KR800001780Y1 - Closed-type electromagnetic compressor - Google Patents

Abstract

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Description

Hermetic Electronic Drive Compressors

The drawings show an embodiment of the hermetically sealed electric drive compressor according to the present invention,

1 is a front view of cutting only the sealed container,

2 is a plan view of the cutting as seen by the arrow of FIG.

3 is a cut plan view, similarly seen with 3-3 arrows

4 is a cutaway side view similarly seen with a 4-1 arrow,

5 is a perspective view of a main part,

6 is a wiring diagram.

The present invention relates to a compressor of a so-called refrigeration equipment that compresses refrigerant gas by embedding a compressor in a sealed container, and in particular, a magnetic flux line in a magnetic pole generated between magnetic poles of a fixed electronic circuit having an induction coil as a compressor. The present invention relates to an electromagnetic drive compressor for compressing refrigerant gas by reciprocating a magnetic armature and an integrated body thereof in a direction orthogonal thereto.

In the past, an induction coil was installed, and a fixed electronic circuit acting as an electromagnet was provided to provide magnetic fields and magnetic flux generating voids between magnetic poles, and the reciprocating direction perpendicular to the magnetic flux lines in the voids is possible. The magnetic armature is installed so that the magnetic armature is properly coupled to the moving body, and the shaft is contracted to transmit the reciprocating drive force. The induction coil is connected with an AC power source for transmitting half wave-controlled forward continuous impulse. The so-called electron reciprocating light machine, in which the armature is provided with a device for imparting a stroke in another direction different from the stroke in one direction by the electronic circuit, is known even before the present application.

By the way, there is no example that this kind of electronic machine was put into practical use as a refrigerant gas compressor.

There are many factors, but the main ones are as follows.

In the conventional reciprocating compressor, the reciprocating motion of the piston plays a very important role. When the armature and stator iron cores and the center lines of the piston and the cylinder do not coincide on the same straight line, the armature receives a single load. The piston is also subjected to a single load, which adversely affects the life of the piston, and thus the cylinder and its associated members. Furthermore, in the case of a rotary drive type compressor, one end of the crankshaft of the motor is immersed in the lubricating flow rate and lubricated to the shaft bearing member according to the rotation of the shaft, so that a so-called pressure pump or screw pump lubrication method is used. Will be used.

However, since the reciprocating compressor does not have a rotating shaft in its structure, the lubrication method used in the rotary drive compressor cannot be used. Therefore, a separate lubrication pump having a complicated structure, difficult maintenance, and high manufacturing cost is installed in the compressor. It has been a problem that it must be done, which makes it impossible to obtain the structural and performance reliability.

The present invention aims to provide a hermetic compressor for compressing refrigerant gas, which is practical in general, by an electromagnetic reciprocator in view of the above problems. Specifically, the purpose of the present invention is to provide a hermetic electronic compressor that has excellent durability by sucking up lubricating oil using a gas returning into the sealed container, that is, a suction gas flow, and obtaining a lubricating oil with a simple structure for supplying quantitatively to the water storage unit. do.

In addition, the magnetic armature and its coupling body, namely the cylinder and the stator bearing the piston and the piston, do not become abnormal reciprocating movement from the center line by receiving the magnetic load by the magnetic flux lines generated between the magnetic poles of the fixed electronic circuit. It is an object of the present invention to provide a hermetic electronically driven compressor having excellent precision by easily and reliably assembling with a circuit.

In addition, the purpose which was carried out in detail describes each time as needed. Hereinafter, an embodiment of a hermetic electronic drive compressor according to the present invention will be described with reference to the drawings.

In FIG. 1, the left side of the compressor assembly 14 incorporated in the sealed container 12 is called "front side" or "front", and the right side is called "back side" or "rear".

In addition, the vertical direction orthogonal to the base axis is called "up and down", and the horizontal direction is also called "left and right".

