KR20050014270A - A inspection door mounting structure of ventilation system - Google Patents

Abstract

PURPOSE: A check door mounting structure of a ventilation system is provided to reduce the number of work processes for attaching and detaching a check door by shielding a check port with fixing or separating one end of the check door. CONSTITUTION: A check door mounting structure of a ventilation system is composed of one surface(50') of a body case(50) on which a check port(104) for being a hole inspecting the inside and replacing parts is installed and two opening and closing check doors(210,220) for shielding selectively the check port formed on one surface of the body case. One end of the check door is mounted movably on the front side of the body case. A fixing tool(212) projected forward and a hanging tool(222) caught by the fixing tool are formed correspondently to each other on one end of two check doors.

Description

A inspection door mounting structure of ventilation system

The present invention relates to a ventilation system, and more particularly to a mounting structure of the inspection door for shielding the inspection opening formed on the front of the main body case of the ventilation system.

In recent years, due to problems such as energy conservation and noise, the residential space of human beings is gradually becoming airtight and insulated. However, the air in these closed spaces gradually changes to carbon dioxide and contaminates over time, thereby inhibiting the breathing of life.

Therefore, places where many people stay in narrow spaces, such as offices or vehicles, should be ventilated from time to time. At this time, the ventilation apparatus using the total heat exchange system is used normally. This is for supplying external air while maintaining the indoor air temperature, and for exhausting the indoor air.

1 is a perspective view of an exterior of a conventional ventilation device. As shown in the drawing, the outside air inlet 12 is formed on one side of the main body case 10 forming the exterior so as to suck the outside air.

An inside of the outside air inlet 12 is formed with a suction duct (not shown) that serves as a passage for guiding the outside air sucked from the suction hole 12, and the air guided by the suction duct is discharged from the room. Transfer to a total heat exchanger (not shown) for heat exchange with the air.

The front of the body case 10 is equipped with a check door 30 to be described in detail below, the check door 30 is installed in front of the heat exchanger to facilitate the removal of the heat exchanger, while the ventilation device Make it easy to check the inside.

The control box 16 is installed at the front right end of the main body case 10. The control box 16 is equipped with various components for controlling the operation of the ventilation device.

The outside air passing through the heat exchanger (not shown) from the outside air inlet 12 is opposite to the intake hole 12 by an outside air supply unit (not shown) formed in the main body case 10. It is supplied to the room through the external air supply hole 18 formed in the.

On the other hand, the indoor air inlet 20 is formed on the side of the external air supply hole 18, the indoor air is sucked into the main body case 10 of the ventilation device. In addition, an indoor air exhaust hole 22 through which the indoor air sucked into the inside of the ventilator from the indoor air inlet 20 is formed at a side surface of the external air inlet 12.

2 is an exploded perspective view of the mounting structure of the check door 30, Figure 3 shows a state in which the check door 30 is mounted.

As shown in these drawings, the front of the main body case 10 is formed with a check opening 40 through which the heat exchanger and the like can enter and exit, such that the check opening 40 is selectively opened and closed. do.

The inspection door 30 is composed of a substantially rectangular flat plate to shield the inspection hole 40 directly, and the side guide (34) extending vertically bent forward from the side end of the shielding surface (32) 34 '), and the upper and lower ends may be formed by bending the end portion 36 to vertically bend forward from the upper and lower ends of the shielding surface 32.

In addition, the left side guide 34 of the check door 30 has a bracket insertion groove 34a into which the left bracket 38 to be described below is inserted. The left bracket 38 is further installed on the main body case 10 to support the left side of the check door 30.

Therefore, the left bracket 38 is inserted into the bracket insertion groove 34a to fix the check door 30. That is, the right end of the left bracket 38 is inserted into the bracket insertion groove 34a and the left end is fastened to the main body case 10 so that the left side of the inspection door 30 is connected to the main body case 10. Make it tight.

On the other hand, the right side of the inspection port 40 is provided with a right bracket 42 for fixing the right side guide 34 'of the inspection door 30. The right bracket 42 is a mounting portion 42a which is a part fastened to the main body case 10, a side portion 42b extending vertically bent forward from the mounting portion 42a, and a tip end of the side portion 42b. It consists of the front part 42c formed by bending vertically from the left side.

