CN1112665A - Fluid compressor - Google Patents

Abstract

Provided is a fluid compressor which can be composed by employing a simplified air regulator pipe, is able to perform rapidly the pressure balance when the processing ceased. The structure of this invention consists of: tightly enclosed housing; a compressor allocated at the lower part of the housing to discharge the compressed high pressure fluid to inside housing; an electrical motor for driving the compressor; a discharging piping structure allocated in the housing by rotating the valve to towards outside housing; a rotation type switching valve for the low pressure fluid suction pipe to the above compressor; a valve seat for switching valve to be allocated separately at the upper wall of the housing and surrounding the central axle of the housing, and a terminal for the switching valve and a terminal used for the above stated electrical motor.

Description

Fluid compressor

The present invention relates to a kind of fluid compression engine, it has the switching valve that the stream to the working fluid of for example air conditioner (refrigeration agent) switches.

The four-way valve device that refrigeration all is housed on the general air conditioner for both cooling and heating machine and the stream that flows to the working fluid (refrigeration agent) of indoor heat converter and outdoor heat converter is switched when heating.

As this class four-way valve device, extensively adopt among Figure 13 with 1 device of representing.

This four-way valve device 1 comprises valve body 2, the pressurized gas ingress pipe 3 and the low-pressure gas discharge tube 4 that are connected with this valve body 2, but also comprises the 1st, the 2nd connecting tube 6,7 that is communicated with described low-pressure gas discharge tube 4 or described pressurized gas ingress pipe 3 by the switching of being located at the guiding valve 5 in the described valve body 2.

Described guiding valve 5 has the 1st, the 2nd space R1 and the R2 that is separated out at the two end part of the length direction of described valve body 2 by the piston 8,9 that is connected with this guiding valve 5, and works according to the pressure difference of the 1st, 2 space R1 and R2.

As pressure difference being imported this valve body 2 and makes the device of described guiding valve 5 work, among the employing figure with 10 electromagnetic valve devices of representing.

On this electromagnetic valve device 10, connecting copper the 1st, the 2nd capillary tube 11,12 that links to each other with described the 1st, the 2nd space R1, R2, simultaneously, between the 1st, the 2nd capillary tube 11,12, connecting from what described low-pressure gas discharge tube 4 was derived and be similarly the 3rd capillary tube 13 made of copper.

Be located at valve body 14 in this electromagnetic valve device 10 owing to switching with the effect of 15 electromagnet of representing and spring 16 among the figure, thus in interior the 1st or the 2nd space R1, the R2 of the valve body 2 of the described four-way valve device 1 of the pressure of low-pressure gas discharge tube 4 (low pressure) importing.

The described piston of being located in the described cubic control valve unit 8,9 is respectively equipped with fine through hole, in described the 1st, the 2nd space R1, R2, imported the pressure (high pressure) in the described valve body 2 in advance, therefore, as long as low pressure is imported among described the 1st, the 2nd space R1, the R2 any one, promptly between the two, produced pressure difference, just can switch described guiding valve 5.

In air conditioner, the pressurized gas ingress pipe 3 of described four-way valve device 1 is connected with discharge tube with 18 compressors of representing among the figure, and 4 suction pipes with described compressor 18 of described low-pressure gas discharge tube are connected.

In addition, described the 1st connecting tube 6 be connected with 19 outdoor heat converters of representing among the figure, 7 of described the 2nd connecting tubes be connected with 20 indoor heat converters of representing.

Running to this air conditioner is illustrated below.

When heating running, be positioned at position shown in Figure 13 by making described guiding valve 5, described the 2nd connecting tube 7 is communicated with described pressurized gas ingress pipe 3, simultaneously, described the 1st connecting tube 6 is communicated with described low-pressure gas discharge tube 4.

So, flowing process fluid is just carried out change of state on one side in the refrigerant piping of air conditioner, on one side shown in arrow among the figure, the compressor 18 of flowing through successively, indoor heat converter 20, expansion valve 21, outdoor heat converter 19, and compressor 18 make this air conditioner heat running.

In addition, when refrigeration, switch, described the 1st connecting tube 6 is communicated with described pressurized gas ingress pipe 3, simultaneously, described the 2nd connecting tube 7 is communicated with described low-pressure gas discharge tube 4 by guiding valve 5 with 10 pairs of four-way valve devices 1 of described electromagnetic valve device.

So, working fluid just closes on the contrary with above-mentioned field boundary, flows to indoor heat converter 20 from outdoor heat converter 19, makes this air conditioner carry out cooling operation.

Yet, the problem that on air conditioner, also exists following needs to solve with above-mentioned four-way valve device.

That is, the above-mentioned four-way valve device 1 and the complex structure of electromagnetic valve device 10, and bulky, and as mentioned above, need many parts.In addition, the pipe arrangement complexity, particularly, because pressurized gas ingress pipe 3 is connected with the discharge tube of described compressor 18, therefore transmitting vibrations also will take vibration protection easily.

Also have, traditional use in refrigeration system refrigeration agent is that to adopt with R-22 be the HCFC series refrigeration agent of representative, yet, come into effect about the restriction of freon, studying at present with HFC series refrigeration agent refrigeration agent as an alternative.

This HFC series refrigeration agent is compared with traditional HCFC series refrigeration agent, propagate sound easily, particularly on the described four-way valve device 1 that adopts reciprocatory slide valve 5, the collision sound during switch motion can be propagated to indoor heat converter 20 through refrigeration agent, produces noise (unusual sound).

As shown in figure 13, connect described valve body 2 and be exposed at the outside of described shell 24 with the 1st～the 3rd capillary tube 11～13 of electromagnetic valve device 10, so have collision promptly can deform slightly, formation work is bad.

As the invention of this class problem of solution, once on the open 1985-124595 communique of Japanese Utility Model, disclosed.

As shown in figure 14, this invention is that a kind of making is full of the compressor of discharging gas from the high pressure of described compressor section 22 discharges in the closed shell 24 of accommodating compressor section 22 and motor part 23, it is by installing four-way valve device 1 and the electromagnetic valve device 10 with above-mentioned structure in described shell 24, and exempted the pipe arrangement of ingress pipe 4, simultaneously, can prevent that described capillary tube 11～13 is damaged because of external force.

Yet, even such structure still fails to solve complex structure, bulky problem, but also produced new problem, promptly, make the compressor own vol become huge, can not adapt to the trend of compressor miniaturization in recent years because this four-way valve device 1 is assembled in the shell 24.

Also have, this four-way valve device 1 is worked by pressure difference, so described guiding valve 5 must often keep and the valve seat driving fits, when shutting down, can produce the problem that is difficult to obtain pressure balance (gas equilibrium) between the pipe arrangement.

That is, obtaining pressure balance needs for a long time, restarts or freeze, heat switching between the running after therefore can not promptly stopping.

And, as shown in the drawing when adopting this fluid compression engine, be the terminal that takes out several pipe arrangements (low-pressure gas discharge tube the 4, the 1st, the 2nd connecting tube 6,7) and power supply usefulness from the upper end wall of described shell 24.

Therefore, a plurality of through holes must be set, thereby produce encapsulation (sealing) problem of shell 24 in the upper end wall of described shell 24.

Also have, in order to increase resistance to pressure, the upper end wall of described shell 24 is preferably made bending (dome-shaped) shape, yet, therefore consider above-mentioned encapsulation and tightness, the driving fit between described shell 24 and each pipe arrangement and terminal is just extremely important, wishes to make even shape.

Yet,, can produce the problem that resistance to pressure worsens again if when the upper end wall of shell made flat condition.