The airtight container 12 is comprised by combining a pair of upper and lower lids 12a and 12b, and is attached to the crusts 16 and 18 provided on the lower surface of the compressor assembly 14 and this crust. Coil springs 24 and 26 are interposed between the spring seats 20 and 22 provided on the opposite lower cover 12b to elastically support the compressor assembly in a sealed container, and to attach the springs. This gives some freedom to move this compressor assembly in parallel in the axial direction.

The top cover 12a is provided with a detent 28 to restrict the compressor assembly 14 from moving more than necessary during transportation.

The compressor assembly 14, however, has a pump portion 30 on the rear side and an electromagnetic actuator 80 on the front side, as shown in FIG.

The pump section 30 has a body 36 having a cylinder 34 (fourth and fifth degrees) which forms a compression chamber 32 for compressing the refrigerant gas as shown in FIG. It is usually composed of a cylinder head and valve assembly 44 having an intake valve 40 and an exhaust valve 42 fixed to the end of 34 by a screw 38 as a third degree.

The main body 36 is provided with a pair of left and right suction chambers 46 and an exhaust chamber 58.

This suction chamber is formed by closing the top cover 50 having the suction pipe 48 which sucks the refrigerant gas in the sealed container 12 as a bolt 52, as shown in Figs. The refrigerant gas is led to the compression chamber 32 via the suction hole 54 and the suction side chamber 56 of the valve assembly 44 alone.

The exhaust chamber 58 also has a top cover 62 having an exhaust pipe 60 formed of a bolt 64 in a sealed closure state, and the refrigerant gas compressed in the compression chamber 32 is the valve assembly ( It is led to this exhaust chamber via the exhaust side chamber 66 and the exhaust hole 68 in 44. In addition, as shown in FIG. 4, the upper cover 62 of the exhaust chamber needs to be slightly lowered from the upper surface of the main body 36, and the oiled portion of the lubrication means 110, which is described later, is described later. Iii) act as an oil reservoir 122;

As shown in FIG. 5, the pair of rear projections 36a and 36b of the main body 36 are provided with attachment seats 70 of the electromagnetic actuator 80 (FIG. 2), and the attachment seats 70 are It is machined concentrically with the cylinder 34.

The fixed electronic circuit 82, which is the main constituent member of the electronic actuator unit 80, has an E-shape composed of magnetic laminated plates as shown in FIG. 5, and has a magnetic armature between the left and right pairs of magnetic poles 84,84. Cylindrical magnetic air gaps 88 are provided on the outer periphery of the armature so that 86 is sufficient to reciprocate.

A pair of left and right induction coils 90 and 90 are inserted into the magnetic poles 84 and 84, as shown in FIG. 6, and the coil is connected to the AC power source 92 and at the same time gives a positive continuous impulse. To this end, a rectifier 94 for half-wave control of an AC wave is interposed.

The magnetic armature 86 is coupled to the screw 74 so as to be integral with the reciprocating piston 72 in the cylinder 34 and is machined concentrically.

The fixed electronic circuit 82 composed of the laminated plate is provided with an attachment portion 96 for tight coupling with the attachment seat 70 of the pump body 36, and the attachment portion 96 has the cylindrical magnetic field gap. You must operate machine concentrically with (88).

In order to facilitate the machining of the attachment portion 96, a slightly thick steel plate 98 is integrally fixed to the attachment portion side of the fixed electronic circuit 82, and the attachment portion 96 is machined. Valid. Thus, the fixed electronic circuit 82 and the pump body 36 are completely concentric with respect to the cylindrical magnetic pores 88 and the cylinder 34. And (100) (FIG. 2) is an assembly bolt.

Next, the operation of the present invention will be described. When energizing the induction coil, magnetic flux is generated in the magnetic field gap 88 between the magnetic poles 84 and 84 of the fixed electronic circuit 82, and the magnetic armature 86 disposed in a direction orthogonal to this magnetic flux line; The piston 72 integrated with this armature is attracted by electrons, and a stroke in one direction, that is, forward is made.

