JPH0357374B2 - - 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 with a very simple structure in which sunlight serves as a heat source in the winter but does not impede heat radiation in the summer.

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 a blower are disposed inside the rectangular cylinder, and the upper wall of the rectangular cylinder is made of a transparent body, and a plurality of louvers are attached to the transparent body, and the mounting angle of the louver is There is obtained an outdoor unit of a heat pump type air conditioner characterized in that the outdoor heat exchanger is set to allow sunlight to enter the outdoor heat exchanger in the winter season but to block it in the summer season.

According to the outdoor unit of the heat pump type air conditioner of the present invention, by utilizing the fact that the angle of elevation of the sun is different in summer and winter, the louver with a fixed mounting angle allows or disallows sunlight to enter the outdoor heat exchanger. Despite its extremely simple structure, it is possible to use outside air for heat dissipation in the summer and sunlight as a heat source in the winter. The problem of insufficient heat absorption in winter can be solved.

Examples will be described below with reference to the drawings.

With reference 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 fixedly attached to the upper surface of the upper wall 8 of the rectangular cylinder 7 in parallel positions with a certain angle θ.

A blower 14 and an outdoor heat exchanger 15 are disposed inside the rectangular cylinder 7, that is, in the air passage 6. 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. Moreover, it is preferable that the refrigerant compressor is installed in another part, for example, on the ground or in the indoor unit 2.

By the way, when installing the outdoor unit 3 on the upper surface of the roof 5 of the building 1, the louver 13 is connected to the outdoor heat exchanger 15.
The mounting direction and mounting posture of the outdoor unit 3 are adjusted so as to allow sunlight to enter the outdoor unit in the winter but block it in the summer. Here, the relative angle between sunlight and the louver 13 is determined mainly in the summer season. If necessary, feet may be provided on the bottom surface of the rectangular cylinder 7.
The posture of the outdoor unit 3 is adjusted by providing a cover between the lower surface of the outdoor unit 3 and the roof 5. Next, the operation will be explained. First, during cooling operation in summer, the dampers 11 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, sunlight 16 in summer 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.

Furthermore, since the sunlight 17 in the winter has a different irradiation angle from the sunlight 16 in the summer, it passes through the upper wall 8 made of a transparent body and enters the outdoor heat exchanger 15 without being blocked by the louvers 13. Therefore, sunlight 17 can be used as a heat source during heating operation in winter.
Specifically, 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 closed.
drive. 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, and FIG. 2 is a schematic sectional view showing an embodiment of the outdoor unit according to the present invention along with its operation. 1...Building, 2...Indoor unit, 3...Outdoor unit, 4
... Piping, 5 ... Roof, 6 ... Air path, 7 ... Square cylinder, 8 ... Top wall, 13 ... Louver, 14 ...
Blower, 15... Outdoor heat exchanger, 16... Summer sunlight, 17... Winter sunlight.

Claims (1)

[Claims] 1 The outdoor unit of a heat pump type air conditioner that connects the indoor unit and outdoor unit with piping includes a rectangular cylinder that is placed horizontally outdoors to form an air passage, and the outdoor heat is stored inside the rectangular cylinder. An exchanger and a blower are installed,
In addition, the upper wall of the rectangular cylinder is made of a transparent body, and a plurality of louvers are attached to the transparent body, and the mounting angle of the louvers is set to prevent sunlight from entering the outdoor heat exchanger during the winter. An outdoor unit of a heat pump type air conditioner characterized by being set to allow but block during summer.