WO2014182080A1 - Ventilation unit using temperature and atmospheric pressure equilibrium and preservation system using same - Google Patents

Abstract

An atmospheric pressure equilibrium ventilation unit includes: a first frame assembly having a first frame for defining a first ventilation opening, a first rotational shaft installed in the first ventilation opening, and a first open/close plate provided on the first rotational shaft for opening or closing the first ventilation opening by rotating along with the first rotational shaft; a second frame assembly arranged adjacent to the first frame assembly having a second frame for defining a second ventilation opening, a second rotational shaft installed in the second ventilation opening, and a second open/close plate provided on the second rotational shaft for opening or closing the second ventilation opening by rotating along with the second rotational shaft, the second open/close plate being rotated by the difference between the atmospheric pressures respectively applied to both sides of the second open/close plate so as to open the second ventilation opening; a drive part having a static motor connected to the first rotational shaft so as to rotate the first rotational shaft forward or backward according to an opening or closing signal; a drive control part connected to both the first rotational shaft and the static motor for controlling the static motor by cutting off the opening or closing signal if the first rotational shaft rotates by a prescribed angle; and a locking control part cooperating with the first rotational shaft and the second rotational shaft for restraining the second rotational shaft so as to keep the second ventilation opening closed when the first rotational shaft rotates by a prescribed angle to open the first ventilation opening according the opening signal. Thus, the atmospheric pressure equilibrium ventilation unit is installed between two or more preservation chambers at different temperatures or between a freezing chamber and a cooling chamber (or between a heat-generation heating chamber and a heat-reception heating chamber), so that if a control region needs to be maintained at a higher or lower temperature, the air of a lower temperature region with a higher heat source part or of a higher temperature region with a lower heat source part is supplied to the place adjacent to the control region, and the positive pressure generated in the region receiving the air is returned to the region supplying the air to set off the negative pressure generated therein, thus maintaining the atmospheric pressure equilibrium so as to make the air ventilation smooth, controlling the temperature of the place adjacent to the control region. Also, if a person or an agricultural product exists in a preservation chamber or first chamber, and a gas harmful to the person or product is generated exceeding an allowable concentration in the chamber, and the gas detected is caused by a fire, the gas is discharged to the outside, and the fresh air from the outside is supplied to the inside of the chamber, or if the gas is not caused by a fire but a particular poisonous gas, the gas in the chamber is automatically discharged to the outside, and oxygen or a gas for neutralizing the particular poisonous gas is supplied to the inside of the chamber, thus lowering the concentration of the poisonous gas below a prescribed value.

Description

Ventilation unit using equilibrium of temperature and pressure and storage system using it

The present invention relates to a ventilation unit using a balance between temperature and air pressure and a storage system using the same, and more particularly to an air pressure for controlling a temperature in an adjacent place by using a heat source or a cold source generated in one heating device or a cooling device. A balanced ventilation unit and a storage system using the same.

The home refrigerator may control the temperature of the refrigerating compartment without using a separate evaporator in the refrigerating compartment with one evaporator of the freezing compartment. However, in a large industrial or commercial work WORK-IN COOLER or freezer, the size of the fan of the freezer evaporator and the dampers and ducts connecting the freezer and the freezer are increased, resulting in heat loss and damper. Due to freezing and an increase in the air pressure of the refrigerator and a decrease in the air pressure of the freezer generated when the air of the freezer is blown into the refrigerator, there is a problem that the air circulation is not made smoothly.

In addition, the heat loss of the freezer occurs due to the inflow of the freezer through the air pressure valve installed to solve the negative pressure caused by the temperature drop of the freezer, and the air in the refrigerator having high air pressure falls out through the air pressure valve installed in the refrigerator. Since the heat loss is caused by the exit, the material cost, labor cost, and power consumption are increased. When the capacity of the refrigerator is increased even though the cost and labor cost are increased, each refrigerator is installed or used in the refrigerator. Even though one condensing unit is used, each cooler is installed in a freezer and a refrigerator and a refrigerant pipe is connected to the freezer.

In addition, even in the case of several freezer compartments and freezer compartments, and several refrigerating compartments and refrigerating compartments, a refrigerator is provided for each chamber, or at least an indoor unit is installed and a refrigerant pipe is connected to the condensing unit.

It is an object of the present invention to provide an air pressure balanced ventilation unit capable of supplying air in a reservoir to an adjacent reservoir quickly and accurately and maintaining a pressure balance between the adjacent reservoirs.

Another object of the present invention is to provide a storage system using the above-described pressure equalization ventilation unit.

In addition, through the air pressure valve installed in the freezer in order to solve the negative pressure caused by the temperature drop of the freezer, heat loss occurs in the freezer due to the inflow of external air into the freezer, and the air in the refrigerator where the air pressure is increased is removed from the air pressure valve installed in the refrigerator. It is to solve the problem that heat loss is caused largely due to going out through the outside.

However, the problem to be solved of the present invention is not limited to the above-mentioned problem, and may be variously expanded within a range without departing from the spirit and scope of the present invention.

In order to achieve the object of the present invention, the pressure balanced ventilation unit according to the exemplary embodiments may include a first frame defining a first vent, a first rotating shaft installed at the first vent, and the first rotating shaft. A first frame assembly having a first opening / closing plate that rotates with the first rotation shaft to open and close the first ventilation opening, a second frame disposed adjacent to the first frame assembly and defining a second ventilation opening, the second And a second opening / closing plate provided in the ventilation opening and the second rotation shaft and rotating together with the second rotation shaft to open and close the second ventilation opening, and the second opening / closing plate is provided on both sides of the second opening / closing plate. A second frame assembly which is rotated by an air pressure difference applied to the second frame to open the second ventilation hole, and is connected to the first rotation shaft, and an open signal Or a driving unit having a forward and reverse motor for rotating the first rotation shaft in a forward or reverse direction according to a closing signal, respectively, connected to the first rotation shaft and the forward and reverse motor, and the opening signal is generated when the first rotation shaft rotates by a predetermined angle. Or a driving controller which controls the stationary motor by blocking the closing signal, and the first rotating shaft, wherein the first rotating shaft rotates by a predetermined angle according to the opening signal to open the first vent. And a locking control unit for restraining a second rotational shaft to maintain the second ventilation hole in a closed state.

In example embodiments, the first vent may include a lower first vent and an upper first vent disposed in a vertical direction, and the first rotary shaft may include a lower first rotary shaft installed in the lower first vent and the first vent. An upper first rotating shaft installed at an upper first ventilation hole, and the first opening / closing plate includes a lower first opening / closing plate provided at the lower first rotating shaft and an upper first opening / closing plate provided at the upper first rotating shaft. can do.

In example embodiments, the upper first rotation axis is connected to the first link, the lower first rotation axis is connected to the second link, and the first link and the second link are connected to each other by a connection link. Can be.

In example embodiments, the first link may be an input link connected to a drive shaft of the forward and reverse motor, and the second link may be an output link.

Alternatively, the second link may be an input link connected to a drive shaft of the forward and reverse motor, and the first link may be an output link.

In example embodiments, the locking control part may be formed at one or both ends of the second rotation shaft and have a balanced wing having a locking protrusion protruding in a horizontal direction, and connected to the connecting link, and the first rotation shaft may be connected to the first rotation shaft. It may include a fixed wing that rises when rotated by a predetermined angle in accordance with the open signal to contact the locking projection to restrain the balance blade.

In exemplary embodiments, at least two of the locking protrusions are spaced apart from each other in a horizontal direction, and when the first rotational axis rotates, the fixing vanes rise and tilt to contact the two locking protrusions. The flattened wings can be fixed in a horizontal state.

In example embodiments, the first frame may include a split frame that divides the lower first vent and the upper first vent.

In example embodiments, the split frame may become thinner gradually toward one end.

In example embodiments, the locking jaw is formed at the center of the inner surface of the first frame and the central portion of the split frame, and the first opening and closing plate is the locking jaw when the first rotation axis is rotated by a predetermined angle. Can be seated on

In example embodiments, protrusions may be formed at the center of the inner surface of the second frame and the center of the lower surface of the second frame, respectively, and the heater jaw is provided at the locking jaw and the protrusion, and the heater is provided at the heater insertion groove. To prevent freezing between the first and second frames and the first and second opening and closing plates.

In example embodiments, the driving controller is interlocked with the first rotational axis, and the first micro switch is configured to block the opening signal when the first rotational axis is rotated by a predetermined angle according to the opening signal. A second micro switch interlocked with a first rotation shaft and blocking the closing signal when the first rotation shaft is rotated by a predetermined angle according to the closing signal, and connected to the first and second micro switches, respectively; And a driving circuit having relays for stopping the forward and reverse motors when any one of the signal and the closing signal is blocked.

In an exemplary embodiment, the contact of the first micro switch is open when the first rotational axis rotates by 90 ° in the opening direction to block the opening signal, and the contact of the second micro switch is the first When the axis of rotation rotates by 90 ° in the closing direction, it may open to block the closing signal.

In example embodiments, after the first link is rotated by a predetermined angle in the opening direction with respect to the upper first rotation axis, the first link contacts the first micro switch to block the opening signal, and the second link May rotate the closing signal with respect to the second lower rotation shaft by a predetermined angle and then contact the second micro switch to block the closing signal.

In example embodiments, the second opening / closing plate is opened when an air pressure difference applied to both sides of the second opening / closing plate occurs, and is closed when the air pressure difference is removed, and the second opening plate is closed. The second rotary shaft is positioned at the uppermost end of the second vent, so that the center of gravity of the second opening / closing plate is lower than the second rotary shaft, so that the second vent can be closed by its own weight.

In an exemplary embodiment, the lower portion of the second opening and closing plate has a recessed area recessed in a concave shape to receive the air pressure, and in order to minimize frictional resistance with the lower horizontal frame when opening and closing the ventilation opening, the lower horizontal frame The bottom surface of the second opening and closing plate in contact with the can be formed into a curved surface.

