JP3745916B2 - Air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner equipped with a ventilation fan, and more particularly to improving the performance of the ventilation fan, improving serviceability and dismantling work efficiency, and improving the installation work of the air conditioner with a ventilation fan. It is.
[0002]
[Prior art]
The following are known as an air conditioner provided with a conventional ventilation fan.
(1) The air conditioner body and the ventilation fan are divided, and the ventilation fan is locked to the left or right of the air conditioner body using screws.
(2) Built into the right side of the air conditioner body, next to or below the electrical component box.
(3) A ventilation fan installed near the outdoor wall.
[0003]
[Problems to be solved by the invention]
Problems to be solved by the air conditioner provided with the conventional ventilation fan will be described below.
(1) In the case where the air conditioner main body and the ventilation fan are divided, the installation work is complicated and it takes time to install.
(2) The air conditioner main unit with a built-in ventilation fan next to or under the right electrical box is a limited storage space at the back of the box air passage when installing ventilation ducts to the left of the indoor unit. Since the refrigerant pipe and the ventilation duct are simultaneously stored in the space, the effective area of the ventilation duct cannot be secured, the pressure loss increases, and a sufficient ventilation air volume cannot be obtained, and the noise increases.
(3) In the case where a ventilation fan is installed in the vicinity of the outdoor wall, installation work of the ventilation fan occurs separately from the standard installation of the indoor unit, and the electrical wiring that links the ventilation fan and the air conditioner body Is necessary and installation work is troublesome.
[0004]
The present invention has been made in order to solve the above-described problems, and improves ventilation performance by suppressing air volume reduction and noise deterioration due to a ventilation duct of a ventilation fan, and a smooth air passage of the ventilation fan itself. The air conditioner equipped with a ventilation fan that can improve the performance by configuring the air blower and facilitate the recycling by improving the dismantling workability of the ventilation fan and shortening the installation work time and improving the efficiency with an easy structure The purpose is to provide.
[0005]
[Means for Solving the Problems]
Air conditioner according to this invention, the indoor unit body, is contained on one side of the body, the ventilating blower for exhausting to the outside of the supply air or the room air to the outside air in the room, the main body A refrigerant pipe or the like of a refrigeration cycle provided on the other side part, a ventilation duct connected to a ventilation fan, and a rear storage space part provided on the back of the main body for storing the refrigerant pipe or the ventilation duct, When providing a wall piping opening facing one side of the main unit, storing a refrigerant pipe or the like in the back storage space and providing a wall piping opening facing the other side of the main unit The ventilation duct is stored in the back storage space, the ventilation fan is stored in the side of the main body opposite to the refrigerant pipe, and the ventilation fan is configured as follows.
(A) The ventilation blower has a rotatable fan corresponding to supply or exhaust;
(B) One end of the air path of the ventilation blower is located in the lower part on the front side of the indoor unit body, and the other end of the air path is located in the back storage space of the indoor unit body;
(C) The indoor unit body is provided with a heat exchanger, and the ventilation fan is installed on the side adjacent to the anti-refrigerant piping side of the heat exchanger.
[0017]
Moreover, the ventilation duct accommodated in a back surface storage space part is comprised with the elastic bellows tube.
[0019]
Further, the length of the refrigerant pipe is set to be equal to or longer than the width of the main body, and the connecting portion with the extension pipe connected to the refrigerant pipe is configured to be exposed to the outside.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIGS. 1 to 3 are diagrams showing the first embodiment. FIG. 1 is a perspective view in which a ventilation fan is arranged inside the left end of the indoor unit of the air conditioner. FIG. FIG. 3 is a rear perspective view of a state where a ventilation duct is disposed in the space, and FIG. 3 is a rear perspective view of a state where refrigerant piping is disposed in the storage space on the back of the box air passage of the indoor unit.
[0021]
In the figure, 1 is an indoor unit of a separate type air conditioner, 2 is a pipe storage space provided in the lower part on the back side of the indoor unit 1, 3 is provided on the left side when viewed from the front of the indoor unit 1, A ventilation fan for supplying air to the room or exhausting the room air to the outside, 4 is a connecting member A for connecting the ventilation duct A5 to the ventilation fan 3, and the ventilation duct A5 is a back storage space on the back of the box. It is stored in the pipe storage space 2 as a part. 6 is a refrigerant pipe of the refrigeration cycle, and is provided on the right side when viewed from the front of the indoor unit 1. Reference numeral 25 denotes a heat exchanger of the refrigeration cycle, to which the refrigerant pipe 6 is connected.
