KR100927039B1 - Blower for using subsurface air - Google Patents

Abstract

PURPOSE: A blower using the underground air is provided to realize the cooling/heating of a house and a vinyl house. CONSTITUTION: A blower using the underground air includes a suction pipe(21), an inlet(22), an impeller(30), a motor(10), an electric transfer device(60), a shaft(40), a shaft supporting bearing(50), a case, a blowhole(23), and a horizontal maintaining unit(70). The suction pipe inhales the underground air. The impeller includes ten blades. The motor delivers the torque to the impeller. The electric transfer device transmits the torque of the motor. The shaft is attached to a boss of center of the impeller. The case protects the impeller.

Description

Blower for using Subsurface Air

In order to heat up the air inside agricultural production facilities such as plastic houses and greenhouses, it is possible to realize the heating and cooling of houses and houses by using underground air layers, which appear due to the geological characteristics, and to drastically reduce the initial investment and operating costs. The present invention relates to a blower for using underground air of an air conditioning and heating facility using an underground air layer.

In more detail, the suction pipe formed with a plurality of through-holes perforated at the lower end of one side installed in the underground space to suck the underground air, and has a suction port having a trapezoidal shape of the upper and lower light coupled to the end of the suction pipe. And an impeller including ten blades including an boss and an inner blade and an outer blade of the impeller coupled to the shaft inside the blower, and transmitting a rotational force of the motor and the motor to transmit the rotational force to the impeller. A shaft connected to a shaft connected to the boss of the center of the impeller and an electric transmission device and a shaft support bearing for supporting the shaft, and a blower for leaking underground air to the case protecting the impeller and the case covering the impeller Forming, including, using a bolt and nut It relates to a blower for using a subterranean formation, including air gimbal portion to control the installation level of the group.

When sunlight penetrates the surface of the facility, it maintains a wavelength of 290 ~ 3000nm, but in geological heat storage materials, it is converted into thermal energy, which is 3000 ~ 5000nm long wave, and heat is accumulated by increasing the temperature inside the facility. In addition, the conventional method using underground heat is using underground heat as a method of drawing ground water and spraying it on a plastic house to prevent heat loss along with heating by thermal energy of water having an average temperature of about 15 ^o C. Currently, the water film system currently used in Korea has a low recycling rate of groundwater because most of the non-circulating method of draining once-used groundwater through drains is one of the poorest countries classified in the OECD. Will be a social issue. In addition, the conventional method of using underground heat is difficult to apply to houses and facility houses because most of the initial investment is excessive by laying pipes underground and using heat storage tanks and heat collecting tanks.

The blower is one of the air feeders used in the air conditioner, the ventilator, or other ventilators. The blower is divided into the axial flow type and the centrifugal blower according to the air transfer method. Especially suitable for air conditioning or ventilation as it can be processed, the centrifugal blower is a multi-blade, radial, limit load type according to the shape and arrangement of blades in the impeller It is classified into an airfoil type and the like, and has its own characteristics in terms of air volume, noise, and efficiency.

The impeller 100 of the conventional sirocco type centrifugal blower shown in FIG. 1 has approximately 40 to 64 multiple blades 110, each of which blades 110 from the inner end 120 to the outer side. End 130 is curved with a predetermined curvature, the direction of the curve is a forward curve (front curve) when looking at the direction of rotation of the impeller 100, and the front end 130, the outer end 130 of the blade 110 ) Is disposed in front of the direction of rotation of the impeller 100 rather than a normal line (N) passing through the inner end 120, the center of the radius of curvature of the blade 110 (C) of the blade 110 Placed in front.

In addition, by the sirocco-type impeller 100 and the blade 110 is to push the air forward due to the characteristics of the shape, so as shown in the air delivery direction of the front of the impeller 100 as the rotational direction of the impeller 100 Is headed.

