JPH1130433A - Outdoor machine for separate type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a one surface air sucking and exhausting type outdoor machine, permitting the free arrangement of an air suction port as well as an air outlet port on the same surface and prominent in static pressure characteristics while capable of securing a sufficient amount of ventilation by one set of fan, in an outdoor machine for a separate type air conditioner. SOLUTION: Air suction ports 8 are arranged at both sides of front surface of an outdoor machine main body (outer casing 7) and an air outlet port 6a is arranged at the central part of the front surface while a heat exchanger 3, an orifice 5 and one set of centripetal fan 1 are provided sequentially at the rear side of the air outlet port 6a to form a ventilating circuit wherein the inflow air of the air suction ports 8 is sucked through the outer peripheral part of the vanes 1a for the centripetal fan 1 and is sent out forwardly from the vanes 1a through the orifice 5 and the heat exchanger 3. According to this method, any suction space is not required whereby the outdoor machine can be installed so as to be contacted closely to a wall surface thereby permitting the realization of space saving property. On the other hand, sufficient amount of ventilation can be secured by one set of fan through the employment of the centripetal fan 1 and, further, the size of the outdoor machine, capable of outputting the same capacity, can be minimized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit of a separate type air conditioner equipped with a heat pump for cooling and heating.

[0002]

2. Description of the Related Art As shown in FIGS. 3 (a), 3 (b), and 3 (c), a conventional outdoor unit of a separate type air conditioner has a U-type heat exchanger 22, A motor 23, an outdoor fan 20 surrounded by an orifice 21 and a front grill 27 are sequentially arranged to form a blower circuit, and a control electrical unit 25 and a compressor 26 are arranged above and below the outdoor fan 20. The motor 23 is generally configured to be fixed by a motor support 24.

[0003] Other than the above, for example,
JP-A-5-215367, JP-A-3-21392
No. 8 and Japanese Utility Model Application Laid-Open No. 62-100425 have been proposed.

[0004] That is, Japanese Unexamined Patent Publication No. Hei 5-21567 discloses a one-sided suction / exhaust outdoor unit using a cross flow fan, which has an outlet at the upper part and a suction port at the lower part, and a heat exchanger downstream of the inlet. , A cross-flow fan, and a blowout port. Japanese Patent Application Laid-Open No. Hei 3-213928 has a configuration in which an air inlet and an air outlet are provided on the upper and lower sides of the same surface, and a heat exchanger and a blower are separately arranged on the upper and lower sides in the outdoor unit main body. . Further, Japanese Unexamined Utility Model Publication No. 62-100425 discloses a sirocco fan incorporated in a scroll casing of an outdoor unit.
It is configured to perform one-sided suction / exhaust using a single piece.

[0005]

However, in the configuration of the conventional outdoor unit of the separate type air conditioner described above,
The wind is blown through the outdoor unit in the order of the heat exchanger 22, the outdoor fan 20, and the front grill 27 as shown by arrows in FIG. A blow-out space is required, and the outdoor unit cannot be installed in close contact with the wall of the building, which requires a considerable installation space. Therefore, in a condominium, an outdoor unit may not be installed in a corridor or the like, and there is a problem that the installation of the outdoor unit is limited.

[0006] For this reason, the above-mentioned Japanese Patent Application Laid-Open No. Hei 5-21567 is disclosed.
And Japanese Unexamined Patent Publication (Kokai) No. 3-213928,
Japanese Patent Application Laid-Open No. 100-42567 and others have proposed a device capable of one-sided air intake and exhaust. However, in Japanese Patent Application Laid-Open No. Hei 5-21567, an optimal position configuration of a heat exchanger and a cross flow fan has been proposed. Therefore, the position of the outlet and the inlet is also fixed unambiguously, so that the upper and lower portions are the outlet and the inlet, and the degree of freedom in arrangement is not sufficient. In addition, the cross flow fan itself has a weak static pressure characteristic, causes surging even with a small load change, and has a problem in that there are many performance problems when used in an outdoor unit exposed to frost.

[0007] In the device disclosed in Japanese Patent Application Laid-Open No. Hei 3-213928, since the heat exchanger and the blower are arranged separately at the top and bottom inside the outdoor unit main body, the size of the outdoor unit for achieving the same capacity is inevitably increased. I had the problem of getting bigger.

Further, in Japanese Unexamined Utility Model Publication No. Sho 62-100425, since a sirocco fan is used as a blower, a sirocco fan, which is a centrifugal blower, requires a scroll casing, which increases the number of parts and increases the cost. . In addition, the sirocco fan alone has a problem in that at least two fans are required in order to secure a required air volume as an outdoor unit of an air conditioner with a small air volume as a blowing performance, and this also increases the cost.

