CN202204064U - Overhead vehicle-mounted air conditioning system - Google Patents

Overhead vehicle-mounted air conditioning system Download PDF

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Publication number
CN202204064U
CN202204064U CN2011202465486U CN201120246548U CN202204064U CN 202204064 U CN202204064 U CN 202204064U CN 2011202465486 U CN2011202465486 U CN 2011202465486U CN 201120246548 U CN201120246548 U CN 201120246548U CN 202204064 U CN202204064 U CN 202204064U
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CN
China
Prior art keywords
compressor
condenser
air conditioner
overhead type
cold
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.)
Expired - Lifetime
Application number
CN2011202465486U
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Chinese (zh)
Inventor
罗岳华
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Hunan Vaqoung Electric Co Ltd
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Hunan Vaqoung Electric Co Ltd
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Priority to CN2011202465486U priority Critical patent/CN202204064U/en
Application granted granted Critical
Publication of CN202204064U publication Critical patent/CN202204064U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an overhead vehicle-mounted air conditioning system, which comprises an air conditioning enclosure, a condenser, a condensing fan, a compressor, an evaporator, an evaporating fan, an expansion valve, a refrigerant circulation pipeline, a control circuit, a compressor power supply circuit and a refrigerant, wherein the compressor is arranged in the enclosure and is an electrically-driven and fully-closed horizontal compressor; a connecting structure between the refrigerant circulation pipeline and a part connected with the circulation pipeline is a welding structure; and the refrigerant is a refrigerant R410A. By the overhead vehicle-mounted air conditioning system, the problem of leakage when the refrigerant R410A is used by the system is solved; the volume of the system is reduced; and the energy efficiency rate of the system is increased.

