KR20170003731U - Snow Ice maker applying sealing means to prevent leakage - Google Patents

Abstract

Disclosed is a drum-type ice-maker for preventing leakage of a refrigerant in a ice-making drum of a drum-type ice-maker. This drum rotary ice-
A drum body 100 driven by a motor on one side of the ice-making drum; A refrigerant pipe (140) coupled to a finishing cap (190) forming a supply hole from the outside of the drum body (100) and forming a spray hole (149); An axial tube portion 110 surrounding the refrigerant tube 140 and rotating with the drum body with respect to the refrigerant tube; A recovery pipe (130) axially introduced into the refrigerant pipe; And a leakage preventing means ("a ") installed between the refrigerant pipe and the shaft portion to prevent the refrigerant from flowing out. The leakage preventing means includes a first bearing; A first slider; A second slider; A second bearing; And a seal member installed between the inner space of the first slider and the second slider, wherein the seal member comprises: a ring-shaped body having a sliding surface on one side of which sliding contact with the first slider; And the other side of the ring-shaped body forming grooves, upper and lower outer circumferential surfaces of the grooves, respectively, and respectively sealing the inner surface of the second slider and the outer circumferential surface of the refrigerant tube with elastic force to block the refrigerant; The present invention also provides a drum-type ice-maker having improved leakage preventing means including a drum-type ice maker.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drum type ice-

The present invention relates to a drum rotation type ice maker in which a leakage preventing means for preventing leakage of a refrigerant in a freezing drum of a drum type rotary ice maker for freezing ice on an outer peripheral surface of a rotating drum is improved.

Patent Registration No. 10-0691027 (February 27, 2007) and Patent Registration No. 10-1268911 (May 23, 2013), Patent Registration No. 10-0178693 (November 24, 1998) And the like have been known in the home or in the shops, ice-making machines used to produce snow ice (powdered ice) used for ice cream and ice cream.

The drum type ice-maker includes a cylindrical ice-making drum which is supplied with raw water from a raw water supply tank provided on the upper surface thereof and rotates in a state where a part of the outer circumferential surface of the raw water is temporarily locked, A recovery tube for recovering the refrigerant sprayed in the ice-making drum, a cutting member for cutting out frozen ice on the outer peripheral surface of the ice-making drum, a drive motor for rotationally driving the ice-making drum, And an enclosing outer casing.

At this time, a sealing device (leakage preventing means) is provided between the ice-making drum and the refrigerant tube to maintain the air-tight state so that the refrigerant gas inside the ice-making drum does not flow out to the outside. The ice making efficiency of the ice maker is lowered. To improve this, a hermetic sealing device such as the registered patent 10-1312953, the registered trademark 10-1474544, the registered trademark 10-1482250, the registered trademark 10-1459580, the registered trademark 10-1555862, and the registered trademark 10-1312953 Many are known.

 In particular, the hermetic sealing devices for blocking the leakage of the refrigerant include a refrigerant pipe for allowing the refrigerant to flow into and out of the ice-making drum D, a cylindrical housing for supporting the ice-making drum D, A first seal member inserted into the finishing cap, a second seal member facing the first seal member inside the housing, and a second seal member disposed inside the housing, A rear cover surrounding the second seal member, a spring for bringing the second seal member into close contact with the first seal member, and a plurality of O-rings.

However, in the case of the hermetic retaining device, since the second seal member is installed in the rear cover, and the spring catches only the rear cover, when the first seal member rotates together with the housing, 1 sealing member, and the outer circumferential surface of the refrigerant pipe is always provided with a minute gap for allowing the flow of the refrigerant, so complicated hermetic means such as an additional sealing member or o-ring for preventing the leakage of the refrigerant must be repeatedly implemented There is a problem that the arrangement of the ice-maker housing is increased due to the complicated installation parts and the length of the installation section being excessively long due to the structure for blocking the leakage of the refrigerant. However, the frictional force due to excessive rotation may cause the seal members to be damaged In particular, such a hermetic retaining device can prevent the refrigerant gas from being mixed with the refrigerant gas If these seal members can not completely block the refrigerant gas, there is a problem that the refrigerant leaks out of the freezing drum as it is.

As shown in this manner, although the finishing structures such as the spring and the back cover for sealing are complicatedly implemented, the refrigerant is still discharged, and the size and installation length of the device for implementing the leakage preventing means are unnecessarily And it has become a serious problem in realizing a compact drum rotary type ice maker.

The object of the present invention is to provide a drum type ice maker in which the leakage preventing means of the drum type ice maker is improved to improve the airtight structure so as to completely block the refrigerant leaking between the refrigerant tube and the rotating drum. have.

