JPS61159033A - Air conditioner - Google Patents

Abstract

PURPOSE:To contrive to reduce the leakage of operating noise from a blower and improve the working properties for maintenance and the like by a method wherein a blower unit is arranged at the upper part of an inlet grill, a blower is enabled to be taken out toward a room to be heat-exchanged via the inlet grill. CONSTITUTION:A blowing unit 10 is located at the directly lower part of a heat exchanger unit 5, those two units are communicated via a duct 9. The blowing unit 10 is composed of a casing 11 and a blower 12. The casing 11 is connected and fixed on a back wall (b) at the upper side of an opening part 3 and an inlet grill 4, the fixing position of the casing 11 is selected so that the fixing position does not opposed to the back opening part 3 and the grill 4. The lower side surface of the casing 11 is wholly opened, and a pair of separated guide plates 14, 14 are arranged on the back surface separating in the upper and down direction. A base plate 15 to which the blower 12 is mounted is engaged in freely slidable manner in up and down direction on those guide plates 14, 14, the base plate 15 is connected and fixed to the guide plates 14, 14 with a fixing screws 16, 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a so-called wall-embedded air conditioner, and particularly to improvements in the arrangement of a blower unit and its structure.

[Technical background of the invention and its problems]

In conventional air conditioners used in general households, the air conditioner unit is attached to the wall of a heat exchange room. That is, since the above-mentioned unit emits mist into the heat exchanged chamber, the design must be considered so as not to spoil the aesthetic appearance, and the area and depth dimensions tend to be reduced.

However, no matter how you change it, it will still be exposed to the heat exchanged chamber, so it has its own limits. Therefore, recently, an air conditioner unit was embedded in the wall of the heat exchange room.
Those with a secured interior were now adopted.

This is as shown in Fig. 8, where a blowout grille C is provided at the upper part of the front wall a of the heat exchange room S, a suction grille df is provided below this, and between the front wall a and the rear wall. A heat exchange unit e having a heat exchanger and a blower unit f having a blower are disposed in the heat exchange unit e and the blower unit f is connected through a duct Q.

A heat exchange unit e is disposed to face the blowout grille C, and a blower unit f is disposed to face the suction grille d. Therefore, the outlet grille C and the intake grille d are only exposed in the heat exchange chamber S in a vertically spaced apart state, and the aesthetic appearance is not spoiled. Moreover, since the blower unit f, which is a noise source, is buried in the wall, it is possible to reduce the operating noise to some extent. In addition, on the outside of the rear wall of the heat exchange room S, for example, an empty bowl, an outdoor unit (not shown) equipped with an air side heat exchanger, a pressure N machine, etc., which is connected to the heat exchanger via piping, is installed. be done.

However, since the blower unit f faces the suction grille d so as to be almost in contact with it, the operating noise of the blower continues to flow through the suction grille d into the heat exchange room, as shown by the broken line arrow in the figure. Although it is better than the unit installed with the unit exposed to the wall, it cannot be expected to have a large effect.

Moreover, the feeder ff1ed is the only drive part in each unit e, f, and is a member that requires maintenance.
It is fixed and fixed inside the unit f and cannot be taken out to the heat exchange room S. Therefore, the actual work had to be done while removing the suction grille d and looking into the opening, resulting in poor workability.

[Object of the Invention 1] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to further reduce the leakage of operating noise of the m feeder and to improve workability such as maintenance. The aim is to provide an improved air conditioner.

[Summary of the Invention] That is, the present invention provides a blowout grill on the upper part of the front wall of a heat exchange chamber, a suction grill in the lower part thereof, and a heat exchange unit and a blower unit in the gap between the front wall and the rear wall. , in which these units are connected through a duct, the blower unit comprises a casing disposed above the suction grill and connecting the duct, and a blower housed within the casing; This sending J
! This air conditioner is characterized in that one unit is housed in a casing so that it can be inserted and removed, and can be taken out into a heat exchange room via a suction grill as necessary.