Therefore, when the mounting portion 42a of the right bracket 42 is mounted to the main body case 10 by a screw or the like, the front portion 42c of the right bracket 42 is connected to the inspection door 30. The right side of the check guide 30 is fixed in contact with the tip of the right side guide 34 '.

The conventional ventilation device inspection door as described above has the following problems.

In the conventional inspection door 30 mounting structure, the left side of the inspection door 30 is fixed by the left bracket 38, and the right side is configured to be fixed by the right bracket 42.

That is, the right side guide 34 'of the inspection door 30 is inserted and fixed between the front portion 42c of the right bracket 42 and the front of the main body case 10, but the inspection door ( Sliding occurs between the front portion 42c and the front end portion of the right side guide 34 'by the weight of 30), and eventually, the right side portion of the inspection door 30 sags downward. The deflection of the door 30 is well illustrated in FIG. 3.

In this case, the inspection door 30 does not completely shield the inspection opening 40, and thus the upper right side of the inspection opening 40 is partially opened as shown in FIG. 3. Therefore, while the air inside is leaked to the outside or the outside air is introduced into the ventilator, the ventilation of the room is not properly performed, while the thermal efficiency of the ventilator is reduced.

In addition, the deflection of the check door 30 as described above may occur when the right bracket 42 is not correctly mounted due to a worker's work failure. On the other hand, the check door 30 is initially correctly mounted. Even if it is, even if there is a gap between the right bracket 42 and the right side guide 34 'of the check door 30 occurs as the use continues.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide an inspection door mounting structure in which an inspection door for shielding an inspection opening of a ventilation system is correctly mounted.

Another object of the present invention is to provide an inspection door mounting structure of a ventilation system that can be easily opened and closed.

1 is a perspective view of a ventilation apparatus according to the prior art.

Figure 2 is an exploded perspective view showing the configuration of the ventilation apparatus check door mounting structure according to the prior art.

Figure 3 is a front view showing an embodiment of the ventilation apparatus check door mounting structure according to the prior art.

Figure 4 is an exploded perspective view showing the main configuration of the ventilation system employing a preferred embodiment of the ventilation system check door mounting structure according to the present invention.

Figure 5 is a cut-away perspective view showing the internal configuration of the ventilation system employing a preferred embodiment of the ventilation system check door mounting structure according to the present invention.

Figure 6 is a partial front view showing the installation state of the total heat exchanger that is the main configuration of the ventilation system according to the present invention.

Figure 7a is a partial perspective view of the first embodiment of the ventilation system check door mounting structure according to the present invention.

Figure 7b is a front view of the inspection door in the closed state in the first embodiment of the ventilation system inspection door mounting structure according to the present invention.

8A is a partial perspective view of a second embodiment of a ventilation system check door mounting structure according to the present invention;

8B is a partial perspective view of the ventilation door inspection door mounting structure according to the second embodiment of the present invention in the fully opened state;

Figure 9 is a state diagram showing a state in which air flows inside the ventilation system according to the present invention during the full-heat ventilation mode operation.

10 is a state diagram showing a state in which air flows inside the ventilation system according to the present invention during the normal ventilation mode operation.

Explanation of symbols on the main parts of the drawings

50. Main body case 52. External air intake

54. Left suction duct 56. Indoor air outlet

58. Exhaust Fan Housing 60. Heat Exchanger

61. Support frame 62. Device support

63. Filter support 68. Prefilter

71. Handle 73. High Performance Filter

80. Exhaust fan 82. External air outlet

84. Outlet mounting hole 86. Air supply fan housing

88. Indoor air intake port 90. Indoor air intake hole

92. Right suction duct 94. Damper

96. Air supply fan 100. Control box

102. Ceiling Fixture 104. Checking Fixture

200. Inspection door 210. Left door

212. Fixture 220. Right door

222. Hanger 224. Hinge

300. Fastening means 310. Body

320. Tightening lever 322. First half

322 '. 324. Second half

330. Release button 340. Fastening plate

342. Fastening end 344. Guide hole

344 '. Guide section 352. Right side bolt

354. Left Bolt

In order to achieve the object as described above, the inspection door mounting structure of the ventilation system according to the present invention is provided on one side of the main body case and the one side of the main body case in which an inspection opening that is an internal inspection and an internal parts replacement window is formed. It includes two hinged check doors for selectively shielding the check opening is formed, one end of the check door is rotatably mounted on the front of the main body case.

