CN201844605U - Direct-current variable frequency electric air conditioning system of engineering truck - Google Patents
Direct-current variable frequency electric air conditioning system of engineering truck Download PDFInfo
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- CN201844605U CN201844605U CN2010206135279U CN201020613527U CN201844605U CN 201844605 U CN201844605 U CN 201844605U CN 2010206135279 U CN2010206135279 U CN 2010206135279U CN 201020613527 U CN201020613527 U CN 201020613527U CN 201844605 U CN201844605 U CN 201844605U
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- engineering truck
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- reversing valve
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Abstract
The utility model discloses a direct-current variable frequency electric air conditioning system of an engineering truck, which belongs to an air conditioning device of the engineering truck. The direct-current variable frequency electric air conditioning system comprises a compressor, a variable frequency controller, an evaporator, a condenser and a four-way reversing valve; the variable frequency controller, the evaporator, the condenser and the four-way reversing valve are connected with the compressor; the compressor adopts an electric compressor, and a low-voltage direct-current power supply formed by host batteries of the engineering truck is connected with the compressor through variable frequency controller so as to drive the compressor to work; and the exhaust rear high-pressure side of the compressor is also connected with the four-way reversing valve in series, the port D of the four-way reversing valve is connected with the condenser through a pipeline, the port A of the four-way reversing valve is connected with the exhaust port of the compressor through a pipeline, the port B of the four-way reversing valve is connected with the evaporator through a pipeline, and the port C of the four-way reversing valve is connected with the air inlet of the compressor through a pipeline. The refrigerant flow direction in the four-way reversing valve can be changed for refrigeration or heating. The direct-current variable frequency electric air conditioning system of the engineering truck has a simple structure and stable performance and is easy to install. Due to the variable frequency control, the intermittent starting/stoppage of the compressor and large power consumption in the starting/stoppage process are avoided, the service life is prolonged, and the cab comfortableness is improved.
Description
Technical field
The utility model relates to a kind of auto air-con, specifically is a kind of engineering truck DC frequency-changing electric air-conditioning system.
Background technology
Along with growth in the living standard, people require more and more higher to operating environment, and the probability of engineering truck assembling air-conditioning is also progressively increasing.Engineering auto air-con in the market mainly drives the belt drives compressor operating by the main frame engine, and it is main by the engine cooling water heating that circulates to heat part, so air conditioner refrigerating, heating effect all is subjected to the main frame engine influences.Another type of drive is a hydraulic-driven, hydraulic-driven air-conditioning refrigeration system and the independently fuel heating system significantly increase that brings cost and quality fault, simultaneously also cause the wasting of resources and environmental pollution, and complex structure, installation is loaded down with trivial details, system's operational reliability is poor.
Summary of the invention
The purpose of this utility model provides a kind of engineering truck DC frequency-changing electric air-conditioning system.
The purpose of this utility model is achieved in that a kind of engineering truck with DC frequency-changing electric air-conditioning system, comprises compressor, the frequency-variable controller that is connected with compressor, evaporimeter, condenser and four-way change-over valve; It is characterized in that: described compressor is a motor compressor, and engineering truck cell host low-voltage dc power supply is connected the work of drive compression machine by frequency-variable controller with compressor; The high-pressure side also is in series with four-way change-over valve behind compressor air-discharging, the D valve port of four-way change-over valve is connected with condenser by pipeline, the A valve port is connected with exhaust outlet of compressor by pipeline, and the B valve port is connected with evaporimeter by pipeline, and the C valve port is connected with compressor inlet by pipeline.Realize refrigeration or heat work by the flow direction that changes the four-way change-over valve inner refrigerant.
Frequency-variable controller is connected the data acquisition module that is used for collecting temperature signal and control signal by main control module with main control module, the compressor control module that is connected with main control module is formed.
The beneficial effects of the utility model are: adopt dc source to drive the DC frequency converting air-conditioner system and freeze, heat work, simple in structure, easy for installation, intermittently big consumption of electric in the start and stop of property and the shutdown process of compressor has been avoided in stable performance, and compressor adopts VFC, make it be in continuous operating condition, its life-span is long, economical environment-protective, and operating mode is stable.This air-conditioning system is not limited by the main frame operating condition simultaneously, thereby has improved the driving indoor comfort.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model structure principle chart.
Fig. 2 is the utility model electric control theory diagram.
Among the figure: 1, air-conditioning switch, 2, frequency-variable controller, 3, compressor, 4, four-way change-over valve, 5, evaporimeter, 6, condenser, 7, the throttling expansion device, 8, control signal, 2-1, main control module, 2-2, data acquisition module, 2-3, compressor control module.Refrigerant flow direction when dotted arrow is depicted as refrigeration, solid arrow is depicted as refrigerant flow direction when heating.
The specific embodiment
As shown in Figure 1, the utility model comprises compressor 3, the frequency-variable controller 2 that is connected with compressor 3, evaporimeter 5, condenser 6 and four-way change-over valve 4; Described compressor 3 is a motor compressor, and present embodiment compressor 3 adopts the compressor of driven by Brush-Less DC motor.Engineering truck cell host low-voltage dc power supply is connected 3 work of drive compression machine by frequency-variable controller 2 with compressor 3; The high-pressure side also is in series with four-way change-over valve 4 behind compressor air-discharging, the D valve port of four-way change-over valve 4 is connected with condenser 6 by pipeline, the A valve port is connected with compressor 3 exhaust outlets by pipeline, and the B valve port is connected with evaporimeter 5 by pipeline, and the C valve port is connected with compressor 3 air inlets by pipeline.
