CN208268068U - Compressor and refrigerating plant with it - Google Patents

Abstract

The utility model discloses a kind of compressor and with its refrigerating plant, the compressor includes: shell, compression unit, noise elimination part, first flows to control piece and driving portion.There is the first space in shell；There is third space, and third space has suction inlet and discharge opening in compression unit；There is second space, second space is suitable for connection third space in noise elimination part；First inlet and outlet for flowing to control piece are respectively communicated with second space and the first space, for fluid from second space to the first space one-way flow；Driving portion is connected with compression unit, and driving portion is for driving compression unit to pump fluid from suction inlet to discharge opening.Starting according to the compressor of the utility model embodiment, after can be convenient compressor shutdown.

Description

Compressor and refrigerating plant with it

Technical field

The utility model relates to fluid compression technical field, in particular to a kind of compressor and the system with the compressor Device for cooling.

Background technique

Under normal conditions, the inner space of the shell of high back pressure compressor forms the high-voltage section of exhaust space, liquid storage device Inner space forms low voltage section.Therefore, during operation, if the power supply of refrigeration cycle disconnects, the pressure of inspiration(Pi) of compressor It is big with the pressure difference of exhaust pressure, cause compressor that can not restart moment.

The heating power expansion valve of no pressure release is especially generallyd use in the unitary air conditioner field of north America region as throttling dress It sets, when compressor stops, this throttling set blocks the connection of exhaust side and suction side automatically, and system is by driving refrigeration to follow The fan of ring makes the efficiency of refrigerating circulatory device maximize using waste heat.

The time that above-mentioned throttling set causes the pressure difference of refrigerating circulatory device to reach balance pressure is long, causes compressor can not Restart, high pressure compressor is caused to be difficult to be suitable for the refrigerating plant such as unitary air conditioner.Also, in high back pressure compressor because of institute It states pressure difference to be unable in the state of restarting, if be continuously applied power supply, motor generates overload, and triggering motor is excessively negative The movement of lotus protective device, causes compressor to be chronically at halted state.

Utility model content

The utility model first aspect is to propose a kind of compressor, can be in order to the starting after compressor shutdown.

The utility model second aspect is to propose a kind of refrigerating plant with the compressor.

According to the compressor of the utility model embodiment, comprising: shell, compression unit, noise elimination part, first flow to control piece with And driving portion.There is the first space in the shell；There is third space, and the third space has suction in the compression unit Entrance and discharge opening；There is second space, the second space is suitable for being connected to the third space in the noise elimination part；Described One inlet and outlet for flowing to control piece are respectively communicated with the second space and first space, are used for fluid from the second space To first space one-way flow；The driving portion is connected with the compression unit, and the driving portion is for driving the compression Portion pumps fluid from the suction inlet to the discharge opening.

Starting according to the compressor of the utility model embodiment, after can be convenient compressor shutdown.

In addition, can also have the following additional technical features: according to the compressor of the utility model above-described embodiment

In one embodiment of the utility model, the compressor further include: second flows to control piece, the second It is connected to respectively with the suction side of the compression unit and exhaust end to control piece, described second, which flows to control piece, is separating and connecting institute It states convertible between the suction side of compression unit and the state of exhaust end.

In one embodiment of the utility model, the compressor further include: third traffic organising part, the third stream It is connected to control piece with the compression unit, and the third traffic organising part makes the third space switch on and off described It is convertible between the state in two spaces.

In one embodiment of the utility model, the compressor further include: second flows to control piece, the second It is connected to respectively with the suction side of the compression unit and exhaust end to control piece, described second, which flows to control piece, is separating and connecting institute It states convertible between the suction side of compression unit and the state of exhaust end, wherein described second one end for flowing to control piece is connected to Described first flows between control piece and the third traffic organising part, and described second other end for flowing to control piece is connected to institute First is stated to flow between control piece and the suction inlet of the compression unit.

In one embodiment of the utility model, when the compression unit generates compression load, the second flow direction control Product is closed；When removing the compression load in the compression unit, described second flows to control piece opening.

In one embodiment of the utility model, described second flows to control piece and driving portion linkage, in institute State driving portion operation when described in second flow to control piece make the compression unit suction side and exhaust end disconnect and in the driving Second flows to control piece and connects the suction side of the compression unit with exhaust end described in when portion stops.

In one embodiment of the utility model, described second flow to control piece and the driving portion start simultaneously and/ Or it simultaneously closes off.

In one embodiment of the utility model, the compressor further include: test section, the test section and the drive Dynamic portion's signal, which transmits and detects described second, flows to control piece, to start described in the driving portion foregoing description test section detection Second flows to the state of control piece.

In one embodiment of the utility model, the driving portion with described second flow to control piece independently of each other by Control.

In one embodiment of the utility model, it is empty that described second one end for flowing to control piece is connected to described second Between.

In one embodiment of the utility model, the compressor further include: liquid storage device, described in liquid storage device connection The suction inlet of compression unit, wherein described second other end for flowing to control piece is connected to the liquid storage device；Or the second flow direction control The other end of product is connected to the pipeline between the liquid storage device and the compression unit.

In one embodiment of the utility model, described second, which flows to control piece, is placed outside the shell, the compression Machine further include: bypass pipe, described second flows to suction side and the exhaust end that control piece is respectively communicated with the compression unit, and the side Siphunculus flows to control piece with described second and concatenates.

In one embodiment of the utility model, if the pressure difference between the suction side and exhaust end of the compression unit Not less than a reference value, described second, which flows to control piece, connects the suction side of the compression unit with exhaust end, and the driving portion Delay start.

In one embodiment of the utility model, a reference value is not more than 1.5MPa；Or a reference value is not less than 0.05MPa。

In one embodiment of the utility model, described first, which flows to control piece and the third traffic organising part, has Identical structure.

In one embodiment of the utility model, the driving portion, the compression unit, the noise elimination part and described One, which flows at least one of control piece, is disposed in the housing.

In one embodiment of the utility model, the compression unit includes: roller, cylinder body, baffle and shaft, described Cylinder body is around the roller, and the two sides of the cylinder body in the axial direction are closed by base bearing and supplementary bearing respectively, the cylinder body Third space is formed between the roller；The baffle is telescopically located on the roller, the baffle and the roller Abut the inner peripheral surface of the cylinder body respectively the third space is divided into suction chamber and compression chamber；The shaft and the rolling Son is connected to drive the roller rotation to calm the anger, and the shaft runs through the base bearing, wherein the driving portion and the shaft It is connected, the noise elimination part is the cover board being covered on the base bearing.

In one embodiment of the utility model, the base bearing includes: main part and extension, the main part envelope Close the cylinder body；The extension extends along the axis of the compression unit towards the direction far from the compression unit；Wherein, described turn Axis passes through the main part and connects the roller, and the extension is socketed on the shaft outer peripheral surface, and the noise elimination part is surround The extension setting.

In one embodiment of the utility model, the outer peripheral surface of the extension be with ladder axis shape, it is described to disappear The inner edge of line is resisted against at the step of the extension.

In one embodiment of the utility model, the noise elimination part is covered on the compression unit and covers the discharge Mouthful, the noise elimination part and the compression unit cooperatively form the second space.

In one embodiment of the utility model, the noise elimination part interference fit connection compresses connection or by sealing ring It is tightly connected the compression unit.

In one embodiment of the utility model, the noise elimination part is installed on described first and flows on control piece.

In one embodiment of the utility model, the noise elimination part with described first flow to control piece be threadedly coupled, spiral shell Nail is connected, is bolted, is welded to connect or is at least partly integrally formed.

According to the refrigerating plant of the utility model embodiment, comprising: compressor, First Heat Exchanger and the second heat exchanger, institute It states compressor, the First Heat Exchanger and second heat exchanger and connects into circulation loop, the compressor is according to aforementioned Compressor.

Detailed description of the invention

Fig. 1 is the cross-sectional view of the compressor of the utility model one embodiment.

Fig. 1 a is the partial enlargement diagram of Fig. 1 centre circle A.

Fig. 2 is the schematic diagram of the compressor of another embodiment of the utility model.

Fig. 3 is the schematic diagram of the compressor of another embodiment of the utility model.

Fig. 4 is the schematic diagram of the compressor of another embodiment of the utility model.

Fig. 5 is the schematic diagram of the compressor of another embodiment of the utility model.

Fig. 6 a is the first of the compressor of the utility model one embodiment to flow to the schematic diagram of control piece.

Fig. 6 b is the second of the compressor of the utility model one embodiment to flow to the schematic diagram of control piece.

Fig. 6 c is the schematic diagram of the third traffic organising part of the compressor of the utility model one embodiment.

Fig. 7 is the schematic diagram of the refrigerating plant of the utility model one embodiment.

