CN209523874U - Low-pressure shell double-cylinder horizontal rotary compressor and refrigerating circulatory device with it - Google Patents

Abstract

The utility model discloses a kind of low-pressure shell double-cylinder horizontal rotary compressor and with its refrigerating circulatory device.Low-pressure shell double-cylinder horizontal rotary compressor includes the shell, electric motor and the compression mechanical part driven by electric motor of the low pressure of sealing, shell is equipped with air intake duct and exhaust pipe, electric motor and compression mechanical part are accommodated in shell, and lubricating oil is also accommodated in shell；Compression mechanical part includes the 1st bearing, the 1st cylinder, middle partition, the 2nd cylinder and the 2nd bearing that sequence is placed；The pressure of the silencing cavity of middle diaphragm internal configuration is high pressure, and the high-voltage tube connecting with silencing cavity is connected to exhaust pipe.According to the low-pressure shell double-cylinder horizontal rotary compressor of the utility model embodiment, exhaust noise can be lowered, realize lightweight and densification.

Description

Low-pressure shell double-cylinder horizontal rotary compressor and refrigerating circulatory device with it

Technical field

The utility model relates to compressor fields, more particularly, to a kind of low-pressure shell double-cylinder horizontal rotary compressor and tool There is its refrigerating circulatory device.

Background technique

On-board air conditioner or vehicle-mounted refrigerating equipment generally use Horizontai rotary compressor.The electric car of the relevant technologies needs When refrigeration, compressor unlatching is freezed using the refrigerant circulation of air-conditioning.When needing to heat, stop compressor, is added using ceramics Hot device.In heating operation, the battery consumption rate of electric car is got higher, the traveling sharp fall of automobile.In the related technology Horizontai rotary compressor volume is larger, is not easy to the inside arrangement of electric car.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.

For this purpose, exhaust noise can be lowered the utility model proposes a kind of low-pressure shell double-cylinder horizontal rotary compressor, it is real Existing lightweight and densification.

The utility model also proposes a kind of refrigerating circulatory device with above-mentioned low-pressure shell double-cylinder horizontal rotary compressor.

According to the low-pressure shell double-cylinder horizontal rotary compressor of the utility model embodiment, the shell of the low pressure including sealing Body, electric motor and the compression mechanical part driven by the electric motor, the shell is equipped with air intake duct and exhaust pipe, described Electric motor and the compression mechanical part are accommodated in the shell, are also accommodated with lubricating oil in the shell；The compressor Structure portion includes the 1st bearing, the 1st cylinder, middle partition, the 2nd cylinder and the 2nd bearing that sequence is placed；The middle diaphragm internal configuration The pressure of silencing cavity be high pressure, the high-voltage tube connecting with the silencing cavity is connected to the exhaust pipe.

According to the low-pressure shell double-cylinder horizontal rotary compressor of the utility model embodiment, exhaust noise can be lowered, it is real Existing lightweight and densification.

In some embodiments of the utility model, the silencing cavity, which has, is being respectively arranged at the 1st cylinder and institute State the exhaust valve of the gas vent of aperture on the compression chamber of the 2nd cylinder, the switch gas vent.

In some embodiments of the utility model, it is respectively arranged at the slide plate of the 1st cylinder and the 2nd cylinder The aperture in the silencing cavity of the one end in back hole, the other end in the back hole is respectively by the 1st bearing and the 2nd axis Hold sealing.

In some embodiments of the utility model, pass through the gas tap hole and the compression mechanical part of the exhaust pipe Between the partition that configures, the inside of the shell is divided into high pressure chest and low pressure chamber, and the high-voltage tube aperture is in the high pressure On chamber.

In some embodiments of the utility model, the periphery of the middle partition is logical configured with the first gas of low-pressure gas The periphery of road and grease channel, the middle partition is fixed in the inner circumferential of the shell.

In some embodiments of the utility model, the other end and configuration of the aperture in the oil fuel tube of the high pressure chest bottom It is connected in the injection hole of the 1st bearing, the lubricating oil of the high pressure chest is injected into the 1st compression chamber of the 1st cylinder.

In some embodiments of the utility model, low-pressure shell double-cylinder horizontal rotary compressor further includes gas-liquid separation Plate, the gas-liquid separation plate are located at the outside for the crankshaft being fixed on the rotor of the electric motor, and the air intake duct is to described The centre bore aperture of gas-liquid separation plate flows into the refrigerant of the air intake duct into the electrical-coil configured on the electric motor It disperses side.