The conventional limit rod-type impeller 200 shown in FIG. 2 has approximately 6 to 12 blades 210, and each blade 210 has a shape in which an inflection point 270 is formed by bending twice. The blade 210 includes an inner arc portion 250 and an outer arc portion 260 separated by the inflection point 270, and the center C1 of the radius of curvature of the inner arc portion 250 is an impeller 200. As seen from the rotational direction of the blades in front of the blade 210, the semi-centering center (C2) of the outer arc portion 260 is disposed in the rear of the blade 210, unlike the limit rod 100, unlike the limit rod In the type impeller 200, the outer end 230 of the blade 210 is disposed in the rearward curve as viewed in the direction of rotation of the impeller 200 rather than the normal line N passing through the inner end 220. Becomes Accordingly, the shape of the blade 210 is inclined to the rear as a whole, the air delivery direction is toward the rear opposite to the rotation direction as opposed to the sirocco-type impeller 100 as shown.

As described above, the conventional sirocco-type impeller 100 can obtain the most air volume at the same diameter and the same rotation speed, and thus is widely used for various air conditioners and supply / exhaust air. However, since the structural features resulting from the shape of the blade 110 is configured to cause excessive pressure in the hydrodynamics, there is a problem that it is not suitable for high speed rotation and it is difficult to obtain a high pressure. The generation area is wide. Here, the surging refers to a phenomenon in which pulsation occurs in the air volume and the air pressure. In the surging region, the vibration and the noise are large, so that the operation of the blower is difficult.

In addition, the limit rod-type impeller 200 has the advantage that the surge area hardly occurs, but there is a limit on the number of blades, it is difficult to have a maximum of 16 or more blades 200, there is a limit in the amount of air, blades at the same amount of air Since the size of the 200 is 1.2 times as compared to other types, there is a problem that the overall size of the blower increases and the price also increases.

The present invention has been made to provide a blower for using the underground air further improved to solve the above problems and to solve the problems of the prior art, such as, inside an agricultural production facility such as a plastic house or greenhouse Underground air of air-conditioning and heating equipment using underground air layer to realize heating and cooling of house and house by using underground air layer that appears due to geological characteristics to warm air The purpose is to provide a blower for use.

Another object of the present invention, when the rotation direction side of the impeller is called the front side and the opposite side of the rotation direction of the impeller, the outer blade is forward than the normal line passing through the center of rotation and the inner blade of the impeller. It aims to provide a blower for the use of underground air that has the best voltage efficiency by tilting 12 to 18 ^o .

It is still another object of the present invention to provide a blower for using underground air, which has a trapezoidal shape of upper and lower light beams, which reduces the pressure drop over the length of the suction pipe and increases the amount of inflow of underground air. There is this.

The above and other objects of the present invention, the upper and lower sides of the suction pipe 21 formed with a plurality of through holes perforated at the lower end of one side installed in the underground space to suck the underground air, and coupled with the end of the suction pipe 21 10 having a suction port 22 having a trapezoidal shape of light and comprising a boss 34 of the impeller 30 and an inner blade 33 and an outer blade 32 coupled to the shaft 40 inside the blower. It includes an impeller 30 formed by including a blade 31, the motor 10 for transmitting the rotational force to the impeller 30 and the electric transmission device 60 and the impeller for transmitting the rotational force of the motor 10 A shaft 40 connected to the boss 34 at the center of the 30 and a shaft support bearing 50 for supporting the shaft 40 are formed by combining with the shaft 40 to protect the impeller 30. Underground to the case 20 covering the case 20 and the impeller 30 to It is formed to include an air outlet 23 for outflow of the air, and using the underground air formed by using a bolt (71) and a nut (72), including a horizontal holding unit 70 for adjusting the horizontal when installing the blower Is achieved by the blower.

The air blower to use the underground air of the air-conditioning and heating facilities using the underground air layer heats the air inside the agricultural production facilities such as the plastic house or the greenhouse and uses the underground air layer that appears due to the geological characteristics to realize the heating and cooling of the house and the house. On the other hand, the initial investment cost and operation cost can be drastically reduced.

