KR20190002971A - Compressor - Google Patents

Abstract

The present invention relates to a compressor which includes: a casing; a compression mechanism provided inside the casing and compressing the refrigerant; a rotary shaft for transmitting rotational force from a driving source provided outside the casing to the compressor; a clutch for connecting the driving source and the rotary shaft when a power source is applied, and for separating the driving source and the rotary shaft from each other when the power is interrupted; and rotation measuring means for receiving a magnetic force from the clutch and measuring a rotational speed of the rotary shaft by measuring a change in magnetic flux with rotation of the rotary shaft. Therefore, the rotational speed of the rotary shaft can be measured without including the permanent magnet. In addition, the sensor mounting groove on which the sensor of the rotation measuring means is mounted is formed to be in communication with the outside of the casing and to be blocked from the inside of the casing, thereby preventing refrigerant leakage due to the rotation measuring means. In addition, by including a fixing means for fixing the rotation measuring means, the cost and time required for installing the rotation measuring means can be reduced, and the rotation measuring means can be prevented from being released during operation.

Description

COMPRESSOR

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor, and more particularly, to a compressor capable of measuring a rotational speed of a rotational shaft for transmitting rotational force from a drive source to a compressor orifice.

Generally, an automobile is provided with an air conditioner (A / C) for cooling and heating the room. Such an air conditioner includes a compressor that compresses gaseous low-temperature and high-pressure gaseous refrigerant introduced from an evaporator into gaseous refrigerant of high temperature and high pressure and sends it to a condenser.

The compressor includes a reciprocating type compressing the refrigerant according to the reciprocating movement of the piston, and a rotary type compressing while rotating. In the reciprocating type, there are a crank type which uses a crank according to a transmission method of a drive source and a crank type which transmits the same to a plurality of pistons, a swash plate type which transmits a swash plate with a swash plate type rotary shaft, a vane rotary type using a rotary shaft, There are scrolling expressions using orbiting scroll and fixed scroll.

Such a compressor typically includes a rotating shaft for transmitting rotational force to a compressor means for compressing the refrigerant.

Specifically, referring to Japanese Patent Publication No. 2715544, a conventional compressor includes a casing, compression mechanisms (11, 13) provided inside the casing and compressing the refrigerant, a driving source provided outside the casing A rotating shaft 4 for transmitting a rotational force from the engine 1 to the compression mechanism 11 and 13 and a clutch for selectively connecting and disconnecting the driving source and the rotating shaft 4.

The clutch includes a pulley (not shown) rotated by receiving power from the driving source, a disc hub assembly (not shown) coupled to the rotating shaft 4 and selectively contacting and spacing the pulley, and a magnetic force A field coil assembly (9) for contacting the pulley with the disc hub assembly, and a field coil assembly (9) which is spaced apart from the pulley when the field coil assembly (Not shown).

The pulley and the drive source are connected to each other by a drive belt for receiving power from the drive source.

However, when a problem occurs in the compressor, the pulley receives power from the driving source, but the hub assembly may not rotate normally when the pulley and the disc hub assembly contact each other.

In this case, slippage may occur in the driving belt connected to the pulleys of the driving source and the compressor, and the driving source as well as the compressor may be damaged.

Therefore, in order to prevent such a belt slip, the rotation speed of the drive source is compared with the rotation speed of the compressor to stop the clutch when a problem occurs in the compressor.

In consideration of this, the conventional compressor is provided with rotation measuring means including a permanent magnet 17 mounted to be rotated together with the rotation shaft and a sensor 18 measuring a magnetic flux change of the permanent magnet 17, The rotational speed of the rotating shaft 4 is measured.

However, in such a conventional compressor, the rotation measuring means includes the permanent magnet 17. As a result, the inertia of the rotating body is increased, the balance of the rotating body is unstable, noise and vibration are deteriorated, and the bearing supporting the rotating body is damaged. In addition, when the permanent magnet is rotated, the size of the compressor must be increased to prevent the permanent magnet from colliding with other parts, and the weight and cost of the compressor are deteriorated due to the increase of the size of the permanent magnet and the size of the compressor.

