CN108980014A - Cylinder holder assembly, piston compressor and the refrigeration system of piston compressor - Google Patents
Cylinder holder assembly, piston compressor and the refrigeration system of piston compressor Download PDFInfo
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- CN108980014A CN108980014A CN201811068778.0A CN201811068778A CN108980014A CN 108980014 A CN108980014 A CN 108980014A CN 201811068778 A CN201811068778 A CN 201811068778A CN 108980014 A CN108980014 A CN 108980014A
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- compression chamber
- piston compressor
- sliding block
- operating mode
- exhaust passage
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 30
- 238000007906 compression Methods 0.000 claims abstract description 101
- 230000006835 compression Effects 0.000 claims abstract description 100
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims description 17
- 230000030279 gene silencing Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000003434 inspiratory effect Effects 0.000 description 17
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The present invention provides cylinder holder assembly, piston compressor and the refrigeration systems of a kind of piston compressor.Cylinder holder assembly includes: cylinder block, and cylinder block is equipped with compression chamber and exhaust passage；Transfiguration switching mechanism is arranged in cylinder block, and transfiguration switching mechanism can make exhaust passage be connected to or disconnect with compression chamber.Apply the technical scheme of the present invention, can solve single cylinder piston compressor in the prior art can not transfiguration the problem of.
Description
Technical field
The present invention relates to Compressor Technology fields, in particular to a kind of cylinder holder assembly of piston compressor, work
Plug compressor and refrigeration system.
Background technique
In the prior art, freezer compressor is divided into invariable frequency compressor and frequency-changeable compressor, invariable frequency compressor operation by revolving speed
Fixed rotating speed, usually 50HZ.The design of freezer compressor is often directed to a fixed operating condition, and the capacity of its operation (holds
Product refrigerating capacity) it is also fixation, no image of Buddha frequency-changeable compressor lowers restraining cooling capacity and power in different operating conditions like that, meets different
The best match demand of operating condition, therefore when being matched with refrigerator, it may appear that each compartment cooling rate is slow under high circumstance temperature, compartment
The problems such as non-uniform temperature.
With the implementation of refrigerator new national standard, the evaluation index of refrigerator power consumption is by the power consumption set of weights under two kinds of operating conditions
At for invariable frequency compressor, power consumption demand under two kinds of operating conditions will not only be met by fixing refrigerating capacity, while there are also cool down
The bad working environments such as test.Therefore refrigerator needs to configure the compressor that can satisfy peak load refrigerating capacity, and meets big system
The compressor of cooling capacity will cause the waste of compacting cooling capacity under refrigerator small load condition, and refrigerator startup-shutdown number increases, compressor
It is big to run power, is unfavorable for power consumption optimization.
Summary of the invention
The main purpose of the present invention is to provide cylinder holder assembly, piston compressor and the systems of a kind of piston compressor
Cooling system, to solve the problems, such as that single cylinder piston compressor in the prior art can not transfiguration.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of cylinder block of piston compressor
Component, comprising: cylinder block, cylinder block are equipped with compression chamber and exhaust passage；Transfiguration switching mechanism is arranged in cylinder block, becomes
Holding switching mechanism can make exhaust passage be connected to or disconnect with compression chamber.
Further, transfiguration switching mechanism includes: by-pass prot, is arranged on the inner wall of compression chamber；Switching construction, with bypass
Hole connection, switching construction have be connected to by-pass prot with compression chamber first state and make by-pass prot and compression chamber disconnection second
State；When switching construction is in first state, exhaust passage is connected to by-pass prot, when switching construction is in the second state,
Exhaust passage and by-pass prot disconnect.
Further, switching construction includes: slideway, is arranged in cylinder block, and slideway and compression chamber interval are arranged；Sliding block group
Part is movably disposed so that compression chamber is connected to or disconnects with by-pass prot in slideway.