The suction inlet has a trapezoidal shape of upper and lower light, which reduces the pressure drop over the length of the suction pipe, increases the amount of inflow of underground air, and the outer blade is inclined 12 to 18 ^o forward than the normal passing through the inner blade. It provides a blower to use this best underground air.

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 5 show a specific embodiment of the blower for using the underground air according to the present invention, Figure 1 is a schematic side cross-sectional view of a conventional sirocco-type impeller, Figure 2 is a conventional limit 3 is a schematic side cross-sectional view of a rod-type impeller, FIGS. 3 to 5 are front, right and top views showing a blower for using underground air according to the present invention, and FIGS. 6 to 7 are underground according to the present invention. Front and side views showing the impeller of the blower for using air.

The present invention relates to a blower for using underground air of an air-conditioning and heating system using an underground air layer that enables the heating and cooling of houses and houses by using underground air layers, which appear due to the geological characteristics, and significantly reduces initial investment and operating costs. In agricultural production facilities such as greenhouses and greenhouses, energy emitted from the sun during the day is directly used by photosynthesis, or accumulates in the ground or other heat-retaining substances, which are slowly released at night in the form of geothermal energy. It warms up the air inside the facility and raises the temperature.

The geological composition of volcanic ash found in Korea's special geological characteristics is black to dark gray dense basic volcanic rocks made of basalt. It is a young volcanic soil that has formed most of the surface lipids by volcanic activity. The main rocks are basaltic rocks, and are distributed in red scoria, a volcanic debris. The structure and geological media are distributed, and lava dong-gu, musculus (where the precipitation is infinity due to the common or hot poles exposed on the surface), optimal gravel, uphill, river, and sea Korea are formed. There is an air layer of ˜18 ^o C.

Therefore, the blower 1 using the underground air of the present invention is formed by extending the underground space by drilling and embedding the volcanic ash terrain in order to use the special geological characteristics of Korea, but can suck underground air from the porous rock layers. By installing a suction pipe 21 perforated with a plurality of through holes in the lower part thereof, and installing a blower 1 capable of sucking such underground air, the initial investment cost and operating cost can be drastically reduced. The use of geothermal heat can provide a very good effect.

Hereinafter, the present invention will be described with respect to the blower (1) using the underground air.

The blower for using the underground air of the present invention forms a suction pipe 21 in which a plurality of through holes are perforated at the lower end of one side installed in the underground space so as to suck the underground air, and is coupled with the end of the suction pipe 21. It has a suction port 22 having a trapezoidal shape of lowering light, and protrudes perpendicularly to one side of the edge of the plate-shaped boss 34 and the plate-shaped boss 34 coupled to the shaft 40 inside the blower, and radially. It consists of an inner blade (33) formed integrally symmetrically and extending from one end of the outer blade (32), projecting perpendicular to one side of the boss (34), and integrally formed radially symmetrically. The impeller 30 is formed including the ten blades 31, the motor 10 for transmitting the rotational force to the impeller 30 and the electric transmission device 60 for transmitting the rotational force of the motor (10) And Im The shaft 40 is connected to the boss 34 at the center of the claw 30 and the shaft support bearing 50 for supporting the shaft 40 is formed by combining with the shaft 40, and the impeller 30 is formed. The case 20 and the case 20 covering the impeller 30 are formed to include a blower port 23 that discharges underground air, and the blower is installed using the bolt 71 and the nut 72. It is formed to include a horizontal holding unit 70 to adjust the horizontal horizontal.

