JP2020051721A - Residential air conditioning device - Google Patents

Abstract

To obtain a residential air conditioning device that allows high-efficiency air conditioning and facilitates construction.SOLUTION: A residential air conditioning device comprises: an integrated air conditioner (1) in which an air source heat pump (17) comprising an air supply heat exchanger (14), a heat source heat exchanger (15), and a compressor (16) is provided in a casing (20); an underfloor storage part (2) in which the air conditioner (1) is installed; an air supply duct (3) for sending air-conditioning air heat-exchanged by the air supply heat exchanger (14) of the air conditioner (1) to a living space; and an air return duct (4) for sending air in the living space to the underfloor storage part (2) so as to use it as heat source air to be heat-exchanged by the heat source heat exchanger (15) of the air conditioner (1).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a residential air conditioner.

  Generally, in a house, an air conditioner (air conditioner) is installed in each room for air conditioning. This type of air conditioner is mainly of a separate type, and has a structure in which a separated indoor unit and an outdoor unit are connected by a refrigerant pipe.

JP-A-10-148366

  Therefore, there is a problem that a plurality of air conditioners are required for each room, installation space is required, and labor is required for installation of a refrigerant pipe. In addition, the outdoor unit uses outside air having a low exergy (maximum energy that can be extracted until a certain system reaches an equilibrium state with the surroundings) as a heat source, and thus has a low energy consumption efficiency and has a problem of generating noise.

  In order to solve the above problems, the present invention provides an integrated air conditioner in which a heat pump of an air heat source having a heat exchanger for air supply, a heat exchanger for heat source, and a compressor is provided in a casing, and the air conditioner is installed. An underfloor storage unit, an air supply duct for sending air-conditioned air exchanged in the air supply heat exchanger of the air conditioner to a living space, and a heat source for heat exchange in the heat source heat exchanger of the air conditioner. And a return air duct that sends air from the living space to the underfloor storage unit so as to use the air as air.

According to the first aspect of the present invention, since air-conditioning air is sent from an integrated air conditioner to each room using an air supply duct, installation of an air conditioner in each room and installation of a refrigerant pipe are not required. Since the air conditioner is stored in the dead space under the floor, the living space is not wastefully limited. Because it is stored under the floor, it can prevent the noise of the air conditioner from leaking and does not disturb the neighborhood. Since the air in the living space with high exergy is used as a heat source, the defrost operation can be reduced and the air conditioning capacity can be made more efficient.
According to the second aspect of the present invention, since the underfloor storage unit uses the house foundation and the floor of the room, the construction is simple and the cost can be reduced. The air conditioner can be easily maintained and inspected by opening and closing the lid, which is convenient.

According to the third aspect of the invention, the air exchanged by the heat source heat exchanger is exhausted to the outside via the exhaust path, whereby ventilation under the floor can be performed. In addition, the cost can be reduced without installing a separate ventilation device.
According to the invention of claim 4, the outside air can be cooled in the living space by using the air conditioner, and the air mixed with the outside air and the return air is heat-exchanged into the air-conditioning air supply heat exchanger as air-conditioning air. Space air conditioning is possible. Ventilation of the living space and underfloor by sending outside air from the outside to the living space through an external air passage, an air conditioner and an air supply duct, and exhausting the air in the living space to the outside through a return air duct, an air conditioner and an exhaust passage Can be performed simultaneously. In addition, the cost can be reduced without installing a separate ventilation device.

According to the fifth aspect of the present invention, it is possible to perform comfortable air-conditioning without a sense of draft or uneven temperature by the action of the heat radiation of the radiation unit.
According to the invention of claim 6, by operating the controller, the air for air conditioning can be increased or decreased to individually air-condition a plurality of living spaces.

BRIEF DESCRIPTION OF THE DRAWINGS It is the simplified explanatory drawing of the residential air conditioner of this invention. FIG. 2 is a plan view of the air conditioner shown in FIG. 1 and a cross-sectional view of a house foundation. It is the top view of another air conditioner shown in FIG. 1, and sectional drawing of the foundation of a house. It is a bottom side perspective view of a radiation unit. It is a bottom view of the radiation unit shown in FIG. It is AA sectional drawing of the radiation unit shown in FIG. It is BB sectional drawing of the air conditioner for houses shown in FIG. It is CC sectional drawing of the air conditioner for houses shown in FIG.

  1 to 3 show one embodiment of a residential air conditioner of the present invention. This residential air conditioner includes an air conditioner 1, an underfloor storage section 2, an air supply duct 3, a return air duct 4, an exhaust duct 5, a return air fan 6, an outside air path 7, an exhaust path 8, an outlet 9, an intake port 9. An opening 10, a radiation unit 11, an air supply damper 12, and a controller 13 are provided. In FIG. 1, each duct is shown in a simplified manner by a thick solid line. The thick dotted arrow in each figure indicates the flow of air for air conditioning.