Fig. 8 is the schematic diagram of the refrigerating plant of the utility model one embodiment, wherein compressor switches from open state To shutdown.

Fig. 9 is the schematic diagram of the refrigerating plant of the utility model one embodiment, wherein compressor is in off-mode.

Figure 10 is the schematic diagram of the refrigerating plant of the utility model one embodiment, wherein compressor is cut from off-mode Shift to booting.

Figure 11 A is the flow diagram of compressor restarting process in the related technology.

Figure 11 B is the pressure change schematic diagram of compressor restarting process in the related technology.

Figure 12 A is the flow diagram of the compressor restarting process of the utility model.

Figure 12 B is the pressure change schematic diagram of the compressor restarting process of the utility model.

Figure 13 is the pressure change schematic diagram of the utility model with compressor restarting process in the related technology.

Appended drawing reference:

Refrigerating plant 100,

Compressor 1,

Shell 11, main casing 111, upper housing 112, lower case 113, air intake duct 114, exhaust pipe 115,

Compression unit 12, cylinder body 121, base bearing 122, supplementary bearing 123, roller 124, main part 1221, extension 1222,

Driving portion 13, stator 131, rotor 132, shaft 133,

Noise elimination part 14,

Liquid storage device 15,

First flows to control piece 161, and second flows to control piece 162, third traffic organising part 163, bypass pipe 164,

First outer cover 1611, the first valve body 1612, valve body limiting device 1613, valve space 1614, the first open end 1615, Second open end 1616,

Second outer cover 1621, the second valve body 1622, driving structure 1624,

First space 101, second space 102, third space 103, the 4th space 104, discharge opening 105, suction inlet 106, Protective device 107,

First Heat Exchanger 2, the first fan 2a,

Second heat exchanger 3, the second fan 3a,

Throttle valve 4.

Specific embodiment

Under normal conditions, 1 refrigeration cycle of vapour compression machine (hereinafter referred to as refrigeration cycle) of domestic air conditioning mostly uses height Back pressure compressor 1.

High back pressure compressor 1 refers to that refrigerant is directly inhaled into the compressor 1 of compression chamber.This compressor 1 is in order to anti- Only liquid refrigerant or oil stream enter compression chamber, and liquid storage device 15 usually is arranged in suction side.

The inner space of the shell 11 of high back pressure compressor 1 forms the high-voltage section of exhaust space, and the inside of liquid storage device 15 is empty Between form low voltage section.Therefore, during operation, if the power supply of refrigeration cycle disconnects, the pressure of inspiration(Pi) of compressor 1 and exhaust The pressure difference of pressure is big, causes compressor 1 that can not restart moment.

The heating power expansion valve of no pressure release is especially generallyd use in the unitary air conditioner field of north America region as throttling dress It sets, when compressor 1 stops, this throttling set blocks the connection of exhaust side and suction side automatically, and system passes through driving refrigeration The fan of circulation makes the efficiency of refrigerating circulatory device maximize using waste heat.

The time that above-mentioned throttling set causes the pressure difference of refrigerating circulatory device to reach balance pressure is long, causes compressor 1 cannot Enough restart, high pressure compressor 1 is caused to be difficult to be suitable for the refrigerating plant 100 such as unitary air conditioner.Under normal conditions, high back pressure Compressor 1 is based on its feature, pressure difference between pressure of inspiration(Pi) and pressure at expulsion as low as 0.05MPa degree in the case where can not weigh It opens.Also, in the state that high back pressure compressor 1 is unable to restarting because of the pressure difference, if be continuously applied power supply, Motor generates overload, and triggering motor overload protection device movement causes compressor 1 to be chronically at halted state.Therefore, permit Perhaps high back pressure compressor 1 short the time required to balance pressure is difficult to be suitable for utilize the refrigeration of waste heat in the time required for balance pressure Circulator.Therefore, in the area for the efficiency for paying attention to refrigerating circulatory device, it is difficult to will be as the rotary of high back pressure compressor 1 Compressor 1 is suitable for air-conditioning etc..

In addition, refrigerating circulatory device opens again after stopping using existing high back pressure Rotary Compressor 1 When dynamic, it can not swimmingly realize the restarting of compressor 1, motor overload protection device is thus caused repeatedly to be moved Make, so that it is impaired to make overload protection device, and then causes motor because crossing thermal damage, reduces the reliability of compressor 1.

In order to solve the problems, such as at least one above-mentioned, the utility model provides a kind of compressor 1.

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

If Fig. 1 is according to the compressor 1 of the utility model embodiment, comprising: shell 11, compression unit 12, noise elimination part 14, first Traffic organising part 161 and driving portion 13.

Specifically, having the first space 101 in shell 11.There is third space 103, and third space in compression unit 12 103 have suction inlet 106 and discharge opening 105, wherein compression unit 12 is suitable under the driving effect of driving portion 13, by suction inlet Fluid at 106 is pumped into discharge opening 105.There is second space 102, second space 102 is suitable for connection third in noise elimination part 14 Space 103.First inlet and outlet for flowing to control piece 161 are respectively communicated with second space 102 and the first space 101, for fluid from Second space 102 is to 101 one-way flow of the first space, that is to say, that first, which flows to control piece 161, limits in the first space 101 Fluid flow back into second space 102.Driving portion 13 is connected with compression unit 12, and driving portion 13 is for driving compression unit 12 from suction Entrance 106 pumps fluid to discharge opening 105.

According to the compressor 1 of the utility model embodiment, avoid fluid reflux in the first space 101 to second space 102, when compressor 1 is shut down, the suction side (suction side in other words) of compression unit 12 and the exhaust end of compression unit 12 (are arranged in other words Gas side) pressure difference can maintain lower pressure difference, and avoid the pressure difference of the suction side of compression unit 12, exhaust end excessive.

In addition, second space 102 is suitable for connection third space 103 in the utility model: can be second space 102 and the Three spaces 103 are connected to always；It is also possible to that valve is arranged between second space 102 and third space 103, selective connection Two spaces 102 and third space 103.

Preferably, it can be check valve that first in the utility model, which flows to regulating part,.

In addition, the suction side of compression unit 12 refers to the side of connection suction inlet 106 in the utility model, and compression unit 12 Exhaust end refers to the side of connection discharge opening 105.In a specific example of the utility model, there is compression in compression unit 12 Chamber and suction chamber, wherein suction chamber is the chamber (including be connected to or selectively communicate with always) for connecting suction inlet 106；Compression Chamber is the chamber (including be connected to or selectively communicate with always) for connecting discharge opening 105, wherein the suction side of compression unit 12 can also To be interpreted as suction chamber, and the exhaust end of compression unit 12 is it can be appreciated that compression chamber.

Compression unit 12 imports and exports the pressure balance of side, Ke Yi when advantageously, in order to further compressor 1 is convenient for shut down When the pressure difference of the inlet and outlet of compression unit 12 side is excessive, the pressure for importing and exporting side to compression unit 12 carries out equalization processing, for example, setting Component connects suction side and the exhaust end of compression unit 12.

Such as Fig. 1, in one embodiment of the utility model, compressor 1 further include: second flows to control piece 162, and second Traffic organising part 162 is connected to the suction side of compression unit 12 and exhaust end respectively, and second, which flows to control piece 162, is separating and connecting It is convertible between the suction side of compression unit 12 and the state of exhaust end.Control piece 162 is flowed to by second, is connect to the property of can choose Lead to suction side and the exhaust end of the compression unit 12, it, can be with for example, when the pressure difference in 12 suction side of compression unit and exhaust end is excessive Suction side and the exhaust end of compression unit 12 are connected to realize the equalization of 12 pressure at both sides of compression unit.In addition, normal in compressor 1 In operational process, second flows to the state that control piece 162 is usually processing pass section, so that convenient pass through 12 pump flow of compression unit Body according to actual demand, can also open second in 1 operational process of compressor and flow to control piece 162 certainly.

Preferably, second in the utility model, which flows to control piece 162, to be solenoid valve etc..

In 1 use process of compressor, the refrigerant to be spued by compression unit 12 can not be from the first sky of 1 shell 11 of compressor Between 101 into noise elimination part 14 102 direction of second space adverse current, therefore, can operate and be equivalent to needed for balance pressure for a long time The pressure difference in the pressure difference section of time operates, meanwhile, on the basis of the direction that refrigerant flows to that control piece 161 is discharged from first, The suction side of compression unit 12 connects second be selectively opened and closed with exhaust end and flows to control piece 162, stops as a result, in compressor 1 When only, the suction side of compression unit 12 and exhaust side can be made to be rapidly reached balance pressure, therefore, for such as Rotary Compressor 1 High back pressure compressor 1, can swimmingly be restarted.

Such as Fig. 1, in one embodiment of the utility model, compressor 1 further include: third traffic organising part 163, third Traffic organising part 163 is connected with compression unit 12, and third traffic organising part 163 makes third space 103 switch on and off second It is convertible between the state in space 102.