Further, slide block assembly includes: sliding block；Elastic element is connect with sliding block, in the pressure at expulsion and bullet of compression chamber
Under the collective effect of property element, sliding block is movably disposed in slideway.
Further, sliding block at least has evacuation position and stop dog position, when sliding block is in evacuation position, by-pass prot with
Exhaust passage is connected to compression chamber；When sliding block is in stop dog position, by-pass prot and compression chamber are disconnected.
Further, elastic element is spring, and one end of spring is connect with sliding block, and the other end of spring is connected to slideway
On bottom wall.
Further, slideway is the blind hole being provided in cylinder block.
Further, cylinder holder assembly further includes the exhaust noise silencing chamber being connected to exhaust passage.
According to another aspect of the present invention, a kind of piston compressor is provided, piston compressor includes as above-mentioned
Cylinder holder assembly and the piston component being arranged in the compression chamber of cylinder holder assembly.
Further, there is piston compressor the first operating mode and the second operating mode, piston compressor to pass through
Transfiguration switching mechanism switches between the first operating mode and the second operating mode.
Further, when piston compressor is in the first operating mode, exhaust passage is connected to compression chamber；Work as piston
When formula compressor is in the second operating mode, exhaust passage and compression chamber are disconnected.
Further, the sliding block of transfiguration switching mechanism at least has evacuation position and stop dog position, when sliding block is in evacuation
When position, piston compressor is in the first operating mode；When sliding block is in stop dog position, piston compressor is in second
Operating mode；When sliding block switches to stop dog position from evacuation position, piston compressor switches to the from the first operating mode
Two operating modes；When sliding block switches to evacuation position from stop dog position, piston compressor is switched to from the second operating mode
First operating mode.
According to another aspect of the present invention, a kind of refrigeration system is provided, refrigeration system includes such as above-mentioned piston type pressure
Contracting machine.
It applies the technical scheme of the present invention, due to being provided with transfiguration switching mechanism, so as to switch exhaust passage and pressure
The connection or disconnection of contracting chamber, and then adjust the inspiratory capacity of compression chamber.Specifically, it when exhaust passage is connected to compression chamber, has
Gas enters compression chamber through exhaust passage, to form a part of invalid inspiratory capacity, reduces pressure at expulsion, can satisfy small negative
Refrigeration capacity requirement under lotus operating condition；When exhaust passage and compression chamber disconnect, the gas for sucking compression chamber is effective inspiratory capacity,
Pressure at expulsion is big, can satisfy the refrigeration capacity requirement under operating condition at full capacity.Therefore, it by the way that transfiguration switching mechanism is arranged, realizes
The varying capacity of single cylinder piston compressor is adjusted, and so that compressor is adapted to the refrigeration capacity requirement under different operating conditions, is improved pressure
Contracting function effect.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic perspective view of the embodiment of cylinder holder assembly according to the present invention；
Fig. 2 shows the A-A direction views of the cylinder holder assembly of Fig. 1；
Fig. 3 shows the B-B direction view of the cylinder holder assembly of Fig. 1；
Fig. 4 shows the C-C direction view of the cylinder holder assembly of Fig. 1；
Fig. 5 shows the structural schematic diagram of the slide block assembly of the cylinder holder assembly of Fig. 3；
Fig. 6 shows kinematic sketch of the cylinder holder assembly of Fig. 1 under small load condition (environment temperature is 16 DEG C at this time)；
Fig. 7 shows kinematic sketch of the cylinder holder assembly of Fig. 1 under high load working condition (environment temperature is 32 DEG C at this time)；
And
Fig. 8 shows the stress of the spring in the slide block assembly of Fig. 5 and the relation schematic diagram of deformation quantity.