Further, since the sensor 18 of the rotation measuring means is installed through the casing, there is a problem that the refrigerant leaks through the through-hole of the casing for installing the sensor.

Further, there is a problem that it takes a considerable cost and time to install the rotation measuring means to prevent the leakage of the refrigerant.

In addition, there has been a problem that the rotation measuring means deviates during operation.

Japanese Patent Publication No. 2715544

Therefore, it is an object of the present invention to provide a compressor capable of measuring the rotational speed of a rotating shaft without including a permanent magnet.

Another object of the present invention is to provide a compressor capable of preventing refrigerant leakage due to rotation measuring means for measuring the rotational speed of a rotating shaft.

Another object of the present invention is to provide a compressor which can reduce the cost and time required for installing the rotation measuring means.

It is still another object of the present invention to provide a compressor capable of preventing the rotation measuring means from being released during operation.

In order to achieve the above-mentioned object, the present invention is characterized by comprising: a casing; A compression mechanism provided inside the casing and compressing the refrigerant; A rotating shaft for transmitting rotational force from a driving source provided outside the casing to the compressor; A clutch for connecting the driving source and the rotating shaft when a power source is applied, and for separating the driving source and the rotating shaft from each other when the power is interrupted; And rotation measuring means for receiving a magnetic force from the clutch and measuring a change in magnetic flux with rotation of the rotation shaft to measure a rotation speed of the rotation shaft, Wherein the sensor mounting groove is formed on the outer surface of the casing and includes fixing means for fixing the rotation measuring means to the sensor mounting groove.

Wherein the compression mechanism includes: a swash plate coupled to the rotation shaft in an inclined manner and rotated together with the rotation shaft; A piston received in the bore of the casing and coupled to the swash plate and reciprocating within the bore by rotation of the swash plate; And a tilt adjusting mechanism that adjusts the tilt angle of the swash plate with respect to the rotating shaft so as to vary a compression capacity, wherein the tilt adjusting mechanism is coupled to the rotating shaft to rotate together with the rotating shaft when the clutch is magnetized, And the rotation measuring means may include a hall effect sensor for measuring the magnetic flux of the rotor.

The Hall sensor may be formed adjacent to the rotor.

The Hall sensor may be disposed within a range of magnetic force lines formed between the clutch and the rotor.

The fixing means may be formed to be fixed when the hall sensor is inserted into the sensor mounting groove.

At least one hook is formed in the hall sensor, and at least one of the casing and the clutch may be formed with a hook groove into which the hook is inserted.

The hall sensor and the hook may be integrally formed.

Wherein the clutch comprises: a pulley that receives power from the drive source and is rotated; A disk hub assembly coupled to the rotating shaft and selectively in contact with and spaced from the pulley; A field coil assembly for generating a magnetic force when the power is applied to bring the pulley into contact with the disc hub assembly; And a spacing means for spacing the pulley from the disc hub assembly when the field coil assembly is powered off and the field coil assembly loses its magnetic force, the field coil assembly comprising: a coil housing; And a coil housed in the coil housing and generating an electromagnetic force when power is applied, wherein the coil housing includes a flange portion protruding from the coil housing and facing the sensor mounting groove, A sensing part interposed between the sensor mounting groove and the flange part; And a fixing part protruding from the sensing part and positioned on the opposite side of the sensing part with respect to the flange part.

A first hook protruding toward the flange portion is formed on the fixing portion, and a first hook groove into which the first hook is inserted may be formed in the flange portion.

The sensing portion may have a second hook protruding toward the sensor mounting groove, and the sensor mounting groove may have a second hook groove into which the second hook is inserted.

Wherein when the hall sensor is inserted into the sensor mounting groove, the first hook is inserted into the first hook groove, the second hook is inserted into the second hook groove, When the first hook is released from the first hook groove, the second hook can be held inserted into the second hook groove.

