CN202370811U - Unloading system for air compressor and electric vehicle - Google Patents
Unloading system for air compressor and electric vehicle Download PDFInfo
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- CN202370811U CN202370811U CN2011204616654U CN201120461665U CN202370811U CN 202370811 U CN202370811 U CN 202370811U CN 2011204616654 U CN2011204616654 U CN 2011204616654U CN 201120461665 U CN201120461665 U CN 201120461665U CN 202370811 U CN202370811 U CN 202370811U
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- air compressor
- air
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Abstract
The utility model discloses an unloading system for an air compressor. The system comprises a motor (3), the air compressor (1) and an energy storage device of a braking system, wherein the system also comprises a dry pressure regulating valve (2); a pressure switch (4) is arranged on the air compressor (1); the pressure switch (4) is communicated with an air outlet valve and an air inlet valve of the air compressor (1) and pneumatically controls the air outlet valve and the air inlet valve of the air compressor (1); the air outlet pipe (5) of the air compressor (1) is connected to the air inlet (9) of the dry pressure regulating valve (2); the control port (7) of the dry pressure regulating valve (2) is connected to the pressure switch (4) through the air inlet pipe (6) of the air compressor (1); and moreover, the air outlet (10) of the dry pressure regulating valve (2) is connected with the energy storage device. According to the unloading system of the air compressor provided by the utility model, the air compressor can provide compressed air for the braking system continuously, and simultaneously the switch between normal running and non-load running of the air compressor can be effectively realized; and therefore, energy source is saved and automatic circulation control is realized.
Description
Technical field
The utility model relates to the electric vehicle field, particularly, and the electric vehicle that relates to a kind of air compressor Load Relief System and have this air compressor Load Relief System.
Background technique
Vehicle braked system substantial connection is to the car load Security, to its reliability requirement than higher.For gas braking electric motor car (EV), drive air compressor and then for braking system provides pressurized gas through motor, thereby under the prerequisite of environmental protection, more will take into full account the economies of the energy.If the energy storage device in the braking system (being gas receiver) is when gas pressure has reached the regulation demand limit; Should make that air compressor dallies, zero load; Thereby energy saving to greatest extent, but air compressor can in time recover to provide pressurized gas when gas pressure is not enough in gas receiver.In addition, consider the particularity of electric compressor, require the pressurized gas of air compressor output at first will face low-pressure gas, can not occur being with carrying starting, cause the damage of motor owing to suddenly in the face of pressurized gas to guarantee air compressor.Wherein, the load of air compressor is to realize through the state of controlling its outlet valve or suction valve with zero load, often opens as long as guarantee the air intake valve of air compressor, just can guarantee that air compressor is unloaded.
The model utility content
The purpose of the utility model provides a kind of air compressor Load Relief System; And electric vehicle with this air compressor Load Relief System; Make that air compressor can be when assurance continues pressurized gas is provided to braking system; Effectively realize the normality operation of air compressor and the switching of no-load running, save the energy and realize automatic cycle control.
For solving the problems of the technologies described above; The utility model provides a kind of air compressor Load Relief System, and this system comprises the energy storage device of motor, air compressor and braking system, wherein; This system also comprises dry pressure regulator valve; Said air compressor is provided with pressure switch, and this pressure switch air pressure is controlled the outlet valve and the suction valve of said air compressor, and the steam outlet pipe of said air compressor is connected to the suction port of said dry pressure regulator valve; And the suction tude of the control mouth of said dry pressure regulator valve through said air compressor is connected to said pressure switch, and the air outlet of said dry pressure regulator valve connects said energy storage device.
Preferably, when the manifold air pressure of said air compressor reached setting value, the pressure switch on the said air compressor can make said outlet valve and suction valve remain open mode.
More preferably, above-mentioned setting value is the atmospheric pressure value of said energy storage device when being in the acting state.
Preferably, said dry pressure regulator valve is provided with relief opening, and this relief opening remains closed condition when the air pressure of said energy storage device is lower than lower limit, and when the air pressure of said energy storage device reaches CLV ceiling limit value, remains open mode.
More preferably, above-mentioned CLV ceiling limit value is the atmospheric pressure value of said energy storage device when being in the acting state.
Preferably, the intake temperature of the joint of the suction port of the steam outlet pipe of said air compressor and said dry pressure regulator valve is not more than 60 °.
More preferably, said steam outlet pipe is a drawn tube, and the length of this drawn tube is no less than 5 meters.
Preferably, the steam outlet pipe of said air compressor is communicated with the outlet valve of said air compressor.
Preferably, this system also comprises power assistance pump for steering, this power assistance pump for steering be installed on the said air compressor and with the coaxial setting of the bent axle of this air compressor.
