CN212376739U - Well cold system, vehicle driving system and vehicle - Google Patents
Well cold system, vehicle driving system and vehicle Download PDFInfo
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- CN212376739U CN212376739U CN202020548052.3U CN202020548052U CN212376739U CN 212376739 U CN212376739 U CN 212376739U CN 202020548052 U CN202020548052 U CN 202020548052U CN 212376739 U CN212376739 U CN 212376739U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to a vehicle spare part technical field discloses an intercooling system, including intercooling intake pipe (1), intercooler (2) and intercooling outlet duct (3), venthole (4) have been seted up on intercooling intake pipe (1) pipeline, venthole (4) with the pipeline intercommunication of intercooling outlet duct (3), venthole (4) with be equipped with check valve (5) on the air current passageway between intercooling outlet duct (3). Furthermore, the utility model discloses still disclose a vehicle driving system and vehicle. The utility model discloses an inter-cooling system can guarantee that the air that gets into the engine under the high resistance condition has sufficient oxygen content, also can prevent whole car weak condition with higher speed, guarantees the safe of vehicle and traveles.
Description
Technical Field
The utility model belongs to the technical field of vehicle parts, specifically, relate to an intercooling system. Furthermore, the utility model discloses still relate to a vehicle driving system and vehicle including above-mentioned intercooling system.
Background
With the continuous development of engine technology and the requirements of energy conservation and emission reduction, supercharged engines are increasingly applied to automobiles, and an intercooling system is required to be adopted for the use of the supercharged engines. The intercooling system mainly has the function of cooling the pressurized high-temperature and high-pressure gas, introducing the gas into a throttle body through a pipeline, and then entering an engine to participate in combustion. In the use process, the intercooling system meets the requirement of cooling and simultaneously needs to meet the requirement of reducing the resistance of air intake, because when the resistance of air intake is too large, the air density is influenced, under the air with the same volume flow, the oxygen content in the air is reduced, and the gasoline in the engine is insufficiently combusted, so that the performance of the engine is influenced, and the performance of the whole vehicle is further influenced.
In order to ensure the performances of an air-conditioning condenser, a radiator and a fan, the intercooler of a common vehicle adopts a front-lower intercooler, the arrangement structure has the main advantages that the performances of the condenser, the radiator and the fan are not influenced, the defect is that the temperature can not be reduced through the fan, the temperature can be completely reduced through ambient air, the larger the vehicle speed is, the lower the ambient temperature is, and the stronger the cooling capacity of the intercooler is.
On the premise, when the vehicle is used in a severe cold area, the vehicle stops for a period of time after running at high speed for a long time, and the condition of weak acceleration is found when the vehicle is driven again, so that the normal running of the vehicle is influenced. In order to solve the problems, a drain hole is arranged at the lowest point of an air chamber of the intercooler, but oil gas flows out of the drain hole and drips on the lower protective plate to affect the appearance, and even a fire disaster is caused. Meanwhile, the emission requirement of the national six regulations is increased (from 2g to 0.7mg), and oil gas flows out from the drainage hole after the drainage hole is formed, so that the evaporative emission value is deteriorated, and the national energy-saving and emission-reducing requirements are not met.
In view of the above, a new intercooling system is designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the first aspect that provides an intercooling system, this intercooling system can guarantee that the air that gets into the engine under the high resistance condition has sufficient oxygen content, also can prevent whole car and accelerate the adynamic condition, guarantees the safe of vehicle and traveles.
The utility model aims to solve the technical problem of the second aspect provide a vehicle driving system, this vehicle driving system can guarantee that the air that gets into the engine under the high resistance condition has sufficient oxygen content, also can prevent whole car and accelerate the adynamic condition, guarantees the safety of vehicle and traveles.
The utility model aims to solve the technical problem of the third aspect that provides a vehicle, the vehicle driving system of this vehicle can guarantee that the air that gets into the engine under the high resistance condition has sufficient oxygen content, also can prevent whole car and accelerate the weak condition, guarantees the safety of vehicle and traveles.
