JPH0122546B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump air conditioner that can reduce running costs from the viewpoint of mechanism.

In the case of an air conditioner that performs air conditioning for interior zones of living rooms in medium-to-high-rise buildings, etc., conventionally, return air from the living rooms is discharged to the outdoors in an unchanged state. Therefore, the reality is that a large amount of heat is wasted without being effectively utilized. On the other hand, the running costs of air conditioners tend to increase due to kinetic energy, and therefore, there is a need for measures that can reduce the running costs from a mechanical standpoint.

Therefore, the present invention provides a heat pump air conditioner that can deal with the above-mentioned problems.

The heat pump air conditioner according to this invention includes:
In the return air chamber of the closed casing, an outdoor coil and a bypass damper that is automatically proportionally controlled by a thermostat installed in the living room etc. are installed, and by opening and closing the bypass damper,
All or part of the return air discharged outdoors through the return air chamber is configured to pass through the outdoor coil, so that heat of the return air is recovered by heat exchange during the passage. This is what I did.

Hereinafter, this invention will be specifically explained based on the drawings.

In the figure, 1 is a living room, 2 is an air conditioner room, and 3 is a heat pump air conditioner installed in the air conditioner room 2.

Each element of the heat pump air conditioner 3 is located within the supply air chamber 5 and the return air chamber 6 of the closed casing 4.
It is located inside.

A compressor 7, a filter 8, an indoor coil 9, and an air supply fan 10 are installed in the air supply chamber 5, and an outdoor coil 11, a bypass damper 12, and an exhaust fan 13 are installed in the return air chamber 6. is installed. Further, in the partition wall 14 between the air supply chamber 5 and the return air chamber 6, a damper 16 is attached to the air supply chamber 5 side of the partition wall 15, and a damper 17 is attached to the return air chamber 6 side of the partition wall 15. and a damper 18 attached to a portion of the partition wall 14 located on the outside of the partition wall 15, and a damper 19 attached to a portion of the partition wall 14 located on the inside of the partition wall 15. A four-way, single-axis simultaneous operation type damper 21 that is operated simultaneously by an operation shaft 20 is installed.

The four-way single-axis simultaneous operation type damper 21 is operated by a motor (pulse motor, step motor, etc.) 22, and its control is based on a signal from a CO ₂ sensor (not shown) installed in the living room 1, etc. It will be done. The opening degree of the damper 16 is adjusted according to the amount of outside air required, and the damper 1 is opened in inverse proportion to this.
8 is adjusted in opening. The opening degree of the damper 19 is adjusted according to the required amount of return air, and the opening degree of the damper 17 is adjusted in inverse proportion to this. These dampers 16
-19 are interlocked when the operating shaft 20 is rotated.
At this time, dampers 16, 17 and dampers 18, 1
9 are in a proportional relationship.

In such a heat pump air conditioner 3,
Outside air OA is introduced into the air supply chamber 5 via the outside air louver 23 by the suction force of the air supply fan 10.
The introduced outside air OA is passed through dampers 16 and 18.
The current is divided into one toward the indoor coil 9 and one toward the outdoor coil 11 depending on the amount of opening. The air headed for the indoor coil 9 is cleaned by the filter 8 and then temperature-controlled (cooled or heated) by the indoor coil 9 and then sent to the supply air duct 24 and the blowout slot 2.
5 to the perimeter zone in the living room 1 (SA). The air flowing toward the outdoor coil 11 is mixed with the return air RA flowing in via the damper 18 due to the suction force of the exhaust fan 13 and passes through the outdoor coil 11 . During this passage, the return air RA undergoes heat exchange and is discharged outdoors (EA) via the exhaust louver 26. The return air RA that passes through the outdoor coil 11 may be all or part of the air that has passed through the exhaust fan 13. In all cases, the bypass damper is closed, and when the bypass damper 12 is open, an amount corresponding to the opening amount passes through. The opening degree of the bypass damper 12 is automatically proportionally controlled by a thermostat (not shown) installed in the living room 1 or the like. With this, outdoor coil 1
1 to adjust the cooling or heating capacity. The return air RA from the living room 1 that flows into the return air room 6 from the return air duct 27 is divided into one direction toward the outdoor coil 11 and one toward the indoor coil 9 depending on the opening degree of the damper 17 and the damper 19. be done. The air flowing toward the outdoor coil 11 joins and mixes with a portion of the outside air OA flowing in from the damper 18 as described above, and passes through the outdoor coil 11 . Further, the air flowing toward the indoor coil 9 joins and mixes with the outside air OA flowing in from the damper 16 , is purified by the filter 8 , and passes through the indoor coil 9 .

In the illustrated case, the air outlet from the living room 1 through the air outlet slot 25
The conditioned air SA that has flowed into the perimeter zone inside the room is mixed with indoor air and exchanged heat, and then passes through the passage 28 of the perimeter zone and is discharged from the return air duct 27 through the exhaust slot 29 provided in the ceiling wall of the perimeter zone.
flows into. The passage 28 in the perimeter zone is composed of an outer wall window glass 30 and a sunlight reflecting barrier 31, and the return air RA flowing through the passage 28 and the sunlight reflecting barrier (including the blind 32) 31
This reduces heat loads such as through-flow heat and solar radiation in the perimeter zone. Sunlight reflective barrier 31
A chuck damper 33 that is opened by return air RA is provided at the lower end of the damper 33 to prevent cold draft from the perimeter zone from entering the interior zone when the interior zone is not air-conditioned.

In summary, the heat pump air conditioner according to the present invention has the following features:
Equipped with an outdoor coil and a bypass damper that is automatically proportionally controlled by a thermostat installed in the living room, etc. By opening and closing the bypass damper, air is discharged outdoors through the return air chamber. Since all or part of the return air passed through the outdoor coil is configured to pass through the outdoor coil, the heat of the return air passing through the outdoor coil can be recovered by heat exchange. Therefore, since the recovered heat can be used for indoor coil heat, running costs can be reduced from a mechanical standpoint.

[Brief explanation of drawings]

The drawing is a sectional view of the invention. In the figure, 3 is a heat pump air conditioner;
4 is a closed casing, 6 is a return air chamber, 11 is an outdoor coil, 12 is a bypass damper, and RA is return air.

Claims (1)

[Claims] 1 In the return air chamber of the closed casing, an outdoor coil and a bypass damper that is automatically proportionally controlled by a thermostat installed in the living room etc. are installed, and by opening and closing the bypass damper, A heat pump air conditioner, characterized in that all or part of the return air discharged outdoors through the return air chamber passes through the outdoor coil.