A compressor according to the present invention includes: a casing; A compression mechanism provided inside the casing and compressing the refrigerant; A rotating shaft for transmitting rotational force from a driving source provided outside the casing to the compressor; A clutch for connecting the driving source and the rotating shaft when a power source is applied, and for separating the driving source and the rotating shaft from each other when the power is interrupted; And rotation measuring means for receiving a magnetic force from the clutch and measuring a change in magnetic flux with rotation of the rotation shaft to measure a rotation speed of the rotation shaft. Thereby, the rotational speed of the rotating shaft can be measured without including the permanent magnet. Thus, increase in inertia of the rotating body and destabilization of the balance are prevented, noise and vibration deterioration can be prevented, and damage to the bearing supporting the rotating body can be prevented. In addition, it is possible to prevent the size, weight, and cost of the compressor according to the permanent magnet from deteriorating.

Further, the present invention is configured such that the sensor mounting groove on which the sensor of the rotation measuring means is mounted communicates with the outside of the casing, but is blocked from the inside of the casing, so that the refrigerant leakage due to the rotation measuring means can be prevented.

In addition, the present invention includes the fixing means for fixing the rotation measuring means, so that the cost and time required for installing the rotation measuring means can be reduced.

In the present invention, as the fixing means, a first hook H11 and a second hook H21 are formed in the hall sensor, and a first hook groove H12 into which the first hook H11 is inserted is formed in the clutch And the second hook groove (H22) in which the second hook (H21) is inserted is formed in the casing, it is possible to prevent the rotation measuring means from being released during operation.

1 is a cross-sectional view of a compressor according to an embodiment of the present invention,
FIG. 2 is a graph showing magnetized portions and lines of magnetic force when a coil is powered on in the compressor of FIG. 1;
3 to 5 are sectional views showing a compressor according to another embodiment of the present invention,
6 is a cross-sectional view of a compressor according to another embodiment of the present invention,
Fig. 7 is an exploded perspective view showing the hall sensor mounting portion in the compressor of Fig. 6,
FIG. 8 is a perspective view of the Hall sensor of FIG. 7,
9 is a cross-sectional view of a compressor according to another embodiment of the present invention,
10 is an exploded perspective view showing the hall sensor mounting portion in the compressor of FIG. 9,
11 is a perspective view of the Hall sensor of FIG. 10 viewed from below.

Hereinafter, a compressor according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view illustrating a compressor according to an embodiment of the present invention, and FIG. 2 is a chart showing a magnetization part and a magnetic force line when power is applied to a coil in the compressor of FIG.

1 and 2, a compressor according to an embodiment of the present invention includes a casing 1, a compression mechanism 2 provided inside the casing 1 and compressing a refrigerant, (Not shown) provided on the outside of the driving mechanism (not shown) for transmitting the rotational force from the driving mechanism (not shown) to the compression mechanism 2 and the driving source And a clutch 4 for connecting and disconnecting the clutch 4 to and from the vehicle.

The compression mechanism 2 may be formed in various ways such as a swash plate type including a swash plate and a piston, and a scroll type including a revolving scroll and a non-orbiting scroll, but may be formed in a swash plate type in the present embodiment. That is, the compression mechanism 2 according to the present embodiment includes a piston 21 provided so as to be capable of reciprocating within the bore, a piston 21 coupled to the rotary shaft 3, rotated together with the rotary shaft 3, 21 for reciprocating motion.

One end of the rotary shaft 3 is connected to the compression mechanism 2 and the other end of the rotary shaft 3 protrudes outside the casing 1 through the casing 1, Can be fastened to the assembly (42).

The clutch 4 includes a pulley 41 that is rotated by receiving power from the driving source (not shown), a disk hub assembly 42 (not shown) which is engaged with the rotation shaft 3 and selectively in contact with and spaced from the pulley 41 A field coil assembly 43 for contacting the pulley 41 with the disk hub assembly 42 when a power is applied and a field coil assembly 43 (Not shown) that separates the pulley 41 from the disk hub assembly 42 when the magnetic force is lost.

