimeter 1, it makes the cold-producing medium evaporation of being reduced pressure by pressure reducer; With temperature sensor 2, it is made up of such as thermistor and detects the temperature of evaporimeter 1, and above-mentioned air conditioner for vehicles makes compressor open based on the temperature detected by temperature sensor 2, closes and control the temperature of evaporimeter 1.
As shown in FIG. 1 to 3, evaporimeter 1 has: the leeward side pipe row 4 be made up of the heat-exchange tube 3 of multiple aluminum flat and windward side pipe row 5, this heat-exchange tube 3 be by width towards the direction of ventilation shown in arrow X in Fig. 1 and by length direction under the state of above-below direction in left-right direction (direction at a right angle with direction of ventilation) configure at spaced intervals; Liquid collecting portion 7 under liquid collecting portion 6 and aluminum downwind side on aluminum downwind side, length direction is configured in the both end sides up and down of the heat-exchange tube 3 of leeward side pipe row 4 by it towards left and right directions (the also column direction of heat-exchange tube 3), and is connected with whole heat-exchange tubes 3 of leeward side pipe row 4; With liquid collecting portion 9 under liquid collecting portion 8 on aluminum weather side and weather side, length direction is configured in the both end sides up and down of the heat-exchange tube 3 of windward side pipe row 5 by it towards left and right directions (the also column direction of heat-exchange tube 3), and is connected with whole heat-exchange tubes 3 of windward side pipe row 5.The quantity of the heat-exchange tube 3 of leeward side pipe row 4 is equal with the quantity of the heat-exchange tube 3 of windward side pipe row 5.
In the outside of adjacent heat-exchange tube 3 ventilation gap 11 each other of two pipe row 4,5 and the heat-exchange tube 3 at two ends, left and right, mode total with the heat-exchange tube 3 across two pipe row 4,5 is respectively configured with Aluminum corrugate fin 12 and makes its soldering on two heat-exchange tubes 3, is configured with aluminum side plate 13 respectively and makes its soldering on corrugated fin 12 in the outside of the corrugated fin 12 at two ends, left and right.Corrugated fin 12 is by crest portion, trough portion and formed by the linking part that crest portion and trough portion link.Also ventilation gap 11 is become between the heat-exchange tube 3 at two ends, left and right and side plate 13.The car that the air passed through from adjacent heat-exchange tube 3 ventilation gap 11 each other of two pipe row 4,5 is fed through the vehicle being equipped with air conditioner for vehicles is indoor.
As shown in Figure 2 to 4, on leeward side pipe row 4, be provided with the odd number group of more than 3 groups be made up of continuously arranged multiple heat-exchange tube 3, in this case the 1st ~ 3rd pipe group 14,15,16 of 3 groups, be in the wind on side pipe row 5, be provided with and be made up of and the 4th ~ 5th pipe group 17,18 of few one group of the pipe group 14,15,16 of number ratio leeward side pipe row 4, in this case 2 groups continuously arranged multiple heat-exchange tube 3.
Temperature sensor 2 is made up of such as thermistor, and the adjacent linking part of corrugated fin 12 in being arranged on the ventilation gap 11 being configured at the 3rd pipe group 16 each other, detects the temperature of the corrugated fin 12 be configured in the 3rd pipe group 16 of evaporimeter 1.And, when the temperature detected by temperature sensor 2 is lower than when closing below the target temperature of side, clutch mechanism is made to be that dissengaged positions makes compressor stop, when the temperature detected by said temperature sensor 2 rise to only exceed the open side target temperature of set point of temperature than closedown side target temperature time, make clutch mechanism be that connection status makes compressor revert to duty.
In leeward side pipe row 4, the 1st pipe group 14 is positioned at right part, and the 2nd pipe group 15 is positioned at the central portion of left and right directions, and the 3rd pipe group 16 is positioned at left part.Be in the wind in side pipe row 5, the 4th pipe group 17 is positioned at left side, and the 5th pipe group 18 is positioned at right side.The quantity forming the heat-exchange tube 3 of the 2nd pipe group 15 is more than the quantity of the heat-exchange tube 3 of formation the 1st pipe group 14, and the total quantity of the heat-exchange tube 3 of two pipe groups 14,15 is equal with the quantity of the heat-exchange tube 3 forming the 5th pipe group 18.The quantity forming the heat-exchange tube 3 of the 3rd pipe group 16 and formation the 4th pipe group 17 is equal to each other.Consequently, the total width on the left and right directions of the 1st and the 2nd pipe group 14,15 is identical with the width on the left and right directions of the 5th pipe group 18, and the width on the left and right directions of the 3rd pipe group 16 and the 4th pipe group 17 is identical.And the 1st pipe group 14 of the right part of leeward side pipe row 4 becomes the 1st path that cold-producing medium flows at first, and the 5th pipe group 18 on the right side of windward side pipe row 5 becomes the final path that cold-producing medium finally flows to.
