KR100760661B1 - Defrost device of a refrigerated warehouse coil type freezer - Google Patents

Abstract

A defrost device of a coil type cooler of a refrigeration warehouse is provided to keep the indoor temperature constantly, and to improve quality of stored things and efficiency of a system. A defrost device of a coil type cooler of a refrigeration warehouse comprises a brush set(40), a driver(80), a wheel(25), and a rail(20). The brush set removes frost of a freezer coil. The driver rotates the brush set. The wheel horizontally reciprocates the brush set and driver in the longitudinal direction of the cooler coil. The rail is installed so as to guide the wheel. The brush set comprises a driving shaft(42), a bearing(46), a first bevel gear(44), and a brush pack(50). The driving shaft is installed to the driver, and rotated by operation of the driver. The bearing fixes and supports both sides of the driving shaft. The first bevel gear is connected to the driving shaft so as to transmit rotation force of the driving shaft. The brush pack is rotated by rotation force of the first bevel gear.

Description

Defrost device of a refrigerated warehouse coil type freezer

1 is a schematic view of the brush installation showing a first embodiment of a defrosting method of a cold storage coiled refrigerator according to the present invention.

FIG. 2 is a conceptual diagram of defrost of the brush shown in FIG. 1. FIG.

Figure 3 is a front sectional view of the refrigerator cold storage coil type cooler defrosting apparatus according to the present invention.

Figure 4 is a front sectional view of the brush pack of the defrosting device shown in FIG.

5 is a partial bottom perspective view of the refrigerator cold storage coil type cooler defrosting device shown in FIG.

6 is a perspective view of the refrigerator cold storage coil type cooler defrosting device shown in FIG. 3.

Figure 7 is a front sectional view showing another embodiment of the refrigerator cold storage coil type cooler defrosting apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10: coil 15: frost (upper)

20: rail 25: wheels

27: flange 29: motor

30: (roll) brush 40: brush set

42: drive shaft 44: first bevel gear

45: case 46: bearing

50: brush pack 52: wire stand

54: brush wire 56: axis of rotation

58: second bevel gear 60: pulley

65: V-belt 70: drive motor

73: stepping motor 75: drive motor support

80: drive means

The present invention relates to a defrosting method and a defrosting apparatus of a cold storage coiled coil cooler for removing frost generated on the coil of the coiled cooler installed on the ceiling of the cold storage warehouse. A defrosting method and a defrosting apparatus of a cold storage coiled-type cooler capable of removing frost attached to the coil by installing a brush on the coil and rotating the brush to horizontally reciprocate in the longitudinal direction of the coil. will be.

In low temperature freezer refrigerators, the refrigerant is generally supplied to the ceiling coil coolers installed in the ceiling to cool the surrounding air with the cooling heat generated during the evaporation of the refrigerant, and the cooled air cools the stored items to be refrigerated or frozen.

In this process, since air always has a certain amount of moisture, the moisture in the air is condensed and frozen, and frost is attached to the surface of the cooler heat pipes and grows. If the frost grows on the surface of the cooler heat pipe and the thickness (frost layer) is increased, the heat resistance of the cooler heat pipe is increased, resulting in poor heat transfer.

If the heat transfer of the cooler is bad, not only can the product to be cooled or not be maintained at a predetermined temperature, but also takes a long time to reach a certain temperature, which increases the operating time of the freezer and decreases the production speed of the cooler. Done. In addition, a so-called liquid back phenomenon, in which the liquid refrigerant does not evaporate in the cooling tube and flows into the compressor, may occur, causing a failure of the apparatus.

Therefore, the work to remove the frost attached to the cooler heat pipe, that is, defrost is required.

Defrosting methods in the existing refrigeration warehouses include ① defrosting the refrigerator for a certain time to defrost naturally, ② defrosting hot gas into the refrigerant to melt it, and ③ using an electric heater in the evaporator. Heat transfer defrosting method to install and supply electricity at regular intervals, ④ to remove frost by spraying water or brine. Etc. However, among these defrosting methods, freezer stops or heat transfer defrosters are used in small refrigeration systems, and hot gas defrosting methods are most commonly used in medium and large-sized low-temperature refrigerated warehouses.