In addition, the two inspection doors on one side end are formed with fasteners protruding forward and a hook tool hanging on the fasteners to correspond to each other.

In addition, the present invention is a case that selectively opens and closes one side surface of the main body case is formed an inspection opening for the internal inspection and the internal parts replacement window, and the inspection opening formed on one side of the main body case by the push or pull operation And a fastening means formed at one end of the inspection door and fixed to one side of the main body case.

The fastening means includes: a body in which a spring is embedded therein; A fastening lever installed to penetrate the body and having one end selectively protruding forward; An opening button to which the lower end of the fastening lever is selectively hooked and fixed; The fastening guide is guided by one end of the fastening lever, and includes a fastening plate on which one end is selectively walked on one side of the main body case.

According to the inspection door mounting structure of the ventilation system according to the present invention having such a configuration, the reduction of heat exchange efficiency due to the poor coupling of the inspection door is prevented, there is an advantage that the opening and closing of the inspection door is easier.

4 schematically illustrates an example of a ventilation system according to the present invention in an exploded perspective view, and FIG. 5 shows an internal configuration of the ventilation system according to the present invention. 6, the configuration of the heat exchanger and the support frame according to the present invention is shown in cross section. 7A and 7B show a first embodiment of the inspection door mounting structure according to the present invention, and FIGS. 8A and 8B show a second embodiment of the inspection door mounting structure according to the present invention.

As shown in these figures, a substantially rectangular box-shaped body case 50 forms an appearance. The body case 50 forms the appearance of the entire product, and supports the installation of the internal structure to protect, and at the same time serves to block foreign matter from entering the product from the outside.

On the left side of the main body case 50, an external air inlet 52, which is an inlet for inhaling external air, is installed to protrude laterally. An inlet mounting hole (not shown) is formed at the left end of the main body case 50 so that the external air inlet 52 is inserted and mounted therein.

Inside the outside air inlet 52, a left suction duct 54 is disposed between the outside air intake 52 and the heat exchanger 60 so that the outside air drawn from the intake 52 can reach the heat exchanger 60, which will be described below. Is formed. That is, the left suction duct 54 serves as a suction passage that guides the outside air to be sucked smoothly.

An internal heat exchanger 60 is provided at an inner central portion of the main body case 50. The heat exchanger (60) has a hexagonal columnar shape and has a cross-flow plate type structure. That is, it is configured to separate the supply and exhaust passages with partition plates of special processed paper so that outside air and indoor air are not mixed with each other.

Therefore, the heat exchanger 60 as described above allows each air having a temperature difference to pass through different flow paths, thereby allowing moisture and sensible heat to exchange latent heat by a high-efficiency heat exchanger film forming layers of the different flow paths. Heat exchange causes heat exchange. That is, the special processing paper used for the total heat exchanger 60 is characterized by passing only heat and moisture without passing air.

The total heat exchanger (60) having the configuration described above performs electrothermal exchange between the air supply and the exhaust in the apparatus, absorbs the heat of the air from the exhaust to the outside, and transfers it to the air supplied to the room, whereby the state of the indoor air is Make it less affected.

This electrothermal ventilation mode may be implemented by the user's selection. That is, in general, the heat transfer ventilation mode as described above is mainly used in summer and winter when the temperature difference between the indoor and outdoor is large, and when the temperature difference between the indoor and outdoor is not very large, such as spring or autumn, the damper 94 to be described below By changing the passage of the air discharged to the outside to prevent the air exhausted to pass through the heat exchanger 60, it is also possible to use in the normal ventilation mode.

