JP2000046375A - Outdoor unit and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit and an air conditioner provided with an outdoor heat exchanger which does not receive deformation due to a pedestal even when receiving a vertical load. SOLUTION: An outdoor unit 20 is provided with an outdoor heat exchanger 20b that is arranged so as to cover a rear face and a side face of an equipment body 20a and that is constituted with a refrigerant piping 1 having corrugated fins 2 on the circumference thereof. A pedestal 6 is provided on a lower end part of the outdoor heat exchanger 20b, and the outdoor heat exchanger 20b is placed via the pedestal 6 on a projected pedestal 5 formed on a floor face 4 of the equipment body 20a. Thus, there is no situation in which the lower end of the outdoor heat exchanger 20b is deformed, and there is an effect that deformation of an outer plate or that kind such as a top board 8 constituting the equipment body 20a is avoided. A plurality of drain holes that are not shown in the drawings are formed on the face of the pedestal 6, and the water that is drained at the time of the defrost operation is led to the outside of the equipment body 20a via the drain holes and a space 7 without stagnation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for providing a comfortable indoor environment by heating or cooling.

[0002]

2. Description of the Related Art An air conditioner is composed of two major components, an indoor unit and an outdoor unit. Each of these is provided with an indoor heat exchanger and an outdoor heat exchanger that perform heat exchange between the refrigerant and the indoor air and between the refrigerant and the outdoor air.

[0003] These indoor heat exchangers and outdoor heat exchangers are:
In addition, components such as a compressor and an expansion valve are added to constitute a refrigerant circuit. Refrigerant physically circulates through this circuit, and follows the circulating process of changing the state of high-temperature and high-pressure gas, low-temperature and low-pressure gas, high-temperature and high-pressure liquid, and low-temperature and low-pressure liquid. . The cooling and heating of the room is directly realized by heat exchange between the refrigerant in the indoor heat exchanger and room air.

[0004] Heating is realized by sending a gaseous refrigerant converted into a high-temperature and high-pressure gas by a compressor to an indoor heat exchanger and exchanging heat between the refrigerant and indoor air. Cooling also sends high-temperature and high-pressure gaseous refrigerant to an outdoor heat exchanger and exchanges heat with outdoor air to form a high-temperature and high-pressure liquid refrigerant.
This is further realized by passing the gas through an expansion valve to lower the temperature and pressure and sending it to the indoor heat exchanger, and performing heat exchange between the refrigerant and room air.

The outdoor heat exchanger is arranged so as to cover the rear and side surfaces of an outdoor unit housing for accommodating the compressor and the like, and has a meandering refrigerant pipe having corrugated fins around it. It is in the form of being arranged. That is, the refrigerant pipe is bent so as to cover the rear and side surfaces of the casing. A plurality of corrugated fins are provided perpendicular to the arrangement of the meandering refrigerant pipes.

[0006]

The installation of the outdoor heat exchanger in the housing is as shown in FIG. That is, the lower end of the outdoor heat exchanger 300 is installed on a plurality of projecting pedestals 204 formed on the floor 203 along the rear surface 201 and the side surface 202 of the housing 200. Therefore, a gap 400 is formed between the floor 204 of the housing 200 and the lower end of the outdoor heat exchanger 300 between the respective pedestals 204. This gap 4
00 is necessary for the air conditioner to guide water and the like discharged at the time of defrosting the outdoor heat exchanger to the outside during the heating operation.

However, in the outdoor heat exchanger 300, the corrugated fin 301 directly contacts the pedestal 204. By the way, the corrugated fin 301
Usually, aluminum or the like is used as a lightweight material having a large thermal diffusivity. This is mainly due to the consideration of the improvement of the heat exchange efficiency, but from this, the fins 301 do not always have sufficient mechanical strength. Therefore, when the outdoor heat exchanger 300 receives a load in the vertical direction, the corrugated fin 301 is easily deformed as shown in FIG. This can occur, for example, only by mounting some heavy object on the top plate 205 (see FIG. 5).

In the above state, the gap 400 is crushed and the above-described drainage is not performed, and the deformation of the corrugated fins 301 causes the performance of the outdoor heat exchanger 300 to deteriorate. is expected. It is also conceivable that the outer panels of the housing 200 such as the top panel 205 are deformed.

The present invention has been made in view of the above circumstances, and has as its object to provide an outdoor unit having an outdoor heat exchanger that is not deformed by a pedestal even when subjected to a vertical load. An object of the present invention is to provide an air conditioner.

[0010]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the outdoor unit according to claim 1 includes an outdoor heat exchanger, a compressor that sends a high-temperature and high-pressure gas refrigerant to the outdoor heat exchanger or the indoor heat exchanger, the outdoor heat exchanger, and the compressor. It is characterized by comprising a housing to be accommodated, and a pedestal provided at a contact portion between the outdoor heat exchanger and the housing to protect a contact portion on the side of the outdoor heat exchanger.