[0022]
When installing the air conditioner configured as described above, a case will be described in which a pipe hole, also called a wall pipe opening, is opened at a position facing the right end of the indoor unit 1.
As shown in FIG. 2, the ventilation duct A5 connected to the ventilation fan 3 via the connection member A4 is stored in the pipe storage space 2 on the back of the box, and the refrigerant pipe 6 and the like (from the right side of the indoor unit 1) ( For example, a drain hose and an electrical wiring are included), and a pipe hole in a wall opened at a position facing the right end of the indoor unit 1 is led to the outside and connected to an outdoor unit (not shown).
[0023]
Therefore, in this case, since only the ventilation duct A5 is stored in the pipe storage space 2 on the back of the box, the conventional ventilation fan is stored at one end of the indoor unit together with the refrigerant pipe and the other end. Compared with what goes out of the room through a pipe hole on the wall facing the pipe, there is an advantage that the pipe storage space 2 can be reduced or the cross-sectional area of the ventilation duct A5 can be increased.
By ensuring a large cross-sectional area of the ventilation duct A5, it is possible to reduce pressure loss due to the effect of the duct area and pressure loss due to the length of the duct, prevent a decrease in ventilation air volume, and reduce the flow velocity in the ventilation duct, thereby reducing noise. The effect of reducing the is obtained.
[0024]
In addition, as shown in FIG. 3, when the pipe hole in the wall is opened at a position facing the left end of the indoor unit 1, the refrigerant pipe 6 and the like are stored in the pipe storage space 2 on the back of the box. From the left side of the inner unit 1 and the ventilation duct A5, it is led out of the room through a pipe hole in the wall opened at a position facing the left end of the indoor unit 1 and connected to the outdoor unit.
[0025]
Accordingly, in this case as well, only the refrigerant pipe 6 and the like are stored in the pipe storage space 2 on the back of the box, so that the conventional ventilation fan is stored in the one side end portion of the indoor unit together with the refrigerant pipe and the other side end. There is an advantage that the pipe storage space 2 can be reduced as compared with the case where the pipe is exposed to the outside through the pipe hole on the wall facing the section.
[0026]
In addition, since only one of the ventilation duct A5 and the refrigerant pipe 6 is stored in the pipe storage space 2, installation work is facilitated by using the pipe storage space 2 widely and effectively.
[0027]
Furthermore, since only one of the ventilation duct A5 and the refrigerant pipe 6 is stored in the pipe storage space 2, the pipe storage space 2 can be reduced, and the indoor unit 1 of the air conditioner having the ventilation fan 3 is provided. Can be miniaturized.
[0028]
In the above-described embodiment, the ventilation fan 3 is provided on the left side when viewed from the front of the indoor unit 1, and the refrigerant pipe 6 or the like of the refrigeration cycle is provided on the right side when viewed from the front of the indoor unit 1. As shown, the refrigerant pipe 6 or the like may be provided on the left side of the indoor unit 1, and the ventilation fan 3 may be provided on the right side of the indoor unit 1.
In either case, either the refrigerant pipe 6 or the ventilation duct A5 of the ventilation fan 3 may be stored in the pipe storage space 2 on the back of the box.
[0029]
Embodiment 2. FIG.
FIGS. 4 and 5 are diagrams showing the second embodiment, and an air conditioner provided with a ventilation fan provided with a reverse wind prevention valve in the vicinity of one end in an air passage constituted by right and left casings for air passage constitution of the ventilation fan. FIG. 5 is a partial detailed cross-sectional view of the indoor unit of FIG.