The present invention has been made to solve the above-mentioned problems, and has a single-sided suction / exhaust type installation which has a degree of freedom in arrangement of a suction port and a discharge port, has a good static pressure characteristic, and can secure a sufficient air volume even with one blower. It is an object of the present invention to provide an outdoor unit of a separate type air conditioner with good performance.

[0010]

In order to achieve the above object, an outdoor unit of a separate type air conditioner according to the present invention is provided with suction ports on at least two opposite sides or two adjacent sides. Inside the box-shaped outdoor unit main body having an outlet at the center of the same surface, an inlet, a centripetal fan, an orifice surrounding the centripetal fan, a heat exchanger, and a front grill are arranged in this order from the upstream side of the wind. This is to form a blower circuit.

With the above structure, when the centripetal fan is rotating and performing a blowing operation, air is sucked from at least two opposite sides or two adjacent sides of the suction port, and the centripetal fan, in order, is located downstream of the centrifugal fan. The air is blown out from the outlet having the front grill, which is arranged on the same plane as the orifice, heat exchanger, and suction port. Therefore, the outdoor unit can be installed in close contact with a wall, etc. Can be installed freely. In addition, by using the centripetal fan behind the heat exchanger, a sufficient air volume performance can be obtained with one blower, and a compact and inexpensive outdoor unit can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a box-type having a suction port provided at least on two opposing sides or two adjacent sides, and having a blow-out port at the center of the same plane as the suction port. Inside the outdoor unit main body, the air intake circuit, the centripetal fan, the orifice surrounding the centripetal fan, the heat exchanger, and the front grille are arranged in this order from the upstream side of the wind to form a blower circuit. .

According to a second aspect of the present invention, the suction port is provided on both sides of the front surface of the outdoor unit main body, the outlet is provided at the center of the front surface, and one centripetal fan is provided. Air drawn from the outer periphery of the
It blows out through the orifice and the heat exchanger in front of the blade.

According to a third aspect of the present invention, in the outdoor unit, a control electrical unit and a compressor are arranged in a portion that does not hinder the flow of wind.

According to a fourth aspect of the present invention, in the outdoor unit, a control electrical unit is provided above the centripetal fan.
A compressor is arranged below a centripetal fan.

According to a fifth aspect of the present invention, in the outdoor unit, a plurality of radial vanes are arranged so as to surround the windward outer peripheral portion of the centripetal fan.

According to the present invention, the intake and exhaust ports of the air inlet and outlet blower circuits are arranged on the same surface of the outdoor unit body, that is, in a specific arrangement, the inlet ports are provided on both sides of the front surface of the outdoor unit body. Since the mouth is located at the center of the front surface, the conventional suction unit does not require a suction space, and the outdoor unit can be installed in close contact with the wall surface of the building, thereby realizing space saving.

In particular, by using a centripetal fan,
The centripetal fan itself has a static pressure characteristic that can generate a sufficient air volume against the load on the air conditioner, and the noise level is low, so it is possible to improve the performance more than the conventional cross flow fan By using only one centripetal fan together with the orifice, the required air volume as the outdoor unit of the air conditioner can be covered, so that the required number of blowers and the number of components involved are reduced, and the cost can be reduced. Also,
Even if the centripetal fan is provided behind the heat exchanger, the entire surface can be sucked and exhausted, so that the space efficiency is high, and the size of the outdoor unit providing the same capacity can be minimized.

Also, by arranging components so as not to obstruct the blower circuit, for example, by arranging a control electrical unit above the centripetal fan and a compressor below the centripetal fan, the blowing characteristics of the centripetal fan can be improved. It is possible to obtain a sufficient air volume characteristic with low noise without being hindered, and it is possible to minimize the size of the outdoor unit by optimizing the housing of the electrical unit and the compressor.

Further, by arranging a plurality of radial vanes so as to surround the windward outer periphery of the centripetal fan, frost formation proceeds on the heat exchanger of the outdoor unit during the heating operation of the air conditioner, thereby causing centripetal centrifugation. When the load on the fan increases, the static pressure characteristics of the centripetal fan increase due to the action of the stationary blade. Therefore, a sufficient air volume can be provided to the load of the outdoor unit, and a high heating capacity can be obtained.

[0021]

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) A first embodiment of the present invention is shown in FIG.
A description will be given along (b) and (c). 1A is a cross-sectional view of the outdoor unit of the separate type air conditioner as viewed from above, FIG. 1B is a cross-sectional view of the outdoor unit as viewed from the front, and FIG.
FIG. 4 is a cross-sectional view of the outdoor unit as viewed from the side.