In addition, refrigerant flow path can be made of the first refrigerant flow path P1 and second refrigerant flow path P2, described first Refrigerant flow path P1 is connected between exhaust side and suction side on the basis of compression unit 12, the second refrigerant flow path P2 connection The both ends of one refrigerant flow path P1.One end of second refrigerant flow path P2 is with (the third traffic organising for accurate of compression unit 12 Part 163) on the basis of be connected to exhaust side, the other end of second refrigerant flow path P2 is connected to air-breathing on the basis of compression unit 12 Side.

For example, it is assumed that one end of the first refrigerant flow path P1 is on the basis of the third traffic organising part 163 of compression unit 12, from When until as second space 102 to third space 103, the first refrigerant flow path P1 can be the second space to compressor 1 The refrigerant of 102 discharges is connected to third space 103 via the refrigeration cycle for including condenser, expansion valve and evaporator Flow path.

In addition, second refrigerant flow path P2 can be on the basis of the discharge valve of compression unit 12, compressor 1 by the second sky Between the flow path that is directly connected between 102 and the compression space of compression unit 12 without condenser, expansion valve and evaporator.

It is aforementioned when being provided with the scheme that second flows to control piece 162 and third traffic organising part 163 and being combined together, it can be with With more preferably technical effect.Specifically, in one embodiment of the utility model, compressor 1 further include: the second flow direction Control piece 162, second flows to control piece 162 is connected to the suction side of compression unit 12 and exhaust end respectively, and second flows to control piece 162 is convertible between the state of the suction side and exhaust end that separate and connect compression unit 12, wherein second flows to control piece 162 one end is connected to first and flows between control piece 161 and third traffic organising part 163, and second flows to the another of control piece 162 One end is connected to first and flows between control piece 161 and the suction inlet 106 of compression unit 12.

Second in the utility model it can be seen from foregoing description flow to control piece 162 preferably with third space 103 In parallel, that is to say, that second flows to the entrance side and outlet side that control piece 162 connects third space 103, but second The inner space of traffic organising part 162 is separated with third space 103.

In addition, second, which flows to control piece 162, may be connected to compression for whether third traffic organising part 163 being arranged Other positions on machine 1, it is only necessary to meet can by second flow to control piece 162 balance compression unit 12 into exhaust end pressure difference i.e. It can.

For example, one end that second flows to control piece 162 can be connected to second space 102.In another example the second flow direction control Product 162 is connected to the discharge opening 105 of compression unit 12 and first and flows between control piece 161.

And for the other end that second flows to control piece 162, it can be connected to the suction side of compression unit 12, example Such as, the other end that second flows to control piece 162 can be connected directly to the suction inlet 106 of compression unit 12；It can also press Interconnected multiple suction inlets 106 are set in contracting portion 12 to be connected to second other end for flowing to control piece 162.

Further, such as Fig. 1, in some preferably schemes of the utility model, compressor 1 further includes having liquid storage device 15, liquid storage device 15 is connected to the suction inlet 106 of compression unit 12.

At this point it is possible to which the other end that second flows to control piece 162 is connected to liquid storage device 15, or the second flow direction is controlled The other end of product 162 be connected between liquid storage device 15 and compression unit 12 (for example, using pipeline connect liquid storage device 15 and pressure The other end that second flows to control piece 162 is connected on the pipeline by contracting portion 12)

Certainly, the description of the above-mentioned connection type that control piece 162 is flowed to second is only some tools of the utility model Body example is not the limitation to scope of protection of the utility model.

In addition, second in the utility model flows to control piece 162 and can have different connection types, it is only necessary to realize The suction side of compression unit and exhaust end pressure at both sides balance.

Such as Fig. 2, one end that second flows to control piece 162 is connected to liquid storage device 15, and flows to the another of control piece 162 for second One end is connected in second space.

Such as Fig. 3, the top (position far from compression unit) for one end connection liquid storage device 15 for flowing to control piece 162 for second, And the other end that second flows to control piece 162 is connected in second space.

Such as Fig. 4, pipeline between one end connection liquid storage device 15 of control piece 162 and compression unit is flowed to by second, and by the Two other ends for flowing to control piece 162 are connected in second space.

In addition, second in the utility model flows to control piece 162 and can also have multiple interfaces, such as the second flow direction control Product 162 has 2,3,4 or 5 or more interfaces etc..

Wherein, such as Fig. 2 to Fig. 5, (or some) interface that second can be flowed on control piece 162 is connected to liquid storage In the positions such as top, lower part, middle part, the inlet tube of device 15 at least one at；Second can be flowed to another on control piece 162 A (or other) interface is connected to second space.

Certainly, the second of foregoing description flows to the connection type of control piece 162, and only the utility model is some specific Example is not the limitation to scope of protection of the utility model.

In addition, the first of the utility model flows to control piece and can be realized for check valve, switch valve, diaphragm valve etc. The valve arrangement of one-way flow；And third traffic organising part may be that check valve, switch valve, diaphragm valve etc. can be realized unidirectionally The valve arrangement of circulation, or the valve arrangement of conversion can be opened and closed in other according to the variation of pressure at both sides；Second flow direction Control piece may be the valve arrangement that solenoid valve, switch valve, diaphragm valve, hydraulic valve etc. can be realized opening and closing.

First in the utility model flow to control piece 161 and third traffic organising part 163 can have it is same or like Structure.

Wherein, referring to Fig. 6 c, third traffic organising part 163 can be the shape of elastic slice, control wherein third can be flowed to Product 163 is connected to the outside of compression unit, and 163 deformable ground of third traffic organising part is pressed on compression unit and closes discharge opening 105, when the pressure difference in 163 two sides of third traffic organising part is greater than predetermined value, third traffic organising part 163 is opened, and fluid can be with It spues from discharge opening 105, the preferably week of discharge opening 105 is along the effect for improving sealing equipped with boss.

In addition, first flow to control piece 161 can with third traffic organising part 163 have same or similar structure.Example Such as, when flowing to control piece 161 for first and being set in noise elimination part, first flows to the shape that control piece 161 can be elastic slice, can To flow to the outside that control piece 161 is connected to noise elimination part for first, and elastic slice deformable ground is pressed in the exit of noise elimination part, When one pressure difference for flowing to 161 two sides of control piece is greater than predetermined value, elastic slice is opened, and fluid can be from discharge.

Certainly, first the structure that control piece 161 and third traffic organising part 163 can also be different is flowed to, and above-mentioned right First flow to control piece 161, second flow to control piece 162 and third traffic organising part 163 specific structure description also only It is only a specific example of the utility model, is not the limitation to scope of protection of the utility model.

In some embodiments of the utility model, the purpose that setting second flows to control piece 162 is to realize The suction side of compression unit 12 and exhaust end be connected to and disconnection.

Therefore, second in the utility model flows to control piece 162 and can be set into, when compression unit 12 generates compression load When, second flows to the closing of control piece 162；When removing the compression load in compression unit 12, second flows to the opening of control piece 162. The pressure balance that side is imported and exported so as to compression unit 12 of guaranteeing the quality after the shutdown of compressor 1, reduces pressure difference, to guarantee compressor 1 smooth starting next time.

Second in the utility model, which flows to control piece 162, can be and the linkage of driving portion 13.

For example, second flows to control piece 162 and the linkage of driving portion 13, when driving portion 13 is run, second flows to control piece 162 make the suction side of compression unit 12 and exhaust end disconnect and second flow to control piece 162 when driving portion 13 stops and make compression unit 12 suction side is connected with exhaust end.To can be rapidly again started up in time after facilitating compressor 1 to shut down.

Further preferably, it second flows to control piece 162 and starts and/or simultaneously close off simultaneously with driving portion 13.

It should be noted that can be controlled to the second flow direction of detection is provided in order to further improve the stability of compressor 1 The structure of 162 state of product, for example, compressor 1 further include: test section, test section and 13 signal of driving portion transmit and detect the Two flow to control piece 162, with the state that test section detection second flows to control piece 162 before starting driving portion 13.Pass through inspection Survey ensures that second flows to the state of control piece 162, to guarantee that compression process stabilization is effectively performed, compressor 1 is avoided to run In the process, since second flows to control piece 162 and open and lead to the security risk of energy loss and generation.

Preferably, it is controlled for the ease of more freely flowing to control piece 162 to driving portion 13 and second, this is practical It can be set into novel, driving portion 13 flows to control piece 162 with second and is controlled independently of each other.