On the other hand, the upper and lower ends of the heat exchanger 60 having a hexagonal cross-section is provided with a support frame 61, the heat exchanger 60 long before and after. The support frame 61 supports the load of the total heat exchanger 60 so that the total heat exchanger 60 is firmly supported, and also serves as a guide rail when the front heat exchanger 60 is attached and detached.

The support frame 61 of the heat exchanger 60 is an element support 62 for guiding forward and backward movement while supporting the load of the heat exchanger 60 and a filter extending laterally from the element support 62. It consists of a support part 63.

The element support portion 62 is composed of a main body contact surface 62 'contacting the main body case 50, and an element contact surface 62 "formed to protrude upward from both ends of the main body contact surface 62'. The element support portion 62 has a central portion recessed to form a tunnel shape. The lower end portion of the tunnel shape is in contact with the main body case 50, and the filter support portion 63 is formed of the element support portion 62. And an inclined surface 63 'which is formed to be inclined laterally downward from the side end, and a bent rib 63 "which is formed to be bent vertically from the inclined surface 63'.

Side guides 64 are provided at the side edges of the heat exchanger 60. The side guide 64 is composed of an element support portion 65 surrounding the edge of the heat exchanger 60, and a filter support portion 66 protruding from the element support portion 65. The filter support portion 66 is composed of a vertical surface 66 'protruding vertically from the element support portion 65, and a bending rib 66 "formed laterally bent from the vertical surface 66'.

That is, the element support portion 65 of the side guide 64 is provided in the corner of the heat exchanger 60 is formed in a substantially 'b' shape so as to be in contact with both sides of the corner at the same time, the 'b' shaped A pair of filter support portions 65 are formed to protrude from each surface of the element support portion 65.

Accordingly, the prefilter 68 is mounted to slide forward and backward between the support frame 61 and the filter support 63 of the side guide 64 facing each other. The prefilter 68 is provided to both sides of the lower portion of the total heat exchanger (60) to filter the foreign matter in the air.

That is, the pre-filter 68 provided on the lower left side of the total heat exchanger 60 into which the external air is sucked increases the cleanliness of the air supplied to the room by filtering out the foreign matter mixed in the external air, and the heat exchanger 60 ) Protects against foreign objects. In addition, the pre-filter 68 provided on the lower right side of the heat exchanger (60) filters the foreign matter mixed in the air exhausted from the inside to the outside, thereby protecting the heat exchanger (60) to extend the life. Will be

The total heat exchanger (60) is generally provided with two before and after, such a heat exchanger (60) is supported by the support frame 61 of the heat exchanger (60) and slide back and forth. Therefore, the front surface of the heat exchanger 60 is further provided with a handle 71 for facilitating forward and backward movement.

A high performance filter 73 is further provided on the upper right side of the total heat exchanger 60. The high performance filter 73 serves to filter back the dust particles in the intake air. In other words, the pre-filter 68 of the fibrous mat form, the large dust in the air is first filtered, the heat is transferred while passing through the heat exchanger 60, the air passed through the heat exchanger (60) Is filtered by the high-performance filter 73 to fine foreign matter again.

On the other hand, the left rear end of the main body case 50 is provided with an indoor air outlet 56 for discharging the indoor air to the outside, the outlet 56 is an outlet mounting hole (not shown) formed in the main body case 50 Not inserted) and fixed. In addition, an exhaust fan housing 58 is formed inside the outlet mounting hole to guide the indoor air forcedly blown by the exhaust fan 80 to the indoor air outlet 56.

An indoor air exhaust fan 80 is provided inside the exhaust fan housing 58. The exhaust fan 80 serves to forcibly blow the air sucked through the indoor air intake port 88 to be described below to the discharge port 56. Preferably, the exhaust fan 80 is configured as a siroco fan.

An external air outlet 82 is formed at the right end of the main body case 50, that is, on the side opposite to the position at which the external air inlet 52 is installed. The outlet 82 is inserted into the outlet mounting hole 84 formed on the right side of the main body case 50 and is installed to protrude in a right direction from the right side of the main body case 50 to the right side. In addition, an air supply fan housing 86 is formed in the air outlet mounting hole 84 to guide external air forcedly blown from the air supply fan 96 to the air outlet 82 to be described below.