In FIG. 1, an outer box 7 serving as an outdoor unit main body is provided with suction ports 8 provided with suction grills 9 on two opposing sides, that is, on both sides of the front face of the outer box 7. It has an outlet 6a provided with a front grille 6 in the center. Then, from the upstream side of the wind flow inside the outdoor unit main body, a suction port 8, a centripetal fan 1 having a plurality of blades 1 a arranged in a central portion inside the outdoor unit main body, an orifice 5 surrounding the centripetal fan 1, an orifice 5 The I-type heat exchanger 3 is arranged on the front surface of the centripetal fan 1 at the front part (downwind side), and the outlet 6a provided with the front grille 6 is arranged in front of the heat exchanger 3 in order. The motor 4 for driving the centripetal fan 1 is supported by a motor support 12 on the back.

In the above configuration, when the motor 4 operates and the centripetal fan 1 rotates, air is sucked from the outer periphery of the blade 1a of the centripetal fan 1 through the suction ports 8 on both front sides of the outer box 7, and forward from the center. This produces a blowing action.
Therefore, it is possible to achieve one-sided air intake and exhaust, and since there is no need for a rear suction space as in the related art, the outdoor unit can be installed in close contact with the wall surface of the building, and space saving can be realized. Therefore, in an apartment, the outdoor unit can be freely installed in a corridor by closely adhering to the wall surface of the apartment.

In the one-sided air intake / exhaust configuration, in the case of using the above-mentioned conventional cross flow fan, the outdoor pressure unit has a weak static pressure characteristic of the cross flow fan itself, is subject to surging even with a small load change, and is exposed to frost. There are many problems as an air conditioner because it reduces the heating low-temperature performance.

However, the centripetal fan 1 of the present invention has a static pressure capable of generating a sufficient air volume against the load applied to the air conditioner and has a low noise level. Is better than using.

Further, in the conventional apparatus using merely an axial blower, it is necessary to divide the heat exchanger and the blower into upper and lower parts in the main body of the outdoor unit in order to perform one-sided suction and exhaust, and the same performance is obtained. Therefore, the size of the outdoor unit is inevitably increased.

On the other hand, in the configuration using the centripetal fan 1 of the present invention, even if it is provided behind the heat exchanger 3, the entire surface can be sucked and exhausted, so that the outdoor unit having good space efficiency and the same capacity can be reduced in size. Can be minimized.

Further, in the conventional one-sided intake / exhaust configuration using a sirocco fan, a scroll casing is necessarily required, and two sirocco fans are required in order to produce a required air volume as an outdoor unit of an air conditioner. The cost is high.

However, in the configuration using the centripetal fan 1 of the present invention, one-sided intake / exhaust can be performed only by providing one centripetal fan 1 having several blades 1a surrounded by the orifice 5 behind the heat exchanger 3. Since the required air volume can be supplied, the space efficiency is good, and the size of the outdoor unit providing the same capacity can be minimized, and the number of parts for the blower is small and the cost is low.

(Embodiment 2) FIG. 1 shows a second embodiment of the present invention.
This will be described with reference to (b) and (c).

As shown in the figure, an electrical component (electric component) 10
The compressor 11 is arranged in a portion that does not hinder the flow of air (a portion that is not a blower circuit). That is,
In this embodiment, a control electrical component 10 is provided above the centripetal fan 1.
The compressor 11 is arranged below the centripetal fan 1.

In the above configuration, when the centripetal fan 1 is rotating and performing a blowing operation, the electrical component 10 and the compressor 11
Since the air blowing action is not hindered, the air blowing characteristics of the centripetal fan 1 are not hindered, and a sufficiently large air volume characteristic with low noise can be realized. In addition, the electrical component 10 and the compressor 1 are provided above and below the centripetal fan 1.
By arranging 1, the storability in the outer box 7 becomes the most reasonable, and the size of the outdoor unit can be minimized.

(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIGS. 2 (a), 2 (b) and 2 (c).

As shown in FIG. 1, a plurality of radial stationary blades 2 are arranged on the outer periphery of the centripetal fan 1 on the windward side to surround the centripetal fan 1 to form a blower circuit.

During the heating operation of the air conditioner, frost forms on the heat exchanger 3 of the outdoor unit, and the centrifugal fan 1
Load increases. In this case, with the above configuration, the static pressure of the centripetal fan 1 is increased by the action of the stationary blade 2, so that a sufficient air volume can be provided to the load of the outdoor unit and a high heating capacity can be obtained.

