Compressor driving device of bus with air conditioner

An automotive compressor and transmission technology, which is applied to machines/engines, supporting machines, mechanical equipment, etc., can solve the problems of the compressor bracket being easily deformed by force, the passengers are uncomfortable and not very adaptable, etc., and the structure is simple, Improved comfort and reduced manufacturing costs

Inactive Publication Date: 2009-10-21

SONGZ AUTOMOBILE AIR CONDITIONING

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AI-Extracted Technical Summary

Problems solved by technology

[0004] In most cases, the space position of the engine compartment is only enough to install the compressor, generator and speed change mechanism, so the compression spring for balance has to be arranged behind the generator (see attached figure 2 ), in this case the compressor bracket is easily deformed by force

Since the compressor is fixed on the chassis of the car through the compressor bracket with a rigid structure, the strong vibration generated by the air-conditioning compressor will be transmitted to the passengers, causing some passengers in the rear row to ride uncomfortable; at the same time, the strong vibration generated by the air-conditioning compressor It will also affect the use effect of some ...

Method used

It is ideal position (for the mandrel supporting seat 11 of existing structure in accompanying drawing 3) that the two ends of the mandrel 7 of compressor support 6 are provided with damping rubber device, one is that two play a supporting role The distance between the vibration-damping rubber sleeves 15 is large, and the bearing capacity is good; the second is that the place where the vibration-damping rubber sleeves 15 is set is large, which provides better condit...

Abstract

The invention relates to a compressor driving device of a bus with an air conditioner, which comprises a generator, a compressor, an engine drive wheel, a compressor bracket, a core shaft, a compression spring and a generator, wherein the compressor is arranged on the compressor bracket, a flexible mounting structure adopting a supporting seat of the compressor bracket can wing around the core shaft without a speed-change mechanism and a transition wheel, the engine drive wheel directly drives the compressor, two ends of the core shaft are provided with a vibration reducing rubber device and a supporting seat thereof, wherein the vibration reducing rubber device consists of a transition sleeve and a vibration reducing rubber sleeve; and a vibration reducing rubber piece is arranged between the compression spring and the compressor bracket. The invention simplifies the compressor bracket so as to reduce the weight, improves the drive efficiency, prolongs the service life of working parts of the compressor, lowers the manufacture cost, more importantly prevents the vibration when the compressor of the bus with the air conditioner operates from influencing passengers, and can obviously improve the comfort of the passengers by bus.

Application Domain

Piston pumpsSpecial foundation layout +1

Technology Topic

Electric generatorDrive wheel

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Examples

Experimental program(1)

Example Embodiment

[0034] The specific implementation of the compressor transmission device of the bus air-conditioning automobile of the present invention is given below in conjunction with the accompanying drawings.

[0035] See attached Figure 4. A compressor transmission device for a bus air-conditioning automobile, comprising a generator 1, a compressor 2, an engine driving wheel 5, a compressor bracket 6, a mandrel 7, a compression spring 8, and the generator 1 and compressor 2 are arranged on the compressor bracket 6 Above, the flexible installation structure in which the support seat of the compressor bracket 6 can swing around the core shaft 7 is adopted. The present invention no longer has the transmission mechanism 3 and the transition wheel 4. The engine driving wheel 5 directly drives the compressor 2. For this reason, the engine and the compressor The drive wheels of the machine must match.

[0036] Since the rated speed of the engine matched to the air-conditioned bus in our country ranges from 2000rpm, 2100rpm, 2200rpm, 2300rpm, 2400rpm, 2500rpm, 2600rpm, 2800rpm, 3000rpm, etc., the outer diameter size of the matching driving wheel on the engine ranges from 175 to 260 mm in diameter. There are about 10 different specifications. Some of the air-conditioned buses are used for urban public transportation and some are used for long-distance passenger transportation. However, the compressor speed requirements for the two types of air-conditioned buses are different. If the engine with the above rated speed is installed, it can be matched at will Drive wheels with outer diameters within the above range; since the size of the transmission wheel on the compressor clutch is also limited, the compressor 2 can obtain the required speed only through the speed change of the transition wheel 4 in general. If an engine with a rated speed has a small matching range, a drive wheel of a certain size is provided, and a compressor clutch drive wheel of a corresponding size is matched, the engine can directly drive the compressor to obtain the speed required by the compressor.

[0037] To this end, the requirements for matching the engine and compressor drive wheels are:

[0038] (1) When the engine speed is 2000rpm, match the engine pulley with a diameter of 260mm;

[0039] (2) When the engine speed is 2100rpm, 2200rpm, matching the engine pulley with diameter of 240, 260mm;

[0040] (3) When the engine speed is 2300rpm, 2400rpm, match the engine pulley with diameter of 220mm and 230mm;

[0041] (4) When the engine speed is 2500rpm, 2600rpm, match the engine pulley with diameter of 200, 210mm;

[0042] (5) When the engine speed is 2700rpm, 2800rpm, match the engine pulley with diameter of 190mm and 200mm;

[0043] (6) When the engine speed is 3000rpm, match the engine pulleys with diameters of 180 and 190mm.

[0044] If the engine is matched with a C-slot pulley, the outer diameter of the pulley is increased by 10 mm according to the above size.

[0045] According to the different conditions of the above engine, the pulley of the compressor clutch can be selected from the following pulleys with different outer diameters: φ175mm, φ190mm, φ200, φ210mm, φ220mm.

[0046] See attached Figure 5. A compression spring 8 is still used on the compressor support 6, but a vibration damping rubber 16 is provided between the compression spring 8 and the compressor support 6 (on the spring force point 9) to increase the anti-vibration effect.

[0047] See attached Figure 6 ,7. Two ends of the mandrel 7 of the compressor bracket 6 are provided with a vibration damping rubber device support seat 13, and the vibration damping rubber device support seat 3 is composed of a support housing shell 14, a transition sleeve 12 and a vibration damping rubber sleeve 15. Adopting a vibration damping rubber device can achieve a good effect of attenuating the vibration of the compressor 2.

[0048] The vibration damping rubber device is set at the supports at both ends of the mandrel 7 of the compressor bracket 6, which supports the radial force of the mandrel 7. The lower left or lower right of the mandrel 7 has a large supporting force; in the force of the front and rear supports , The supporting force at the end of the transmission wheel (ie attached Figure 6 On the right) is larger; the force of the entire compressor transmission is borne by two damping rubber devices.

[0049] It is an ideal position to install damping rubber devices at both ends of the mandrel 7 of the compressor bracket 6 (for attachment image 3 In the existing structure of the core shaft support seat 11), one is that the distance between the two supporting vibration damping rubber sleeves 15 is large, and the bearing capacity is good; the second is that the space for setting the vibration damping rubber sleeve 15 is large, which is for design A good damping rubber device provides better conditions; third, damping rubber sleeves 15 are arranged at both ends of the mandrel 7 to facilitate universal use in various types of air-conditioned vehicles.

[0050] See attached Figure 8. In order to make the damping rubber sleeve 15 have a sufficient supporting area, a larger and longer transition sleeve 12 is added to the ends of the mandrel 7 supported at the front and rear. The transition sleeve 12 is tightly sleeved on the mandrel 7 to reduce vibration The rubber sleeve 15 is sleeved on the outside of the transition sleeve 11. In order to adapt to the radial force of the mandrel 7 in different directions, the damping rubber sleeve 15 is designed as a special-shaped structure. The surrounding walls are not of the same thickness. The upper part is thinner and the bottom part is thicker, so that the place where the supporting force is strong has enough thickness (currently 15 mm).

[0051] Considering that the force that the compressor bracket 6 bears is relatively complicated, the size and stiffness value of the damping rubber sleeve 15 can be designed as: the stiffness value under the mandrel 7 is 120kgF/mm±15%.

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Classification and recommendation of technical efficacy words

High transmission efficiency
Improve performance

Compressor driving device of bus with air conditioner

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Examples

Example Embodiment

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Description & Claims & Application Information

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