Wherein, the above drawings include the following reference numerals:
10, cylinder block；11, compression chamber；12, exhaust passage；13, by-pass prot；14, slideway；20, slide block assembly；21, sliding
Block；22, elastic element；30, exhaust noise silencing chamber；40, piston；50, crankshaft；60, connecting rod.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figures 1 to 4, the embodiment provides a kind of cylinder holder assemblies of piston compressor.The reality
The cylinder holder assembly for applying example includes cylinder block 10 and transfiguration switching mechanism.Cylinder block 10 is equipped with compression chamber 11 and exhaust passage
12；Transfiguration switching mechanism be arranged in cylinder block 10, transfiguration switching mechanism can make exhaust passage 12 be connected to compression chamber 11 or
It disconnects.
In this application, due to being provided with transfiguration switching mechanism, so as to switch exhaust passage 12 and compression chamber 11
Connection disconnects, and then adjusts the inspiratory capacity of compression chamber 11.Specifically, it when exhaust passage 12 is connected to compression chamber 11, has
Gas enters compression chamber 11 through exhaust passage 12 and reduces pressure at expulsion to form a part of invalid inspiratory capacity, can satisfy
Refrigeration capacity requirement under small load condition；When exhaust passage 12 and compression chamber 11 disconnect, the gas of sucking compression chamber 11 is
Effective inspiratory capacity, pressure at expulsion is big, can satisfy the refrigeration capacity requirement under operating condition at full capacity.Therefore, switched by setting transfiguration
Mechanism, the varying capacity for realizing single cylinder piston compressor are adjusted, and the refrigerating capacity for being adapted to compressor under different operating conditions needs
It asks, improves compressor efficiency.
Specifically, the invalid inspiratory capacity of the present embodiment refers to: since the cold media gas density of exhaust is close greater than suction gas
Degree, so the air-breathing density of entire breathing process is to increase, but in compression process, the leakage rate of refrigerant is greater than because of gas
The incrementss of cold medium flux caused by density increase.Therefore, in the exhaust passage of small load condition 12 and 11 connected state of compression chamber
Under state, the actual displacement of cylinder is less than discharge capacity at full capacity, only realizes the operation of sub-load.
As shown in Figures 2 to 4, in the embodiment of the present invention, transfiguration switching mechanism includes by-pass prot 13 and switching construction.It is other
Through-hole 13 is arranged on the inner wall of compression chamber 11；Switching construction is connect with by-pass prot 13, switching construction have make by-pass prot 13 with
The first state that compression chamber 11 is connected to and the second state for disconnecting by-pass prot 13 and compression chamber 11；When switching construction is in first
When state, exhaust passage 12 is connected to by-pass prot 13, when switching construction is in the second state, exhaust passage 12 and by-pass prot 13
It disconnects.
Specifically, by-pass prot 13 is radially extended by the inner wall of compression chamber 11, and by-pass prot 13 and switching construction and exhaust
Channel 12 is all connected with, and exhaust passage 12 is connected to by by-pass prot 13 with compression chamber 11.Switching construction can change by-pass prot 13 with
The connected state of compression chamber 11, and then change the connected state of exhaust passage 12 and compression chamber 11.Therefore, by above-mentioned setting,
When exhaust passage 12 is connected to compression chamber 11, the refrigeration capacity requirement under small load condition can satisfy；When exhaust passage 12 with
When compression chamber 11 disconnects, it can satisfy the refrigeration capacity requirement under operating condition at full capacity, realize the transfiguration of single cylinder piston compressor
Amount is adjusted, and so that compressor is adapted to the refrigeration capacity requirement under different operating conditions, is improved compressor efficiency.
As shown in Figure 3 and Figure 4, in the embodiment of the present invention, switching construction includes slideway 14 and slide block assembly 20.Slideway 14
It is arranged in cylinder block 10, slideway 14 and the interval of compression chamber 11 are arranged；Slide block assembly 20 be movably disposed in slideway 14 with
Compression chamber 11 is set to be connected to or disconnect with by-pass prot 13.