In some embodiments of the utility model, it is fixed on the oily diffusion preventing plate of the 2nd bearing, storage can be reduced In the shaking of the lubricating oil of the housing bottom.

In some embodiments of the utility model, the control of the electric motor is carried in the outer surface of the shell Equipment.

According to the refrigerating circulatory device of the utility model embodiment, it is equipped with according to the low of the utility model above-described embodiment Pressure shell body double-cylinder horizontal rotary compressor.

According to the refrigerating circulatory device of the utility model embodiment, rotated by being equipped with above-mentioned low-pressure shell double-cylinder horizontal Compressor can lower exhaust noise, realize lightweight and densification.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the schematic diagram according to the air-conditioning equipped with rotary compressor of some embodiments of the utility model；

Fig. 2 is the sectional view according to the rotary compressor of some embodiments of the utility model；

Fig. 3 is the sectional view of X-direction in Fig. 2；

Side view when Fig. 4 A is the cooperation according to the crankshaft of the utility model embodiment, gas-liquid separation plate and air intake duct；

Top view when Fig. 4 B is according to the cooperation of the gas-liquid separation plate of the utility model embodiment and air intake duct；

Fig. 5 is the sectional view of Y-direction in Fig. 2；

Fig. 6 is the sectional view of Z-direction in Fig. 2；

Fig. 7 is the sectional view according to the rotary compressor of the other embodiment of the utility model embodiment；

Fig. 8 is the longitudinal section of rotary compressor shown in Fig. 7；

Fig. 9 is the schematic diagram according to the air-conditioning equipped with rotary compressor of the utility model other embodiments.

Appended drawing reference:

Rotary compressor 1, four-way valve 63, A heat exchanger 60, expansion valve 61, B heat exchanger 62, air intake duct 6,

Control equipment 64,

Shell 2, cylindrical plate 2a, low pressure plate 2b, partition 2d, hardboard 2c,

Compression mechanical part 10, crankshaft 30, centre bore 31, oilhole 31a, the 1st cylinder 11, the 1st compression chamber 11a, the 2nd cylinder 21, the 2nd compression chamber 21a, the 1st suction hole 12, the 2nd suction hole 22, the 1st bearing 35, cylindrical cover 37, fuel sucking pipe 37a, middle partition 40, plectane 40b, the 2nd bearing 36, the 1st piston 15, the 2nd piston 25, gas passage 45, grease channel 46, silencing cavity 41, row Air-valve device 43B, discharge valve apparatus 43A, gas vent 44, exhaust valve 43b, valve retainer 43b, cylinder screw nail hole 48, cylinder spiral shell Adjusting screw 49, gas passage 45, the 1st slide plate back hole 13a, the 2nd slide plate back hole 23a,

Motor 3, power supply terminal 9, stator 4, rotor 5, circumferential groove 4b (4c), rivet 5a,

Oily disengagement chamber 38, oil fuel tube 38a

High-voltage tube 18, exhaust pipe 7,

Centrifugal pump 53,

Low pressure lubricating oil 8a,

Oily diffusion preventing plate 55, oil eliminator 65, injection loop 68.

Specific embodiment

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, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

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, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

The low-pressure shell double-cylinder horizontal rotary compressor 1 according to the utility model embodiment is described below with reference to Fig. 1-Fig. 9, Wherein low-pressure shell double-cylinder horizontal rotary compressor 1 can be applied on vehicle on such as electric car.Low-pressure shell twin-tub is sleeping R32 refrigerant can be used in formula rotary compressor 1.

As shown in Figure 2 and Figure 7, according to the low-pressure shell double-cylinder horizontal rotary compressor 1 of the utility model embodiment, including Shell 2, electric motor 3 and the compression mechanical part 10 driven by electric motor 3 of the low pressure of sealing, shell 2 are equipped with air intake duct 6 With exhaust pipe 7, electric motor 3 and compression mechanical part 10 are accommodated in shell 2, are also accommodated with lubricating oil in shell 2.It is understood that , electric motor 3 includes stator 4 and rotor 5, and compression mechanical part 10 includes crankshaft 30, and rotor 5 is fixed on crankshaft 30 to drive Dynamic crankshaft 30 rotates.

Compression mechanical part 10 includes the 1st bearing 35, the 1st cylinder 11, middle partition 40, the 2nd cylinder 21 and the 2nd that sequence is placed Bearing 36.In Fig. 2 and example shown in Fig. 7, on the axial direction towards close electric motor 3, the 1st bearing 35, the 1st vapour Cylinder 11, middle partition 40, the 2nd cylinder 21 and the 2nd bearing 36 are sequentially arranged.