In addition, when the pressure test of doing this fluid compression engine or gas leakage test, described four-way valve device 1 is contained on the shell 24 carries out.Promptly, be that outer with stretching out described shell respectively low-pressure gas discharge tube the 4, the 1st, the 2nd connecting tube 6,7 is connected with the gas introduction tube (not shown) test, set point of temperature, the test of pressure is injected in selector valve device 1 and the shell 24 with gas by this gas introduction tube.

Yet, like this test is bothered with the operation that each pipe arrangement 4,6,7 is connected respectively with gas introduction tube very much, and also might make these pipe arrangements 4,6,7 distortion or breakages when connecting.Also be difficult to keep the sealing of the joint between described each pipe arrangement 4,6,7 and gas introduction tube simultaneously.

Also have, described fluid compression engine must be provided with four-way valve device 1 and electromagnetic switching valve device 10 these 2 devices in described shell 24.And described four-way valve device 1 is a direct-acting type, and 2 of described valve bodies are the structures to a direction elongation.

Therefore, the position that is provided with of described four-way valve device 1 is restricted, and can depart from the central shaft of this shell 24 sometimes at the pressurized gas ingress pipe 3 of described shell 24 inner openings, and at the position opening near the inner circle wall of this shell 24.

In described shell 24, the lubricant oil that is used for lubricated described drive motor 23 grades disperses with atomize, and particularly disperse in a large number near the position the inner circle wall of described shell 24.

Thereby the described lubricant oil of a large amount of suctions in described pressurized gas ingress pipe 3 reduces the lubricants capacities in this shell 24, simultaneously, because described lubricant oil enters described outdoor or indoor heat converter, causes the low problem of heat exchange performance of these heat exchangers.

In view of above-mentioned truth, the object of the present invention is to provide a kind of fluid compression engine, it can not only simplify the conduits structure of air conditioner, and can be easily and the pressure balance when promptly stopping, and resistance to pressure, sealing are good, can prevent that the lubricant oil in the shell from flowing out.

The 1st technological scheme of the present invention provides a kind of fluid compression engine, it is characterized in that, comprises a closed shell at the blocked drum of an axial end and the other end; Be located in this shell, the low-pressure fluid that sucks from shell outside is compressed and the high-pressure liquid after compressing is discharged to compressor section in the shell; The drive motor of being located in the described shell, this compressor section being driven; Be located in the described shell, reach the rotation shape switching valve that is switched towards the attraction pipe arrangement of the low-pressure fluid of described compressor section by the discharge pipe arrangement that makes the high-pressure liquid of valve body turning handle towards shell outside; Disperse to be located at around the central axis of this shell on the end wall of described shell and run through this shell and power supply terminal that the valve base of the described rotation shape switching valve that is fixed, power supply terminal that this switching valve is used and described drive motor are used.

The 2nd technological scheme provides a kind of fluid compression engine, it is characterized in that, in the fluid compression engine of described the 1st technological scheme, described rotation shape switching valve comprises the valve base of an end wall that is fixed in described shell; Rotate the valve body of being located at freely on that side that is positioned at described shell on this valve base; Be fixed in described valve base and be located in the described shell, described valve body is carried out the actuator of rotating drive, and described actuator is provided in the approaching position of power supply terminal that the power supply terminal used with the switching valve that is fixed in one of described shell end wall or described drive motor are used.

The 3rd technological scheme provides a kind of fluid compression engine, it is characterized in that, in the fluid compression engine of described the 1st technological scheme, described rotation shape switching valve comprises the valve base of an end wall that is fixed in described shell; Rotate the valve body of being located at freely on that side that is positioned at described shell on this valve base; Be fixed in described valve base and be located in the described shell, described valve body is carried out the actuator of rotating drive, and described actuator is provided in the less approaching position of that terminal in the power supply terminal that the power supply terminal used with the switching valve that is fixed in one of described shell end wall or described drive motor use.

The 4th technological scheme provides a kind of fluid compression engine, it is characterized in that, in the fluid compression engine of described the 1st technological scheme, described rotation shape switching valve comprises the valve base that is installed on described shell; Be located on this valve base, 3 air scoops of the lateral opening of both sides inside and outside the shell of this valve base; Rotate the valve body of being located at freely on described valve base one side that has described 3 air scoops and be positioned at shell; Be located at that relative on this valve body face and turn an angle and make 2 adjacent in described 3 air scoops connectivity slots that air scoop interconnects selectively by described valve body with described valve base; Be located at described valve body, make the interior through hole that is communicated with of another air scoop and shell; Described valve body is carried out the actuator of rotating drive, and be fixed in described 3 air scoops on the described valve base of described shell and be positioned at the central shaft of 2 air scoops at circumferencial direction two ends than the more approaching described shell of another air scoop.

The 5th technological scheme provides a kind of fluid compression engine, it is characterized in that, in the fluid compression engine of described the 1st technological scheme, the outer circumferential face of valve base outside exposing described shell of described rotation shape switching valve is provided with the engagement portion that engages with the gas introduction tube of testing usefulness.

The 6th technological scheme provides a kind of fluid compression engine, it is characterized in that, in the fluid compression engine of described the 1st technological scheme, the fluid that is full of in the described shell is a HFC series refrigeration agent.

Adopt the 1st technological scheme, rotate, can change the stream that imports the fluid in the compressor by making valve body.Can on air conditioner, freeze and heat the switching of running thus with indoor heat converter and outdoor heat converter.And, owing to be that valve base and 2 power supply terminals are disperseed to be located at around the central shaft of shell, therefore can make the intensity of an end wall of this shell roughly even.

Adopt the 2nd, the 3rd technological scheme,, can increase the flexibility that the position is set of described valve base, and make the intensity of a described end wall more even by actuator being arranged near one position in 2 terminals.

Adopt the 4th technological scheme, freeze or in shell, open wide when heating and 2 air scoops becoming the suction side can be arranged on position near the shell central shaft, therefore can reduce suction the lubricant oil that disperses in the enclosure.

Adopt the 5th technological scheme, when doing pressure test or gas leakage test,, can be connected this gas introduction tube with each pipe arrangement of this valve base by test is engaged with described valve base with gas introduction tube.

Adopt the 6th technological scheme, this fluid compression engine can be with the alternative refrigerant of freon, be the work of HFC series refrigeration agent, even in this occasion, and still can be by making the switching valve portion work in the shell, the switching of freezing and heating.In addition, also can make the intensity homogenization of an end wall of shell.

It below is simple declaration to accompanying drawing.

Fig. 1 is an embodiment's of an expression fluid compression engine of the present invention longitudinal section.

Fig. 2 represents this embodiment's switching valve portion, (a) is plan view, (b) is the sectional view along the I-I line of (a), (c) is the side view of (a), (d) is the sectional view along the III-III line of (b), (e) is the sectional view along the II-II line of (a).

Fig. 3 is plan view, side view and the worm's eye view of valve base of representing this embodiment's switching valve portion.

Fig. 4 is plan view, side view and a plan view of representing this embodiment's magnetic force switching part.

Fig. 5 is plan view, side view and a worm's eye view of representing this embodiment's valve body.

Fig. 6 is plan view and a longitudinal section of representing this embodiment's magnet component.

Fig. 7 is the plan view of this embodiment's compressor.

Fig. 8 is the process chart of switch motion of representing this embodiment's switching valve portion.

Fig. 9 is the amplification longitudinal section of valve base upper end.

Figure 10 is other embodiments' of expression the 1st embodiment the amplification longitudinal section of valve base upper end.

