CN2890404Y

CN2890404Y - Reciprocating compressor

Info

Publication number: CN2890404Y
Application number: CN 200620001372
Authority: CN
Inventors: 萧泽良; 余培煜; 陈衍璋
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2004-10-26
Filing date: 2004-10-26
Publication date: 2007-04-18
Anticipated expiration: 2014-10-26

Abstract

The utility model relates to a reciprocating compressor, which comprises a housing, a pedestal, a rotation shaft, a driving device, a piston and a connection rod, wherein the pedestal is provided with a cylinder, the cylinder is provided with an oil channel, the oil channel is provided with an oil inlet hole, a plural of oil outlet holes and a through hole, each oil outlet hole is connected with the oil inlet hole and the inside of the housing, the through hole is connected with one of the oil outlet hole and the inner wall of the cylinder, the rotation shaft is provided on the pedestal, a main oil distributing passage and an auxiliary oil distributing passage are provided, the auxiliary oil distributing passage is connected with the oil inlet hole of the oil channel; and the driving device drives the rotation shaft to rotate, the piston is installed in the cylinder in a free glide mode, one end of the connection rod is installed on the rotation shaft and the other end of the connection rod is installed in the piston. When the rotation shaft is driven, the connection rod spurs the piston to conduct reciprocating movement in the cylinder. Thus, the utility model can be more effective cool and lubricate the cylinder and piston, reduce electricity consumption and increase the service life of the component parts.

Description

Reciprocal compressor

Technical field

The utility model is relevant with compressor, particularly relevant for a kind of reciprocal compressor.

Background technique

The structure of general reciprocal compressor is that the low-temp low-pressure cold media air is sucked in the cylinder of compressor, but utilizes a piston of being located at the cylinder shift reciprocately that (pressure is about 1kg/cm with the low-temp low-pressure refrigerant ²) (pressure is about 12g/cm to be compressed into the High Temperature High Pressure refrigerant ²), and then the High Temperature High Pressure refrigerant discharged via outlet pipe, to finish heat exchange circulation.

In the process of above-mentioned Piston Compression refrigerant, if the radiating effect of cylinder itself is very good, the external work that piston is done at compression refrigerant will all become heat and pass to the external world, is called the isothermal compression process; If the radiating effect of cylinder is not good, the temperature of cylinder can't be discharged fast because of heat and be raise, and in the process of Piston Compression refrigerant, the high temperature of cylinder can be passed to heat the low-temp low-pressure refrigerant that is inhaled into cylinder, promptly can cause hot press method; If there is not mutual heat transfer phenomenon between cylinder and the refrigerant, then be called the adiabatic compression process, and the electric power of compressor consumption descending be hot compression, adiabatic compression, isothermal compression in regular turn.

Yet, existing reciprocal compressor is usually only by upward doing that cold media air cools off, cause the piston heat that shift reciprocately produced in cylinder can't be by complete discharge, cause the lubricity and the thermal diffusivity of cylinder and piston not good, make the process of Piston Compression refrigerant be partial to hot press method, and then have influence on the temperature of compressor inside and refrigerant, and the power of the required consumption of compressor increases, freezing efficiency reduces; And after the rising of the temperature of cylinder and piston, can't lubricate effectively between the two, also can reduce the working life of compressor.

The model utility content

Therefore, main purpose of the present utility model is to be to provide a kind of reciprocal compressor, and more efficiently the temperature of cooling cylinder and piston reduces the refrigerant temperature of discharging compressor, reduces the consumption of electric power, improves cooling effectiveness.

Another purpose of the present utility model then is to provide a kind of reciprocal compressor, and more efficiently lube pistons and cylinder inner wall increase the working life of forming member.

Take off purpose for before reaching, a kind of reciprocal compressor of the utility model is characterized in that, includes:

One housing;

One pedestal is to be located at this enclosure interior; This pedestal has a cylinder, and this cylinder has an asphalt channel; This asphalt channel has into oilhole, at least one oil outlet, and a perforation, and respectively this oil outlet is communicated with this and goes into oilhole and this enclosure interior, and this perforation is communicated with the wherein inwall of an oil outlet and this cylinder;

One rotating shaft is to be located at this pedestal, and this rotating shaft has a main oil gallery that extends vertically, and one axially be the secondary oil duct of predetermined angle extension with this rotating shaft, and this pair oil duct is the oilhole of going into that is communicated in this asphalt channel;

One drive unit is in order to order about this rotating shaft with respect to this pedestal original place rotation;

One piston is located at the cylinder of this pedestal in the mode that can be free to slide; And

One connecting rod, an end is located at this rotating shaft, and the other end is located at this piston, and when this rotating shaft was turned, this connecting rod was to drive this piston shift reciprocately in this cylinder.