On downwind side on liquid collecting portion 6 and weather side under liquid collecting portion 8 and downwind side under liquid collecting portion 7 and weather side liquid collecting portion 9 be such as divided into 2 spaces by 1 division 19a, 21a extending in left-right direction in catch box 19,21 along direction of ventilation and establish.
By being divided into multiple spaces arranged side by side in left-right direction by liquid collecting portion on downwind side 6 by cutting part 6a, and liquid collecting portion 6 is provided with heat-exchange tube 3 the 1st region 22 be communicated with and the 2nd region 23 supplying the heat-exchange tube 3 of the 2nd and the 3rd pipe group 15,16 to be communicated with for the 1st pipe group 14 on downwind side, and be provided with refrigerant inlet 24 in the right part in the 1st region 22.
By being divided into multiple spaces arranged side by side in left-right direction by liquid collecting portion under downwind side 7 by cutting part 7a, and liquid collecting portion 7 is provided with heat-exchange tube 3 the 3rd region 25 be communicated with and the 4th region 26 supplying the heat-exchange tube 3 of the 3rd pipe group 16 to be communicated with for the 1st and the 2nd pipe group 14,15 under downwind side.
By being divided into multiple spaces arranged side by side in left-right direction by liquid collecting portion on weather side 8 by cutting part 8a, and liquid collecting portion 8 is provided with heat-exchange tube 3 the 5th region 27 be communicated with and the 6th region 28 supplying the heat-exchange tube 3 of the 5th pipe group 18 to be communicated with for the 4th pipe group 17 on side of being in the wind, and be provided with refrigerant outlet 29 in the right part in the 6th region 28.
To be in the wind liquid collecting portion 9 under side on the whole, to be provided with the 7th region 32 that the heat-exchange tube 3 for the 4th pipe group 17 and the 5th pipe group 18 is communicated with.
The part heat-exchange tube 3 of confession the 3rd pipe group 16 in the 2nd region 23 in liquid collecting portion 6 on downwind side being communicated with via the interconnecting part 33 be located on division 19a is communicated with the 5th region 27 in liquid collecting portion 8 on weather side.In addition, the part making the heat-exchange tube 3 of confession the 4th pipe group 17 under downwind side in the 4th region 26 in liquid collecting portion 7 and the 7th region 32 in liquid collecting portion 9 under weather side be communicated with via the multiple interconnecting parts 34 be located on division 21a is communicated with.
The 1st ~ 5th pipe group 14 is provided with as described above on leeward side pipe row 4 and windward side pipe row 5, 15, 16, 17, 18, and as described above in downwind side two liquid collecting portion 6, 7 and weather side two liquid collecting portion 8, 9 are provided with refrigerant inlet 24, refrigerant outlet 29, 1st ~ 7th region 22, 23, 25, 26, 27, 28, 32 and interconnecting part 33, 34, thus, cold-producing medium is in the 1st pipe group 14, flow from the top down in the heat-exchange tube 3 of the 3rd pipe group 16 and the 4th pipe group 17, and cold-producing medium flows from bottom to top in the heat-exchange tube 3 of the 2nd pipe group 15 and the 5th pipe group 18, by the 1st pipe group 14, 2nd pipe group 15 and the 5th pipe group 18 form 1 heat exchange paths respectively, by the 3rd and the 4th these 2 groups of pipe groups 16, 17 form 1 heat exchange paths.
Therefore, as shown in Figure 4, the cold-producing medium reduced pressure by pressure reducer flows in the 1st region 22 from refrigerant inlet 24, flows through 2 paths as described below and flows out towards compressor from the refrigerant outlet 29 in the 6th region 28.1st path is the 1st region 22, the 1st pipe group 14, the 3rd region 25, the 2nd pipe group 15, the 2nd region 23, the 4th pipe group 16, the 4th region 26, interconnecting part 34, the 7th region 32, the 5th pipe group 18 and the 6th region 28.2nd path is the 1st region 22, the 1st pipe group 14, the 3rd region 25, the 2nd pipe group 15, the 2nd region 23, interconnecting part 33, the 5th region 27, the 4th pipe group 17, the 7th region 32, the 5th pipe group 18 and the 6th region 28.And the 1st pipe group 14 forms the 1st path, the 2nd pipe group 15 forms the 2nd path, and the 3rd and the 4th pipe group 16,17 forms the 3rd path, and the 8th pipe group 18 forms the 4th path.