In conjunction with Fig. 1 to Fig. 5, in one embodiment of the utility model, second, which flows to control piece 162, is placed outside shell 11, compressor 1 further include: bypass pipe 164, second flows to suction side and the exhaust end that control piece 162 is respectively communicated with compression unit 12, And bypass pipe 164 flows to control piece 162 with second and concatenates.That is, connecting second by bypass pipe 164 flows to control piece 162, to reduce the status requirement for flowing to control piece 162 to second, guarantee effective complete machine structure, stabilization and connection and reasonable arrangement.

In one embodiment of the utility model, if the pressure difference between the suction side and exhaust end of compression unit 12 is not Less than a reference value, second, which flows to control piece 162, connects the suction side of compression unit 12 with exhaust end, and the delay of driving portion 13 is opened It is dynamic.To avoid driving portion 13 that from can not starting compression unit 12.

In one embodiment of the utility model, a reference value is not more than 1.5MPa；Or a reference value is not less than 0.05MPa. For example, 0.04MPa, 0.2MPa, 0.4MPa, 0.6MPa, 0.9MPa, 1.23MPa, 2MPa etc. are set by a reference value, according to It is actually detected as a result, if pressure difference is greater than some value when causing compressor start difficult or being difficult to start, open the Two flow to control piece.

In addition, being directed to compression unit and second flows to the scheme of control piece synchronous switch, the two sides of compression unit may not There are pressure difference, can bosom friend boot up without detecting pressure difference.Certainly, in order to run with guaranteeing compressor normal table, no matter Second flow to control piece and compression unit whether synchronous switch, pressure difference can be detected to improve the stability of compressor operation.

Such as Fig. 1, in one embodiment of the utility model, driving portion 13, compression unit 12, noise elimination part 14 and first-class It is set in shell 11 at least one of control piece 161.

Such as Fig. 1, in one embodiment of the utility model, compression unit 12 include: roller 124, cylinder body 121, baffle with And shaft 133, cylinder body 121 is around roller 124, and the two sides of cylinder body 121 in the axial direction are respectively by base bearing 122 and supplementary bearing 123 closings, form third space 103 between cylinder body 121 and roller 124；Baffle is telescopically located on roller 124, baffle with Roller 124 abuts the inner peripheral surface of cylinder body 121 respectively third space 103 is divided into suction chamber and compression chamber；Shaft 133 and rolling Son 124 is connected to drive the rotation of roller 124 to calm the anger, and shaft 133 runs through base bearing 122, wherein driving portion 13 and 133 phase of shaft Even, noise elimination part 14 is the cover board being covered on base bearing 122.

Such as Fig. 1, in one embodiment of the utility model, base bearing 122 includes: main part 1221 and extension 1222,1221 closed cylinder 121 of main part；Extension 1222 prolongs along the axis of compression unit 12 towards the direction far from compression unit 12 It stretches；Wherein, shaft 133 passes through main part 1221 and connects roller 124, and extension 1222 is socketed on 133 outer peripheral surface of shaft, noise reduction Portion 14 is arranged around extension 1222.

Preferably, therefore the shaft 133 of compression unit 12 and the shaft of driving portion in the accompanying drawings can may be used for the same axis To share label, the shaft 133 of certain compression unit 12 and the shaft of driving portion may be not coaxial.

In one embodiment of the utility model, the outer peripheral surface of extension 1222 is with ladder axis shape, noise elimination part 14 inner edge is resisted against at the step of extension 1222.

In one embodiment of the utility model, noise elimination part 14 is covered on compression unit 12 and covers discharge opening 105, disappears Line 14 and compression unit 12 cooperatively form second space 102.

In one embodiment of the utility model, the connection of the interference fit of noise elimination part 14 compresses connection or close by sealing ring Envelope connection compression unit 12.

In one embodiment of the utility model, noise elimination part 14 is installed on first and flows on control piece 161.

In one embodiment of the utility model, noise elimination part 14 with first flow to control piece 161 be threadedly coupled, screw connect It connects, be bolted, be welded to connect or be at least partly integrally formed.

According to the refrigerating plant 100 of the utility model embodiment, comprising: compressor 1, First Heat Exchanger 2 (such as condense Device) and the second heat exchanger 3 (such as evaporator), compressor 1, First Heat Exchanger 2 and the second heat exchanger 3 connect into and be recycled back to Road, compressor 1 are according to compressor 1 above-mentioned.

The purpose of the utility model is to provide high back pressure compressors and the refrigeration cycle for having the high back pressure compressor to fill It sets, in the case where operating again after refrigerating circulatory device closing, can restart rapidly.

In addition, the another object of the utility model is, high back pressure compressor is provided and has the high back pressure compressor Refrigerating circulatory device while compressor stops, being implemented to use in the case where refrigerating circulatory device closes compressor stopping In releasing the balance pressure operating between pressure of inspiration(Pi) and exhaust pressure, so that compressor can when refrigerating circulatory device operates again Restarting rapidly.

In addition, the another object of the utility model is, high back pressure compressor is provided and has the high back pressure compressor Refrigerating circulatory device is implemented to inhale for releasing at the time of appropriate in the case where refrigerating circulatory device closes compressor stopping Balance pressure operating between air pressure and exhaust pressure, so that compressor can rapidly again when refrigerating circulatory device operates again Starting.

In addition, the another object of the utility model is, high back pressure compressor is provided and has the high back pressure compressor Refrigerating circulatory device is closed in refrigerating circulatory device, and in the state that compressor stops, refrigerating circulatory device is able to carry out hot friendship It changes.

In addition, the another object of the utility model is, high back pressure compressor is provided and has the system of the high pressure compressor SAPMAC method device, when refrigerating circulatory device operates again, compressor can restart rapidly, thus prevent motor overload Protective device is impaired, and then motor is prevented to be damaged because of overheat, so that the reliability of compressor can be improved.

The high back pressure compressor of the utility model and the refrigerating circulatory device for being applicable in the high back pressure compressor have following Effect: it is provided with for cutting off refrigerant that the second space formed from the bearing of compressor and noise elimination part spues to the axis It holds and first flows to control piece with the second space adverse current of noise elimination part composition, and be provided with and make from compression unit to bearing and noise reduction Portion composition second space spue refrigerant suction side detour bypass pipe from a part to compression unit, and for selectivity What ground was opened and closed the bypass pipe second flows to control piece, therefore, is applicable in the system of the high back pressure compressor such as Rotary Compressor In the case that SAPMAC method device temporarily ceases, on the basis of compression unit, suction side and exhaust side can realize rapidly balance pressure shape State, so that compressor can restart rapidly when refrigerating circulatory device restarts.

Even if compressor stops as a result, by driving the fan of refrigerating circulatory device in its dwell time, can implement The so-called pressure difference operating of heat exchange is persistently carried out, therefore can be improved energy efficiency.Moreover, stop in refrigerating circulatory device After when restarting, prevent compressor restart have some setbacks in the case where the damage of motor overload protection device and motor that generates, To improve the reliability of compressor.

The compressor of the utility model embodiment and the refrigeration equipment with it are described with reference to the accompanying drawing.

Referring to Fig. 7-Figure 10, the refrigerating circulatory device of the present embodiment by compressor 1, First Heat Exchanger 2, throttle valve 4 (such as Expansion valve), the second heat exchanger 3 constitute.The refrigerating circulatory device is suitable for unitary air conditioner (unitaryair- Conditioner in the case where), outdoor unit is provided with compressor, outside heat exchanger (condenser or evaporator), room Machine is provided with indoor heat exchanger (evaporator or condensation to external fan (condenser fan perhaps evaporator fan) indoors Device) and indoor fan (evaporator fan or condenser fan) and expansion valve.

Although without illustrating in the accompanying drawings, refrigerant is set between the exhaust side and suction side of compressor 1 and is converted Valve (not shown), the loop direction of the refrigerant to spue from compressor 1 is converted to outdoor unit or indoor unit, and will refrigeration Circulator is converted to cooling or heating and uses.Referring to shown in Fig. 7-Figure 10 do not illustrate refrigerant switching valve (such as Four way valve) system diagram, lift it is cooling for be illustrated, certainly, be also not meant as the refrigerating circulatory device of the application It can not heat.

The refrigerant of the high pressure to spue from compressor 1 is mobile to the First Heat Exchanger 2 for being set to outdoor unit, which exists First Heat Exchanger 2 by throttle valve 4 and expands after condensing, and the refrigerant of the expansion is by being set to the second heat exchanger of indoor unit 3, and compressor 1 is drawn into again with the state of evaporation, a series of cyclic process is repeated.Wherein, compressor 1 can be First space of its shell forms the Rotary Compressor of the discharge pressure condition of high pressure.

Referring to Fig.1, it in the Rotary Compressor of the present embodiment 1, is provided in the first space of the shell 11 of compressor Motor is provided with the pump housing on the downside of motor.Motor and the pump housing are organically connected by shaft.

Electronic portion is formed are as follows: stator 131 is pressed into the inside of the shell 11 of compressor and fixes, and rotor 132 can rotate Ground is inserted in the inside of stator 131.Center and combination of the indentation of shaft 133 in rotor 132.