Figure 11 is the plan view of expression the 2nd embodiment's compressor.

Figure 12 is the plan view of expression the 3rd embodiment's compressor.

Figure 13 is the longitudinal section of the traditional four-way valve of expression.

Figure 14 is a longitudinal section of representing the compressor of traditional four-way valve.

Below in conjunction with description of drawings the 1st embodiment of the present invention.

25 is closed shells among Fig. 1.This closed shell is the drum of lower end obturation, in upper end open portion cap 25a is housed.

The lower end wall of this closed shell 25 is made curved shape (circular arch shape) in order to increase compression resistance, the upper wall of described cap 25a then roughly becomes flat condition.As described later, the upper wall of this cap 25a is equipped with a plurality of parts (switching valve portion the 1, the 1st, the 2nd sealing terminal), in order to ensure and these parts between adaptation, the upper wall of the 25a of this wall portion roughly becomes flat condition.

In addition, in this closed shell 25, be provided with compressor section 26 respectively in underpart, intermediate portion and the upper end portion of short transverse, drive this compressor section 26 and make its motor part of making compressed action 27, rotate the shape switching valve) as the 28(of switching valve portion of the present invention's pith.

The structure of each several part below is described.

Described motor part 27 is the DC brushless motor that is made of the stator 30 of the inner side surface that is fixed in described closed shell 25 and the rotor 31 that is arranged at side within this stator 30 and the described rotor 31 shrink fit top with 32 live axles of representing in figure.

This live axle 32 is with the state setting consistent with the central shaft of described closed shell 25 of its spin axis.In addition, stretch out in described compressor section 26 underpart of this live axle 32.

Form 2 in the underpart of this live axle 32 and separate certain size and the crank portion 32a of the 180 ° of phase places that stagger mutually at above-below direction.

The partition member 33 that described compressor section 26 is fixed on the shell 25 keeps, and also comprises 2 cylindrical cylinder 35,35 that connect at above-below direction with 34 intermediate plates of representing in figure simultaneously.And 2 crank portion 32a, 32a of described live axle 32 lay respectively in these 2 cylinders 35,35.

In addition, this live axle 32 is fixed in the 1st bearing part 37(main bearing on the described partition member 33) and the 2nd bearing part 38(supplementary bearing that gets up with the 1st bearing part 37, the upper end of described 2 cylinders 35,35 and lower end closed) support, and freely round the vertical axis rotation.

In addition, 2 of described live axle 32 last setting-ins respectively of crank portion 32a, 32a cylindric rotor 40,40.This rotor 40,40 is being held and the part of described cylinder 35 off-centre and outer circumferential face and the inner peripheral surface state of contact of this cylinder 35.

Thereby just being separated out a transverse section between the outer circumferential face of the rotor 40 of the inner peripheral surface of described cylinder 35 and described off-centre is half moon-shaped compression volume 41.

And in described cylinder 35, be provided with the diagram that described compression volume 41 is separated into the relevant upside cylinder 35 of demarcation strip 42(of high pressure side and low voltage side and omit).This demarcation strip 42 since among the figure with the effect of 43 springs of representing to described rotor 40 1 sides (central direction of cylinder 35) reinforcing, and come in and go out and be located at board slot on the described cylinder 35, not shown in the figures, its front end contacts with the outer circumferential face of described rotor 40 all the time.

In addition, formed the drain passageway that refrigerant gas is sucked the suction path 44 in the described compression volume 41 and the refrigerant gas (discharge gas) after the compression is discharged respectively in the both sides of the described demarcation strip 42 of clipping of described cylinder 35.About sucking path 44, only in the cylinder 35 of upside, illustrate.

Respectively suck in the path 44 described, be connected with the suction pipe of representing with 45 respectively, this suction pipe 45 stretches out to the outside of this closed shell 25, and with figure in be connected with 46 gas-liquid separators of representing.

In addition, described drain passageway is by being communicated with baffler 50 and penetrating described cylinder 35, intermediate plate the 34, the 1st bearing part 37, and form at the 2nd path of the opened upper end of shell 25 equally from this baffler 50 at the 1st path of the opened upper end of described shell 25 and from the 2nd expulsion valve 49 of the flange of being located at the 2nd bearing part 38 by baffler 48 from the 1st expulsion valve 47 of the lip part of being located at described the 1st bearing part 37.

Thereby, working fluid in the refrigerant piping is inhaled in the described cylinder 35 by described suction pipe 45, and, discharge in the top of described shell 25 by the drain passageway of forming by described the 1st, the 2nd path then owing to the rotation of described rotor 40 is compressed.That is, in described shell 25, discharge gas with high pressure and keep high pressure.

On the other hand, in the 25b of the space, underpart of this closed shell 25, accumulating lubricant oil.And the above-below direction in described live axle 32 has formed pore not shown in the figures, is provided with simultaneously the pump-unit that described lubricant oil is drawn onto in this pore not shown in the figures in this lower end of 32.

The lubricant oil that are drawn onto in the described axle 32 are discharged in described compressor section 26 from described pore, and each slide part of this compressor section 26 is lubricated.

The high-pressure liquid that is mixed with lubricant oil that is discharged in this shell 25 rises by slit between rotor 31 and the stator 30 or the refrigeration agent circulation flow path 31a that is located at the axial perforation on the rotor 31, and impact the discoid oil that is fixed in described 32 upper-end surfaces separate out plate 51 below.

The centrifugal force that rotation produced of separating out plate 51 owing to this oil makes high-pressure liquid and the described lubricating oil separation in this shell 25, simultaneously, the lubricant oil of separating is dispersed to the inner circle wall side of shell 25, and each slide part of described motor part 27 is lubricated.

Being through with is recycled to the underpart of described shell 25 to the lubricant oil behind each slide part lubricated, and once more each slide part of described motor part 27 and compressor section 26 is lubricated.

In addition, derived outside this shell 25 by described switching valve portion 28 with the described high-pressure liquid of this lubricating oil separation.

Below in conjunction with Fig. 1～Fig. 9 described switching valve portion 28 is described.

This switching valve portion 28 is four-way switching valves, as shown in Figure 1, comprise on the valve base 52 that connects on the lid 25a upper wall be fixed in closed shell 25, the side inside the shell that this valve base 52 is located in rotation freely and valve body 53 that the stream of working fluid is switched, be fixed in this valve body 53 radially outer edge portion magnet component 54, drive the magnetic force switching part 55(actuator that described valve body 53 and flow path are switched by making these magnet component 54 performance magnetic forces) and the carriage 56 of topped this switching valve portion 28.

As shown in Figure 3, circular when described valve base 52 is overlooked, there is the flange 52a of a diameter greater than the upper end portion underpart.And as shown in Figure 1, this valve base 52 connects on the upper wall that is installed on the cap 25a of the upper end obturation of described closed shell 25.

That is,, formed with 57 the 1st mounting holes of representing that run through described closed shell 25 among Fig. 1 in the upper wall portions of this cap 25a.By the described upper end side of this valve base 52 being inserted in the 1st mounting hole 57 it is contained on this cap 25a, and fixes, so that described the 1st mounting hole 57 is sealed by welding method for example.

In addition, as shown in Figure 3, fixing on the axis L of being located at this valve base 52 on this valve base 52 and central shaft 58 that its lower end side is stretched out in described shell 25.And, around this central shaft 58 on this valve base 52, along the circumferential direction, with 90 ° 3 air scoops 59～61 that run through this valve base 52 at axle direction that are interval with.

