KR20210033086A - Heating apparatus of air having fence for adjusting position - Google Patents

Abstract

The present invention provides an air heating apparatus having a position adjusting-type fence member, which reduces the temperature distribution difference within a heat collection space in which air flows and enhances the efficiency of heat transfer with the air flowing in the heat collection space to enhance the heat collection performance. To this end, the present invention comprises: a duct body provided with an air flow path and having at least a part which is exposed to an external heat source; a blower providing transfer pressure of air passing the air flow path; a heat transfer plate disposed on the air flow path to be in contact with the air passing the air flow path, and heated by the heat transferred from the external heat source; a first fence assembly disposed to protrude from the surface of one side to an upper side based on a central line of the heat transfer plate; a second fence assembly disposed to protrude from the surface of the other side to an upper side based on the central line of the heat transfer plate; an assembly connection unit connecting the first fence assembly to the second fence assembly to be able to rotate; and a position adjustment unit connected to the assembly connection unit and changing the position of the first fence assembly and the second assembly while moving the assembly connection unit in the transfer direction of the air.

Description

Air heating device with position-controlled fence member {HEATING APPARATUS OF AIR HAVING FENCE FOR ADJUSTING POSITION}

The present invention relates to an air heating device using sunlight, and more particularly, to an air heating device having a position-controlled fence member capable of improving heat transfer efficiency between a heat transfer plate that absorbs heat energy from sunlight and an air to be heated. About.

Due to the advancement of the industrial society and the increase of the population, a lot of energy is required, and the most used energy sources are fossil energy sources such as coal, petroleum and natural gas, but these energy sources are limited and are gradually depleted. However, the development of alternative energy sources is urgent because it has a great influence on global warming due to pollution. On the other hand, solar heat, unlike fossil energy sources, is a clean energy source that does not generate pollution and is supplied almost unlimitedly.Therefore, continuous research and commercialization to utilize solar energy as an energy source such as industrial or heating are being made.

A heating system using solar energy is a new renewable energy system that obtains hot water and heating energy by directly exchanging heat to a heat medium using solar heat, and is a new renewable energy system widely used because of its high efficiency and low initial investment cost.

However, the heating system using solar energy is limitedly used for hot water heaters that generate hot water using solar heat, and even that requires a professional installation, and has a disadvantage of high initial installation cost. Accordingly, recently, research on an air heating system that obtains energy by directly heating air using solar energy has been conducted.

The air heating system using solar energy has the advantage that the initial installation cost is low because it has a structure that simply introduces the collected outside air into the room under the influence of solar radiation heat, but it only aims to produce a heat source that is collected by solar radiation. However, there is a limit to insufficient energy production.

In addition, since the air heating system using solar energy has a structure in which air having fluidity is continuously transferred in the heat collection space, there is a problem that the heat transfer efficiency is low and the heat collection performance is very insufficient due to a large difference in temperature distribution inside the heat collection space. .

Accordingly, there is a need for an air heating device using solar heat having excellent heat collection performance, which can reduce the difference in temperature distribution inside the heat collection space and increase heat transfer efficiency.

Japanese Unexamined Patent Publication No. 2003-314901 (published on November 6, 2003)

An object of the present invention is to solve the conventional problem, the present invention is to reduce the difference in temperature distribution inside the heat collecting space through which air flows, and improve the heat transfer efficiency with the air flowing inside the heat collecting space, thereby improving heat collection performance. It is to provide an air heating device having a position-adjustable fence member.

In order to achieve the above-described object of the present invention, an air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention includes: a duct body having an air passage and at least partially exposed to an external heat source; A blower for providing a conveying pressure of air passing through the air flow path; A heat transfer plate disposed on the air flow path, in contact with the air passing through the air flow path, and heated by heat transferred from the external heat source; A first fence assembly disposed to protrude from an upper side from one surface based on a center line of the heat transfer plate; A second fence assembly disposed to protrude from the upper side from the other side surface based on the center line of the heat transfer plate; An assembly connection part rotatably connecting the first fence assembly and the second fence assembly; And a position adjusting unit connected to the assembly connection part and changing the positions of the first fence assembly and the second fence assembly while moving the assembly connection part along the air conveying direction.