The pulley 41 is formed in a substantially annular shape and a driving belt (not shown) is mounted on the outer circumferential surface of the pulley 41 to transmit a driving force from the driving source (not shown) to the pulley 41. And a bearing 44 for rotatably supporting the pulley 41 is interposed between the inner circumferential surface of the pulley 41 and the outer surface of the casing 1 .

One surface of the pulley 41 is formed with a friction surface 414 which can contact the disk 424 of the disk hub assembly 42 to be described later, A field coil assembly receiving groove 415 into which the field coil assembly 43 is inserted can be formed.

The disk hub assembly 42 may include a hub 422 coupled to the rotating shaft 3 and a disk 424 extending from the hub 422 and selectively contacting and spacing the pulley 41 have.

The field coil assembly 43 may include a coil housing 432 and a coil 434 housed in the coil housing 432 and generating an electromagnetic force upon power application.

The spacing means (not shown) may be formed of an elastic member that forces the disc hub assembly 42 in a direction away from the pulley 41.

The compressor according to this embodiment according to this configuration can be operated as follows.

That is, the pulley 41 may be rotated by receiving a driving force from the driving source (not shown).

In this state, when the coil 434 is powered, the disk hub assembly 42 is moved toward the pulley 41 by the attraction force of the coil 434 by the magnetic induction of the coil 434, Can be brought into close contact with each other. The disk hub assembly 42 and the pulley 41 are coupled so that the power of the driving source is transmitted to the rotary shaft 3 through the pulley 41 and the disk hub assembly 42. [ . The rotary shaft (3) can compress the refrigerant by operating the compression mechanism (2) with the transmitted power.

When the power supply to the coil 434 is stopped, the suction force by the magnetic induction of the coil 434 is not generated, and the disk hub assembly 42 is rotated by the separating means (not shown) It can be moved away from the pulley 41 and spaced apart from the pulley 41. [ That is, power transmission from the driving source (not shown) to the rotating shaft 3 can be interrupted. Then, the compression mechanism (2) is stopped, and the refrigerant compression can be stopped.

When the disk hub assembly 42 and the pulley 41 are brought into contact with each other in a state where the rotation speed of the disk hub assembly 42 and the rotation speed of the pulley 41 are different from each other, 42 and the pulley 41 to generate noise and vibration or to prevent the drive belt (not shown), the pulleys 41, Damage to at least one of the driving source (not shown) and the compressor may occur. The pulley 41 and the driving source are connected to each other by a driving belt (not shown) to receive power from the driving source (not shown).

However, when a problem occurs in the compressor, the pulley 41 receives power from the driving source, but the hub assembly 22 may not rotate normally when the pulley and the disk hub assembly 22 are in contact with each other .

In this case, slippage may occur in the driving belt connected to the pulley 41 of the driving source and the compressor, and the driving source as well as the compressor may be damaged.

In order to prevent such a problem, the compressor according to the present embodiment may include a rotation measuring means 5 for measuring the rotation speed of the rotary shaft 3. [

Here, the rotation measuring means 5 may be configured to measure the rotational speed of the rotating shaft 3 without including the permanent magnet.

2, when the clutch 4 is magnetized, a component (for example, a rotor 232 to be described later), which is rotated together with the rotation shaft 3 and the rotation shaft 3, ) Was also magnetized (the red area of the drawing).

The rotation measuring means 5 includes a hall effect sensor for measuring a change in magnetic flux caused by the rotary shaft 3 to be magnetized or a change in magnetic flux caused by a component rotated together with the rotary shaft 3, (Not shown). That is, the rotation measuring means 5 does not include a permanent magnet, and does not measure a magnetic flux change caused by the permanent magnet.