Pump housing portion is formed are as follows: 133 upper end of shaft is inserted into inside base bearing 122,124 sets of the roller eccentric parts in shaft 133 Outside, it is fixed by bolts outside roller 124 and with base bearing for 121 sets of cylinder body, is inserted in barrier slides the inside of cylinder body 121, Supplementary bearing 123 is tightened together using bolt with cylinder body 121, and noise elimination part 14 is fixed on 122 upper end of base bearing, tight using bolt Gu using being interference fitted or being sealed using sealing ring between 122 upper surface of 14 lower end surface of noise elimination part and base bearing, thus disappearing Second space 102 is formed between line 14 and base bearing 122, first, which flows to control piece 161, is fixed on noise elimination part using threaded connection 14 upper ends；

Compression unit is formed are as follows: is used to support 122 secure bond of base bearing of shaft 133 in the inner circumferential of the shell 11 of compressor Face supports the supplementary bearing 123 of shaft 133 to separate between regulation with the downside of the base bearing 122 together with the base bearing 122 Every mode be fixed on base bearing 122, the cylinder body to form third space 103 is provided between base bearing 122 and supplementary bearing 123 121.The third space 103 of cylinder body 121 is provided with roller 124, the roller 124 the third space 103 with shaft 133 together It circles round, and compresses refrigerant, be inserted in barrier slides the inside of cylinder body 121, the baffle and roller 124 are together by the Three spaces 103 are divided into suction chamber and compression chamber.

Base bearing 122 is formed with from third space 103 and spues the discharge opening 105 of compressed refrigerant, discharge opening 105 End is provided with the third traffic organising part 163 for being opened and closed the discharge opening 105.The upper surface of base bearing 122, which is provided with, to be had The exhaust noise silencing portion 14 for providing silence space, first flow of exhaust gas is equipped in noise elimination part 14 to control piece 161, base bearing 122 with Noise elimination part 14 and first flows to control piece 161 and collectively constitutes second space 102.

Internal pressure (hereinafter referred to as pressure of inspiration(Pi)) Ps and base bearing 122 and noise elimination part 14 in third space can be passed through as a result, The difference for flowing to internal pressure (hereinafter referred to as exhaust pressure) Pd that control piece 161 collectively constitutes second space 102 with first is opened and closed Third traffic organising part 163.Therefore, when pressure of inspiration(Pi) Ps is too low, the pressure difference between pressure of inspiration(Pi) Ps and exhaust pressure Pd becomes It is excessive, therefore, pressure of inspiration(Pi) Ps cannot reach can pressure at expulsion (pressure that third traffic organising part can be opened), and can not The refrigerant in third space 103 is set to spue.Electronic portion (hereinafter, mixed with motor) generates overload as a result, is arranged by driving Overload protection device 107 in electronic portion leaves the motor off, to remove the compression load of compression unit.

In addition, main casing 111 that the shell 11 of compressor is open by upper and lower ends and passing through the upper of covering main casing 111 Lower both ends are constituted come the upper housing 112 and lower case 13 for sealing the first space 101.The lower half of main casing 111 and after being connected to The suction line 114 of the outlet side for the liquid storage device 15 stated combines, upper housing 112 be connected to exhaust side refrigerant pipe L1 it is aftermentioned The exhaust pipe 115 of the entrance side of First Heat Exchanger 2 combines.Suction line 114 penetrates through main casing 111 and is directly connected in cylinder body 121 Suction inlet 106, exhaust pipe 115 penetrate through upper housing 112 simultaneously be connected to the first space 101 of the shell of compressor 11.

It is configured with liquid storage device 15 in the side of the shell 11 of compressor, the inside of liquid storage device 15 is formed as: with compressor Shell 11 the first space 101 separation the 4th space 104 have defined volume.To suction side refrigerant pipe L2, liquid storage The top of device 15 is connect with the second heat exchanger 3, the suction of the lower part of liquid storage device 15 and the cylinder body 121 for the shell 11 for being connected to compressor Tracheae 114 connects.

Suction side refrigerant pipe L2 is connect with the upper side of liquid storage device 15, and air intake duct 114 forms L-shaped, the air intake duct The bottom surfaces of 114 perforation liquid storage devices 15 are simultaneously inserted into specified altitude to the inside in the 4th space 104 of the liquid storage device 15 and are connected.

In the case where the Rotary Compressor of the present embodiment as described above, when applying power supply to stator 131, rotor 132 and shaft 133 in the internal rotating of stator 131, and roller 124 circles round, and according to the convolution of the roller 124, makes The volume of suction chamber changes, and thus refrigerant is inhaled into cylinder body 121.

By roller 124 and baffle, in the compression load for generating third space 103, thus the refrigerant is compressed, and And the exhaust outlet 3la by being set to base bearing 122 is vented to base bearing 122 and noise elimination part 14 and first flows to control piece 161 Second space 102 is collectively constituted, and then flows to the first space 101 that control piece is vented to the shell 11 by first, is vented Refrigerant to the first space 101 of the shell 11 is discharged to refrigerating circulatory device via exhaust pipe 115, is discharged to the system The refrigerant of SAPMAC method device is via First Heat Exchanger 2, throttle valve 4 and the second heat exchanger 3 and flows into liquid storage device 15, the system Cryogen is inhaled into before cylinder body 121, and by liquid storage device 15, and liquid refrigerant or oil are separated with gaseous refrigerant, as a result, Gaseous refrigerant is inhaled into cylinder body 121, and liquid refrigerant is inhaled into cylinder body 121 after the evaporation of liquid storage device 15.Repeatedly It proceeds as described above.

Even if compressor 1 temporarily ceases (0FF) at this point, the operating of refrigerating circulatory device stops, to remove third space 103 compression load can also be made by the suction side on the basis of compression unit and the pressure difference between exhaust end from the pressure The refrigerant that contracting machine 1 is discharged to refrigeration cycle is changed from the First Heat Exchanger 2 for constituting relatively high pressure to constitute relatively low pressure second Hot device 3 is mobile.Therefore, in the state that compressor 1 stops, i.e., system is driven in the state that the compression load of compression unit is removed When the first fan 2a and indoor fan 4a of SAPMAC method device, refrigerant utilizes waste heat during moving by pressure difference It can continue to carry out heat exchange, the efficiency of refrigerating circulatory device can be improved as a result,.

But Rotary Compressor as described above, due to its feature, in exhaust pressure, (base bearing and noise elimination part are total With the pressure of the second space of composition) pressure difference of Pd and pressure of inspiration(Pi) (pressure in third space) Ps is higher than 0.05MPa's or more In the case of, it can not restart, it is therefore desirable to the time required to maintaining balance pressure for a long time.But carry out for a long time it is flat In the case where the time required to weighing apparatus pressure, leakage increases, and therefore, cannot be balanced pressure for a long time in reality.Therefore balance pressure institute It takes time and preferably carries out the shorter time, still, if so, compressor cannot reach the shape for restarting required balance pressure State, so even refrigerating circulatory device wants restarting, compressor can not restart.Also, if balance pressure is taken Between be set as shorter, then cannot utilize pressure difference section waste heat, therefore, efficiency correspondingly reduces.

In view of the above problems, in the present embodiment, the noise elimination part of the second space collectively constituted in base bearing and noise elimination part Vent position setting first flows to control piece, and the refrigerant to be spued as a result, can not be from the first space of compressor housing The second space direction adverse current collectively constituted to base bearing and noise elimination part, therefore, can operate for a long time and be equivalent to balance pressure The pressure difference in the pressure difference section of required time operates, meanwhile, on the basis of the direction that refrigerant flows to that control piece is discharged from first, Bypass pipe is set between arrival end and the suction side of liquid storage device and second flows to control piece for being selectively opened and closed bypass pipe, As a result, when compressor stops, it can making

The suction side and exhaust side of compression unit are rapidly reached balance pressure, therefore, for the highback such as Rotary Compressor Compressor is pressed, can swimmingly be restarted.

For this purpose, refrigerant flow path can be made of the first refrigerant flow path P1 and second refrigerant flow path P2, described first Refrigerant flow path P1 is connected between exhaust side and suction side on the basis of compression unit, the second refrigerant flow path P2 connection first The both ends of refrigerant flow path P1.One end of second refrigerant flow path P2 is with compression unit (third traffic organising part for accurate) Reference connection exhaust side, the other end of second refrigerant flow path P2 are connected to suction side on the basis of compression unit.