[0011] According to this, since the receiving base is provided at the contact portion between the outdoor heat exchanger and the housing, the above-described deformation of the outdoor heat exchanger does not occur. The function of maintaining the performance of the outdoor heat exchanger and preventing deformation of the housing outer panels can be obtained.

In the outdoor unit according to a second aspect of the present invention, the receiving stand is provided with a plurality of drain holes.

According to this, the water discharged from the outdoor heat exchanger during the defrosting operation or the like does not accumulate in the cradle,
It will be discharged to the outside immediately.

According to a third aspect of the present invention, there is provided an air conditioner comprising: an outdoor heat exchanger; a compressor for sending a high-temperature and high-pressure gas refrigerant to the outdoor heat exchanger or the indoor heat exchanger; An outdoor unit including: a housing that houses the compressor; a pedestal provided at a contact portion between the outdoor heat exchanger and the housing to protect a contact portion on the outdoor heat exchanger side; And an indoor unit having an indoor heat exchanger for exchanging heat between the indoor air and the refrigerant supplied from the outdoor unit. It is characterized by.

This air conditioner can be said to include the outdoor unit according to the first aspect. In other words, it can be said that the present air conditioner is an air conditioner having the function of maintaining the performance of the outdoor heat exchanger and preventing the deformation of the casing outer plates without the deformation of the outdoor heat exchanger caused by the cradle.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing the overall configuration of the air conditioner. The air conditioner includes an indoor unit 10 and an outdoor unit 20. The indoor unit 10 and the outdoor unit 20 are connected by a refrigerant pipe 30 through which the refrigerant flows, an electric wiring (not shown), and the like. Two refrigerant pipes 30 are provided, and the refrigerant flows from the indoor unit 10 to the outdoor unit 20 on one side and flows from the outdoor unit 20 to the indoor unit 10 on the other side.

The indoor unit 10 has a base 11 and a front panel 12 integrally formed. The base 11 is provided with various devices such as a plate fin tube type indoor heat exchanger and a substantially cylindrical cross flow fan (fan). These are not both shown. The base 11 has another indoor unit 10
And a control unit 11a configured of various electric circuit elements for performing operation control and the like relating to the operation. The control unit 11a is provided with an appropriate indicator 11b for displaying an operation status and an error mode. The indicator 11b can be checked from the outside by a see-through portion 12a provided on the front panel 12.
A mounting plate 13 is provided behind the base 11,
This makes it possible to install the indoor unit 10 on a wall or the like in the room.

The front panel 12 has a suction grill (suction port) 12b formed on each of the front and top surfaces. The indoor air is drawn into the indoor unit 10 from these directions by the suction grills 12b. Incidentally, an air filter 12c is provided behind the suction grill 12b, and functions to remove dust such as sucked air. Also, on the front panel 12,
An air outlet 12d is formed below the air outlet, from which warmed or cooled air is blown out. In addition, this air suction and air blowing
This is performed by rotating the cross flow fan.

The outdoor unit 20 includes an outdoor heat exchanger 20b, a propeller fan (outdoor fan) 20 in a housing 20a.
c, a compressor 20f, a control box 20g, and the like. The outdoor heat exchanger 20b is configured by a refrigerant pipe having a large number of corrugated fins around it, and realizes heat exchange between the refrigerant and outdoor air. The propeller fan 20c has a wind that flows from the back to the front in the housing 20a (that is, the wind is generated by the outdoor heat exchanger 2).
0b), so that new air is always taken into the housing 20a to improve the heat exchange efficiency.

A finger 20d and a fan guard 20e are provided on the surface of the housing 20a where the outdoor heat exchanger 20b and the propeller fan 20c face the outside. The fingerings 20d are provided so that the corrugated fins are not damaged by an unexpected impact from the outside. Similarly, the fan guard 20e is provided for the purpose of protecting the propeller fan 20c from external impact similarly and for the purpose of preventing dust and the like contained in the outside air from being taken into the housing 20a. Things.

The compressor 20f supplies a low-temperature low-pressure gas refrigerant to the compressor 20f.
The refrigerant is converted into high-temperature and high-pressure gas refrigerant and discharged, and plays the most central role in the components constituting the refrigerant circuit. Incidentally, the refrigerant circuit is the compressor 20f
In addition to the above, the indoor heat exchanger and the outdoor heat exchanger 20
b, a refrigerant pipe 30, an expansion valve, and a four-way valve (the expansion valve and the four-way valve are not shown) for regulating the flow direction of the refrigerant.
This is a circuit that circulates between zero and zero.