In order to solve the technical problem, the utility model provides an inter-cooling system in a first aspect, including inter-cooling intake pipe, intercooler and well cold outlet duct, set up the venthole on the inter-cooling intake pipe pipeline, the venthole with the pipeline intercommunication of well cold outlet duct, the venthole with be equipped with the check valve on the air current passageway between the inter-cooling outlet duct.
Preferably, the check valve is a mechanical pressure type check valve.
Further preferably, a branch pipe is connected to the air outlet, and an air outlet is arranged on the branch pipe; the one-way valve comprises an air outlet piston and a one-way valve casing connected with the branch pipe, the air outlet piston is connected with the one-way valve casing through an elastic connecting piece, and the air outlet piston can be abutted against the outer wall of the intercooling air inlet pipe inside the branch pipe.
More preferably, the one-way valve housing is internally provided with a track adapted for the sliding of the outlet piston.
More preferably, a sealing ring is provided between the one-way valve housing and the branch pipe.
Preferably, a vent pipe is connected between the intercooling air inlet pipe in the branch pipe and the one-way valve casing, and a plurality of vent holes are formed in the vent pipe.
Further preferably, the vent holes are uniformly arranged on the pipeline of the vent pipe along the circumferential direction.
Preferably, the intercooling air outlet pipe comprises a first intercooling air outlet pipe and a second intercooling air outlet pipe, and a tee joint is connected between the first intercooling air outlet pipe and the second intercooling air outlet pipe; the air outlet is connected with the three-way joint.
Further preferably, the first intercooling air outlet pipe and the tee joint and the second intercooling air outlet pipe and the tee joint are fixed through clamps.
In a second aspect, the present invention provides a vehicle power system, including the intercooling system according to any one of the above first aspect.
In a third aspect, the present invention provides a vehicle comprising the vehicle power system of the second aspect.
Through the technical scheme, the intercooling system of the utility model connects the intercooling air inlet pipe with the intercooling air outlet pipe, and the one-way valve is arranged at the joint of the intercooling air inlet pipe and the intercooling air outlet pipe, so that when the intercooling air inlet pipe is frozen to cause the resistance of the whole system to be increased, the one-way valve can introduce air into the throttle body, and ensure that the air entering the engine under the high resistance condition has enough high oxygen content, so that the gasoline in the engine is fully combusted, and the condition that the whole vehicle is incapable of accelerating due to insufficient power of the engine is prevented; and the cooling of the pressurized high-pressure gas cannot be influenced by using the check valve under the normal running environment.
Further advantages of the invention, as well as the technical effects of preferred embodiments, will be further explained in the following detailed description.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the intercooling system of the present invention;
FIG. 2 is an exploded view of the check valve of one embodiment of the intercooling system of the present invention;
FIG. 3 is a schematic cross-sectional view of a check valve in an embodiment of the intercooling system of the present invention;
FIG. 4 is a schematic view of a vent pipe in an embodiment of the intercooling system of the present invention;
fig. 5 is an exploded view of the intercooling gas outlet pipe in one embodiment of the intercooling system of the present invention;
FIG. 6 is a schematic cross-sectional view of an intercooling gas outlet pipe in an embodiment of the intercooling system of the present invention;
fig. 7 is a schematic connection diagram of an intercooling system according to an embodiment of the present invention.
Description of the reference numerals
1 intercooler air inlet pipe 2 intercooler
3 intercooling outlet pipe 4 ventholes
5 one-way valve 6 branch pipe
7 seal ring 8 breather pipe
9 three way connection 10 clamp
11 bolt and 12 nut
13 connecting pipe 14 track
15 locking piece
301 first inter-cooling air outlet pipe 302 second inter-cooling air outlet pipe
501 air outlet piston 502 elastic connector
503 one-way valve housing 601 air outlet
801 vent hole
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, fig. 3 and fig. 7, the basic embodiment of the present invention provides an intercooling system, which comprises an intercooling inlet pipe 1, an intercooler 2 and an intercooling outlet pipe 3, wherein the pipeline of the intercooling inlet pipe 1 is provided with an air outlet 4, the air outlet 4 is communicated with the pipeline of the intercooling outlet pipe 3, and a one-way valve 5 is arranged on an air flow channel between the air outlet 4 and the intercooling outlet pipe 3.