In example embodiments, when the second opening / closing plate is opened by the pressure difference applied to both front and rear sides of the second opening / closing plate, and the air pressure difference is resolved on both front and rear sides of the second opening / closing plate, the second The second opening and closing plate may be returned to the closed position by a restoring force provided by a return spring provided at one end of the rotating shaft.

In example embodiments, when the second opening / closing plate is opened by the pressure difference applied to both front and rear sides of the second opening / closing plate, and the air pressure difference is resolved on both front and rear sides of the second opening / closing plate, the second When the second opening and closing plate closes to the closed position by a restoring force provided by a return spring provided at one end of the rotating shaft, the first magnet part provided at the lower end of the second opening and closing plate and correspondingly provided in the second frame. The airtightness of the said 2nd opening-and-closing plate can be improved by the magnetic force between the said 2nd magnet part.

In example embodiments, the balanced pressure ventilation unit may further include a temperature controller configured to supply the open signal and the closed signal to the forward and reverse motors according to a temperature of a reservoir in which the balanced pressure ventilation unit is installed.

In example embodiments, the pressure equalization ventilation unit may be disposed on one side of the first frame and further include a ventilation fan for discharging or supplying air through the first ventilation hole.

In example embodiments, the ventilation fan may operate when the open signal is supplied and stop operation when the close signal is supplied.

In order to achieve the object of the present invention, a storage system according to exemplary embodiments includes a first reservoir having a heat source and a cold source, a second reservoir adjacent to the first reservoir with a wall interposed therebetween, and installed on the wall. A first pressure equalization ventilation unit for supplying air in the first reservoir to the second reservoir, and the first pressure equalization ventilation unit is installed on the same wall is installed, the first reservoir for supplying air in the second reservoir to the first reservoir Includes 2 barometric pressure ventilation units.

At least one of the first and second pressure equalizing ventilation units may include a first frame defining a first ventilation opening, a first rotation shaft installed in the first ventilation opening, and the first rotation shaft and together with the first rotation shaft. A first frame assembly having a first opening and closing plate that rotates to open and close the first ventilation opening,

A second frame disposed adjacent to the first frame assembly and defining a second ventilation opening, a second rotating shaft installed in the second ventilation opening, and the second rotating shaft and rotating together with the second rotating shaft to form the second ventilation opening; It has a second opening and closing plate for opening and closing the ventilation opening, the second opening and closing plate is a pressure balance assembly that can rotate by opening the pressure difference applied to both sides of the second opening and closing plate to open the second ventilation opening,

A drive unit connected to the first rotation shaft and having a forward and reverse motor for rotating the first rotation shaft in a forward or reverse direction according to an open signal or a close signal; and

A driving controller connected to the first rotation shaft and the forward / reverse motor, respectively, and controlling the forward / reverse motor by blocking the opening signal or the closing signal when the first rotation shaft rotates by a predetermined angle; and the first rotation shaft and the Locked to interlock with a second rotary shaft, respectively, to constrain the second rotary shaft to maintain the second vent in a closed state when the first rotary shaft rotates by a predetermined angle according to the opening signal to open the first vent. It may include a control unit.

In exemplary embodiments, the first reservoir is a cold reservoir having a relatively low temperature with a low heat source, and the second reservoir is a relatively temperature for controlling temperature by receiving cold air from the first reservoir. High water cooling unit

) A low temperature reservoir, and the heat source of the first reservoir may include a freezer.

In exemplary embodiments, the first reservoir is a heat source compartment, the second reservoir is a heat compartment compartment, and the heat source of the first reservoir may include a heater and a heat pump. Can be.

In example embodiments, the storage system may further include a temperature controller configured to supply the open signal and the closed signal to the forward and reverse motor according to a temperature inside the first and second reservoirs.

In example embodiments, at least one of the first and second barometric pressure ventilation units may be disposed at one side of the first frame and may include a ventilation fan for discharging or supplying air through the first vent. It may further include.

In example embodiments, the ventilation fan may operate when the open signal is supplied and stop operation when the close signal is supplied.

In example embodiments, the second frame of the barometric pressure ventilation unit may be a barometric pressure assembly.

In example embodiments, the storage system may further include an external air pressure valve installed in at least one of the first and second reservoirs to balance pressure inside and outside the first and second reservoirs. Can be.

In example embodiments, the storage system may further include an external air pressure valve for balancing pressure inside and outside of the first and second reservoirs in a second reservoir to which cold air and heat are supplied from the first and second reservoirs. It may include.

The pressure balanced ventilation unit according to the present invention configured as described above is installed between two or more stores having different temperatures, and between a freezer and a refrigerator (or between a heat source warmer and a heat storage compartment), so that a low heat source is required to maintain the temperature low. Positive air pressure generated at the place receiving air at the place where the temperature is low, and sending the air at the high temperature with the high heat source part to the adjacent place to control the temperature, if you want to keep the temperature high. By returning back to the sender to compensate for the negative pressure of the sender to achieve a balance of air pressure and smooth air circulation, it is possible to control the temperature of the adjacent neighbor.

To this end, a dedicated ventilation unit is adopted to block heat transfer and leakage of air with a non-metal material with a low heat transfer rate, and a dedicated heater is installed in the ventilation assembly frame body in which the damper plate rotates to prevent the damper from freezing. In order to perform strong force and precise opening and closing during operation, the geared motor is used as the opening and closing power source to operate the exclusive driving circuit.The first reservoir is the difference between the air pressure generated during opening and closing of the door and air circulation. The difference in the internal pressure between the and the second reservoir is a pressure balance assembly, and the difference in pressure between the reservoir and the outside can be solved by an external pressure valve.

In addition, the water cooling unit that receives cold or hot air (

By installing an external air pressure valve in the second reservoir of the heat sink and the heat receiving portion, the first and second reservoirs balance the pressure with the outside air through the second reservoir having a small temperature difference from the outside air. Compared to the case where the air having a large temperature difference balances the pressure with the outside air through the first reservoir, it is possible to prevent a sudden change in temperature and thereby prevent a sudden heat shock to the storage and save energy.

On the other hand, when the heat source is installed in both the first reservoir and the second reservoir, when the storage is contained in the failure place when either one of the first reservoir and the second reservoir failed, the reservoir becomes a sudden change in temperature. It can be deteriorated and is often chased by time to repair it.

At this time, if the pressure equalizing ventilation unit according to the present invention is installed, it is possible to cover the required cold air or the heat source of the failed side as one heat source that has not failed.

In the case of the storage of temperature control, the facility is constructed in consideration of the maximum load, so that the time required for repair in case of failure can be obtained, and thus it can function as a spare facility in case of emergency.

1 is a block diagram illustrating a storage system according to example embodiments.

2 is a perspective view of the ventilation assembly of the barometric pressure ventilation unit according to exemplary embodiments when closed.

3 is a front view of FIG. 2.

4 is a right side view of FIG. 2.

5 is a left side view of FIG. 2.

FIG. 6 is a perspective view when opening the ventilation assembly of the barometric pressure ventilation unit of FIG. 2. FIG.

7 is a front view of FIG. 6.

8 is a right side view of FIG. 6.

9 is a perspective view of the opening of the pressure balancing assembly of the pressure balancing ventilation unit of FIG. 2.

10 is a right side view of FIG. 9.

FIG. 11 is a perspective view of the opening of the pressure balancing assembly of the pressure balancing ventilation unit of FIG. 2. FIG.

12 is a right side view of FIG. 11.

It is sectional drawing which shows the 2nd opening and closing plate of a closed state.

It is sectional drawing which shows the 2nd opening and closing plate of an open state.

Fig. 15 is an exploded perspective view showing an atmospheric pressure ventilation unit according to exemplary embodiments.

FIG. 16 is a side view illustrating the pressure balance ventilation unit of FIG. 15.

FIG. 17 is a circuit diagram employing the barometric pressure ventilation unit in the storage system of FIG. 1.

18 is a side view showing a balanced vane connected to a single return spring.

19 and 20 are perspective views illustrating a first frame of a ventilation assembly having various structures.

21 is a block diagram illustrating a storage system according to example embodiments.

FIG. 22 is a circuit diagram illustrating an automatic exhaust system in the storage system of FIG. 21.

With respect to the embodiments of the present invention disclosed in the text, specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments of the present invention, embodiments of the present invention may be implemented in various forms and It should not be construed as limited to the embodiments described in.

As the inventive concept allows for various changes and numerous modifications, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "neighboring to," and "directly neighboring to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. .

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same elements in the drawings, and duplicate descriptions of the same elements are omitted.

1 is a block diagram illustrating a storage system according to example embodiments.

Referring to FIG. 1, the storage system 10 includes first and second pressure balances installed between the first reservoir 12, the second reservoir 14, and the first and second reservoirs 12 and 14. It may comprise ventilation units 100A, 100B.

In example embodiments, the storage system 10 may include at least two first and second reservoirs 12, 14 having different temperature ranges and adjacent to each other. The first reservoir 12 and the second reservoir 14 may be disposed adjacent to each other with the intermediate wall 16 therebetween. The temperature ranges of the first and second reservoirs 12, 14 may be set according to the storage stored in each reservoir.

For example, the first reservoir 12 may be a cold reservoir, such as a freezer, having a low temperature heat source 30 such as a chiller, and the second reservoir 14 may be supplied with cold air from the first reservoir. 1 Can be a cold store, such as a refrigerator, that is hotter than the store. Alternatively, the first reservoir 12 may be a heat source warmer having a high temperature heat source, such as a heater, and the second reservoir 14 may be a heat store warmer having a lower temperature range than the heat source warmer.

The first pressure balanced ventilation unit 100A and the second pressure balanced ventilation unit 100B may be installed at the same intermediate wall 16 at a distance from each other. The first and second barometric pressure ventilation units 100A and 100B form a pair to supply the air in the first reservoir 12 to the second reservoir 14 and to remove the air in the second reservoir 14. 1 can be supplied to storage 12.

Locations of the first and second barometric pressure ventilation units 100A and 100B may be selected in consideration of the size and temperature range of the first and second reservoirs 12 and 14.