The control box 20g controls the operation of the propeller fan 20c, the compressor 20f, and other various devices provided in the outdoor unit 20, and is made up of various electric circuit elements.

The outdoor unit 20 includes, in addition to the above, a housing 2
A pedestal 20h is provided to support Oa and to avoid a bad disturbance such as vibration. The wall of the housing 20a close to the compressor 20f has a removable panel 2 for performing maintenance and the like of the compressor 20f.
0i.

Hereinafter, the operation of the air conditioner having such a configuration will be described for each of the heating operation and the cooling operation. First, during the heating operation, the refrigerant converted into a high-temperature and high-pressure gas by the compressor 20f is supplied to the refrigerant pipe 3
0, and is sent to an unillustrated indoor heat exchanger in the indoor unit 10. In the indoor unit 10, heat is given to the room air taken in from the suction grill 12b by the cross flow fan from the high-temperature and high-pressure gas refrigerant passing through the indoor heat exchanger. This allows the front panel 1
Warm air is blown out from the outlet 12d below 2. At the same time, the high-temperature and high-pressure gas refrigerant is condensed and liquefied in the indoor heat exchanger and becomes a high-temperature and high-pressure liquid refrigerant.

The high-temperature and high-pressure liquid refrigerant is supplied to the refrigerant pipe 3 again.
0 through the outdoor heat exchanger 20 in the outdoor unit 20
b, the high-temperature and high-pressure liquid refrigerant passing through the outdoor heat exchanger 20b deprives the new outdoor air taken into the housing 20a by the propeller fan 20c of heat. As a result, the high-temperature and high-pressure liquid refrigerant evaporates and becomes a low-temperature and low-pressure gas refrigerant. This is sent to the compressor 20f again, and the above process is repeated.

During the cooling operation, the refrigerant flows through the refrigerant circuit in a direction opposite to the above. That is, the refrigerant converted into a high-temperature and high-pressure gas by the compressor 20f passes through the refrigerant pipe 30 and is sent to the outdoor heat exchanger 20b, where the outdoor air is given heat and condensed and liquefied to become a high-temperature and high-pressure liquid refrigerant. This high temperature and high pressure liquid refrigerant
After passing through an expansion valve (not shown), it becomes a low-temperature and low-pressure liquid refrigerant,
It is sent to the indoor heat exchanger (not shown) again through the refrigerant pipe 30. Here, the low-temperature and low-pressure liquid refrigerant takes heat from the room air to cool the room air, and the refrigerant itself evaporates and becomes a low-temperature and low-pressure gas refrigerant. This is again the compressor 20
f and the above process is repeated.

These operations are controlled by the control unit 11a housed in the indoor unit 10 and the control box 20g housed in the outdoor unit 20 working together.

Hereinafter, the characteristic portions of the present invention will be described. As described above, the outdoor unit 20 has the configuration shown in FIG.
As shown in FIG. 1, an outdoor heat exchanger 20b constituted by a refrigerant pipe 1 provided with corrugated fins 2 around it is provided. The refrigerant pipe 1 is arranged in a meandering manner so as to cover the front surface and one side surface of the housing 20a. The corrugated fins 2 are arranged perpendicularly to the meandering refrigerant pipe 1, that is, in a vertical position, with a gap 3 as a cycle while providing a gap 3. In the gap 3, wind is generated by the rotation of the propeller fan 20c described above. Thereby, the heat exchange efficiency between the refrigerant and the outdoor unit in the outdoor heat exchanger 20b is improved.

The outdoor heat exchanger 20b is mounted on a plurality of protruding pedestals 5 formed on the floor 4 of the housing 20a. By the way, the outdoor heat exchanger 20
A receiving base 6 is provided at a contact portion between the b and the protruding pedestal 5 in the housing 20a. That is, the pedestal 6 has a role of protecting the lower end of the outdoor heat exchanger 20b, that is, the contact portion of the outdoor heat exchanger 20b with the protruding pedestal 5.

The cradle 6 is, as shown in FIGS. 2 and 3,
It has an L-shaped gutter-like configuration that matches the external shape of the outdoor heat exchanger 20b. Further, a plurality of drain holes 6a are formed on the surface of the cradle 6. These drain holes 6a are provided to guide water discharged from the outdoor heat exchanger 20b to the outside during a defrosting operation or the like. This water is discharged to the outside of the housing 20a from the gap 7 shown in FIG. 2, that is, the gap 7 formed between the floor surface 4 and the back surface of the receiving base 6 because the protrusion base 5 is provided. Will be done.

In the outdoor unit 20 having the above structure, the lower end of the outdoor heat exchanger 20b is not deformed by the force received from the protruding base 5. Therefore, the outdoor heat exchanger 20b can exhibit its performance stably. Further, the fact that the outdoor heat exchanger 20b is not deformed does not deform the outer plates such as the top plate 8 constituting the housing 20a.