Wherein this pedestal has a bearing in addition, and the inner circle wall of this bearing is provided with one first oil duct, and this first oil duct has a through hole that runs through this bearing; This rotating shaft is provided with a perforation and is communicated with this pair oil duct; This rotating shaft is to be arranged in this bearing, makes this perforation be communicated with this first oil duct, and this pair oil duct can be communicated in the oilhole of going into of this asphalt channel.

Wherein this asphalt channel has one second oil duct and one the 3rd oil duct in addition, these oil outlets are through this cylinder, this second oil duct and the 3rd oil duct then are located at the two port of this cylinder respectively should be in these oil outlet positions, and this is gone into oilhole and then is communicated with this second oil duct and should the pair oil duct.

Wherein the interior edge face of this cylinder is provided with an oil baffle, and this oil baffle has the oil drainage hole of a connection the 3rd oil duct.

Description of drawings

Below, conjunction with figs. is enumerated a preferred embodiment structure of the present utility model and effect is elaborated, and wherein used illustrated brief description is as follows:

Fig. 1 is the generalized section of the utility model one preferred embodiment, and wherein piston is to be positioned at outer dead point;

Fig. 2 is the part side view of pedestal in the utility model one preferred embodiment;

Fig. 3 is the generalized section of the utility model one preferred embodiment, and wherein piston is between inner dead point and outer dead point; And

Fig. 4 is the generalized section of the utility model one preferred embodiment, and wherein piston is to be positioned at inner dead point.

Embodiment

See also Figure 1 and Figure 2, reciprocal compressor of the present utility model includes a housing 10, a pedestal 20, a rotating shaft 40, a drive unit 50, a piston 60, and a connecting rod 70; Wherein:

This housing 10 is involuted by a shell 12 on one and a lower casing 14, and lower casing 14 has a coolant outlet port 16 and a refrigerant suction port 18 that is communicated with housing 10 inside.

This pedestal 20 has and is the tabular fixing part of square 21 without exception, and a cylinder 23 of being located at fixing part 21 1 sides; Fixing part 21 central authorities have a bearing 24, and the inner circle wall of bearing 24 is provided with ring-type first oil duct 25 that is sagged shape, and first oil duct, 25 bottoms have a through hole 27 that runs through bearing 24.

Cylinder 23 has an inwall 26 and an asphalt channel 30, and asphalt channel 30 is by some oil outlets 31, one second oil duct 32, one the 3rd oil duct 33, and one goes into 34 formation of oilhole; These oil outlets 31 are to be arranged in inwall 26 peripheries in the form of a ring, and through cylinder 23, wherein an oil outlet 31 is communicated with by a perforation 35 with inwall 26, second oil duct 32 and the 3rd oil duct 33 then are located at the exterior edge face of cylinder 23 and interior edge face respectively corresponding to these oil outlet 31 positions, go into the through hole 27 that oilhole 34 then is communicated with second oil duct 32 and bearing 24; The exterior edge face of cylinder 23 is provided with a valve block group 36, and valve block group 36 is connected in coolant outlet port 16, and the interior edge face of cylinder 23 is provided with an oil baffle 37, and oil baffle 37 has the oil drainage hole 38 of a connection the 3rd oil duct 33; Pedestal 20 is located at housing 10 inside by a supporting component 29, makes pedestal 20 be positioned at the position of close last shell 12.

These rotating shaft 40 inside have a main oil gallery 41, and one and rotating shaft 40 axially be the secondary oil duct 42 that predetermined angle extends, the top of rotating shaft 40 has an eccentric shaft 43; Main oil gallery 41 is to be extended towards the top vertically by the bottom of rotating

shaft

40,42 the inners that are communicated in main oil gallery 41 of secondary oil duct, and towards the top of rotating shaft 40 through eccentric shaft 43, and rotating shaft 40 is provided with a perforation 44 in addition and is communicated with secondary oil duct 42, and an oil pump 45 that is positioned at main oil gallery 40; Rotating shaft 40 is to be arranged in the bearing of pedestal 20 24, and oil pump 45 is positioned near housing 10 bottom positions, and 44 first oil ducts 25 that are communicated with secondary oil ducts 42 and pedestal 20 of boring a hole, and what secondary oil duct 42 can be communicated in asphalt channel 30 goes into oilhole 34.