In addition, in the air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention, the first fence assembly has a first fence member rotatably coupled to the heat transfer plate, one end of the assembly connection. It may include a second fence member rotatably coupled, and a first rotation connector rotatably connecting the first fence member and the second fence member.

In addition, in the air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention, the second fence assembly includes a third fence member having one end rotatably coupled to the assembly connection part, and one end to the heat transfer plate. A fourth fence member rotatably coupled, and a second rotation connecting portion rotatably connecting the third fence member and the fourth fence member.

In addition, in the air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention, the first fence assembly rotatably supports one end of the first fence member from the heat transfer plate while the assembly connection part is moved. The second fence assembly may further include a first rotation support part for supporting the second rotation support part for rotatably supporting one end of the fourth fence member from the heat transfer plate while the assembly connection part is moved. It may contain more.

In addition, in the air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention, the first fence assembly and the second fence assembly maintain one V (V) shape, or the first fence assembly and Each of the second fence assemblies may maintain a V (V) shape.

In addition, in the air heating apparatus having a position-adjustable fence member according to an embodiment of the present invention, the position control unit, the supporter frame coupled to the central installation groove of the heat transfer plate; A screw member provided in a longitudinal direction of the heat transfer plate and rotatably coupled to the supporter frame; A driving unit that rotates the screw member; And a moving block connected to the assembly connection part and screwed with the screw member to move on the screw member according to the rotation of the screw member.

According to an embodiment of the present invention, by providing a position-adjustable fence member for controlling the air flow inside the duct body, which is a heat collecting space, to reduce the difference in temperature distribution inside the heat collecting space, and to form a turbulent air flow of the flowing air, the heat transfer speed By increasing the heat collection performance can be improved.

According to an embodiment of the present invention, it is possible to further increase the heat transfer efficiency between the heat transfer plate and the air flowing along the surface of the heat transfer plate through the fence member maintaining a plurality of V (V) shapes as needed.

1 is an exemplary view of an air heating apparatus according to an embodiment of the present invention.
2 is a plan view showing an installation state of a fence member according to an embodiment of the present invention.
3 is a plan view illustrating a fence member and a position control unit according to an embodiment of the present invention.
4 is an exemplary cross-sectional view for explaining a position control unit according to an embodiment of the present invention.
5 is a plan view illustrating a position adjustment state of a fence member according to an embodiment of the present invention.
6 is a view for explaining heat transfer characteristics according to various positions of the fence member according to the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-described problem to be solved can be realized in detail will be described with reference to the accompanying drawings. In describing the present embodiments, the same name and the same reference numeral may be used for the same configuration, and additional description accordingly may be omitted.

1 is an exemplary diagram of an air heating apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing an installation state of a fence member according to an embodiment of the present invention, and FIG. It is an exemplary plan view for explaining the fence member and the position adjustment unit, Figure 4 is an exemplary cross-sectional view for explaining the position adjustment unit according to an embodiment of the present invention.

1 to 4, the air heating apparatus according to the embodiment of the present invention includes a duct body 10, a blower 20, a heat transfer plate 30, a fence member 40, and a position control unit 50. Can include.

The duct body 10 provides a space for air heating, and is provided with an air inlet 14a and an air outlet 15a, and an air passage connecting the air inlet 14a and the air outlet 15a in the inner space (13) may be provided.

The duct body 10 allows air passing through the air passage 13 to be heated by the external heat source 1 and is disposed to be directly exposed to the external heat source 1.

The external heat source 1 may be applied to various industrial waste heat or renewable energy, preferably solar light.

When sunlight is used as the external heat source 1, the duct body 10 may maintain a state in which at least a portion of the duct body 10 is directly exposed to sunlight. For example, while forming a part of the duct body 10, the transparent wall part 11 through which sunlight is transmitted, and the other remaining part of the duct body 10 are formed to maintain heat insulation between the internal space and the external space. It may include an insulating wall portion 12.

Glass may be applied to the permeable wall portion 11, and the heat insulating wall portion 12 may be selectively applied from various types of insulating materials that are already known techniques.

When glass is applied as the permeable wall part 11, the use state of the heat transfer plate 30, which will be described later, can be easily checked from the outside, thereby providing convenience for maintenance of the heating device.