The current hot gas defrosting method requires a time to defrost depending on the type of items (aquatic products, livestock products, agricultural products, etc.) stored in the refrigerated warehouse, and during defrosting, the temperature in the warehouse rises, and sufficient and regular defrosting is performed. This is not made so that the thickness of the frost layer is formed thick, so it does not fall well from the heat pipe during defrosting.

In such cases, field workers must enter the cold warehouse directly to shake off the frost on the cooler attached to the high ceiling with sticks or brooms, and cover the entire article to prevent frost masses from falling. There are many difficulties, such as the need to discharge the frost out.

In particular, cold storage for freezing or freezing fish or livestock products below -25 ° C or even -55 ° C, regardless of season, requires repeated operations at regular intervals. In terms of health, it is a significant obstacle.

In addition, due to the field work conditions, defrosting is not performed at an appropriate time, so a thicker frost layer is formed on the evaporator tube, and the heat transfer is worsened, so that the temperature in the warehouse is not easily lowered. There were also various problems, such as increased drying from.

The present invention has been made to solve the above problems, the object of the present invention is to change the operation cycle, the pumping operation, hot gas injection operation at about 40 minutes to 1 hour in the operation stop of the cooling device to defrost the cooler Unlike conventional defrosting methods, which require a degree of defrosting, the refrigerator-freezer coil can be defrosted by operating the roller brush while the cooler is in operation, whenever the defrosting is required. It is to provide a defrosting method and apparatus of a type cooler.

In addition, the present invention enables the defrosting operation at a constant cycle and time according to the presence of frost at any time even during the operation of the apparatus without increasing the temperature in the warehouse due to the stop operation of the apparatus during the defrosting of the conventional defrosting method to improve the efficiency of the cooler. It can maximize and save power, and can maintain constant room temperature all the time. It is another object to provide a device.

The present invention for achieving the above object, in the defrosting method of the coiled refrigerator cooler of the refrigerator, the brush is installed on the upper portion of the coil of the cooler, the brush is rotated and the horizontal reciprocating movement in the longitudinal direction of the coil It is characterized in that to remove the frost (frost) attached to the coil.

In addition, in the defrosting method of the coiled refrigerator cooler, a frost is attached to the coil by installing a brush between the coils of the cooler, rotating the brush and horizontally reciprocating the longitudinal direction of the coil. ) To be removed.

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On the other hand, the present invention is a brush set for removing the frost of the cooler coil; Driving means for rotating the brush set and horizontally moving the coil set in a longitudinal direction of the coil; A wheel for horizontally moving the brush set and the driving means in the longitudinal direction of the cooler coil; A rail provided to guide the wheel; wherein the brush set is connected to the driving means, the driving shaft being rotated by the operation of the driving means, a bearing for fixing and supporting both sides of the driving shaft, and coupled to the driving shaft. And a first bevel gear for transmitting the rotational force of the drive shaft, and a brush pack rotating by the rotational force of the first bevel gear.

Here, the wheel is characterized in that the motor is further installed to enable the horizontal reciprocating motion.

In addition, the driving means is characterized in that the stepping motor is directly coupled to the brush set.

The drive means includes a drive motor for generating a rotational force; A V-belt for transmitting the rotational force of the drive motor; And a pulley that is coupled to the V-belt to rotate.

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Here, the first bevel gear is characterized in that one more than the number of columns of the cooler coil is installed so as to be located between the cooler coils.

In addition, the bearing is characterized in that the earth bearing.

And, the lower portion of the bearing is provided with a frame of the L-shape, characterized in that the wheel is installed on the vertical surface of the frame.

The brush pack may further include: a second bevel gear that meshes with the first bevel gear to change a rotation direction; A rotating shaft installed on the shaft of the second bevel gear; A cylindrical wire rod installed on the shaft of the rotating shaft; And a brush wire planted in the wire band.

Here, the case is installed on the upper portion of the second bevel gear.

In addition, the cylindrical wire band is Teflon material, the brush wire is characterized in that the STS material of 0.1mm thickness.

In addition, the length of the brush wire is formed to be 10mm longer than the length in contact with the outer diameter of the coil, the length of the brush wire of the upper and lower portion of the coil is characterized in that formed to overlap 20mm with the brush wire of the adjacent wire pack.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of a defrosting method and apparatus of a cold storage warehouse coil type cooler according to the present invention.