As shown in Figure 1, the air scoop 60 that is arranged in central authorities in these 3 air scoops 59～61 becomes the low-pressure gas exhaust port that is connected with the suction pipe 45 that stretches out from described compressor section 26 (be equivalent to conventional case (Figure 13, Figure 14) 4), other 2 air scoops 59,61 that this low-pressure gas exhaust port 60 is clipped in the middle become respectively with figure in the 1st, the 2nd connection that is connected with 62,63 indoor heat exchangers of representing and outdoor use heat exchanger with air scoop (being equivalent to 6 in the conventional case, 7).

In addition, as shown in Figure 3, on this valve base 52 with described low-pressure gas exhaust port 60 on circumferencial direction is separated by 180 ° position, be embedded with the underpart stretch out from the lower surface of this valve base 52 the brake slipper 64(figure of some represent with reticulate pattern).

Shown in Fig. 1 and Fig. 2 (b), the upper end portion of this brake slipper 64 is installed on the described valve base 52 by the screw thread combination.And the position from described valve base 52 stretches out of this brake slipper 64 has the external diameter smaller than the amplitude of described 3 air scoops 59～61.

On the other hand, the outer circumferential face in the upper end portion of this valve base 52, along this valve base 52 a week formed groove 52b, as the engagement portion that engages with gas introduction tube with test described later.

Shown in Fig. 2 (b), below the described valve base 52 that so forms, aforementioned valve body 53 is housed.This valve body has stable on heating nonmagnetic metal with aluminium, brass, zinc etc. and makes.

The installation of valve body 53 is by the described central shaft 58 that stretches out from described valve base 52 being passed be located at the center hole 53a of centre among this valve body 53, the upper side of valve body 53 is contacted with the downside of described valve base 52, and turn freely with respect to this valve base 52.

As shown in Figure 5, the upper side of this valve body 53 is provided with and makes in described 3 air scoops 59～61 groove 66 that is communicated with (59,60 or 60,61) between 2 adjacent air scoops of 90 ° of intervals.

As shown in the figure, this groove 66 is paths, have longitudinal plane and become the internal surface of semi-circular shape, shown in Fig. 8 (a)～(d), do 90 ° of rotations by making described valve body 53, can switch, make between the adjacent air scoop, that is, make between described low-pressure gas exhaust port 60 and the 1st connection mouth 59, or be communicated with between low-pressure gas exhaust port 60 and the 2nd connection mouth 61.

In addition, as shown in Figure 5, around the described groove 66 of the upper surface of described valve body 53, and valve body 53 is integrally formed into the sealed member 66a that is sealed between this valve body 53 of handlebar and the described valve base 52.

On described relatively center hole 53a on this valve body 53 and described groove 66 centrosymmetric positions, be provided with the through hole 67 that faces down and connect from this valve body 53.The plan view shape of this through hole 67 is similar to described groove 66.

Shown in Fig. 2 (b), when being installed on this valve body 53 on the described valve base 52, the extending area, lower end of being located at the brake slipper 64 on the described valve base 52 is in this through hole 67.

And for example should figure (d) shown in, this brake slipper 64 contacts with an end or the other end of the circumferencial direction of described through hole 67, the motion limits of the sense of rotation of described valve body 53 in 90 ° scope.And, rotate in this scope of 90 ° by making this valve body 53, can switch, described through hole 67 is communicated with the described the 1st or the 2nd connection mouth 59,61.

Also have, shown in Fig. 8 (a) and (b), because described groove 66 concerns that with the position of described through hole 67 when described the 1st connection mouth 59 was communicated with described through hole 67, described the 2nd attachment hole 61 was connected to each other by described groove 66 with described low-pressure gas exhaust port 60.

And for example shown in Fig. 8 (c), (d), when described the 2nd connection mouth 61 was connected with described through hole 67, described the 1st connection mouth 59 was connected to each other by described groove 66 with described low-pressure gas exhaust port 60.

Because described through hole 67 opens wide to described shell 25 in, thus can play with conventional case in pressurized gas ingress pipe 3(Figure 13, Figure 14 shown in) identical effect.

Again as shown in Figure 5, the upper end portion of this valve body 53 has formed the lip part 53b that stretches out some to the radial outside of this valve body 53.Assigned position at circumferencial direction below this lip part 53b has formed the location projection 68 that engages with aforementioned magnet component 54.

Shown in Fig. 2 (b), this magnet component 54 has the thin walled cylinder shape collar 69 of the lower end side that inserts in described valve body 53 outward and the permanent magnet 70 that is fixed in the outside of this collar 69.

An one of the circumferencial direction of the described collar 69, be provided with the slit of representing with the 69a among Fig. 6, by described protruding 68 consistent and engagings on making this slit 69a and being located at described valve body 53, it and described valve body 53 are made up, and make between the two and can not relatively rotate.

As shown in the drawing again, described permanent magnet 70 is divided into two with 180 ° interval, and the two-part that are respectively N utmost point 70a of portion and the S utmost point 70b of portion constitute, and by described magnetic force switching part 55(actuator of the present invention) the attraction repulsive force drive.

As Fig. 2 (d) and shown in Figure 4, described magnetic force switching part 55 by the iron strut 72 of a pair of band plate-like of parallel spaced apart, be set up in the iron core 73 between the base end part of this strut 72 and the electromagnet 74 that coiling forms on this iron core 73 constitutes.

The front end of described strut 72 is along the outer circumferential face bending that is fixed on the permanent magnet 70 on the described valve body, its bending radius is also bigger than the external diameter of described permanent magnet 70, has small slit thereby make between the outer circumferential face of inner circumferential surface and described permanent magnet 70.

And, between the front end of 2 struts 72 spaced-apart about 90 ° along the bending direction of this strut 72.

This magnetic force switching part 55 can be magnetized into the front end of described strut 72 polarity of regulation by direct current (d.c.) being imposed on described electromagnet 74, and by switching its magnetic, the attraction repulsive interaction that utilization and described permanent magnet are 70 is rotated driving to described valve body 53.

Be provided with carriages in addition with 56 expressions among Fig. 2 (b)～(e) in the outside of the front end of this strut 72.This carriage 56 is the parts of thin walled cylinder shape, and the upper end portion is bonded in below the outer edge of flange 52a of described valve base 52.

Shown in this figure (c), (d), this carriage 56 is provided with the terminal side of described strut 72 (electromagnet 74 1 sides) is taken out to switch-in part 56a used outside this carriage 56.Described carriage 56 decides the position of described magnetic force generating unit 55 by described switch-in part 56a, and prevents its rotation.

On the other hand, in the lower end of described carriage 56 and 52 of described valve bases run through described valve body 53 and the lower end of the described central shaft 58 that stretches out downwards is fixed with compacting parts with 77 expressions among Fig. 2 (b) and this figure (e).

77 one-tenth band plate-like of this compacting part, the lower end of described carriage 56 is fixed in welding method in the two end part of its length direction, and its central part then is fixed in the lower end of described central shaft 58.

In addition, the spring of 78 that represent in inserting with this figure between the downside of the central part of this compacting part 77 and described valve body 53, axial compression is described valve body 53(and magnet component 54) be depressed on the downside of described valve base 52.

The force intensity that adds of this spring 78 is adjusted to when this compressor is not worked, promptly when pressure does not work to this switching valve portion 28, because the deadweight of described valve body 53, allowing has small gap between the downside of the upper side of described valve body 53 and described valve base 52.

Also have, when the switching valve portion 28 of above explanation is assembled, at first described carriage 56 is fixed on the described valve base 52.On the other hand, in advance described magnet component 54 is bonded on the outer circumferential face of described valve body 53.