  The air conditioner 1 includes an air heat source heat pump 17 having an air supply heat exchanger 14, a heat source heat exchanger 15, and a compressor 16, an air supply fan 18, an exhaust fan 19, and an air dust removal fan 19. The filter 29 and the filter 20 are integrally provided in the casing 20 so that a cooling operation and a heating operation can be switched. The air supply fan 18 blows air through the air supply heat exchanger 14 so that air passes through the air supply heat exchanger 14 and blows out the air from the air conditioner 1. The exhaust fan 19 blows the air through the heat source heat exchanger 15 so that the air passes through the heat source heat exchanger 15 and blows out the air from the air conditioner 1.

  The heat pump 17 repeats the process sequence of compression, condensation, expansion, and evaporation for the refrigerant, and performs heat absorption in the refrigerant evaporation process and heat radiation in the refrigerant condensation process for the air that exchanges heat with the refrigerant. The heat pump 17 includes an air supply heat exchanger 14 and a heat source heat exchanger 15 that perform different steps of a refrigerant evaporation step and a condensation step, a compressor 16 that compresses and transports the refrigerant, and expands the refrigerant. At least a decompression mechanism (not shown) such as an expansion valve to be operated, and a switching mechanism (not shown) such as a valve for switching between an evaporation step and a condensation step of the air supply heat exchanger 14 and the heat source heat exchanger 15. These are connected by piping so that the refrigerant circulates.

  Although not shown, the air-supply heat exchanger 14 and the heat-source heat exchanger 15 are provided with a group of a large number of plate-like heat transfer plates through which air passes, and a heat transfer plate, similarly to a known plate fin coil. And a group of a large number of connected heat transfer tubes for refrigerant flow. The refrigerant flowing in the heat transfer tube and the passing air exchange heat through the heat transfer tube and the heat transfer plate. The heat transfer tube preferably has an elliptical outer periphery, but may have a circular shape.

  The air conditioner 1 is installed in the underfloor storage unit 2. The underfloor storage section 2 includes a partition section 22 surrounded by a part of a vertical wall 21 of the house foundation, a floor section 23 of a kitchen or other room above the partition section 22, and an underfloor storage section provided on the floor section 23. And a lid 24 that opens and closes for maintenance and inspection of the second air conditioner 1.

  The outlet 9, the inlet 10, and the radiation unit 11 are installed in the living space S. In the illustrated example, the outlet 9, the inlet 10, and the radiation unit 11 are installed on the ceiling 25, but they may be installed on the wall or floor of the room. The air supply duct 3 is provided to send the air-conditioning air (air supply) heat-exchanged by the air-supply heat exchanger 14 of the air conditioner 1 to the living space S. Specifically, one or both of the air outlet 9 and the radiation unit 11 is connected to the air supply duct 3 so that air passes through one or both of the air outlet 9 and the radiation unit 11 and one or both of the air outlet 9 and the radiation unit 11. Supplies air for air conditioning to a living space S such as a bedroom, living room or kitchen.

  The return air duct 4 is provided so as to send air in a living space S such as a corridor, stairs, or a room to the underfloor storage unit 2, and is used as heat source air for heat exchange in the heat source heat exchanger 15 of the air conditioner 1. More specifically, the air inlet 10 is connected to the underfloor storage unit 2 by the return air duct 4 so that air passes therethrough, and the air (return air) in the living space S is sent to the underfloor storage unit 2 by the return air fan 6. ing. The return air fan 6 is installed in the underfloor storage unit 2 for maintenance and inspection. The return air fan 6 is operated in conjunction with the operation of the air conditioner 1 and is operated by the controller 13.

  The outside air path 7 is provided so as to take outside air into the underfloor storage unit 2 from outside. In the illustrated example, the outside air passage 7 is formed by penetrating the outside air hole 26 so that air passes through the vertical wall 21 adjacent to the outside of the house foundation constituting the underfloor storage unit 2. Although not shown, a duct may be provided in place of the outside air hole 26 to form the outside air passage 7.

  The air conditioner 1 in FIG. 2 (the air conditioner 1 on the right side in FIG. 1) is configured to use the outside air of the underfloor storage unit 2 as the air for air exchange with the air supply heat exchanger 14. The air is blown by the air supply fan 18 and the air exhaust fan 19 of the air conditioner 1 to suck air from the air supply inlet and the air exhaust inlet of the air conditioner 1, and to enter the living space through the return air duct 4 and the underfloor storage unit 2. While the return air of S is taken into the air conditioner 1, outside air is taken into the air conditioner 1 from outside through the underfloor storage unit 2. The outside air and the return air are heat-exchanged in the air supply heat exchanger 14 and the heat source heat exchanger 15.