[0030]
In FIG. 4, 1 to 6 are the same as those shown in the first embodiment. 7 is a left and right casing for an air path structure as an example of an air path constituent member, 8 is an air path formed by an air path structure left and right casing 7, 9 is a fan that is driven by an electric motor and can be switched between forward and reverse rotations. Is a reverse wind prevention valve as an example of the reverse wind prevention means provided in the air passage 8, 11 is a drive motor for automatically opening and closing the reverse wind prevention valve 10, and 12 is a driving force from the drive motor 11 to the reverse wind prevention valve 10. , 13 is a position detection sensor for the backwind prevention valve 10, 14 is an air purifying filter provided near one end of the air passage 8, and 15 is provided in the indoor unit 1 of the air conditioner. An insertion / extraction port of the air cleaning filter 14, 16 is a sensor attachment for providing sensors for detecting temperature, humidity, etc. 17 is a ventilation duct B, 24 connected to one end of the air passage 8. Is a replacement on the wall A piping hole through which the duct 17.
[0031]
A reverse wind prevention valve 10 when the ventilation blower 3 is stopped is provided at a curved portion near one end in the air passage 8 constituted by the left and right casings 7 for constructing the air path of the ventilation fan 3. By making the shape substantially coincide with the smooth surface constituted by the central axis of the curved portion, it is used as a rectifying plate during operation of the ventilation fan 3.
When the reverse wind prevention valve 10 is opened, the turbulent flow in the air passage 8 is suppressed by functioning as a rectifying plate, and the decrease in the air volume and the deterioration in noise are suppressed.
When the back wind prevention valve 11 is closed, it is possible to prevent outside air and insects from entering the room.
[0032]
The reverse wind prevention valve 11 provided in the air passage 8 of the ventilation blower 3 is automatically opened and closed by automatic opening and closing means driven by a gear train 12 that transmits a driving force by a drive motor 11 for automatically opening and closing. The position detection sensor 13 for detecting the operating state of the ventilation blower 3 controls the back wind prevention valve 11 to a closed position when it is stopped, and shuts off the air flow so that the temperature difference and humidity in and out of the room. The difference between the inside and the outside of the ventilation fan 3 and the ventilation duct B17 is surely suppressed by the difference.
[0033]
An air purifying filter 14 is provided in the vicinity of one end of the exhaust passage during exhaust operation of the ventilation blower 3 in the air passage 8 constituted by the left and right casings 7 for constructing the air passage of the ventilation blower 3, and the indoor unit 1 The air purifying filter insertion / extraction opening 15 is provided in the lower part of the front surface of the air. By providing the insertion / extraction port 15 for inserting / removing the air purification filter 14 at the lower front portion of the indoor unit 1, the cleaning operation of the air purification filter 14 can be easily performed.
[0034]
A sensor attachment 16 for providing sensors for detecting indoor and outdoor temperature / humidity and the like in the air passage 8 constituted by the right and left casing 7 for air passage constitution of the ventilation fan 3 is provided for the right and left air passage constitution. The casing 7 is provided. By making the sensor attachment 16 substantially coincide with the inner shape of the air passage 8, the flow of the air current in the air passage 8 can be made smooth and the sensors can be installed at a position where the sensors can be reliably operated.
[0035]
Further, as shown in FIG. 5, by using the sensor fixture 16 as a fixing part which is a fixing means for the right and left casing 7 for air passage construction, a structure that can be attached and detached with one touch is obtained, and the ventilation fan is disassembled. In addition, the serviceability can be improved, and the stoppage by the screw can be minimized to shorten the time for dismantling the ventilation blower 3 at the time of product disposal, thereby improving the recyclability.
[0036]
Embodiment 3 FIG.
FIG. 6 is a diagram showing the third embodiment, and is a perspective view showing a connection state between a ventilation duct and a connection duct housed in the box air passage rear surface storage space of the indoor unit.
In the figure, 5 is a ventilation duct A which is a first ventilation duct housed in the pipe housing space 2 on the back of the box air passage, and 17 is a second part having a semicircular cross section which can be inserted into a pipe hole 24 provided in the wall. Ventilation ducts B and 18, which are ventilation ducts, are connection members B that connect the ventilation duct A5 and the ventilation duct B17.
The semicircular ventilation duct B17 is provided with refrigerant piping, a drain hose, electrical wiring, and the like in the remaining semicircular portion, and exits from the piping hole 24 provided in the wall.
[0037]
The connection member B18 has a plurality of claws 19 that are engagement members that can be simply fixed to the ventilation duct A5, and the ventilation duct A5 has a plurality of fitting portions that are fitting openings that fit the claws 19. 20 is provided. The connecting member B18 is movable in rotation with the ventilation duct A5, and the semicircular direction of the ventilation duct B18 can be switched to an arbitrary direction, and is fixed by a claw 19 with a fixing portion that has both positioning and prevention.