Further, it is possible to completely block the leakage between the sliding gaps having the structure for preventing the leakage between the refrigerant tube and the drum shaft housing (hereafter referred to as the shaft tube portion), and to prevent the leakage of the rotating shaft portion constituting the leakage preventing means, The purpose of this invention is to reduce the size of the outer casing of the drum type rotary ice maker by reducing the installation interval (horizontal width) of the drum.

Particularly, the present invention has an object to increase the sealing efficiency by allowing the seal member to come into strong resilient contact in the contact structure of the rotating surface of the ice-making drum and the fixing surface continuously rotating.

In order to achieve the above object, the present invention provides a drum rotation type ice-

There is provided a drum rotary ice-maker for producing ice on a surface of a ice-making drum by rotating a ice-making drum supplied with a coolant into an ice-making bath, A drum body connected to one side of the ice making drum by a motor drive shaft; A refrigerant tube coupled to the finishing cap formed on the outer side of the drum body to form a supply hole and forming a spray hole inside the drum body; An axial tube portion surrounding the refrigerant tube on the other side of the drum body and rotating with the drum body relative to the refrigerant tube; A recovery pipe axially penetrating the inside of the refrigerant pipe and forming a recovery hole on the outer side of the finishing cap and the axial tube portion and forming a suction port on an inner end thereof; And

And a leakage preventing unit installed between the refrigerant pipe and the shaft pipe to prevent the refrigerant from flowing out,

A first bearing fixedly installed on the end of the axial tube portion and the refrigerant tube; A first slider installed inside the first bearing between the refrigerant pipe and the shaft portion; A second slider screwed into the first slider opening internal space; A second bearing fixedly installed outside the second slider on the inner space side of the first slider; And a seal member installed between the inner space of the first slider and the second slider,

A ring-shaped body having a sliding surface on one side of which sliding contact with the first slider; And the other side of the ring-shaped body forming grooves, upper and lower outer circumferential surfaces of the grooves, respectively, and respectively sealing the inner surface of the second slider and the outer circumferential surface of the refrigerant tube with elastic force to block the refrigerant; And the leakage preventing means including the leakage preventing means.

In order to achieve the above object, the inventive drum rotation type ice-maker improved the leakage preventing means, it is preferable that the first wet rotor includes an arc-shaped C-shaped curved surface and the second wetted rotor is linear.

In order to achieve the above object, the present invention provides a drum type ice-maker having improved leakage preventing means, comprising: a refrigerant pipe inserted into a groove formed of first and second wetting wicks of the ring- And an elastic member installed to generate elasticity so as to be in close contact with the second slider in contact with the wet rotor.

The drum-type ice-maker according to the present invention improves the coupling structure between the refrigerant tube and the drum body,

The assembly and disassembly of the refrigerant pipe and the drum body can be simplified and the leakage of the refrigerant can be prevented from occurring in this portion, thereby improving the problem of the leakage preventing means and improving the airtightness structure so as to completely block the refrigerant leaking through the seal members It is possible to provide a drum type rotary ice maker in which leakage preventing means is improved.

In addition, it is possible to completely block the leakage between the sliding gaps having the structure for preventing the leakage of the refrigerant tube and the axial tube portion from leaking, reduce the installation interval (horizontal width) of the rotating axial tube portion and the axial tube portion constituting the leakage preventing means, The size of the outer casing of the rotary drum type ice maker has been reduced.

The present invention increases the sealing efficiency by allowing the seal member to make a strong resilient contact in the contact structure of the rotating surface and the fixing surface, which continuously rotate the ice drum.

1 is a cross-sectional view showing an example of a drum-type ice-maker in which leakage preventing means is conventionally implemented,
FIG. 2 is an overall sectional view of a drum type ice-maker in which the inventive leakage preventing means is improved,
FIG. 3 is an exploded cross-sectional view of a drum type ice maker in which the inventive leakage preventing means is improved,
Fig. 4 is an enlarged view of "a" in Fig. 2,
5 (a) and 5 (b) are cross-sectional views of a seal member of a drum rotary ice-maker in which the inventive leakage preventing means is improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded cross-sectional view of a drum rotary ice-maker in which the inventive leakage preventing means is improved. FIG. 4 is a cross-sectional view of the drum rotary ice- Fig.

2, the drum-type ice-maker includes a raw water tank for supplying raw water, an ice-making water tank for receiving the raw water, a ice-making drum for rotating in a dipping state in the ice-making water tank, A driving motor for rotating the shaft, a cutting portion for cutting ice from the front surface of the ice-making drum, and an outer casing (outer casing) for covering them.