For example, it is assumed that one end of the first refrigerant flow path P1 is on the basis of the third traffic organising part 163 of compression unit from work The second space 102 collectively constituted for exhaust side by base bearing 122 and noise elimination part 14 to cylinder body 121 as suction side the When until three spaces 103, the first refrigerant flow path P1 can be being collectively constituted by base bearing 122 and noise elimination part 14 to compressor Second space 102 be discharged refrigerant via include First Heat Exchanger 2, throttle valve 4 and the second heat exchanger 3 refrigeration follow Ring is connected to the flow path in third space 103.

In addition, second refrigerant flow path P2 can be on the basis of the discharge valve 36 of compression unit, compressor by base bearing Between 122 and the second space 102 collectively constituted of noise elimination part 14 and the third space 103 of compression unit without First Heat Exchanger 2, Throttle valve 4 and the second heat exchanger 3 and the flow path being directly connected to.

Wherein, in conjunction with shown in Fig. 1 to Figure 10, second refrigerant flow path P2 can be made of bypass pipe 164, the bypass pipe 164 both ends are connected to the 4th space of the second space 102 and liquid storage device 15 that are made of base bearing 122 and noise elimination part 14 104。

Also, the first refrigerant flow path P1 is provided with aftermentioned first and flows to control piece 161, and second refrigerant flow path P2 is set It is equipped with aftermentioned second and flows to control piece 162.

As first flows to control piece and second flow to the longitudinal sectional view of control piece in Fig. 6.

Referring to Fig.1, it first flows to control piece 161 and is arranged at the gas vent of noise elimination part 14 of compressor.Thereby, it is possible to subtract The volume of small substantive exhaust high pressure, the time required to thus more shortening balance pressure.

Wherein, it first flows to control piece 161 and can be and can cut off to from the be made of base bearing 122 and noise elimination part 14 The refrigerant that two spaces 102 are discharged to the first space 101 of the shell 11 of compressor is when compressor 10 stops, i.e., in third sky Between 103 compression load when being removed to the first flow direction of 102 adverse current of second space being made of base bearing 122 and noise elimination part 14 Control piece.Certainly, it first flows to control piece 161 and can also be made of electronic valve, it is contemplated that cost or reliability etc., Mechanical valve is more appropriate.

Referring to Fig. 6, first flows to control piece 161 can include: the first outer cover 1611 makes by base bearing 122 and noise elimination part The second space 102 of 14 compositions is connected to the first space 101 of the shell 11 of compressor；First valve body 1612, is contained in institute The first outer cover 1611 is stated, is moved by the pressure difference of two sides, and is opened and closed the first outer cover 1611；Valve body limiting device 1613, For annulus shape, outside has screw thread, can tighten together with outer cover internal screw thread；First outer cover 1611, which is fastened by bolts, to disappear On 14 gas vent of line.

The both ends of first outer cover 1611 are open, and the first space of shell 11 is formed together with valve body limiting device 1613 Open end (the first open end) and compressor side open end (the second open end), in the first open end 1615 and the second open end The valve space 111c that the first valve body 1612 can move expansively is formed between 1616.

First open end 1615 is open and is connected to the first space 101 of shell 11, the second open end 1616 with by leading Bearing 122 is connected to the second space 102 that noise elimination part 14 forms.

Gas connection slot can be formed in the central portion of the first valve body 1612.The first valve body 1612 is open to first as a result, In the case that end 1615 is mobile, second open end 1616 is opened, and opposite to thatly, the first valve body 1612 is open to second In the case that end 1616 is mobile, 1612 bottom bevel of the first valve body and the second open end upper inclined surface are formed and are sealed, can be complete It blocks and is arranged in the second open end 1616.

In addition, as described above, by between base bearing 122 and the second space 102 formed of noise elimination part 14 and liquid storage device 15 Connecting bypass pipe 164 is provided with flow to that control piece is constituted by second 130 in bypass pipe 164.

Also, second flow to control piece 162 with include this second flow to control piece 162 and control refrigerating circulatory device entirety Control unit electrical connection, i.e., control the control unit of the compressor 1 in a manner of linking with compressor 1 and be electrically connected.

As a result, by control unit, second, which flows to control piece 162, links with compressor 1 and is controlled.For example, working as compressor 1 Stopping, when the compression load in third space 103 is removed, second flows to opening while compressor stops of control piece 162, when Compressor 1 is restarted when third space 103 produces ox compression load, and second flows to control piece 162 opens again in compressor 1 It is closed while dynamic.

Wherein, one end of bypass pipe 164 is equivalent to on the basis of the discharge direction of refrigerant and flows to control piece than first 161 forward preceding trip sides are connected to by base bearing 122 with the second space 102 that noise elimination part 14 forms, the other end of bypass pipe 164 It is connect with the 4th space 104 of liquid storage device 15.Certainly, one end of bypass pipe 164 can also be with control piece 161 is flowed to first Benchmark is connected to the First Heat Exchanger 2 that the rear trip side of control piece 161 rearward is flowed to than described first, still, in such case Under, exhaust end refrigerant pipe L1 between control piece 161 and First Heat Exchanger 2 is flowed to as object using first, needs to implement to balance Work is pressed, therefore, is correspondingly postponed the time required to balance pressure.

Referring to Fig. 6, it includes: the second outer cover 1621 that the second of the present embodiment, which flows to control piece 162, is set to bypass pipe 164, it is formed with communicating passage, which is connected to the second space 102 being made of base bearing 122 and noise elimination part 14 Bypass pipe 164 high-pressure side and be connected to liquid storage device the 4th space low-pressure side: driving structure 1624 is formed in second The inside of outer cover 1621, and be electrically connected with control unit；Second valve body 1622, it is (not attached with the mover of driving structure 1624 Icon note) it combines, and moved according to whether applying power supply to the driving structure 1624, thus it is opened and closed communicating passage.

In addition, second flows to control piece 162 and may be configured as: by flowing to control piece 162 for independent control lid second Individual control unit (not shown) or the control unit for being used to control compressor (alternatively, refrigeration cycle control) as previously described, The two-way valve for being electrically controlled aperture amount.In this case, second flow to control piece 162 can be adjusted by aperture amount it is flat The time required to weighing apparatus pressure.

The refrigerating circulatory device of Rotary Compressor including the present embodiment as described above proceeds as follows movement.Figure 8 to Figure 10 be for the refrigerating circulatory device progress pressure difference operating of explanatory diagram 7, balance pressure operating, each signal for restarting operating Figure.

Referring to Fig. 9, when the compressor is stopped, from the second space 102 being made of base bearing 122 and noise elimination part 14 via the One flows to control piece 161 may be to by base bearing 122 and noise elimination part to the refrigerant that 101 direction of the first space of shell 11 is discharged 102 adverse current of second space of 14 compositions, but control piece 161 can be flowed to by first to inhibit.Refrigerant can pass through pressure as a result, Power difference is via throttle valve 4 and the second heat exchanger 3 and only mobile to the direction of liquid storage device 15 from First Heat Exchanger 2.At this point, when make the When one fan 2a or the second fan 3a is acted, even if in the state that compressor 1 stops, by First Heat Exchanger 2 and second The refrigerant of heat exchanger 3 can carry out heat exchange with air, therefore can correspondingly improve the energy efficiency of refrigerating circulatory device.

Then, referring to Fig. 9, while compressor 1 stops, as shown in figure 9, second flows to the connection of control piece 162 and beats Open bypass pipe 164.At this moment, one in refrigerant being discharged to the second space 102 being made of base bearing 122 and noise elimination part 14 Point refrigerant is not mobile to condenser direction, the pressure of second space 102 by being made of base bearing 122 and noise elimination part 14 and The difference of the pressure in the 4th space 104 of liquid storage device 15 and it is mobile to 164 side of bypass pipe, and to the 4th space of liquid storage device 15 104 is mobile.At this moment, the pressure in the 4th space 104 of liquid storage device 15 and the second space being made of base bearing 122 and noise elimination part 14 102 pressure forms balance pressure in defined range (usually within 0.05MPa).At this moment, compressor 1 maintains sucking pressure The states to be restarted such as the Ps and pressure Pd that spues can restart the balance pressure condition of compressor, and compressor 1 is in.

Then, referring to Fig.1 0, when user restarts the refrigerating circulatory device that moment stops, as shown in figure 9, root Become balancing pressure condition according to pressure of inspiration(Pi) Ps and exhaust pressure Pd, compressor drives rapidly again, makes the system compressed in third space 103 Cryogen pushes away third traffic organising part 163, and mobile to the second space 102 being made of base bearing 122 and noise elimination part 14, in turn It is discharged to the first space 101 of the shell 11 of compressor.Refrigerating circulatory device can swimmingly restart as a result,.At this point, the Two, which flow to control piece 162, is converted to close off state from opening state, thus prevents to being made of base bearing 122 and noise elimination part 14 The refrigerant that second space 102 is discharged is mobile to the 4th space 104 of liquid storage device 15 via bypass pipe 164.