In more detail, the impeller is formed by integrally forming a blade-shaped boss and a blade, which refers to an outer blade and an inner blade, and protrude perpendicularly to one side of the edge of the plate-shaped boss and the plate-shaped boss that are coupled to the shaft. Impeller formed by including an outer blade formed integrally radially symmetrically and extending from one end of the outer blade, protruding perpendicular to one side of the boss, the inner blade formed integrally radially symmetrically integrated 6 and 7 are shown. In addition, when the suction pipe 21 is provided with a plurality of through holes perforated to suck underground air from the porous rock layer, and the suction port 22 has a trapezoidal shape of cross-border light having a cross-sectional curve, By expanding, the kinetic energy of the flow is reduced and the dynamic pressure is increased in the underground air discharge area of the suction port 22, so that the pressure drop over the length of the entire suction pipe 21 is reduced and the amount of inflow of underground air can be increased. The suction pipe 21 is formed to include a manhole through which the suction pipe 21 penetrates the contact surface with the ground to prevent the inflow of dirt or rainwater.

As the electric transmission device 60, a gear, a belt, a chain, a rope, a cylindrical friction wheel, or the like may be used.

The horizontal holding part 70 is installed between the support member 73 and the bottom member 74 and adjusts the horizontal level of the blower 1 for using underground air by adjusting the nut 72 and the bolt 71. And thus, the effect of dustproof and soundproofing is obtained, and by installing a rubber material between the nut 72 and the bolt 71, the effects of dustproofing and soundproofing can be made remarkable.

Hereinafter, the impeller 30 of the blower 1 for using the underground air of the present invention will be described.

The impeller 30 is an impeller for a centrifugal blower having ten blades 31 arranged so as to be aligned in parallel in the longitudinal direction with respect to the rotation axis of the impeller 30 and extending radially in the transverse direction. 31 refers to the rotational side of the impeller 30 in the front and the opposite side of the rotational direction of the impeller 30 to the rear, the center of rotation of the impeller 30 and the inner blade 33 Since the outer blade 32 is inclined 12 to 18 ^o forward than the normal to pass through, as shown in Table 1 below, the voltage efficiency is the best.

In addition, the inner blade 33 of the blade 31, as shown in the accompanying Figure 7 is characterized in that the trapezoidal shape of the ordinary light beam narrows, thereby increasing the inflow of underground air.

In addition, when the temperature of the underground air sucked and blown by the blower during heating is lower than the set temperature, it can be formed by including a heater in the blower of the blower port 23 side of the blower to heat the underground air, using the underground air By installing a sound absorbing plate 90 inside the case 20 of the blower 1 for reducing vibration and noise.

On the other hand, in Table 1, when the rotational direction side of the impeller is called the front side and the opposite side of the rotational direction of the impeller is called rear, the outer side of the normal passing through the center of rotation and the inner blade 33 of the impeller The result of the performance test according to the case in which the blade 32 is inclined to 12 ^o or less, 12 to 18 ^o or 18 ^o or more toward the front side, and the conditions of the performance test are 120 (CMM) for air flow and 180 mmAq for static pressure (SP). In the case of the motor, the power is 7.5Kw, the voltage 380V, the current 15.1Amp, the power factor 0.79%, the efficiency 0.87%. In addition, the diameter of the wind pipe is 400mm, the cross-sectional area is 0.1257m ² , and when the angle of inclination toward the front side is 12 ^o or less, the temperature is 10 ^o C, the air specific weight is 1.2473 Kg / m ³ , and the temperature is 12 to 18 ^o 9 ^o C, specific air weight is 1.2517 Kg / m ³ and above 18 ^o , the temperature is measured at 11 ^o C, specific air weight is 1.2429 Kg / m ³ , and the test method is in accordance with KS B 6311.