First, Figure 1 is a brush installation schematic showing a first embodiment of a defrosting method of a cold storage coiled refrigerator according to the present invention, Figure 2 shows a defrosting conceptual view of the brush shown in FIG.

In the defrosting method of the coiled refrigerator cooler of the refrigerator according to the present invention, as shown in FIG. 1, the brush 30 is installed in contact with the coil 10 of the cooler, and the brush 30 is rotated (not shown). By rotating by means of a moving means (not shown) in the longitudinal direction of the coil 10 to remove the frost (15) attached to the coil (10).

In more detail, the present invention, unlike the conventional hot gas defrosting method, electrothermal defrosting method or a method of defrosting by spraying water or brine, the roll-shaped brush 30 is installed on the cooler coil 10 and rotated, By moving the brush 30 in the longitudinal direction of the coil 10 along the rail 20 installed on the outside of the coil 10, the frost 15 automatically implanted on the cooler coil 10 without any manual work. It is to remove them completely.

In addition, the brush 30 is installed on the upper and lower portions of the coil 10 as necessary, or installed between the cooler coils 10 as shown in FIG. The complete defrosting operation can be performed by making it reach the entire cross section of (10), and although not shown, a separate timer device is further provided, and a predetermined time is designated regularly according to the type of refrigerated refrigerators and the environment in the warehouse. Of course, defrosting can be done.

Next, FIG. 3 is a front sectional view of the refrigerator cold storage coil type cooler defrosting apparatus according to the present invention, FIG. 4 is a front view of a brush pack of the defrosting apparatus shown in FIG. 3, and FIG. 5 is a cold storage warehouse coil shown in FIG. 3. Partial bottom perspective view of the type cooler defrosting apparatus, FIG. 6 is a perspective view of the refrigerator cold storage coil type cooler defrosting apparatus shown in FIG. 3, and FIG. 7 is another embodiment of the refrigerator cold storage coil type cooler defrosting apparatus according to the present invention. It shows a cross-sectional view showing.

As shown in FIG. 6, the defrosting apparatus of the refrigerator cold storage coil type cooler according to the present invention rotates the brush set 40 and the brush set 40 to largely remove the frost of the cooler coil 10. Driving means 80 for horizontal reciprocating movement in the longitudinal direction of the coil 10, and the wheel 25 for allowing the brush set 40 and the driving means 80 to move horizontal reciprocating in the longitudinal direction of the coil 10 And a rail 20 for guiding the wheels 25.

The wheel 25 is installed at the lower part of the brush set 40 so that the brush set 40 and the driving means 80 can move horizontally along the rail 20. ) Can be rotated, but the small motor 29 is preferably coupled to the wheel 25 to move horizontally.

In addition, the wheel 25 and the rail 20 is shown to use a circular wheel and a channel-shaped rail 20 of rubber or synthetic resin material, the wheel 25 and the rail 20 is a railroad rail with a flange Of course, it can be modified in various ways, such as the shape of the wheel and the shape of the railway rail.

On the other hand, the drive means 80, the drive motor 70 for generating a rotational force, the V belt 65 for transmitting the rotational force of the drive motor 70, and the power transmission by the V belt 65 It consists of a pulley 60 that is rotated by receiving the rotational force of the drive motor 70 by, and the brush set 40 is again installed on the shaft of the pulley 60 is rotated by the pulley 60 A drive shaft 42 that rotates, a bearing 46 for rotationally supporting both ends of the drive shaft 42, first bevel gears 44 coupled to the drive shaft 42, and the first bevel gear It consists of brush packs 50 coupled to 44.

In addition, the driving means 80 may be composed of a stepping motor 73 directly coupled to the lower portion of the brush set 40, as shown in FIG. 7, a belt or other types of gears may be used. Of course.

As shown in FIG. 3, the brush pack 50 should be located between the cooler coils 10, so that the first bevel gear 44 and the brush pack 50 are coupled to the brush pack 50. Should be installed one more than the number of columns of the cooler coil (10).

