JPH04297731A - Integrated type air conditioner - Google Patents

Abstract

PURPOSE:To make the flow speed distribution uniform, and improve the heat exchange efficiency by providing a cushioning filter, for which fine slits or mesh are formed into a conical shape, between a heat exchanger on the indoor side and a sirocco fan on the indoor side. CONSTITUTION:By a negative pressure generated by a sirocco fan 4 on the indoor side, air passes through in the order of a suction grille 13, a cushioning filter 14 and a heat exchanger 3 on the indoor side, and flows into a suction port 5. Since the flow speed of air which passes through the heat exchanger 3 on the indoor side becomes larger as the location becomes close to the suction port 5, the excessive flow speed is reduced by pressure loss when the air passes through fine slits 16a of a cushioning filter 16. Also, by the conical shape of the cushioning filter 16, an auxiliary help to form an air passage from the vicinity of the heat exchanger 3 on the indoor side to the suction port 5 is done, and the flow speed around the heat exchanger 3 on the indoor side is improved, and the air speed distribution for the whole heat exchanger 3 on the indoor side can be unified.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an integrated air conditioner, and more particularly to wind speed distribution.

0002

2. Description of the Related Art FIG. 10 shows, for example,
This is a cross-sectional view of a conventional integrated air conditioner shown in Publication No. 2. In the figure, 1 is a main body of the integrated air conditioner, 2 is a fan casing that partitions the inside of this main body 1, and an indoor heat exchanger 3. , an indoor side 7 provided with a guide plate 6 having an indoor sirocco fan 4 and a suction port 5, a compressor 8, a blower motor 9,
It is partitioned into an outdoor side 12 provided with an outdoor propeller fan 10 and an outdoor heat exchanger 11. Reference numeral 13 denotes a suction grill provided on the front surface of the indoor side 7, which is equipped with a filter 14. Note that 15 is an indoor air outlet.

Next, the flow of air around the indoor heat exchanger of a conventional integrated air conditioner will be explained. Suction grill 1
3 passes through the indoor heat exchanger 3, flows into the suction port 5 of the indoor sirocco fan 4, and is led to the indoor air outlet 15 by the fan casing 2. FIG. 11 shows the wind velocity distribution of the conventional indoor air passage and heat exchanger. The flow velocity on the four axes of the indoor sirocco fan is the highest, and the further away from the suction port 5 the flow velocity decreases. It is on a declining trend.

Further, as a similar conventional example, there is a sectional view of an integrated air conditioner disclosed in Japanese Utility Model Application Laid-Open No. 60-77935 shown in FIG. In this second conventional example, outside air is introduced through a plurality of slits 1b provided on the side surface 1a of the main body, passes through an outdoor propeller fan 10, and an outdoor heat exchanger 11.
It is configured to form an air path that is discharged outside the main body 1 as heated air.

[0005]

[Problems to be Solved by the Invention] Since the conventional integrated air conditioner is configured as described above, when air flows from the heat exchanger to the suction port of the indoor sirocco fan, The flow velocity in the axial direction of the mouth increases,
Since the flow rate of air passing through the heat exchanger in areas far from the suction port is smaller, the efficiency of the heat exchanger as a whole becomes lower than the capacity that the heat exchanger can originally achieve, and it also becomes less efficient in low-temperature conditions. During operation, frost tends to form in the peripheral areas where the air flow rate is low, causing problems such as a decrease in cooling capacity due to a decrease in the amount of heat exchange due to frost.

Furthermore, in the second conventional integrated air conditioner, since the outdoor fan and the outdoor heat exchanger are close to each other,
Due to the swirling flow generated by the outdoor fan, the air volume increases at the outer periphery of the outdoor heat exchanger, and the center of the outdoor heat exchanger, which corresponds to the center of the outdoor fan, becomes a dead zone for the fan. , insufficient air flow,
There were problems such as a significant loss of heat exchange efficiency.

[0007] This first invention was made to solve the above-mentioned problems, and aims to improve the wind speed distribution of the indoor heat exchanger to achieve efficient operation.

[0008] The second invention aims to improve the wind speed distribution of the outdoor heat exchanger and to obtain an efficient integrated air conditioner.

[0009]

[Means for Solving the Problems] An integrated air conditioner according to the present invention includes a buffer filter in which fine slits or meshes are formed in a conical shape between an indoor heat exchanger and an indoor sirocco fan suction port. It was established.

The integrated air conditioner according to the present invention also includes a baffle plate that guides air swirling in the fan rotation direction to the center of the outdoor heat exchanger, and a baffle plate that is connected to the fan side of the outdoor heat exchanger. It is attached to the surface of the fin.

[0011]

[Function] The integrated air conditioner according to claim 1 of the present invention further reduces pressure loss by the buffer filter, and promotes flow from the peripheral area of the buffer filter to the suction port.
Uniform the air velocity distribution in the indoor heat exchanger.

Further, in the integrated air conditioner according to the second aspect of the present invention, heat exchange can be performed smoothly even when the temperature of the outside air is high due to the baffle plate provided on the outdoor heat exchanger.

[0013]

[Example] Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 16 denotes a conical buffer filter of the present invention, which is fixed in a slightly raised position on the axis of the indoor sirocco fan 4 on the fan side of the indoor heat exchanger 3.

FIG. 2 shows details of the buffer filter of the present invention. A number of slits 16a are provided concentrically in a conical shape. 17 is indoor heat exchanger 3
This is a clip for fixing to the pipes (
(not shown) is provided with a C-shaped recess 18.