In this application, slide block assembly 20 moves in slideway 14, so that slide block assembly 20 be allow to block by-pass prot 13
Or by-pass prot 13 is opened, and then change the connected state of compression chamber 11 and exhaust passage 12, realize the varying capacity tune of compressor
Section makes compressor have different refrigerating capacitys under different operating conditions, improves compressor efficiency.
As shown in Figures 3 to 5, in the embodiment of the present invention, slide block assembly 20 includes sliding block 21 and elastic element 22.Elasticity
Element 22 is connect with sliding block 21, and under the pressure at expulsion of compression chamber 11 and the collective effect of elastic element 22, sliding block 21 is in slideway
It is movably disposed in 14.
Specifically, as shown in fig. 7, under high load capacity operating condition, the pressure at expulsion meeting compression elastic element 22 of compressor makes it
It is deformed, under the drive of elastic element 22, sliding block 21 blocks by-pass prot 13, and exhaust passage 12 and compression chamber 11 disconnect, make
Compression chamber 11 forms enclosure space, so that compression chamber 11 be made to suck all effective inspiratory capacities of gas, realizes compressor at full capacity
Delivery adjust, meet refrigeration capacity requirement under high load working condition, improve compressor efficiency.As shown in fig. 6, in Smaller load
Under operating condition, the pressure at expulsion of compressor is insufficient to allow elastic element 22, and deformation occurs or the deformation quantity of elastic element 22 is insufficient
By-pass prot 13 is blocked with band movable slider, by-pass prot 13 is connected to exhaust passage 12 and compression chamber 11, makes the part in exhaust passage 12
Gas flows into compression chamber 11, and a part of invalid inspiratory capacity D, the system in the case where meeting small load condition are formed in compression chamber 11
Refrigeration requirement simultaneously, reduces the inspiratory capacity of compression chamber 11, reduces compressor efficiency.
Therefore, it by above-mentioned setting, realizes that the transfiguration of compressor is adjusted according to the pressure at expulsion size of compressor, reduces
Energy consumption, and structure is simple, only can be realized by improving the partial structurtes of compressor, cost is relatively low.
Preferably, sliding block 21 at least has evacuation position and stop dog position, when sliding block 21 is in evacuation position, by-pass prot
13 are connected to exhaust passage 12 and compression chamber 11；When sliding block 21 is in stop dog position, by-pass prot 13 and compression chamber 11 are disconnected.
The stop dog position of sliding block 21 and the switching of evacuation position are realized by the different pressures at expulsion of compressor.Work as compression
When the pressure at expulsion of machine is big, pressure at expulsion makes elastic element 22 that elastic deformation, under the drive of elastic element, 21 envelope of sliding block occur
Stifled by-pass prot 13, at this point, sliding block 21 is located at stop dog position, by-pass prot 13 and compression chamber 11 are disconnected, and then make compression chamber 11 and row
Gas channel 12 disconnects；When the pressure at expulsion of compressor is smaller, pressure at expulsion is insufficient to allow elastic element 22, and deformation occurs, or
The deformation quantity of elastic element 22 is not enough to band movable slider and blocks by-pass prot 13, at this point, sliding block 21 is located at evacuation position, by-pass prot 13
It is connected to compression chamber 11, and then is connected to compression chamber 11 with exhaust passage 12, sliding block 21 is located at evacuation position at this time.
Preferably, elastic element 22 is spring, and one end of spring is connect with sliding block 21, and the other end of spring is connected to slideway
On 14 bottom wall.
Specifically, the spring of appropriate length and rigidity can be selected according to the operating condition of compressor.In the present embodiment, bullet
Property element 22 usually select cylindroid helical-coil compression spring, material be SWP-B (qin steel wire belongs to high-carbon steel), the shear mould of material
Amount G can be inquired, and can calculate spring rate P ' according to formula.