Description

Overhead type on-board air conditioner system
The application is that utility model is divided an application, and the application number of this division application original bill is 201120046728.X, and the applying date is on February 24th, 2011, and the utility model name is called " a kind of overhead type on-board air conditioner system ".
[technical field]
The utility model relates to car air-conditioner, relates in particular to a kind of overhead type on-board air conditioner system.
[background technology]
The employed cold-producing medium R12 of automobile air conditioning refrigerating system because its ODP value and GWP value are excessive, has been classified as the CFC material of forbidding in the world at present, and R22 substitutes working medium very soon also with disabled as short-term.Along with going deep into of mixed working fluid research in recent years, the multiple mixed working fluid that is suitable as alternative refrigerant has appearred.Wherein R407C, R410A are respectively that three kinds and two kinds of formulated by a certain percentage ODP of pure HFC working medium are zero mixed working fluid.
R134a substitutes working medium as a kind of comparatively ideal long-term, in a lot of refrigeration plants, is used widely.But the normal boiling point of R134a is merely-26.7 ℃, has limited its application at low temperatures.The refrigerating effect per unit swept volume of R407C and pressure are all more approaching with R22.Therefore, system also is applicable to the R407C system as long as the design of simple Adjustment System just can make former R22.But, systematic energy efficiency ratio (COP) can reduce about 5% than original system.This is because with respect to other cold-producing mediums, R407C has the temperature drift up to 6 ℃.Therefore the R407c system can reduce heat transmission when onesize condenser and evaporimeter, and influences systematic energy efficiency ratio.
R410A is the accurate azeotrope refrigerant of binary that is formed by 1: 1 mixed by R32 and R125.Compare with R22, R410A has the heat transmission and the flow behavior of significant advantage, and still, under the uniform temp condition, the pressure of R410A is about 1.5 times of R22, leaks more easily than R22, has limited the use of R410A on on-board air conditioner.
What the condensation air intake of traditional on-board air conditioner system adopted is air intake from the condensation chamber both sides, behind the condenser of the left and right sides, is blown out by the condensation fan of centre, and this structure can't be utilized head-on the wind comes from of vehicle ', and power consumption is higher, and structure is compact inadequately.
[utility model content]
The technical problem that the utility model will solve provides a kind of compact conformation, the higher overhead type on-board air conditioner system of Energy Efficiency Ratio.
In order to solve the problems of the technologies described above; The technical scheme that the utility model adopts is; A kind of overhead type on-board air conditioner system; Comprise air conditioner casing, condenser, condensation fan, compressor, evaporimeter, evaporation fan, expansion valve, refrigerant circulation line, control circuit, compressor power supply circuits and cold-producing medium, described compressor is arranged in the casing, is that electricity drives totally enclosed horizontal compressor; Syndeton between described refrigerant circulation line and the parts that are connected with circulation line adopts Welding Structure; Described cold-producing medium is the R410A cold-producing medium.Described condenser is arranged in the front end of air conditioner casing ante-chamber, and described condensation fan is 2 to 4, lateral arrangement at the middle part of ante-chamber, the back of condenser, described compressor is arranged in the rear portion of ante-chamber; The front end of air conditioner casing comprises the air inlet of condenser, and the top of air conditioner casing comprises the air outlet of condensation fan.
Above-described overhead type on-board air conditioner system, the pressure duct between the pressure duct between compressor and the condenser, condenser and the expansion valve adopts thick-walled pipe.
Above-described overhead type on-board air conditioner system, the wall thickness of said thick-walled pipe is not less than 1.2 millimeters.
Above-described overhead type on-board air conditioner system, the condenser heat exchange area is 0.31 to 0.35 with the ratio of evaporimeter heat exchange area.
The utility model overhead type on-board air conditioner system adopts electricity to drive totally enclosed horizontal compressor; Compressor is arranged in the casing; The circulation line of cold-producing medium all adopts the welding pipeline; Resolution system uses the leakage problem of R410A cold-producing medium, and the refrigerating capacity of R410A unit mass is higher by 11.2% than R134a, and the gas volume of specific refrigerating effect is littler by 132% than R134a; The pressure ratio R407C's of R410A is high by 50%, but the unit mass refrigerating capacity is higher by 6.2% than R407C, and the gas volume of specific refrigerating effect is littler by 60% than R407C.Therefore, can reduce system bulk, improve the Energy Efficiency Ratio of system.
[description of drawings]
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the outline drawing of the utility model overhead type on-board air conditioner system embodiment.
Fig. 2 is the vertical view of the utility model overhead type on-board air conditioner structure embodiment internal structure.
Fig. 3 is that the A of Fig. 2 is to cutaway view.
Fig. 4 is the partial enlarged drawing at B position among Fig. 3.
Fig. 5 is the utility model overhead type on-board air conditioner system embodiment structure of condenser schematic diagram.
[specific embodiment]
To overhead type on-board air conditioner system embodiment shown in Figure 5, overhead type on-board air conditioner system comprises air conditioner casing 10, condenser 1, condensation fan 2, compressor 3, evaporimeter 4, evaporation fan 5, expansion valve 6, refrigerant circulation line, control circuit and compressor power supply circuits at Fig. 1.The used cold-producing medium of system is the R410A cold-producing medium.
Air conditioner casing 10 is divided into ante-chamber, lumen and back cavity, and ante-chamber is a condensation chamber, and lumen is the electrical arrangement chamber, and back cavity is an evaporation cavity.Between condensation chamber and the electrical arrangement chamber, all have dividing plate 1001 that two adjacent chambeies are separated between electrical arrangement chamber and the evaporation cavity.Condenser 1, condensation fan 2, compressor 3 are arranged in the condensation chamber, and evaporimeter and evaporation fan are arranged in the evaporation cavity.The main main part of control circuit and the main part of compressor 3 power supply circuits of arranging in the electrical arrangement chamber, like frequency converter, PLC Programmable Logic Controller, thermal module, fastp-acting fuse, electrothermal relay etc.Most of electric components is arranged in this lumen, has both helped waterproof and electric insulation, also be convenient to maintenance in the future.
Compressor 3 is that electricity drives totally enclosed horizontal compressor, by the driven by power that locomotive provides, is arranged in the condensation chamber of air conditioner casing 10, can reduce the length of refrigerant circulation line effectively; Refrigerant circulation line all adopts Welding Structure with syndeton between the parts that are connected with circulation line; Pressure duct between pressure duct between compressor 3 and the condenser 1, condenser 1 and the expansion valve all adopts wall thickness to be not less than 1.2 millimeters thick-walled pipes.Above measure can make system adapt to the higher pressure of R410A cold-producing medium, reduces the hidden danger that the R410A cold-producing medium leaks.