[0038]
According to the above-described embodiment, the direction of the ventilation duct A5 can be switched to an arbitrary direction by the connection member B18, and the types of parts can be reduced by providing the fixing portion having both positioning and prevention of removal by the claw 19. The cost can be reduced.
[0039]
Embodiment 4 FIG.
FIG. 7 is a diagram showing the fourth embodiment, and is a perspective view of a ventilation duct housed in the box air passage back surface storage space of the indoor unit.
In the figure, 21 is a ventilation duct A composed of a telescopic bellows tube, which is housed in the pipe housing space 2 on the back of the box air passage of the indoor unit 1.
[0040]
By using a telescopic bellows tube for the ventilation duct A21, the installation work can be performed without being affected by the positional deviation between the indoor unit 1 and the piping hole 24 provided in the wall.
[0041]
Embodiment 5. FIG.
In a separate air conditioner equipped with a ventilation fan, the diameter of the refrigerant pipe 6 that connects the indoor unit 1 and the outdoor unit is reduced by using an alternative chlorofluorocarbon as a refrigerant for the refrigeration cycle of the air conditioner. It becomes possible to make it the same diameter regardless of the size, and without reducing the piping hole 24 provided in the wall, by securing the area of the ventilation duct B17, it is possible to suppress the decrease in ventilation air volume and noise deterioration. It is what I did.
An HFC refrigerant is used as an alternative chlorofluorocarbon, and typical ones are R410A, R407C, and the like.
In the case of the R22 refrigerant, a gas pipe of 9.52Φ is used for a separate type air conditioner of less than 3.2 KW, and a gas pipe of 12.7Φ is used for 3.2 KW or more.
On the other hand, for example, when R410A is used, the gas pipe may be 9.52Φ regardless of the cooling capacity. This is because the flow rate of the refrigerant in R410A is slower than that in R22 at the same condensation temperature and evaporation temperature.
[0042]
Embodiment 6 FIG.
FIG. 8 is a diagram showing the sixth embodiment, and shows a state in which the length of the refrigerant pipe connected to the heat exchanger built in the indoor unit extends at least the lateral width of the indoor unit and is inserted into the pipe hole in the wall. FIG.
In the figure, the separate type air conditioner provided with the ventilation fan 3 extends the length of the refrigerant pipe 6 connected to the heat exchanger 25 built in the indoor unit 1 to at least the lateral width of the indoor unit 1. Thus, the nut portion 23 for connecting the refrigerant pipe 6 and the extension pipe 22 protrudes from the pipe hole 24 provided on the wall to the outside, regardless of whether the direction in which the refrigerant pipe 6 of the indoor unit 1 is pulled out is left or right. Thus, when the ventilation duct B17 is inserted into the pipe hole 24 together with the refrigerant pipe 6, it can be inserted without being affected by the nut portion 23, and installation work is facilitated.
[0043]
【The invention's effect】
The air conditioner according to the present invention stores the ventilation duct or the refrigerant pipe in the back storage space when the air conditioner is installed. Therefore, when storing the ventilation duct in the back storage space, The rear storage space can be made smaller or ventilated when compared with the one that houses the blower at one side end of the indoor unit together with the refrigerant pipe and out of the wall through the hole on the wall facing the other end. There is an advantage that the cross-sectional area of the duct can be increased.
By ensuring a large cross-sectional area of the ventilation duct, pressure loss due to the effect of the duct area and pressure loss due to the length of the duct can be reduced, and a reduction in ventilation airflow can be prevented, and the flow velocity in the ventilation duct can be reduced, thereby reducing noise. The effect of reducing is obtained.
When storing the refrigerant piping etc. in the rear storage space, store the conventional ventilation fan together with the refrigerant piping etc. at one end of the indoor unit and through the pipe hole on the wall facing the other end. There is an advantage that the back storage space can be made smaller compared to the case described above.
Further, since only one of the ventilation duct and the refrigerant pipe is stored in the storage space, installation work is facilitated by using the storage space widely and effectively.