Figure 11 A to Figure 11 B is the frame of the movement of the Rotary Compressor of existing Rotary Compressor and the utility model Figure and to the chart of its pressure change and curent change, Figure 11 A and Figure 11 B are the figures of existing Rotary Compressor, Figure 12 A and Figure 12 B is the figure of the utility model.

1A referring to Fig.1, in the case where existing Rotary Compressor is suitable for refrigerating circulatory device, when compressor stops When only, exhaust pressure Pd is persistently reduced, and pressure of inspiration(Pi) Ps is kept after temporarily rising.

Wherein, user acts refrigerating circulatory device, when applying power supply to compressor, pressure difference inside compressor, i.e., When pressure differential deltap P between pressure of inspiration(Pi) Ps and exhaust pressure Pd is equivalent to balance pressure condition (usually within 10.05MPa), compressor Directly operate again.

But the pressure difference inside compressor it is bigger than balance pressure condition when, compressor cannot start, and causing can not be to system Refrigerant gas is compressed and is discharged.At this moment, overcurrent, and motor overload protection are generated on the driving portion as electronic portion Device 107 come prevent to driving portion supply power supply.At this moment, after past recovery time of overload protection device 107, overload Protective device 107 is restored, and applies power supply again to driving portion.But if the pressure inside compressor is not met by balance Above-mentioned movement is then repeated in press strip part.As described above, existing Rotary Compressor need to reach balance pressure condition when Between the above process that is long, therefore being repeated a number of times.

From the point of view of chart, as shown in Figure 11 B.That is, when the compressor is stopped, the refrigerant being discharged from compressor 1 passes through The refrigeration cycle of First Heat Exchanger 2, throttle valve 4 and the second heat exchanger 3, and compressor is flowed into, therefore, exhaust pressure (solid line) is slow Slow reduction.Experimental result reaches the pressure condition (balance pressure condition) that can restart compressor, needs substantially 20 minutes The time of left and right.

Restarting also, until reaching the balance pressure condition, to the driving portion supply such as following chart of Figure 11 B Electric current, but as the restarting of compressor repeatedly fails, electric current can periodically generate high peak point.Generate the peak value The place of point is the place that overload protection device 107 acts, and is that overload movement device restores again between the peak point Section.As shown, be gradually distance between peak point, this is because with compressor restarting failure repeatedly, cause Overload protection device 107 overheats, and postpones corresponding recovery time.Therefore, it can restart not reaching compressor Balance pressure condition in the state of, be continuously applied electric current to driving portion, be consequently for preventing the overload of the overload of motor from protecting Protection unit 107 is repeated a number of times movement.

On the contrary, 2A referring to Fig.1, in the case where the Rotary Compressor of the present embodiment is suitable for refrigerating circulatory device, when When compressor stops, exhaust pressure is temporarily reduced, and pressure of inspiration(Pi) temporarily rises.

At this moment, the movement that confirmation second flows to control piece 162, when by this second flow to control piece on the basis of, high-pressure side and When the pressure difference of low-pressure side is more than prescribed limit (substantially 1.5MPa), second, which flows to control piece 162, is remained off, and is worked as on the contrary Than prescribed limit hour, second flows to the opening of control piece 162.

Wherein, second control piece is flowed to according to its type, on the basis of flowing to control piece by second, high-pressure side and low-pressure side Between pressure difference very big (substantially 1.5MPa or more) in the case where, can not also open.It but be not very harsh Condition it is common under the conditions of, the major part of the pressure difference of two sides is within 1.5MPa, thus second flow to control piece can be Compressor is opened while stopping.

At this moment, second the opening of control piece 162 is flowed to, and to the second space being made of base bearing 122 and noise elimination part 14 A part of the refrigerant of 102 discharges is mobile to the suction side as low voltage section via bypass pipe 164, as a result, inside compressor Pressure of inspiration(Pi) Ps and exhaust pressure Pd be rapidly reached balance pressure condition.

At this point, work as user's driving refrigerating circulatory device, and when applying power supply to the driving portion of compressor, inside compressor Pressure difference has met balance pressure condition (usually within 0.05MPa), and therefore, compressor is directly operated again.As With reference to Figure 12 B is to show repeatedly to be switched on or off refrigerating circulatory device repeatedly within the time as illustrated in fig. 12, to test pressure The chart whether contracting machine restarts.

As shown, exhaust pressure (heavy line) moment reduction when the compressor is stopped, pressure of inspiration(Pi) keeps permanent after temporarily rising It is fixed.

At this point, second flows to control piece 162 and acted, bypass pipe 164 is opened, and to by leading on the basis of compression unit The a part for the refrigerant that the second space 102 that bearing 122 and noise elimination part 14 form is discharged is via bypass pipe 164 to liquid storage device 15 The 4th space 104 it is mobile, also, the exhaust pressure Pd inside compressor and sucking pressure Ps are rapidly reached balance pressure condition, as a result, Intermediate pressure (fine line) is formed by the second space 102 that base bearing 122 and noise elimination part 14 form.

As a result, as shown in the heavy line of Figure 12 B, more recurrent fluctuations of exhaust pressure Pd, and when compared with Figure 11 B, in phase In the same time, the compressor of the utility model executes repeatedly restarting.

As shown in the downside of Figure 12 B, when the supply of the electric flow direction motor of restarting, the most area in restarting Between form the supply of normal electric current, thus, it is possible to steadily be operated again.

It follows that pressure of inspiration(Pi) and exhaust pressure quickly form while compressor stops when refrigerating circulatory device stops Balance pressure enables the restarting of compressor swimmingly to realize, therefore, overload protection device is infrequently repeated It is switched on or switched off, so as to prevent the failure of overload protection device.Moreover, it can prevent from causing to drive because of overcompression Driving portion is impaired in turn for portion's overheat, so as to improve the reliability of compressor.

Figure 13 be the restarting of the Rotary Compressor of more existing Rotary Compressor and the utility model when The chart of quarter and stabilization step.In the case where being applicable in existing Rotary Compressor, as described above, being discharged from compressor Refrigerant via condenser, expansion valve, evaporator and recycled, therefore, in the state that compressor can restart, i.e., In order to meet pressure of inspiration(Pi) and the balance pressure condition (within pressure difference 0.05MPa) between pressing be discharged and required time (balance pressure Required time) it is many more than the utility model.As a result, existing Rotary Compressor at the time of capable of restarting than this reality There are many evening at the time of capable of being restarted with novel Rotary Compressor.Therefore, user is being applicable in existing rotary compression In the case where machine, even if thinking to operate refrigerating circulatory device again, but since compressor can not promptly restart, cause Refrigerating circulatory device can not be operated rapidly again, occur the problem of as illustrated in Figure 11 B as a result,.

On the contrary, in the present invention, as described above, stopping simultaneously, flowing to using bypass pipe 164 and second in compressor Control piece 162 implements balance pressure in advance, the time required to not needing individual balance pressure as a result, even if need, also relatively In the relevant technologies, the time is short.As a result, when user wants restarting refrigerating circulatory device, compressor can open rapidly again It is dynamic, so that refrigerating circulatory device can be very quickly into normal operation relative to the relevant technologies.Therefore, the wooden utility model phase Energy efficiency can be improved for the relevant technologies.

Also, in the steady load section of refrigerating circulatory device, the utility model, can be quick relative to the relevant technologies Ground enters the stabilisation stage.It follows that the refrigerating circulatory device for being applicable in Rotary Compressor of the utility model is relative to suitable With the refrigerating circulatory device of existing Rotary Compressor, energy efficiency can be improved.

In addition, the other embodiments for flowing to control piece for the second of the Rotary Compressor of the utility model, following institute It states.

That is, in the above-described embodiment, second flow to control piece and compressor be switched on or off linkage, thus automatically It is opened and closed, still, in the present embodiment, second flows to opening and closing moment of control piece to be switched on or off independence with compressor Mode controlled.

For example, second flows to control piece 162 and second flow to control piece 162 relative to compressor with this, independently controlled The mode of system is electrically connected with the valve control unit being separately provided relative to compressor control portion, thus, it is possible to relative to driving portion Independently controlled.

Whether the driving of driving portion can be confirmed in this valve control unit, when driving portion is driving, bypass pipe is closed 164, when driving portion stops, opening bypass pipe 164.

That is, in the above-described embodiment, second flows to control piece 162 when the electronic portion of compressor 1 stops, i.e. driving portion Stopping opens simultaneously bypass pipe 164, but the valve control unit of the present embodiment after driving portion stopping by the stipulated time, open other Siphunculus 164.Certainly, under 1 halted state of compressor, when bypass pipe 164 is not opened, first flows to the pressure of inspiration(Pi) of control piece 161 It is got higher relative to first exhaust pressure for flowing to control piece 161, from being unable to promptly close, as a result, to the of shell 11 The refrigerant of one space, 101 direction discharge is possible to inverse to 102 direction of second space being made of base bearing 122 and noise elimination part 14 Stream.It, can be in various ways according to operating condition but when second flows to control piece 162 and be connected to individual valve control unit Refrigerating circulatory device is controlled.