The pressure of the silencing cavity 41 configured inside middle partition 40 is high pressure, the high-voltage tube 18 connecting with silencing cavity 41 and exhaust Pipe 7 is connected to.That is, being equipped with silencing cavity 41 inside middle partition 40, silencing cavity 41 is equipped with high-voltage tube 18, from the 1st cylinder 11 and/ Or the 2nd cylinder 21 be discharged high pressure gas be drained into silencing cavity 41, the high pressure gas in silencing cavity 41 pass through 18 row of high-voltage tube Out and exhaust pipe 7 is flowed to, shell 2 is discharged by exhaust pipe 7 in high pressure gas.

It follows that can not only play the mesh for reducing exhaust noise by the way that silencing cavity 41 to be located inside middle partition 40 , it is also possible that compressor inner structure arrangement is compact, amount of parts is reduced, realizes lightweight and densification.While by It is low-pressure shell in shell 2, the temperature of shell 2 is lower, so as to which remaining components of vehicle are placed on beside compressor Without being affected, such as the control equipment for controlling electric motor 3 and air-conditioning can be located on shell 2.It is practical new at this In some specific examples of type, the control equipment of electric motor 3 is carried in the outer surface of shell 2.

According to the low-pressure shell double-cylinder horizontal rotary compressor 1 of the utility model embodiment, exhaust noise can be lowered, it is real Existing lightweight and densification.

In some embodiments of the utility model, silencing cavity 41, which has, is being respectively arranged at the 1st cylinder 11 and the 2nd The exhaust valve of the gas vent of aperture, switch gas vent on the compression chamber of cylinder 21.Specifically, silencing cavity 41 has to the 1st vapour The gas vent of 11 aperture of cylinder and gas vent to 21 aperture of the 2nd cylinder, each gas vent are equipped with its exhaust valve of switch, thus The high pressure gas being discharged from the 1st cylinder 11 and the 2nd cylinder 21 is discharged into silencing cavity 41, and the structure that compressor can be improved is tight Gathering property.

In some embodiments of the utility model, as shown in fig. 7, being respectively arranged at the 1st cylinder 11 and the 2nd cylinder 21 One end aperture in silencing cavity 41 in the back hole of slide plate, the other end in back hole are close by the 1st bearing 35 and the 2nd bearing 36 respectively Envelope.Specifically, the 1st cylinder 11 has the 1st slide plate back hole 13a, the 2nd cylinder 21 has the 2nd slide plate back hole 23a, and the 1st is sliding One end aperture in silencing cavity 41 respectively of piece back hole 13a and the 2nd slide plate back hole 23a, the 1st slide plate back hole 13a's is another One end is sealed by the 1st bearing 35, and the other end of the 2nd slide plate back hole 23a is sealed by the 2nd bearing 36.High pressure in silencing cavity 41 Lubricating oil in gas is flowed into the 1st slide plate back hole 13a and the 2nd slide plate back hole 23a to lubricate slide plate, is flowed into simultaneously The lubricating oil of 1st slide plate back hole 13a and the 2nd slide plate back hole 23a can be flowed into the 1st cylinder 11 the 1st compression chamber 11a and 2nd compression chamber 21a of the 2nd cylinder 21.

As shown in Figure 2 and Figure 7, in some embodiments of the utility model, pass through the gas tap hole and pressure of exhaust pipe 7 The partition 2d configured between contracting mechanism part 10, the inside of shell 2 are divided into high pressure chest 38 and low pressure chamber, 18 aperture of high-voltage tube in On high pressure chest 38.Specifically, partition 2d is located between the gas tap hole of exhaust pipe 7 and compression mechanical part 10, and high-voltage tube 18 can To be located on partition 2d, the high pressure gas being discharged from high-voltage tube 18, which can be drained into high pressure chest 38, carries out Oil-gas Separation, passes through Refrigerant after Oil-gas Separation is discharged from exhaust pipe 7, i.e., high pressure chest 38 can be formed as oily disengagement chamber.So as to reduce compressor Oil spitting amount, exhaust gas pulses sound can also be reduced.

In some embodiments of the utility model, as shown in figure 3, the periphery of middle partition 40 configured with low-pressure gas the The periphery of one gas passage 45 and grease channel 46, middle partition 40 is fixed in the inner circumferential of shell 2.So that low-pressure shell The structure of double-cylinder horizontal rotary compressor 1 is simple.