An indoor air suction port 88 is provided at the right rear end of the main body case 50, that is, the opposite side to the position where the indoor air discharge port 56 is installed. The indoor air inlet 88 is installed to protrude from the right side of the main body case 50 to the right side, and is fixed to the circular indoor inlet mounting hole 90 formed at the rear end of the right side of the main body case 50. do. In addition, a right suction duct 92 is formed inside the indoor suction hole mounting hole 90 to guide the air sucked from the indoor air suction hole 88 to the heat exchanger 60.

On the other hand, a damper 94 is provided inside the right suction duct 92 to selectively flow the indoor air sucked through the indoor air suction port 88 to the heat exchanger 60. That is, the damper 94 opens and closes the right suction duct 92 under the control of the control box 100 to be described below. Therefore, if the damper 94 shields the right suction duct 92, the indoor air sucked through the indoor air intake port 88 does not pass through the heat exchanger 60, and the indoor air outlet 56 Is discharged to the outside through).

An air supply fan 96 is provided between the external air outlet 82 and the indoor air outlet 56 to force external air to the external air outlet 82. Therefore, the outside air sucked through the outside air inlet 52 is discharged into the room through the outside air outlet 82 by the air supply fan 96.

The front of the main body case 50 is provided with a control box 100 to be described below, the ceiling fixture 102 is further installed so that the ventilation system is installed on the ceiling of the house. On the other hand, the front opening of the main body case 50, the inspection opening 104 is formed, the front of the inspection opening 104 is provided with an inspection door 200 to be described below to selectively open and close the inspection opening 104 do.

The control box 100 is installed at the right end of the main body case 50. A control unit is formed inside the control box 100 to control the operating conditions of the ventilation system. That is, the power is interrupted to turn on / off the ventilation system, and the fan speed is controlled by controlling the fan rotation speed of the air supply fan 96 and the exhaust fan 80. On the other hand, by controlling the driver (not shown) of the damper 94 controls the ventilation method and the like to enable the selection of the total heat exchange mode or the general ventilation mode.

An inspection door 200 is installed in front of the inspection opening 104 to shield the inspection opening 104. Therefore, when it is necessary to replace or inspect the internal parts including the heat exchanger 60, the inspection door 200 may be opened and the heat exchanger 60 may be taken out to work.

The inspection door 200 is fastened to the front surface 50 'of the main body case by a fastening means to selectively shield the inspection opening 104. Hereinafter, the inspection door 200 mounting structure will be described with reference to FIGS. Referring to 8b, the configuration of the first and second embodiments of the present invention will be described.

First, referring to FIG. 7A and FIG. 7B, the inspection door 200 includes a left door 210 and a right door 220. The left door 210 is coupled to the front surface 50 'of the main body case so that the left end is pivoted forward by the hinge 230.

In addition, a fastener 212 is provided at the middle of the right end of the left door 210. The fastener 212 is a hook 222 to be described below is fastened to be fastened, the support portion 212 'is formed to protrude forward from the left door 210 and the tip of the support portion 212' And a fixing portion 212 "extending vertically upwardly from.

The right door 220 is installed on the right side of the inspection opening 104. The right door 220 is fixed to the front end 50 'of the main body case by a hinge 230. In addition, the hook 222 is rotatably installed at the center of the left end of the right door 220.

The hook 222 is configured in the approximately 'b' shape is coupled to the right door 220 by the hinge 224. The hook 222 is coupled to the right side door 220 by the hinge 224, the connecting portion 222 'is a flat plate having a predetermined length, and the front of the front end of the connecting portion 222' It consists of a locking portion 222 "vertically bent to be integrally formed.

Therefore, when the left door 210 and the right door 220 shields the inspection opening 104, the left door 210 and the right door 220 are in close contact with the front surface 50 'of the main body case. The hook 222 of the right door 220 is engaged with the fixture 212 of the left door 210 to maintain the fastening state of the check door 200.