Accordingly, the compressor according to the present embodiment is capable of increasing the inertia of the rotating body due to the permanent magnet, deteriorating the balance of the rotating body, deteriorating the noise vibration, bearing damage supporting the rotating body, refrigerant leakage, increasing the size of the compressor, And the cost increase of the compressor can be prevented.

The Hall sensor 52 is preferably configured to measure a magnetic flux change caused by a component rotated together with the rotary shaft 3 as in the present embodiment, rather than being configured to measure a magnetic flux change by the rotary shaft 3 can do.

More specifically, the accuracy of the Hall sensor 52 can be improved as it approaches the measurement object.

The hole sensor 52 is preferably disposed adjacent to the rotation shaft 3 when the magnetic sensor 4 measures the change in magnetic flux by the rotation shaft 3, It is more preferable to be provided within the range of the magnetic force line formed between the magnetic force lines. However, in this case, the diameter of the rotation shaft 3 is relatively small, and the hall sensor 52 can be adjacent to the rotation shaft 3 only when the Hall sensor 52 is fixed to the inner space center side of the casing 1, It is not easy to fix the hole sensor 52 to the center of the inner space of the rotary shaft 3 and the magnetic force line range formed between the clutch 4 and the rotary shaft 3 is narrow, It may not be easy to arrange the sensor 52 in a position where the accuracy of the sensor 52 can be improved.

On the other hand, when the Hall sensor 52 is formed to measure a magnetic flux change caused by a component rotated together with the rotary shaft 3, the Hall sensor 52 can be easily placed at a position capable of improving the accuracy of the hall sensor 52 . The inclination adjustment mechanism 23 adjusts the inclination angle of the swash plate 22 with respect to the rotation axis 3 to adjust the compression capacity when the swash plate is formed in the swash plate as in the present embodiment. The rotor 23 is magnetized when the clutch 4 is magnetized and the Hall sensor 52 is magnetized when the clutch 4 is magnetized. The rotor 232 rotates together with the rotation shaft 3, The magnetic flux of the magnetized rotor 232 is measured. Specifically, when the rotor 232 is not circular but bisected by the center, the first region (hatched region) and the second region (non-patterned region) have different radii, and the bisection boundary is protruded. When the rotor 232 rotates, a magnetic flux change occurs due to the protruding area, which is detected and measured by the hall sensor 52.

The Hall sensor 52 may be disposed adjacent to the rotor 232 to measure a change in magnetic flux by the rotor 232 and may be disposed between the clutch 4 and the rotor 232. [ It is more preferable to be installed within the range of magnetic force lines formed in the magnetic field lines. In this case, the diameter of the rotor 232 is relatively large, so that even if the hall sensor 52 is fixed to the casing 1, the rotor 232 can be adjacent to the rotor 232, It is much easier to arrange the Hall sensor 52 at a position where the accuracy of the hall sensor 52 can be improved because the range of magnetic force lines formed between the rotors 232 is relatively wider. Particularly, if the hall sensor 52 is installed in a region where the magnetization region (red region) as shown in FIG. 2 is overlapped, it is preferable to arrange the Hall sensor 52 in the upper housing of the rotor 232. If the rotor 232 is positioned closer to the clutch 4 than the rotor 232, the Hall sensor 52 will measure the magnetization state of the clutch 4, not the rotor 232, It is hard to judge. Therefore, it is preferable that the hall sensor 52 is disposed close to the rotor 232 even when the Hall sensor 52 is disposed between the clutch 4 and the rotor 232. [

The hall sensor 52 is installed in a sensor mounting groove 12 formed in the casing 1. The sensor mounting groove 12 may be formed to be engraved from the outer surface of the casing 1. [ That is, the sensor mounting groove 12 may be formed so as to communicate with the outside of the casing 1 and be shielded from the inside of the casing 1. Thus, leakage of the refrigerant by the sensor mounting groove 12 can be prevented. That is, since the sensor mounting groove 12 is formed so as not to penetrate the casing 1, it is possible to prevent the refrigerant from leaking from the inside of the casing 1 to the outside through the sensor mounting groove 12 .