Then, described the 1st mounting hole 57 interior backs that the upper end portion of described valve base 52 is inserted on the cap 25a that is located at described closed shell 25 are welded, are fixed.

Then, there is splicing the described valve body 53 of described magnet component 54 to be installed on the central shaft 58 of valve base 52, simultaneously, assembles described magnetic force switching part 55.Last on one side described spring 78 compressions, one side described compacting part 77 is fixed in the lower end of described central shaft 58 and carriage 56.

On the other hand, as Fig. 1 and shown in Figure 7, the side of the 1st mounting hole 57 that the valve base of described switching valve portion 28 is installed on described cap 25a is provided with the 2nd, the 3rd mounting hole 90a, 90b.On the 2nd, the 3rd mounting hole 90a, 90b, with the 2nd, the 3rd mounting hole in addition the form of airtight sealing the 1st, the 2nd hermetic terminal of representing with 91a, 91b among the figure (power supply terminal that power supply terminal that drive motor is used and switching valve portion use) is housed.

Following explanation described the 1st～the 3rd mounting hole 57,90a, 90b, that is, and the valve base 52 and the 1st of described switching valve portion 28, the position relation of the 2nd hermetic terminal 91a, 91b.

As shown in Figure 7, the connecting line (a) that connects between the center of described the 1st, the 2nd hermetic terminal is parallel to each other with center line (b) along the length direction of described switching valve portion 28.

In addition, position described the 1st mounting hole 57(valve base 52) be t(t＞0 by the distance between axle (representing with A among the figure) among the described shell 25 and the line (c) parallel with described each center line (a) and (b)).

Thereby the position of described the 1st～the 3rd mounting hole 57,90a, 90b forms the triangle that the central shaft A of described shell 25 is surrounded.

Utilize this figure explanation to be located at the position relation of the 1st, the 2nd connection mouth 59,61 on the described valve base 52 below.

1st, to be positioned at the central shaft A with described shell 25 be on the concentric circle at center to the 2nd connection mouth 59,61.That is, described the 1st, the 2nd connection mouth 59,61 is in than another air scoop 60(low-pressure gas introducing port of being located on this valve base 52) position of more approaching described central shaft A.

The following describes described the 1st, the 2nd hermetic terminal 91a, 91b.1st, the 2nd hermetic terminal 91a, 91b are used for the distribution that the magnetic force switching part power substation to described motor part 27 and described switching valve portion 28 uses is taken out outside the described shell 25.

As shown in Figure 1, described the 1st hermetic terminal 91a comprises the 3 the 1st～the 3rd inner terminal 92～94 of stretching out and the 3 the 1st～the 3rd outer terminal 96～98 that is connected with each terminal and stretches out outside this shell 25 in shell 25.

In addition, described the 2nd hermetic terminal 91b comprises pair of inside terminal 95,95 that stretches out equally and the pair of outside terminal 99,99 that is connected with each terminal and stretches out outside this shell 25 in shell 25.

Described the 1st～the 3rd inner terminal 92～94 of described the 1st hermetic terminal 91a is connected with 3 leads that three-phase coil from described motor part 27 takes out through a pair of the 1st connectors 100, in addition, the described pair of inside terminal 95,95 of described the 2nd hermetic terminal 91b is connected respectively with 2 leads that take out from described switching valve portion 28 through a pair of the 2nd connectors 101.

Promptly, when this compressor of assembling, described switching valve portion 28 and described the 1st, the 2nd hermetic terminal 91a, 91b are assembled on described cap 25a, at first, from pair of inside terminal 95,95 extended the 2nd connectors 101 of described the 2nd hermetic terminal 91b be connected from described switching valve portion 28 extended the 2nd connectors 101.

Then, when being loaded on described cap 25a on the described shell 25, the 1st connector 100 of drawing from the 1st of described the 1st hermetic terminal 91a～the 3rd inner terminal 92～94 is connected with the 1st connector 100 of drawing from described motor part 27.

On the other hand, be connected with 103 control devices of representing among each outside terminal 96～99 of described the 1st, the 2nd hermetic terminal 91a, 91b and the figure.

(イ Application バ-) circuit 105 is formed with the control circuit 108 that switching valve portion 28 is driven in the paraphase that this control device 103 is driven by the motor part 27 to compressor.

Thereby, on described phase inverter 105, connecting each distribution of drawing from described the 1st～the 3rd outer terminal 96～98 of described the 1st hermetic terminal 91a.

In addition, the outer terminal 99 that on described control circuit 108, is connecting described the 2nd hermetic terminal 91b.This control circuit adopts structure for example shown in Figure 8.

That is, the energising of the electromagnet from ac power supply 107 to described magnetic force switching part 55 74 is carried out through the photoelectricity bidirectional triode thyristor 110 that carries out half-wave control.At this moment, hand over by microcomputer 111 and with the 0V(zero that exchanges) transphasor 112 that regularly detects, at described zero crossing, judge whether to described photoelectricity bidirectional triode thyristor 110 energisings and export this judged result.

So, described magnetic force switching part 28 can switch to the N utmost point and the S utmost point (Fig. 8 (a), (c)) to the magnetic of described a pair of strut 72, also can stop to take place simultaneously magnetic force (Fig. 8 (b), (d).

In addition, in described control device 103, be provided with temperature detecting part 113 in the shell that detects temperature in the described shell 25.

This temperature detecting part 113 with the 3rd, the 4th outside terminal 99,99 wiring of for example described hermetic terminal, and detects the coil resistance of the electromagnet 74 of described magnetic force switching part 55, is worth the temperature that detects in the described shell 25 according to this.

Below explanation has the control (action) of the air conditioner of above-mentioned compressor.

Control when at first, cooling operation being described.

When cooling operation, shown in the oscillogram of Fig. 8 (a), the voltage of the electromagnet 74 that imposes on described switching valve portion 28 is controlled.Thus the strut 72 that is positioned at upside among the figure is magnetized into the N utmost point, the strut 72 that is positioned at downside is magnetized into the S utmost point.

Thereby the strut 72 that the S utmost point 70b of portion that is fixed in the magnet component 54 of described valve body 53 is positioned at upper side position among the figure attracts, and the strut 72 that the N utmost point 70a of portion then is positioned at downside attracts, and makes described valve body 53 do the inhour rotation thus.

Shown in Fig. 8 (a), when turning to predetermined angular, a brake slipper 64 that below described valve base 52, stretches out and an end in contact of the circumferencial direction of the through hole 67 of described valve body 52, described valve body 53 stops.Thus, described the 2nd connection mouth 61 is communicated with by described groove 66 with low-pressure gas exhaust port 60, and described the 1st connection mouth 59 opens wide in described closed shell 25 through described through hole 67.

Under such state, make described motor part 27 work shown in Fig. 1.

Owing to the work of this motor part 27 makes described compressor section 26 work, and working fluid is compressed.High-pressure liquid through overcompression is discharged in described closed shell 25.Simultaneously, the high-pressure liquid that is full of in the closed shell 25 flows into described the 1st connection mouth 59 by the through hole of being located on the described valve body 53 67.

At this moment, in described shell 25, the lubricant oil of supplying with described compressor section 26 and motor part 27 disperses into spray form with described high-pressure liquid.Yet, owing to there has been described oil to separate out plate 51, can prevents that this lubricant oil from rising to and be higher than the height that this oil is separated out plate 51, and, separate out the centrifugal force that rotation produced of plate 51 by this oil and lubricant oil is separated with described high-pressure liquid.