The blower 20 may be connected to the air inlet 14a or the air outlet 15a, and may provide a conveying pressure of air passing through the air passage 13 of the duct body 10.

According to the embodiment, the blower 20 is connected to the air outlet 15a of the duct body 10 and the transfer pipe 21, and thus, the air inlet 14a to the inside of the duct body 10 Air may be introduced, and heated air discharged through the air outlet 15a may be provided to a place of use at a constant transfer pressure.

As shown, on the conveying pipe 21, a pressure gauge 22 for measuring the conveying pressure of air, and a flow valve 23 controlling the flow rate of air based on the conveying pressure of air measured by the pressure gauge 21 May be provided. Accordingly, it is possible to more effectively supply heated air to the place of use, and to efficiently operate the heating device according to the capacity of the heated air consumed at the place of use.

In addition, a bellows-shaped expansion joint 24 may be provided on the transport pipe 21, and according to an embodiment, the air outlet 15a of the duct body 10 and the transport pipe 21 are the expansion joint pipe 24. ). Accordingly, it is possible to supply heated air in various directions regardless of the installation position of the heating device, and it is possible to install and operate the heating device even in a narrow place.

The heat transfer plate 30 raises the temperature of air through direct heat transfer with the air passing through the air passage 13, and is disposed in the inner space of the duct body 10 so that it comes into contact with the air passing through the air passage 13. Can be installed.

The heat transfer plate 30 may be made of a material having excellent thermal conductivity, and may be made of a material having excellent heat absorption so that it can be heated by heat transferred from the external heat source 1. Alternatively, the heat transfer plate 30 may be formed by coating a material having excellent heat absorption and thermal conductivity on its surface.

When sunlight is used as the external heat source 1, the heat transfer plate 30 may be disposed under the transparent wall portion 11 so that the upper surface is exposed to sunlight passing through the transparent wall portion 11. Accordingly, the air flow passage 13 inside the duct body 10 has a lower inlet passage 14 connected to the air inlet 14a with the heat transfer plate 30 at the center, and the upper outlet connected to the air outlet 15a. It can be divided into a flow path (15).

That is, the duct body 10 may have an air passage 13 in which the lower inlet passage 14 and the upper outlet passage 15 are stacked and arranged based on the heat transfer plate 30. Accordingly, the air introduced into the air inlet 14a is transported along the lower inlet passage 14 formed by the lower surface of the heat transfer plate 30 and the insulating wall portion 12, and then transported to the upper side, and then heat transfer. The upper surface of the plate 30 and the permeable wall 11 may be transported along the upper outlet passage 15 formed by the permeable wall 11 and then discharged through the air outlet 15a.

The fence member 40 is for further promoting a temperature increase of the air passing through the air passage 13 and may be disposed to protrude upward from the surface of the heat transfer plate 30.

The fence member 40 may be provided in the width direction of the air passage 13 and may be provided to have cross-sections of various shapes. For example, it may be provided to have a semicircular, circular, polygonal cross-section.

A plurality of fence members 40 may be disposed spaced apart at predetermined intervals along the air transport direction.

Like the heat transfer plate 30, the fence member 40 may be made of a material having excellent heat absorption and thermal conductivity.

The fence member 40 may be disposed over the entire surface of the heat transfer plate 30, that is, over all areas of the upper and lower surfaces, and may be disposed only in a partial area of the upper or lower surface.

According to the embodiment, the lower inlet passage 14 and the air outlet 15a connected to the air inlet 14a around the heat transfer plate 30 through the heat transfer plate 30 provided under the permeable wall 11 ), the fence member 40 may be disposed only on the upper surface of the heat transfer plate 30.

The fence member 40 may change the flow of air flowing along the surface of the heat transfer plate 30 to increase heat transfer efficiency between the heat transfer plate 30 and the air.

Specifically, air passing through the surface of the heat transfer plate 30 may increase heat transfer by increasing a contact area with the heat transfer plate 30 including the fence member 40. In addition, the air passing through the surface of the heat transfer plate 30 forms a turbulence in the process of passing through the fence member 40, and the heat transfer plate 30 and the fence member 40 ) And the heat transfer between the air can be increased. In addition, since the convection phenomenon is induced by the generated turbulence, a difference in temperature distribution of the air passing through the air passage 13 can be reduced. As a result, the temperature of the air discharged from the air outlet 15a can be further increased.