Specifically, the air outlet 4 and the cold and medium air outlet pipe 3 may be connected by a connecting pipe 13, or may be connected by other methods. The check valve 5 is a pressure check valve, and can be arranged at the air outlet 4, inside the connecting pipe 13, or at the connection between the connecting pipe 13 and the intercooling air outlet pipe 13. The check valve 5 used here is a one-way air outlet valve, and high-pressure air passing through the check valve can enter the intercooling air outlet pipe 3 from the air outlet hole 4, but high-pressure air cooled by the intercooler 2 does not enter the intercooling air inlet pipe 1 from the check valve 5 after entering the intercooling air outlet pipe 3.
When the intercooling system provided by the basic technical scheme works, pressurized high-pressure gas enters the intercooler 2 from the intercooler air inlet pipe 1, and enters the throttle body through the intercooling air outlet pipe 3 after being cooled by the intercooler 2, in the process, if the temperature is too low, the connection part of the intercooler 2 and the intercooling air outlet pipe 3 is frozen, the resistance of the high-pressure gas entering the intercooling air outlet pipe 3 from the intercooler 2 is increased, so that the intercooling air outlet pipe 3 and the intercooling air inlet pipe 1 generate pressure difference, and the one-way valve 5 is enabled to be in an open state when the pressure difference reaches a certain value, part of gas in the intercooling air inlet pipe 1 enters the intercooling air outlet pipe 3 through the one-way valve 5, so that the pressure difference of the intercooling air inlet pipe 1; when the pressure difference between the two is not enough to open the one-way valve 5, the high-pressure gas passing through the intercooling inlet pipe 1 enters the intercooler 2 to be cooled and then normally enters the intercooling outlet pipe 3.
In the intercooling system provided by the basic technical scheme, the intercooling air inlet pipe 1 and the intercooling air outlet pipe 3 are connected, the one-way valve 5 is arranged at the connection part of the intercooling air inlet pipe 1 and the intercooling air outlet pipe 3, and when the intercooler 2 is frozen to cause the resistance of the whole intercooling system to be increased, the one-way valve 5 can introduce high-pressure gas into the throttle body, so that the high-pressure gas entering the engine under the high resistance condition has enough high oxygen content, the gasoline in the engine is fully combusted, and the condition that the whole vehicle cannot accelerate due to insufficient power of the engine is prevented; and the use of the check valve 5 does not affect the cooling of the pressurized high-pressure gas under the normal running environment.
In an embodiment of the present invention, as shown in fig. 2 and 3, a branch pipe 6 is connected to the air outlet 4, and an air outlet 601 is disposed on the branch pipe 6; the check valve 5 comprises an air outlet piston 501 and a check valve casing 503 connected with the branch pipe 6, and the air outlet piston 501 and the check valve casing 503 are connected through an elastic connector 502 so that the air outlet piston 501 can be abutted against the outer wall of the intercooling inlet pipe 1 in the branch pipe 6.
Specifically, the elastic connector 502 used above may be an elastic connector commonly used in the prior art and capable of abutting the outlet piston 501 against the outer wall of the intercooling inlet pipe 1, and the elastic connector 502 has a resilient property and may be a spring or a connector with a similar property to the spring. Preferably a spring, the spring constant of which is determined by specific experimental values. When the pressure in the intercooling air inlet pipe 1 is higher than that in the intercooling air outlet pipe 3 and the pressure difference between the two reaches a certain value, the pressure difference can drive the air outlet piston 501 to be far away from the air outlet 4, the one-way valve 5 is in an open state, the elastic connecting piece 502 is in a relative compression state, and the larger the pressure difference between the two is, the farther the distance between the air outlet piston 501 and the air outlet 4 is; the pressure in the intercooling inlet pipe 1 is lower than that in the intercooling outlet pipe 3, the elastic connecting piece 502 is in a relatively free state, and the one-way valve 5 is in a closed state.