Thereby the high-pressure liquid mobile in the center upper portion of this shell 25 contains described lubricant oil hardly.Because described through hole 67 and near described the 1st connection mouth 59 opening central shaft of this shell 25, therefore in described switching valve portion 28, can suck the high-pressure liquid that contains lubricant oil hardly.

The high-temperature, high pressure fluid that flows in the 1st connection mouth 59 passes through outdoor heat converter 62, expansion valve, indoor heat converter 63 successively while carrying out change of state, carries out indoor refrigeration.

Fluid by described indoor heat converter 63 flows into the 2nd connection mouth 61, and the described low-pressure gas exhaust port 60 of groove 66 inflows by being located at described valve body 53, and, be imported into the compressor section 26 in the described shell 25 through the suction pipe 45 of compressor from this low-pressure gas exhaust port 60.

The fluid that is imported in the compressor 26 is discharged in the described shell 25 after these compressor 26 compressions once more.Then, be imported into outdoor heat converter 62 through the through hole 67 of described switching valve portion 28 from described the 1st connection mouth 59 once more, and in the pipe arrangement of this air conditioner, circulate.

Also have, by the control shown in Fig. 8 (a) described valve body 53 is being switched to the rear flank of freezing, when carrying out described cooling operation, described control circuit 108 is controlled shown in the oscillogram of Fig. 8 (b).That is, the described voltage that applies is controlled so as to 0, and described a pair of strut 72 is not magnetized.

Even under such state because described strut 72 is iron (magnetics), therefore, by and the attraction force of 54 of magnet components, still can keep the state of described Fig. 8 (a).And, because the inside of the pressure ratio shell 25 in the at this moment described groove 66 is low, thus can make driving fit between described valve body 53 and the valve base 52 with the pressure in the shell 25, and be not easy displacement.

On the other hand, when cooling operation is stopped, described motor part 27 is stopped.Like this, because the pressure in the described shell 25 reduces, the closed state between described valve body 53 and the described valve base 52 is disengaged.And because the deadweight of described valve body 53, described spring 78 is subjected to certain compression, and 52 of described valve body 53 and described valve bases produce small gap, and the pressure in described the 1st, the 2nd connection mouth 59,61 and the low-pressure gas exhaust port 60 obtains balance.

Like this, switching to following heating when running of will illustrating, can carry out the driving of described valve body 52 simply with low torque.

Control and action when below explanation heats running.

Heating when running, shown in the oscillogram of Fig. 8 (c), the voltage of the electromagnet 74 that imposes on described switching valve portion 28 is controlled.Thus, opposite with the occasion shown in Fig. 8 (a), the strut 72 that is arranged in the figure upside is magnetized to the S utmost point, and the strut 72 that is positioned at downside is magnetized to the N utmost point.

Like this, the strut 72 that the N utmost point 70a of portion that is fixed in the magnet component 54 of described valve body 53 is positioned at upside among the figure attracts, and the strut 72 that the S utmost point 70b of portion is positioned at downside attracts, and thus, described valve body 53 is turned clockwise.

Shown in Fig. 8 (c), when turning to predetermined angular, the brake slipper 64 that stretches out below described valve base 52 contacts with the other end of the circumferencial direction of the through hole 67 of described valve body 52, and described valve body 53 stops.

Like this, opposite with when refrigeration, described the 1st connection mouth 59 is communicated with by described groove 66 with low-pressure gas exhaust port 60, the described through hole 67 of 61 processes of described the 2nd connection mouth and unlimited in described closed shell 25.

In case the running of the described motor part 27 of beginning under such state then because the work of described compressor section 26 makes in the described shell 25 and is full of pressurized gas, and makes the downside driving fit of described valve body 53 and described valve body 52 owing to its pressure.

And, while the high-pressure liquid in this shell 25 carries out change of state successively by indoor heat converter 63, expansion valve (decompressor), outdoor heat converter 62 from described the 2nd connection mouth 61, carry out indoor heating.

Fluid by described outdoor heat converter 62 flows into described the 1st connection mouth 59, and by described groove 66, is imported into compressor section 26 in the described shell 25 through the suction pipe 45 of compressors from described low-pressure gas exhaust port 60.

Heat when running carrying out this, same during with cooling operation, the voltage that described electromagnet 74 is applied is controlled so as to 0, (Fig. 8 (d)).Yet, even under such state because described strut 72 is iron (magnetics), therefore, by and the attraction force of 54 of magnet components, still can keep the state of described Fig. 8 (c).

And, because the inside of the pressure ratio shell 25 in the at this moment described groove 66 is low, thus can make described valve body 53 and valve base 52 driving fits with the pressure in the shell 25, and be not easy to move.

In addition, same when dispersing spray form lubricant oil in described shell 25 and described cooling operation, separated out plate 51 by described oil and cut off, separate with high-pressure liquid simultaneously, seldom flow in described the 2nd connection mouth 61.

To the test of this fluid compression engine, for example pressure test or gas leakage test is illustrated below.

When the structure of employing conventional case (Figure 14) carries out same test, there are many owing to extend out to the pipe arrangement of the described selector valve device outside the shell 25, must be connected the gas introduction tube of test usefulness with each pipe arrangement respectively, the present invention is then because described each pipe arrangement (low-pressure gas exhaust port 60, the 1st, the 2nd connection mouth 59,61) be located on the valve base 52 with circular profile, so as long as a test of representing with 115 of Fig. 9 is connected with this valve base 52 with the gas introduction tube carriage, can be simply each the test gas introduction tube 116 that connects on this carriage 115 ... be connected with each air scoop 59～61 on the described valve base 52.

In this occasion, be located on the described carriage 115 claw 115a be formed at described valve base 52 on the groove 52b of end outer circumferential face engage.Thus described gas introduction tube 115 is connected securely with described valve base 52.

Then, from described each gas introduction tube 116 ... test is imported (in the shell 25) in this switching valve 28 with gas, can carry out pressure test or gas leakage test etc.

Adopt the embodiment's of above explanation structure, have following effect.That is, have the intensity of guaranteeing closed shell 25, the effect that realizes the high reliability running.

In the fluid compression engine of interior dress four-way valve, must guarantee to be contained in a plurality of parts of end wall on the shell and the tightness between the shell.Be difficult to welding if the upper end wall of this shell is made curved shape (dome shape), and be difficult for guaranteeing sealing therefore preferably adopting the even shape shown in the conventional case (Figure 14), yet, adopt this shape after, resistance to pressure is worsened.And the extremely low position of resistance to pressure that can form the part on described a plurality of position component is being housed.

The present invention then is mounting hole 57,90a, the 90b that is provided with 3 circles at the upper wall of described cap 25, and these 3 mounting holes 57,90a, 90b are not the central axis A of crossing over this shell 25, but disperse to be located at central axis A around, therefore, can keep strength balance, can not form local more weak position.Thereby, can prevent the breakage of shell 25, obtain having the fluid compression engine of height reliability for the pressure in the shell.In addition, when adopting the refrigeration agent of the HFC series contain R32, can increase noise, and the pressure in the shell compares during with the refrigeration agent that uses R12 or R22 and so on, influence the compressive strength of shell up to 1.5～1.7 times.Particularly, when the cap of shell is provided with a plurality of terminal, distance between terminal is narrow, pressure might concentrate on this part, cause gas leakage, but because the present invention disperses to be provided with valve base the 52, the 1st, the 2nd hermetic terminal 91a, the 91b of described switching valve portion 28 around the central axis A of described cap 25a, therefore, even when using the HFC refrigeration agent of high pressure type, also have sufficient reliability.

Described embodiment also has following effect.

The 1st, can simplify the pipe arrangement of air conditioner.