In addition, the bearing 46 rotates and supports the drive shaft 42 which rotates at a high speed, and fixes both sides of the drive shaft 42 in order to prevent vibration and to perform a more efficient defrosting operation. It is desirable to use earth bearings that have oil supply mechanisms in them to minimize frictional damage and maintain stable performance for a long time.

Meanwhile, as shown in FIG. 4, the brush pack 50 includes the second bevel gear 58 and the second bevel gear 58 that engage with the first bevel gear 44 to change the rotation direction. It consists of the rotating shaft 56 provided and rotated in the shaft, the cylindrical wire stage 52 provided in the shaft of the said rotation shaft 56, and the brush wire 54 planted in the said wire stage 52. As shown in FIG.

Here, the cylindrical wire band 52 is preferably made of a Teflon material, because the Teflon forms a very stable compound by a strong chemical bond of fluorine and carbon, such as excellent insulation stability, heat resistance and low coefficient of friction Because it has.

) 피막이 형성되어 열, 산소, 물, 화공약품 등의 침입을 차단하여 부식에 대한 저항성을 갖도록 구성되어 있기 때문이다.In addition, the brush wire 54 is preferably made of 0.1 mm thick STS material, the reason is that the STS material is chromium oxide (

This is because the film is formed to block the invasion of heat, oxygen, water, chemicals, etc. to have resistance to corrosion.

And, the length of the brush wire 54 was determined to allow a margin of about 10mm to remain even after the wire 54 in contact with the outer diameter of the cooler coil 10, the reason is that if the length is too long of the brush pack 50 This is because it acts as a load against rotation, causing the power of the drive motor 70 to increase, and if too short, a sufficient defrosting effect cannot be exhibited. In addition, the length of the brush wire 54 above and below the coil 10 that does not contact the cooler coil 10 is about 10 mm longer than the length to reach the center of the coil 10 so that the side of the brush pack 50 It is desirable to have an overlapping area of about 20 mm so that no defrost blind spots are formed.

Next, with reference to Figures 3 to 6 will be described the operation principle of the defrosting device of the cold storage coiled refrigerator according to the present invention.

First, when the driving motor 70 is driven to rotate the pulley 60 connected to the driving motor 70 and the V belt 65, the driving shaft 42 installed on the shaft of the pulley 60 rotates, thereby driving the driving shaft ( The first bevel gear 44 coupled to 42 rotates.

In accordance with the rotation of the first bevel gear 44, the second bevel gear 58 engaged with the first bevel gear 44 rotates to change the rotation direction, and is installed on the shaft of the second bevel gear 58. As the rotating shaft 56 rotates, the brush wire 54 planted in the wire base 52 rotates to remove the frost 15 formed on the cooler coil 10.

At this time, it is preferable that the case 45 is installed on the upper portion of the second bevel gear 58 so that the frosts 15 separated from the cooler coil 10 do not affect the driving device such as a gear located below. The case 45 is fixed to a lower portion of the bearing 46 for supporting both ends of the drive shaft 42, and a lower portion of the case 45 is provided with a drive motor support 75 to drive the motor. 70) should be fixed in the proper position.

In addition, a lower portion of the bearing 46 is formed with a flange-shaped flange 27 so that the case 45 is more firmly fixed, the wheel 25 is formed on the vertical surface of the flange 27 The defrosting apparatus of the refrigerator cold storage coil type cooler according to the present invention is configured to perform the defrosting operation while reciprocating in the longitudinal direction of the cooler coil 10 along the rail 20.

Reciprocating movement of the defrosting device is naturally moved forward by the friction force generated in the process of removing the frost formed on the cooler coil 10 by the brush wire 54 by the rotation of the brush pack 50, By changing the rotational direction of the drive motor 70, the movement direction can be changed. In addition, by adjusting the rotational speed of the drive motor 70 it is possible to adjust the moving speed of the defrosting device.

On the other hand, if necessary, the motor 29 is installed on the vertical surface of the flange 70 in order to reciprocate the longitudinal direction of the cooler coil 10 in the defrosting device of the refrigerator cold storage coil type cooler according to the present invention, The wheel 25 may be coupled to the rotating shaft of the motor 29.