When the intercooling system provided by the above specific embodiment is installed, the air outlet piston 501 and the elastic connector 502, the elastic connector 502 and the one-way valve housing 503 are respectively connected, 2 to 4 installation holes are formed in the branch pipe 6, the nuts 12 are inserted into the installation holes and fixed, the installation holes are correspondingly arranged with the installation holes in the one-way valve housing 503, the air outlet piston 501 is placed inside the branch pipe 6, the one-way valve housing 503 is fixed on the branch pipe 6 through the bolts 11, and the air outlet 601 is connected with the intercooling air outlet pipe 3, so that high-pressure air passing through the one-way valve 5 can enter the intercooling air outlet pipe 3 through the air outlet 601.
In order to conveniently control the moving direction of the air outlet piston 501, the air outlet piston 501 can return to the original position when there is no pressure difference between the intercooling inlet pipe 1 and the intercooling outlet pipe 3, and the sealing performance of the check valve 5 is ensured, in a specific embodiment of the present invention, as shown in fig. 3, the inside of the one-way valve housing 503 is provided with the track 14 suitable for the sliding of the air outlet piston 501, the track 14 can control the air outlet piston 501 to slide according to the predetermined track 14, and simultaneously, the air outlet piston 501 can return to the original position when the air pressure between the intercooling inlet pipe 1 and the intercooling outlet pipe 3 is balanced. Moreover, this track 14 one side top sets up locking piece 15 in order to prevent that air outlet piston 501 breaks away from track 14 in the slip process, and this locking piece 15 can be the locking piece or be the locking plate, preferably the locking plate, as shown in fig. 3, because the separation area of locking plate is great, can prevent effectively that air outlet piston 503 from warping and breaking away from track 14.
The utility model discloses an among the embodiment, be equipped with sealing washer 7 between one-way valve casing 503 and the branch pipe 6, guarantee that the high-pressure gas who comes out from venthole 4 can pass through gas outlet 601 and get into well cold outlet duct 3, prevent that the high-pressure gas who carries oil gas from spilling from the junction of one-way valve casing 503 and branch pipe 6, cause the potential safety hazard.
High-pressure gas can produce certain noise when flowing, in order to solve above-mentioned problem the utility model discloses an in particular embodiment, be connected with breather pipe 8 between branch 6 inside intercooling intake pipe 3 and the one-way valve casing 503, seted up a plurality of air vents 801 on the breather pipe 8. Preferably, the vent holes 801 are uniformly arranged on the pipe of the breather pipe 8 in the circumferential direction. When high-pressure gas flows, the high-pressure gas can be disturbed by the vent holes 801 on the vent pipe 8, so that noise is reduced.
In one embodiment of the present invention, as shown in fig. 5 and 6, the intercooling air outlet pipe 3 includes a first intercooling air outlet pipe 301 and a second intercooling air outlet pipe 302, and a three-way joint 9 is connected between the first intercooling air outlet pipe 301 and the second intercooling air outlet pipe 302; the air outlet 601 is connected with the three-way joint 9. Wherein, the inlet of the first intercooling air outlet pipe 301 is connected with the three-way joint 9, and the outlet is connected with the throttle body; an inlet of the second intercooling air outlet pipe 302 is connected with an outlet of the intercooler 2, an outlet of the second intercooling air outlet pipe is connected with a three-way joint 9, and the rest of joints in the three-way joint 9 are connected with an air outlet 601 through a connecting pipe 13. Preferably, the first intercooling air outlet pipe 301 and the three-way joint 9 and the second intercooling air outlet pipe 302 and the three-way joint 9 are fixed through clamps 10. The first intercooling air outlet pipe 301 and the three-way joint 9, and the second intercooling air outlet pipe 302 and the three-way joint 9 can be tightly fixed through the clamp 10, so that air leakage is prevented. And simultaneously, the air outlet 601 is conveniently connected with the middle cooling air outlet pipe 3.