The first barometric pressure ventilation unit 100A may selectively supply air in the first reservoir 12 to the second reservoir 14. The second barometric pressure ventilation unit 100B may selectively supply air in the second reservoir 14 to the first reservoir 12. The first and second barometric pressure ventilation units 100A and 100B can be operated simultaneously with each other. For example, when the first barometric pressure ventilation unit 100A operates to supply air in the first cellar 12 to the second cellar storage 14, the second barometric pressure ventilation unit 100B operates simultaneously with the first barometric pressure ventilating unit 100A. The air in the second reservoir 14 can be supplied to the first reservoir 12. In addition, when the air supply operation of the first air pressure balance ventilation unit 100A is stopped, the air supply operation of the second air pressure balance ventilation unit 100B may also be stopped.

As will be described below, at least one of the first and second pressure balanced ventilation units 100A, 100B is configured to provide a pressure balance between the reservoir and a ventilation assembly that can be selectively opened to supply air in the reservoir to another reservoir. It may include a pressure balance assembly for.

The ventilation assembly opens and closes the first ventilation opening provided between the first and second reservoirs 12 and 14 according to a control signal such as an opening signal and a closing signal, and supplies air in a state in which the first ventilation opening is opened. Can be performed. The pressure balance assembly may be provided adjacent to the ventilation assembly and open by the pressure difference between the first and second reservoirs 12 and 14 to solve the pressure difference. In addition, the air pressure balance assembly may maintain the second air vent in a closed state while the first air vent is opened to block the flow of air through the air pressure balance assembly.

In example embodiments, the storage system 10 may further include a sensor unit (not shown). The sensor unit may include a gas sensor, a pressure sensor, a humidity sensor, a temperature sensor, and the like installed in the first reservoir 12 and the second reservoir 14. The sensor unit may be connected to a control unit (not shown), and the control unit may control the operation of the storage system 10 according to the temperature and humidity inside the reservoir detected by the sensor unit, the concentration of the gas, and the like. For example, the control unit includes temperature controllers 50A and 50B, which control the first and second barometric pressure venting units according to the temperature inside the first and second reservoirs 12 and 14. It is possible to generate and supply control signals for controlling supply operations of 100A and 100B.

In addition, the storage system 10 may be installed in at least one of the first and second reservoirs 12 and 14 to balance the pressure between the interior of the first and second reservoirs 12 and 14 and the outside of the reservoir. It may further include an external pressure valve 40. For example, the external air pressure valve 40 installed on one sidewall of the second reservoir 14 may be opened when there is a difference in air pressure between the second reservoir 14 and the outside of the reservoir, thereby relieving the pressure difference.

Hereinafter, the barometric pressure ventilation unit included in the storage system of FIG. 1 will be described in detail.

For clarity of understanding, the first barometric pressure ventilation unit 100A and the second barometric pressure ventilation unit 100B of FIG. 1 may include components that are substantially the same in opposite directions to each other and substantially the same or similar components. . For example, when the first cellar is a freezer and the second cellar is a refrigerator, the first and second barometric pressure ventilation units 100A and 100B may freeze the first and second opening and closing plates and the ventilation fan. In order to prevent this, the ventilation fan may be arranged on the second reservoir 100B side. When the first reservoir is a heat source warmer and the second reservoir is a heat receiver warmer, in order to prevent overheating of the ventilation fan, the first and second barometric pressure ventilating units 100A and 100B are arranged in a second reservoir. A ventilation fan can be arranged on the side of 100B.

Accordingly, the first and second barometric pressure ventilation units 100A and 100B are denoted by the reference numeral 100, and will be collectively described below as a barometric pressure ventilation unit.

2 is a perspective view of the ventilation assembly of the barometric pressure ventilation unit according to exemplary embodiments when closed. 3 is a front view of FIG. 2. 4 is a right side view of FIG. 2. 5 is a left side view of FIG. 2. FIG. 6 is a perspective view when opening the ventilation assembly of the barometric pressure ventilation unit of FIG. 2. FIG. 7 is a front view of FIG. 6. 8 is a right side view of FIG. 6. 9 is a perspective view of the opening of the pressure balancing assembly of the pressure balancing ventilation unit of FIG. 2. 10 is a right side view of FIG. 9. FIG. 11 is a perspective view of the opening of the pressure balancing assembly of the pressure balancing ventilation unit of FIG. 2. FIG. 12 is a right side view of FIG. 11. FIG. 13 is a cross-sectional view showing the second open / close plate in a closed state, and FIG. 14 is a cross-sectional view showing the second open / close plate in an open state. Fig. 15 is an exploded perspective view showing an atmospheric pressure ventilation unit according to exemplary embodiments. FIG. 16 is a side view illustrating the pressure balance ventilation unit of FIG. 15. FIG. 17 is a circuit diagram employing the barometric pressure ventilation unit in the storage system of FIG. 1.

2 to 17, in exemplary embodiments, the barometric pressure ventilation unit 100 may include a ventilation assembly, a pressure balance assembly, and a ventilation fan unit 200. The ventilation fan unit 200 may be installed at one side of the ventilation assembly. The ventilation fan unit 200 may include a ventilation fan 202 for discharging and supplying air in the reservoir to another reservoir through the ventilation assembly 110.

The ventilation assembly is installed in the wall 16 between the first and second reservoirs 12, 14 and has a first frame assembly with first vents 116a, 116b, control signals such as open and closed signals. The driving unit 140 may open and close the first vent holes 116a and 116b and a driving control unit controlling the driving unit 140. The ventilation assembly may operate the ventilation fan 202 while the first ventilation holes 116a and 116b are open to discharge or supply air through the first ventilation holes 116a and 116b.

The pressure balancing assembly is installed in the wall 16 adjacent to the first frame assembly of the ventilation assembly and has a second ventilation opening 126 and the second ventilation opening 126 is formed of the first and second reservoirs 12, 14) a second frame assembly which is opened by the air pressure difference therebetween and can eliminate the air pressure difference therebetween, and a second air vent 126 in a state in which the first air vents 116a and 116b are opened in connection with the air vent assembly. ) May include a lock control unit to maintain the closed state so as not to open.

In the exemplary embodiments, the barometric pressure ventilation unit 100 is divided into two-layered type and stacked type according to the size and expandability of the reservoir, and the operation principle thereof is the same or similar, and first, the double-type type will be described.

2 to 11, the first frame assembly is installed on a wall between the first and second reservoirs adjacent to each other, and the first frame 110 and the first frame defining the first vent holes 116a and 116b. The first rotary shafts 114a and 114b installed in the ventilation holes 116a and 116b and the first rotary shafts 114a and 114b are rotated together with the first rotary shafts 114a and 114b to rotate the first ventilation holes 116a and 116b. It may include a first opening and closing plate (117a, 117b) for opening and closing the.

The first frame 110 may have first vertical frames 111a and 111b and first horizontal frames 112a and 112b for defining at least one open first ventilation opening 116a and 116b. For example, the first frame 110 may include an upper first vent 116a and a lower first vent 116b disposed in the vertical direction. The first frame 110 may include a split frame 113 which defines an upper first vent 116a and a lower first vent 116b. The upper first vent 116a and the lower first vent 116b divided by the dividing frame 113 may be disposed in parallel to each other in a vertical direction to provide a multi-layered vent assembly. Alternatively, as described below, a stacked ventilation assembly (see FIGS. 19 to 20) may be provided in which a plurality of first frames 110 are stacked in the vertical and horizontal directions.

The upper first vent 116a may have the same shape as the lower first vent 116b. For example, the upper and lower first ventilation holes 116a and 116b may have a rectangular cross-sectional shape. The first vent may have a rectangular cross-sectional shape, the width of which is greater than the height. Therefore, the first frame 110 having a rectangular window has at least two first ventilation holes 116a and 116b separated by at least one split frame 113 that crosses the center of the first frame 110. Can be.

In addition, two or more split frames may be provided. In this case, three or more first ventilation holes may be provided according to the number of the divided frames. Alternatively, as described below, only one first vent may be provided in the first frame 110. In this case, the plurality of first vents can be combined left and right or up and down to provide a stacked ventilation assembly (see FIGS. 19-20) having a plurality of first vents.

Upper and lower first rotation shafts 114a and 114b may be installed in the upper and lower first ventilation holes 116a and 116b, respectively. The upper first rotating shaft 114a may be installed to cross the upper first ventilation opening 116a, and at least one end of the upper first rotating shaft 114a may protrude from the first frame 110 to the outside. The lower first rotating shaft 114b may be disposed across the lower first ventilation hole 116b, and at least one end of the lower first rotating shaft 114b may protrude to the outside of the first frame 110.

Upper and lower first opening and closing plates 117a and 117b may be coupled to the upper and lower first rotation shafts 114a and 114b, respectively. The upper first opening / closing plate 117a may have a receiving hole into which the upper first rotation shaft 114a is inserted and fixed. The lower first opening / closing plate 117b may have a receiving hole into which the lower first rotation shaft 114b is inserted and fixed. Accordingly, the upper and lower first rotation shafts 114a and 114b may be inserted into and fixed to the accommodation holes of the upper and lower first opening and closing plates 117a and 117b, respectively.

The upper first opening / closing plate 117a may be installed on the upper first rotation shaft 114a to open and close the upper first ventilation opening 116a by bidirectional rotation of the upper first rotation shaft 114a. The lower first opening / closing plate 117b may be installed on the lower first rotation shaft 114b to open and close the lower first ventilation opening 116b by bidirectional rotation of the lower first rotation shaft 114b.

Alternatively, the first opening and closing plate is fitted to the slit formed on the first rotation shaft along the longitudinal direction of the first rotation shaft and coupled to the first rotation shaft by the coupling of the bolt and nut and the tab provided on the bolt and the rotation shaft. Can be. The first opening and closing plate may be integrally formed with the first rotation shaft.

In example embodiments, first and second locking projections 118a, 118b, 119a, and 119b may be formed on the inner surfaces of the first frame 110 and the split frame 113, respectively.