In addition, the utility model also provides a kind of electric vehicle, and this electric vehicle has the above-mentioned air compressor Load Relief System of the utility model.
Through technique scheme, the air compressor Load Relief System of the utility model is simple in structure, with low cost, can pressurized gas be provided constantly to braking system through air compressor and dry pressure regulator valve, guarantees the reliable operation of braking system.On this basis, but dry pressure regulator valve off-load row pressure, and make the outlet valve of air compressor and suction valve remain open mode through the pressure switch that is communicated with pressurized gas, thus make the no-load running of pneumatics function with energy saving.When the gas pressure deficiency of braking system, the gas pressure that is communicated with pressure switch is not enough, and pressure switch can not make the outlet valve of air compressor and suction valve remain open mode, and then air compressor gets into the acting state again, the control of realization automatic cycle.
Further feature of the utility model and advantage will partly specify in embodiment subsequently.
Description of drawings
Attached drawings is used to provide the further understanding to the utility model; And constitute the part of specification; It is used to explain the utility model with following embodiment, but the protection domain of the utility model is not limited to following accompanying drawing and embodiment.In the accompanying drawings:
Fig. 1 is the structural representation according to the air compressor Load Relief System of a kind of mode of execution of the utility model.
Description of reference numerals:
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model; Should be understood that; Embodiment described herein only is used for explanation and explains the utility model, and the protection domain of the utility model is not limited to following embodiment.
For traditional fuel engine gas braking vehicle; The air compressor that its braking energy source is worn from motor; Because motor is continuously car load the energy is provided; Thereby, promptly can be air compressor stable power resources are provided, and then guarantee normality, the continuous firing of braking system through simple belt or gear transmission.But for electric vehicle, need consider the saving electric energy, thereby need be in the gas receiver of braking system under the sufficient situation of gas, make air compressor no-load running to save the energy.In addition, can reduce number of motors, the motor driving parts are integrated, safeguard to reduce amount of parts, reduce cost and to be convenient to.Reduce and don't influence under the situation of other parts operation at motor, motor moves always, then air compressor no-load running more in time.
For this reason; The utility model provides a kind of air compressor Load Relief System, as shown in Figure 1, this system comprises the energy storage device of motor 3, air compressor 1 and braking system; Wherein this system also comprises dry pressure regulator valve 2; Said air compressor 1 is provided with pressure switch 4, and these pressure switch 4 air pressure are controlled the outlet valve and the suction valve of said air compressor 1, and the steam outlet pipe 5 of said air compressor 1 is connected to the suction port 9 of said dry pressure regulator valve 2; And the suction tude 6 of the control mouth 7 of said dry pressure regulator valve 2 through said air compressor 1 is connected to said pressure switch 4, and the air outlet 10 of said dry pressure regulator valve 2 connects said energy storage device.Wherein air compressor 1 can supply braking system to use, and motor 3 is the energy generator of electric vehicle by motor 3 driving and generating pressurized gas, and whether its operating mode is to connect according to the car load power supply to move.
Through above-mentioned design proposal; The pressurized gas of air compressor 1 output can get into dry pressure regulator valve 2 through steam outlet pipe 5 and carry out the gas pressure adjusting; And pressurized gas can be able to drying through the steam separating action in dry pressure regulator valve 2; The high pressure dry gas can be from the air outlet 10 gets into the energy storage device of braking system, continues to provide the pressurized gas energy to energy storage device.Referring to Fig. 1; The control mouth 7 of said dry pressure regulator valve 2 is positioned at the labyrinth piston top of dry pressure regulator valve 2 and is positioned at dry pressure regulator valve air outlet 10 rear sides; With the air outlet 10 of dry pressure regulator valve 2 is parallelly connected relation; That is to say that the gas pressure in the control mouthfuls 7 is consistent with the pressure of energy storage device all the time, the gases in the control mouthfuls 7 are connected to the pressure switch 4 that is provided with on this air compressor 1 through the suction tude 6 of air compressor 1.If during to energy storage device pressurization inflation; Control mouthful 7 interior air pressure edge up; When reaching the threshold values of pressure switch 4, this pressure switch 4 can make that under the pressurized gas effect outlet valve of air compressor 1 and suction valve remain open mode, thereby makes air compressor 1 no-load running.When the gas pressure in the control mouth 7 was lower than the threshold values of said pressure switch 4, pressure switch 4 lost the control to the outlet valve and the suction valve of air compressor 1, and outlet valve and suction valve can normally open and close, thereby made air compressor 1 reply the normality operation.Wherein, pressure switch 4 is the common member in the air compressor 1, thereby no longer its structure function is given unnecessary details one by one at this.