As shown in figure 8, set the initial length of spring in a free state as Ho, length when minimum service load is
H1, length when maximum working load is Hn.When compressor is run under the small load condition of low ambient temperature, system exhaust
Pressure P1, the bearing area of sliding block 21 is S, then can be calculated according to formula, the deformation quantity of spring are as follows: F1=P1* S/P ', it is minimum
Length H when service load1=Ho-F1.It requires according to the present embodiment, it is desirable to which compressor is in the small negative of low ambient temperature
When running under lotus operating condition, spring does not generate deformation quantity, therefore, F1It is the smaller the better.
When compressor is run under the high load working condition of high environment temperature, the pressure at expulsion of system is Pn, sliding block 21
Bearing area is S, then can be calculated according to formula, the deformation quantity of spring are as follows: Fn=Pn*S/P ', length when maximum working load
Spend Hn=H0-Fn.According to an embodiment of the present application, it is desirable to when being run under the high load working condition of the high environment temperature of compressor, bullet
Spring has biggish deformation quantity, so that sliding block 21 be made to block by-pass prot 13 under the drive of spring, realization compressor is at full capacity
Delivery is adjusted.
Further, slideway 14 is the blind hole being provided in cylinder block 10.
In this application, for slideway 14 between compression chamber 11 and exhaust passage 12, by-pass prot 13 is sequentially communicated compression chamber
11, slideway 14 and exhaust passage 12.
Preferably, in an embodiment of the present invention, the internal diameter of by-pass prot 13 is designed according to the displacement size of compressor；And
And the position of the stop of piston 40 of the by-pass prot 13 apart from piston compressor, it needs according to compressor dry run state
Calculated result determines, so that the setting position of by-pass prot 13 is not influenced the normal compression procedure of compressor；By-pass prot 13 is in cylinder
Radial length on body 10 along compression chamber 11 is designed according to the refrigeration demand of compressor and the discharge capacity of compressor.
As shown in Figure 2 and Figure 4, in the embodiment of the present invention, air cylinder group component further includes the row being connected to exhaust passage 12
Gas silencing cavity 30.
When compressor air-discharging, gas enters exhaust noise silencing chamber 30 through exhaust passage 12, reduces exhaust noise, improves
The usage experience of user.
The embodiment provides a kind of piston compressor, piston compressor includes such as above-mentioned cylinder block group
Part and the piston component being arranged in the compression chamber of cylinder holder assembly.
Cylinder holder assembly of the invention, which is realized, can carry out capacity regulating to compressor, to meet compressor in different works
Refrigeration demand under condition improves the efficiency of compressor, and structure is simple, and cost is relatively low.Therefore, with above-mentioned cylinder holder assembly
Piston compressor also has the above advantages.
Further, piston compressor further includes piston 40, crankshaft 50 and connecting rod 60.Piston 40 is in crankshaft 50 and connecting rod
Under 60 drive, realizes and move back and forth in compression chamber 11, complete air-breathing-compression-exhaust process of compressor.
Preferably, in an embodiment of the present invention, piston compressor has the first operating mode and the second operating mode,
Piston compressor is switched between the first operating mode and the second operating mode by transfiguration switching mechanism.
Specifically, the first operating mode of piston compressor and the second operating mode respectively correspond different operating conditions.It is living
Plug compressor runs different operating modes in operating condition difference, can satisfy the demand of the refrigerating capacity under different operating conditions.Cause
This improves the efficiency of piston compressor by the operating mode of transfiguration switching mechanism switching piston formula compressor.
Further, when piston compressor is in the first operating mode, exhaust passage 12 is connected to compression chamber 11；When
When piston compressor is in the second operating mode, exhaust passage 12 and compression chamber 11 are disconnected.