Specifically, the first locking jaw 118a is formed to protrude from the inner surface of the first vertical frames 111a and 111b and the lower surface of the first horizontal frame 112a, and the second locking jaw 119a is the first vertical The first opening / closing plate is formed to protrude from the inner surfaces of the frames 111a and 111b and the upper surface of the split frame 113 so that the first opening / closing plate 117a is in a position to completely close the first ventilation opening 116a. End portions 117a come into contact with the first and second locking jaws 118a and 119a, respectively.

In addition, the first locking step 118b protrudes from the inner surface of the first vertical frames 111a and 111b and the lower surface of the split frame 113, and the second locking step 119b is the first vertical frame 111a. Protruding to the inner surface of the 111b and the upper surface of the first horizontal frame 112b, when the first opening and closing plate 117b is in a position to completely close the first ventilation opening 116b, The ends of 117b are in contact with the first and second locking jaws 119a and 119b. Therefore, the airtightness of the 1st opening / closing plate 117a and 117b and the 1st ventilation openings 116a and 116b can be improved.

In addition, heater insertion grooves 218a, 218b, 219a, and 219b are respectively provided in the first and second locking jaws 118a, 118b, 119a, and 119b, and a heater is inserted into the heater insertion grooves. It is possible to prevent the first opening and closing plates 117a and 117b from being frozen and restrained on the first frame 110 at a low temperature.

As shown in FIG. 15 and FIG. 16, the driving unit 140 is provided on the side of the first frame 110 and may include a forward and reverse motor 142 for rotating the first rotation shaft in the forward or reverse direction. have. The forward and reverse motor 142 may be installed on the side of the first frame 110 by the motor bracket 143.

The driver 140 may further include a reducer 144 connected to the drive shaft of the forward and reverse motor 142. The reducer 144 may include a gear train connected to the drive shaft of the stationary motor 142, and stably maintain the operation of the first rotation shaft and the first opening / closing plate. Therefore, the forward and reverse motor 142 of the driving unit 140 may serve as a geared motor that performs a low speed rotation and obtains a large torque.

The drive shaft of the forward and reverse motor 142 may be connected to any one of the upper and lower first rotation shafts 114a and 114b. In detail, the driving shaft of the forward and reverse motor 142 may be directly connected to one end of the upper first rotating shaft 114a through the coupling 145 to rotate the upper first rotating shaft 114a in the forward or reverse direction.

The upper first rotary shaft 114a is connected to the first link 150, the lower first rotary shaft 114b is connected to the second link 152, and the first link 150 and the second link 152 are connected to each other. The connection links 154 may be connected to each other. Therefore, the upper first rotary shaft 114a and the lower first rotary shaft 114b may form a four-section link together with the links. In this case, the length of the first link 150 may be equal to the length of the second link 152. When the drive shaft of the forward and reverse motor 142 is directly connected to the upper first rotary shaft 114a protruding from the first frame 111, the first link 150 is an input link and the second link 152 may be an output link. have. Alternatively, the second link 152 may be an input link and the first link 150 may be an output link. Accordingly, when the upper first rotation shaft 114a is rotated by the stationary motor 142, the lower first rotation shaft 114b may rotate in the same direction as the rotation direction of the upper first rotation shaft 114a.

In example embodiments, the upper first rotation shaft and the lower first rotation shaft may be connected to each other through a connecting means such as a plurality of gear trains, a cam mechanism, a timing belt, and the like. The drive shaft of the stationary motor may be connected to the upper first rotation shaft by a sleeve, a coupling, a reducer gear, and various joint connections to rotate the upper first rotation shaft in a forward or reverse direction.

In addition, a power source such as a forward / reverse motor or a solenoid may be connected to the upper first rotation shaft and the lower first rotation shaft, respectively, and they may be simultaneously opened and closed by a batch signal.

Alternatively, only a part of the opening / closing plate can be operated according to an individual signal, and the opening / closing plate at the opening rate and opening time is controlled through proportional control rather than on / off detection and control of the circuit for detecting and controlling the opening degree of the opening / closing plate. By adjusting the angle of, the amount and direction of the air supply and intake air can be adjusted.

The forward and reverse motor 142 is connected to and controlled by the temperature controller 50, and may rotate in a forward or reverse direction according to a control signal such as an open signal or a closed signal of the temperature controller.

2 to 12, when the forward and reverse motor 142 rotates in the forward direction according to the opening signal, the upper and lower first rotating shafts 114a and 114b rotate in the opening direction to allow the upper first ventilation holes to rotate. 116a and 116b can be opened. When the forward and reverse motor 142 rotates in the reverse direction according to the closing signal, the upper and lower first rotating shafts 114a and 114b rotate in the closing direction to open the upper and lower first and second ventilation holes 116a and 116b. Can be closed.

In example embodiments, the driving controller is connected to the first rotary shafts 114a and 114b and the forward and reverse motors 142, respectively, and when the first rotary shafts 114a and 114b rotate by a predetermined angle, the open signal or The stationary motor 142 may be controlled by blocking the closing signal. The driving control unit may include a first micro switch 160, a second micro switch 162, and a driving circuit.

The first and second micro switches 160 and 162 are interlocked with the upper and lower first rotational axes 114a and 114b so that the mechanical movement of the upper and lower first rotational axes 114a and 114b (eg, Electrical signal flow according to the rotational motion of the rotating shaft).

Specifically, the first micro switch 160 may be interlocked with the upper first rotation shaft 114a and block the opening signal when the upper first rotation shaft 114a is rotated by a predetermined angle according to the opening signal. The second micro switch 162 may be interlocked with the lower first rotation shaft 114b and block the closing signal when the lower first rotation shaft 114b is rotated by a predetermined angle according to the closing signal.

The first micro switch and the second micro switch may be proximity sensors or other sensors that recognize other operations. The first micro switch and the second micro switch may be configured to simultaneously install the micro switch and the proximity sensor to improve circuit safety.

As shown in FIGS. 4 and 8, the first link 150 rotates together with the upper first rotating shaft 114a by a predetermined angle (eg, 90 °) according to the opening signal, and then the first link 150. The other end of the link 150 may contact the first micro switch 160.

Accordingly, the contact of the first micro switch 160 may be opened to block the flow of the open signal to the forward and reverse motor 142.

After the second link 152 is rotated by a predetermined angle (for example, 90 °) together with the lower first rotational axis 114b according to the closing signal, the other end of the second link 152 is second micro. May be in contact with the switch 162. Accordingly, the contact of the second micro switch 162 may be opened to block the flow of the closed signal to the forward and reverse motor 142.

Accordingly, the contact point of the first micro switch 160 is opened when the first rotation shafts 114a and 114b rotate by 90 ° in the opening direction to block the open signal, and the contact point of the second micro switch 162 When the rotation shafts 114a and 114b rotate by 90 ° in the closing direction, they may be opened to block the closing signal.

As shown in FIGS. 1 and 17, the temperature controller 50 provides the open signal to the stationary motor 142 according to the temperature measured by the temperature sensors 50a, 50b installed inside the first and second reservoirs. And the closing signal. The driving circuit connects the temperature controller 50 and the stationary motor 142 to each other, and is connected to the first and second micro switches 160 and 162, respectively, and when any one of the open signal and the closed signal is blocked. It may have relays to stop the forward and reverse motor 142.

In exemplary embodiments, when the temperature inside the second reservoir is outside the set temperature range, the contact T / C of the temperature controller 50 is closed and the B contact DTb2 of the defrost timer of the first reservoir controller is closed. Power may be simultaneously supplied to the ventilation fan and the relay AX1.

When supplying cold air to the second reservoir when the freezer of the first reservoir is defrosting, there is a fear that the temperature inside the first reservoir may be increased, so that cold air is not supplied to the second reservoir at the defrost time. After defrosting is completed, cold air is supplied to the second reservoir.

In addition, the DC power supply 12V may be supplied to the DC relay DAX1 through the A contact point A1 of the relay AX1 via the B contact point of the first micro switch S / W1 through the SMPS which is the DC power supply device.

When the ventilation opening relay DAX1 is energized, DC 12V power is applied to the ventilation forward / reverse motor (M / A) through DAX1-1a and DAX1-2a, which are contacts A of the ventilation opening relay DAX1, and the first opening / closing plate of the ventilation unit ( The first link 150 is operated in the direction in which the 117 is opened, and the second link 150 and the fixed vane 157 linked thereto may be lifted up.

The fixed wing 157 can restrain the balanced blade 130 provided on the rotation shaft of the second opening and closing plate 125 in a horizontal state while being raised, and when the second opening and closing plate 125 rotates at an angle of 90 °, The protruding head of the bolt connecting the first link 150 and the fixed vane 157 is in contact with the lever of the first micro switch 160, so that the contact point of the first micro switch 160 is opened and supplied to DAX1. Power can be cut off.

The power supplied to the forward / reverse motor (M / A) of the ventilation unit is cut off, and the forward / reverse motor 142 is stopped while the first opening / closing plate 117 is rotated at an angle of 90 °, and the ventilation fan 202 is stopped. In the state in which the first vent 116 is open, the first and second reservoirs are ventilated, respectively, and operated until the set temperature of the temperature controller T / C of the second reservoir is reached.

When the temperature inside the second reservoir reaches the set temperature range, the contact point of the T / C of the temperature controller 50 is opened to cut off the power supplied to the ventilation fan and the relay AX1 so that the ventilation fan may stop. have.

Accordingly, the AX1-2b, which is the b contact of AX1, is closed, and the forward and reverse motor DAX2 rotates in the reverse direction through the b contact of the first micro switch and the AX1-2b contact, thereby rotating the upper first rotating shaft 114a in the closing direction, The second link 152 linked to the first link 150 also rotates in the closing direction, so that the lower first rotating shaft 114b also rotates in the closing direction, so that the upper and lower first ventilation holes 116a and 116b are closed. Can be.