As previously mentioned, in other words, when suction tude 6 air pressure of said air compressor 1 reached setting value, the pressure switch 4 on the said air compressor 1 can make said outlet valve and suction valve remain open mode.And in this mode of execution, the atmospheric pressure value when said setting value is preferably said energy storage device and is in the acting state.Thereby; When energy storage device is in the acting state, needn't so just should make air compressor 1 no-load running again to this energy storage device pressurization inflation; Make that just the gas pressure that leads to pressure switch 4 reaches its threshold values, thereby make outlet valve and suction valve remain open mode.That is to say the atmospheric pressure value when the critical threshold values of air pressure that pressure switch 4 makes outlet valve and suction valve remain open mode should not be in the acting state less than energy storage device.
Dry pressure regulator valve 2 itself has drying and pressure regulation effect to pressurized gas; Can be to the energy storage device pressurization inflation of braking system; When also can the air pressure in energy storage device reaching certain value; The pressurized gas that air compressor 1 is produced carry out off-load, under the situation of not stall of air compressor, air compressor are played a protective role.Wherein, said dry pressure regulator valve 2 is provided with relief opening 8, and this relief opening 8 remains closed condition when the air pressure of said energy storage device is lower than lower limit, and when the air pressure of said energy storage device reaches CLV ceiling limit value, remains open mode.Atmospheric pressure value when said CLV ceiling limit value is preferably said energy storage device and is in the acting state, just when energy storage device normally did work, the pressurized gas 1 that air compressor 1 is carried carried out the exhaust off-load.
As shown in Figure 1, the steam outlet pipe 5 of said air compressor 1 is preferably with the intake temperature of the joint of the suction port 9 of said dry pressure regulator valve 2 and is not more than 60 °, in order to avoid exceed the predetermined range of dry pressure regulator valve, promptly is generally the pressurized air between 50-60 °.Thereby said steam outlet pipe 5 is designed to drawn tube, and the length of this drawn tube is preferably and is no less than 5 meters, with abundant cooled compressed gas.In addition, the steam outlet pipe 5 of said air compressor 1 is communicated with the outlet valve of said air compressor 1.Like this, under air compressor 1 unloaded state, outlet valve and suction valve remain open mode, thereby the internal compressed gas of the steam outlet pipe 5 that is communicated with outlet valve is released.When the outlet valve closure, when air compressor will get into normal working once more, air compressor just can start smoothly, in braking system, inflated, and the air pressure in the steam outlet pipe 5 also can progressively rise.In the face of pressurized gas occur taking place with regard to the output pressure of having avoided air compressor like this, protected motor with carrying situation about starting suddenly.
In addition, for reducing amount of parts, reduce cost and improving level of integration, the air compressor Load Relief System of the utility model also comprises power assistance pump for steering 11; As shown in Figure 1; This power assistance pump for steering 11 be installed on the said air compressor 1 and with the coaxial setting of the bent axle of this air compressor 1, just motor turns round to drive power assistance pump for steering 11 operations always, so also just drives air compressor 1 and moves always; In this case, air compressor 1 no-load running more in time.
The air compressor Load Relief System of the utility model is simple in structure, and with respect to the relief arrangement and the control gear of complex structural designs, cost is more cheap, but reliability standard is higher, and is easy to use.Particularly, the working procedure of the air compressor Load Relief System of the utility model is, when each car load starts, makes under the situation that the drain tap of air compressor 1 opens in pressure switch 4, and gases have emptied to identical with barometric pressure in the steam outlet pipe 5 of air compressor.Then air compressor 1 normally starts, thereby can inflate toward the gas receiver of braking system through the dry pressure regulator valve 2 of opening state.At this moment, the relief opening 8 of dry pressure regulator valve 2 is closed, and begins and the gas receiver synchronous boost from the mark barometric pressure as the air pressure (being the air pressure of air compressor air intake pipe 6) of the control mouth 7 of air outlet branch.When gas receiver reaches setting value for example behind the 0.8Mpa, braking system gets into working state, and gas receiver air pressure remains 0.8Mpa under this state; Dry 2 of pressure regulator valves are in closed condition, and promptly gas receiver air pressure reaches CLV ceiling limit value 0.8Mpa, relief opening 8 thereby open and the exhaust off-load; At this moment, the air pressure (being the air pressure of air compressor air intake pipe 6) of control mouth 7 reaches 0.8Mpa, thereby makes the air intake valve of air compressor 1 and drain tap open simultaneously through pressure switch 4; Air compressor 1 idle running; Because the drain tap of air compressor 1 is opened, cause the pressurized gas of air compressor steam outlet pipe 5 to be discharged, also just carry out the preparation that air compressor 1 is restarted.Drop at the air pressure of gas receiver and to be lower than lower limit for example during 0.6Mpa, 2 unlatchings of dry pressure regulator valve, promptly relief opening 8 is closed; At this moment; The air pressure (being the air pressure of air compressor air intake pipe 6) of control mouth 7 is consistent with gas receiver, also less than lower limit, thereby makes the suction port of air compressor 1 and relief opening no longer often open through pressure switch 4; Air compressor 1 gets into normal acting state once more, forms the loop control process.