In above-mentioned air conditioner for vehicles, the mix refrigerant of the gas-liquid mixed phase passed through from compressor, condenser and expansion valve enters in the 1st region 22 in liquid collecting portion 6 downwind side by refrigerant inlet 24, and is flowed out towards compressor from the refrigerant outlet 29 in the 6th region 28 by above-mentioned 2 paths.In the process that cold-producing medium flows in the heat-exchange tube 3 of leeward side pipe row 4 and in the heat-exchange tube 3 of windward side pipe row 5, heat exchange is carried out with the air passed through from ventilation gap 11 (the arrow X with reference to Fig. 1 and Fig. 4), thus air is cooled, and cold-producing medium becomes gaseous state and flows out.
Then, when the temperature being configured in the corrugated fin 12 in the 3rd pipe group 16 of evaporimeter 1 detected by temperature sensor 2 is lower than when closing below the target temperature of side, clutch mechanism is made to be that dissengaged positions makes compressor stop, when the temperature of the corrugated fin 12 be configured in the 3rd pipe group 16 of evaporimeter 1 detected by said temperature sensor 2 rise to only exceed the open side target temperature of set point of temperature than closedown side target temperature time, make clutch mechanism be that connection status makes compressor revert to duty.
At this, the cold-producing medium flowed into from the refrigerant inlet 24 of evaporimeter 1 arrive distance the 4th pipe group 17 of the 3rd pipe group 16 to the group of pipe farthest as leeward side pipe row 4 and the group of pipe farthest as windward side pipe row 5 and the time roughly equal, therefore, when compressor switches to unlatching from cut out, be configured in two pipe groups 16 of evaporimeter, heat-exchange tube 3 on 17 and corrugated fin 12 can be uniformly cooled, consequently, when the unlatching of compressor, the temperature being configured in the corrugated fin 12 in the 3rd pipe group 16 of evaporimeter 1 can be reduced to the short period closes below side target temperature.Therefore, the temperature that can suppress to be configured in heat-exchange tube 3 in the 1st pipe group 14 except the 3rd pipe group 16 and the 4th pipe group 17, the 2nd pipe group 15 and the 5th pipe group 18 in evaporimeter 1 and corrugated fin 12 reduces and causes condensing water in the situation of shallow freezing, consequently, can suppress because of condensing water freeze to produce to be called as reason freeze smelly peculiar smell.
In addition, when compressor switches to unlatching from cut out, although the temperature of the existing part of the 1st pipe group 14 near refrigerant inlet 24 of the leeward side pipe row 4 of evaporimeter 1 will sharply reduce, but when the closedown of compressor, superheat region is there is for reason near in the 5th pipe group 18 of refrigerant outlet 29 with side pipe row 5 of being in the wind, and make the temperature of the existing part of the 5th pipe group 18 of evaporimeter 1 very high, therefore, it is possible to relax in the reduction of compressor from the temperature of the existing part of the 1st pipe group 14 of the evaporimeter 1 of closing when switching to unlatching.Therefore, when the unlatching of compressor, the temperature of the existing part of the 1st pipe group 14 of the leeward side pipe row 4 of evaporimeter 1 can be suppressed to reduce, thus suppress freezing of condensing water.
In the above-described embodiment, although be provided with 3 groups of pipe groups on leeward side pipe row 4, side pipe row 5 of being in the wind are provided with 2 groups of pipe groups, are not limited thereto.In addition, also there is the quantity based on the pipe group of two pipe row 4,5 and under refrigerant inlet being located at downwind side in liquid collecting portion, and the situation under refrigerant outlet being located at weather side in liquid collecting portion.
In addition, evaporimeter of the present invention also can be suitable for the so-called stack Type evaporator of following form, its with and column-shaped be configured with multiple flat hollow bodies, this flat hollow bodies make 1 pair of disk like plate relatively and by circumference each other soldering form, each flat hollow bodies is provided with along direction of ventilation side by side and extend along the vertical direction 2 heat-exchange tubes, and the liquid collecting forming portion to be communicated with the two ends up and down of two heat-exchange tubes, and the mode be communicated with separately from each other to make 2 upper and lower liquid collecting forming portions of whole flat hollow bodies is by flat hollow bodies soldering each other, thus, be provided with 2 row side by side along direction of ventilation to be arranged by the pipe that extension multiple heat-exchange tubes that also direction at a right angle with direction of ventilation, edge configures at spaced intervals are formed along the vertical direction, and by the liquid collecting forming portion of whole flat hollow bodies, and the downwind side that the two ends being up and down provided with the pipe row supplying downwind side and weather side are communicated with and weather side two parts liquid portion.
