CN205536728U - Passenger train air conditioner defrosting system - Google Patents
Passenger train air conditioner defrosting system Download PDFInfo
- Publication number
- CN205536728U CN205536728U CN201620214892.XU CN201620214892U CN205536728U CN 205536728 U CN205536728 U CN 205536728U CN 201620214892 U CN201620214892 U CN 201620214892U CN 205536728 U CN205536728 U CN 205536728U
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- China
- Prior art keywords
- valve
- sensing device
- vaporizer
- temperature sensing
- evaporimeter
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Abstract
The utility model discloses a passenger train air conditioner defrosting system, first evaporimeter is connected with a temperature sensing device through first valve, and the 2nd temperature sensing device is connected with first evaporimeter through the third valve, a temperature sensing device is connected with the second evaporimeter through four valves, and the second evaporimeter is connected with the 2nd temperature sensing device through the 5th valve, be equipped with the sleeve pipe on the coil pipe of second evaporimeter, the sleeve pipe is connected with the water tank of passenger train. The utility model discloses an increase the evaporimeter in original passenger train air conditioning system, add the sleeve pipe on the coil pipe of evaporimeter, refrigerant in the realization coil pipe carries out the heat exchange with the water in the water tank, prevent that winter temperature from crossing that the evaporimeter frosts when low, do not influence simultaneously air conditioning system's refrigeration and the process of heating at ordinary times, can effectually defrost when making the passenger train move under the environment below 0 DEG C, the effectual operation under low temperature environment of passenger train air conditioning system has been guaranteed, passenger train air conditioning system's practicality and reliability have been improved.
Description
Technical field
This utility model relates to the technical field of hvac system, is specifically related to a kind of coach air conditioner defrosting system, utilizes double evaporators to carry out automatically controlling defrosting, it is adaptable to the hvac system on market.
Background technology
Along with developing rapidly of Chinese national economy and improving constantly of living standards of the people, bus industry is the same with other industry, also obtain development rapidly.Coach air conditioner designer gets more and more, and requires more and more higher to design.The people of many other industries is the most more and more concerned about reasonability and the economy of hvac system vaporizer defroster design.The appearance of energy crisis the most in recent years, the improving constantly of environmental consciousness, propose new more stern challenge to passenger-car air-conditioning evaporator defroster design.Accordingly, it is capable to no reasonable, efficient, practical, economic passenger-car air-conditioning evaporator defrosting system of designing has become the research direction of current various countries coach air conditioner industry.
Installing and using of hvac system is the important guarantee that passenger feels comfortably cool in railway carriage.But vaporizer defrosting problem can not get well improving in the environment that present hvac system is below 0 DEG C always, passenger vehicle long-play below 0 DEG C, evaporator plate tube-surface slowly can bear frost.If can not defrost timely and effectively, evaporator coil internal refrigeration storage agent flux diminishing gradually, enough heats can not be provided to affect the operation of air conditioning system for compartment, and coil pipe outer surface also due to frosting and make draught area reduce, flow resistance increase, have impact on the operation of hvac system to a great extent, it is therefore necessary to vaporizer defrosting mode is designed.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of coach air conditioner defrosting system, can effectively defrost, it is ensured that hvac system the most effectively runs when running in the environment of making passenger vehicle below 0 DEG C.
In order to achieve the above object, the technical solution of the utility model is: a kind of coach air conditioner defrosting system, including the first vaporizer, four-way change-over valve, condenser, compressor and throttling arrangement, described first vaporizer is connected by the first valve and the first temperature sensing device, first temperature sensing device passes through four-way change-over valve, second valve is connected with compressor, compressor is connected with condenser by four-way change-over valve, condenser is connected with throttling arrangement, throttling arrangement and the second temperature sensing device are connected, second temperature sensing device is connected by the 3rd valve and the first vaporizer；Described first temperature sensing device is connected by the 4th valve and the second vaporizer, and the second vaporizer is connected by the 5th valve and the second temperature sensing device；The coil pipe of described second vaporizer is provided with sleeve pipe, and sleeve pipe is connected with the water tank of passenger vehicle.
The pipeline of described water outlet of water tank is provided with effusion meter and defecator, and defecator is connected with sleeve pipe by pipeline.
Pipeline between described four-way change-over valve and condenser is provided with temperature-sensitive bag, and the pipeline between condenser and throttling arrangement is provided with expansion valve, and temperature-sensitive bag is connected with expansion valve.
The beneficial effects of the utility model: by increasing vaporizer in original hvac system, the coil pipe of vaporizer is set up sleeve pipe, the cold-producing medium realized in coil pipe carries out heat exchange with the water in water tank, evaporimeter frosting when preventing winter temperature too low, do not affect refrigeration and the heating operations of air conditioning system at ordinary times simultaneously, can effectively defrost when running in the environment of making passenger vehicle below 0 DEG C, ensure that hvac system the most effectively runs, improve practicality and the reliability of hvac system.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the system diagram of this utility model coach air conditioner defrosting system.