(Example of the invention) Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, a is the front wall of the heat exchange chamber S, and b is a rear chamber provided with a predetermined gap from the front wall a. An opening 1 is provided in the upper part of the front wall a, and an outlet grille 2 is attached to the opening 1. An opening 3 is also provided directly below the blow-off grill 2, and a suction grill 4 is attached thereto. A filter (not shown) is attached to the suction grill 4 of the car.

A heat exchange unit 5 is disposed between a front wall a and a rear wall facing the blow-off grille 2. The heat exchange unit 5 includes a casing 6 that is attached and fixed to an auxiliary 1iat provided on the back side of the front wall a, and a heat exchanger 7 and a drain pan 8 that are housed inside the casing 6. Above opening 1
A part of the front surface of the casing 6 facing the casing 6 is open, and an opening 5a through which the duct 9 communicates is provided on the lower surface. A blower unit 10 is located directly below the heat exchange unit 5 and communicates with it via the duct 9.

The blower unit 10 includes a casing 11 and a blower 1.
2, the casing 11 is fixedly attached to the rear wall above the opening 3 and the suction grille 4, and a position not facing these is selected. To explain, as shown in FIGS. 3 and 4, an opening 13 is provided on the upper surface of the casing 11 to which the duct 9 is connected. The lower surface is entirely open, and a pair of guide plates 14, 14 spaced apart from each other are provided on the rear surface in the vertical direction. These guide plates 14.14 are provided with the above-mentioned air blower! A base plate 15 on which a guide plate 112 is disposed is fitted so as to be slidable in the vertical direction, and the base plate 15 is attached and fixed to the guide plate 14.14 by means of fixing screws 16.16. In addition, the base plate 15
A handle 17 is provided at the lower end. The blower 12 may be a commonly used blower that includes a fan 19 fitted onto the rotating shaft of a fan motor 18 and a fan case 20 that surrounds the fan 19 and has an opening in one direction and at the top. . It goes without saying that the top opening of the fan case 20 communicates with the top opening 13 of the casing 11.

Therefore, when the blower ``+2'' is driven and the refrigeration cycle is operated, the air in the heat-exchanged air S flows through the suction grille 4 to the front wall a and the rear wall, as shown by the white arrow in FIG. The air is sucked in between the air blower unit 10 and introduced into the duct 9. Roughly, the air is introduced from the duct 9 into the heat exchange unit 5, and heat exchange occurs when the air is passed through the heat exchanger 7.

Then, the air is blown out from the blow-off grille 2 into the air S to be heat exchanged, and this air conditioning effect is performed. While driving, air blower t112
generates operating noise, but a blower unit 10 is located above the suction grille 4 and is not opposed to each other. Moreover, the opening 3 for attaching the suction grill 4 and the lower opening of the casing 11 of the blower unit 10 are oriented in a direction perpendicular to each other, and the operational noise generated by the blower 12 is indicated by the broken line arrow in the figure. Since the noise comes out downward from the opening on the lower surface of the casing 11, the leakage of operating noise to the heat exchange target vS is extremely small and can be ignored.

Send Jill! 12, if maintenance is required, remove the suction grill 4 to expose the opening 1, without removing the fixing screws 16, 16 of the blower unit 10. After that, grip the handle 17 and slide the base plate 15 downward. As shown in FIGS. 2 and 4, the base plate 15 on which the blower 12 is disposed is lowered to face the opening 3. As shown in FIGS.

Therefore, from the opening 3 to the heat exchanged seedling S, the blower 12
It is sufficient to take out the entire base plate 15 and perform the necessary work there.

In addition, since the feeder 12 is heavy, the structure of the guide plate 14.14 and the base plate 15 should be devised so that the base plate 15 will not fall immediately even if the fixing screws 16.16 are removed, or other parts may be used. need to be added. Furthermore, in order to prevent the base plate 15 from collapsing when it is completely lowered, it is necessary to install a stopper or to set the amount by which the base plate 15 hooks onto the guide plates 14 and 14.