Next, the operation and effect of the buffer filter will be explained. Due to the negative pressure generated by the indoor sirocco fan 4, air passes through the suction grill 13, the buffer filter 14, and the indoor heat exchanger 3 in this order, and flows into the suction port 5, but as described above in the conventional example. The flow rate of air passing through the indoor heat exchanger 3 increases as it approaches the suction port 5, but in this invention, the excessive flow rate is reduced due to pressure loss when passing through the fine slits 16a of the buffer filter 16. In addition, the conical shape of the buffer filter 16 serves to assist in forming an air flow path from the periphery of the indoor heat exchanger 3 to the suction port 5. The flow velocity in the peripheral area is improved, and the air velocity distribution throughout the indoor heat exchanger 3 can be made uniform as shown in FIG. 3.

Example 2. Embodiment 2 of the present invention will be described below with reference to the drawings. In the figure, 18 is an outdoor separator attached to the outdoor heat exchanger 11, and a bell mouth 1
9 is formed. 20 is a baffle plate, and the outdoor heat exchanger 1
It is attached to the surface of the fin on the outdoor side propeller fan 10 side of No. 1. Reference numeral 21 denotes a pair of clips integrally provided on the baffle plate 20, and the flat portion 20a of the baffle plate 20 is horizontal and inclined with respect to the surface of the fin 11a at an angle θ for attachment to a refrigerant pipe (not shown). It is formed at ゜.

The installation state of the air guide plate of the integrated air conditioner constructed as described above will be explained. Figure 5 shows outdoor heat exchanger 1
1 is a rear view of the arrangement of the air guide plate 20 attached to the main body 1 when viewed from the rear of the main body 1, and the air is directed toward the center of the outdoor heat exchanger 11 in opposition to the swirling flow A of air generated by the outdoor propeller fan 10. A pair of left and right air guide plates 20 are attached to guide the air.

Next, the operation will be explained. Air is sucked in through the slit 1b provided in the main body 1 by the outdoor propeller fan 10 driven by the motor 9, flows into the outdoor heat exchanger 11, undergoes heat exchange, and is discharged to the outside air. At this time, the air flow generated by the outdoor propeller fan 10 is a swirling flow A, so the air flow immediately after the outdoor propeller fan 10 rotates, and the center of the outdoor propeller fan 10 is a still area, and the outer periphery is Although the wind speed at the center of the outdoor propeller fan 10 is large and the wind speed at the center of the outdoor propeller fan 10 is small, some of the wind that hits the baffle plate 20 is transferred to the outdoor side for heat exchange due to the negative pressure in the stop area and the dynamic pressure of the swirling flow A. The pressure at the center of the outdoor heat exchanger 11 increases, the wind speed increases, the wind speed distribution is improved, and heat exchange can be performed efficiently.

Example 3. In addition, in the above-mentioned Example 2, a flat plate was used as the baffle plate 20, but as shown in FIG. , which produces similar effects.

Example 4. Furthermore, in the first embodiment, the buffer filter 16 has slits 16a formed therein, but even if the buffer filter 16 is configured with a mesh 16b as shown in FIG. 9, the same effect as described above can be obtained. .

[0021]

As described above, according to the invention of claim 1, a buffer filter having fine slits or meshes formed in a conical shape is provided between the indoor heat exchanger and the suction port of the indoor Sirotsko fan. Therefore, the flow velocity distribution in the indoor heat exchanger can be made uniform, and the heat exchange efficiency can be increased, resulting in an inexpensive, space-saving, high-performance integrated air conditioner.

According to the second aspect of the invention, there is also a baffle plate for guiding the air swirling in the direction of rotation of the fan to the center of the outdoor heat exchanger, and the baffle plate is attached to the surface of the fins on the fan side of the outdoor heat exchanger. Since the heat exchanger is installed, the heat exchange efficiency of the outdoor heat exchanger is improved, and an inexpensive and high-performance integrated air conditioner can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an integrated air conditioner according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a buffer filter, which is a main part of FIG. 1;

FIG. 3 is a schematic diagram illustrating the wind speed distribution in FIG. 1;

FIG. 4 is a cross-sectional view of essential parts showing an integrated air conditioner according to a second embodiment of the present invention.

FIG. 5 is a rear view of the integrated air conditioner of FIG. 5;

FIG. 6 is a front view showing the outdoor heat exchanger with the baffle plate attached according to the second embodiment of FIG. 5;

FIG. 7 is a perspective view showing a baffle plate according to a second embodiment of the present invention.

FIG. 8 is a front view showing an outdoor heat exchanger with a baffle plate attached according to a third embodiment of the present invention.

FIG. 9 is a perspective view showing a buffer filter according to a fourth embodiment of the present invention.

FIG. 10 is a sectional view of an integrated air conditioner showing a first conventional example.

11 is a schematic diagram illustrating the wind speed distribution in FIG. 10. FIG.

FIG. 12 is a sectional view of an integrated air conditioner showing a second conventional example.

[Explanation of symbols]

3 Indoor heat exchanger 4 Indoor sirocco fan 5 Suction port 10 Outdoor propeller fan 11 Outdoor heat exchanger 16 Buffer filter 20 Wind guide plate

Claims (2)

[Claims] Claim 1. An air conditioner integrally configured with an indoor heat exchanger, an outdoor heat exchanger, an indoor sirocco fan, a propeller fan, a motor, a compressor, and an expansion element, wherein the indoor heat exchanger and An integrated air conditioner characterized in that a buffer filter in which fine slits or meshes are formed in a conical shape is provided between the suction port of the indoor sirocco fan. Claim 2: In an integrated air conditioner consisting of a compressor, an indoor heat exchanger, an outdoor heat exchanger, an indoor fan, an outdoor fan, a motor, and an expansion element, air swirling in the direction of rotation of the fan is A baffle plate leading to the center of the outer heat exchanger,
An integrated air conditioner characterized in that this air guide plate is attached to the surface of the fins on the fan side of the outdoor heat exchanger.