This drive unit 50 is to be DC Brushless Motor, is located in the supporting component 29 of housing 10, rotates with respect to pedestal 20 original places in order to order about rotating shaft 40.

These piston 60 peripheries have an annular piston groove 61 that is sagged shape, and piston 60 is to be located in the cylinder 23 of pedestal 20, can be free to slide along the inwall 26 of cylinder 23.

These connecting rod 70 1 ends are hubbed at the eccentric shaft 43 of rotating shaft 40, the other end is hubbed at an end of piston 60, when rotating shaft 40 is turned by drive unit 50, the eccentric shaft 43 of rotating shaft 40 can drive piston 60 in cylinder 23 an outer dead point (as shown in Figure 1) and an inner dead point (as shown in Figure 4) between shift reciprocately, the low-temp low-pressure refrigerant is sucked in the cylinder 23 from refrigerant suction port 18, form the High Temperature High Pressure refrigerant by the mobile compression of piston 60, discharge coolant outlet port 16 via valve block group 36 again.

Via said structure, see also Fig. 1 and shown in Figure 4, the lubricant oil of the ccontaining prearranging quatity in bottom of housing 10, when drive unit 50 turns rotating shaft 40 drive pistons 60 compression refrigerants, being located at the oil pump 45 of rotating shaft 40 can squeeze into lubricant oil in main oil gallery 41 and the secondary oil duct 42, and by the centrifugal force of throwing out and be skewed secondary oil duct 42, lubricant oil is sent into first oil duct 25 and through hole 27, and then the asphalt channel 30 of inflow cylinder 23, and rotating shaft 40 is after continuing rotation, the lubricant oil that is positioned at asphalt channel 30 can be gone into oilhole 34 second oil duct 32 of flowing through certainly, each oil outlet 31, and the 3rd oil duct 33, oil drainage hole 38 from oil baffle 37 flows out at last, when lubricant oil when the asphalt channel 30 of cylinder 23 flows, can with from piston 60 and cylinder 23 mutually mutual friction and refrigerant be compressed the heat that work done produces, piston 60 can be shed via cylinder 23 at most of heat that compression refrigerant produced, the process that makes piston 60 compression refrigerants is between adiabatic compression and isothermal compression.

When lubricant oil flows in asphalt channel 30, partly lubricant oil can flow in the perforation 35 from oil outlet 31, and as shown in Figure 3, when piston 60 at cylinder 23 intrinsic displacements to piston channel 61 during corresponding to perforation 35, lubricant oil can flow into piston channel 61 and permeate in inwall 26, makes lubricant oil can be used as lubricated work between piston 60 and the cylinder 23.

Thus, the utility model can be by the design of asphalt channel, allow piston carry out in the process of compression refrigerant, be improved between adiabatic compression and isothermal compression by the present hot press method of being partial to, more efficiently the temperature of cooling cylinder and piston reduces the refrigerant temperature of discharging compressor, reduce power consumption, improve cooling effectiveness, and more efficiently the inwall of lube pistons and cylinder is asked, increases the working life of forming member.

In addition, the utility model also can be designed by the angle and the quantity of asphalt channel, and the aperture flow size design of going into oilhole, oil outlet, makes cylinder in the compression process of refrigerant, reaches better lubricated cooling effect.

Claims

1. a reciprocal compressor is characterized in that, includes:

One housing;

2. according to the described reciprocal compressor of claim 1, it is characterized in that wherein this pedestal has a bearing in addition, the inner circle wall of this bearing is provided with one first oil duct, and this first oil duct has a through hole that runs through this bearing; This rotating shaft is provided with a perforation and is communicated with this pair oil duct; This rotating shaft is to be arranged in this bearing, makes this perforation be communicated with this first oil duct, and this pair oil duct can be communicated in the oilhole of going into of this asphalt channel.

3. according to the described reciprocal compressor of claim 1, it is characterized in that, wherein this asphalt channel has one second oil duct and one the 3rd oil duct in addition, these oil outlets are through this cylinder, this second oil duct and the 3rd oil duct then are located at the two port of this cylinder respectively should be in these oil outlet positions, and this is gone into oilhole and then is communicated with this second oil duct and should the pair oil duct.

4. according to the described reciprocal compressor of claim 3, it is characterized in that wherein the interior edge face of this cylinder is provided with an oil baffle, this oil baffle has the oil drainage hole of a connection the 3rd oil duct.