Wherein, 1 is the first temperature sensing device, and 2 is the first valve, and 3 is the 4th valve, 4 is the second vaporizer, and 5 is the first vaporizer, and 6 is defecator, and 7 is effusion meter, 8 is water tank, and 9 is the 5th valve, and 10 is the 3rd valve, and 11 is the second temperature sensing device, 12 is throttling arrangement, and 13 is expansion valve, and 14 is vaporizer, 15 is temperature-sensitive bag, and 16 is compressor, and 17 is four-way change-over valve, 18 is coil pipe, and 19 is sleeve pipe, and 20 is the second valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not paying creative work premise, broadly fall into the scope of this utility model protection.
As shown in Figure 1, a kind of coach air conditioner defrosting system, including the first vaporizer 5, four-way change-over valve 17, condenser 14, compressor 16 and throttling arrangement 12, first vaporizer 5 is connected with the first temperature sensing device 1 by the first valve 2, first temperature sensing device 1 is by four-way change-over valve 17, second valve 20 is connected with compressor 16, compressor 16 is connected with condenser 14 by four-way change-over valve 17, condenser 14 is connected with throttling arrangement 12, throttling arrangement 12 is connected with the second temperature sensing device 11, second temperature sensing device 11 is connected with the first vaporizer 5 by the 3rd valve 10.First temperature sensing device 1 is connected with the second vaporizer 4 by the 4th valve 3, and the second vaporizer 4 is connected with the second temperature sensing device 11 by the 5th valve 9.First valve 2 and the 3rd valve 10 are for controlling whether the first vaporizer 5 works, and when the first valve 2 and the 3rd valve 10 are opened, the first vaporizer 5 realizes work, and when the first valve 2 and the 3rd valve 10 are closed, the first vaporizer 5 quits work.4th valve 3 and the 5th valve 9 are for controlling whether the second vaporizer 4 works, and when the 4th valve 3 and the 5th valve 9 are opened, the second vaporizer 4 realizes work, and when the 4th valve 3 and the 5th valve 9 are closed, the second vaporizer 4 quits work.First temperature sensing device 1 and the second temperature sensing device 11 ambient temperature of pipeline before and after detection the first vaporizer 5 or the second vaporizer 4.According to the ambient temperature of the pipeline that the first temperature sensing device 1 and the second temperature sensing device 11 detect, the control system of coach air conditioner controls the first valve 2 and the 3rd valve the 10, the 4th valve 3 and either on or off of the 5th valve 9.First vaporizer 5 hvac system when ambient temperature is more than 0 DEG C freezes or heats, and facilitates the first vaporizer 5 to carry out heat exchange with external environment condition.Hvac system when second vaporizer 4 is mainly used in ambient temperature more than 0 DEG C heats.
Second vaporizer 4 is provided with coil pipe 18, and coil pipe 18 is connected with pipeline, and coil pipe 18 can circulate and be provided with cold-producing medium.Coil pipe 18 is provided with sleeve pipe 19, and the diameter of sleeve pipe 19 is more slightly larger than the diameter of coil pipe 18.Sleeve pipe 19 is connected with the water tank 8 of passenger vehicle, and the water inside water tank 8 carries out water circulation after carrying out heat exchange by pipeline with the cold-producing medium in sleeve pipe 19, effectively prevent the frosting of coil pipe 18.
The pipeline of water tank 8 outlet is provided with effusion meter 7 and defecator 6, and defecator 6 is connected with sleeve pipe 19 by pipeline.Effusion meter 7 is for detecting the flow velocity of the water entering sleeve pipe 19, and the filtering residue of water tank 8 is carried out filtering cleaning by defecator 6, it is ensured that enter the mobility of the water of sleeve pipe 19, it is achieved carry out continuous print heat exchange with the cold-producing medium in coil pipe 18.The heat supply produced when the temperature of the water in water tank 8 is run by passenger vehicle, transmits heat by sleeve pipe 19 to the second vaporizer 4, prevents coil pipe 18 frosting in the second vaporizer 4.Added with antifreezing agent in water in water tank 8, prevent the water inside water tank 8 from freezing below 0 DEG C.
Pipeline between four-way change-over valve 17 and condenser 14 is provided with temperature-sensitive bag 15, and the pipeline between condenser 14 and throttling arrangement 12 is provided with expansion valve 13, and temperature-sensitive bag 15 is connected with expansion valve 13.The degree of superheat of cold-producing medium after compressor 16 exports experienced by temperature-sensitive bag 15, thus controls the open degree of expansion valve 13, changes the size of the refrigerant flow flowing to throttling arrangement, thus controls the degree of superheat of the outlet cold-producing medium of compressor 16 in the range of suitably.