Dynamic pressure (blade angle 12 ^o or less) (unit: mmAq) Dynamic Pressure (Blade Angle 12 ~ 18 ^o ) (Unit: mmAq) Dynamic pressure (blade angle 18 ^o or more) (unit: mmAq) One 16.00 15.00 13.00 2 16.00 16.00 14.00 3 16.50 16.50 15.00 4 17.00 17.00 16.00 5 18.00 17.50 16.50 6 20.00 18.50 15.50 7 17.50 18.00 18.00 8 15.50 16.50 16.50 9 14.00 13.50 12.50 10 15.50 14.50 13.50 11 16.50 16.50 15.50 12 17.00 17.00 16.00 13 17.50 17.50 17.50 14 19.50 19.50 18.00 15 17.00 16.00 17.00 16 15.00 14.50 16.00 Average dynamic pressure 16.78 16.50 15.66 Current average 14.28 (A) 12.33 (A) 13.45 (A) Voltage average 380 (V) 380 (V) 380 (V) Air flow average 122.47 (CMM) 121.23 (CMM) 118.51 (CMM) Voltage efficiency 61.23 (%) 69.77 (%) 62.27 (%)

As shown in Table 1, the voltage efficiency is a value obtained by dividing air power by axial power, and the outer blade 32 is inclined 12 to 18 ^{o from} the normal line passing through the center of rotation of the impeller and the inner blade 33. Shows the results of the optimal performance test.

The following test methods shall be in accordance with Ref. 1 and Ref. 2 for the test apparatus, pre-test preparations, test methods and calculation methods in accordance with KS B 6311.

[Reference 1]

[Reference 2]

Configurations shown in the embodiments and drawings described herein are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, and various equivalents that may be substituted for them at the time of the present application and It should be understood that there may be variations.

Therefore, although the present invention has been described in detail with reference to the specific embodiments described, it will be apparent to those skilled in the art that various modifications and changes can be made within the scope of the technical idea of the present invention, and such modifications and modifications belong to the appended claims. It is natural.

1 is a schematic partial side cross-sectional view of a conventional sirocco type impeller.

Figure 2 is a schematic partial side cross-sectional view of a conventional limit rod type impeller.

3 to 5 is a front view, a right side view and a plan view showing a blower for using underground air according to the present invention.

6 to 7 is a front view and a side view showing the impeller of the blower for using the underground air according to the present invention.

             Explanation of symbols on the main parts of the drawings

  C: center of curvature radius C1, C2: center of radius N: normal

  1: blower 10: motor 20: case

 21: suction pipe 22: suction port 23: blower

 30 impeller 31 blade 32 outer blade

 33: inner blade 34: boss 40: shaft

 50: shaft support bearing 60: electric transmission device 70: horizontal holding part

 71: bolt 72: nut 73: support member

 74: bottom member 90: flaw plate

100, 200: impeller 110, 210: blade 120, 220: inner end

130, 230: outer edge 250: inner arc portion 260: outer arc portion

270 inflection point

Claims (4)

A suction pipe having a plurality of through holes drilled therein so as to suck underground air; A suction port having a trapezoidal shape of upper and lower light beams coupled to the end of the suction pipe; It protrudes vertically on one side of the plate-shaped boss coupled to the shaft and the edge of the plate-shaped boss, extending radially symmetrically integrally from one end of the outer blade, protrudes perpendicularly to one side of the boss, An impeller including ten blades formed of an inner blade integrally formed radially symmetrically; A motor for transmitting rotational force to the impeller; An electric transmission device for transmitting the rotational force of the motor; A shaft connected with the boss of the center of the impeller; A shaft support bearing for supporting the shaft; A case protecting the impeller; A tuyeres for leaking underground air by an impeller; Formed to include, including; horizontal holding unit for adjusting the horizontal when installing the blower using the bolt and nut, The blade is When the rotational direction side of the impeller is called the front side and the opposite side of the rotational direction of the impeller is called rear, the outer blade is inclined 12 to 18 ^o forward from the normal line passing through the center of rotation of the impeller and the inner blade. Blower for using underground air, characterized in that. delete The blower according to claim 1, wherein the inner blade of the blade has a trapezoidal shape of an ordinary light beam. The blower according to claim 1, wherein a sound absorbing material is formed inside the case of the blower.

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