CN2799908Y

CN2799908Y - Piston of swash plate type piston compressor

Info

Publication number: CN2799908Y
Application number: CNU200520042747XU
Authority: CN
Inventors: 李春银; 樊灵; 葛峥琰
Original assignee: Shanghai Sanden Behr Automotive Air Conditioning Co Ltd
Current assignee: Shanghai Sanden Behr Automotive Air Conditioning Co Ltd
Priority date: 2005-06-22
Filing date: 2005-06-22
Publication date: 2006-07-26
Anticipated expiration: 2015-06-22

Abstract

The utility model discloses a piston of a swash plate type piston compressor, which comprises a piston rod and a piston plate that are connected with each other, wherein the head part of the piston rod is provided with two pieces of sliding shoes and the piston plate is provided with a first working surface and a second working surface. A main shaft rotates and drives a swash plate to rotate, and through the action of the sliding shoes, the piston makes reciprocating linear movement. A first working chamber is formed from the first working surface, a cylinder body and a valve plate, and a second working chamber is formed from the second working surface, a cylinder body and a clamp plate. When the piston moves right, working media in the first working chamber is compressed, air in the first working chamber is exhausted, and meanwhile, working media in the second working chamber enters the first working chamber. Therefore, an air suction process is realized. When the piston moves left, working media in the second working chamber is compressed, air in the second working chamber is exhausted, and meanwhile, working media in the first working chamber enters the second working chamber. Therefore, a suction process is realized. With the adoption of the technical scheme of the utility model, the compressor piston disclosed by the utility model realizes that when the main shaft of a compressor completes one-circle rotation, two compressing process are completed, and under the condition that the size of the compressor is not changed, the displacement is improved.

Description

The piston of ramp type piston compressor

Technical field

The utility model relates to a kind of piston that is used for air condition compressor, and in particular, the utility model relates to the piston structure of ramp type piston compressor in the automobile air conditioner compressor.

Background technique

In tilted-plate compressor, two types piston is arranged: a kind of is single acting piston, as shown in Figure 1, a working surface 24A is arranged.Fig. 2 illustrates the working state of single face work compressor piston 200, main shaft 21 rotations drive swash plate 22 and rotate, by 23 effects of two crawler shoes piston 24 is done reciprocating linear motion vertically, working surface of piston 24A and cylinder block 25 and valve plate 26 constitute active chamber 27, piston 24 moves to left, and active chamber 27 is air-breathing, and piston 24 moves to right, compression process is finished in the active chamber exhaust.Another kind of piston is a bidirectional piston, as shown in Figure 3, a left side is arranged, right 2 working

surface

44A and 44B, Fig. 4 illustrates the working state of duplex cylinder compressor piston 400, main shaft 41 rotations drive swash plate 42 and rotate, by 43 effects of two crawler shoes, thereby piston 44 is done reciprocating linear motion vertically, working surface of piston 44A and rear-bank rotor housing 45, valve plate 46A constitutes active chamber 47A, working surface of piston 44B and front-bank rotor housing 48, valve plate 46B constitutes active chamber 47B, when piston moves to right, active chamber 47A compression, exhaust, active chamber 47B is air-breathing, when piston moves to left, active chamber 47B compression, exhaust, active chamber 47A is air-breathing, thereby has realized the working procedure of bi-directional compression.

For piston compressor, the size of revolution discharge capacity depends on factors such as piston cylinder number, piston diameter, piston stroke, particularly automobile air conditioner compressor is installed on the motor usually, because the spatial constraints of motor, requiring under the certain situation of decrement discharge capacity, all make every effort to the miniaturization of compressor volume, in above-mentioned two types piston compressor, if under the identical situation of discharge capacity, though bidirectional piston compressor cylinder number is many, the compressor axial length is bigger; To the single acting piston compressor, though axial dimension is little, reach a fixed displacement, must increase piston diameter and piston number, thereby make the compressor radial dimension with big, external form increases.

So just need a kind of compressor piston can overcome compressor in compression process if improve discharge capacity then the compressor volume need the big shortcoming of phase strain.

The model utility content

The purpose of this utility model provides a kind of piston, and it can overcome the shortcoming that will improve the just necessary corresponding increase compressor volume of ramp type piston compressor discharge capacity in the automobile air conditioner compressor.

According to the utility model, a kind of piston of ramp type piston compressor, comprise by riveted joint or screw fastener and connect piston rod and piston plate, piston rod head is installed two crawler shoes, piston plate has first working surface and second working surface, main axis rotation drives swash plate and rotates, and by the crawler shoe effect, piston is done reciprocating linear motion; Wherein, first working surface and cylinder block and valve plate constitute first active chamber, and second working surface and cylinder block and clamping plate constitute second active chamber; Wherein when piston moved to right, the interior working medium of first active chamber was compressed, exhaust, and the second active chamber working medium enters simultaneously, realizes breathing process; When piston moved to left, the interior working medium of second active chamber was compressed, exhaust, and the first active chamber working medium enters simultaneously, realizes breathing process.

According to an embodiment of the present utility model, the diameter of piston plate is φ 31～33mm, and diameter of piston rod is φ 9～11mm.

According to an embodiment of the present utility model, the diameter of piston plate is φ 32mm, and the diameter of piston rod is φ 10mm.

According to an embodiment of the present utility model, piston rod is connected by riveted joint or screw fastener with piston plate.

According to an embodiment of the present utility model, two hemisphere holes of described piston rod head processing are used to install two crawler shoes.

Adopted the technical solution of the utility model, the piston of ramp type piston compressor is finished twice compression process and has been satisfied and improve compressor displacement and the constant demand of compressor volume by realizing that main shaft whenever turns around in the automobile air conditioner compressor of the present utility model.

Description of drawings

The above and other feature of the utility model, character and advantage will further describe below in conjunction with the accompanying drawings and embodiments, and identical in the accompanying drawings reference character is represented identical feature all the time, wherein,

Fig. 1 is the single acting piston structure diagram.

Fig. 2 is the phase diagram of single acting piston compressor operating.

Fig. 3 is the bidirectional piston structure diagram.

Fig. 4 is the phase diagram of bidirectional piston compressor operating.

Fig. 5 is the two-way piston structure sketch according to the utility model embodiment.

Fig. 6 is a two-way piston compressor working state figure of following according to the utility model embodiment.

Embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

With reference to figure 5 and Fig. 6, Fig. 5 shows the structure of piston of ramp type piston compressor in a kind of automobile air conditioner compressor, and Fig. 6 shows a two-way piston compressor working state figure.Ramp type piston compressor piston 500 of the present utility model comprises that piston rod 51 is connected by riveted joint or screw fastener with piston plate 52, two hemisphere holes of piston rod 51 heads processing, be used to install two crawler shoes 63, piston plate 52 has the first working surface 64A and the second working surface 64B; During work, main shaft 61 rotations drive swash plate 62 and rotate, and by crawler shoe 63 effects, piston 64 are done reciprocating linear motion; The first working surface 64A and cylinder block 66 and valve plate 68 constitute the first active chamber 67A, and the second working surface 64B and cylinder block 66 and clamping plate 65 constitute the second active chamber 67B.In the course of the work, piston 64 moves to right, the first cavity 67A is compressed, high-pressure medium enters hyperbaric chamber 612 by exhaust valve plate 610, realize exhaust process, simultaneously, the second cavity 67B increases, and medium enters air intake passage 69A by low-pressure cavity 611 through air-intake valve plate 614, enter the second cavity 67B again through clamping plate 65 upper channel 613A, realize breathing process; Piston 64 moves to left, the second cavity 67B is compressed, high-pressure medium enters exhaust passage 69B by clamping plate 65 upper channel 613B and advances hyperbaric chamber 612 through exhaust valve plate 610, realize exhaust process, the first cavity 67A increases simultaneously, medium enters the first cavity 67A by air-intake valve plate 614, realizes intake process.Wherein, in the process that main shaft 61 whenever turns around, piston 64 is finished secondary suction, compression, exhaust process; Compressor is under the situation that external dimension are fixed, and discharge capacity increases substantially than original compressor.

According to an embodiment of the present utility model, the diameter of piston plate 52 is φ 31～33mm, and piston rod 51 diameters are φ 9～11mm.

According to an embodiment of the present utility model, the diameter of piston plate 52 is φ 32mm.

According to an embodiment of the present utility model, the diameter of piston rod 51 is φ 10mm.

Though the technological scheme of this real model utility is illustrated in conjunction with preferred embodiment; but it should be appreciated by those skilled in the art; various modifications or change for the above embodiments are predictable; this should not be regarded as having exceeded protection domain of the present utility model; therefore; protection domain of the present utility model is not limited to above-mentioned specifically described embodiment, and should be the most wide in range scope that meets the inventive features that discloses in this place.

Claims

1. the piston of a ramp type piston compressor, comprise by riveted joint or screw fastener and connect piston rod (51) and piston plate (52), piston rod (51) head is installed two crawler shoes (63), piston plate (52) has first working surface (64A) and second working surface (64B), main shaft (61) rotation drives swash plate (62) and rotates, by crawler shoe (63) effect, piston (64) is done reciprocating linear motion; It is characterized in that first working surface (64A) constitutes first active chamber (67A) with cylinder block (66) and valve plate (68), second working surface (64B) constitutes second active chamber (67B) with cylinder block (66) and clamping plate (65); Wherein when piston moved to right, the interior working medium of first active chamber (67A) was compressed, exhaust, and second active chamber (67B) working medium enters simultaneously, realized breathing process; When piston moved to left, the interior working medium of second active chamber (67B) was compressed, exhaust, and first active chamber (67A) working medium enters simultaneously, realized breathing process.

2. compressor piston as claimed in claim 1 is characterized in that: the diameter of piston plate (52) is φ 31～33mm, and piston rod (51) diameter is φ 9～11mm.

3. piston as claimed in claim 2 is characterized in that: the diameter of piston plate (52) is φ 32mm.

4. piston as claimed in claim 3 is characterized in that: the diameter of piston rod (51) is φ 10mm.

5. piston as claimed in claim 1 is characterized in that, described piston rod (51) is connected by riveted joint or screw fastener with piston plate (52).

6. piston as claimed in claim 1 is characterized in that, two hemisphere holes of described piston rod (51) head processing are used to install two crawler shoes (63).