Meanwhile, the fence member 40 according to the embodiment may include a first fence assembly 41, a second fence assembly 42, and an assembly connection part 43.

The first fence assembly 41 may be disposed to protrude upward from an upper surface of one side based on a center line of the heat transfer plate 30. A plurality of the first fence assemblies 41 may be provided in the air transport direction, and the plurality of first fence assemblies 41 may be disposed to be spaced apart at predetermined intervals.

The first fence assembly 41 includes a first fence member 411 having one end rotatably coupled to the heat transfer plate 30, and a second fence member 412 having one end rotatably coupled to the assembly connector 43 And a first rotation connection part 413 rotatably connecting the first fence member 411 and the second fence member 412. In addition, the first fence assembly 41 may further include a first rotation support part 410 for rotatably supporting one end of the first fence member 411 from the heat transfer plate 30. As a result, the first fence assembly 41 can form a two-section link structure.

The first rotation support part 410 may include a first fixing pin 410a that penetrates through the first fence member 411 and is coupled to a fastening groove of the heat transfer plate 30.

The first rotation connection part 413 may include a first connection pin 413a that is fastened through one end of the first fence member 411 and one end of the second fence member 421.

The second fence assembly 42 may be disposed to protrude upward from the upper surface of the other side based on the center line of the heat transfer plate 30. A plurality of the second fence assemblies 42 may be provided in the air transport direction, and the plurality of second fence assemblies 42 may be disposed to be spaced apart at predetermined intervals.

The second fence assembly 42 includes a third fence member 421 whose one end is rotatably coupled to the assembly connection part 43, and a fourth fence member 422 whose one end is rotatably coupled to the heat transfer plate 30 And a first rotation connection part 423 rotatably connecting the third fence member 421 and the fourth fence member 422. In addition, the second fence assembly 42 may further include a second rotation support part 420 for rotatably supporting one end of the fourth fence member 422 from the heat transfer plate 30. As a result, like the first fence assembly 41 described above, the second fence assembly 42 may also form a two-fold link structure.

The second rotation support part 420 may include a second fixing pin 420a that penetrates through the fourth fence member 422 and is coupled to a fastening groove of the heat transfer plate 30.

The second rotation connection part 423 may include a second connection pin 423a that is fastened through one end of the third fence member 421 and one end of the fourth fence member 422.

Meanwhile, the first fence assembly 41 and the second fence assembly 42 may be rotatably connected to each other through the assembly connection part 43. The assembly connection 43 may be connected to the position control unit 50 to be described later.

The assembly connection part 43 may include an assembly connection pin 43a that is fastened through one end of the second fence member 412 and one end of the third fence member 421. The front ends of the assembly connection pins 43a passing through the second fence member 412 and the third fence member 421 may be coupled to the moving block 54 of the positioning unit 50 to be described later.

The position control unit 50 may further promote an increase in temperature of air passing through the air passage 13 by adjusting the position of the fence member 40.

The position control unit 50 may include a supporter frame 51, a screw member 52, a driving part 53, and a moving block 54.

The supporter frame 51 may be coupled to a central installation groove installed on the center line of the heat transfer plate 30, and may be provided in the length direction of the heat transfer plate 30.

The screw member 52 may be provided in the longitudinal direction of the heat transfer plate 30 and may be rotatably coupled to the supporter frame 51. A threaded portion may be formed on the outer periphery of the screw member 52.

The driving part 53 may be coupled to one end of the screw member 52 to rotate the screw member 52. The driving unit 53 may be applied with a rotation motor.

The movable block 54 is provided with a through hole penetrating the screw member 52, and a threaded portion that is screwed with the threaded portion of the screw member 52 may be formed on the inner circumferential surface of the through hole. Accordingly, the movement block 54 may be moved in the longitudinal direction on the screw member 52 according to the rotation of the screw member 52.

At this time, the front end of the assembly connection pin 43a penetrating the second fence member 412 and the third fence member 421 may be fixedly coupled to the moving block 54.

Accordingly, the assembly connection part 43 may be linearly moved in conjunction with the moving block 54, and the second fence member 412 and the third fence member 421 rotate in the process of linear movement of the assembly connection part 43 Can be.