[0036]

As is clear from the description of the above embodiment,
The first and second aspects of the present invention provide at least two opposing elements.
A suction port is provided on one side or two adjacent sides, and a discharge port is provided in the center of the same plane as the suction port. That is, in a specific arrangement, the suction port is disposed on both sides of the front face, and the discharge port is disposed on the center of the front face. Inside the box-shaped outdoor unit main body, a suction circuit, one centripetal fan, an orifice surrounding the centripetal fan, a heat exchanger, and a front grill are sequentially arranged from the upstream side of the wind flow to form a blower circuit. It is like that.

[0037] With this configuration, one-sided intake and exhaust can be realized, and as a result, since no suction space is required, the outdoor unit can be installed in close contact with the wall surface of the building, and space saving can be realized. Therefore, in an apartment, the outdoor unit can be freely installed in a corridor by closely adhering to the wall surface of the apartment.

In particular, the centripetal fan has a static pressure characteristic capable of generating a sufficient air flow against the load applied to the air conditioner and has a low noise level, so that the performance thereof is improved more than the conventional cross flow fan. With only one centripetal fan together with the orifice, the required air volume as the outdoor unit of the air conditioner can be met. For this reason, the number of necessary blowers and the number of parts required therewith can be reduced, and the cost can be reduced. In addition, even if a centripetal fan is provided behind the heat exchanger, the entire surface can be sucked and exhausted, so that the space efficiency is good and the size of the outdoor unit that provides the same capacity can be minimized.

According to the third and fourth aspects of the present invention, in the outdoor unit, an electric component and a compressor are arranged at a portion that does not hinder the flow of air, that is, at the upper and lower portions of the centripetal fan. The airflow characteristics of the air conditioner are not hindered, sufficient airflow characteristics can be obtained with low noise, and the housing of the electrical unit and the compressor is most rational and the size of the outdoor unit can be minimized.

According to a fifth aspect of the present invention, in the outdoor unit,
A plurality of radial vanes are arranged around the windward outer periphery of the centripetal fan so as to surround it. During the heating operation of the air conditioner, frost accumulates on the heat exchanger of the outdoor unit and causes centripetal movement. When the load on the fan increases, the static pressure characteristics of the centripetal fan increase due to the action of the stationary blade. Therefore, a sufficient air volume can be provided to the load of the outdoor unit, and a high heating capacity can be obtained.

[Brief description of the drawings]

1A is a cross-sectional view of an outdoor unit of a separate type air conditioner according to first and second embodiments of the present invention as viewed from above, and FIG. 1B is a cross-sectional view of the outdoor unit as viewed from the front. Figure (c) is a cross-sectional view of the outdoor unit viewed from the side.

2A is a cross-sectional view of the outdoor unit of the separate type air conditioner according to the third embodiment as viewed from above, FIG. 2B is a cross-sectional view of the outdoor unit as viewed from the front, and FIG. Cross-sectional view of the outdoor unit viewed from the side

3A is a cross-sectional view of the outdoor unit of the conventional separate type air conditioner as viewed from above, FIG. 3B is a cross-sectional view of the outdoor unit as viewed from the front, and FIG. 3C is a side view of the outdoor unit. Cross section viewed from the direction

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Centripetal fan 1a Blade 3 Heat exchanger 5 Orifice 6 Front grille 6a Outlet 7 Outer box (outdoor unit main body) 8 Inlet 10 Electrical equipment (electrical part) 11 Compressor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Sugio 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] An inside of a box-shaped outdoor unit body having suction ports provided at least on two opposite sides or two adjacent sides, and having a blow-out port at the center of the same surface as the suction port.
An outdoor unit of a separate type air conditioner in which the suction port, a centripetal fan, an orifice surrounding the centripetal fan, a heat exchanger, and a front grill are sequentially arranged from an upstream side of the wind to form a blower circuit. 2. The suction unit according to claim 1, wherein a suction port is disposed on both sides of a front surface of the outdoor unit main body, and a discharge port is disposed at a center portion of the front surface, and a heat exchanger, an orifice, and one centripetal fan are sequentially provided behind the discharge port. An outdoor unit of a separate type air conditioner, wherein an inflow air from a mouth is sucked from an outer peripheral portion of a blade of the centripetal fan, and a blower circuit is formed in front of the blade through the orifice and the heat exchanger. 3. The outdoor unit of a separate type air conditioner according to claim 1, wherein an electric control unit and a compressor are arranged in a portion which does not hinder the flow of the wind. 4. The outdoor unit of a separate type air conditioner according to claim 1, wherein a control electrical unit is arranged above the centripetal fan and a compressor is arranged below the centripetal fan. 5. The outdoor unit of a separate type air conditioner according to claim 1, wherein a plurality of stationary blades are radially arranged on the windward outer peripheral portion of the centripetal fan in the blower circuit.