As shown in Figure 2 and Figure 7, some embodiments according to the present utility model, aperture is in the oil fuel tube of 38 bottom of high pressure chest The other end of 38a is connect with the injection hole 38b for being configured at the 1st bearing 35, and the lubricating oil of high pressure chest 38 is injected into the 1st cylinder 11 In 1st compression chamber 11a.Specifically, with the rotation for the 1st piston 15 being located in the 1st compression chamber 11a, 38 bottom of high pressure chest Lubricating oil can be entered in the 1st compression chamber 11a by oil fuel tube 38a, convenient for being lubricated to elements such as pistons.

In some embodiments of the utility model, as shown in Fig. 2, Fig. 4 A, Fig. 4 B and Fig. 7, low-pressure shell double-cylinder horizontal Rotary compressor 1 further includes gas-liquid separation plate 50, and gas-liquid separation plate 50 is located at the crankshaft on the rotor 5 for being fixed on electric motor 3 30 outside, centre bore aperture of the air intake duct 6 to gas-liquid separation plate 50, the refrigerant for flowing into air intake duct 6 are matched on electric motor 3 It disperses on the inside of the electrical-coil 4a set.To which by setting gas-liquid separation plate 50, gas-liquid separation plate 50 has gasification of liquid refrigerant Effect and isolate the effect of lubricating oil from sucking gas.

As shown in fig. 7, it is fixed on the oily diffusion preventing plate 55 of the 2nd bearing 36 in some embodiments of the utility model, The shaking for being stored in the lubricating oil of 2 bottom of shell can be reduced.There is lubricating oil decrement so as to reduce compression mechanical part side Situation occurs.

According to the refrigerating circulatory device of the utility model embodiment, including the low pressure according to the utility model above-described embodiment Shell double-cylinder horizontal rotary compressor 1.

According to the refrigerating circulatory device of the utility model embodiment, rotated by being equipped with above-mentioned low-pressure shell double-cylinder horizontal Compressor 1 can lower exhaust noise, realize lightweight and densification.

Below with reference to Fig. 1-Fig. 9 description according to the rotary compressor of three specific embodiments of the utility model.

Embodiment 1:

Fig. 1 is that low-pressure shell double-cylinder horizontal rotary compressor 1 (hereinafter referred to as rotary compressor 1) and the compressor connect The refrigeration cycle of the air-conditioning connect.The high pressure gas being discharged from the exhaust pipe for being configured at 1 side of rotary compressor, via four-way valve 63, after the condensation of A heat exchanger 60, is expanded in expansion valve 61, become low pressure；The low-pressure gas evaporated in B heat exchanger 62, then It is secondary to be flowed into the enclosure interior of rotary compressor 1 from air intake duct 6 by cubic valve 63.Therefore, the internal pressure of rotary compressor 1 is Low pressure.

By the switching of four-way valve 63, after the high pressure gas being discharged from exhaust pipe condenses in B heat exchanger 62, in expansion valve It is expanded in 61, becomes low pressure；The low-pressure gas evaporated in A heat exchanger 60 flows into again via cubic valve 63 from air intake duct 6 The enclosure interior of rotary compressor 1.Therefore, the internal pressure of rotary compressor 1 is low pressure.So, the refrigeration cycle of Fig. 1 is led to Reversible Cycle is crossed, refrigeration and heating can be switched freely.

The control equipment 64 (dotted line) of the upper end configuration of rotary compressor 1, is that driving and control are configured at rotary compressor 1 The equipment of internal variable-frequency motor, and include the control of refrigeration cycle.The electric motor being configured inside control equipment 64 Components fever is controlled, so, case temperature needs to be room temperature low temperature below.Therefore, the compressor of EV (electric car) Inside needs to be low pressure.

Fig. 2 is the sectional view of rotary compressor 1.The longitudinal section X of Fig. 2 is as shown in figure 3, longitudinal section Y is cut as shown in figure 5, indulging Face Z is as shown in Figure 6.In Fig. 2, cylindrical shell 2 is made of 4 steel plate components, is storage 10 He of compression mechanical part respectively The cylindrical plate 2a of motor 3, positioned at its right side opening nose end and configured with electric motor 3 power supply terminal 9 low pressure plate 2b, welding In on the left side aperture face of cylindrical plate 2a and configure oil fuel tube 38a partition 2d, the hardboard 2c welded with partition 2d complete cycle.