Claims (3)
1. an air conditioner for vehicles, has: compressor, and engine to link as drive source via clutch mechanism and engine by it; Condenser, its cooling is by the cold-producing medium of compressor compresses; Pressure reducer, it reduces pressure to the cold-producing medium cooled by condenser; Evaporimeter, it makes the cold-producing medium evaporation of being reduced pressure by pressure reducer; And temperature sensor, it detects the temperature of evaporimeter, and based on the temperature detected by temperature sensor, compressor is opened, close and control the temperature of evaporimeter, the feature of described air conditioner for vehicles is,
The pipe row that 2 row are made up of multiple heat-exchange tube are provided with side by side on an evaporator along direction of ventilation, described heat-exchange tube is also to configure length direction along the mode that the direction at a right angle with direction of ventilation is spaced apart towards above-below direction, leeward side pipe row are provided with the pipe group of more than 3 groups be made up of multiple heat-exchange tube, side pipe of being in the wind row are provided with and are made up of and the pipe group of few one group of pipe group number ratio leeward side pipe row multiple heat-exchange tube, make the both ends up and down of the heat-exchange tube of downwind side and windward side pipe row, be communicated with downwind side and weather side two parts liquid portion respectively, and an end in the liquid collecting portion of any one party in downwind side two parts liquid portion is provided with refrigerant inlet, be in the wind in two parts liquid portion, side is the liquid collecting portion of the same side with the downwind side liquid collecting portion that is provided with refrigerant inlet, the end being the same side with refrigerant inlet is provided with refrigerant outlet, the flow direction being positioned at the cold-producing medium of the heat-exchange tube of the group of pipe farthest from refrigerant inlet highest distance position in leeward side pipe row, the flow direction being positioned at the cold-producing medium of the heat-exchange tube of the group of pipe farthest from refrigerant outlet highest distance position in arranging with side pipe of being in the wind is equidirectional, by be set up in parallel along direction of ventilation and make the flow direction of the cold-producing medium in heat-exchange tube be equidirectional above-mentioned 2 groups farthest pipe group form 1 path
1 temperature sensor configures on an evaporator, to detect the temperature being provided with the part of pipe group farthest of the leeward side pipe row of evaporimeter.
2. air conditioner for vehicles according to claim 1, is characterized in that, temperature sensor is made up of thermistor, and is arranged on the adjacent heat-exchange tube fin each other of the group of pipe being farthest configured at leeward side pipe row.
3. air conditioner for vehicles according to claim 1, it is characterized in that, on the leeward side pipe row of evaporimeter, the 1st ~ 3rd pipe group be made up of multiple heat-exchange tube is provided with side by side from the end of refrigerant inlet side towards side, the other end, on the windward side pipe row of above-mentioned evaporimeter, from being opposition side with refrigerant outlet side, end is provided with towards the end of refrigerant outlet side the 4th pipe group be made up of multiple heat-exchange tube side by side, 5th pipe group, in downwind side two parts liquid portion and weather side two parts liquid portion, be provided with the region of the fixed qty be communicated with for heat-exchange tube, thus, 1st pipe consists of cold-producing medium in heat-exchange tube from the 1st path that residing for any one refrigerant inlet, flow to opposition side in side up and down, 2nd pipe consists of the 2nd path that cold-producing medium flows to the direction contrary with the 1st path in heat-exchange tube, 3rd pipe group and the 4th pipe consist of the 3rd path that cold-producing medium flows to the direction identical with the 1st path in heat-exchange tube, 5th pipe consists of the 4th path that cold-producing medium flows to the direction contrary with the 1st path in heat-exchange tube, and the 3rd path is that the 3rd pipe group of equidirectional and the 4th pipe group to be set up in parallel along direction of ventilation and to form by making the flow direction of the cold-producing medium in heat-exchange tube.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014031986A JP2015157507A (en) | 2014-02-21 | 2014-02-21 | Air conditioner for vehicle |
| JP2014-031986 | 2014-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104864524A true CN104864524A (en) | 2015-08-26 |
Family
ID=53782588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510082018.5A Pending CN104864524A (en) | 2014-02-21 | 2015-02-15 | Air-conditioning apparatus for vehicle |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20150241080A1 (en) |
| JP (1) | JP2015157507A (en) |
| CN (1) | CN104864524A (en) |
| DE (1) | DE102015101818A1 (en) |
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| CN107856494B (en) * | 2017-10-20 | 2024-05-03 | 珠海格力电器股份有限公司 | Vehicle with a vehicle body having a vehicle body support |
| EP3726153A1 (en) * | 2019-03-29 | 2020-10-21 | Kimura Kohki Co., Ltd. | Air conditioning system |
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Also Published As
| Publication number | Publication date |
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| DE102015101818A1 (en) | 2015-08-27 |
| JP2015157507A (en) | 2015-09-03 |
| US20150241080A1 (en) | 2015-08-27 |
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Application publication date: 20150826 |