Next, referring to FIGS. 8A and 8B, the structure of the second embodiment of the present invention will be described. The inspection door 200 is formed of a substantially rectangular flat plate, and the left end of the inspection door 200 is the front of the main body case ( 50 ') is rotatably coupled forward by a hinge 230.

Therefore, the inspection door 200 is rotated forward with the left end to the shaft to open and close the inspection opening 104, the inspection door 200 is in the center of the right end of the inspection door 200, the front of the main body case Fastening means 300 is provided to be tightly fixed to the 50 (50 ').

The fastening means 300 is installed to penetrate the inspection door 200 back and forth, the body 310 is fixed to the inspection door 200, the fastening lever is installed to penetrate the front and rear of the body 310 ( 320, an opening button 330 provided at the lower end of the front surface of the body 310, and a fastening plate 340 formed on the rear surface of the body 310.

The fastening lever 320 is' 'The shape is configured to guide the movement of the fastening plate 340. That is, the fastening lever 320 has a first half portion 322 selectively shielding the opening 310 'of the body 310, and a second half portion 324 vertically bent from an upper end of the first half portion 322 and extended rearward. It is composed of Thus, the bent portion between the first half 322 and the second half 324 is hinged to the body 310.

The lower end of the first half portion 322 is formed to have a stepped surface 322 ′. The stepped surface 322 ′ is configured to selectively rotate forward by engaging an upper surface of the opening button 330. That is, the fastening lever 320 is installed so that the front part 322 rotates forward by a spring (not shown) embedded therein.

The open button 330 is hinged to the upper end of the body 310, the rear is a compression spring 332 for pushing the open button 330 forward. Therefore, when the stepped surface 322 ′, which is the lower end of the fastening lever 320, is hung from the upper end of the opening button 330, the lower end of the opening button 330 is pushed backward, and the fastening lever 320 is closed. The stepped surface 322 ′ of the first button 330 deviates from the upper end of the opening button 330 and protrudes forward by the force of the inner spring (not shown).

The fastening plate 340 installed on the rear surface of the body 310 is composed of a substantially square flat plate, the fastening end portion 342 is formed at one side of the lower end of the fastening plate 340 of the square flat plate. The fastening end 342 is bent backward and then bent downward again to extend. Accordingly, the fastening end 342 is hooked to the rear of the right end of the inspection opening 104 formed on the front surface 50 'of the main body case.

A guide hole 344 is formed in the center of the fastening plate 340. The guide hole 344 is formed to have a substantially triangular shape, the guide portion 344 ′ is formed at the lower end of the triangular guide hole 344.

On the other hand, the back of the body 310 is provided with two bolts 352, 354 to the left and right to protrude rearward, the right bolt 352 on the right of these bolts (352, 354) is the fastening end of the fastening plate 340 It acts as a pivot for 342 to rotate. That is, the right bolt 352 is located at the upper end of the triangular guide hole 344 and the fastening plate 340 flows around the right bolt 352.

The left side bolt 354 formed on the left side of the right side bolt 352 serves to guide the movement of the guide part 344 'of the guide hole 344. That is, when the fastening plate 340 is rotated by the second half 324 of the fastening means 300, the guide part 344 'of the guide hole 344 is guided by the right bolt 352.

Hereinafter, the operation of the ventilation system check door mounting structure according to the present invention will be described.

First, referring to a state in which air outside the room flows through the ventilation system according to the present invention, FIG. 9 illustrates an air flow state through the ventilation system when the electrothermal ventilation mode is operated. This electrothermal ventilation mode is generally used when there is a large difference in temperature and humidity between indoors and outdoors, such as summer or winter.

Referring to the ventilation state as shown in the drawing, the damper 94 opens the right suction duct 92 according to a control command in the control box 100 according to the user's selection of the heat transfer ventilation mode.

In addition, according to the operation of the air supply fan 96, external air is sucked into the ventilation system through the external air inlet 52, and the external air is guided by the left suction duct 54 to transfer the heat. It is sucked into the total heat exchanger (60) through the lower left side of the exchanger (60). At this time, since the external air passes through the pre-filter 68 mounted on the lower left side of the heat exchanger (60), foreign matter in the air is first filtered and then sucked into the heat exchanger (60).