Meanwhile, referring to Figure 2 (a), the first fence assembly 41 and the second fence assembly 42 according to the present invention can maintain one V (V) shape according to the operation of the position control unit 50. have.

That is, the first fence assembly 41 in which the first fence member 411 and the second fence member 412 are arranged in a row maintains an inclination angle corresponding to (-a) based on the center line of the heat transfer plate 30 And, the second fence assembly 42 in which the third fence member 421 and the fourth fence member 422 are arranged in a line maintains an inclination angle corresponding to (+a) based on the center line of the heat transfer plate 30. I can. As a result, the first fence assembly 41 and the second fence assembly 42 may maintain a single V (V) shape having a relatively large size.

In addition, referring to FIG. 2 (b), the first fence assembly 41 and the second fence assembly 42 according to the present invention may maintain a plurality of V (V) shapes according to the operation of the positioning unit 50. have.

That is, the first fence member 411 and the second fence member 412 maintain one V (V) shape while maintaining the inclination angle (a) with respect to the first rotation connection part 413, and the third fence member The 421 and the fourth fence member 422 may maintain one V (V) shape while maintaining the inclination angle (a) with respect to the second rotation connection part 423. As a result, the first fence assembly 41 and the second fence assembly 42 may maintain a plurality of V (V) shapes having a relatively small size.

Further, although not shown, a plurality of the first fence assembly 41, the second fence assembly 42, and the positioning unit 50 may be arranged along the width direction of the heat transfer plate 30, and in this case, relatively A fence member 40 having many V (V) shapes may be implemented, and the fence member 40 at this time may be arranged in a zigzag shape along the width direction of the heat transfer plate 30.

The size and quantity of the V (V) shape formed through the first fence assembly 41 and the second fence assembly 42 are the size of the duct body 10 in which the air flow path 13 is formed and the blower 20 It can be set differently according to the conveying pressure of.

As described above, by configuring the fence member 40 to maintain at least one V (V) shape on the surface of the heat transfer plate 30, the air flowing along the surface of the heat transfer plate 30 is the fence member 40 Turbulence can be generated in the process of passing through, and this turbulence can reduce the difference in temperature distribution of the air passing through the air flow path 13 by activating the convection phenomenon of air, and the heat transfer plate 30 and the heat transfer plate 30 The heat transfer efficiency with the air flowing along the surface of) can be further improved. As a result, the temperature of the air discharged from the air outlet 15a can be further increased.

On the other hand, Figure 5 is a plan view showing the position control state of the fence member according to an embodiment of the present invention.

With additional reference to FIG. 5, a supplementary description will be given of the position adjustment process of the fence member 40 according to the operation of the position adjustment unit 50 of the present invention.

First, the movement block 54 of the position control unit 50 according to the embodiment may reciprocate between the first position P1 and the second position P2. Accordingly, the assembly connection part 43 may also reciprocate between the first position P1 and the second position P2.

In the first position (P1), the assembly connection 43 may be disposed on the same line as the first rotation support part 410 and the second rotation support part 420, and in this case, the first fence assembly 41 and the second fence The assembly 42 forms a V-shaped fence member 40 on one side and the other side, respectively, based on the center line of the heat transfer plate 30. At this time, each of the fence members 40 may maintain a certain inclination angle (a).

In this state, when the screw member 52 is rotated according to the operation of the driving part 53, the moving block 54 screwed with the screw member 52 is on the screw member 52 in the longitudinal direction of the screw member 52 And the assembly connection 43 connected to the moving block 54 is also moved linearly.

When the moving assembly connector 43 reaches the second position P2, the first fence member 411 and the second fence member 412 are arranged in a line, and the third fence member 421 and the fourth The fence members 422 are arranged in a row, so that the first fence assembly 41 and the second fence assembly 42 form a single V-shaped fence member 40. At this time, the fence member 40 may also maintain a certain inclination angle (a).

Meanwhile, according to an embodiment of the present invention, the first fence assembly 41 and the second fence assembly 42 are maintained in a preset position before air heating, and the first fence assembly 41 and the second fence assembly 42 Air heating can be performed while the position of) is fixed.