When the upper first rotation shaft 114a rotates in the closing direction by a predetermined angle (for example, 90 °), the second link 152 also rotates together, and then the other end of the second link 152 is second It may be in contact with the micro switch 162. Accordingly, the contact of the second micro-switch 162 is opened to cut off the power supply of the relay DAX2 so that both of the contacts of DAX2-1a and DAX2-2a are opened, and the flow of the closed signal to the forward and reverse motor 142 The reverse rotation of the forward and reverse motor 142 may be stopped by blocking. In this case, the lower and upper first ventilation holes 116a and 116b may be completely closed.

The reason why power is supplied to the ventilation fan and the relay AX1 via DTb2, which is the defrost timer B contact of the first reservoir controller, is to supply cold air to the second reservoir when the refrigerator of the first reservoir is in defrost. This is to supply cold air to the second reservoir after defrosting is completed, without supplying cold air to the second reservoir during the defrosting time of the first reservoir because the temperature inside the first reservoir may be rather increased.

As described above, the drive control unit may further connect a proximity sensor in series with the micro switch to complement the operation of the first and second micro switches and to protect the stationary motor 142. Therefore, even if the micro switch does not operate, the proximity sensor can safely protect the forward and reverse motor 142 by cutting off the power supplied to the forward and reverse motor 142.

The reason why the secondary electricity controlled here is composed of D / C is to reduce the safety and the size of the drive motor.

As shown in FIGS. 2 to 14, the barometric pressure ventilation unit is installed on a wall between the first and second reservoirs adjacent to each other, and includes a second frame 120 and a second defining a second vent 126. The second opening and closing plate 125 provided on the second rotation shaft 124 and the second rotation shaft 124 installed in the ventilation opening 126 and rotating together with the second rotation shaft 124 to open and close the second ventilation opening 126. It may include.

The second frame 120 may be disposed above the first frame 110. For example, the second frame 120 may be stacked on the first frame 110. Alternatively, the second frame 120 may be integrally formed with the first frame 110. The second frame 120 may have second vertical frames 121a and 121b and a second horizontal frame 122a for defining at least one open second ventilation opening 126. Therefore, the second vent 126 may be formed by the second vertical frames 121a and 121b, the second horizontal frame 122a, and the first horizontal frame 112a. The second vent 126 may have a rectangular cross-sectional shape. The second vent may have a rectangular cross-sectional shape, the width of which is greater than the height. The width and height of the second vent 126 may be smaller than the width and height of the first vent 116a and 116b.

A second rotation shaft 124 may be installed in the second vent 126. The second rotation shaft 124 may be installed across the second ventilation hole 126, and both ends of the second rotation shaft 124 may protrude to the outside through the through holes of the second frame 120. The second opening and closing plate 125 may be coupled to the second rotation shaft 124 in the second ventilation hole 126. The second opening and closing plate 125 may be installed on the second rotation shaft 124 and may be coupled to the second rotation shaft 124 to be bidirectionally rotated with respect to the second rotation shaft 124. The second opening / closing plate 125 may rotate in both directions with respect to the second rotation shaft 124 to open and close the second ventilation holes 126.

For example, the second opening and closing plate 125 may have a receiving hole into which the second rotating shaft 124 is inserted and fixed. Accordingly, the second rotation shaft 124 may be inserted into and fixed to the accommodation holes of the second opening and closing plate 125, respectively. In addition, the second rotation shaft 124 may be disposed to cross the uppermost portion of the second ventilation opening 125, and the second opening / closing plate 125 may be provided to extend only in one direction from the second rotation shaft 124. The second opening / closing plate 125 may be inserted into the receiving hole of the second rotating shaft 124 crossing the uppermost portion of the second frame 120 and may be coupled to the second rotating shaft 124 by fixing means such as bolts. have. Alternatively, the second opening and closing plate may be integrally formed with the second rotation shaft.

In addition, the second rotating shaft 124 may serve as an air pressure valve that employs an oilless bearing in a portion penetrating the second frame 120 to smoothly rotate by the differential pressure of air.

In example embodiments, both ends of the second rotation shaft 124 protruding from the second frame 120 are provided with balance blades 130, and both ends of the balance blade 130 have first and second return springs. The fields 132a and 132b may be connected. One ends of the first and second return springs 132a and 132b may be fixed to the outside of the second frame 120. The first and second return springs 132a and 132b may be connected to the left and right ends of the balance blade 130 in a V-shape.

When the difference in pressure applied to the front and rear of the second opening and closing plate is greater than the elastic force of the first and second return springs 132a and 132b, the second rotation shaft 124 together with the second opening and closing plate 125 in one direction The second vent 126 may be opened by rotating. At this time, when the balance blade 130 rotates, when the first return spring 132a receives a tension force, the second return spring 132b receives a compression force, and conversely, when the first return spring 132a receives a compression force, the second return spring 132a receives a compression force. Return spring 132b may be tensioned.

When the pressure difference applied to the front and rear of the second opening / closing plate is resolved, the balance blade 130 is returned to the horizontal state by the restoring force of the first and second return springs 132a and 132b. The second opening / closing plate 125 may return to its original position to close the second vent 126.

First and second protrusions 123 and 128 may be formed on the inner surface of the second frame 120, respectively. When the second opening and closing plate 125 is in a vertical position (closed position), both side portions of the second opening and closing plate 125 are positioned to be close to the first protrusion 123, and a lower end of the second opening and closing plate 125 is formed. 2 may be positioned close to the protrusion 128 to maintain the airtightness at the second vent 126.

Unlike the first locking projections 118a and 118b of the first frame 110, the first protrusion 123 of the second frame 120 has the opening / closing operation of the second opening / closing plate 125 due to the difference in air pressure. When performing, the second opening / closing plate 125 protrudes from both sides (inner surfaces of the second vertical frames 121a and 121b) of the second frame 120 so that both sides pass through the first protrusion 123. Can be formed.

As shown in FIGS. 13 and 14, the second protrusion 128 of the second frame 120 is different from the second latching jaws 119a and 119b of the first frame 110. It may be formed to protrude from the lower surface (top surface of the first horizontal frame 112a) of the second frame 120 so that the lower end of the 125 passes through the second protrusion 128. Therefore, the airtightness of the 2nd opening-and-closing plate 125 and the 2nd ventilation openings 116a and 116b can be improved, without restricting the opening and closing operation | movement of the 2nd opening-and-closing plate 125. FIG.

In addition, the first protrusion 123 is provided with a heater insertion groove, the heater (H) is inserted into the heater insertion groove and the second protrusion 123, the second opening and closing plate 125 is a low temperature in the second frame ( 120 may be prevented from being frozen. The heater H may be sealed and fixed by a sealing member S, such as an epoxy molding compound.

In addition, the second opening and closing plate 125 may further include a half moon-shaped load part 125b provided at the lower end of the second opening and closing plate 125 to increase the restoring force to the vertical position by the center of gravity. . In addition, the load portion 125b of the second opening / closing plate 125 has a first magnet portion M1, and the lower protrusion 128 has a second magnet portion M2 corresponding to the first magnet portion M1. Can have.

Thus, when the second opening / closing plate 125 is opened and closed again, the restoring force of the first and second return springs 132a and 132b connected to the balance vane 130, and the first and second magnet parts M1 and M2. By the magnetic force of, the airtightness can be improved at the time of closing of the 2nd ventilation opening 126.

The pressure balancing assembly may be interlocked to be closed when the ventilation assembly is opened, and the second ventilation port 126 may be maintained in the closed state without opening the first ventilation holes 116a and 116b. In detail, the locking control unit is interlocked with the first rotation shafts 114a and 114b and the second rotation shafts 124, respectively, and the first rotation shafts 114a and 114b rotate by a predetermined angle according to the opening signal. When opening 116a and 116b, the 2nd rotation shaft 124 may be restrained and the 2nd ventilation opening 126 may be kept in a closed state.

In the exemplary embodiments, the locking control unit is interlocked with the locking protrusion 131 and the first rotation shafts 114a and 114b protruding in the horizontal direction on the balance blade 130 and the first ventilation holes 116a and 116b. When in the open state may include a lock fixing portion for contacting the locking projection 131 to fix the rotational movement of the balance blade (130).

The balance blade 130 may be formed at one end of the second rotation shaft 124, and the two locking protrusions 131 may protrude from the balance blade 130 in an outer horizontal direction. The two locking protrusions 131 may be spaced apart from each other in the horizontal direction when the second opening / closing plate 125 is in a vertical state (closed state). In addition, the locking protrusion 131 may have a contact surface facing in the vertical direction.

The lock fixing portion may include a fixing wing 157 extending in a direction orthogonal from the extension arm 156 extending upward from one end of the connecting link 154. The extension arm 156 rises when the first rotation shafts 114a and 114b rotate by a predetermined angle (eg, 90 °) in response to the opening signal in association with the first rotation shafts 114a and 114b. As the arm 156 is raised, the fixing blade 157 may also be raised together to contact the locking protrusions 131 to fix the rotational movement of the balance blade 130.

As shown in FIGS. 4 and 8, when the first rotation shafts 114a and 114b rotate by a predetermined angle according to the opening signal, the extension arm 156 moves upward toward the balance vane 130, The fixed wing 157 may be in contact with the contact surfaces of the locking protrusions 131, and further, may push the balance blade 130 in a horizontal state to fix the balance blade 130 so as not to move.

That is, when the first link 150 is rotated by a predetermined angle (eg, 90 °) according to the opening signal, the connecting link 154 moves upwards and is in an A-shape on the extension arm 156. The connected fixed wing 157 may push the balance wing 130 horizontally to fix the second rotating shaft 124. Accordingly, when the first vent holes 116a and 116b are in the open state, the second vent holes 126 are in a closed state, and thus cannot act as the air pressure valves.

On the contrary, when the first rotation shafts 114a and 114b rotate by a predetermined angle in accordance with the closing signal, the extension arm 156 moves downward and the fixing blade 157 locks protrusions of the balance blade 130. It is separated from the 131, the restraint of the balance blade 130 is released, the second rotation shaft 124 can be rotated in accordance with the rotation of the second opening and closing plate 125.