The air sucked into the heat exchanger (60) exchanges heat and moisture from the discharged indoor air and then is discharged through the upper right side of the heat exchanger (60). At this time, since the high-performance filter 73 is installed on the upper right side of the heat exchanger (60), foreign matters of the air passing through the heat exchanger (60) are filtered again, resulting in cleaner air.

Air passing through the heat exchanger 60 and the high performance filter 73 is forcibly blown by the air supply fan 96 through an external air outlet 82 installed on the right side of the main body case 50. It is discharged to the room.

On the other hand, the indoor air is exhausted to the outside by the operation of the exhaust fan 80, the indoor air is sucked into the ventilation system through the indoor air inlet 88 and then guided by the right suction duct 92 And is sucked into the total heat exchanger (60) through the lower right side of the total heat exchanger (60).

At this time, since the pre-filter 68 is mounted on the lower right side of the heat exchanger 60, foreign matter in the indoor air is filtered out. Therefore, since the clean air is sucked into the heat exchanger (60), the heat exchanger (60) is protected and its life is extended more.

The indoor air sucked into the heat exchanger (60) exchanges heat and moisture to outside air sucked from the outside, and then exits through the lower left side of the heat exchanger (60). The indoor air exiting the heat exchanger (60) is forcedly blown by the exhaust fan (80) and exhausted to the outside through the indoor air outlet (56) provided at the rear end of the left side of the main body case (50). .

Next, an air flow state in the general ventilation mode will be described with reference to FIG. 10. In the general ventilation mode, when indoor and outdoor temperature and humidity differences are small, such as spring or autumn, indoor air is bypassed by the heat exchanger 60 and bypassed immediately.

Therefore, when the user selects the general ventilation mode, the damper 94 shields the right suction duct 92 according to a control command inside the control box 100. In this case, the air sucked through the indoor air intake port 88 is forcibly blown to the indoor air outlet 56 by the exhaust fan 80 and discharged to the outside without passing through the heat exchanger 60.

On the other hand, when looking at the flow of the outside air, according to the operation of the air supply fan 96, the outside air is sucked into the ventilation system through the outside air inlet 52, the outside air is the left side suction duct (54) It is guided by) and is sucked into the heat exchanger 60 through the lower left side of the heat exchanger (60). At this time, since the external air passes through the pre-filter 68 mounted on the lower left side of the heat exchanger (60), foreign matter in the air is first filtered and then sucked into the heat exchanger (60).

Since the air sucked into the heat exchanger (60) does not pass through the heat exchanger (60), the discharged indoor air is discharged through the upper right side of the heat exchanger (60) without exchanging heat and moisture. At this time, since the high-performance filter 73 is installed on the upper right side of the heat exchanger (60), foreign matters of the air passing through the heat exchanger (60) are filtered again, resulting in cleaner air.

Air passing through the heat exchanger 60 and the high performance filter 73 is forcibly blown by the air supply fan 96 through an external air outlet 82 installed on the right side of the main body case 50. It is discharged to the room.

As described above, in the general ventilation mode, unlike in the case of the total heat ventilation mode, heat and moisture are not exchanged inside the heat exchanger 60.

Next, the removal process of the check door 200 according to the present invention will be described with reference to FIGS. 7A to 8B.

First, referring to the operating state of the first embodiment illustrated in FIGS. 7A and 7B, the right door 220 is moved backward in the state in which the left door 210 is pushed backward to be in close contact with the body case front surface 50 ′. Rotate At this time, the hook 222 of the right door 220 is draped downward, and when the hook 222 is caught by the fastener 212 of the left door 210, the left door 210 and the right door 220 is fixed.

That is, when the connecting portion 222 ′ of the hook tool 222 is positioned between the fixing part 212 ″ of the fastener 212 and the front side of the left door 210, the locking part of the right door 220 is formed. 222 "is hooked to the left end of the fixing part 212" of the fastener 212, and the state at this time is shown in Figure 7b.