In this application, when exhaust passage 12 is connected to compression chamber 11, the portion gas in exhaust passage 12 can be flowed into
In compression chamber 11, a part of invalid inspiratory capacity is formed in compression chamber 11, pressure at expulsion is small, has both met under small load condition
Refrigeration capacity requirement, and the inspiratory capacity of compression chamber 11 is reduced, reduce compressor efficiency.Therefore, the first of piston compressor
Operating mode is the operating mode under small load condition, and the first operating mode of piston compressor is suitble in low ambient temperature
Small load condition under open.When exhaust passage 12 and compression chamber 11 disconnect, the gas of sucking compression chamber 11 is effective suction
Tolerance, pressure at expulsion is big, can satisfy the refrigeration capacity requirement under operating condition at full capacity.Therefore, the second work of piston compressor
Mode is the operating mode under high load working condition, and the second operating mode of piston compressor is suitble in the big of high environment temperature
It is opened under load condition.
Preferably, the sliding block 21 of transfiguration switching mechanism at least has evacuation position and stop dog position, keeps away when sliding block 21 is in
Allow position when, piston compressor is in the first operating mode；When sliding block 21 is in stop dog position, piston compressor is in
Second operating mode；When sliding block 21 switches to stop dog position from evacuation position, piston compressor is cut from the first operating mode
Shift to the second operating mode；When sliding block 21 switches to evacuation position from stop dog position, piston compressor is from the second Working mould
Formula switches to the first operating mode.
Specifically, by taking the piston compressor in refrigerator as an example, the first operating mode and the second operating mode be by with
Under type switching:
There is temperature sensor in refrigerator, environment temperature locating for refrigerator and the temperature in refrigerator can be incuded.Temperature passes
Sensor is connected with the controller of control piston compressor in refrigerator.
When environment temperature locating for temperature sensor detects refrigerator is higher (such as 30 DEG C or more), temperature sensor can will
Temperature signal is transferred to controller, and at a high ambient temperature, controller control compressor works under higher pressure at expulsion, this
When compressor pressure at expulsion can compression elastic element 22, be deformed it, under the drive of elastic element 22,21 envelope of sliding block
Stifled by-pass prot 13, sliding block 21 are in stop dog position, and exhaust passage 12 and compression chamber 11 disconnect, and so that compression chamber 11 is formed closing empty
Between, so that compression chamber 11 be made to suck all effective inspiratory capacities of gas, realizes that the delivery of compressor at full capacity is adjusted, meet
Refrigeration capacity requirement under high load working condition improves compressor efficiency.
When environment temperature locating for temperature sensor detects refrigerator is lower (such as 15 DEG C or less), temperature sensor can will
Temperature signal is transferred to controller, and at low ambient temperatures, controller control compressor works under lower pressure at expulsion, this
When compressor pressure at expulsion be insufficient to allow elastic element 22 deformation occurs or the deformation quantity of elastic element 22 is not enough to drive
Sliding block blocks by-pass prot 13, and sliding block 21 is in evacuation position, and by-pass prot 13 is connected to exhaust passage 12 and compression chamber 11, keeps exhaust logical
Portion gas in road 12 flows into compression chamber 11, and a part of invalid inspiratory capacity D is formed in compression chamber 11, small negative meeting
Refrigeration capacity requirement under lotus operating condition simultaneously, reduces the inspiratory capacity of compression chamber 11, reduces compressor efficiency.
The embodiments of the present invention also provide a kind of refrigeration system, refrigeration system includes above-mentioned piston compressor.