In addition, illustrating other for being in charge of position of the bypass pipe of the Rotary Compressor of the utility model referring to Fig. 2 to Fig. 5 Embodiment.

That is, in the above-described embodiment, the outlet end of bypass pipe is connected to the 4th space of liquid storage device, still, in this reality It applies in example, as shown in figure 4, the outlet end of bypass pipe 164 is connect with suction line 114.

In this case, according to from the second space 102 being made of base bearing 122 and noise elimination part 14 to suction line 114 It is directly connected to, further shortens the time required to balance pressure.It should be noted that being made of base bearing 122 and noise elimination part 14 The oil or liquid refrigerant that second space 102 is discharged flow directly into third space not via the 4th space 104 of liquid storage device 15 103, it is therefore preferable that for oil separating device or liquid refrigerant separator etc. is arranged in the arrival end of bypass pipe 164.

In addition, as shown in figure 5, the outlet end of bypass pipe 164 can also be connect with the entrance side of liquid storage device 15, i.e., with sucking Side refrigerant pipe L2 connection.

In this case, the outlet end of bypass pipe 164 can be connect with suction side refrigerant pipe L2, accordingly, with respect to The outlet end of bypass pipe 164 is connected to the 4th space 104 of liquid storage device 15, and the connection operation of bypass pipe is correspondingly easy.

In addition, as shown in figure 11, when compressor is that supplementary bearing is vented, the arrival end of bypass pipe 164 can also directly with Supplementary bearing connection, by the way of the connection of such as base bearing, 164 outlet end of bypass pipe is practicable such as above-mentioned various connection types.

In addition, in the above-described embodiment, the power operating including stopping only being executed although the description of Rotary Compressor Single operation mode but according to circumstances can also be suitable for other than above-described embodiment further including idle running in the same manner Multiple operation modes.

For example, when power operating is the state for driving compressor to generate pressure load, stopping is that compressor closes (0FF) And when removing the state of pressure load, although idle running is driven compressor, do not work, the shape that compression load is removed State.

Therefore, control piece, bypass pipe and the second traffic organising are flowed to being applicable in described in the above embodiments first When part, as needed, balance pressure shape can also be realized between the suction side and exhaust end of compression unit in the case where idle running State.

In addition, the refrigeration equipment of the utility model can also can be other air-conditionings for other than air-conditioning equipment above-mentioned Equipment, or other refrigeration equipments, such as refrigerator etc..

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model System.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down " It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into Row combination and combination.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model Inside it can make changes, modifications, alterations, and variations to the above described embodiments.

Claims (24)

1. a kind of compressor characterized by comprising

Shell, the shell is interior to have the first space；

Compression unit, the compression unit is interior to have third space, and the third space has suction inlet and discharge opening；

Noise elimination part, the noise elimination part is interior to have second space, and the second space is suitable for being connected to the third space；

First flows to control piece, and the described first inlet and outlet for flowing to control piece are respectively communicated with the second space and first sky Between, for fluid from the second space to first space one-way flow；

Driving portion, the driving portion are connected with the compression unit, and the driving portion is for driving the compression unit from the sucking Mouth pumps fluid to the discharge opening.

2. compressor according to claim 1, which is characterized in that the compressor further include:

Second flows to control piece, and described second flows to control piece is connected to the suction side of the compression unit and exhaust end respectively, institute Stating second, to flow to control piece convertible between the state of the suction side and exhaust end that separate and connect the compression unit.

3. compressor according to claim 1, which is characterized in that the compressor further include:

Third traffic organising part, the third traffic organising part are connected with the compression unit, and the third traffic organising part exists Switch on and off the third space convertible between the state of the second space.

4. compressor according to claim 3, which is characterized in that the compressor further include:

Second flows to control piece, and described second flows to control piece is connected to the suction side of the compression unit and exhaust end respectively, institute Stating second, to flow to control piece convertible between the state of the suction side and exhaust end that separate and connect the compression unit,

Wherein, described second one end for flowing to control piece is connected to described first and flows to control piece and the third traffic organising part Between, described second other end for flowing to control piece be connected to described first flow to control piece and the compression unit suction inlet it Between.

5. compressor according to claim 2 or 4, which is characterized in that

When the compression unit generates compression load, described second flows to control piece closing；

When removing the compression load in the compression unit, described second flows to control piece opening.

6. compressor according to claim 2 or 4, which is characterized in that described second flows to control piece and the driving portion Linkage, with the driving portion operation when described in second flow to control piece make the compression unit suction side and exhaust end disconnect, And when the driving portion stops described in second flow to control piece and connect the suction side of the compression unit with exhaust end.

7. compressor according to claim 2 or 4, which is characterized in that described second flows to control piece and the driving portion Start and/or simultaneously close off simultaneously.

8. compressor according to claim 2 or 4, which is characterized in that the compressor further include:

Test section, the test section and the driving portion signal, which transmit and detect described second, flows to control piece, in starting institute It states driving portion foregoing description test section and detects the described second state for flowing to control piece.

9. compressor according to claim 2 or 4, which is characterized in that the driving portion and described second flows to control piece It is controlled independently of each other.

10. compressor according to claim 2, which is characterized in that described second one end for flowing to control piece is connected to institute State second space.

11. the compressor according to claim 2 or 10, which is characterized in that the compressor further include:

Liquid storage device, the liquid storage device are connected to the suction inlet of the compression unit,

Wherein, described second other end for flowing to control piece is connected to the liquid storage device；Or described second flow to the another of control piece End is connected to the pipeline between the liquid storage device and the compression unit.

12. compressor according to claim 2 or 4, which is characterized in that described second, which flows to control piece, is placed outside the shell Body, the compressor further include:

Bypass pipe, described second flows to suction side and the exhaust end that control piece is respectively communicated with the compression unit, and the bypass pipe Control piece is flowed to described second to concatenate.

13. compressor according to claim 2, which is characterized in that if the suction side of the compression unit and exhaust end it Between pressure difference be not less than a reference value, described second, which flows to control piece, connects the suction side of the compression unit with exhaust end, and The driving portion delay start.

14. compressor according to claim 13, which is characterized in that a reference value is not more than 1.5MPa；Or the base Quasi- value is not less than 0.05MPa.

15. compressor according to claim 3 or 4, which is characterized in that described first flows to control piece and the third stream To control piece structure having the same.

16. compressor according to claim 1, which is characterized in that the driving portion, the compression unit, the noise elimination part And described first flow at least one of control piece and be disposed in the housing.

17. compressor according to claim 1, which is characterized in that the compression unit includes:

Roller；

Cylinder body, the cylinder body is around the roller, and the two sides of the cylinder body in the axial direction are respectively by base bearing and supplementary bearing Closing forms third space between the cylinder body and the roller；

Baffle, the baffle are telescopically located on the roller, and the baffle abuts the cylinder body with the roller respectively Inner peripheral surface is to be divided into suction chamber and compression chamber for the third space；

Shaft, the shaft are connected to drive the roller rotation to calm the anger with the roller, and the shaft runs through the base bearing,

Wherein, the driving portion is connected with the shaft, and the noise elimination part is the cover board being covered on the base bearing.

18. compressor according to claim 17, which is characterized in that the base bearing includes:

Main part, the main part close the cylinder body；

Extension, the extension extend along the axis of the compression unit towards the direction far from the compression unit；

Wherein, the shaft passes through the main part and connects the roller, and the extension is socketed on the shaft outer peripheral surface, The noise elimination part is arranged around the extension.

19. compressor according to claim 18, which is characterized in that the outer peripheral surface of the extension is with multi-diameter shaft shape Shape, the inner edge of the noise elimination part are resisted against at the step of the extension.

20. according to claim 1, compressor described in any one of 17-19, which is characterized in that the noise elimination part is covered on institute The discharge opening is stated on compression unit and covers, the noise elimination part and the compression unit cooperatively form the second space.

21. compressor according to claim 20, which is characterized in that the noise elimination part interference fit connection compresses connection Or the compression unit is tightly connected by sealing ring.

22. compressor according to claim 1, which is characterized in that the noise elimination part is installed on first traffic organising On part.

23. compressor according to claim 22, which is characterized in that the noise elimination part and described first flows to control piece spiral shell Line connection, screw are connected, are bolted, are welded to connect or are at least partly integrally formed.

24. a kind of refrigerating plant characterized by comprising compressor, First Heat Exchanger and the second heat exchanger, the compressor, The First Heat Exchanger and second heat exchanger connect into circulation loop, and the compressor is according in claim 1-23 Described in any item compressors.