That is, when the second link 152 rotates by a predetermined angle (for example, 90 °) according to the closing signal, the connection link 154 moves downward and the fixed wing 157 moves in the balance vane 130. Away from the restraint of the second axis of rotation 124. Accordingly, when the first vent holes 116a and 116b are in the closed state, the second vent hole 126 may serve as an air pressure valve that can eliminate the pressure difference.

18 is a side view showing a balanced vane connected to a single return spring.

Referring to FIG. 18, one return spring 132 may be connected to a lower center portion of the balance blade 130. In this case, when the second rotation shaft 124 is rotated by the pressure difference, one return spring 132 may be subjected to a tensile force. When the pressure difference is eliminated, the balance blade 130 may return to the horizontal position by the restoring force of the return spring 132.

19 and 20 are perspective views illustrating a first frame of a ventilation assembly having various structures.

Referring to FIG. 19, the first frame assembly of the ventilation assembly may include first frames 110a and 110b disposed in parallel with each other. Each of the first frames 110a and 110b may define a plurality of first ventilation holes.

Referring to FIG. 20, the first frame assembly of the ventilation assembly may include first frames 110a and 110b stacked perpendicular to each other.

Hereinafter, the operation of the barometric pressure ventilation units in the refrigeration system according to the exemplary embodiments will be described.

First, the first and second pressure balanced ventilation units in the storage system 10 in which the first reservoir 12 of FIG. 1 is a low temperature heat source reservoir and the second reservoir 14 is a relatively high temperature reservoir. The operation of the fields 100A and 100B will be described.

When the first atmospheric pressure ventilation unit 100A supplies cold air from the low temperature reservoir 12 to the second high temperature reservoir 14, the temperature of the second pressure reservoir 14 is lowered and the air pressure is increased. do. At the same time, when the air inside the second reservoir 14 blows the air inside the second reservoir 14 to the first reservoir 12 having a low temperature, the air inside the second reservoir 14 has a low temperature. By circulating toward the reservoir 12, the temperature of the first reservoir 12 rises and the temperature of the second reservoir 14 decreases.

When the temperature of the first reservoir 12 rises to reach the set CUT-IN temperature (eg, −18 ° C.), the refrigerant is supplied to the evaporator by a temperature controller that controls the temperature inside the first reservoir 12. The evaporator fan and the compressor are operated to cool the relatively high temperature air supplied from the second reservoir 14 to lower the temperature of the first reservoir 12.

On the other hand, when the temperature of the second reservoir 14 reaches a set temperature (for example, 0 ° C.) due to the cold air supplied from the first reservoir 12, the second reservoir 14 reaches a predetermined temperature. The first and second barometric pressure ventilation units rotate the first opening / closing plates 117a and 117b about the first rotation shafts 114a and 114b to close the first ventilation holes 116a and 116b which are circulation passages of air. The ventilation fan 202 is stopped.

When the supply of cold air to the second reservoir 14 is stopped, the temperature inside the first reservoir 12 rapidly decreases to reach the set CUT-OFF temperature (eg, −20 ° C.), and the first reservoir 12 By the temperature controller controlling the internal temperature, the liquid pipe electron valve of the refrigerant supplied to the refrigerator evaporator 30 is closed to stop the refrigerant supply, and the evaporator fan and the compressor are stopped.

Thereafter, when the temperature of the second reservoir 14 rises again to reach the set CUT-IN temperature (for example, 2 ° C.) due to the storage inside the second reservoir 14 and the heat penetrated from the outside, 2 The forward and reverse motor 142 is rotated in the forward direction by a temperature controller for controlling the internal temperature of the reservoir 14, so that the first opening and closing plate 117a, 117b of the first and second pressure balanced ventilation units 100A, 100B. ) To open the first vent holes 116a and 116b and the vent fans 202 to operate. The ventilation fans 202 suck the cold air from the first reservoir 12, and blow the air from the second reservoir 14 to the first reservoir 12 to circulate the temperature, thereby again reducing the temperature of the second reservoir 14. Descends. When the temperature of the second reservoir 14 is lowered to reach the preset cut-off temperature (eg, 0 ° C.), the forward and reverse motor 142 is controlled by a temperature controller that controls the temperature inside the second reservoir 14. By rotating in the reverse direction, the first opening / closing plates 117a and 117b rotate to close the first ventilation holes 116a and 116b and the ventilation fans 202 are stopped to set the CUT-IN temperature (for example, 2 ° C.). The operation is stopped until it is reached.

On the other hand, when the temperature of the first reservoir 12 rises to reach the set CUT-IN temperature (for example, −18 ° C.), the liquid pipe electronic valve is controlled by a temperature controller that controls the internal temperature of the first reservoir 12. The open evaporator is supplied with refrigerant and the evaporator fan and compressor are restarted.

When the temperature of the first reservoir 12 drops and reaches the set CUT-OFF temperature (for example, -20 ° C.), the liquid tube solenoid valve is closed by a temperature controller that controls the internal temperature of the first reservoir 12, The supplied refrigerant is stopped, and the refrigerator 12 stops operation until the set CUT-IN temperature (for example, -18 ° C) is reached.

On the other hand, when the air temperature and the pressure drops due to the cold cold air generated from the evaporator 30 inside the first reservoir 12, the pressure balance assembly of the pressure balance ventilation unit serves as a pressure valve, and the second ventilation hole 126 opened. Air in the second reservoir 14 may move to the first reservoir 12 to balance the atmospheric pressure. In addition, when the pressure inside the first reservoir 12 rises momentarily by closing the heat dissipation door of the first reservoir 12, and the pressure inside the first reservoir 12 is momentarily increased by closing the heat dissipation door of the second reservoir 14. As the pressure rises, the pressure balanced ventilation unit balances the pressure by bypassing the air in which the pressure between the first reservoir 12 and the second reservoir 14 rises through the second vent 126. The air is circulated under the control of the regulator 50 to control the required temperature between the first reservoir 12 and the second reservoir 14.

On the other hand, the second ventilation opening 126 of the pressure balance assembly serving as the pressure valve is fixed wing 157 of the upper end of the extension arm 156 when the first ventilation openings (116a, 116b) of the ventilation assembly is open. Restrains the balance vanes 130 of the second rotating shaft so that the second opening / closing plate 125 that opens and closes the second ventilation holes 126 is closed, and when the first ventilation holes 116a and 116b of the ventilation assembly are closed. Only work freely.

Due to this structure, when the ventilation fan of the barometric pressure ventilation unit is operated, a second ventilation port 126, which is a pressure variable, is generated due to local negative pressure generation around the ventilation unit of the first reservoir 12, and is sucked from the first reservoir. The air in the first and second reservoirs, where the air is returned back to the first reservoir and also the air drawn in from the second reservoir, is also returned to the second reservoir through the second vent, is not able to circulate as a whole and locally Only circulating side effects can be prevented.

The operation of the first and second pressure balanced ventilation units 100A, 100B in the storage system 10 in which the first reservoir 12 of FIG. 1 is a heat source warmer and the second reservoir 14 is a heat receiver warmer. This will be described.

When the first atmospheric pressure equalizing unit 100A supplies hot air inside the heat source compartment warmer 12 having a high temperature to the heat receiving compartment warmer 14, the temperature and air pressure of the heat receiving compartment warmer 13 are increased. At the same time, when the second air pressure balanced ventilation unit 100B supplies the air inside the heat receiving unit warmer 14 to the heat source warming unit 12, the air inside the heat receiving unit warmer 14 circulates toward the heat source warming unit 12. Thus, the temperature of the heat source warmer 12 is lowered and the temperature of the heat receiving part warmer 14 is increased. When the temperature of the heat source warmer 12 falls and reaches the set CUT-IN temperature (for example, 45 ° C.), the heater 30, which is a heat source, is controlled by a temperature controller that controls the temperature inside the heat source warmer 12. Power is supplied to the heater and the fan inside the heat source compartment (12) is operated to increase the temperature of the heat source compartment (12).

When the temperature of the heat receiving unit warmer 14 rises to reach the set CUT-OFF temperature (for example, 50 ° C.) due to the hot air supplied from the heat source heating cabinet 12, the pressure-balancing ventilation unit is configured to have a first pressure. The opening / closing plates 117a and 117b are rotated about the first rotation shafts 114a and 114b to close the first ventilation ports 116a and 116b, which are circulation passages of air, and to stop the ventilation fan 202.

When the supply of heat to the heat receiving part warmer 14 is stopped, the temperature inside the heat source part warmer 12 rapidly rises to reach a set CUT-OFF temperature (for example, 60 ° C.), and the heat source warmer 12 By the temperature controller for controlling the internal temperature of the power supply to the heater 30 is interrupted and the fan and the heater stops operating.

Then, due to the heat absorbed from the storage inside the heat receiving compartment 14 and the heat leaked to the outside, the temperature of the heat receiving compartment 14 is lowered again to reach the set CUT-IN temperature (for example, 45 ℃). 1, the first and second pressure balanced ventilation units 100A and 100b are opened and closed by rotating the forward and reverse motor 142 in the forward direction by the temperature controller 50 controlling the temperature inside the heat receiving unit warmer 14. The plates 117a and 117b are rotated to open the first ventilation holes 116a and 116b and to operate the ventilation fans 202. The ventilation fans 202 suck the hot air from the heat source compartment (12) and blow the air from the heat source compartment (14) to the heat source compartment (12) to circulate the temperature of the heat compartment compartment (14) again. Will rise.

When the temperature of the heat receiving compartment 14 rises and reaches a set cut-off temperature (for example, 50 ° C.), the forward and reverse motor 142 is reversed by a temperature controller for controlling the temperature inside the heat receiving compartment 14. The first opening / closing plate 117a, 117b rotates to close the first ventilation holes 116a, 116b and the ventilation fans 202 are stopped to reach the set CUT-IN temperature (for example, 45 ° C). Until it stops.

On the other hand, when the temperature of the heat source compartment (12) is lowered to reach the set CUT-IN temperature (for example, 55 ℃) by the temperature controller 50 for controlling the internal temperature of the heat source compartment (12), Electricity is supplied to the heater and the heat source warmer fan 202 is restarted.