Furthermore, it is possible to reduce the size of the indoor unit of the air conditioner including the ventilation fan.
[0051]
In addition, since the ventilation duct stored in the back storage space is made of an elastic bellows tube, installation work can be performed without being affected by the positional deviation between the indoor unit and the piping opening provided on the wall. it can.
[0053]
In addition, the length of the refrigerant pipe is longer than the width of the main body, and the connection part with the extension pipe connected to the refrigerant pipe goes out of the room, so the ventilation duct is connected to the pipe opening together with the refrigerant pipe. The installation work can be facilitated by allowing insertion without being affected by the nut portion.
[Brief description of the drawings]
FIG. 1 shows the first embodiment, and is a perspective view in which a ventilation fan is arranged inside the left end of an indoor unit of an air conditioner.
FIG. 2 shows the first embodiment, and is a rear perspective view in a state in which a ventilation duct is arranged in a storage space on the back side of the box air passage of the indoor unit.
FIG. 3 is a diagram showing the first embodiment, and is a rear perspective view in a state in which refrigerant piping is arranged in a storage space on the rear side of the box air passage of the indoor unit.
FIG. 4 shows the second embodiment, and is a room of an air conditioner equipped with a ventilating blower provided with a reverse wind prevention in the vicinity of one end in the air passage formed by the left and right casings for the air passage construction of the ventilation blower It is sectional drawing of an inner unit.
FIG. 5 is a diagram showing the second embodiment, and is a partial detailed cross-sectional view in a state of being secured by a sensor fixture.
FIG. 6 is a diagram showing the third embodiment, and is a perspective view showing a connection state between a ventilation duct and a connection duct stored in a box air path rear surface storage space of the indoor unit.
FIG. 7 shows the fourth embodiment, and is a perspective view of a ventilation duct stored in a box air path rear surface storage space of the indoor unit.
FIG. 8 shows the sixth embodiment, and shows a state in which the length of the refrigerant pipe connected to the heat exchanger built in the indoor unit extends at least the lateral width of the indoor unit and is inserted through the pipe hole in the wall FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Indoor unit, 2 Piping storage space, 3 Ventilation fan, 4 Connection member A, 5 Ventilation duct A, 6 Refrigerant piping, 7 Right and left casing for air path structure, 8 Air path, 9 Forward / reverse switching fan DESCRIPTION OF SYMBOLS 10 Reverse wind prevention valve, 11 Drive motor for automatic opening / closing, 12 Gear train, 13 Position detection sensor, 14 Air purifying filter, 15 Insertion / extraction port, 16 Sensor attachment, 17 Ventilation duct B, 18 Connection member B, 19 Nail | claw, 20 fitting part, 21 Ventilation duct A comprised with the elastic bellows tube, 22 extension piping, 23 nut part, 24 piping hole, heat exchanger.

Claims (3)

The indoor unit body,
A ventilation blower that is housed in one side of the main body and supplies air to the room or exhausts the room air to the outside;
Refrigerant pipes and the like of a refrigeration cycle provided on the other side of the main body,
A ventilation duct connected to the ventilation fan;
A rear housing space provided on the rear surface of the main body and housing the refrigerant pipe or the ventilation duct, and the rear housing is provided when a wall pipe opening is provided facing one side of the main body. When the refrigerant pipe or the like is housed in a space and a wall pipe opening is provided facing the other side of the main body, the ventilation duct is housed in the rear housing space, and the ventilation fan Is stored in a side portion of the main body opposite to the refrigerant pipe, and the ventilation fan is configured as follows.
(A) The ventilation blower has a rotatable fan corresponding to the air supply or exhaust;
(B) One end of the air path of the ventilation blower is located in the lower part on the front side of the indoor unit body, and the other end of the air path is located in the back storage space of the indoor unit body;
(C) The indoor unit body is provided with a heat exchanger, and the ventilation fan is installed on the side portion adjacent to the anti-refrigerant piping side of the heat exchanger. The air conditioner according to claim 1, characterized by being configured ventilation duct to be accommodated in the rear housing space portion with a flexible bellows tube. Width longer than Satoshi of the body length of the refrigerant pipe, according to claim 1 or 2, wherein the connecting portion between the extension pipe connected to the refrigerant pipe is configured to exit the outdoor Air conditioner.

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