JPH0357375B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat pump type air conditioner, and in particular,
The present invention relates to an outdoor unit of a heat pump air conditioner that connects an indoor unit and an outdoor unit with piping.

A heat pump type air conditioner is used to heat a room in the winter and to cool the room in the summer. Therefore, the outdoor heat exchanger provided in the outdoor unit is required to absorb heat in the winter and radiate heat in the summer. In order to effectively obtain these effects, conventionally, outside air is supplied to the surface of the outdoor heat exchanger using a blower. However, such devices that utilize only outside air have the disadvantage that, apart from heat dissipation in the summer, heat absorption in the winter tends to be insufficient. In particular, this drawback increases in cold regions, leading to a decrease in the efficiency of heat pumps.

Therefore, an object of the present invention is to provide an outdoor unit that can utilize outside air for heat radiation in the summer and sunlight as a heat source in the winter.

Another object of the present invention is to provide an outdoor unit that can sufficiently dissipate heat in summer and absorb heat in winter.

According to the present invention, an outdoor unit of a heat pump type air conditioner of a type in which an indoor unit and an outdoor unit are connected by piping includes a rectangular cylinder that is placed horizontally outdoors to form an air passage, and the rectangular cylinder An outdoor heat exchanger and an air blower are disposed inside the rectangular cylinder, and the upper surface of the rectangular cylinder is made of a transparent body, and the transparent body is provided with a plurality of louvers that can be opened and closed. An outdoor unit of a heat pump type air conditioner is obtained.

According to the outdoor unit of the heat pump type air conditioner of the present invention, by closing the louvers in the summer and opening them in the winter, there is no risk of heat dissipation in the summer being obstructed by sunlight, and sunlight can be used as a heat source in the winter. Therefore, the problem of insufficient heat absorption in winter in the outdoor heat exchanger can be solved.

By using reflective material on the surface of the louver, winter sunlight can be used more effectively.
Furthermore, by using a heat insulating material inside the louver, the heat dissipation effect in summer can be enhanced.

Examples will be described below with reference to the drawings.

Referring to Figure 1, buildings such as residences or stores 1
A heat pump air conditioner of the type in which an indoor unit 2 and an outdoor unit 3 are connected via piping 4 is installed in the unit. The indoor unit 2 is placed indoors in the building 1, and the outdoor unit 3
is installed on the upper surface of the roof 5 of the building 1. Note that it is widely known that the indoor unit 2 and the outdoor unit 3 cooperate with each other to form a heat pump type air conditioner to perform indoor cooling or heating of the building 1, and its operating principle. A detailed description here will be omitted.

Now, referring to FIG. 2, the outdoor unit 3 installed on the upper surface of the roof 5 of the building 1 includes a rectangular cylinder 7 having a flat shape forming an air passage 6. The rectangular cylinder 7 has an upper wall 8 made of a transparent material, and a lower wall 9 and both side walls having a highly heat-insulating structure.
Further, the openings at both ends of the rectangular cylinder 7 are provided with dampers 11 and 12 that can open and close those openings. The open posture of the dampers 11 and 12 is shown by two-dot chain lines. Further, a large number of louvers 13 are provided on the upper surface of the upper wall 8 of the rectangular cylinder 7. Referring to FIG. 3 in addition to FIG. 2, the louver 13 has a reflective material 132 made of glossy aluminum or stainless steel on the surface of a heat insulating material 131, but the louver 13 is made of resin plated with metal. It may be something that has been done. The louver 13 can be installed between a fallen position as shown by the solid line so as to substantially cover the top wall 8 and a raised position as shown by the chain line.
It is rotatable about a shaft 133 so that the posture can be changed. Preferably, all the louvers 13 are interlocked at the same time.

Further, referring to FIG. 2, inside the rectangular cylinder 7, that is, in the air passage 6, a blower 14 and an outdoor heat exchanger 15 are disposed. The outdoor heat exchanger 15 is a component of the heat pump circuit, and performs a refrigerant condensing function when cooling the indoor space of the building 1, and performs a refrigerant evaporation function when heating the interior of the building 1. Note that a refrigerant compressor, which is another component of the heat pump circuit, may also be disposed inside the rectangular cylinder 7, but if the outdoor unit 3 is installed on the roof 5 as shown in the figure, due to weight considerations. Up,
It is preferable that the refrigerant compressor is installed in another part, for example, on the ground or in the indoor unit 2.

Next, the effect will be explained. First, during summer cooling operation, louver 13 should be folded down and damper 1 should be turned down.
1 and 12 are opened, and the blower 14 is operated.
According to this, heat radiation of the outdoor heat exchanger 15 is promoted by the outside air passing through the air passage 6. Further, in this state, the sunlight 16 is blocked by the louver 13 and does not enter the outdoor heat exchanger 15, so that the heat radiation of the outdoor heat exchanger 15 is not inhibited.

Also, the louver 13 is raised during heating operation in winter. According to this, sunlight 16 is not blocked by the louver 13 and passes through the upper wall 8 made of a transparent body and enters the outdoor heat exchanger 15. At this time, as shown in FIG. 4, the sunlight 16 that enters the outdoor heat exchanger 15 includes sunlight A that directly passes through the upper wall 8, and sunlight B and C that are reflected by the louvers 13. Therefore, during heating operation in winter, sunlight
can be used efficiently as a heat source. in particular,
When it is sunny, the blower 14 is stopped and the dampers 11 and 12 are closed, and when it is not sunny, the dampers 11 and 12 are opened and the blower 14 is operated. In this way, heat is sufficiently absorbed in the outdoor heat exchanger 15 during heating operation in winter.

Note that although the outdoor heat exchanger 3 has been described above for the case where it is installed on the roof 5, it goes without saying that it may be installed at other locations.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing the usage state of an embodiment of the present invention, Fig. 2 is a schematic sectional view showing an embodiment of the outdoor unit according to the invention together with its operation, and Fig. 3 shows only the louver portion. The enlarged sectional view and FIG. 4 are action explanatory views. 1...Building, 2...Indoor unit, 3...Outdoor unit, 4
... Piping, 5 ... Roof, 6 ... Air path, 7 ... Square cylinder, 8 ... Top wall, 13 ... Louver, 131 ...
...Insulating material, 132...Reflective material, 14...Blower,
15...Outdoor heat exchanger, 16...Solar light.

Claims (1)

[Scope of Claims] 1. An outdoor unit of a heat pump air conditioner of a type in which an indoor unit and an outdoor unit are connected by piping, which includes a rectangular cylinder that is placed horizontally outdoors to form an air passage; An outdoor heat exchanger and a blower are installed inside the body,
An outdoor unit of a heat pump air conditioner, characterized in that the upper surface of the rectangular cylindrical body is made of a transparent body, and a plurality of louvers are provided on the transparent body so as to be openable and closable. 2. The outdoor unit of a heat pump air conditioner according to claim 1, wherein the louver has a reflective material on its surface. 3. The outdoor unit of a heat pump air conditioner according to claim 1 or 2, wherein the louver has a heat insulating material inside.