In addition, as shown in Figures 5 and 6, the heat exchanger □
Converter 7 may also be configured. In other words, this is fi > 7a
It consists of a first heat exchanger section 70A in which the pitch of the fins 7b is extremely small, and a second heat exchanger section 70B in which the pitch of the fins 7b is large. The first heat exchanger section 70 is located in the opening 1 of the front wall a.
A are arranged so as to face each other, and the second heat exchanger section 70B is arranged below the second heat exchanger section 70B, and a portion of each end plate 718, 71b is lengthened and connected by a fixing screw (not shown). Refrigerant distribution protruding from each heat exchanger section 70A, 70B! ! 7
2a and 72b are pressure reducers 74a connected by a T-shaped pipe connecting member 73 and connected thereto.

74b also communicates through a T-shaped pipe connecting member 75.

By performing the refrigeration cycle operation and driving the blower, heat exchange air is conducted through the heat exchanger 7. At this time, the fins 7a of the first heat exchanger section 70A
The pitch of the second heat exchanger section 70B is smaller than that of the second heat exchanger section 70B, and since they are arranged opposite to the opening 1, the heat exchanger sections 70A of each other have a smaller pitch than that of the second heat exchanger section 70B, and are arranged opposite to the opening 1. ,
The amount of ffl of the heat exchange air passing through 70B is approximately the same, and the heat exchange efficiency is good. In addition, the same figure (B) shows the air volume characteristics shown for reference, and in this case, the first heat exchanger section and the second
The fin pitch of the heat exchanger section is the same.

Then, the amount of air passing through the heat exchanger itself becomes uneven due to the secondary resistance of the heat exchanger itself, and the heat exchange efficiency becomes unbalanced.

It is also convenient to replace the heat exchanger 7 when it breaks down for some reason. That is, heat exchanger 7
are a first heat exchanger section 70A and a second heat exchanger section 70B,
! Since it is divided into = c2, it is only necessary to remove these connections and remove them from the opening 1 one after another. The opening 1 is the heat exchanger section 70A.

It is sufficient to ensure the minimum opening area from which the 70B can be taken out.

〔Effect of the invention〕

As explained above, according to the present invention, it is difficult for the operating noise of the transport J)Ill to leak into the heat exchange target, thereby providing a comfortable environment and improving the work efficiency such as maintenance of the transport J1 machine. This effect is achieved.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing the mounting structure of an air conditioner, and FIG. 2 is a first embodiment of the present invention.
A vertical cross-sectional view in a state different from that shown in the figure, Figure 3 is a perspective view of the main parts,
FIG. 4 is a partially omitted perspective view of the blower unit, FIGS. 5 to 7 show other embodiments of the present invention, and FIG. Figure 6 is an exploded perspective view of a heat exchanger, Figure 1 (A> is an air volume characteristic diagram, Figure (B) is a reference air volume characteristic diagram, and Figure 8 is an air conditioner showing a conventional example of the present invention). It is a vertical cross-sectional view of S... Heat exchanger, a... Front wall, b... Rear wall, 2.
...Blowout grill, 4...Suction grill, 9...Duct, 5...Heat exchange unit, 10...Blower unit,
11...Casing, 12...Blower is bad. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 8 Figure 1

Claims (1)

[Claims] A blow-off grill provided on the upper part of the front wall of the heat exchange room, a suction grill provided below the blow-off grill, and a heat exchange unit arranged in the gap between the front wall and the rear wall and communicating through a duct. and a ventilation unit, the ventilation unit comprising a casing arranged above the suction grill and to which the duct is connected, and a casing that is removably housed in the casing and can be inserted into the suction grill as needed. An air conditioner comprising: a blower that can be taken out to a heat exchange room through the air conditioner.