The drum type ice maker further includes a drum body 100 connected to one side of the ice-making drum by a motor drive shaft and a finishing cap 180 forming a supply hole from the outside of the drum body 100, A refrigerant pipe 140 which forms a spray hole 149 on the inner side of the drum body 100 and a refrigerant pipe 140 which surrounds the refrigerant pipe 140 from the other side of the drum body 100, The refrigerant pipe 140 is axially penetrated into the refrigerant pipe 140 and is axially penetrated into the refrigerant pipe 140. One end of the refrigerant pipe 140 is coupled to the finishing cap 160, A return pipe 130 coupled to a suction port 131 formed with a recovery hole 132 and a leakage preventing unit 130 installed between the refrigerant pipe 140 and the shaft pipe unit 110 to prevent the refrigerant from flowing out, (A).

The leakage preventing means A is provided with a first bearing 145 between the shaft tube portion 110 and the refrigerant tube 140 at the inlet side of the shaft tube portion 110 of the ice-making drum 100, The first slider 143 is fixed to the first bearing 145 between the shaft portion 110 and the refrigerant pipe 140 by an O-ring 148 And a second slider 142 having a spiral 142b formed on the spiral 143b toward the inner space 143a of the first slider 143 is screwed into the first slider 142, The seal member 150 is inserted between the opening-side internal space 143a of the first slider 143 and the second slider 142 and then the second slider 142 is inserted outside the second slider 142 screwed into the internal space 143a 2 bearing 141 is inserted and fixed as the stopper 146. [ The seal member 150 is in surface contact with the first slider 143 so that one side of the ring-shaped body 151 is in sliding contact with the first slider 143 before insertion and installation, and the other side of the ring- The first and second wet rotors 153 and 154 are formed so as to form the upper and lower outer circumferential surfaces of the groove 152 so that the inner surface of the second slider 142 and the outer surface of the refrigerant pipe 140 have elasticity As shown in Fig. In particular, the elastic member 160 is inserted into the groove 152 formed by the first and second wet rotors 153 and 154 of the ring-shaped body 151, and the elastic member 160 is inserted into the ring- 151 are brought into close contact with the coolant pipe 140 in contact with the first humidifying rotor 153 and the second slider 142 in contact with the second humidifying rotor 154 to generate elasticity.

In the drum type ice-maker having improved the present invention leakage preventing means, the driving shaft 120 is coupled to the other side of the drum body 100, and the driving shaft 120 is given a predetermined rotational force by a driving motor .

The operation of the powder ice ice-maker having the present invention leakage preventing means including the leakage preventing means (A) installed to prevent the leakage of the refrigerant will be described with reference to FIG.

Pressure refrigerant is injected through the injection joint 180 of the inner refrigerant pipe 140 of the shaft tube portion 110 of the ice-making drum 100 rotated by driving the driving shaft 120, The refrigerant is injected into the inner space of the drum 100 to perform a predetermined cooling cycle operation and the refrigerant that has absorbed the heat and is injected is recovered into the recovery pipe 130 through the recovery hole 132 of the suction port 131 Recovered joint 170, and circulated.

A part of the refrigerant sprayed in the ice-making drum 100 during the cooling cycle operation of the refrigerant leaks to the inner circumferential surface of the refrigerant tube 140 and the inner circumferential surface of the axial tube portion 110 where the second bearing 141 of the axial tube portion 110 is installed. . At this time, the design of the leakage of the refrigerant is blocked as the seal member 150 having a stronger adhesion than the conventional leakage preventing means, thereby increasing the efficiency of the refrigerant.

The reason for this is that the first slider 143, which is closely adhered and assembled in a primary manner, and the first route ("a" in the drawing) formed on the inner circumferential surface of the shaft tube portion 110 hardly leak refrigerant, 148).

The first slider 143 rotates integrally with the first slider 143 coupled with the spiral 142b on the spiral 143b formed in the inner space 143a of the first slider 143 rotating secondarily, It is assumed that a refrigerant leakage path is anticipated as a second route ("b" in the drawing) formed between the sealing member 150 sliding between the pipe 140 and the sealing member 150. However, The second slider 142 is pressed against the outer circumference of the second slider 142 by the pressure of the second slider 142 to prevent the refrigerant from leaking.

The refrigerant leakage third route ("d" in the drawing) of the contact surface of the sealing member 150 which is tightly caught by the first slider 143 rotating in a tertiary manner is expected. However, 2 slider 142 is firmly tightened by screwing so that leakage of the refrigerant hardly occurs.

The third route ("c" in the drawing) formed between the outer peripheral surface of the refrigerant pipe 140 and the second bearing 141 may cause leakage of the largest amount of refrigerant. However, The first humidified rotor 153 is strongly urged outwardly by the pressure of the refrigerant flowing into the groove 152 and is brought into close contact with the surface of the refrigerant tube 140 to block leakage.

