Embodiment
Below, for the mode of execution involved by gas compressor of the present invention, be described with reference to accompanying drawing.
(structure)
The compressor 100 (hereinafter referred to as " compressor 100 ") of the rotating vanes of a mode of execution of gas compressor involved in the present invention, as shown in Figure 1, be the inside compressor main body 60 of refrigerant gas G (gas) the boil down to high pressure be supplied to being housed in housing 10, magnetic clutch 90 is installed in the housing 10.
This compressor 100, as utilizing the heat of vaporization of cooling medium to carry out a part for air adjustment and the system (hereinafter referred to as " air-conditioning system ") cooled to form, together with the condensed device, expansion valve, vaporizer etc. of other constituent element of this air-conditioning system, be arranged on the circulation loop of cooling medium.
Gas compressor 100, is compressed by the coolant gas G as gasiform cooling medium acquired by the vaporizer from air-conditioning system, this is supplied to air-conditioning system by the coolant gas G compressed.
Condensed device is by making to be carried out heat exchange by what compress between refrigerant gas G and ambient air etc., and makes refrigerant gas G heat release and liquefy, under high pressure as liquid refrigeration agent and deliver to expansion valve.
The refrigeration agent of liquid under high pressure, by expansion valve by low pressure, and sends to vaporizer.The liquid refrigerant of low pressure absorbs heat and gasifies in vaporizer from ambient air, is cooled vaporizer ambient air by the heat exchange of the gasification with this refrigeration agent.
The low pressure coolant gas G of gasification, gets back to compressor 100 and is compressed, below, repeating above-mentioned operation.
Housing 10 is closed by one end and the housing 11 that one end is open in addition, and the front end cap (front head) 12 of the other end of opening that covers this housing 11 is formed, by the connected element of bolt (bolt) etc., and front end cap 12 is assembled on housing 11.
Under the state that front end cap 12 is assembled to housing 11, at the formation space, inside of housing 10, within this space receive compression owner body 60 and oil separator 70.
Compressor main body 60 is so-called blade rotary compressor, to the rotation of accompanying rotation axle 51 and the refrigerant gas G in the pressing chamber that volume changes compress.
Running shaft 51 as shown in Figure 2, be supported to can around axle center C rotate, be connected with at the magnetic clutch 90 supported by the protuberance 14 of front end cap 12.
Magnetic clutch 90 is the structures possessing belt wheel 91 and rotor 92, electromagnetic coil 93 and armature 94.
Belt wheel 91 is wound with belt, accepts the input of the power of the power source from motor etc.
Rotor 92 is integrally formed with belt wheel 91, is fixed on the protuberance 14 of front end cap 12 by radial bearing (radial bearing), can rotate around the axle center C of running shaft 51.
Therefore, when belt wheel 91 accepts the input of power, belt wheel 91 is integrated with rotor 92, rotates around axle center C.
Electromagnetic coil 93 possesses the core 93a of the coil main body being wound with copper cash, is accommodated with the core shell 93b of the housing of core 93a, and the annular plate 93c engaged with the end face of core shell 93b.
Core 93a is accommodated in the state in core shell 93b, by belt wheel 91 and rotor 92 in the annulus separated, accommodated with the state that do not contact belt wheel 91 and rotor 92.
Annular plate 93c, is inserted with the protuberance 14 of front end cap 12 in its center hole 93d, by retainer 95, be fixed on protuberance 14.
External diameter (radius from the C of the axle center) S1 of annular plate 93c, is formed as follows: longer than the S2 of center radius.Described center radius is the distance of the center 93g of the core 93a shown in from axle center C to double dot dash line.
Under the state that annular plate 93c is fixed on protuberance 14, the supporting surface 13 (part shown in hatching (hatching) of Fig. 3) of the plane that the end face 93e (end face of the side of electromagnetic coil) of the side of annular plate 93c is formed with front end cap 12 touches mutually.
This supporting surface 13 as shown in Figure 3, be wherein formed as at least partially extending to described electromagnetic coil 93 with the shape by the outside of radial direction compared with the center 93g of the core 93a shown in two dot and dash line.
Specifically, in figure 3,5 part 13a of supporting surface 13,13b, 13c, 13d, 13e are formed as extending to the shape by the outside of radial direction compared with the center 93g of core 93a.
Armature 94 has interior side ring 94a, outer ring 94b and leaf spring 94c.
Interior side ring 94a is that the end of the running shaft 51 given prominence to the past end cap portions 12 is connected.
Outer ring 94b is formed than interior side ring 94a more to the shape protruding outside of radial direction, is formed by the material that friction factor is high.
Outer ring 94b, be configured to rotor 92 leave micro gap with the side wall surface of axle center C orthogonal, contact with the side wall surface of rotor 92 because of the resiliently deformable of leaf spring 94c.
Leaf spring 94c is side ring 94a and outer ring 94b in connecting, at leaf spring 94c, along in the scope of the resiliently deformable on the bearing of trend of axle center C, allow the change in location of outer ring 94b relative to interior side ring 94a.
By as above forming, being overall with armature 94, can rotating around axle center C with running shaft 51 one.
When electromagnetic coil 93 is energized, due to the magnetic flux produced, outer ring 94b be attracted to rotor 92 side and with the sidewall contact of rotor 92, the frictional force produced by the contact between outer ring 94b and the side wall surface of rotor 92, the rotation of rotor 92 is conducted to armature 94, running shaft 51 is rotated.