Here, in the present embodiment, the sensor mounting groove 12 is formed so as not to penetrate the casing 1 so as to prevent the refrigerant leakage by the sensor mounting groove 12 in advance. However, for example, When the refrigerant leakage by the sensor mounting groove 12 is not a concern or the refrigerant leakage through the sealing member or the like is easy to prevent, the sensor mounting groove 12 is formed in the casing 12 as shown in FIG. 3 or FIG. (Not shown). In this case, the Hall sensor 52 can be disposed closer to the rotor 232, so that the accuracy of the hall sensor 52 can be improved.

In the present embodiment, the hole sensor 52 is interposed between the clutch 4 and the rotor 232 to maximize the accuracy of the Hall sensor 52, but the clutch 4 and the rotor 232 may be narrow, the installation of the hall sensor 52 may not be easy. 4 or 5, the Hall sensor 52 may be disposed radially outward of the rotor 232. In this case, In this case, the accuracy of the Hall sensor 52 is somewhat lowered, but the Hall sensor 52 can be easily installed.

Meanwhile, in the present embodiment, the hall sensor 52 is inserted into the sensor mounting groove 12, and the hall sensor 52 may be removed from the sensor mounting groove 12 during operation. 6 to 11, fixing means for fixing the hall sensor 52 to the sensor mounting groove 12 may be provided.

6 is an exploded perspective view of a compressor according to another embodiment of the present invention, FIG. 7 is an exploded perspective view of a compressor of FIG. 6, and FIG. 8 is a cross- As shown in FIG. 9 is an exploded perspective view of a compressor according to another embodiment of the present invention, FIG. 10 is an exploded perspective view of a compressor of FIG. 9, and FIG. 11 is a cross- As shown in FIG.

6 to 8, the compressor according to the embodiment shown in FIG. 6 to FIG. 8 may be provided with a plurality of holes (not shown) to prevent the hole sensor 52 from being detached from the sensor mounting groove 12 during operation. And fixing means for fixing the hall sensor 52 to the sensor mounting groove 12.

Unlike the embodiment shown in Figs. 6 to 8, the fixing means may be formed of a separate fastening member, for example, a bolt. That is, after the hole sensor 52 is inserted into the sensor mounting groove 12, the hole sensor 52 may be fixed to the sensor mounting groove 12 by fastening the separate fastening member. However, in this case, it may take a considerable cost and time to fix the hole sensor 52 to the sensor mounting groove 12 with a separate fastening member and separate fastening members.

In view of this, the fixing means according to the embodiment shown in FIGS. 6 to 8 may be configured such that the fixing means fixes the hole sensor 52 to the hole sensor 52, And may be formed to be fixed when inserted into the sensor mounting groove 12. That is, a first hook H11 is formed in the hall sensor 52 so that the hall sensor 52 is fixed to the sensor mounting groove 12 at a time, and the first hook H11 is formed in the clutch 4, The first hook groove H12 into which the hook H11 is inserted can be formed.

More specifically, the sensor mounting groove 12 may be formed to open toward the clutch 4 side.

The coil housing 432 of the clutch 4 may include a flange portion 436 protruding from the coil housing 432 and opposed to the opening of the sensor mounting groove 12.

The flange portion 436 may be formed with the first hook groove H12 passing through the flange portion 436 at the tip end thereof.

The hall sensor 52 includes a sensing portion 522 that is inserted into the sensor mounting groove 12 and interposed between the sensor mounting groove 12 and the flange portion 436 and the sensing portion 522 And a fixing portion 524 protruded from the flange portion 436 and positioned on the opposite side of the sensing portion 522 with respect to the flange portion 436.

