CN1163383A - Valve discharging mechanism for fluid discharging device - Google Patents
Valve discharging mechanism for fluid discharging device Download PDFInfo
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- CN1163383A CN1163383A CN 96121323 CN96121323A CN1163383A CN 1163383 A CN1163383 A CN 1163383A CN 96121323 CN96121323 CN 96121323 CN 96121323 A CN96121323 A CN 96121323A CN 1163383 A CN1163383 A CN 1163383A
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Abstract
A refrigerant compressor includes a compressor housing divided by a valve plate into a first chamber and a second chamber. The valve plate includes suction conduits linking the first chamber with the suction chamber and discharge conduits linking the first chamber with the discharge chamber. A suction valve member bends to open and close the suction conduits in response to changes in discharge chamber pressure and the resulting pressure difference between the first chamber and the suction chamber. A suction valve control mechanism includes a regulator for regulating the opening and closing of the suction conduit between a maximum opening position and a minimum opening position in response to changes in discharge chamber pressure. Consquently, a starting torque shock to the compressor is reduced while maintaining high volumetric efficiency of the compressor.
Description
The present invention relates to have the device for draining fluid of admission air valve mechanism, particularly a kind of valve admission gear that is used for the Piston Refrigerant Compreessor of automotive air-conditioning system.
Piston compressor such as the oblique tray type compressor (Swash plate-type compressor) and the board-like compressor (Wobble plate-type compressor) that tilts are known in this area.The United States Patent (USP) that for example is issued to Hovarter has been described a kind of aircondition that is used for vehicle for No. 4976284, its use have a plurality of cylinders and reciprocating piston, the piston compressor of intake and exhaust valve mechanism.Intake and exhaust valve mechanism has the valve plate of the suction of limiting, exhaust outlet and limits the valve block of elastic spring valve wherein.The two ends of cylinder block are sealed by front and rear covers by valve plate, like this, and at the inner suction air chamber that forms of each lid.
Induction chamber forms fluid passage by inlet valve mechanism and compression chamber, and inlet valve mechanism has the air entry that processes and is arranged in the inlet valve of valve plate inboard on valve plate.Exhaust chamber forms fluid passage by exhaust valve mechanism and compression chamber.Exhaust valve mechanism is included in the exhaust outlet that processes on the valve plate and is arranged in the air bleeding valve in the valve plate outside.Covered air inlet and exhaust outlet, air inlet makes the refrigerant gas of introducing from the air conditioner loop standing part flow into inlet plenum, and exhaust outlet makes the refrigerant gas after the compression of flowing out from exhaust chamber enter air conditioner loop.In the intake stroke of the reciprocating piston of compression chamber, because the pressure reduction in compression chamber and the inlet plenum, the free end of each intake valve is flexibly crooked and towards moving away from the valve plate direction.
When the exhaust stroke end, when next intake stroke begins, because compression chamber pressure reduces and top cover induction chamber pressure is higher than the former, pressure reduction between both form, each inlet valve bends towards the enable possition.Air entry is opened, and makes the gaseous refrigerant in the induction chamber flow to compression chamber.When intake stroke end compression stroke began, each inlet valve was got back to the closed position, was under the high pressure at compressed refrigerant gas and closed air entry, and relevant air bleeding valve moves towards opening direction simultaneously, and the gases at high pressure after the compression are washed floss hole open.
In service in above-mentioned known Reciprocting piston compressor inlet valve structure, the cross-sectional area of each air entry is designed to constant, therefore when compressor start, owing to introduced more refrigerant gas to compression chamber, the power of required these refrigerant gas of compression is bigger, initial distortion therefore may occur and impact.
For addressing this problem, the cross-sectional area of each suction inlet can be designed to obviously reduce.Yet, during compressor operating,, reduced the discharge capacity of compressor because refrigerant gas has the pressure loss by little suction inlet.Therefore, be difficult to solve simultaneously above-mentioned each problem.
The purpose of this invention is to provide the coolant compressor that a kind of automotive air-conditioning system is used, wherein when reducing compressor start distortion impact, can also make compressor keep high volumetric efficiency.
In one embodiment of the invention, coolant compressor comprises a compressor housing, and this housing for example is separated into first chamber and second chamber at least in part by the valve plate separation.Second chamber comprises an exhaust chamber and induction chamber.First chamber links to each other with second chamber by communication apparatus, and this communication apparatus comprises some air intake ducts and blast pipe.First chamber links to each other with induction chamber by some air intake ducts.First chamber links to each other with exhaust chamber by the plurality of rows tracheae.Some air-breathing valve members are according to the pressure reduction bending between first chamber and the induction chamber, to open and close the openend of a corresponding suction line.Plurality of rows air valve spare is according to the pressure reduction bending between first chamber and the exhaust chamber, to open and close the openend of a corresponding discharge duct.Compressor also comprises the air intake duct adjusting device, and this device has adjuster, regulates the area of at least one air intake duct openend according to the pressure reduction between induction chamber and the exhaust chamber.
In another embodiment of the present invention, use the inlet valve assembly in compressor to comprise induction chamber and exhaust chamber that is positioned at valve plate one side and the compression chamber that is positioned at the valve plate opposite side.This assembly also comprises and is arranged in some air intake ducts and the air intake duct adjusting device that compression chamber and induction chamber are communicated with, this adjusting device is arranged in the suction chamber, can regulate the openend area of at least one air intake duct according to the pressure reduction between induction chamber and the exhaust chamber.
By the reference accompanying drawing most preferred embodiment is described in detail and learns other purpose of the present invention, characteristic and advantage.
Fig. 1 is vertical sectional drawing of Wobble plate type refrigerant agent compressor of the present invention;
Fig. 2 is the cross section enlarged drawing of the inlet valve assembly of one embodiment of the invention;
Fig. 3 has described the cover plate of inlet valve assembly of the present invention;
Fig. 4 is a sectional drawing of taking from 4-4 line among Fig. 1, first embodiment that it shows the inlet valve assembly when carrying out a kind of operating mode;
Fig. 5 is a sectional drawing of taking from 4-4 line among Fig. 1, and it has shown second embodiment when the inlet valve assembly carries out another kind of operating mode;
Fig. 1 has described according to fluid discharging apparatus of the present invention, particularly oblique tray type compressor according to an embodiment of the invention.
Compressor 10 comprises cylindrical shell assembly 120, and this assembly comprises cylinder block 121, at the front end-plate 123 of cylinder block 121 1 ends with at the end plate 124 of cylinder block 121 other ends.Form crank chamber 122 between cylinder block 121 and front end-plate 123, front end-plate 123 is fixed on the front end (Fig. 1 left side) of cylinder block 121 by some bolt (not shown)s.End plate 124 is fixed on the rear end (right side of Fig. 1) of cylinder block 121 by some bolts 102.Valve plate 125 is between end plate 124 and cylinder block 121.There is an opening 231 at the center of front end-plate 123, and this opening is used for making first driving shaft bearing, 130 supporting driving shafts 126 that are arranged in the opening 231.The inner end portion of driving shaft 126 is rotatably supported by second driving shaft bearing 131 that is arranged in cylinder block 121 centre bores 210.Extend towards the end face of cylinder block 121 backward in hole 210, and valve control device 119 is housed in the cylinder block.
Cam follower 140 links to each other with driving shaft 126 by pin spare 261 and rotates with driving shaft 126.Thrust pin type bearing 132 is installed between order neighbour's the axial end of the inner face of front end-plate 123 and cam follower 140.Cam follower 140 has pivoted arm 141, and pin spare 142 stretches out from it.Swash plate 150 is near cam follower 140 and have an opening 153 that driving shaft 126 is passed.Swash plate 150 comprises that one has the arm 151 in hole 152.Cam follower 140 is connected by passing the hole hinged pin spare 142 of 152 generations with swash plate 150.Pin spare 142 can slide in hole 152, so that swash plate 150 carries out the angle position adjustment with respect to the y direction of driving shaft 126.
Swash plate 160 is installed on the swash plate 150 by bearing 161 and 162, and it can do elevating movement.Fork-shaped sliding part 163 is fixed on the outer circumference end of swash plate 160 and is slidably mounted on the slide rail 164, and slide rail is fixed between front end-plate 123 and the cylinder block 121.Fork-shaped sliding part 163 stops swash plate 160 to rotate.When cam follower 140 rotated with driving shaft 126, swash plate 160 was along guide rail 164 elevating movements.Cylinder block 121 comprises some along its cylinder of circumferentially installing 170, and some corresponding piston 171 lay respectively in the corresponding cylinder reciprocating.Each piston 171 links to each other with swash plate 160 by connecting rod 172.
End plate 124 has one and is positioned at the induction chamber 241 at center and is positioned at annular row air chamber 251 on every side.Valve plate 125 has some valve suction lines 242 that induction chamber 241 is communicated with separately cylinder 170.Valve plate 125 also has some exhaust tubes 252 that exhaust chamber 251 is communicated with separately cylinder 170.
Plate-like adjust screw element 133 be arranged in the middle part in hole 210, between bearing 131 and valve control device 119.Plate-like is adjusted screw element 133 and is screwed in the hole 210, contacts by the inner face of packing ring 134 with driving shaft 126, by tightening and loosen the axial location of screw element 133 adjustment driving shafts 126.
Connecting rod 172 has first and second bulb 173a and the 173b, and they lay respectively at the front and back end of bar 172.Piston 171 links to each other with the second bulb 173b.With reference to Fig. 2, second pad 128 comprises and is positioned at air bleeding valve 181, that can open and close blast pipe 252 herein and is positioned at the valve keeper 180 that is used for limiting air bleeding valve 181 motions herein.Refer again to Fig. 2, first pad 127 also comprises the inlet valve 191 that is positioned at herein, can opens and closes air intake duct 242.At the side face of each cylinder 170 of cylinder block 121 rear ends groove 190 in order to the opening movement of placing restrictions on inlet valve 191 is arranged.
With reference to figure 2, inlet valve mechanism 30 comprises cover plate 43 and gripper shoe 44, and cover plate is made by steel or plastic resin or analog, and with first contacts side surfaces of valve plate 125, gripper shoe is pressed from both sides cover plate 43 to valve plate 125 slidably.Cover plate 43 and gripper shoe 44 have opening 43a and the 44a that is positioned at their central parts respectively, and cover plate and gripper shoe are fixed together by jockey such as nut 80, thereby have limited the axially-movable of cover plate 43 and gripper shoe 44.Screw thread cylindrical member 194 is inserted among the opening 43a and 44a of cover plate 43 and gripper shoe 44.
In addition, with reference to Fig. 3, cover plate 43 have the core 43b that is positioned at the center and with the corresponding some ridge portion 43c of the number of air entry 242.Some ridge portion 43c from the periphery of circular core 43b equidistantly to be radial extension.Cover plate 43 is included in its first end face at least in part around the notch portion 46 of opening 43a.Gripper shoe 44 comprises the cavity 44b that is arranged in notch portion 46 and has opening.Ring spring 45 has the first end 45a that radially extends, and this spring is disposed in the notch portion 46, and first end 45a is inserted among the cavity 44b of gripper shoe 44 like this, and the other end 45b contacts with the limit wall 46a of notch portion 46.
With reference to Fig. 4, cover plate 43 also has the pin portion 37 of extending from its second end face axial.One piston mechanism 35 is arranged in the end plate 124.Piston mechanism 35 comprises the cylinder 39 vertical substantially with driving shaft 126, is placed on piston 38 and the bar 36 that extends and be connected with pin portion 37 to induction chamber 241 from piston 38 in the cylinder 39.Piston 38 preferably can move back and forth in cylinder 39.First end of cylinder 39 is closed by cock 40.Helical spring 41 is arranged between second end and piston 38 of cylinder 39, with piston 38 bullets to cock 40.Cylinder 39 and exhaust chamber form fluid passages by the passage 42 that is formed between on the end plate 124 they.
During operation, driving shaft 126 is driven by electric clutch 300 by vehicle motor and rotates.Cam follower 140 rotates with driving shaft 126, and swash plate 150 is rotated, and does elevating movement thereby drive swash plate 160.The elevating movement of swash plate 160 moves back and forth piston 171 in cylinder 170 separately.Along with the reciprocating motion of piston 171, refrigerant gas is introduced into induction chamber 241 by import 241a, and refrigerant gas enters cylinder 170 by inlet valve mechanism 30 then, is compressed at this.Refrigerant gas after the compression is arranged to exhaust chamber 251 from each cylinder 170 by blast pipe 252, flows to the cooling circuit (not shown) at this by outlet 251a.
The operation of inlet valve mechanism 30 below will be described in detail in detail.
When compressor 10 began to start, the pressure reduction between exhaust chamber 251 and the induction chamber 241 was very little, and as shown in Figure 4, because the restoring force of spring 41 can overcome the pressure in the cylinder 39, so an end of piston 38 contacts with cock 40.The restoring force of ring spring 45 can make cover plate 43 rotate in the counterclockwise direction, therefore cover plate 43 is in as shown in Figure 4 position, several projections thing 43c covers the end of opening of air entry 242 respectively like this, keeps a predetermined little aperture, for example opens the 10%-30% of air entry 242 towards induction chamber 241.In another embodiment, cover plate 43 is designed to all cover the openend of suction inlet 242.
When compressor 10 changed normal operation over to, because the pressure in the exhaust chamber 251 increases, the pressure in the cylinder 39 increased.Therefore, difference appears in pressure in the cylinder 39 and the pressure in the suction chamber 241.Like this, the restoring force that piston 38 overcomes spring 41 moves towards suction chamber 241 directions, as shown in Figure 5.The end 36a of piston rod 36 puts in induction chamber 241 and is connected with pin portion 37 from cylinder 39, makes cover plate 43 overcome the restoring force anglec of rotation θ of ring spring 45.Each thrust 43c does not cover the openend of suction inlet 242 like this.The area of suction inlet 242 openends increases towards predetermined maximum opening, for example standard-sized sheet or do not cover.
Therefore, the beginning area of air entry 242 is opened mouth or is closed, and the adjusting of its degree is finished by following action: the cross-sectional area that changes cylinder 39; Or coefficient of elasticity or the two full change of change spring 41 or 45; Change the length of piston rod 36; Or the position of change piston rod 36.
As described above with reference to Figure 1, when compressor start, the pressure of exhaust chamber 251 is lower, and at this moment as shown in Figure 4, thrust 43c only is covered with the openend of air entry 242 with a predetermined little aperture.Lower amount of refrigerant gas is introduced into cylinder 170 by suction lead 242.Therefore, the work done during compression that compressor 10 is done when starting is not too big, and refrigerant gas drains into exhaust chamber 251 from cylinder 170 gradually.Having reduced the distortion of compressor when starting like this impacts.
At compressor 10 normal operation periods, the openend of air entry 242 can all be opened to suction chamber 241.Refrigerant gas has reduced in the flow resistance of suction inlet 242 like this, and more refrigerant gas can be introduced in the cylinder 170 by suction inlet 242.Therefore compressor can obtain high design volumetric efficiency.
Therefore, present embodiment has been kept the high volumetric efficiency of compressor when reducing compressor start distortion impact.
Although the present invention combines most preferred embodiment and is described in detail, the present invention is not limited thereto.Obviously, those of ordinary skills in scope of the present invention defined by the following claims, can make multiple conversion and modification.
Claims (12)
1, a kind of coolant compressor comprises:
Be separated into the compressor housing in first chamber and second chamber by valve plate, described second chamber comprises exhaust chamber and induction chamber;
The communication apparatus that is communicated with described first chamber and described second chamber, described communication apparatus comprise makes described first chamber plurality of rows tracheae that is communicated with described exhaust chamber and some air intake ducts that described first chamber is communicated with described induction chamber;
Some air-breathing valve members, according to the pressure reduction between described first chamber and the described induction chamber, each valve member can open and close a corresponding air intake duct;
Plurality of rows air valve spare, according to the pressure reduction between described first chamber and the described exhaust chamber, each exhaust valve member can open and close a corresponding described blast pipe; With
Air intake duct adjusting device, this device are arranged in the described induction chamber, according to the pressure reduction between described induction chamber and the described exhaust chamber, regulate the openend area of at least one described air intake duct.
2, coolant compressor as claimed in claim 1, wherein said adjusting device is opened air intake duct to minimum aperture according to the reducing of described pressure reduction between described induction chamber and the described exhaust chamber according to the increase of the described pressure reduction between described induction chamber and the described exhaust chamber and suction line is opened to maximum opening.
3, coolant compressor as claimed in claim 2, wherein said adjusting device comprises the covering and the piston mechanism of the described openend that is used to close and open described air intake duct, and this piston mechanism comprises a piston rod that is connected and makes according to the pressure reduction between described induction chamber and the described exhaust chamber described covering motion with described covering.
4, coolant compressor as claimed in claim 3, wherein said covering are plates, and it can rotate around the longitudinal axis of described compressor.
5, coolant compressor as claimed in claim 4, wherein said plate comprise the first that limits circumferential rounded and are some second portions that radial extension is used to cover each corresponding suction line from described first periphery.
6, coolant compressor as claimed in claim 4, it also comprises makes the spring of described plate towards minimum aperture position.
7, a kind of inlet valve assembly that is used for compressor, this compressor has induction chamber and exhaust chamber in a side of valve plate, has compression chamber at the opposite side of valve plate, and described assembly comprises:
Some air intake ducts on valve plate, that be used to make described discharge chambe and the connection of described induction chamber; With
Air intake duct adjusting device, this device are arranged in the described induction chamber, regulate the openend area of at least one described air intake duct according to the pressure reduction between described induction chamber and the described exhaust chamber.
8, inlet valve assembly as claimed in claim 7, wherein said adjusting device increases according to the described pressure reduction between described induction chamber and the described exhaust chamber and air intake duct is opened to maximum opening, reduces and air intake duct is opened to minimum aperture according to the described pressure reduction between described induction chamber and the described exhaust chamber.
9, inlet valve assembly as claimed in claim 8, wherein said adjusting device comprises covering and the piston mechanism that is used to close and open described air intake duct openend, and this piston mechanism comprises a piston rod that is connected and makes according to the pressure reduction between described induction chamber and the described exhaust chamber described covering motion with described covering.
10, inlet valve assembly as claimed in claim 9, wherein said covering is a plate, it can rotate around the longitudinal axis of described compressor.
11, inlet valve assembly as claimed in claim 10, wherein said plate comprise first that limits circumferential rounded and the some second portions that are used to cover each corresponding suction line from described first to the radial extension of periphery.
12, inlet valve assembly as claimed in claim 10, it also comprises makes the spring of described plate towards minimum aperture position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96121323 CN1163383A (en) | 1995-12-13 | 1996-12-13 | Valve discharging mechanism for fluid discharging device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346651/95 | 1995-12-13 | ||
| CN 96121323 CN1163383A (en) | 1995-12-13 | 1996-12-13 | Valve discharging mechanism for fluid discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1163383A true CN1163383A (en) | 1997-10-29 |
Family
ID=5126856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96121323 Pending CN1163383A (en) | 1995-12-13 | 1996-12-13 | Valve discharging mechanism for fluid discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163383A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364099A (en) * | 2011-11-01 | 2012-02-29 | 无锡市苏立成汽车空调压缩机有限公司 | Main shaft inclined plate structure for automobile air-condition compressor |
| CN105240243A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Compressor and air conditioning device |
| CN105378394A (en) * | 2013-04-11 | 2016-03-02 | 富拉思口德股份公司 | Compressor for a refrigerating plant and refrigerating plant comprising said compressor |
-
1996
- 1996-12-13 CN CN 96121323 patent/CN1163383A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364099A (en) * | 2011-11-01 | 2012-02-29 | 无锡市苏立成汽车空调压缩机有限公司 | Main shaft inclined plate structure for automobile air-condition compressor |
| CN105378394A (en) * | 2013-04-11 | 2016-03-02 | 富拉思口德股份公司 | Compressor for a refrigerating plant and refrigerating plant comprising said compressor |
| CN105378394B (en) * | 2013-04-11 | 2018-04-20 | 富拉思口德股份公司 | The compressor of refrigeration plant and the refrigeration plant for including the compressor |
| CN105240243A (en) * | 2015-10-15 | 2016-01-13 | 珠海格力电器股份有限公司 | Compressor and air conditioning device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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