That is, open wide in described shell 25 owing to be located at the through hole 67 of described valve body 53, therefore the pipe arrangement that does not need pressurized gas to use.And the thing followed is not need the conventional high-tension gas necessary vibration control equipment of pipe arrangement.

In addition, this switching valve portion 55 is different with traditional controlling type, the electromagnetic valve device that not use work is used, so do not need the necessary capillary tube of traditional switching valve (11～12 shown in Figure 13 and Figure 14), therefore, the assembling of the compressor of interior dress switching valve becomes and carries out easily, simultaneously, can obtain simple structure, vibrate few air conditioner.

The switching valve portions 28 that adorned in the shell 25 of this compressor are different with traditional approach rotary, and the electromagnetic valve device of the usefulness of not working is so its total length can shorten.

And when described compressor stopped, described valve body 53 was because deadweight and slightly descending, thus make its with described valve base between the closed state releasing, can be rotated driving to this valve body 53 with low torque, and described magnetic force switching part 55 can miniaturization.

So, needn't increase described shell 25, can pack described switching valve portion 28 in the shell 25 of described compressor into, can fully adapt to trend toward miniaturization in recent years.

The 2nd, switching valve portion 28 is installed on welding part required on the shell 25 can be dwindled, and has improved for the reliability of gas leakage and the operation of weld job.

That is, when adopting conventional construction, the pipe arrangement that is connected with described suction pipe, indoor heat converter, outdoor heat converter (4,6,7) is to take out outside shell 24 respectively.And described four-way valve device 1 is a direct-acting type, and therefore described each pipe arrangement is arranged in shape in upright arrangement.Thereby make and shell 24 between weld length very long, be unfavorable for sealing.

And in an embodiment of the present invention, each pipe arrangement 59,60 of switching valve portion 28,61 one-tenth circle-shaped tops that are installed on are on the circular valve base 52 that stretches out outside the described shell 25, so by described valve base 52 is welded on the shell 25 and can be loaded on switching valve 28 on the shell.Can improve for the reliability of gas leakage and the operation of weld job.

The 3rd, can promptly carry out the gas equilibrium of compressor when stopping easily.

Promptly, when using traditional reciprocatory slide valve, leak in order to prevent this pressurized gas, described guiding valve must remain the driving fit with valve seat, therefore can't partly carry out gas equilibrium at this switching valve, and in compressor or expansion gear partly carry out gas equilibrium and need for a long time.

Yet, adopt when of the present invention, when stopping, described valve body is because deadweight and slightly descending, enlarged and described valve base 52 between the gap.Thereby, be located on the described valve base 52 all air scoops 59～61 through with above the described valve body 53 between the gap that produces and being communicated with, therefore can promptly carry out gas equilibrium.

In addition, in the running, because 25 pressure in the described shell makes described valve body 53 be close to described valve base 52, therefore the situation that pressurized gas leaks can not take place, and, be difficult for moving to sense of rotation.

Thereby the gas equilibrium after can promptly stopping easily, and the switching of restarting or freezing, heating after can promptly stopping simultaneously, need not to wait for for a long time that gas equilibrium can promptly inject refrigeration agent.

The 4th, can reduce the required electric power of control switching valve portion 28.

That is, because described strut 72 is made of iron, except when valve body 52 drives, even not described strut 72 magnetization, because the attraction force between this strut 72 and the described magnet component 54 also can keep switching position.

Thereby, keep the method for spool position different with traditional with spring and electromagnet, owing to do not need to apply voltage in the running, therefore can reduce power consumption to described magnetic force switching part 55.

The 5th, can carry out pressure test or gas leakage test easily safely.

Promptly, each air scoop 59～61st that is connected with described heat exchanger etc., in valve base 52 upper sheds of circle, so, get final product so that described a plurality of gas introduction tube 116 is communicated with described each air scoop 59～61 in the lump by the carriage 115 that keeps a plurality of gas introduction tubes 116 being installed on the upper end of described valve base 52.

Thereby, since do not need as conventional case from as described in shell each pipe arrangement of drawing is connected with gas introduction tube with test one by one, therefore can carry out gas leakage simply and test.

And, in this occasion, because the outer circumferential face in described valve base 52 upper end portions is provided with the groove 52b that connects usefulness, only need once-through operation can connect the carriage 115 that described gas introduction tube is used, simultaneously, can prevent effectively also in the test that this gas introduction tube 115 comes off from described valve base 52 during gas pressure change.

The 6th, can prevent effectively that the spray form lubricant oil that disperses is by described switching valve portion 28 and tell oil outside shell 25 in this shell 25.

That is, when adopting traditional structure (Figure 14), selector valve device 1 is bulky, so the flexibility when being provided with is very little, the position that pressurized gas ingress pipe 3 takes place sometimes is on the low side, or its position is near the situation of shell 24 internal faces.

Thereby the spray form lubricant oil that is full of in this shell 24 sucks in the selector valve device 1 easily, and sometimes, described lubricant oil can be told oil by this selector valve device 1 outside shell 24.

Yet as mentioned above, the switching valve 28(of portion four-way valve of the present invention) volume is small and exquisite, and respectively connects air scoop 59～61 and be arranged on the circumference compactly, so there is very high flexibility the position that is provided with of described connection mouth 59～61.

Therefore, the present invention is arranged on the 1st and the 2nd connection mouth 59,61 that becomes the pressurized gas suction side than another air scoop, is that low-pressure gas exhaust port 60 is more on the position near axle A among the shell 25.

So, as mentioned above, can reduce the amount of the lubricant oil that outside shell, spues by the 1st, the 2nd air scoop 59,61.Thereby, not only can make to keep a certain amount of lubricant oil in this fluid compression engine, can prevent that also the heat exchanging function of heat exchanger from reducing.

The 7th, the noise that takes place in the time of can reducing with HFC series refrigeration agent replacement freon.

Described HFC series refrigeration agent has easy soniferous character, and switching valve of the present invention portion 28 adopts rotation modes, compares with reciprocating manner, can reduce the switching collision noise.

In addition because this switching valve portion 28 is contained in shell 25 inside, so even noise takes place since the baffler effect of shell 25 (capacity is big, and completely cuts off with the outside.) can prevent effectively that also noise from draining to the outside.

Below in conjunction with Figure 11 the 2nd embodiment of the present invention is described.The constituting component that every and described the 1st embodiment is identical all adopts same-sign, and omits its explanation.

In described the 1st embodiment, the line (a) that connects the center of described 2 hermetic terminal 91a, 91b is parallel with the center line (b) of described switching valve portion 28, present embodiment then is to make described switching valve portion 28 rotate predetermined angular around described central shaft A, and the central shaft (b) that makes this switching valve portion 28 is line (a) and tilting relatively.

Like this, can make the described magnetic force switching valve 55(of portion actuator) near described the 2nd hermetic terminal 91b, realize the miniaturization of whole device.And, owing to realized whole miniaturization, just increased the flexibility that the position is set of described switching valve portion 28, and compare described valve base 52(the 1st mounting hole 57 with the 1st embodiment (Fig. 7)) the position is set can more moves than described the 1st, the 2nd hermetic terminal 91a, 91b to paper below.

Like this, just can be described valve base the 52, the 1st, the 2nd hermetic terminal 91a, 91b(the 1st～the 3rd mounting hole 57,90a, 90b) the more impartial central shaft A that is arranged on described shell dispersedly around.

So, can realize the intensity homogenization of described cap 25a than described the 1st embodiment better, and can prevent the breakage of this compressor.