The first hook H11 protruding toward the sensing portion 522 may be formed at the distal end of the fixing portion 524. [ The fixing portion 524 and the first hook H11 may be integrally formed to reduce the cost and time required to form the first hook H11 and the fixing portion 524. [

According to this configuration, when the hall sensor 52 is inserted into the sensor mounting groove 12, the first hook H11 is engaged with the first hook groove H12 and is inserted into the sensor mounting groove 12 Can be fixed. This prevents the hole sensor 52 from being detached from the sensor mounting groove 12 during operation and also allows the hole sensor 52 to be fixed to the sensor mounting groove 12 with a small time and cost .

6 to 8, the first hook H11 is formed in the hole sensor 52, and the first hook groove H12 is formed in the clutch 4. In the embodiment shown in FIGS. However, the present invention is not limited thereto, and the first hook H11 may be formed in the clutch 4, and the first hook groove H12 may be formed in the hole sensor 52. [

6 to 8, in order to prevent the occurrence of a fragile portion in the casing 1 and to reduce the cost and time required for forming the first hook groove H12, The flange portion 436 is formed in the coil housing 432 of the clutch 4 and the flange portion 436 is formed with the mounting groove 12 open toward the clutch 4 side, 1 hook grooves H12 are formed. However, the present invention is not limited to this, and the sensor mounting groove 12 may have a partition wall (a part of the casing) formed between the clutch 4 and the sensor mounting groove 12, The first hook H11 may be detached from the first hook groove H12 by vibration or the like during operation. In this case, The hole sensor 52 may be detached from the sensor mounting groove 12. 9 to 11, even if the first hook H11 inserted into the first hook groove H12 is separated from the first hook groove H12, the hole sensor 52 Can be prevented from being detached from the sensor mounting groove 12.

9 to 11, the compressor according to the embodiment shown in Figs. 9 to 11 includes the first hook H11 and the first hook H11, as in the embodiment shown in Figs. 6 to 8, A second hook H21 formed in the sensing portion 522 and a second hook groove H22 in which the second hook H21 is inserted into the sensor mounting groove 12, .

The second hook H21 may protrude from the sensing portion 522 toward the sensor mounting groove 12 side. Here, the second hook H21 may be formed on the opposite side of the fixing portion 524 with respect to the sensing portion 522.

The second hook groove (H22) may be engraved from the sensor mounting groove (12).

According to this configuration, the hole sensor 52 can be fixed to the sensor mounting groove 12 at a time as described above. The first hook H11 is inserted into the first hook groove H12 and the second hook H21 is inserted into the second hook groove H22 when the first hook H11 is inserted into the sensor mounting groove 12, As shown in FIG.

The hole sensor 12 is configured such that the first hook H11 is coupled to the first hook groove H12 to be fixed to the sensor mounting groove 12 and the second hook H21 is fixed to the sensor mounting groove 12, And can be more firmly fixed to the sensor mounting groove 12 by being engaged with the second hook groove H22.

Even if the first hook H11 inserted into the first hook groove H12 is released from the first hook groove H12 during operation, the second hook H21 is engaged with the second hook groove H12 H22), the hole sensor 52 can be prevented from being detached from the sensor mounting groove 12.

9 to 11, the second hook H21 is formed in the hall sensor 52 and the second hook groove H22 is formed in the sensor mounting groove 12 do. However, the present invention is not limited thereto. The second hook H21 may protrude from the sensor mounting groove 12, and the second hook groove H22 may be formed in the hall sensor 52.

Meanwhile, only the second hook H21 and the second hook groove H22 may be formed without the first hook H11 and the first hook groove H12, though not separately shown.

1: casing 2: compression mechanism
3: rotating shaft 4: clutch
5: rotation measuring means 12: sensor mounting groove
21: piston 22: swash plate
23: inclination adjustment mechanism 41: pulley
42: Disk hub assembly 43: Field coil assembly
52 Hall sensor 232 Rotor
43: coil housing 436: flange portion
522: sensing section 524:
H11: first hook H12: first hook groove
H21: second hook H22: second hook groove

Claims (11)