When the temperature of the heat source warmer 12 rises to reach the set cut-off temperature (for example, 60 ° C.), the temperature controller controls the internal temperature of the heat source warmer 12 and supplies it to the heat source warmer heater and the fan. The supplied power is interrupted and the heat source warmer stops operating until the set CUT-IN temperature (eg 55 ° C) is reached.

On the other hand, when the temperature and air pressure rise due to the hot heat generated from the heater 30 in the heat source warmer 12, the pressure balance assembly of the pressure balance ventilation unit serves as a pressure valve, and the second ventilation hole 126 opened. The heat inside the heat source warmer 12 is moved to the heat receiving unit warmer 14 through) to maintain a balance of air pressure.

In addition, when the internal pressure of the heat source compartment (12) instantly rises due to the heat source compartment (12) heat dissipation door closing, the air pressure balance ventilation unit bypasses the air through the second ventilation opening (126) to In balance, the temperature in the refrigerator can be controlled by circulating air between the heat source warmer 12 and the heat receiving part warmer 14.

Meanwhile, an unbalance of pressure occurs between the first reservoir and the second reservoir so that the second vent is opened so that the air of the first reservoir moves to the second reservoir, or conversely, the air of the second reservoir moves to the first reservoir. In addition, the time for opening the second ventilation opening due to the air pressure difference is extremely short, and the storage system can be controlled within the set temperature.

On the other hand, in the case where the heat source is installed in both the first and second reservoirs, when one of the first reservoir and the second reservoir has failed, the storage is caused by a sudden change in temperature when the storage is contained in the failure place. It can be deteriorated and is often chased by time to repair it.

At this time, if the atmospheric pressure equalizing ventilation unit is installed, it is possible to cover the required heat source of the faulted side as one heat source that does not fail.

In the case of the storage of temperature control, the facility is constructed in consideration of the maximum load, so that the time required for repair in case of failure can be obtained, and thus it can function as a spare facility in case of emergency.

21 is a cross-sectional view illustrating a storage system in accordance with example embodiments. FIG. 22 is a circuit diagram illustrating an automatic exhaust system in the storage system of FIG. 21. The storage system is installed as a ventilation unit excluding the pressure balance assembly from the pressure balance ventilation unit, and is substantially similar to the storage system of FIG. 1 except that it is installed on the wall of one reservoir. Accordingly, the same components are denoted by the same reference numerals, and repeated descriptions of the same components are omitted.

21 and 22, the balanced pressure ventilation unit according to the exemplary embodiments is an improvement of the exhaust unit of the applicant's patent 10-0933006, in which only the first reservoir (or the first chamber) exists. And a first ventilation unit for sucking external air into the first reservoir (or the first chamber) in an outer wall of the first reservoir (or the first chamber), and influencing the influence of the first ventilation unit. It may be installed as a second ventilation unit for discharging the gas inside the second reservoir (or the second chamber) on another external wall which is not received. Agricultural products or other storages are present in the first reservoir (or the first chamber), and harmful gases are generated by internal storage or introduced from the outside. When the gas is harmful to the water or other storage, it detects the concentration of this gas and automatically discharges the gas by using the ventilation unit, and draws fresh air outside to keep the indoor gas concentration within the set value. You can perform more functions.

In more detail, when the gas detected in the room is a gas generated by a fire, the air generated by the combustion of the room is discharged to the outside, the fresh air is supplied to the room, and the room is detected. If the prepared gas is a specific toxic gas other than the gas generated by the fire, it can provide a system that detects this and discharges the toxic gas to the outside and supplies gas to the room to neutralize the oxygen or the prepared toxic gas. have.

As described above, the barometric pressure equalizing unit according to the present invention is installed between two or more heat source cold storage and cold storage, the freezer and the refrigerator (or between the heat source warmer and the heat storage warmer) at different temperatures, so that a low heat source The air of the reservoir having a relatively low temperature can be sent to an adjacent reservoir to keep the temperature low to control the temperature of the adjacent reservoir without installing a separate refrigerator in the second reservoir. On the other hand, such a system is not only possible between the freezer and the refrigerator, but if there is a slight temperature difference between the freezer and the freezer, between the freezer and the freezer and the water cooler without the cold source, the temperature can be controlled. It is widely available for industrial use.

In addition, by sending the air of the heat source compartment warmer having a relatively high temperature to the heat receiver compartment to maintain a high temperature, it is possible to control the temperature of the adjacent heat receiver compartment without installing a separate heat source in the adjacent heat compartment compartment. A single heat source can be used to control the temperature of several nearby reservoirs.

In the existing industrial or commercial refrigerators, one condensing unit is used to install the coolers in two or more places where the temperature is different, thereby controlling the temperature. However, this method also had to install a cooler in the refrigerating chamber, and to install equipment such as refrigerant pipe, defrost water pipe, and complicated electric wiring. In addition, in order to solve the problem caused by the pressure drop in the refrigerating compartment refrigerant pipe caused by the evaporation temperature difference, an expensive evaporation pressure adjusting valve had to be installed at the refrigerant pipe.

In addition, various problems caused by installing and operating the cooler, such as rapid rise in the internal temperature during defrosting, additional space as long as the length of the heater to replace the defrosting heater when installing the cooler is required, installation in a narrow place Many problems are inherent, such as frequent troubleshooting due to damage to pharmaceutical and defrost heaters.

However, according to the present invention, by installing a small pressure equalization ventilation unit in the partition wall for lowering the temperature of the refrigerating chamber, it is not necessary to construct the refrigerant pipe, the defrost water pipe, the cooler and the evaporation pressure adjusting valve, and thereby save the mechanical equipment. There are various advantages such as ease of construction and saving of construction labor cost, reduction of refrigerant usage, utilization of cooler installation space due to no cooler installation, and no need of securing cooler installation space and defrost heater replacement space.

On the other hand, the capacity of the freezer to be installed in the freezer should be the combined capacity of the freezer capacity and the refrigerator, but this is compared to the case of installing each freezer in the freezer and the refrigerator, and the installation and maintenance costs, such as material costs and labor costs, space used There are many advantages, such as increase.

In addition, when a heat source is installed in both the first and second reservoirs, either one of the first reservoir and the second reservoir (for example, the second reservoir) has failed and the storage is contained in the broken place. If an air pressure balanced ventilation unit is installed, it can supply the necessary heat source of the faulted side as a heat source of any one (e.g. storage) that has not failed, so that it can buy the time required for repair in case of a breakdown and prepare for an emergency It can function as a spare facility.

Although the above has been described with reference to the embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. It will be appreciated.

* Explanation of the sign

10: storage system 12: first storage

14: 2nd cellar 16: middle wall

30: heat source 40: external air pressure valve

50: temperature controller 50a: first reservoir temperature sensor

50b: second reservoir temperature sensor

100, 100A, 100B: Balanced Pressure Ventilation Unit

110: first frame 111a, 111b: first vertical frame

112a, 112b: first horizontal frame 113: divided frame

114a, 114b: 1st rotation shaft 116a, 116b: 1st ventilation opening

117a and 117b: first opening and closing plate 120: second frame

121a, 121b: second vertical frame 122a, 122b: second horizontal frame

124: second axis of rotation 125: second opening and closing plate

125b: load part 126: second ventilation port

130: balance wing 131: locking projection

140: drive unit 142: forward and reverse motor

144: reducer 150: first link

152: second link 154: connection link

156: extension arm 157: fixed wing

160: first micro switch 162: second micro switch

200: ventilation fan unit 202: ventilation fan

210: grill

Claims (34)

1. A first frame defining a first vent, a first rotating shaft installed in the first vent, and a first opening and closing plate provided on the first rotating shaft and rotating together with the first rotating shaft to open and close the first vent; 1 frame assembly;

   A second frame disposed adjacent to the first frame assembly and defining a second ventilation opening, a second rotating shaft installed in the second ventilation opening, and the second rotating shaft and rotating together with the second rotating shaft to form the second ventilation opening; A second frame assembly having a second opening and closing plate for opening and closing a ventilation opening, the second opening and closing plate being rotatable by a pressure difference applied to both sides of the second opening and closing plate to open the second ventilation opening;

   A driving unit connected to the first rotation shaft and having a forward and reverse motor for rotating the first rotation shaft in a forward or reverse direction according to an open signal or a close signal;

   A driving controller connected to the first rotation shaft and the forward / reverse motor, respectively, and controlling the forward / reverse motor by blocking the opening signal or the closing signal when the first rotation shaft rotates by a predetermined angle; And

   And interlocked with the first rotation shaft and the second rotation shaft, respectively, restraining the second rotation shaft when the first rotation shaft rotates by a predetermined angle according to the opening signal to open the first ventilation port. Balanced pressure ventilation unit including a lock control for keeping in a closed state.
2. The lower first rotary shaft and the upper first vent of claim 1, wherein the first vent includes a lower first vent and an upper first vent disposed in a vertical direction, and the first rotary shaft is installed in the lower first vent. 1, an upper first rotation shaft installed in the ventilation hole, wherein the first opening / closing plate includes a lower first opening / closing plate provided on the lower first rotation shaft and an upper first opening / closing plate provided on the upper first rotation shaft. Atmospheric pressure balanced ventilation unit.
3. 3. The method of claim 2, wherein the upper first rotation axis is connected to the first link, the lower first rotation axis is connected to the second link, and the first link and the second link are connected to each other by a connection link. Atmospheric pressure balanced ventilation unit.
4. The pressure balanced ventilation unit of claim 3, wherein the first link is an input link connected to a drive shaft of the stationary motor, and the second link is an output link.
5. The method of claim 3, wherein the lock control unit

   A balance blade formed at one or both ends of the second rotation shaft and having a locking protrusion formed in a horizontal direction; And

   And a fixed wing coupled to the connection link, the fixed wing configured to rise when the first rotational axis rotates by a predetermined angle according to the opening signal to contact the locking protrusion and restrain the balanced wing. Ventilation unit.
6. The method of claim 5, wherein at least two locking projections are spaced apart from each other in a horizontal direction,