And, in order to open the right door 220 and the left door 210 fastened in this way, if the locking portion 222 "of the hook 222 is held in the clockwise direction, The fixing tool 212 is peeled off, and when the left end of the right door 220 and the right end of the left door 210 are pulled forward, the check hole 104 is opened.

Next, the opening and closing process of the inspection door 200 according to the second embodiment shown in FIGS. 8A and 8B will be described. The inspection door 200 pushes the right end of the inspection door 200 backward in the open state as shown in FIG. 8A to closely contact the body case front surface 50 ′.

Then, when pushing the fastening lever 320, the first half 322 of the fastening means 300 by hand close to the rear, the fastening end 342 is fixed to the body case front surface 50 '. That is, when the first half 322 of the fastening lever 320 is pushed backward, the rear end of the second half 324 rises upward.

In this case, the fastening plate 340 is rotated in the clockwise direction (in Fig. 8b) as the lower end of the fastening end portion 342 in accordance with the upward movement of the second half portion 324 in the state as shown in Figure 8b. In this case, the guide portion 344 ′ of the guide hole 344 is guided by the left bolt 354.

As described above, when the first half 322 of the fastening lever 320 is closely attached to the rear to completely shield the opening 310 ′ of the body 310, the fastening plate 340 is kept horizontal. In other words, the fastening end 342 faces the left side (in Fig. 8b) and hangs on the front surface 50 'of the main body case. Therefore, the inspection door 200 is to maintain a shielded state.

On the contrary, the case of opening the inspection door 200 will be described. When the lower end of the opening button 330 is pressed in the state in which the inspection door 200 is closed, the stepped surface 322 'of the lower end of the fastening lever 320 is separated from the upper end of the opening button 330, It protrudes forward by spring (not shown) forces.

In this case, the latter half portion 324 of the fastening lever 320 is rotated downward while the fastening plate 340 is rotated in a counterclockwise direction (in FIG. 8B) in a horizontal state so that the fastening end portion 342 is in FIG. 8B. It goes down together. Therefore, since the fastening end 342 is removed from the main body case front surface 50 ′, when the right end of the inspection door 200 is pulled forward, the inspection opening 104 is opened.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

According to the inspection door mounting structure of the ventilation system as described above, one end of the inspection door is rotatably mounted on the front surface of the main body case, and the door is opened and closed while the other end is rotated forward. And, such a check door is composed of one or two.

Therefore, since the inspection port is simply shielded by fixing or detaching one end of the inspection door, there is an advantage in that the labor required for attaching and detaching the inspection door is reduced.

Further, according to the present invention, since one side end of the inspection door is prevented from being lowered and exposed to the outside as in the prior art, the exchange of outside and internal air through the inspection opening is prevented.

That is, the present invention as described above has the effect of preventing the leakage of the internal air to the outside, preventing the reduction of heat exchange efficiency of the ventilation system in advance, and also prevents the introduction of external air into the room through the inspection opening, more comfortable It will also contribute to maintaining the indoor environment.

Claims (4)

One side of the main body case in which an inspection opening serving as an internal inspection and internal parts replacement window is formed; It is configured to include two swing-type inspection doors for selectively shielding the inspection opening formed on one side of the main body case, One end of the inspection door is mounted on the front of the main body case rotatably, the inspection door mounting structure of the ventilation system. 2. The inspection door mounting structure of claim 1, wherein the two inspection doors have one end portion protruding forward and a hook portion hanging on the fixing portion corresponding to each other. One side of the main body case in which an inspection opening serving as an internal inspection and internal parts replacement window is formed; A swing-type inspection door for selectively opening and closing the inspection opening formed on one side of the main body case by pushing or pulling; And a fastening means formed at one end of the check door to fix the check door to one side of the main body case. The method of claim 3, wherein the fastening means, A body having a spring built therein; A fastening lever installed to penetrate the body and having one end selectively protruding forward; An opening button to which the lower end of the fastening lever is selectively hooked and fixed; And a fastening plate guided by one end of the fastening lever and selectively hooked to one side of the main body case to one side of the main body case.