A casing (1);
A compression mechanism (2) provided in the casing (1) and compressing the refrigerant;
A rotating shaft (3) for transmitting rotational force from a driving source provided outside the casing (1) to the compression mechanism (2);
A clutch (4) for generating a magnetic force when a power source is applied to connect the driving source and the rotary shaft (3), and separating the driving source and the rotary shaft (3) And
And rotation measuring means (5) for receiving a magnetic force from the clutch (4) and measuring a change in magnetic flux with rotation of the rotation shaft (3) and measuring a rotation speed of the rotation shaft (3)
The rotation measuring means (5) is seated in a sensor mounting groove (12) formed in the casing (1)
The sensor mounting groove (12) is formed on an outer surface of the casing (1), and includes a fixing means for fixing the rotation measuring means (5) to the sensor mounting groove (12). The method according to claim 1,
The compression mechanism (2)
A swash plate 22 inclined to the rotary shaft 3 and rotated together with the rotary shaft 3;
A piston 21 housed in the bore of the casing 1 and coupled to the swash plate 22 and reciprocating within the bore by rotation of the swash plate 22; And
And a tilt adjusting mechanism (23) for adjusting the tilt angle of the swash plate (22) with respect to the rotating shaft (3) to vary the compression capacity,
The inclination adjusting mechanism 23 includes a rotor 232 which is coupled to the rotating shaft 3 and is rotated together with the rotating shaft 3 when the clutch 4 is magnetized,
Wherein the rotation measuring means (5) comprises a hall effect sensor (52) for measuring the magnetic flux of the rotor (232). 3. The method of claim 2,
Wherein the Hall sensor (52) is formed adjacent to the rotor (232). The method of claim 3,
Wherein the Hall sensor (52) is disposed within a range of magnetic force lines formed between the clutch (4) and the rotor (232). The method according to claim 1,
Wherein the fixing means is formed to be fixed when the hall sensor (52) is inserted into the sensor mounting groove (12). 6. The method of claim 5,
At least one of the hooks H11 and H21 is formed in the hall sensor 52 and at least one of the casing 1 and the clutch 4 is provided with hook grooves H12, H22). The method according to claim 6,
Wherein the hall sensor (52) and the hooks (H11, H21) are integrally formed. The method according to claim 6,
The clutch (4) includes a pulley (41) that receives power from the drive source and is rotated;
A disk hub assembly (42) engaged with the rotating shaft (3) and selectively in contact with and spaced from the pulley (41); A field coil assembly (43) for generating magnetic force when the power is applied to bring the pulley (41) and the disc hub assembly (42) into contact with each other; And spacing means for separating the pulley 41 from the disk hub assembly 42 when the field coil assembly 43 is powered off and the field coil assembly 43 loses its magnetic force,
The field coil assembly 43 includes a coil housing 432; And a coil (434) housed in the coil housing (432) and generating an electromagnetic force upon power application,
The coil housing 432 includes a flange portion 436 protruding from the coil housing 432 and facing the sensor mounting groove 12,
The hall sensor 52 includes a sensing portion 522 interposed between the sensor mounting groove 12 and the flange portion 436; And a fixing part (524) protruding from the sensing part (522) and positioned on the opposite side of the sensing part (522) with respect to the flange part (436). 9. The method of claim 8,
A first hook H11 protruding toward the flange portion 436 is formed on the fixing portion 524,
Wherein the flange portion (436) is formed with a first hook groove (H12) into which the first hook (H11) is inserted. 10. The method of claim 9,
A second hook H21 protruding toward the sensor mounting groove 12 is formed in the sensing portion 522,
And a second hook groove (H22) into which the second hook (H21) is inserted is formed in the sensor mounting groove (12). 11. The method of claim 10,
The first hook H11 is inserted into the first hook groove H12 and the second hook H21 is inserted into the second hook groove H12 when the hall sensor 52 is inserted into the sensor mounting groove 12, Is inserted into the hook groove (H22)
When the first hook H11 inserted into the first hook groove H12 is detached from the first hook groove H12, the second hook H21 is inserted into the second hook groove H22 Is maintained.

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