In a relatively preferred embodiment of the present invention, as shown in fig. 1-7, the intercooling system comprises an intercooling inlet pipe 1, an intercooler 2 and an intercooling outlet pipe 3 connected in sequence, a branch pipe 6 is connected to a pipeline of the intercooling inlet pipe 1, and an air outlet 601 is arranged on the branch pipe 6; the intercooling air inlet pipe 1 is communicated with a branch pipe 6 through an air outlet hole 4, and a one-way valve 5 is arranged at the branch pipe 6; the one-way valve 5 comprises an air outlet piston 501 and a one-way valve casing 503, the air outlet piston 501 is connected with the one-way valve casing 503 through an elastic connecting piece 502, so that the air outlet piston 501 can be abutted against the outer wall of the intercooling air inlet pipe 1 in the branch pipe 6, and when the elastic connecting piece 502 is in a free state, the air outlet piston 501 can completely cover the air outlet hole 4; a plurality of mounting holes are formed in the one-way valve casing 503, the mounting holes in the branch pipe 6 and the mounting holes in the one-way valve casing 503 are correspondingly formed, nuts 12 are arranged in the mounting holes in the branch pipe 6, bolts 11 are inserted into the mounting holes in the one-way valve casing 503, and the one-way valve casing 503 and the branch pipe 6 are relatively fixed through the matching of the bolts 11 and the nuts 12; a sealing ring 7 is arranged at the joint of the one-way valve shell 503 and the branch pipe 6; a vent pipe 8 is connected between the intercooling air inlet pipe 3 and the one-way valve casing 503 in the branch pipe 6, and the vent pipe 8 is provided with a plurality of vent holes 801 along the circumferential direction; the intercooling air outlet pipe 3 comprises a first intercooling air outlet pipe 301 and a second intercooling air outlet pipe 302, and a three-way joint 9 is connected between the first intercooling air outlet pipe 301 and the second intercooling air outlet pipe 302; the air outlet 601 is connected with one joint of the three-way joint 9 through the connecting pipe 13.
The utility model discloses the intercooling system that above-mentioned preferred embodiment provided, connect intercooling intake pipe 1 and well cold outlet duct 3 through connecting pipe 13, and be equipped with check valve 5 in the junction of intercooling intake pipe 1 and connecting pipe 13, when intercooler 2 freezes and leads to the whole intercooling system resistance to rise, the pressure difference of intercooling intake pipe 1 and well cold outlet duct 3 can impel outlet piston 501 to keep away from venthole 4, some high-pressure gas gets into connecting pipe 13 from venthole 4, then get into the throttle body through intercooling outlet duct 3, in order to reduce the pressure differential between intercooling intake pipe 1 and the well cold outlet duct 3, guarantee that the high-pressure gas that gets into the engine under the high resistance condition has enough high oxygen content, make the petrol in the engine fully burn, prevent the engine power not enough and the circumstances that the whole car; and breather pipe 8 can reach the effect of vortex to reduce the noise of high-pressure gas flow in-process. And when the pressure difference between the intercooling air inlet pipe 1 and the intercooling air outlet pipe 3 does not reach the preset pressure threshold value, the check valve 5 is in a closed state, and the cooling of the pressurized high-pressure gas is not influenced.
In addition, the utility model provides a vehicle driving system, including each embodiment provides the intercooling system.
The utility model discloses an among the concrete implementation way, this automobile power system includes gaseous supercharging device, throttle body and engine well, and gaseous supercharging device's export links to each other with the import of intercooling intake pipe 1, and the throttle body is connected between the export of intercooling outlet duct 3 and engine.
When the vehicle power system provided by the above specific embodiment works, air is pressurized by the gas pressurizing device, enters the intercooling air inlet pipe 1, is cooled by the intercooler 2, and enters the engine to participate in combustion through the intercooling air outlet pipe 3 and the throttle body, in this process, when the connection between the intercooler 2 and the intercooling air outlet pipe 3 is frozen, a pressure difference is generated between the intercooling air inlet pipe 1 and the intercooling air outlet pipe 3, at this moment, part of high-pressure gas enters the intercooling air outlet pipe 3 through the air outlet hole 4 to balance the pressure difference between the intercooling air outlet pipe 3 and ensure that the air entering the engine under the high resistance condition has a sufficiently high oxygen content, so that gasoline in the engine is sufficiently combusted, and the condition that the whole vehicle cannot accelerate due to insufficient power of the engine is.
The utility model also provides a vehicle, the vehicle driving system that provides including above-mentioned each embodiment.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. An intercooling system comprises an intercooling air inlet pipe (1), an intercooler (2) and an intercooling air outlet pipe (3), and is characterized in that an air outlet hole (4) is formed in the pipeline of the intercooling air inlet pipe (1), the air outlet hole (4) is communicated with the pipeline of the intercooling air outlet pipe (3), and a check valve (5) is arranged on an air flow channel between the air outlet hole (4) and the intercooling air outlet pipe (3).
2. Intercooling system according to claim 1, characterized in that the non return valve (5) is a mechanical pressure non return valve.
3. The intercooling system according to claim 2, wherein a branch pipe (6) is connected to the air outlet (4), and an air outlet (601) is arranged on the branch pipe (6);
the check valve (5) comprises an air outlet piston (501) and a check valve casing (503) connected with the branch pipe (6), and the air outlet piston (501) is connected with the check valve casing (503) through an elastic connecting piece (502) so that the air outlet piston (501) can be abutted against the outer wall of the intercooling air inlet pipe (1) in the branch pipe (6).
4. The intercooling system of claim 3, wherein said one-way valve housing (503) is internally provided with a track adapted for sliding of said outlet piston (501).
5. Intercooling system according to claim 3, wherein a sealing ring (7) is provided between the one-way valve housing (503) and the branch pipe (6).
6. The intercooling system according to any one of claims 3-5, wherein a vent pipe (8) is connected between the intercooling inlet pipe (1) inside the branch pipe (6) and the one-way valve casing (503), and a plurality of vent holes (801) are opened on the vent pipe (8).
7. The intercooling system according to any one of claims 1-5, wherein the intercooling outlet pipe (3) comprises a first intercooling outlet pipe (301) and a second intercooling outlet pipe (302), and a tee joint (9) is connected between the first intercooling outlet pipe (301) and the second intercooling outlet pipe (302);
the air outlet (4) is connected with the three-way joint (9).
8. The intercooling system according to claim 7, wherein the first intercooling outlet pipe (301) and the three-way joint (9) and the second intercooling outlet pipe (302) and the three-way joint (9) are fixed by clamps (10).
9. A vehicle powertrain comprising an intercooling system as claimed in any one of claims 1 to 8.
10. A vehicle comprising the vehicle powertrain of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548052.3U CN212376739U (en) | 2020-04-13 | 2020-04-13 | Well cold system, vehicle driving system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548052.3U CN212376739U (en) | 2020-04-13 | 2020-04-13 | Well cold system, vehicle driving system and vehicle |
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| CN212376739U true CN212376739U (en) | 2021-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458278A (en) * | 2021-07-23 | 2021-10-01 | 合肥百恒设备模具有限公司 | Safety control air valve protection structure for machine tool |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458278A (en) * | 2021-07-23 | 2021-10-01 | 合肥百恒设备模具有限公司 | Safety control air valve protection structure for machine tool |
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