In addition, Figure 7 shows another embodiment of the defrosting apparatus of the cold storage coiled refrigerator according to the present invention, to simplify the drive means of the defrosting apparatus shown in FIG.

More specifically, instead of the configuration of the drive motor 70, the V belt 65, the pulley 60, the drive shaft 42, the bearing 46, the first and second bevel gears 44 and 58, the case ( Directly installing the drive motors 70 to the lower portion of the 45, and by installing the brush pack 50 constituting the brush set 40 on the shaft of each stepping motor 73 to rotate the drive means Simplified. Since the rest of the components and their operation relationship is the same as the defrosting device shown in Figure 3 will be omitted a detailed description.

Although the above-described embodiments have been described with respect to the most preferred examples of the present invention, the present invention is not limited to the above embodiments, and the technical concept of the present invention, such as replacing or changing the configuration of the bevel gear with another type of gear or belt, etc. It will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the invention.

According to the defrosting method and apparatus of the refrigerator cold storage coil type cooler according to the present invention configured as described above, by operating the roller brush while the cooler is running without stopping the cooler during the defrosting operation, by allowing the defrosting operation, By maintaining constant room temperature at all times, it is possible not only to improve the quality of the stored goods and to improve the efficiency of the whole system, but also to install it easily without any special equipment in existing coolers or newly installed systems. Its simple configuration makes it easy to operate and has an excellent effect of no fear of failure.

In addition, according to the present invention, by allowing the defrosting work to be performed automatically without the need for a separate site worker, it is possible to eliminate the remaining defrosting work that was performed by hand after the existing defrosting work, the field worker must work under low temperature bad conditions It has an additional effect that can solve their grievances.

Claims (15)

delete delete delete A brush set for defrosting the cooler coil; Drive means for rotating the brush set; A wheel for horizontally moving the brush set and the driving means in the longitudinal direction of the cooler coil; Rail is installed to guide the wheel; The brush set is connected to the drive means and the drive shaft is rotated by the operation of the drive means, a bearing for holding both sides of the drive shaft, a first bevel gear coupled to the drive shaft to transmit the rotational force of the drive shaft and The defrosting apparatus of the refrigerator cold storage coil coil cooler, characterized in that made of a brush pack that rotates by the rotational force of the first bevel gear. The method of claim 4, wherein The defrosting apparatus of the cold storage coiled cooler of the refrigerator, characterized in that the motor is further installed to enable the horizontal reciprocating motion. The method of claim 4, wherein The drive means is a defrosting device of a cold storage coiled cooler, characterized in that the stepping motor is directly coupled to the brush set. The method of claim 4, wherein The drive means, A drive motor generating a rotational force; A V-belt for transmitting the rotational force of the drive motor; The defrosting apparatus of the cold storage coil coil cooler, characterized in that consisting of; delete The method of claim 4, wherein The first bevel gear is a defrosting device of a refrigerator cold storage coil type cooler, characterized in that one more than the number of heat of the cooler coil is installed so as to be located between the cooler coil. The method of claim 4, wherein Defrosting apparatus of the coiled cooler of the cold storage warehouse, characterized in that the bearing is earth bearing. The method of claim 10, Defrosting device of the refrigerator cold storage coil type cooler, characterized in that the lower portion of the bearing is provided with a frame of the L-shape, the wheel is installed on the vertical surface of the frame. The method of claim 4, wherein The brush pack, A second bevel gear that meshes with the first bevel gear to change a rotation direction; A rotating shaft installed on the shaft of the second bevel gear; A cylindrical wire rod installed on the shaft of the rotating shaft; Defrosting apparatus of the coiled cooler of the cold storage refrigerator, characterized in that consisting of; The method of claim 12, The defrosting apparatus of the coiled cooler of a refrigerated refrigerator, characterized in that a case is installed above the second bevel gear. The method of claim 12, The cylindrical wire stand is a teflon material, the defrosting device of the cold storage coil coil cooler, characterized in that the brush wire is 0.1mm thick STS material. The method of claim 12, The length of the brush wire is formed to be 10mm longer than the length in contact with the outer diameter of the coil, the length of the brush wire of the upper and lower portion of the coil is formed so as to overlap the brush wire of the adjacent wire pack 20mm Defroster of coil cooler.

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