  The air conditioner 1 of FIG. 3 (the air conditioner 1 on the left side of FIG. 1) is configured to use the return air of the living space S as the air for air exchange with the air supply heat exchanger 14. In the illustrated example, the return air duct 4 is branched, and one of them is connected to the air conditioner 1 so that the return air passes through the air supply heat exchanger 14, and the return air exits from the other into the underfloor storage unit 2. It is configured as follows.

  The exhaust path 8 is provided so that air (exhaust) that has undergone heat exchange in the heat source heat exchanger 15 of the air conditioner 1 is discharged from the underfloor storage unit 2 to the outside via the underfloor 27. In the example of the drawing, exhaust holes are respectively formed in a vertical wall 21 adjacent to the outside of the housing foundation, a vertical wall 21 of the housing foundation partitioning the underfloor 27, and a vertical wall 21 of the housing foundation forming the underfloor storage unit 2. The air passage 28 is connected so that the air passes therethrough, and the exhaust outlet of the air conditioner 1 and the exhaust hole 28 of the underfloor storage unit 2 are connected by the exhaust duct 5 so that the air passes therethrough, thereby forming an exhaust passage 8. By blowing air with the exhaust fan 19 of the air conditioner 1, air is sucked in from the exhaust inlet of the air conditioner 1, and outside air is taken into the underfloor storage unit 2 from outside.

  The air supply damper 12 is provided in the air supply duct 3 to adjust the flow rate of the air conditioning air. The controller 13 includes a microcomputer and operation switches (not shown), and operates the air supply dampers 12 individually to increase or decrease the amount of air flow, or to operate the air conditioner 1 and the return air fan 6. The controller 13 is provided for each room or collectively in one room.

  The radiating unit 11 radiates the heat of the air-conditioning air while discharging the air-conditioning air flowing from the first chamber 30 into the living space S through the first chamber 30 through which the air-conditioning air flows through the air supply duct 3. The air conditioner includes a second chamber section 31 and an airflow adjusting section 32 that adjusts the wind speed and distribution of the air-conditioning air flowing from the first chamber section 30 to the second chamber section 31. The radiation unit 11 is installed with the bottom surface of the second chamber 31 facing the living space S.

  The airflow control unit 32 includes a group of first through holes 33 that emit air-conditioning air to the second chamber unit 31, and the second chamber unit 31 includes a group of second through holes 34 that emit air-conditioning air to the living space S. It has. The first chamber section 30 includes a flat plate-shaped first ventilation section 36 which comes into contact with the second chamber section 31 and discharges air for air conditioning to the second chamber section 31. A group of first through holes 33 is formed in the first ventilation section 36. The airflow adjusting section 32 adjusts the wind speed and distribution of the air-conditioning air to equalize the airflow distribution of the air-conditioning air in the second chamber section 31. The cross-sectional area of the first chamber 30 through which the air-conditioning air passes decreases from the windward side to the leeward side, thereby allowing the air-conditioning air to spread throughout the space.

  The second chamber portion 31 has a flat plate-shaped second ventilation portion 37 that comes into contact with the living space S and emits air-conditioning air to the living space S, a heat storage portion 38, and a flange for attaching the second ventilation portion 37 and the heat storage portion 38. And a frame body 39. A group of second through holes 34 is formed in the second ventilation portion 37. The opening area of the group of the second through holes 34 is set to be larger than the opening area of the group of the first through holes 33. Thus, the air velocity can be gradually reduced while increasing the static pressure in two stages, and the air for air-conditioning can be spread over the entire space of the first chamber 30 and the second chamber 31. Therefore, the release and emission of the air-conditioning air to the air-conditioned space S can be equalized, and comfortable air-conditioning without a sense of draft or temperature unevenness can be performed. The shapes of the first through hole 33 and the second through hole 34 can be freely changed to various shapes such as a perfect circle, an ellipse, a long hole, and a narrow groove.

  The heat storage section 38 is configured with a group of plates 35 that are arranged with a gap through which the air-conditioning air passes and that store and radiate the heat of the air-conditioning air. The plate 35 and the second ventilation portion 37 are made of aluminum or the like having high heat transfer and heat emissivity. The air-conditioning air passes through the group of plates 35 in a rectifying manner while diverging and diffusing, and exits from the second through hole 34 of the second ventilation portion 37 to the living space S. The heat of the air-conditioning air transfers to the group of plates 35 and the second ventilation portion 37, and radiates from the group of plates 35 through the group of second through holes 34 and from the second ventilation portion 37 to the living space S. Is done.