The chamber to be formed is surrounded by hardboard 2c and partition 2d, constitutes oily disengagement chamber 38.Oily disengagement chamber 38 is described later The front end of high-voltage tube 18 and the rear end aperture of exhaust pipe 7.The oily disengagement chamber 38 of high pressure has recycling from the row of high-voltage tube 18 The oily separation function of oil mass and the function of reducing exhaust gas pulses sound.So, the inside of shell 2 is divided into two by partition 2d Part is made of the high pressure chest (i.e. following oily disengagement chambers 38) of the low pressure chamber of large capacity and low capacity.

Motor 3 is the concentration rolling variable-frequency motor of compact, high output, by be fixed on 2 inner circumferential of shell stator 4, It is constituted with the rotor 5 on the crankshaft 30 for being fixed on compression mechanical part 10, it can be by compression mechanical part 10 in 10rps~120rps or most Switch rotational speed freely between big 140rps.

The periphery of stator 4 is configured with 4 circumferential grooves, based on wherein 3 circumferential groove 4b, becomes the channel of low-pressure gas, The circumferential groove 4c for being configured at bottommost becomes the channel of low pressure lubricating oil 8a.Rotor 5 passes through the rivet 5a of 4 perforations, is fixed In on electromagnetic steel plate；Moreover, by these rivets 5a, on the left end for the electromagnetic steel plate that round centrifugal pump 53 is fixed on lamination. A small amount of balance weight at 5 both ends of rotor is configured, its diagram is omitted.

Centrifugal pump 53 is the slim cylindrical plate in 6~10 internal configuration cavity, its periphery configuration round holes, passes through centrifugal pump 53 turn round simultaneously with rotor 5, reduce internal pressure.The inner space of centrifugal pump 53, with configuration on the centre bore 31 of crankshaft 30 Two oilhole 31a connection.

On the 1st compression chamber 11a and the 2nd compression chamber 21a for being respectively arranged at the 1st cylinder 11 and 21 center of the 2nd cylinder, the 1 suction hole 12 and 22 aperture of the 2nd suction hole.Cylindrical cover 37, cylinder are pressed into the bearing protrusion for being configured at 35 center of the 1st bearing The inner face of lid 37 is connect with fuel sucking pipe 37a, and fuel sucking pipe 37a lower end aperture is in the low pressure lubricating oil 8a stored in 2 bottom of shell.

Compression mechanical part 10, center are configured with middle partition 40 (also referred to as demarcation plate), in the 1st cylinder 11 of its two sides configuration With the 2nd cylinder 21, the 1st bearing 35 being connect with these and the 2nd bearing 36, above-mentioned two cylinder center configuration the 1st pressure Contracting chamber 11a and the 2nd compression chamber 21a, which is respectively configured, drives eccentric the 1st piston 15 and the 2nd piston 25 turned round by crankshaft 30.It is bent The outer diameter of axis 30 is slidably matched with the 1st bearing 33 and the 2nd bearing 36.

In aperture in the left front end of crankshaft 30, in the horizontal direction on the centre bore 31 that extends, in 36 bearing end of the 2nd bearing and Two oilhole 31a opposite direction apertures of the gap configuration of 5 recess portion of rotor.As described above, two oilhole 31a, and connect in centrifugal pump 53 It is logical.

Therefore, by the revolution of rotor 5 and crankshaft 30, low pressure lubricating oil 8a from cylindrical cover 37, is worn via fuel sucking pipe 37a Centre bore 31 is crossed, by oilhole 31a, is distributed to its outside from the inside of centrifugal pump 53.It, can by the flowing of low pressure lubricating oil 8a It is lubricated with full sliding part, the 1st piston 15 and the 2nd piston 25 to crankshaft 30.

As shown in figure 3, middle partition 40 is made of the panel (two plectane 40b) of two segmentations, there are three periphery configurations the One gas passage 45, its periphery bottom are configured with a grease channel 46.The silencing cavity constituted among two above-mentioned plectanes In 41, two groups of discharge valve apparatus 43B and discharge valve apparatus 43A (Fig. 2) are configured on panel.Discharge valve apparatus 43B, configured with opening Gas vent 44, exhaust valve 43b and valve retainer 43b on 2 compression chamber 21a of Kong Yu are fixed to middle partition 40 by rivet 44b On.

On the panel and silencing cavity 41 of two segmentations, after the assembling for completing above-mentioned two discharge valve apparatus, middle partition 40 with 1st cylinder 11 and the 2nd cylinder 21, the 1st bearing 35 and the common aligning assembling of the 2nd bearing 36, by being inserted into five cylinder screws The cylinder screw 49 (Fig. 2 and Fig. 3) in hole 48 completes compression mechanical part 10.The height of second gas channel (45) and Fig. 2 of Fig. 3 Pressure pipe 18 is connected to.