In addition, according to another embodiment of the present invention, the positions of the first fence assembly 41 and the second fence assembly 42 may be continuously changed during the air heating process. For example, as shown in FIG. 5, the assembly connection part 43 may reciprocate continuously or intermittently between the first position P1 and the second position P2. As such, by continuously or intermittently varying the positions of the first fence assembly 41 and the second fence assembly 42 in the heating process of the air passing through the air flow path 13, it flows along the surface of the heat transfer plate 30. It can further activate air turbulence.

6 is a view for explaining the heat transfer characteristics according to various positions of the fence member according to the present invention. Air passing through an air channel for a fence member having no fence member and having a V (V) shape of various quantities This is a graph showing the relationship between the Reynolds number (horizontal axis) and Nusselt number (vertical axis).

First, it can be seen that the Nusselt number increases in proportion to the increase of the Reynolds number in the case of the V (V)-shaped fence member 40 compared to the case without the fence member 40 as a whole. It can be seen that the heat transfer characteristics are remarkably improved when the fence member 40 of the V) shape is present.

In addition, as a result of experimenting by varying the quantity of the V (V) shape of the fence member 40 with respect to the heat transfer plate 30, the maximum heat transfer occurs when 6 V-shaped fence members 40 are installed. I was able to confirm it.

At this time, the inclination angle (a), relative height (e/D), and relative pitch (P/e) of the fence member 40 used in the experiment were kept equal to 30 degrees, 0.043 m, and 10 m, respectively.

The relative height (e/D) means the height (e) of the fence member 40 with respect to the height (hydraulic diameter) of the air flow path 13 formed in the duct body 10, and the relative pitch ( P/e) refers to the pitch (P) between the fence members 40 with respect to the height (e) of the fence member 40.

As described above, preferred embodiments of the present invention have been described with reference to the drawings, but those skilled in the art will variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. Can be modified or changed.

10: duct body 20: blower
30: heat transfer plate 40: fence member
41: first fence assembly 42: second fence assembly
43: assembly connection 50: positioning unit

Claims (6)

A duct body provided with an air passage and at least partially exposed to an external heat source;
A blower for providing a conveying pressure of air passing through the air flow path;
A heat transfer plate disposed on the air flow path, in contact with air passing through the air flow path, and heated by heat transferred from the external heat source;
A first fence assembly disposed to protrude from an upper side from one surface based on a center line of the heat transfer plate;
A second fence assembly disposed to protrude from the upper side from the other side surface based on the center line of the heat transfer plate;
An assembly connection part rotatably connecting the first fence assembly and the second fence assembly; And
A position control unit connected to the assembly connection part and for changing the positions of the first fence assembly and the second fence assembly while moving the assembly connection part along the conveying direction of air; Air heating device having a member. The method of claim 1,
The first fence assembly includes a first fence member having one end rotatably coupled to the heat transfer plate, a second fence member having one end rotatably coupled to the assembly connection portion, and the first fence member and the second fence Air heating apparatus having a position-adjustable fence member, characterized in that it comprises a first rotation connecting portion for rotatably connecting the member. The method of claim 2,
The second fence assembly includes a third fence member having one end rotatably coupled to the assembly connection portion, a fourth fence member having one end rotatably coupled to the heat transfer plate, and the third fence member and the fourth fence Air heating apparatus having a position-adjustable fence member, characterized in that it comprises a second rotation connecting portion rotatably connecting the member. The method of claim 3,
The first fence assembly further includes a first rotation support portion for rotatably supporting one end of the first fence member from the heat transfer plate while the assembly connection portion is moving,
The second fence assembly further comprises a second rotation support part for rotatably supporting one end of the fourth fence member from the heat transfer plate while the assembly connection part is moving. With air heating device. The method of claim 3,
The first fence assembly and the second fence assembly maintain one V (V) shape, or the first fence assembly and the second fence assembly each maintain a V (V) shape. Air heating device having a fence member. The method of claim 3,
The position control unit,
A supporter frame coupled to the central installation groove of the heat transfer plate;
A screw member provided in a longitudinal direction of the heat transfer plate and rotatably coupled to the supporter frame;
A driving unit that rotates the screw member; And
And a moving block connected to the assembly connection part and screwed with the screw member to move on the screw member according to the rotation of the screw member.

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