As described above, as the refrigerant leakage is introduced into the groove 152 of the seal member 150 at a considerably high pressure of the spray refrigerant, the refrigerant is discharged from the second and third routes (b) and Refrigerant leakage can be blocked.

On the other hand, in addition to the above-described pressure of the refrigerant, in the inside of the groove 152 in which the first and second wet rotors 153 and 154 of the ring-shaped body 151 are formed, the elastic body 160 inserted in the groove 152, The refrigerant tube 140 side contacting the first humidifying rotor 153 of the first humidifying rotor 151 and the inner surface of the second slider 142 contacting the second humidifying rotor 154 are pushed by the elasticity of the elastic member 160 And the leakage of the refrigerant is blocked by the more strongly expanded reaction force.

The elastic force that a considerable pressure of refrigerant is pushed into the groove 152 made up of the first and second wet rotors 153 and 154 of the present invention and pushes out the first and second wet rotors 153 and 154 And the first humidifying blade 153 made of an arc-shaped C-shaped curved surface comes into contact with the surface of the refrigerant pipe 140 in contact with the fixed surface in a curved shape, 140) surface so as to block the leakage third route ("c" in the drawing) of the refrigerant while the second wet rotors 154 contacting the inner surface of the second slider 142 are linearly formed, 2 slider so as to block the leakage of the refrigerant in the second route (indicated by "b" in the drawing) by the tight contact force of the present first and second humidifying blades 153 (154).

5A and 5B are cross-sectional views showing another example of the seal member of the drum type ice maker in which the present invention leakage preventing means is improved.

5A shows an example of a structure in which the surface in contact with the first slider 143 is extended as described above. The seal member 150 shown in Fig. And a surface contacting with the contact surface 143 is reduced. That is, the present design seal member 150 shown in FIG. 5B may be assembled in a simpler form by reducing the contact surface with the first slider 143.

In addition, according to the present invention, since the length of the shaft portion 110 of the ice-making drum 100 can be designed to be short due to the assembly structure of the leakage preventing means (a), the size of the outer casing (casing) of the drum- will be. It is preferable that the seal member of the inventive leakage preventing means is realized as an energized seal made of Teflon.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. I will understand. Therefore, the scope of technical protection of the present invention should be determined by the claims.

The present invention relates to a drum body, and more particularly,
A second slider, a second spool, and a second slider,
143: first slider, 143a: inner space, 143b: spiral, 144: snap ring,
145: first bearing, 146: stopper, 147: stopper, 148: O-ring, 149:
A first sliding rotor, a second sliding rotor, and a second sliding rotor,
160: elastic member, 170: recovery joint 180: injection joint, 190: finishing cap

Claims (4)

There is provided a drum rotary ice-maker for producing ice on a surface of a ice-making drum by rotating a ice-making drum supplied with a coolant into an ice-making bath, ,
A drum body connected to one side of the ice making drum by a motor drive shaft;
A refrigerant pipe coupled to the finishing cap forming a supply hole on the outer side of the drum body and forming a spray hole inside the drum body;
An axial tube portion which surrounds the refrigerant tube on the other side of the drum body and rotates together with the drum body with respect to the refrigerant tube;
A recovery pipe which is axially penetrated into the refrigerant pipe and has one end coupled to the finishing cap and the other end coupled to an inlet formed with a recovery hole; And
A leakage preventing unit installed between the refrigerant pipe and the shaft pipe to prevent the refrigerant from flowing out;
Wherein the leakage preventing means comprises:
A first bearing fixedly installed on the axial end portion of the axial pipe portion and the refrigerant pipe;
A first slider installed inside the first bearing between the refrigerant pipe and the shaft portion;
A second slider screwed into the first slider opening internal space;
A second bearing fixedly installed outside the second slider on the inner space side of the first slider; And
A seal member installed between the inner space of the first slider and the second slider;
Lt; / RTI >
Wherein the seal member
A ring-shaped body having a sliding surface on one side of which sliding contact with the first slider; And
The first and second sliding blades being formed on the other side of the ring-shaped body to form upper and lower outer circumferential surfaces of the groove, respectively, to close the second slider inner surface and the outer circumferential surface of the refrigerant tube with elastic force to block the refrigerant;
Wherein the leakage preventing means is provided on the drum-type ice-maker.
The drum type rotary ice maker of claim 1, wherein the first humidifying rotor (153) is formed of an arc-shaped C-shaped curved surface.
The drum rotary ice-maker of claim 1, wherein the second humidifying rotor (154) is linear.
[2] The refrigerator of claim 1, further comprising: a refrigerant pipe inserted into the groove formed by the first and second wetting wicks of the ring-shaped body and in contact with the first wetting blade and the second slider contacting the second wetting blade, And an elastic member provided so as to generate elasticity.

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