After completing compression mechanical part 10, the hot pressing rotor 5 on the crankshaft 30 of compression mechanical part 10.Thereafter, the outer diameter of rotor 5 With the internal diameter aligning of stator 4, cylindrical plate 2a is inserted into from 4 side hot pressing of stator, by four electric arc spot weldings 47, middle partition 40 it is outer Week is fixed to the inner circumferential of cylindrical plate 2a.Thereafter, low pressure plate 2b and demarcation plate 2d is welded on cylindrical plate 2a internal diameter, in demarcation plate 2d Periphery weld hardboard 2c.During its, it is separated the welding of plate 2d, high-voltage tube 18 and oil fuel tube 38a.

Next, being based on Fig. 2, illustrate the flowing of the cold media gas and lubricating oil when steady running.Shell is flowed into from air intake duct 6 The amount and speed of the low-pressure gas of body 2, it is proportional to the rotational speed of rotor 5, about 1% profit is typically contained in low-pressure gas The liquid refrigerants of lubricating oil sum number %.About 1% lubricating oil, is equably dissolved into cold media gas, is formed spraying.

Whole low-pressure gases are flowed into the rotary type gas-liquid separation plate 50 (Fig. 4 A and Fig. 4 B) for being fixed on 30 shaft end of crankshaft Meanwhile being dispersed by centrifugal force to electrical-coil 4a, while cooling down electrical-coil 4a, the big liquid refrigerants overheat of quality becomes For gas.Lubricating oil is recovered on electrical-coil 4a, and part of it falls on the bottom of shell 2.

As a result, low-pressure gas is distributed to configuration in three circumferential groove 4b of 4 periphery of stator, and pass through electrical-coil 4a Gap, be moved between compression mechanical part 10 and motor 3.Meanwhile about 50% gas coolant, be taken directly aperture In the 2nd suction hole 22 of the 2nd cylinder 21.

Remaining about 50% low-pressure gas is inhaled by configuring the first gas passage 45 (Fig. 5) on middle partition 40 Enter to aperture in the 1st suction hole 12 of the 1st cylinder 11.First gas passage 45 has enough perforated areas, so by the 2nd The amount of suction hole 22 and the low-pressure gas of the 1st suction hole 12 sucking is without too big difference.

The a small amount of lubricating oil for falling on 2 bottom of shell, via the grease channel of circumferential groove 4c, under compression mechanical part 1 The low pressure oil storage chamber 8a that portion is constituted is mobile.So, gas-liquid separation plate 50 have the function of gasification of liquid refrigerant and from sucking Gas isolates the effect of lubricating oil.

As shown in Figure 5 and Figure 6, the oiling groove as shown by dashed lines on the 1st suction hole 12 and the 2nd suction hole 22 respectively 35a and oiling groove 36a is respectively arranged on the bearing surface of piston of the 1st bearing 35 and the bearing surface of piston of the 2nd bearing 36 Slot, these all distinguish aperture on the internal diameter of above-mentioned piston.

A part of the lubricating oil of the 1st piston 15 and 25 internal diameter of the 2nd piston is flowed into from the centre bore 31 of crankshaft 30, via The oiling groove 35a (Fig. 5) for being configured at 35 surface of the 1st bearing and oiling groove 36a (Fig. 6) for being configured at 36 surface of the 2nd bearing, respectively About 0.5% lubricating oil (ratio in refrigerant) is flowed into the low pressure chamber of the 1st compression chamber 11a and the 2nd compression chamber 21a.It is above-mentioned The reference dimension of two oiling grooves is wide 1.5mmX depth 0.5mm.

So, it is drawn into the low-pressure gas of compression chamber and is mixed into lubricating oil, be low-pressure shell formula rotary compressor Common sense needs the high pressure gas leakage from piston external diameter Yu compression chamber internal diameter gap and the profit of slide plate front end and piston external diameter It is sliding.

As the replacement means of oiling groove 35a and oiling groove 36a, the 1st suction hole 12 and the 2nd air-breathing will be connected to by having The capillary lower end in hole 22 is directly connected to the method in the oil of low pressure oil storage chamber 8a.

The gas for becoming high pressure in the 1st compression chamber 11a and the 2nd compression chamber 21a, from two of configuration on middle partition 40 Gas vent 44 is discharged to the silencing cavity 41 of middle partition 40.In its discharge, as described above, containing total 0.5%+0.5%= About 1% lubricating oil.The high pressure gas of silencing cavity 41 is discharged to oily disengagement chamber 38 via high-voltage tube 18.