The piston compressor of the application realizes single cylinder transfiguration operation, reduces compressor efficiency, and structure is simple, at
This is lower.Therefore, the refrigeration system with above-mentioned piston compressor also has the above advantages.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: due to setting
Transfiguration switching mechanism so as to switch the connection or disconnection of exhaust passage and compression chamber, and then adjusts the air-breathing of compression chamber
Amount.Specifically, when exhaust passage is connected to compression chamber, gas is had through exhaust passage and enters compression chamber, to form one
Divide invalid inspiratory capacity, reduces pressure at expulsion, can satisfy the refrigeration capacity requirement under small load condition；When exhaust passage and compression
When chamber disconnects, the gas for sucking compression chamber is effective inspiratory capacity, and pressure at expulsion is big, can satisfy the refrigeration under operating condition at full capacity
Amount demand.Therefore, by the way that transfiguration switching mechanism is arranged, the varying capacity for realizing single cylinder piston compressor is adjusted, and makes compressor
The refrigeration capacity requirement being adapted under different operating conditions improves compressor efficiency.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of cylinder holder assembly of piston compressor characterized by comprising
Cylinder block (10), the cylinder block (10) are equipped with compression chamber (11) and exhaust passage (12)；
Transfiguration switching mechanism is arranged on the cylinder block (10), and the transfiguration switching mechanism can make the exhaust passage
(12) it is connected to or disconnects with the compression chamber (11).
2. cylinder holder assembly according to claim 1, which is characterized in that the transfiguration switching mechanism includes:
By-pass prot (13) is arranged on the inner wall of the compression chamber (11)；
Switching construction is connect with the by-pass prot (13), the switching construction have make the by-pass prot (13) and the compression
The first state of chamber (11) connection and the second state for disconnecting the by-pass prot (13) and the compression chamber (11)；It is cut when described
When changing structure and being in the first state, the exhaust passage (12) is connected to the by-pass prot (13), when the switching construction
When in second state, the exhaust passage (12) and the by-pass prot (13) are disconnected.
3. cylinder holder assembly according to claim 2, which is characterized in that the switching construction includes:
Slideway (14) is arranged on the cylinder block (10), and the slideway (14) and the compression chamber (11) interval are arranged；
Slide block assembly (20) is movably disposed so that the compression chamber (11) and the by-pass prot in the slideway (14)
(13) it is connected to or disconnects.
4. cylinder holder assembly according to claim 3, which is characterized in that the slide block assembly (20) includes:
Sliding block (21)；
Elastic element (22) is connect with the sliding block (21), pressure at expulsion and the elastic element in the compression chamber (11)
(22) under collective effect, the sliding block (21) is movably disposed in the slideway (14).
5. cylinder holder assembly according to claim 4, which is characterized in that the sliding block (21) at least have evacuation position and
Stop dog position, when the sliding block (21) are in the evacuation position, the by-pass prot (13) and the exhaust passage (12) and
The compression chamber (11) is connected to；When the sliding block (21) is in stop dog position, the by-pass prot (13) and the compression chamber
(11) it disconnects.
6. cylinder holder assembly according to claim 4, which is characterized in that the elastic element (22) is spring, the bullet
One end of spring is connect with the sliding block (21), and the other end of the spring is connected on the bottom wall of the slideway (14).
7. cylinder holder assembly according to any one of claim 3 to 6, which is characterized in that the slideway (14) is to open up
Blind hole on the cylinder block (10).
8. cylinder holder assembly according to any one of claim 1 to 6, which is characterized in that the cylinder holder assembly also wraps
Include the exhaust noise silencing chamber (30) being connected to the exhaust passage (12).
9. a kind of piston compressor, which is characterized in that the piston compressor includes such as any one of claims 1 to 8
The cylinder holder assembly and the piston component being arranged in the compression chamber of the cylinder holder assembly.
10. piston compressor according to claim 9, which is characterized in that the piston compressor has the first work
Operation mode and the second operating mode, the piston compressor by the transfiguration switching mechanism in first operating mode and
It is switched between second operating mode.
11. piston compressor according to claim 10, which is characterized in that when the piston compressor is in described
When the first operating mode, the exhaust passage (12) is connected to the compression chamber (11)；When the piston compressor is in institute
When stating the second operating mode, the exhaust passage (12) and the compression chamber (11) are disconnected.