Stroke in the other direction, ie rearward, is made by the coil spring 102 (second, third degree).

In addition, as shown in FIG. 3, the pivot axis number 108 for rotatably supporting the seat body 104 of the coil spring is the pump body 36 and the fixed electronic circuit 82 as a support of these members. It is composed integrally with.

In particular, the lubrication means 110 uses a gas flow (not shown) returning from the purifying system of the refrigerant gas, that is, a suction gas flow in the sealed container 12. As shown in FIG. 4, the return tube 112 is returned into the lubricating oil surface 114, while the distance from the oil surface 114 is a little further from the position of the return tube, that is, the closed container. A vertical tube 118 having an oil opening 116 in a very close proximity to the bottom cover 12b of (12) is circulatedly coupled to this return tube 112.

The other opening 120 of the vertical pipe 118 is led to the upper surface of the pump body 36.

That is, the collection groove 122 is formed on the upper surface of the pump body 36 (in the case of the illustration, the same position of the top cover 62 of the exhaust chamber 58), the opening in the upper portion of the collection groove 122 120 is derived.

As shown in FIGS. 3 and 4, since the opening 116 is under the oil level, a pressure difference is generated between the opening 120 on the other side, and the suction gas from the return pipe 112 is mostly the same. The other opening 120 is to be released into the sealed container 12.

At that time, the refrigerant gas is bubbled in the oil, and the oil in the vertical pipe 118 is lightened and ejected upward. The refrigerant gas is dropped into the collecting groove 122 through the other opening 120 and stored. Let's do it.

An oil guide groove 124 is installed on the upper surface of the pump body 36 as shown in FIGS. 4 and 5, and is lubricated on the lubricating surfaces of the cylinder 34 and the piston 72.

Although a method of laying oil supply holes connected to one end of the cylinder 34 on the upper surface of the pump body 36 is also possible, in this case, dropping of oil may be hindered by leakage gas pressure in the compression chamber 32. Therefore, it should be drilled at a position as far as possible from this compression chamber.

In the embodiment, the dropping method is adopted on the wall surface 126 of the pump main body 36 orthogonal to the axial direction of the cylinder 34. In this method as well, the lubricating effect and the cooling effect are appropriately performed without any inferiority. Function was performed.

The piston 72 is provided with a pair of oil grooves 72a and 72b, respectively, before and after, as in the fifth diagram, but the electron 72a is a cylinder during the forward stroke of the piston 72. It is effective to allow the dropping lubricating oil to enter the inside of this cylinder in a position falling in the range of the number of shafts of (34), and the latter serves as a collecting groove and is effective in enclosing the leakage gas in the compression chamber 32.

Since the action on the details has been described so far, it may be omitted.

The piston 72 integrally coupled with the magnetic armature 86 by the interaction of the electromagnetic attraction force between the fixed electronic circuit 82 and the magnetic armature 86 and the elastic force of the suction spring 102 is a pump body ( It reciprocates in the cylinder 34 of 36, and the refrigerant gas in the compression chamber 32 repeats the state of roughness.

That is, when the refrigerant in the compression chamber is compressed and exhausted, the electromagnetic suction force acts to cause the piston 72 to electromagnetically suck forward, and the suction valve 40 of the valve assembly 44 opens toward the compression chamber. The refrigerant gas in the sealed container 12 is introduced into the compression chamber through the suction chamber 46. On the other hand, when the piston shifts under the force of the coil spring 102, the piston 72 retreats and the intake valve 40 is closed. On the contrary, when the refrigerant gas in the compression chamber 32 becomes rich, the exhaust valve 42 Is opened and the compressed gas is exhausted through the exhaust chamber (58), through the exhaust pipe (60), and out of the sealed container (12), and continues in a circulation of a suitable refrigerant refrigeration cycle.

The refrigerant gas that has passed through these refrigeration cycles is returned to the sealed container 12 in the return pipe 112. In this return process, the function of sucking up the lubricant is as described above.