The volume of oily disengagement chamber 38 is defined, and with the duration of runs of compressor, the store oil amount of oily disengagement chamber 38 increases, oil After face is got higher, oily separative efficiency decline, about 1% be mixed into from the high pressure gas that silencing cavity 41 is discharged becomes from exhaust pipe 7 The oil drain quantity of circularly cooling circulation.

Oil fuel tube 38a of the aperture in the oil of high pressure oil storage chamber 8b, with the injection hole 38b for being configured at the 1st compression chamber 11a (Fig. 5, Fig. 2) connection.Injection hole 38b, as the revolution of the 1st piston 15 switchs, it is ensured that in the lubrication of high pressure oil storage chamber 8b Oil flows out in the medium pressure gas in the 1st compression chamber 11a compression process via oil fuel tube 38a.

Thereafter, injection hole 38b is closed with the revolution of the 1st piston 15, and oiling stops.The movement, referred to as oiling (profit Lubricating oil injection).That is, being to set up oiling 1 time with the revolution of the 1st piston 15 every time.

In embodiment 1, after setting 1 injection rate as about the 1% of air-breathing refrigerant, including above-mentioned about 1%, to middle partition Total oil drain quantity increase about 2% of 40 silencing cavity 41.As a result, being from the lubricating oil that silencing cavity 41 is discharged to oily disengagement chamber 38 About the 2% of refrigerant oil drain quantity, therein about 1% can be used in the lubrication of slide plate 13 and slide plate 23.

Fig. 7 is the sectional view for showing the compressor 1 of above-mentioned two slide plate.Lubricating oil in the high pressure gas of silencing cavity 41 The a part of (about the 2% of cold media gas), is flowed into the 1st slide plate back hole 13a and the 2nd slide plate back hole 23a, by with slide plate While the hot pressing gap (about 5 μm of unilateral gap) of horizontal side etc. lubricates slide plate sliding surface, the 1st compression chamber 11a and the 2nd is flowed out to In compression chamber 21a.

But whole lubricating oil of above-mentioned two compression chamber are flowed out to, it is mixed into the gas of compression chamber, again returns to In silencing cavity 41, so the lubrication amount of silencing cavity 41 does not change.That is, being disappeared by the way that above-mentioned slide plate back hole to be connected to On sound chamber, slide plate lubrication is set up, from oil exit pipe 7 to the variation of the oil drain quantity of refrigeration cycle no more than about 1%.Moreover, oiling is arrived In gas coolant in compression process, compression efficiency will not be impacted.

The sliding surface lubrication of the function of oily disengagement chamber 38, two slide plates is purpose, is often recycled between muffler 41 It is purpose, therefore, is not influenced reducing the internal volume of oily disengagement chamber 38.

So, as described in Example 1, in configuration the high pressure silencing cavity 41 of partition 40 design, with previous 1st bearing Discharge valve apparatus is respectively configured with the 2nd bearing to compare with the design of high pressure muffler, it is advantageous that: (1) in silencing cavity 41 Lubricating oil in high pressure gas is flowed into the 1st slide plate back hole 13a and the 2nd slide plate back hole 23a to lubricate slide plate, is flowed simultaneously Enter to the lubricating oil of the 1st slide plate back hole 13a and the 2nd slide plate back hole 23a to be flowed into the 1st compression chamber of the 1st cylinder 11 The 2nd compression chamber 21a of 11a and the 2nd cylinder 21, lubricating oil are mixed into the gas of compression chamber, again return to high pressure silencing cavity In 41, the recycling of slide plate lubricating oil is realized, (2) to avoid high pressure gas leakage, can realize densification and the lightweight of compressor, (3) cost is reduced, convenient for manufacture.

Embodiment 2:

Shown in Fig. 7, inside the low pressure chamber of shell 2, by motor 3 and compression mechanical part 10, there are three chambers for configuration.Also Be, right-side cavity A, motor 3 between motor 3 and low pressure plate 2b and the middle separate space B between middle partition 40, middle partition 40 and every Left side cavity C between plate 2d.

The low-pressure gas sucked from air intake duct 6, according to? There is pressure difference in three chambers.It is, in the pressure > of right-side cavity A the pressure > left side cavity C of separate space B pressure.