In the winter time, ambient temperature is at less than 0 DEG C in most cases, and therefore the first vaporizer 5 needs defrosting.When passenger vehicle runs, first temperature sensing device 1 and the second temperature sensing device 11 can detect the ambient temperature on refrigerant line automatically, when temperature is below 0 DEG C, first valve 2 and the 3rd valve 10 can be automatically switched off by the control system of passenger vehicle, and the 4th valve 3 and the 5th valve 9 automatically open up, second vaporizer 4 enters duty, compressor 16 is discharged high temperature and high pressure gas and is entered condenser 14 through four-way change-over valve 17, high temperature and high pressure gas is transformed into highly pressurised liquid by the cooling condensation of the condensed device of cold-producing medium 14, cold-producing medium heat release simultaneously, personnel in supply passenger car need；Low temperature low pressure liquid is become after the throttling action of cold-producing medium continuation flow restriction device 12, the second vaporizer 4 is flowed to again through the 5th valve 9, temperature-sensitive bag 15 can be experienced compressor 16 and exports the degree of superheat of cold-producing medium in the process, thus control the open degree of expansion valve 13, change the size of the refrigerant flow flowing to throttling arrangement 12, thus control compressor 16 outlet superheat degree in the range of suitably.Cold-producing medium gasifies in the second vaporizer 4 and absorbs heat in this process, and the water in water tank 8 flows between sleeve pipe and pipeline always, can provide heat for cold-producing medium evaporation in the coil pipe 18 of the second vaporizer 4 continuously.Flowed to compressor 16 through the 4th valve 3 by four-way change-over valve 17 from the second vaporizer 4 low temperature and low pressure steam out and complete a circulation.Winter, the second vaporizer 4 outside passenger car will not frosting, solve winter passenger car evaporimeter frosting problem.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.
Claims (3)
1. a coach air conditioner defrosting system, including the first vaporizer (5), four-way change-over valve (17), condenser (14), compressor (16) and throttling arrangement (12), it is characterized in that: described first vaporizer (5) is connected with the first temperature sensing device (1) by the first valve (2), first temperature sensing device (1) passes through four-way change-over valve (17), second valve (20) is connected with compressor (16), compressor (16) is connected with condenser (14) by four-way change-over valve (17), condenser (14) is connected with throttling arrangement (12), throttling arrangement (12) is connected with the second temperature sensing device (11), second temperature sensing device (11) is connected with the first vaporizer (5) by the 3rd valve (10)；Described first temperature sensing device (1) is connected with the second vaporizer (4) by the 4th valve (3), and the second vaporizer (4) is connected with the second temperature sensing device (11) by the 5th valve (9)；The coil pipe (18) of described second vaporizer (4) is provided with sleeve pipe (19), and sleeve pipe (19) is connected with the water tank (8) of passenger vehicle.
Coach air conditioner defrosting system the most according to claim 1, it is characterised in that the pipeline of described water tank (8) outlet is provided with effusion meter (7) and defecator (6), defecator (6) is connected with sleeve pipe (19) by pipeline.
Coach air conditioner defrosting system the most according to claim 1 and 2, it is characterized in that, pipeline between described four-way change-over valve (17) and condenser (14) is provided with temperature-sensitive bag (15), pipeline between condenser (14) and throttling arrangement (12) is provided with expansion valve (13), and temperature-sensitive bag (15) is connected with expansion valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620214892.XU CN205536728U (en) | 2016-03-21 | 2016-03-21 | Passenger train air conditioner defrosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620214892.XU CN205536728U (en) | 2016-03-21 | 2016-03-21 | Passenger train air conditioner defrosting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205536728U true CN205536728U (en) | 2016-08-31 |
Family
ID=56783187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620214892.XU Expired - Fee Related CN205536728U (en) | 2016-03-21 | 2016-03-21 | Passenger train air conditioner defrosting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205536728U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679254A (en) * | 2016-12-15 | 2017-05-17 | 中原工学院 | Vortex tube defrosting system for heat pump type passenger car air conditioner system |
| CN107399220A (en) * | 2017-07-18 | 2017-11-28 | 郴州市中马汽车空调有限公司 | A kind of super low temperature heat pump type electric automobile air conditioner |
-
2016
- 2016-03-21 CN CN201620214892.XU patent/CN205536728U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679254A (en) * | 2016-12-15 | 2017-05-17 | 中原工学院 | Vortex tube defrosting system for heat pump type passenger car air conditioner system |
| CN106679254B (en) * | 2016-12-15 | 2019-06-21 | 中原工学院 | Vortex tube for pump type heat hvac system removes defrosting system |
| CN107399220A (en) * | 2017-07-18 | 2017-11-28 | 郴州市中马汽车空调有限公司 | A kind of super low temperature heat pump type electric automobile air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180321 |