REFERENCE SIGNS LIST 1 air conditioner 2 underfloor storage unit 3 air supply duct 4 return air duct 7 external air path 8 exhaust path 11 radiation unit 12 air supply damper 13 controller 14 air supply heat exchanger 15 heat source heat exchanger 16 compressor 17 heat pump Reference Signs List 20 casing 21 vertical wall 22 partitioning section 23 floor section 24 lid section 27 underfloor S living space

According to the third aspect of the invention, the air blown from the air conditioner is exhausted to the outside through the underfloor to ventilate under the floor. In addition, the cost can be reduced without installing a separate ventilation device.
According to the invention of claim 4, the outside air can be cooled in the living space by using the air conditioner, and the air mixed with the outside air and the return air is heat-exchanged into the air-conditioning air supply heat exchanger as air-conditioning air. Space air conditioning is possible. By using the air conditioner, the outside air is sent from outside to the living space, and the air in the living space is exhausted to the outside, so that the living space and the underfloor ventilation can be simultaneously performed. In addition, the cost can be reduced without installing a separate ventilation device.

According to the fifth aspect of the invention, the opening area of the second through-hole group of the radiation unit is made larger than the opening area of the first through-hole group, so that the wind speed is gradually reduced while increasing the static pressure in two stages. The air-conditioning air can be distributed throughout the space between the first and second chambers. Therefore, the release and emission of air-conditioning air to the living space can be equalized, and comfortable air-conditioning without a sense of draft or temperature unevenness can be performed.
According to the invention of claim 6, by operating the controller, the air for air conditioning can be increased or decreased to individually air-condition a plurality of living spaces.

1 to 8 show one embodiment of a residential air conditioner of the present invention. This residential air conditioner includes an air conditioner 1, an underfloor storage section 2, an air supply duct 3, a return air duct 4, an exhaust duct 5, a return air fan 6, an outside air path 7, an exhaust path 8, an outlet 9, an intake port 9. An opening 10, a radiation unit 11, an air supply damper 12, and a controller 13 are provided. In FIG. 1, each duct is shown in a simplified manner by a thick solid line. The thick dotted arrow in each figure indicates the flow of air for air conditioning.

The second chamber portion 31 has a flat plate-shaped second ventilation portion 37 that comes into contact with the living space S and emits air-conditioning air to the living space S, a heat storage portion 38, and a flange for attaching the second ventilation portion 37 and the heat storage portion 38. And a frame body 39. A group of second through holes 34 is formed in the second ventilation portion 37. The opening area of the group of the second through holes 34 is set to be larger than the opening area of the group of the first through holes 33. Thus, the air velocity can be gradually reduced while increasing the static pressure in two stages, and the air for air-conditioning can be spread over the entire space of the first chamber 30 and the second chamber 31. Therefore, the release and emission of the air-conditioning air to the living space S can be equalized, and comfortable air-conditioning without a sense of draft or temperature unevenness can be performed. The shapes of the first through hole 33 and the second through hole 34 can be freely changed to various shapes such as a perfect circle, an ellipse, a long hole, and a narrow groove.

Claims (6)

  An integrated air conditioner (1) in which a casing (20) is provided with an air heat source heat pump (17) having a supply air heat exchanger (14), a heat source heat exchanger (15), and a compressor (16). ), An underfloor storage section (2) in which the air conditioner (1) is installed, and air-conditioning air heat-exchanged by the air supply heat exchanger (14) of the air conditioner (1). The air in the living space (S) is stored under the floor so that the air in the living space (S) is used as air for a heat source for exchanging heat in the heat source heat exchanger (15) of the air conditioner (1) and the air supply duct (3). And a return air duct (4) sent to the section (2).   The underfloor storage section (2) includes a partition section (22) surrounded by a part of a vertical wall (21) of a housing foundation, a floor section (23) above the partition section (22), and the floor section. The air conditioner according to claim 1, further comprising a lid (24) provided on the (23) and opened and closed for maintenance and inspection of the air conditioner (1) of the underfloor storage part (2). .   An exhaust path (8) for taking out air exchanged in the heat source heat exchanger (15) of the air conditioner (1) from the underfloor storage section (2) to the outside of the air conditioner through the underfloor (27). The residential air conditioner according to claim 1.   An outside air path (7) for taking in outside air from the outdoors into the underfloor storage section (2), and the outside air of the underfloor storage section (2) as the air-conditioning air for exchanging heat in the air supply heat exchanger (14). The air conditioner according to any one of claims 1 to 3, further comprising the air conditioner (1) configured to be used.   The radiating unit (11) for radiating the heat of the air-conditioning air while emitting the air-conditioning air to the living space (S) through the air supply duct (3). A residential air conditioner according to claim 1.   An air supply damper (12) for adjusting an air flow rate of the air-conditioning air in the air supply duct (3); and a controller (13) for operating the air supply damper (12) to increase or decrease the air flow rate. The residential air conditioner according to any one of claims 1 to 5, comprising:

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