Further, since the gap 7 is not crushed by the presence of the pedestal 6 and the drainage hole 6a is formed in the pedestal 6, the water discharged from the outdoor heat exchanger 20b is formed. Can be guided to the outside of the housing 20a without delay.

In the above embodiment, the receiving table 6 is defined as an L-shaped gutter, but the present invention is not particularly limited to this. For example, as shown in FIG. 4A, a short gutter-like member may be used as the receiving base 6 '. In this case, the receiving base 6 ′ is provided so as to correspond to the location of the protruding pedestal 5, as shown in FIG.
The lower end of the outdoor heat exchanger 20b is locally protected. It is clear that the above effects can be enjoyed also by this.

The indoor unit 10 and the outdoor unit 2
The specific configuration of 0 is not particularly limited to the above embodiment. That is, the present invention is applicable to any type of air conditioner as long as the air conditioner includes an indoor unit, an outdoor unit, and an outdoor heat exchanger in the outdoor unit.

[0035]

As described above, in the outdoor unit according to the first aspect of the present invention, the receiving portion for protecting the contact portion on the outdoor heat exchanger side is provided at the contact portion between the outdoor heat exchanger and the housing. This prevents the outdoor heat exchanger from being deformed.
Therefore, stable performance of the outdoor heat exchanger can be expected. Also, there is no possibility of causing deformation of the outer plates constituting the housing.

[0036] In the outdoor unit according to the second aspect of the present invention, since a plurality of drain holes are formed in the pedestal, water discharged from the outdoor heat exchanger during defrosting or the like is collected in the pedestal. It is possible to quickly lead the case to the outside.

Further, the air conditioner according to the third aspect can be said to be provided with the outdoor unit, so that the effect can be enjoyed as it is. That is, it can be said that the present air conditioner is an air conditioner that can exhibit the stable performance of the outdoor heat exchanger and the effect of avoiding the deformation of the outer panels constituting the housing. In addition, since a drain hole is formed in the cradle, it can be said that the water discharged from the outdoor heat exchanger is an air conditioner that can be quickly guided to the outside of the outdoor unit.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of an air conditioner.

FIG. 2 is an explanatory diagram mainly showing the outdoor heat exchanger shown in FIG.

FIG. 3 is a perspective view showing a receiving base provided in the outdoor heat exchanger shown in FIG.

FIGS. 4A and 4B show another embodiment different from the cradle shown in FIG. 3, wherein FIG. 4A is a perspective view of the cradle of the other embodiment, and FIG. FIG. 5 is an explanatory view showing a situation where the device is mounted on a container.

FIG. 5 is an explanatory diagram showing a conventional installation state of an outdoor heat exchanger in a housing.

FIG. 6 is an explanatory diagram showing, in an enlarged manner, a contact portion between the outdoor heat exchanger and a housing in the conventional installation state shown in FIG.

[Explanation of symbols]

 6, 6 'receiving stand 6a drain hole 10 indoor unit 12b suction grille (suction port) 12d outlet 20 outdoor unit 20a housing 20b outdoor heat exchanger 20f compressor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kunihiro Kobayashi 3-1-1 Asahicho, Nishibiwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Air Conditioning Works of Mitsubishi Heavy Industries, Ltd. (72) Inventor 3-1-1 Asahicho, Nishibiwashima-cho Mitsubishi Heavy Industries, Ltd. Air Conditioner Works F-term (reference) 3L054 BA02 BA04 BA05 BA10 BB01 BB03

Claims (4)

[Claims] 1. An outdoor heat exchanger, and a compressor for delivering a high-temperature and high-pressure gas refrigerant to the outdoor heat exchanger or the indoor heat exchanger.
A housing for accommodating the outdoor heat exchanger and the compressor; and a pedestal provided at a contact portion between the outdoor heat exchanger and the housing to protect a contact portion on the outdoor heat exchanger side. An outdoor unit characterized by the following. 2. The outdoor unit according to claim 1, wherein a plurality of drain holes are provided in the receiving stand. 3. An outdoor heat exchanger, and a compressor for delivering a high-temperature and high-pressure gaseous refrigerant to the outdoor heat exchanger or the indoor heat exchanger.
A housing accommodating the outdoor heat exchanger and the compressor; and a pedestal provided at a contact portion between the outdoor heat exchanger and the housing to protect a contact portion on the outdoor heat exchanger side. An indoor unit comprising: an outdoor unit; a fan for sucking indoor air from an inlet and blowing out from an outlet; and an indoor heat exchanger for exchanging heat between the indoor air and a refrigerant supplied from the outdoor unit. An air conditioner comprising a unit. 4. The air conditioner according to claim 3, wherein the pedestal is provided with a plurality of drain holes.