Below in conjunction with Figure 12 the 3rd embodiment of the present invention is described.The constituting component that every and described the 1st embodiment is identical is all used same-sign, and omits explanation.

Little than among described the 1st, the 2nd embodiment of the 2nd hermetic terminal 91b in the present embodiment.And the center line (b) of described switching valve portion 28 more tilts than described the 2nd embodiment, and described magnetic force switching part 55(actuator) near the 2nd hermetic terminal 91b.

Like this, just improved the flexibility that is provided with of described switching valve portion 28 more than described the 2nd embodiment.Thereby, the mounting point of described valve base 52 is further moved to the paper below.

Like this, described the 1st, the 2nd hermetic terminal 91a, 91b and valve base 52 are positioned on roughly the isosceles triangle or equilateral triangle, the intensity that can make described cap 25a is homogenization more.

In addition, the present invention is not limited to described the 1st～the 3rd embodiment, can do all distortion in the scope that does not change the invention main points.

For example, in described embodiment, be by the magnetic force switching of magnetic force switching part 55 rotation valve body 53 freely to be done rotation to drive, but be not limited to this method, also can use other rotating driving device (actuator).

For example, can replace described magnet component 54 to be fixed in the outer circumferential face of described valve body 53, or on this valve body 53, directly form driven tooth, it be driven with servomotor with actuation gear with driven gear.

In addition, in described the 1st embodiment, be bonding with valve body 53, and give these valve body 53 reinforcings facing to valve base, but be not limited to this method with spring 78 described magnet component 54.

For example, also can establish a holding member, described valve body 53 that combines with non-adhering method and the following of described magnet component 54 are kept, and by afterburning upward to this holding member, make described valve body 53 and magnet component 54 form one, simultaneously, make described valve body 53 be close to described valve base 52.

Also have, in described embodiment, the section of groove 52a of outer circumferential face of being located at described valve base 52 upper ends is for semicircle, but is not limited to this, for example, also can be the maybe wedge shape shown in this figure (b) of the rectangle shown in Figure 10 (a).So long as can get final product with the shape that the claw 115a of gas introduction tube carriage 115 engages with described test.

In addition, in described the 1st embodiment, being to use the DC brushless motor as described motor part 27, but being not limited to this, also can be single-phase motor.

In addition, in described the 1st embodiment, described fluid compression engine is the two-cylinder type rotary compressor with 2 cylinders 35 and rotor 40, but is not limited to this, also can be the single casing rotary compressor that for example has only 1 rotor 40.

Also having, also can be that a rotation vortex wing and non-rotating vortex wing combination back form compression volume and rotate the scroll compressor that the fluid in the described compression volume is compressed by making described rotation scrollwork face toward non-rotating scrollwork.So long as the compressor of the high-pressure liquid after the envelope filled full compression gets final product.

Also have, in described the 1st embodiment, rotation shape switching valve of the present invention is a four-way switching valve, but might not be limited to four-way switching valve, can take the circumstances into consideration to use three-way switch valve, five-way switching valve or six direction changeover valves according to the situation of the device that uses this fluid compression engine.

As mentioned above, the present invention is a kind of fluid compression engine, is included in an axial end and the other end by the closed shell of the drum of obturation; The compressor section of being located in this shell, the low-pressure fluid that sucks outside shell being compressed and the high-pressure liquid after the compression is discharged in shell; Be located in the described shell, this compressor section is carried out drive electric motor portion; Be located in the described shell, reach the rotation shape switching valve that is switched towards the attraction pipe arrangement of the low-pressure fluid of described compressor section by the discharge pipe arrangement that makes the high-pressure liquid of valve body turning handle towards shell outside; And disperse to be arranged at around the central axis of this shell on the end wall of described shell and run through this shell and power supply terminal that the valve base of the described rotation shape switching valve that is fixed, power supply terminal that this switching valve is used and described drive motor are used.

Adopt such structure,, can simplify the pipe arrangement of switching valve, and can make the intensity of shell one end wall even, the reliability in the time of therefore can improving the pressure rising in the shell owing to be rotating manner.

In addition,, increased the flexibility that the position is set of valve base by actuator being arranged near on one the position in 2 terminals, and the intensity that makes described shell one end wall homogenization more.

In 3 air scoops of face opening inside and outside shell of valve base, if 2 air scoops that when refrigeration or when heating are opened wide in shell are arranged on than another air scoop more near the position of shell central shaft, just the lubricant oil that can prevent from effectively to disperse is in the enclosure told oil outside shell.

Also have, as the fluid that compresses, promptly use the very strong HFC refrigeration agent of sound transmission to come substitute CFC refrigeration agent or HCFC refrigeration agent, because switching valve is a rotary type, bruit de froissement during switching is very little, and because this switching valve is cased, so it is obvious especially to reduce the effect of noise.And help using the HFC series refrigeration agent of high pressure type.

Claims (6)

1, a kind of fluid compression engine is characterized in that, comprises

Closed shell at the blocked drum of an axial end and the other end,

Be located in this shell, to the low-pressure fluid that from shell outside, sucks compress and the high-pressure liquid after compressing be discharged to compressor section in the shell,

Be located in the described shell, to this compressor section carry out drive electric motor portion,

Be located in the described shell, by the discharge pipe arrangement that makes the high-pressure liquid of valve body turning handle towards shell outside reach the rotation shape switching valve that switched towards the attraction pipe arrangement of the low-pressure fluid of described compressor section,

Disperse to be located at around the central axis of this shell on the end wall of described shell and run through this shell and power supply terminal that the valve base of the described rotation shape switching valve that is fixed, power supply terminal that this switching valve is used and described drive motor are used.

2, fluid compression engine according to claim 1 is characterized in that,

Described rotation shape switching valve comprise an end wall that is fixed in described shell valve base,

Rotate the valve body be located at freely on that side that is positioned at described shell on this valve base,

Be fixed in described valve base and be located in the described shell, described valve body is carried out the actuator of rotating drive,

And described actuator is provided in the approaching position of power supply terminal that the power supply terminal used with the switching valve that is fixed in one of described shell end wall or described motor are used.

3, fluid compression engine according to claim 1 is characterized in that,

Described rotation shape switching valve comprise an end wall that is fixed in described shell valve base,

Rotate the valve body be located at freely on that side that is positioned at described shell on this valve base,

Be fixed in described valve base and be located in the described shell, described valve body rotated drive the less approaching position of that terminal in the power supply terminal that power supply terminal or described motor use.

4, fluid compression engine according to claim 1 is characterized in that,

Described rotation switching valve comprise the valve base that is installed on described shell,

Be located on this valve base, inside and outside the shell of this valve base the lateral opening of both sides 3 air scoops,

Rotate the valve body be located at freely on described valve base one side that has described 3 air scoops and be positioned at shell,

Be located at that relative on this valve body face with described valve base and by described valve body turn an angle connectivity slot that 2 adjacent in described 3 air scoops air scoops are interconnected,

Be located at described valve body, make the through hole that is communicated with in another air scoop and the shell,

Described valve body is carried out the actuator of rotating drive,

And be fixed in described 3 air scoops on the described valve base of described shell and be positioned at the central shaft of 2 air scoops at circumferencial direction two ends than the more approaching described shell of another air scoop.

5, fluid compression engine according to claim 1 is characterized in that, the outer circumferential face of valve base outside exposing described shell of described rotation shape switching valve is provided with the engagement portion that engages with the gas introduction tube of gas leakage test usefulness.

6, fluid compression engine according to claim 1 is characterized in that, the fluid that is full of in the described shell is a HFC series refrigeration agent.

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