On the pressure duct between compressor 3 and the condenser 1, the high voltage protective switch is housed.On the pressure duct between compressor 3 and the condenser 1, the high voltage protective switch is housed.The relay that compressor is arranged on the compressor power supply circuits, the output connection control circuit of high voltage protective switch, the control end of the output relay termination of control circuit.During the hypertonia of compressor output end output; The high voltage protective switch breaks off; Send the too high guard signal of Compressor Discharge Pressure to control circuit; Control circuit is effectively eliminated the hidden danger that the system condensing high pressure brings through the power supply circuits of relay cut-out compressor, and the system that guaranteed uses the security of R410A cold-producing medium.
The front end face 1002 of air conditioner casing 10 is the inclined-plane of hypsokinesis, and condenser 1 is arranged in the front end of condensation chamber, and condenser 1 hypsokinesis arranges that back rake angle is 76 °.Totally 3 of condensation fans 2,3 condensation fan 2 lateral arrangement at the middle part of condensation chamber, the back of condenser 1.Compressor 3 is arranged in the rear portion of ante-chamber.The front end face 1002 of air conditioner casing 10 has the air intake 1003 of condenser, and the air outlet of condensation fan 2 is arranged at the top 1004 of air conditioner casing 10.
As shown in Figure 5, condenser 1 is a parallel-flow heat exchanger, helps improving the withstand voltage level of condenser.Parallel-flow heat exchanger comprises isocon 11, collecting pipe 12 and complex root flat tube 13, and every flat tube 13 has a plurality of parallel micro channels 1301, and flat tube 13 connects isocon and collecting pipe; The inlet 1101 that is connected with compressor 3 is arranged at isocon 11 tops, the bottom have be connected with expansion valve 6 go out 1102, have dividing plate that isocon is divided into first and second portion in the isocon 11, inlet 1101 is communicated with first, goes out 1102 and is communicated with second portion; Cold-producing medium is cooling gradually in condenser, and volume flow reduces, and the flat tube that directly is communicated with isocon first is more than the flat tube that directly is communicated with the isocon second portion.
As shown in Figure 4, in order to reduce the air intake resistance, the axis of the flat tube 13 cross section major axis not principal plane with condenser 3 is vertical; But the angle that tilts; Like this, in the present embodiment, the angle of the axis of flat tube 13 cross section major axis and air conditioner casing 10 lower planes is 19 °.
Compare other heat exchanger, the advantage that the parallel-flow heat exchanger in the present embodiment has is following: the air side front face area is little, has increased the heat transfer area of air side; Internal volume is little, and the coolant injection amount is little; In light weight; Heat transfer coefficient is high; Windage is little, thereby noise is low.
Air quantity through heat exchanger is big more, and the heat that then heat exchanger obtained is just big more.But go for big more air quantity, just must consume more power of fan, thereby be unfavorable for energy-conservation.Present embodiment condenser 1 is arranged in front end, condenser 1 hypsokinesis of air conditioner casing 10 and arranges; Consider that mainly vehicle at a high speed to overtake; The wind to vehicle is met in the formation that air in the environment is relative; Utilize leading with fan blade of head-on wind, under the situation that consumes identical power of fan, condenser 1 can obtain bigger air quantity.Obtained energy-conservation effect to a certain extent, blower fan also can obtain the preferable performance curve simultaneously, thereby realizes the energy-efficient of air-conditioning system.
The above embodiment of the utility model adopts R410A as cold-producing medium, and gas density and the pressure of R410A are higher than R22, and operating pressure exceeds 50%-60%.The result that high pressure and high gas density are brought is, not only can use the compressor of littler capacity, can also use the more pipeline and the valve of minor diameter.The hidden danger that the system condensing high pressure brings has been eliminated in the use of high voltage protective switch.The system that makes thick compressor housing stands higher operating pressure.Compressor is made to such an extent that more thick and heavyly also have a benefit, and promptly the running noises of R410A compressor is than low significantly 2-4 decibel of R22 compressor.
Compare with the R22 system, it is high by 35% that the R410A system has the heat of significant hot transmission advantage one evaporimeter to transmit, and condenser is high by 5%.And system's heat transfer coefficient of R134a and R407c all is lower than R22.Under the equal quality flow, the pressure drop of R410A is less, and it can be used than R22 or littler pipeline and the valve of other cold-producing mediums.This will reduce more material cost for making the R410A system, and in long pipe arrangement family expenses machine and many on-line systems, more have superiority.Certainly, have only design system again, just can give full play to heat transmission and the little advantage of pressure drop of R410A---for example can consider to take following optimisation technique: use coil pipe than minor diameter; Different fin structures and increase closed circuit length; Reduce the quantity of refrigerating circuit etc.Finally we can see, in the system after designing again to the R410A cold-producing medium, adopt the evaporimeter and the condenser of smaller size smaller, and cost is lower, and reaches as high as 30% refrigerant charging decrease.The minimizing of refrigerant charge except cost reduces, can also promote the reliability of whole system.In identical refrigerating capacity, in the system of identical condensation temperature, adopt the systematic energy efficiency ratio of R410A to exceed 6% than R22.This is that the pressure drop in the whole system is littler because the loss of compressor in compression process is lower, and evaporimeter and condenser have stronger heat transmitting.Heat transmission makes it under identical service condition with littler pressure drop efficiently, and condensation temperature is lower, and evaporating temperature is higher, and this makes compressor in power consumption still less, and efficient obtains a better range of operation than under the higher situation.
Condenser 1 heat exchange area is 0.31 to 0.35 with the ratio of evaporimeter heat exchange area.
The above embodiment of the utility model adopts thick-walled pipe and micro-channel heat exchanger, and it is withstand voltage to have improved system, through adopting totally-enclosed compressor and welding pipeline, resolution system leakage problem.Condenser 1 heat exchange area and the ratio of evaporimeter heat exchange area are being confirmed as under 0.33 the condition; When the operating mode of 4.2 ℃ of suction superheat, 25 ℃ of the exhaust degrees of superheat, 11.5 ℃ of degree of supercoolings, 7 ℃ of evaporating temperatures, 55 ℃ of condensation temperatures; Can obtain the Energy Efficiency Ratio of overhead type on-board air conditioner system 2.65, apparently higher than the Energy Efficiency Ratio of traditional overhead type on-board air conditioner system less than 2.5.