According to the hermetic electromagnetic drive compressor according to the present invention, at least the following various effects can be sufficiently exhibited.

First, since the center line between the cylinder 34 and the fixed electronic circuit 82 is perfectly formed by the attachment seat 70 and the attachment portion 96, the piston 72 and the armature 86 coupled thereto are very stable reciprocating. Because of the movement, there is no problem such that the armature 86 receives a single load and its adverse effects shorten the life of the piston and its associated members.

Secondly, once the attachment seat 70 of the main body 36 and the attachment portion 96 of the fixed electronic circuit 82 are coupled together, there are more problems than necessary for centerline alignment between the main body 36 and the fixed electronic circuit 82. Is eliminated and the advantage is very simple to operate the compressor of the present invention.

Third, the method of lubricating the related member by using the pressure difference generated between the two openings 116 and 120 of the vertical pipe 118 has a superior effect than the lubrication method through the crankshaft of the conventional rotary motor, so the hermetic refrigerant compressor Ensures a long service life.

Fourth, the lubricating oil dripping from the upper opening 120 of the vertical pipe 118 is collected in the oil reservoir 122 where the lubricating oil formed on the main body 36 is collected. From the sliding surface of the piston. And even if the above-mentioned oil supply is intermittently dripped, since the lubricating oil which flows in the collection groove 122 flows and is supplied with oil, it is lubricated equally to the related member.

Fifth, the lubricating oil accumulated in the collecting groove 122 located above the exhaust chamber 58 is heated as the temperature of the compressed gas supplied from the compression chamber 32 to the exhaust chamber 58 increases, so that the collecting groove 122 Even if there are gases contained in the lubricating oil of), they are all removed from the lubricating oil. In other words, since the gas contained in the lubricating oil in the collecting groove 122 is completely separated and the separated gas is guided to the compression chamber 32 through the suction pipe 48, the problem of lubricating oil flowing into the gas circulation system can be effectively prevented. Can be.

On the other hand, there is no gas in the lubricating oil supplied to the piston, and therefore there is virtually no gas in the lubricating oil inside the sealed container 12. If gas is contained in the lubricating oil, a large number of bubbles are generated as the compressor operates, and as a result, these bubbles are filled in the sealed container 12, thereby easily causing lubricating oil to flow into the gas circulation system.

Sixth, the compressor structure of the present invention is very simple and compact, so even if it is installed in a refrigerator, for example, it occupies a narrow space, which is very advantageous.

Seventh, compared with the conventional rotary compressor, the compressor of the present invention has a very small number of mechanical parts, thereby reducing manufacturing costs and making machine maintenance very easy.

Claims (1)

In the sealed container 12, the magnetic armature 86 which is integrally coupled with the piston 72 across the perpendicular direction to the magnetic flux generated between the magnetic poles 84 and 84 of the fixed electronic circuit 82 is attracted by electrons. A compressor assembly (14) comprising an electric drive unit (80) which is reciprocated and doubled by mechanical return means, and a pump unit (30) for compressing refrigerant gas. At least in parallel to the base axis direction of the compressor assembly 14, the pump body 36 of the fixed electronic circuit 82 and the pump unit 30 is elastically supported so as to provide a range of freedom of movement. Is a cylindrical magnetic cavity 88 in which the former magnetic armature 86 is attracted electrons, and the latter piston 72 is provided with an mutual coupling portion. Each center point is formed in the same straight line by being formed in congruence with the sliding cylinder 34. In the known one, the return pipe 112 of the refrigerant gas returning into the sealed container 12 has a vertical pipe 118 whose one end is opened at the lubrication flow rate and the other end is opened at the upper surface of the pump body 36. It is coupled to the fluid conductive to the sealed refrigerant-driven compressor characterized in that the lubricating oil is sucked up to the upper surface of the pump body (36) by the return refrigerant gas and lubrication and cooling of the bearing portion by dropping oil supply.