As shown in Figure 2, the frequency-variable controller 2 of present embodiment is connected the data acquisition module 2-2 that is used for collecting temperature signal and control signal by main control module 2-1 with main control module 2-1, and the compressor control module 2-3 that is connected with main control module 2-1 forms.Data acquisition module 2-2 is used for gathering in real time the interior temperature signal of driver's cabin and the control signal of input.Storing control program in the main control module 2-1.
Operation principle is: after opening air-conditioning switch 1, the main control module 2-1 of frequency-variable controller 2 connects host power supply, realize each port initialization system mode collection, the data acquisition module 2-2 of frequency-variable controller 2 gathers the control signal of Air-Conditioning Control Panel 8 outputs, and according to the design temperature sensing signal, temperature sensing signal in the driver's cabin, definite refrigerating capacity that needs, give compressor 3 by compressor control module 2-3 output control signal corresponding then, the dynamo-electric machine entry into service of drive compression, the inverse electromotive force that cutting magnetic line produces during the rotor rotation feeds back to compressor control module 2-3, and compressor control module 2-3 judges by detecting this back-emf signal whether motor speed reaches setting value.When rotating speed did not reach, the compressor control module 2-3 of frequency-variable controller 2 regulates the power switch pipe switching speed automatically promoted gradually until setting rotating speed motor speed.
During the air-conditioning system refrigerating operaton, the higher pressure refrigerant gas that compressor 3 is discharged enters condenser 6 through the D of four-way change-over valve 4 valve port and dispels the heat outside driver's cabin, enter evaporimeter 5 through throttling expansion device 7 again, get back to compressor 3 by the C mouth inflow B valve port of four-way change-over valve 4 again, thereby finish kind of refrigeration cycle.
During the air-conditioning system heating operation, the higher pressure refrigerant gas that compressor 3 is discharged enters evaporimeter 5 through the C of four-way change-over valve 4 valve port and dispels the heat in driver's cabin, enter condenser 6 through throttling expansion device 7 again, get back to compressor 3 by the D mouth inflow B valve port of four-way change-over valve 4 again, heat circulation thereby finish.
This air-conditioning system also can realize deciding the rotating speed operation.
The motor outage quits work in the compressor when temperature is lower than set temperature, and controller starts compressor refrigeration system work when temperature raises.When compressor stall, overload, low speed, compressor housing overheated, the controller close compressor, the time delay module time-delay was restarted in about 3 minutes, the unlikely damage of protection compressor, so this compressor safety and long service life.Make the stability of this air-conditioning system performance also obtain abundant assurance.
Claims (3)
1. an engineering truck comprises compressor (3), the frequency-variable controller (2) that is connected with compressor (3), evaporimeter (5), condenser (6) and four-way change-over valve (4) with DC frequency-changing electric air-conditioning system; It is characterized in that: described compressor (3) is a motor compressor, and engineering truck cell host low-voltage dc power supply is connected drive compression machine (3) work by frequency-variable controller (2) with compressor (3); The high-pressure side also is in series with four-way change-over valve (4) behind compressor air-discharging, the D valve port of four-way change-over valve (4) is connected with condenser (6) by pipeline, the A valve port is connected with compressor (3) exhaust outlet by pipeline, the B valve port is connected with evaporimeter (5) by pipeline, and the C valve port is connected with compressor (3) air inlet by pipeline.
2. engineering truck according to claim 1 DC frequency-changing electric air-conditioning system, it is characterized in that: described frequency-variable controller (2) is by main control module (2-1), be connected the data acquisition module (2-2) that is used for collecting temperature signal and control signal with main control module (2-1), the compressor control module (2-3) that is connected with main control module (2-1) is formed.
3. engineering truck according to claim 1 is characterized in that: the compressor of compressor employing driven by Brush-Less DC motor with DC frequency-changing electric air-conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206135279U CN201844605U (en) | 2010-11-09 | 2010-11-09 | Direct-current variable frequency electric air conditioning system of engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206135279U CN201844605U (en) | 2010-11-09 | 2010-11-09 | Direct-current variable frequency electric air conditioning system of engineering truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844605U true CN201844605U (en) | 2011-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206135279U Expired - Lifetime CN201844605U (en) | 2010-11-09 | 2010-11-09 | Direct-current variable frequency electric air conditioning system of engineering truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510045A (en) * | 2011-10-24 | 2012-06-20 | 常州艾可泰自动化设备有限公司 | Power supply controller of centrifugal-type brushless motor for regulating temperature in automobile seat |
| CN102889649A (en) * | 2011-07-18 | 2013-01-23 | 王康平 | Air-conditioner |
| CN109849612A (en) * | 2018-12-28 | 2019-06-07 | 上海理工大学 | A kind of free-standing heat pump air conditioning system of truck parking |
-
2010
- 2010-11-09 CN CN2010206135279U patent/CN201844605U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889649A (en) * | 2011-07-18 | 2013-01-23 | 王康平 | Air-conditioner |
| CN102889649B (en) * | 2011-07-18 | 2015-05-20 | 王康平 | Air-conditioner |
| CN102510045A (en) * | 2011-10-24 | 2012-06-20 | 常州艾可泰自动化设备有限公司 | Power supply controller of centrifugal-type brushless motor for regulating temperature in automobile seat |
| CN109849612A (en) * | 2018-12-28 | 2019-06-07 | 上海理工大学 | A kind of free-standing heat pump air conditioning system of truck parking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |