Air storage cooling device and cooling method for air spring of vehicle

Abstract

The invention belongs to the technical field of vehicle engineering, and particularly relates to an air storage cooling device and method for an air spring of a vehicle, and the air storage cooling device comprises a cooling loop unit and an air storage tank; an air inlet and an air outlet which are communicated with an inner cavity of the air storage tank are formed in the air storage tank, the air inlet is used for being connected with an air compressor, and the air outlet is used for being connected with an inflation electromagnetic valve of an air spring; the cooling loop unit penetrates through the air storage tank and is used for conveying a refrigerant, so that the refrigerant flows through an inner cavity of the air storage tank to cool air in the air storage tank. According to the air storage cooling device for the air spring of the vehicle, the cooling loop unit is used for cooling air in the air storage tank to adjust the temperature of the air in the air storage tank, so that when the air spring needs to be inflated, the air in the preset temperature range can be injected into the air spring, and the air spring is cooled. The air in the air chamber of the air spring is mixed and cooled.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle engineering, and in particular relates to an air storage cooling device and a cooling method for an air spring of a vehicle. Background Art

[0002] With the rise of domestically produced new energy vehicles, some relatively high-end auto parts have also been transferred to mid- and low-end models. For example, more and more models are equipped with air suspension systems, which can effectively improve the comfort of the vehicle.

[0003] The air spring in the air suspension system is controlled by the charging and discharging solenoid valve to adjust the height of the vehicle body. When the vehicle body needs to be raised, the charging solenoid valve is opened, and air flows from the high-pressure tank into the air spring. As the mass of the gas in the air spring increases, the air pressure increases, pushing the mass on the spring upward; when the vehicle body needs to be lowered, the discharging solenoid valve is opened, and air is discharged from the air spring into the atmosphere. As the mass of the gas in the air spring decreases, the air pressure decreases, and the mass on the spring moves downward. The air pressure sensor monitors the air pressure of the high-pressure tank. When the air pressure is lower than a certain threshold, the air compressor replenishes the high-pressure tank with air.

[0004] When a vehicle equipped with an air suspension system is driving, the temperature of the gas in the gas chamber of the air spring will gradually increase due to bumps in the road. When the temperature of the gas in the gas chamber reaches a certain temperature value, it will have a significant impact on the vibration reduction performance of the air spring and reduce the comfort of the vehicle during driving.

[0005] However, since there is no mature technology to cool the gas in the gas chamber of the air spring, the existing air springs generally have a technical problem of being unable to cool the gas in the gas chamber, which will cause unstable vibration reduction performance. Summary of the invention

[0006] In order to solve the defects of the above-mentioned prior art, the present invention provides an air storage cooling device and a cooling method for a vehicle air spring to solve the technical problem that the existing air springs generally cannot cool the gas in the gas chamber, resulting in unstable vibration reduction performance.

[0007] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: an air storage cooling device for an air spring of a vehicle comprises a cooling circuit unit and an air storage tank;

[0008] The air storage tank is provided with an air inlet and an air outlet connected to its inner cavity, the air inlet is used to be connected to the air compressor, and the air outlet is used to be connected to the inflation solenoid valve of the air spring;

[0009] The cooling circuit unit passes through the gas storage tank, and the cooling circuit unit is used to transport refrigerant so that the refrigerant flows through the inner cavity of the gas storage tank to cool the air in the gas storage tank.

[0010] The cooling circuit unit is utilized to cool the air in the air tank to adjust the temperature of the air in the air tank, so that the air storage cooling device of the vehicle air spring provided by the present invention can, when the air spring needs to be inflated, inject air within a preset temperature range into the air spring to mix with the air in the gas chamber of the air spring for cooling; this solves the technical problem that the existing air springs generally cannot cool the gas in the gas chamber, resulting in unstable vibration reduction performance.

[0011] Furthermore, the gas storage tank is cylindrical and arranged along a first direction; the air inlet is opened at a first end of the gas storage tank, and the air outlet is opened at a second end of the gas storage tank;

[0012] The cooling circuit unit penetrates into the inner cavity of the gas storage tank from the second end, passes through the gas storage tank along the first direction, and then passes out of the gas storage tank from the first end;

[0013] The cooling circuit unit is used to deliver the refrigerant into the gas storage tank from the second end.

[0014] By making the cooling circuit unit deliver the refrigerant from the second end to the air tank, the delivery direction of the refrigerant (from the second end to the first end) is opposite to the charging direction of the gas in the air tank to the air spring (from the first end to the second end), so that the refrigerant can preferentially cool the air in the area of ​​the air tank close to the air outlet side (the air that is usually filled into the air spring, that is, the air in the area of ​​the air tank close to the air outlet side), thereby ensuring that the air filled into the air spring has been sufficiently cooled.

[0015] Furthermore, a plurality of partitions spaced apart along the first direction are provided in the inner cavity of the gas storage tank to divide the inner cavity of the gas storage tank into a plurality of air chambers sequentially arranged along the first direction; and a connecting hole connecting two adjacent air chambers is provided on each of the partitions;

[0016] After the cooling circuit unit penetrates the inner cavity of the gas storage tank, it passes through each of the partitions in sequence along the first direction.

[0017] As the refrigerant continuously absorbs heat and rises in temperature during the process of flowing through each of the air chambers from the second end to the first end in sequence, the air temperature in each of the air chambers will gradually increase from the second end to the first end. When the air storage cooling device of the air spring of a vehicle provided by the present invention is used to inflate the air spring, there is no need to consider the overall cooling effect of the cooling circuit unit on the air in the air storage tank. It is only necessary to ensure that the air temperature in the air chamber close to the second end is within the effective range to ensure that the air temperature transmitted to the air spring is within the effective range, thereby improving the cooling efficiency of the cooling circuit unit and reducing energy consumption.

[0018] Furthermore, the cooling pipe section of the cooling circuit unit located in any of the air chambers is spiral-shaped.

[0019] By configuring the cooling pipe sections of the cooling circuit unit located in any of the air chambers to be spiral, the heat exchange area between the refrigerant in the cooling circuit unit and the air in each of the air chambers can be effectively increased, thereby improving the heat exchange efficiency.

[0020] There are many ways to set up the cooling circuit unit, such as but not limited to: using the existing air conditioning refrigeration circuit of the vehicle, modifying the air conditioning refrigeration circuit, and setting up an independent coolant circulation circuit. The specific technical solutions of the cooling circuit unit include but are not limited to:

[0021] In one of the technical solutions, the cooling circuit unit includes a compressor branch and a passenger compartment refrigeration branch arranged in parallel;

[0022] The compressor branch is provided with a compressor and a condenser in sequence, the passenger compartment refrigeration branch is provided with a first expansion valve and an evaporator in sequence, and the gas storage tank is installed on the passenger compartment refrigeration branch;

[0023] The gas storage tank is installed on the passenger compartment refrigeration branch between the first expansion valve and the evaporator, or on a side of the evaporator away from the first expansion valve;

[0024] The compressor is used to transport the refrigerant to the condenser and then to the passenger compartment refrigeration branch to cool the passenger compartment of the vehicle and to cool the air in the gas storage tank.

[0025] In another technical solution, the cooling circuit unit includes a compressor branch, a passenger compartment refrigeration branch, and an air tank cooling branch arranged in parallel;

[0026] The compressor branch is provided with a compressor and a condenser in sequence, the passenger compartment refrigeration branch is provided with a first expansion valve and an evaporator in sequence, and the gas storage tank cooling branch is provided with a second expansion valve and the gas storage tank in sequence;

[0027] The compressor is used to transport the refrigerant to the condenser and then to the passenger compartment refrigeration branch and / or the air spring cooling branch.

[0028] In another technical solution, the cooling circuit unit includes a coolant circulation circuit and a radiator and a water pump installed on the coolant circulation circuit; the air storage tank is installed on the coolant circulation circuit;

[0029] The water pump is used to pump the refrigerant so that the refrigerant circulates in the coolant circulation loop.

[0030] Furthermore, the air storage cooling device of the air spring of the vehicle further includes a controller and a temperature sensor disposed on the inner wall of the air storage tank;

[0031] The temperature sensor is used to collect air temperature information in the inner cavity of the gas storage tank, and send the collected air temperature information to the controller;

[0032] The controller is used to control the start and stop of the cooling circuit unit according to the received air temperature information, so as to control whether the refrigerant flows through the inner cavity of the air storage tank.

[0033] Furthermore, the temperature sensor is arranged on the inner wall of the air chamber closest to the second end portion. The temperature sensor is used to collect air temperature information in the air chamber closest to the second end portion.

[0034] Based on the air storage cooling device of the air spring of the vehicle provided by the present invention, the present invention also provides an air storage cooling method of the air spring of the vehicle, the air storage cooling method comprising:

[0035] Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller;

[0036] The controller performs detection according to the received air temperature information, and controls the start and stop of the cooling circuit unit according to the detection result, so as to cool the air in the air storage tank when the air temperature in the air storage tank is too high.

[0037] Furthermore, the gas storage cooling method comprises the following steps:

[0038] Step 1: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller;

[0039] Step 2: The controller obtains a first air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the first air temperature. If the first air temperature value is not less than a first preset temperature value, the controller controls the cooling circuit unit to open, so that the refrigerant in the cooling circuit unit flows through the inner cavity of the gas storage tank to cool the air in the gas storage tank, and then proceeds to step 3; if the first air temperature value is less than the first preset temperature value, the controller controls the cooling circuit unit to remain closed, and returns to step 1;

[0040] Step 3: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller;

[0041] Step 4: The controller obtains a second air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the second air temperature. If the second air temperature value is greater than a second preset temperature value, the controller returns to step 3; if the second air temperature value is not greater than the second preset temperature value, the controller controls the cooling circuit unit to be closed, and returns to step 1;

[0042] Wherein, the first preset temperature value is greater than the second preset temperature value.

[0043] By adopting the above method, the air temperature in the gas storage tank can be maintained within an effective range (that is, between the second preset temperature value and the first preset temperature value).

[0044] The air storage cooling device and cooling method of the air spring of a vehicle provided by the present invention have at least the following technical effects or advantages:

[0045] 1. The cooling circuit unit is used to cool the air in the air tank to adjust the temperature of the air in the air tank, so that the air storage cooling device of the air spring of the vehicle provided by the present invention can inject air within a preset temperature range into the air spring when the air spring needs to be inflated, so as to mix with the air in the gas chamber of the air spring to reduce the temperature; the technical problem that the existing air springs generally cannot cool the gas in the gas chamber, resulting in unstable vibration reduction performance, is solved.

[0046] 2. By making the cooling circuit unit deliver the refrigerant from the second end to the air tank, the delivery direction of the refrigerant (from the second end to the first end) is opposite to the charging direction of the gas in the air tank to the air spring (from the first end to the second end), so that the refrigerant can preferentially cool the air in the area of ​​the air tank close to the air outlet (the air that is usually filled into the air spring, that is, the air in the area of ​​the air tank close to the air outlet), thereby ensuring that the air filled into the air spring has been sufficiently cooled.

[0047] 3. As the refrigerant continuously absorbs heat and rises in temperature during the process of flowing through each of the air chambers from the second end to the first end in sequence, the air temperature in each of the air chambers will gradually increase from the second end to the first end. Therefore, when the air storage cooling device of the air spring of the vehicle provided by the present invention is used to inflate the air spring, there is no need to consider the overall cooling effect of the cooling circuit unit on the air in the air storage tank. It is only necessary to ensure that the air temperature in the air chamber close to the second end is within the effective range to ensure that the air temperature transmitted to the air spring is within the effective range, thereby improving the cooling efficiency of the cooling circuit unit and reducing energy consumption.

[0048] 4. By setting the cooling pipe section of the cooling circuit unit located in any of the air chambers to be spiral, the heat exchange area between the refrigerant in the cooling circuit unit and the air in each of the air chambers can be effectively increased, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1 is a schematic diagram of the assembly structure of the cooling circuit unit and the gas storage tank in Example 1;

[0051] Figure 2 is a perspective schematic diagram of the assembly structure of the cooling circuit unit and the gas storage tank in Example 1;

[0052] Figure 3 is a schematic structural diagram of the portion of the cooling circuit unit passing through the gas storage tank in Example 1;

[0053] Figure 4 is a schematic diagram of the topological structure of the air storage cooling device of the air spring of the vehicle in Example 1;

[0054] Figure 5 is a schematic diagram of the topological structure of the air storage cooling device of the air spring of the vehicle in Example 2;

[0055] Figure 6 is a schematic diagram of the topological structure of the air storage cooling device of the air spring of the vehicle in Example 3;

[0056] Among them, 1—cooling circuit unit, 2—gas storage tank;

[0057] 2.1—air inlet, 2.2—air outlet, 2.3—first end, 2.4—second end, 2.5—partition, 2.6—air chamber;

[0058] 2.5.1—Communication holes;

[0059] 1.1—Cooling pipe section, 1.2—Compressor, 1.3—Condenser, 1.4—First expansion valve, 1.5—Evaporator, 1.6—Second expansion valve, 1.7—Intermediate heat exchanger, 1.8—Coolant circulation loop, 1.9—Radiator, 1.10—Water pump. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0061] Embodiment 1:

[0062] like Figure 1 As shown, embodiment 1 provides an air storage cooling device for an air spring of a vehicle, comprising a cooling circuit unit 1 and an air storage tank 2;

[0063] The air storage tank 2 is provided with an air inlet 2.1 and an air outlet 2.2 communicating with the inner cavity thereof. The air inlet 2.1 is used to be connected to the air compressor, and the air outlet 2.2 is used to be connected to the charging solenoid valve of the air spring.

[0064] The cooling circuit unit 1 passes through the gas storage tank 2 , and is used to transport a refrigerant so that the refrigerant flows through the inner cavity of the gas storage tank 2 to cool the air in the gas storage tank 2 .

[0065] The cooling circuit unit 1 is used to cool the air in the air tank 2 to adjust the temperature of the air in the air tank 2, so that the air storage cooling device of the vehicle air spring provided by the present invention can, when the air spring needs to be inflated, rush air within a preset temperature range into the air spring to mix with the air in the gas chamber of the air spring for cooling; this solves the technical problem that the existing air springs generally cannot cool the gas in the gas chamber, resulting in unstable vibration reduction performance.

[0066] In one embodiment, if Figure 1 and Figure 2 As shown, the gas storage tank 2 is cylindrical and arranged along a first direction; the air inlet 2.1 is opened at a first end 2.3 of the gas storage tank 2, and the air outlet 2.2 is opened at a second end 2.4 of the gas storage tank 2;

[0067] The cooling circuit unit 1 penetrates into the inner cavity of the gas storage tank 2 from the second end 2.4, passes through the gas storage tank 2 along the first direction, and then passes out of the gas storage tank 2 from the first end 2.3;

[0068] The cooling circuit unit 1 is used to deliver the refrigerant into the gas storage tank 2 from the second end 2.4.

[0069] By making the cooling circuit unit 1 deliver the refrigerant from the second end 2.4 into the gas tank 2, the delivery direction of the refrigerant (from the second end 2.4 to the first end 2.3) is opposite to the charging direction of the gas in the gas tank 2 to the air spring (from the first end 2.3 to the second end 2.4), so that the refrigerant can preferentially cool the air in the area near the air outlet 2.2 in the gas tank 2 (the air that is usually filled into the air spring, that is, the air in the area near the air outlet 2.2 in the gas tank 2), thereby ensuring that the air filled into the air spring has been sufficiently cooled.

[0070] Preferably, in this embodiment 1, Figure 2 As shown, a plurality of partitions 2.5 (specifically, in this embodiment 1, the number of the partitions 2.5 is three) arranged at intervals along the first direction are provided in the inner cavity of the gas storage tank 2; the inner cavity of the gas storage tank 2 is divided into a plurality of air chambers 2.6 (specifically, in this embodiment 1, the number of the air chambers 2.6 is four) arranged in sequence along the first direction; a connecting hole 2.5.1 for connecting two adjacent air chambers 2.6 is provided on each partition 2.5;

[0071] After the cooling circuit unit 1 penetrates the inner cavity of the gas storage tank 2, it passes through each partition 2.5 in sequence along the first direction.

[0072] As the refrigerant flows through each air chamber 2.6 in sequence from the second end 2.4 to the first end 2.3, the refrigerant will continuously absorb heat and rise in temperature, and the air temperature in each air chamber 2.6 will gradually increase from the second end 2.4 to the first end 2.3. When the air spring is inflated by the air storage cooling device of the air spring of the vehicle provided by the present invention, there is no need to consider the overall cooling effect of the cooling circuit unit 1 on the air in the air tank 2. It is only necessary to ensure that the air temperature in the air chamber 2.6 close to the second end 2.4 is within the effective range, so as to ensure that the air temperature transmitted to the air spring is within the effective range, thereby improving the cooling efficiency of the cooling circuit unit 1 and reducing energy consumption.

[0073] Preferably, in this embodiment 1, Figure 2 and Figure 3 As shown, the cooling pipe section 1.1 of the cooling circuit unit 1 located in any air chamber 2.6 is spiral-shaped.

[0074] By setting the cooling pipe section 1.1 of the cooling circuit unit 1 located in any air chamber 2.6 to be spiral, the heat exchange area between the refrigerant in the cooling circuit unit 1 and the air in each air chamber 2.6 can be effectively increased, thereby improving the heat exchange efficiency.

[0075] There are many ways to set up the cooling circuit unit 1, such as but not limited to: using the existing air conditioning refrigeration circuit of the vehicle, modifying the air conditioning refrigeration circuit, and setting up an independent coolant circulation circuit.

[0076] In this embodiment 1, Figure 4 As shown, the cooling circuit unit 1 includes a compressor branch and a passenger compartment refrigeration branch arranged in parallel;

[0077] A compressor 1.2 and a condenser 1.3 are arranged in sequence on the compressor branch, a first expansion valve 1.4 and an evaporator 1.5 are arranged in sequence on the passenger compartment refrigeration branch, and a gas storage tank 2 is installed on the passenger compartment refrigeration branch;

[0078] The installation position of the gas storage tank 2 on the passenger compartment refrigeration branch is located between the first expansion valve 1.4 and the evaporator 1.5, or located on the side of the evaporator 1.5 away from the first expansion valve 1.4;

[0079] The compressor 1.2 is used to transport the refrigerant to the condenser 1.3 and then to the passenger compartment refrigeration branch to refrigerate the passenger compartment of the vehicle and to cool the air in the gas storage tank 2.

[0080] Specifically, in this embodiment 1, Figure 4 As shown, the cooling circuit unit 1 also includes an intermediate heat exchanger 1.7 arranged on the compressor branch, and the intermediate heat exchanger 1.7 includes a first heat exchange channel and a second heat exchange channel. The inlet of the first heat exchange channel is connected to the refrigerant outlet of the condenser 8, and the outlet is connected to one end of the passenger compartment refrigeration branch. The outlet of the second heat exchange channel is connected to the refrigerant inlet of the compressor 7, and the inlet is connected to the other end of the passenger compartment refrigeration branch.

[0081] Specifically, in this embodiment 1, the air storage cooling device of the air spring of the vehicle further includes a controller and a temperature sensor arranged on the inner wall of the air storage tank 2;

[0082] The temperature sensor is used to collect the air temperature information in the inner cavity of the gas storage tank 2, and send the collected air temperature information to the controller;

[0083] The controller is used to control the start and stop of the cooling circuit unit 1 according to the received air temperature information, so as to control whether the refrigerant flows through the inner cavity of the gas storage tank 2.

[0084] Specifically, in this embodiment 1, the temperature sensor is disposed on the inner wall of the air chamber 2.6 closest to the second end 2.4. The temperature sensor is used to collect air temperature information in the air chamber 2.6 closest to the second end 2.4.

[0085] Embodiment 2:

[0086] Embodiment 2 provides an air storage cooling device for an air spring of a vehicle, wherein the structural features of the air storage tank 2 are the same as those of the air storage tank 2 in Embodiment 1, and the difference lies in the different arrangement of the cooling circuit unit 1.

[0087] In this embodiment 2, Figure 5 As shown, the cooling circuit unit 1 includes a compressor branch, a passenger compartment refrigeration branch and an air tank 2 cooling branch arranged in parallel;

[0088] The compressor branch is provided with a compressor 1.2 and a condenser 1.3 in sequence, the passenger compartment refrigeration branch is provided with a first expansion valve 1.4 and an evaporator 1.5 in sequence, and the gas storage tank 2 cooling branch is provided with a second expansion valve 1.6 and a gas storage tank 2 in sequence;

[0089] The compressor 1.2 is used to transport the refrigerant to the condenser 1.3 and then to the passenger compartment refrigeration branch and / or the air spring cooling branch.

[0090] Embodiment 3:

[0091] Embodiment 3 provides an air storage cooling device for an air spring of a vehicle, wherein the structural features of the air storage tank 2 are the same as those of the air storage tank 2 in Embodiment 1, and the difference lies in the different arrangement of the cooling circuit unit 1.

[0092] In this embodiment 3, Figure 6 As shown, the cooling circuit unit 1 includes a coolant circulation circuit 1.8 and a radiator 1.9 and a water pump 1.10 installed on the coolant circulation circuit 1.8; the air storage tank 2 is installed on the coolant circulation circuit 1.8;

[0093] The water pump 1.10 is used to pump the refrigerant so that the refrigerant circulates in the coolant circulation loop 1.8.

[0094] Embodiment 4:

[0095] Based on the air storage cooling device for the air spring of the vehicle provided in Example 1, Example 4 provides an air storage cooling method for the air spring of the vehicle, the air storage cooling method comprising:

[0096] Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank 2, and sending the collected air temperature information to the controller;

[0097] The controller performs detection according to the received air temperature information, and controls the start and stop of the cooling circuit unit 1 according to the detection result, so as to cool the air in the air storage tank 2 when the air temperature in the air storage tank 2 is too high.

[0098] Specifically, the gas storage cooling method comprises the following steps:

[0099] Step 1: Use a temperature sensor to collect air temperature information in the inner cavity of the air storage tank 2, and send the collected air temperature information to the controller;

[0100] Step 2: The controller obtains a first air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the first air temperature. If the first air temperature value is not less than the first preset temperature value, the controller controls the cooling circuit unit 1 to open, so that the refrigerant in the cooling circuit unit 1 flows through the inner cavity of the gas storage tank 2 to cool the air in the gas storage tank 2, and then proceeds to step 3; if the first air temperature value is less than the first preset temperature value, the controller controls the cooling circuit unit 1 to remain closed, and returns to step 1;

[0101] Step 3: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank 2, and sending the collected air temperature information to the controller;

[0102] Step 4: The controller obtains a second air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the second air temperature. If the second air temperature value is greater than the second preset temperature value, the controller returns to step 3; if the second air temperature value is not greater than the second preset temperature value, the controller controls the cooling circuit unit 1 to be closed, and returns to step 1;

[0103] Wherein, the first preset temperature value is greater than the second preset temperature value.

[0104] By adopting the above method, the air temperature in the gas storage tank 2 can be maintained within an effective range (that is, between the second preset temperature value and the first preset temperature value).

[0105] The air storage cooling device and cooling method of the air spring of a vehicle provided by the present invention have at least the following technical effects or advantages:

[0106] 1. The cooling circuit unit 1 is used to cool the air in the air tank 2 to adjust the temperature of the air in the air tank 2, so that the air storage cooling device of the air spring of the vehicle provided by the present invention can inject air within a preset temperature range into the air spring when the air spring needs to be inflated, so as to mix and cool the air in the gas chamber of the air spring, thereby solving the technical problem that the existing air springs generally cannot cool the gas in the gas chamber, resulting in unstable vibration reduction performance.

[0107] 2. By making the cooling circuit unit 1 deliver the refrigerant from the second end 2.4 to the gas tank 2, the delivery direction of the refrigerant (from the second end 2.4 to the first end 2.3) is opposite to the inflation direction of the gas in the gas tank 2 to the air spring (from the first end 2.3 to the second end 2.4), so that the refrigerant can preferentially cool the air in the area near the air outlet 2.2 in the gas tank 2 (the air that is usually filled into the air spring, that is, the air in the area near the air outlet 2.2 in the gas tank 2), thereby ensuring that the air filled into the air spring has been sufficiently cooled.

[0108] 3. As the refrigerant continuously absorbs heat and heats up as it flows through each air chamber 2.6 from the second end 2.4 to the first end 2.3, the air temperature in each air chamber 2.6 gradually increases from the second end 2.4 to the first end 2.3. When the air spring is inflated by the air storage cooling device of the air spring of the vehicle provided by the present invention, there is no need to consider the overall cooling effect of the cooling circuit unit 1 on the air in the air storage tank 2. It is only necessary to ensure that the air temperature in the air chamber 2.6 close to the second end 2.4 is within the effective range to ensure that the air temperature transmitted to the air spring is within the effective range, thereby improving the cooling efficiency of the cooling circuit unit 1 and reducing energy consumption.

[0109] 4. By setting the cooling pipe section 1.1 of the cooling circuit unit 1 located in any air chamber 2.6 to be spiral, the heat exchange area between the refrigerant in the cooling circuit unit 1 and the air in each air chamber 2.6 can be effectively increased, thereby improving the heat exchange efficiency.

[0110] The above are only specific application examples of the present invention and do not constitute any limitation to the protection scope of the present invention. Any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. An air storage cooling device for an air spring of a vehicle, characterized in that: include: Cooling circuit unit and air tank; The air storage tank is provided with an air inlet and an air outlet connected to its inner cavity, the air inlet is used to be connected to the air compressor, and the air outlet is used to be connected to the inflation solenoid valve of the air spring; The cooling circuit unit passes through the gas storage tank, and the cooling circuit unit is used to transport refrigerant so that the refrigerant flows through the inner cavity of the gas storage tank to cool the air in the gas storage tank.

2. The air storage cooling device for the air spring of a vehicle according to claim 1, characterized in that: The gas storage tank is cylindrical and arranged along a first direction; the air inlet is opened at a first end of the gas storage tank, and the air outlet is opened at a second end of the gas storage tank; The cooling circuit unit penetrates into the inner cavity of the gas storage tank from the second end, passes through the gas storage tank along the first direction, and then passes out of the gas storage tank from the first end; The cooling circuit unit is used to deliver the refrigerant into the gas storage tank from the second end.

3. The air storage cooling device for the air spring of a vehicle according to claim 2, characterized in that: The inner cavity of the gas storage tank is provided with a plurality of partitions arranged at intervals along the first direction, so as to divide the inner cavity of the gas storage tank into a plurality of air chambers arranged in sequence along the first direction; and a connecting hole connecting two adjacent air chambers is provided on each of the partitions; After the cooling circuit unit penetrates the inner cavity of the gas storage tank, it passes through each of the partitions in sequence along the first direction.

4. The air storage cooling device for the air spring of a vehicle according to claim 3, characterized in that: The cooling pipe section of the cooling circuit unit located in any of the air chambers is spiral-shaped.

5. The air storage cooling device for the air spring of a vehicle according to claim 1, characterized in that: The cooling circuit unit includes a compressor branch and a passenger compartment refrigeration branch arranged in parallel; The compressor branch is provided with a compressor and a condenser in sequence, the passenger compartment refrigeration branch is provided with a first expansion valve and an evaporator in sequence, and the gas storage tank is installed on the passenger compartment refrigeration branch; The gas storage tank is installed on the passenger compartment refrigeration branch between the first expansion valve and the evaporator, or on a side of the evaporator away from the first expansion valve; The compressor is used to transport the refrigerant to the condenser and then to the passenger compartment refrigeration branch to cool the passenger compartment of the vehicle and to cool the air in the gas storage tank.

6. The air storage cooling device for the air spring of a vehicle according to claim 1, characterized in that: The cooling circuit unit comprises a compressor branch, a passenger compartment refrigeration branch and an air tank cooling branch arranged in parallel; The compressor branch is provided with a compressor and a condenser in sequence, the passenger compartment refrigeration branch is provided with a first expansion valve and an evaporator in sequence, and the gas storage tank cooling branch is provided with a second expansion valve and the gas storage tank in sequence; The compressor is used to transport the refrigerant to the condenser and then to the passenger compartment refrigeration branch and / or the air spring cooling branch.

7. The air storage cooling device for an air spring of a vehicle according to claim 1, characterized in that: The cooling circuit unit comprises a coolant circulation circuit and a radiator and a water pump installed on the coolant circulation circuit; the air storage tank is installed on the coolant circulation circuit; The water pump is used to pump the refrigerant so that the refrigerant circulates in the coolant circulation loop.

8. The air storage cooling device for an air spring of a vehicle according to claim 1, characterized in that: Also includes a controller and a temperature sensor disposed on the inner wall of the gas storage tank; The temperature sensor is used to collect air temperature information in the inner cavity of the gas storage tank, and send the collected air temperature information to the controller; The controller is used to control the start and stop of the cooling circuit unit according to the received air temperature information, so as to control whether the refrigerant flows through the inner cavity of the air storage tank.

9. A method for cooling air storage of an air spring of a vehicle, characterized in that: The air storage cooling device for the air spring of a vehicle according to claim 8 is implemented, and the air storage cooling method comprises: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller; The controller performs detection according to the received air temperature information, and controls the start and stop of the cooling circuit unit according to the detection result, so as to cool the air in the air storage tank when the air temperature in the air storage tank is too high.

10. The air storage cooling method for an air spring of a vehicle according to claim 9, characterized in that: The gas storage cooling method comprises the following steps: Step 1: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller; Step 2: The controller obtains a first air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the first air temperature. If the first air temperature value is not less than a first preset temperature value, the controller controls the cooling circuit unit to open, so that the refrigerant in the cooling circuit unit flows through the inner cavity of the gas storage tank to cool the air in the gas storage tank, and then proceeds to step 3; if the first air temperature value is less than the first preset temperature value, the controller controls the cooling circuit unit to remain closed, and returns to step 1; Step 3: Using a temperature sensor to collect air temperature information in the inner cavity of the gas storage tank, and sending the collected air temperature information to a controller; Step 4: The controller obtains a second air temperature value in the inner cavity according to the received air temperature information, and performs detection according to the second air temperature. If the second air temperature value is greater than a second preset temperature value, the controller returns to step 3; if the second air temperature value is not greater than the second preset temperature value, the controller controls the cooling circuit unit to be closed, and returns to step 1; Wherein, the first preset temperature value is greater than the second preset temperature value.

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