Claims (4)

1. overhead type on-board air conditioner system; Comprise air conditioner casing, condenser, condensation fan, compressor, evaporimeter, evaporation fan, expansion valve, refrigerant circulation line, control circuit and cold-producing medium; It is characterized in that; Comprise the compressor power supply circuits, described compressor is arranged in the casing, is that electricity drives totally enclosed horizontal compressor; Syndeton between described refrigerant circulation line and the parts that are connected with circulation line adopts Welding Structure; Described cold-producing medium is the R410A cold-producing medium; Described condenser is arranged in the front end of air conditioner casing ante-chamber, and described condensation fan is 2 to 4, lateral arrangement at the middle part of ante-chamber, the back of condenser, described compressor is arranged in the rear portion of ante-chamber; The front end of air conditioner casing comprises the air inlet of condenser, and the top of air conditioner casing comprises the air outlet of condensation fan.
2. overhead type on-board air conditioner according to claim 1 system is characterized in that, the pressure duct between the pressure duct between compressor and the condenser, condenser and the expansion valve adopts thick-walled pipe.
3. overhead type on-board air conditioner according to claim 2 system is characterized in that the wall thickness of said thick-walled pipe is not less than 1.2 millimeters.
4. according to the described overhead type on-board air conditioner of arbitrary claim system in the claim 1 to 3, it is characterized in that the condenser heat exchange area is 0.31 to 0.35 with the ratio of evaporimeter heat exchange area.
CN2011202465486U 2011-02-24 2011-02-24 Overhead vehicle-mounted air conditioning system Expired - Lifetime CN202204064U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202465486U CN202204064U (en) 2011-02-24 2011-02-24 Overhead vehicle-mounted air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202465486U CN202204064U (en) 2011-02-24 2011-02-24 Overhead vehicle-mounted air conditioning system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201120046728.X Division 2011-02-24

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CN202204064U true CN202204064U (en) 2012-04-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121669A (en) * 2014-06-06 2014-10-29 冷王公司 Power pack, air conditioning device, power pack manufacturing method and air course guiding method
WO2014205795A1 (en) * 2013-06-28 2014-12-31 Ingersoll Rand (China) Industrial Technologies Housing for vehicle hvac system
CN106240300A (en) * 2016-08-26 2016-12-21 珠海格力电器股份有限公司 A kind of hvac system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014205795A1 (en) * 2013-06-28 2014-12-31 Ingersoll Rand (China) Industrial Technologies Housing for vehicle hvac system
CN104121669A (en) * 2014-06-06 2014-10-29 冷王公司 Power pack, air conditioning device, power pack manufacturing method and air course guiding method
CN104121669B (en) * 2014-06-06 2017-04-12 冷王公司 Power pack, air conditioning device, power pack manufacturing method and air course guiding method
CN106240300A (en) * 2016-08-26 2016-12-21 珠海格力电器股份有限公司 A kind of hvac system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Top-mounted on-vehicle air-conditioning system

Effective date of registration: 20130805

Granted publication date: 20120425

Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Changsha branch

Pledgor: Hunan Vaqoung Electric Co. Ltd.

Registration number: 2011990000240

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20150626

Granted publication date: 20120425

Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Changsha branch

Pledgor: Hunan Vaqoung Electric Co. Ltd.

Registration number: 2011990000240

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120425