12. piston compressor according to claim 11, which is characterized in that the sliding block (21) of the transfiguration switching mechanism
At least there is evacuation position and stop dog position, when the sliding block (21) are in the evacuation position, the piston compressor
In first operating mode；When the sliding block (21) is in the stop dog position, the piston compressor is in institute
State the second operating mode；When the sliding block (21) switches to the stop dog position from the evacuation position, the piston type pressure
Contracting machine switches to second operating mode from first operating mode；When the sliding block (21) switches from the stop dog position
When to the evacuation position, the piston compressor switches to first operating mode from second operating mode.
13. a kind of refrigeration system, which is characterized in that the refrigeration system includes as described in any one of claim 9 to 12
Piston compressor.
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| CN109958625A (en) * | 2018-12-20 | 2019-07-02 | 珠海格力电器股份有限公司 | Pin elastic portion deformation control method and control system, positive displacement compressor |
| CN110410307A (en) * | 2019-08-14 | 2019-11-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110410296A (en) * | 2019-08-14 | 2019-11-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110425115A (en) * | 2019-08-14 | 2019-11-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
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| CN110454360A (en) * | 2019-08-14 | 2019-11-15 | 珠海格力节能环保制冷技术研究中心有限公司 | The method that the change discharge capacity of compressor, refrigeration equipment and compressor determines |
| CN110469497A (en) * | 2019-08-14 | 2019-11-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN112594180A (en) * | 2020-12-01 | 2021-04-02 | 加西贝拉压缩机有限公司 | Effective cylinder volume adjusting structure of compressor |
| CN112780541A (en) * | 2020-12-23 | 2021-05-11 | 加西贝拉压缩机有限公司 | Effective cylinder volume self-adaptive adjusting structure for refrigeration compressor |
| CN113027731A (en) * | 2021-03-24 | 2021-06-25 | 加西贝拉压缩机有限公司 | Micromotor adjusting device for air displacement of compressor |
| CN113027742A (en) * | 2021-03-31 | 2021-06-25 | 加西贝拉压缩机有限公司 | Electromagnetic variable volume device for adjusting effective cylinder volume of compressor |
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| CN109958625A (en) * | 2018-12-20 | 2019-07-02 | 珠海格力电器股份有限公司 | Pin elastic portion deformation control method and control system, positive displacement compressor |
| CN110454360A (en) * | 2019-08-14 | 2019-11-15 | 珠海格力节能环保制冷技术研究中心有限公司 | The method that the change discharge capacity of compressor, refrigeration equipment and compressor determines |
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| CN110425115A (en) * | 2019-08-14 | 2019-11-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110425113A (en) * | 2019-08-14 | 2019-11-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110425114A (en) * | 2019-08-14 | 2019-11-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110425118A (en) * | 2019-08-14 | 2019-11-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigerating plant with it |
| CN110410296A (en) * | 2019-08-14 | 2019-11-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110410307A (en) * | 2019-08-14 | 2019-11-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110454365A (en) * | 2019-08-14 | 2019-11-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration equipment with it |
| CN110425118B (en) * | 2019-08-14 | 2021-09-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigerating device with same |
| CN112594180A (en) * | 2020-12-01 | 2021-04-02 | 加西贝拉压缩机有限公司 | Effective cylinder volume adjusting structure of compressor |
| CN112780541A (en) * | 2020-12-23 | 2021-05-11 | 加西贝拉压缩机有限公司 | Effective cylinder volume self-adaptive adjusting structure for refrigeration compressor |
| CN113027731A (en) * | 2021-03-24 | 2021-06-25 | 加西贝拉压缩机有限公司 | Micromotor adjusting device for air displacement of compressor |
| CN113027731B (en) * | 2021-03-24 | 2022-12-13 | 加西贝拉压缩机有限公司 | Micromotor adjusting device for air displacement of compressor |
| CN113027742A (en) * | 2021-03-31 | 2021-06-25 | 加西贝拉压缩机有限公司 | Electromagnetic variable volume device for adjusting effective cylinder volume of compressor |
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