On the one hand, when stopping to the energising of electromagnetic coil 93, the magnetic flux of armature 94 is attracted to disappear, outer ring 94b is by the elastic restoring force of leaf spring 94c, be separated from the side wall surface of rotor 92, the rotation of rotor 92 is not conducted to armature 94, running shaft 51 non rotating.
(effect)
The compressor 100 of present embodiment as constructed as above, by the power inputted from power source, makes belt wheel 91 and rotor 92 rotate always.
Here, when the electromagnetic coil 93 of magnetic clutch 90 is not energized, armature 94 does not contact and non rotating with rotor 92, and therefore, compressor 100 does not carry out the operation of compresses refrigerant gas G.
On the one hand, when the electromagnetic coil 93 of magnetic clutch 90 is energized, the magnetic flux that electromagnetic coil 93 produces can make the outer ring 94b of armature 94 be attracted to electromagnetic coil 93, and contact with the side wall surface of rotor 92, by the frictional force produced between outer ring 94b and the sidewall of rotor 92, the outer ring 94b of armature 94 is rotated.
Thus, by leaf spring 94c, side ring 94a in being connected with outer ring 94b, also rotate integrally with outer ring 94b and leaf spring 94c, the running shaft 51 be connected with interior side ring 94a rotates, and compressor 100 carries out the operation compressed coolant gas G.
Here, the center of gravity of the entirety of electromagnetic coil 93 is axle center C, but the center of gravity of tiny segment unit along the circumferential direction, be the center 93g of core 93a.
Therefore, the 93g of the center of gravity of each several part of core 93a, be the state do not contacted with supporting surface 13, then supporting surface 13 does not support center of gravity, and having cannot by the misgivings of this partially stabilized supporting, and electromagnetic coil 93 has and overallly produces the misgivings of to rock etc.
But the compressor 100 of present embodiment, as 5 part 13a, 13b, 13c, 13d, the 13e of the part in supporting surface 13, is extend to the outside of radial direction from the center 93g of core 93a and formed.
These 5 part 13a, 13b, 13c, 13d, 13e, can support the center 93g of the center of gravity of each several part as core 93a, thus can prevent and even suppress the generation of rocking between electromagnetic coil 93 and housing 10.
In addition, in the compressor 100 of present embodiment, in supporting surface 13, more extend to the outside of radial direction than the center 93g of core 93a and the part of formation has 5, by at least 3 parts in these 5 part 13a, 13b, 13c, 13d, 13e, a plane (supporting surface 13) of the end face 93e of the annular plate 93c of the end face of supporting electromagnetic coil 93 is specified.
In addition, in supporting surface 13, than core 93a more lateral from center 93g to radial direction extend and formed part, 1 plane that end face 93e in order to the annular plate 93c of the end face to electromagnetic coil 93 supports is specified, compared with the center 93g of core 93a, extend to the more lateral of radial direction and the number of these parts formed is at least 3.
Therefore, the compressor 100 of present embodiment, compared with the center 93g of the core 93a of supporting surface 13, extend to the more lateral of radial direction and the number of these parts formed has 5, in gas compressor involved in the present invention, compared with the center 93g of core 93a, extend to the more lateral of radial direction and the number of the part formed is at least 3.
But, when the part of such supporting surface 13 respectively has an area to a certain degree, even if the part of such supporting surface 13 does not exist 3 can specify 1 plane yet, therefore supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and the number of these parts formed can have 2, also can only have 1.
In addition, in supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and 5 the part 13a formed, 3 parts in 13b, 13c, 13d, 13e (such as, part 13a, 13c, 13e), be formed on the position of the axle center C around described running shaft 51.
Axle center C is the center of gravity of the entirety of electromagnetic coil 93, becomes the position of the center of gravity of the entirety around electromagnetic coil 93 around 3 part 13a of axle center C, 13c, 13e.
Therefore, these 3 part 13a, 13c, 13e can not make electromagnetic coil 93 relative to the face run-off the straight with axle center C orthogonal, and support.
In addition, in preferred supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and 5 the part 13a, at least 3 parts in 13b, 13c, 13d, 13e that are formed, be formed the position of surrounding in equal angles interval in the axle center C of running shaft 51.
As mentioned above, in supporting surface 13, the part more extended to form near the outside of radial direction to the center 93g of core 93a is the configuration of equal angles interval, thus balance can support the entirety of electromagnetic coil 93 well.
In addition, in supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and all parts of the part of more than 3 formed (such as, 5 part 13a, 13b, 13c, 13d, 13e all) can be the configuration of equal angles interval, also can be that the part (any 3 parts such as, in 5 part 13a, 13b, 13c, 13d, 13e or any 4 parts) of the part of more than 3 in the part of more than 3 configures in equal angles interval.
The compressor 100 of above-mentioned mode of execution, in its supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and the part formed, be formed as 5 the part 13a be separated from each other around axle center C, 13b, 13c, 13d, 13e, but gas compressor involved in the present invention is not limited to this form.
That is, gas compressor involved in the present invention, in supporting surface 13, compared with the center 93g of core 93a, extending to the more lateral of radial direction and the part formed, also can be that the whole circumference around the C of axle center is continuous state.
As mentioned above, in supporting surface 13, compared with the center 93g of core 93a, extend to the more lateral of radial direction and the part formed, whole circumference around the C of axle center is continuous state, identical with above-mentioned mode of execution, can prevent and even suppress the generation of rocking between electromagnetic coil 93 and housing 10, simultaneously can be overall with the balanced support electromagnetic coil 93 of the best.
Gas compressor involved in the present invention, is not limited to the blade rotary compressor of above-mentioned mode of execution, and also can be the compressor of swash plate form, vortex form etc., its form limit.