The fuel head of the low pressure oil storage chamber 8a of shell 2 is separate space < left side cavity in right-side cavity <, and therefore, optimal selection is The oil supplying hole aperture of fuel sucking pipe 37a is in the lower part of left side cavity C.The compressor being carried in vehicle-mounted equipment is set by vehicle-mounted Standby inclination is not in the risk of left side cavity C lubrication oil starvation.

But for example, vehicle is in the case where sharply accelerating or being a significant slowdown, lubricating oil moves in shell 2.Such case Under, the phenomenon that lubricating oil of left side cavity C will appear decrement.As the countermeasure of the project, in embodiment 2, under the 2nd bearing 36 The additional oily diffusion preventing plate 55 in end.

Fig. 8 is the oily diffusion preventing plate 55 that therefrom separate space B sees.Oily diffusion preventing plate 55, it is fixed by cylinder screw 49 Onto the 2nd bearing 36.Therefore, middle separate space B is divided into two by oily diffusion preventing plate 55, it is therefore possible to prevent when sharply accelerating, A large amount of lubricating oil flows out to middle separate space B chamber from left side cavity C, finally flows out to right-side cavity A.

Embodiment 3:

Low-pressure shell double-cylinder horizontal rotary compressor 80 shown in Fig. 9, design are to omit oily disengagement chamber shown in Fig. 2 38, additional oil eliminator 65 and injection loop 68 on the exhausting loop of above-mentioned compressor.Because hardboard 2c is not used, Demarcation plate 2d becomes sealing plate, and the inside of shell 2 all becomes low pressure chamber.

Embodiment 3, compared with embodiment 1 or 2, oil eliminator 65 becomes replacing the means of oily disengagement chamber 38, and advantage exists In existing or commercial type oil eliminator 65 can be directlyed adopt.The component number and design cost of cooling cycle system increase As project, judged in the commodity enterprise planning stage.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective And modification, the scope of the utility model are defined by the claims and their equivalents.

Claims (10)

1. a kind of low-pressure shell double-cylinder horizontal rotary compressor, which is characterized in that shell, the electric motor of the low pressure including sealing With the compression mechanical part driven by the electric motor, the shell be equipped with air intake duct and exhaust pipe, the electric motor and The compression mechanical part is accommodated in the shell, is also accommodated with lubricating oil in the shell；

The compression mechanical part includes the 1st bearing, the 1st cylinder, middle partition, the 2nd cylinder and the 2nd bearing that sequence is placed；

The pressure of the silencing cavity of the middle diaphragm internal configuration is high pressure, the high-voltage tube connecting with the silencing cavity and the exhaust Pipe connection.

2. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that the silencing cavity has The row of the gas vent of aperture, the switch gas vent on the compression chamber for being respectively arranged at the 1st cylinder and the 2nd cylinder Air valve.

3. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that be respectively arranged at described One end aperture in the silencing cavity in the back hole of the slide plate of the 1st cylinder and the 2nd cylinder, the other end in the back hole Respectively by the 1st bearing and the 2nd bearing seal.

4. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that pass through the exhaust pipe Gas tap hole and the compression mechanical part between the partition that configures, the inside of the shell is divided into high pressure chest and low pressure Chamber, the high-voltage tube aperture is on the high pressure chest.

5. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that outside the middle partition Week is configured with the first gas passage and grease channel of low-pressure gas, and the periphery of the middle partition is fixed on the interior of the shell Zhou Shang.

6. low-pressure shell double-cylinder horizontal rotary compressor according to claim 4, which is characterized in that aperture is in the high pressure The other end of the oil fuel tube in bottom of chamber portion is connect with the injection hole for being configured at the 1st bearing, the lubricating oil injection of the high pressure chest Into the 1st compression chamber of the 1st cylinder.

7. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that further include gas-liquid separation Plate, the gas-liquid separation plate are located at the outside for the crankshaft being fixed on the rotor of the electric motor, and the air intake duct is to described The centre bore aperture of gas-liquid separation plate flows into the refrigerant of the air intake duct into the electrical-coil configured on the electric motor It disperses side.

8. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1, which is characterized in that be fixed on the described 2nd The oily diffusion preventing plate of bearing, can reduce the shaking for being stored in the lubricating oil of the housing bottom.

9. low-pressure shell double-cylinder horizontal rotary compressor according to claim 1 to 8, which is characterized in that in institute The outer surface for stating shell carries the control equipment of the electric motor.

10. a kind of refrigerating circulatory device, which is characterized in that be equipped with low pressure shell according to claim 1 to 9 Body double-cylinder horizontal rotary compressor.