   When the first rotational shaft rotates, the fixed blade is raised to contact the two locking projections in contact with the two balanced projections, characterized in that the leveling vane fixed in a horizontal state.
7. The pressure balanced ventilation unit of claim 2, wherein the first frame comprises a split frame dividing the lower first vent and the upper first vent.
8. 8. The air pressure equalizing unit according to claim 7, wherein the split frame is gradually thinned toward one end.
9. According to claim 1, Wherein the locking jaw is formed in the center of the inner surface of the first frame and the center of the split frame, respectively, The first opening and closing plate is seated on the locking jaw when the first rotation axis is rotated by a predetermined angle Balanced pressure ventilation unit, characterized in that the.
10. 10. The method of claim 9, wherein the protrusions are formed in the inner center and the lower center of the second frame, respectively,

    The locking jaw and the protrusion are provided with a heater insertion groove, respectively, and the heater insertion groove is provided with a heater to prevent freezing between the first and second frames and the first and second opening and closing plates. Pressure balanced ventilation unit.
11. The method of claim 1, wherein the drive control unit,

    A first micro switch interlocked with the first rotation shaft and blocking the opening signal when the first rotation shaft rotates by a predetermined angle according to the opening signal;

    A second micro switch interlocked with the first rotation shaft and blocking the closing signal when the first rotation shaft rotates by a predetermined angle according to the closing signal; And

    And a driving circuit connected to the first and second micro switches, respectively, the driving circuit having relays to stop the stationary motor when any one of the open signal and the close signal is blocked.
12. 12. The method of claim 11, wherein the first ventilation opening comprises a lower first ventilation opening and an upper first ventilation opening arranged in a vertical direction, the first rotation shaft is a lower first rotating shaft and the upper first installed in the lower first ventilation opening 1, an upper first rotation shaft installed in the ventilation hole, wherein the first opening / closing plate includes a lower first opening / closing plate provided on the lower first rotation shaft and an upper first opening / closing plate provided on the upper first rotation shaft. Atmospheric pressure balanced ventilation unit.
13. The method of claim 12, wherein the first link connected to the upper first rotation shaft rotates by a predetermined angle in the opening direction with respect to the upper first rotation shaft, and then contacts the first micro switch to block the opening signal. And a second link connected to the lower first rotating shaft rotates by a predetermined angle in a downward direction with respect to the second lower rotating shaft to contact the second micro switch to block the closing signal.
14. The second opening and closing plate of claim 1, wherein the second opening and closing plate is opened when a pressure difference applied to both sides of the second opening and closing plate occurs, and is closed when the pressure difference is removed, and the second rotation shaft of the second opening and closing plate is formed. Positioned at the top of the second vent, the center of gravity of the second opening and closing plate is lower than the second axis of rotation, the pressure balanced ventilation unit, characterized in that to close the second vent by its own weight.
15. 15. The method of claim 14, wherein the lower portion of the second opening and closing plate has a recessed area recessed to receive the air pressure, and in contact with the lower horizontal frame, to minimize the frictional resistance with the lower horizontal frame when opening and closing the ventilation openings. The air pressure balanced ventilation unit, characterized in that the lower surface of the second opening and closing plate is curved.
16. The second rotating shaft of claim 1, wherein the second opening / closing plate is opened by a pressure difference applied to both front and rear sides of the second opening / closing plate, and the pressure difference is eliminated on both front and rear sides of the second opening / closing plate. And the second opening / closing plate is returned to the closed position by a restoring force provided by a return spring provided at one end thereof.
17. The second rotating shaft of claim 1, wherein the second opening / closing plate is opened by a pressure difference applied to both front and rear sides of the second opening / closing plate, and the pressure difference is eliminated on both front and rear sides of the second opening / closing plate. When the second opening / closing plate approaches the closed position by a restoring force provided by the return spring provided at one end, the first magnet part provided at the lower end of the second opening / closing plate and correspondingly provided on the second frame The air pressure balanced ventilation unit characterized by improving the airtightness of the said 2nd opening-and-closing plate by the magnetic force between 2 magnet parts.
18. The pressure balanced ventilation unit of claim 1, further comprising a temperature controller for supplying the open signal and the closed signal to the forward and reverse motors according to a temperature of a reservoir in which the pressure balanced ventilation unit is installed.
19. The pressure balanced ventilation unit of claim 1, further comprising a ventilation fan disposed on one side of the first frame and configured to discharge or supply air through the first ventilation hole.
20. 20. The pressure balanced ventilation unit of claim 19, wherein the ventilation fan operates when the open signal is supplied and stops when the closing signal is supplied.
21. A first reservoir having a heat source;

    A second cellar adjacent said first cellar with a wall therebetween;

    A first atmospheric pressure ventilation unit installed at the wall and supplying air in the first reservoir to the second reservoir; And

    A second atmospheric pressure ventilation unit installed on the wall adjacent to the first atmospheric pressure ventilation unit, and supplying air in the second reservoir to the first reservoir,

    At least one of the first and second barometric pressure ventilation units

    A first frame defining a first vent, a first rotating shaft installed in the first vent, and a first opening and closing plate provided on the first rotating shaft and rotating together with the first rotating shaft to open and close the first vent; 1 frame assembly;

    A second frame disposed adjacent to the first frame assembly and defining a second ventilation opening, a second rotating shaft installed in the second ventilation opening, and the second rotating shaft and rotating together with the second rotating shaft to form the second ventilation opening; A second frame assembly having a second opening and closing plate for opening and closing a ventilation opening, the second opening and closing plate being rotatable by a pressure difference applied to both sides of the second opening and closing plate to open the second ventilation opening;

    A driving unit connected to the first rotation shaft and having a forward and reverse motor for rotating the first rotation shaft in a forward or reverse direction according to an open signal or a close signal;

    A driving controller connected to the first rotation shaft and the forward / reverse motor, respectively, and controlling the forward / reverse motor by blocking the opening signal or the closing signal when the first rotation shaft rotates by a predetermined angle; And

    A lock interlocked with the first rotation shaft and restraining the second rotation shaft when the first rotation shaft rotates by a predetermined angle according to the opening signal to open the first ventilation port, thereby maintaining the second ventilation port in a closed state. And a control unit.
22. 22. The method of claim 21, wherein the first reservoir is a cold reservoir having a low heat source, the second reservoir is a cold reservoir of the cold water receiving cold air from the first reservoir, the heat source of the first reservoir comprises a freezer Characterized by a storage system.
23. 22. The storage system of claim 21, wherein the first reservoir is a heat source warmer, the second reservoir is a heat reservoir and the heat source of the first reservoir comprises a heater and a heat pump.
24. 22. The storage system of claim 21, further comprising a temperature controller for supplying the open signal and the closed signal to the stationary motor in accordance with the temperature inside the first and second reservoirs.
25. 22. The air conditioner of claim 21, wherein at least one of the first and second barometric pressure ventilation units further comprises a ventilation fan disposed on one side of the first frame and configured to discharge or supply air through the first vent. Storage system, characterized in that.
26. 26. The storage system of claim 25, wherein the ventilation fan is activated when the open signal is supplied and stops when the close signal is supplied.
27. 22. The method of claim 21, wherein the first ventilation opening comprises a lower first ventilation opening and an upper first ventilation opening arranged in a vertical direction, the first rotation shaft is a lower first rotating shaft and the upper first installed in the lower first ventilation opening 1, an upper first rotation shaft installed in the ventilation hole, wherein the first opening / closing plate includes a lower first opening / closing plate provided on the lower first rotation shaft and an upper first opening / closing plate provided on the upper first rotation shaft. Characterized by a storage system.
28. 28. The method of claim 27, wherein the upper first axis of rotation is connected to a first link, the lower first axis of rotation is connected to a second link, the first link and the second link are connected to each other by a connecting link,

    When the first rotation shaft is rotated by a predetermined angle according to the opening signal, the fixed blade provided on the upper end of the extension arm extending from the connecting link, the locking projection of the flat blade formed on one end of the second rotation shaft And upwards to constrain the balance vane.
29. The method of claim 21, wherein the drive control unit,

    A first micro switch interlocked with the first rotation shaft and blocking the opening signal when the first rotation shaft rotates by a predetermined angle according to the opening signal;

    A second micro switch interlocked with the first rotation shaft and blocking the closing signal when the first rotation shaft rotates by a predetermined angle according to the closing signal; And

    And a drive circuit connected to the first and second micro switches, respectively, and having relays to stop the forward and reverse motors when either one of the open signal and the close signal is interrupted.
30. 22. The storage system of claim 21, further comprising an external air pressure valve installed in at least one of the first and second reservoirs to balance pressure inside and outside the first and second reservoirs. .
31. 22. The method of claim 21, wherein the first reservoir has a low heat source, and without installing an external pressure valve in the first reservoir having a relatively low temperature, by installing a pressure valve in a second reservoir having a relatively high temperature, The high temperature outside air does not directly penetrate into the relatively low temperature first reservoir, but enters the relatively high temperature second reservoir and adjusts the air pressure of the first and second reservoirs, thereby Storage system, characterized in that it is possible to prevent sudden temperature changes and thermal shock generated when hot heat penetrates directly.
32. 22. The method of claim 21, wherein the first reservoir has a high heat source, and without installing an external pressure valve in a first reservoir having a relatively high temperature, by installing a pressure valve in a second reservoir having a relatively low temperature, The low temperature outdoor air does not directly penetrate into the relatively high temperature first reservoir, but enters the relatively low temperature second reservoir and adjusts the air pressure of the first and second reservoirs so that Storage system characterized in that it can prevent the sudden temperature change and energy loss caused by direct penetration of cold air.
33. 22. The storage system as claimed in claim 21, wherein the gas generated in the reservoir is sensed to detect the gas inside the reservoir, and the indoor gas is discharged to the outside, and the fresh air is supplied to the interior.
34. 22. The gas of claim 21, wherein the gas inside the reservoir is sensed so as to emit toxic gas instead of a gas generated by a fire and to neutralize previously prepared oxygen or toxic gas. Storage system, characterized in that for supplying the room.

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