In addition, the utility model also provides a kind of electric vehicle, and this electric vehicle has the above-mentioned air compressor Load Relief System of the utility model.Like this, electric vehicle more can reach the effect of energy saving on the basis that the braking reliability is able to ensure.And, being installed in when moving together on the air compressor power assistance pump for steering is integrated reducing motor, vehicle design is more reasonable, and structure is also more compact.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But the utility model is not limited to the detail in the above-mentioned mode of execution, in the technical conceive scope of the utility model; Can carry out multiple simple variant to the technological scheme of the utility model; For example pressure switch 4 can have the concrete shape and structure of various ways, also can add electric controller with accurate judgement air pressure etc., and these simple change belongs to all in the protection domain of the utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (10)
1. air compressor Load Relief System; This system comprises the energy storage device of motor (3), air compressor (1) and braking system; It is characterized in that this system also comprises dry pressure regulator valve (2), said air compressor (1) is provided with pressure switch (4); This pressure switch (4) air pressure is controlled the outlet valve and the suction valve of said air compressor (1); The steam outlet pipe (5) of said air compressor (1) is connected to the suction port (9) of said dry pressure regulator valve (2), and the suction tude (6) of the control mouth (7) of said dry pressure regulator valve (2) through said air compressor (1) is connected to said pressure switch (4), and the air outlet (10) of said dry pressure regulator valve (2) connects said energy storage device.
2. air compressor Load Relief System according to claim 1 is characterized in that, when the suction tude (6) of said air compressor (1) when air pressure reaches setting value, the pressure switch (4) on the said air compressor (1) can make said outlet valve and suction valve remain open mode.
3. air compressor Load Relief System according to claim 2 is characterized in that, said setting value is the atmospheric pressure value of said energy storage device when being in the acting state.
4. air compressor Load Relief System according to claim 1; It is characterized in that; Said dry pressure regulator valve (2) is provided with relief opening (8); This relief opening (8) remains closed condition when the air pressure of said energy storage device is lower than lower limit, and when the air pressure of said energy storage device reaches CLV ceiling limit value, remains open mode.
5. air compressor Load Relief System according to claim 4 is characterized in that, said CLV ceiling limit value is the atmospheric pressure value of said energy storage device when being in the acting state.
6. air compressor Load Relief System according to claim 1 is characterized in that, the steam outlet pipe (5) of said air compressor (1) is not more than 60 ° with the intake temperature of the joint of the suction port (9) of said dry pressure regulator valve (2).
7. air compressor Load Relief System according to claim 6 is characterized in that, said steam outlet pipe (5) is a drawn tube, and the length of this drawn tube is no less than 5 meters.
8. air compressor Load Relief System according to claim 1 is characterized in that, the steam outlet pipe (5) of said air compressor (1) is communicated with the outlet valve of said air compressor (1).
9. according to any described air compressor Load Relief System among the claim 1-8, it is characterized in that this system also comprises power assistance pump for steering (11), this power assistance pump for steering (11) be installed on that said air compressor (1) is gone up and with the coaxial setting of bent axle of this air compressor (1).
10. an electric vehicle is characterized in that, said electric vehicle has aforesaid right requirement 9 described air compressor Load Relief Systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204616654U CN202370811U (en) | 2011-11-18 | 2011-11-18 | Unloading system for air compressor and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204616654U CN202370811U (en) | 2011-11-18 | 2011-11-18 | Unloading system for air compressor and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370811U true CN202370811U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204616654U Expired - Lifetime CN202370811U (en) | 2011-11-18 | 2011-11-18 | Unloading system for air compressor and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122849A (en) * | 2011-11-18 | 2013-05-29 | 北汽福田汽车股份有限公司 | Air compressor unloading system and electric vehicle |
-
2011
- 2011-11-18 CN CN2011204616654U patent/CN202370811U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122849A (en) * | 2011-11-18 | 2013-05-29 | 北汽福田汽车股份有限公司 | Air compressor unloading system and electric vehicle |
| CN103122849B (en) * | 2011-11-18 | 2015-12-02 | 北汽福田汽车股份有限公司 | Air compressor Load Relief System and electric vehicle |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |