CN206419209U - A kind of exhaust governor motion of screw type refrigerating compressor - Google Patents
A kind of exhaust governor motion of screw type refrigerating compressor Download PDFInfo
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- CN206419209U CN206419209U CN201720026268.1U CN201720026268U CN206419209U CN 206419209 U CN206419209 U CN 206419209U CN 201720026268 U CN201720026268 U CN 201720026268U CN 206419209 U CN206419209 U CN 206419209U
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- pass port
- valve block
- compressor
- screw mandrel
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Abstract
A kind of exhaust governor motion of screw type refrigerating compressor, the screw channel of screw rotor is defined by inner walls and two star-wheels forms two airtight cavities；Each airtight cavity of housing correspondence offers by-pass port；By-pass port is connected with compressor outside atmosphere, and correspondence by-pass port can adjust its exhaust governor motion for opening size, including two groups of sliding valve structures provided with one, and each sliding valve structure includes screw mandrel and valve block；Two screw mandrels are respectively parallel to rotating shaft both sides, the by-pass port of valve block correspondence screw rotor side；Screw mandrel, which is rotated, to be arranged in compression side body；When screw mandrel rotates, valve block does anterior-posterior translation on leading screw, and by-pass port is played a part of closing and opened.Compared to existing technologies, the utility model optimizes the design of slide-valve gear, the design of screw rod transmission causes the displacement of valve block more precisely, reliably, so that ensure that by-pass port opens being precisely controlled for size, and service life is far above conventional cylinder driving or the mode of hydraulic oil cylinder driving.
Description
Technical field
The utility model is related to screw type refrigerating compressor, and in particular to a kind of exhaust regulation of screw type refrigerating compressor
Mechanism, the exhaust governor motion is used for the capacity for adjusting compressor.
Background technology
With the continuous renewal of single screw rod type refrigerating compressor technology, single-screw compressor air-conditioning, refrigeration, freeze with
And the field such as chemical industry is widely used.The operation principle of single screw rod type refrigerating compressor is turned by electric motor driven screw
Son is rotated, and by screw rotor and the cooperation compression refrigerant steam of star-wheel, makes the boost in pressure of refrigerant vapour, and then pass through
In the exhaust outlet feeding condenser of compressor.The refrigeration of refrigeration compressor and the capacity of exhaust outlet are directly proportional, and work as exhaust
When amount is higher, refrigeration is stronger.
The existing single screw rod type refrigerating compressor finds to there are following deficiency after prolonged：
For refrigeration in regulation room, it is necessary to adjust the capacity of compressor.Existing single screw rod type refrigerating compressor
Adjusted by a guiding valve, but the design of slide-valve gear is still defective, traditional its type of drive of guiding valve is typically to use cylinder
, there is the unstable and slide displacement degree of accuracy of guiding valve slip after prolonged low in driving or the mode of hydraulic oil cylinder driving
Problem, and the life-span is shorter.
Therefore, how to solve the problem of above-mentioned prior art is present and become the class to be researched and solved of the utility model
Topic.
The content of the invention
The purpose of this utility model is to provide a kind of exhaust governor motion of screw type refrigerating compressor.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of exhaust governor motion of screw type refrigerating compressor, the compressor includes a casing, and the casing includes water
Motor side and compressed side that plain cloth is put；The motor side is used for the motor for assembling refrigeration compressor；The compressed side is used to fill
Screw rotor and star-wheel with refrigeration compressor；The screw rotor is fitted with compressing the inwall of side body, is constituted screw rod and is turned
The screw channel of son is defined by the inwall and two star-wheels of compression side body forms two independent airtight cavities；The compression side body pair
Each airtight cavity is answered to be further opened with a by-pass port；The by-pass port connects setting with the atmosphere outside of compressor, and right
Should by-pass port be additionally provided with one can adjust its open size exhaust governor motion；
The exhaust governor motion includes two groups of sliding valve structures, and each sliding valve structure is by horizontally disposed a screw mandrel and screw thread
The valve block being connected on the screw mandrel is constituted；Screw mandrel described in two is set in parallel in the both sides of the screw rotor rotating shaft respectively, described
The by-pass port of valve block correspondence screw rotor side；The screw mandrel is driven by a motor, and the pressure is arranged at so as to rotate
In contracting side body；Length direction of each valve block along the rotating shaft is slidingly positioned in the inwall of compression side body, is constituted and is worked as
When screw mandrel rotates, the valve block is coordinated by screw thread does anterior-posterior translation on the leading screw, and then plays pass to the by-pass port
The effect closed and opened.
Relevant content in above-mentioned technical proposal is explained as follows：
1. in such scheme, when by-pass port is closed, the airtight cavity of screw rotor is completely enclosed, now compressor
Capacity is maximum, and refrigeration is most strong；, can not be by regulation due to determining frequency motor when needing to reduce the refrigeration of compressor
The mode of motor speed reduces the capacity of screw rotor in itself, it is therefore desirable to open by-pass port, by the close of screw rotor
Some vapor in closed chamber body is let out into compressor outside atmosphere via by-pass port so that the capacity of compressor declines, to drop
Low refrigeration.By-pass port is opened how many depending on actual refrigeration demand.
2. in such scheme, the design of screw rod transmission causes the displacement of valve block more accurate, reliable, so as to ensure that bypass
Mouth opens being precisely controlled for size.And screw mandrel and the design of valve block its service life are also far above conventional cylinder driving or oil
The mode of cylinder driving.
Utility model works principle and advantage are as follows：
A kind of exhaust governor motion of screw type refrigerating compressor of the utility model, the screw channel of screw rotor is by inner walls
And two star-wheel define to form two airtight cavities；Each airtight cavity of housing correspondence offers by-pass port；Outside by-pass port and compressor
Atmosphere, and correspondence by-pass port can adjust its exhaust governor motion for opening size, including two groups of sliding valve structures provided with one, respectively
Sliding valve structure includes screw mandrel and valve block；Two screw mandrels are respectively parallel to rotating shaft both sides, the by-pass port of valve block correspondence screw rotor side；
Screw mandrel, which is rotated, to be arranged in compression side body；When screw mandrel rotates, valve block does anterior-posterior translation on leading screw, and pass is played to by-pass port
The effect closed and opened.Compared to existing technologies, the utility model optimizes the design of slide-valve gear, the design of screw rod transmission
So that the displacement of valve block is more precisely, reliably, so that ensure that by-pass port opens being precisely controlled for size, and service life is far high
In conventional cylinder driving or the mode of hydraulic oil cylinder driving.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment compressor；
Accompanying drawing 2 is structural representations of the Fig. 1 under 1/4 section view；
Accompanying drawing 3 is structural representations of the Fig. 1 under 1/2 section view；
Accompanying drawing 4 is the principle schematic of the utility model embodiment compressor（Overlook visual angle）；
Accompanying drawing 5 is the structural representation of the utility model embodiment sliding valve structure；
Accompanying drawing 6 is structural representation when the utility model embodiment by-pass port is completely closed by valve block；
Accompanying drawing 7 is the structural representation of Fig. 6 partial cross；
Accompanying drawing 8 is the structural representation in the utility model embodiment by-pass port opening procedure；
Accompanying drawing 9 is the structural representation of Fig. 8 partial cross；
Accompanying drawing 10 is structural representation when the utility model embodiment by-pass port is opened to maximum；
Accompanying drawing 11 is the structural representation of Figure 10 partial cross.
In the figures above：1. screw rotor；2. star-wheel；3. rotating shaft；4. compress side body；5. air inlet；6. exhaust outlet；7.
Screw channel；8. by-pass port；9. screw mandrel；10. valve block.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment：Referring to shown in accompanying drawing 1~11, a kind of exhaust governor motion of screw type refrigerating compressor, compressor bag
A casing is included, the casing includes horizontally disposed motor side（Do not drawn in figure）And compressed side；The motor side, which is used to assemble, to be made
Certain frequency motor of cold compressor；The compressed side is used for the screw rotor 1 and star-wheel 2 for assembling refrigeration compressor, the star
Wheel 2 is arranged in the both sides of screw rotor 1.Air inlet 5 and exhaust outlet 6 are offered on compression side body 4.
Wherein, the screw rotor 1 with it is described compression side body 4 inwall fit, composition screw rotor 1 screw channel 7 by
The inwall and two star-wheels 2 for compressing side body 4 define to form two independent airtight cavities；Compression side body 4 correspondence is each close
Closed chamber body is further opened with a by-pass port 8；The by-pass port 8 connects setting with the atmosphere outside of compressor, and to should
By-pass port 8 is additionally provided with one and can adjust its exhaust governor motion for opening size.
The exhaust governor motion includes two groups of sliding valve structures, and each sliding valve structure is by horizontally disposed a screw mandrel 9 and spiral shell
The valve block 10 that line is connected on the screw mandrel 9 is constituted；Screw mandrel 9 is set in parallel in the both sides of screw rotor rotating shaft 3, valve respectively described in two
The by-pass port 8 of the correspondence screw rotor 1 of block 10 side；The screw mandrel 9 passes through a motor（Do not drawn in figure）Driving, so as to turn
It is dynamic to be arranged in the compression side body 4；Length direction of the valve block 10 along rotating shaft 3 is slidingly positioned in compression side body 4
In inwall, constitute when screw mandrel 9 rotates, the valve block 10 is coordinated by screw thread does anterior-posterior translation on the leading screw 9, and then right
The by-pass port 8 plays a part of closing and opened.
When by-pass port 8 is closed, the airtight cavity of screw rotor 1 is completely enclosed, and now the capacity of compressor is maximum,
Refrigeration is most strong；, can not be by regulation motor rotating speed due to determining frequency motor when needing to reduce the refrigeration of compressor
Mode reduces screw rotor 1 capacity of itself, it is therefore desirable to open by-pass port 8, by the airtight cavity of screw rotor 1
Some vapor let out via by-pass port 8 into compressor outside atmosphere so that the capacity of compressor declines, to reduce refrigeration effect
Really.By-pass port 8 is opened how many depending on actual refrigeration demand.
Two screw rotors 1 of the back-to-back setting of the present embodiment, it is each to need two groups of regulation capacities of valve block 10, and front end
The valve block 10 of screw rotor 1 and the valve block 10 of rear end screw rotor 1 are moved in the opposite direction, to complete to two screw rotors
1 increasing, off-load.Existing piston drive mechanism can not realize this motion mode and ensure that two end valve blocks 10 are in identical load
Position.Therefore devise by motor drive screw 9 and move capacity governor motion, front and back end screw rotor 1 with movable valve block 10
The valve block 10 of homonymy, is machined with the opposite externally threaded screw mandrel 9 of rotation direction using same two ends and drives, and the valve block 10 at two ends is set
There is internal thread with matching, the rotation of screw mandrel 9 is converted into the linear motion of valve block 10 by screw-driven, when screw mandrel 9
When being rotated to a direction, by the oppositely oriented thread in the two ends of screw mandrel 9, drive movable valve block 10 and move along a straight line in the opposite direction, it is real
Off-load or increment of load while now to two ends screw rotor 1.So, by being arranged on two silks of the both sides of front and back end screw rotor 1
Bar 9 is rotated simultaneously, and the front and rear end valve block 10 of both sides can be driven to move to the position of identical load.The screw rod of back-to-back setting turns
Son 1, two ends are in same pressure, and axially loaded complete equipilibrium, bearing load is small, long lifespan；Compressor operation is more steady, makes an uproar
Sound, vibration are low.
A kind of exhaust governor motion of screw type refrigerating compressor of the utility model, the screw channel of screw rotor is by inner walls
And two star-wheel define to form two airtight cavities；Each airtight cavity of housing correspondence offers by-pass port；Outside by-pass port and compressor
Atmosphere, and correspondence by-pass port can adjust its exhaust governor motion for opening size, including two groups of sliding valve structures provided with one, respectively
Sliding valve structure includes screw mandrel and valve block；Two screw mandrels are respectively parallel to rotating shaft both sides, the by-pass port of valve block correspondence screw rotor side；
Screw mandrel, which is rotated, to be arranged in compression side body；When screw mandrel rotates, valve block does anterior-posterior translation on leading screw, and pass is played to by-pass port
The effect closed and opened.Compared to existing technologies, the utility model optimizes the design of slide-valve gear, the design of screw rod transmission
So that the displacement of valve block is more precisely, reliably, so that ensure that by-pass port opens being precisely controlled for size, and service life is far high
In conventional cylinder driving or the mode of hydraulic oil cylinder driving.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (1)
1. a kind of exhaust governor motion of screw type refrigerating compressor, it is characterised in that：
The compressor includes a casing, and the casing includes horizontally disposed motor side and compressed side；The motor side is used to fill
A motor with refrigeration compressor；The compressed side is used for the screw rotor and star-wheel for assembling refrigeration compressor；The screw rod
Rotor is fitted with compressing the inwall of side body, and the screw channel for constituting screw rotor is defined by the inwall and two star-wheels of compression side body
Form two independent airtight cavities；Each airtight cavity of the compression side body correspondence is further opened with a by-pass port；The by-pass port
Connect setting with the atmosphere outside of compressor, and to should by-pass port be additionally provided with one and can adjust its exhaust for opening size
Governor motion；
The exhaust governor motion includes two groups of sliding valve structures, and each sliding valve structure is by a horizontally disposed screw mandrel and threaded connection
Constituted in the valve block on the screw mandrel；Screw mandrel described in two is set in parallel in the both sides of the screw rotor rotating shaft, the valve block respectively
The by-pass port of correspondence screw rotor side；The screw mandrel is driven by a motor, and the compressed side is arranged at so as to rotate
In housing；Length direction of each valve block along the rotating shaft is slidingly positioned in the inwall of compression side body, and composition works as screw mandrel
During rotation, the valve block is coordinated by screw thread does anterior-posterior translation on the screw mandrel, so the by-pass port is played closing and
The effect of opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026268.1U CN206419209U (en) | 2017-01-10 | 2017-01-10 | A kind of exhaust governor motion of screw type refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026268.1U CN206419209U (en) | 2017-01-10 | 2017-01-10 | A kind of exhaust governor motion of screw type refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419209U true CN206419209U (en) | 2017-08-18 |
Family
ID=59573825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720026268.1U Active CN206419209U (en) | 2017-01-10 | 2017-01-10 | A kind of exhaust governor motion of screw type refrigerating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206419209U (en) |
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2017
- 2017-01-10 CN CN201720026268.1U patent/CN206419209U/en active Active
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