JP6383221B2 - Heat pump equipment outdoor unit installation structure - Google Patents

Description

  The present invention relates to an outdoor unit installation structure of a heat pump facility using air in a space under a floor of a building.

  In the outdoor unit of the heat pump facility, when frost adheres to the surface of the heat exchanger, the heat exchange efficiency tends to decrease. For this reason, the outdoor unit which can perform the defrost operation which removes the frost adhering to the surface of a heat exchanger is proposed (for example, the following patent document 1). In the defrosting operation, for example, the refrigerant in the heat exchanger is compressed and the temperature is increased, so that frost attached to the heat exchanger is removed.

  However, when the frequency of the defrosting operation is large, the burden on the compressor in the outdoor unit increases, and the durability tends to decrease.

JP 2003-172560 A

  The present invention has been devised in view of the above problems, and provides an installation structure capable of extending the service life of an outdoor unit of a heat pump facility by reducing the frequency of defrosting operation. The main purpose.

The present invention is an installation structure for installing an outdoor unit of a heat pump facility outside a building having an underfloor space surrounded by a foundation, the first opening facing the air intake portion of the outdoor unit, and the outdoor unit The outdoor unit is housed in an outdoor unit storage box having a second opening facing the exhaust part of the unit, and the first opening of the outdoor unit storage box allows at least air in the underfloor space to be outside the building. It is arranged toward an exhaust port provided in the foundation that can be discharged, and the underfloor space includes air in the underfloor space, air heated by a heat collecting device provided in the building, or exhaust of the building. Air supply means for discharging air heated by heat from the exhaust port to the outside of the building is provided, and the air supply unit supplies air warmed by the heat collecting device during the day from the exhaust port. Exhaust the air in the underfloor space at night It is characterized in that al discharged.

  In the outdoor unit installation structure of the present invention, the outdoor unit storage box is provided with a tank storage box in which hot water storage tanks for storing warm water are stored side by side, and the tank storage box is at least partially insulated. The tank storage box has an inlet for introducing the air inside the outdoor unit storage box, an outlet for exhausting the air in the tank storage box to the outside, and the outlet from the inlet It is desirable that a blower for generating an air flow toward the

  In the outdoor unit installation structure of the present invention, it is preferable that a power conditioner or a storage battery of a solar power generation device is stored in the tank storage box.

  In the outdoor unit installation structure of the present invention, the air under the underfloor space, the air heated by the heat collecting device provided in the building, or the air heated by the exhaust heat of the building is provided in the underfloor space. Air supply means is provided for discharging to the outside of the building, and when the temperature inside the tank storage box is equal to or lower than a predetermined temperature, the tank storage box is placed under the floor via the outdoor unit storage box. It is desirable to supply air in the space, air heated by a heat collecting device provided in the building, or air heated by exhaust heat from the building.

  In the outdoor unit installation structure of the present invention, it is preferable that the blower is driven when the temperature inside the tank storage box is equal to or higher than a predetermined temperature.

  In the outdoor unit installation structure of the heat pump facility of the present invention, the outdoor unit is housed in an outdoor unit storage box having a first opening facing the air intake part of the outdoor unit and a second opening facing the exhaust part of the outdoor unit. ing. Thereby, it is prevented that the outdoor unit is directly exposed to sunlight or wind and rain, and the deterioration of the outdoor unit is suppressed.

  The 1st opening of an outdoor unit storage box is arrange | positioned toward the exhaust port provided in the foundation which can discharge | emit the air of at least underfloor space to the exterior of a building. Thereby, in the winter season when frost may occur, the air in the underfloor space having a temperature higher than the outside air is supplied to the intake portion of the outdoor unit. Therefore, the generation of frost on the surface of the heat exchanger is suppressed, and the frequency of the defrosting operation of the outdoor unit is reduced. Therefore, the burden on the compressor of the outdoor unit is reduced, and the durability is improved.

It is a perspective view of the outdoor unit installation structure of one Embodiment of this invention. It is sectional drawing of the outdoor unit installation structure of FIG. It is sectional drawing of the building which shows arrangement | positioning of each duct. It is a perspective view of the outdoor unit installation structure of other embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a building 5 having an underfloor space 4 surrounded by a foundation 3 and an installation structure 1 for an outdoor unit 2 of a heat pump facility provided outside the building 5. As FIG. 1 shows, the heat pump installation of this embodiment comprises the air conditioner for adjusting the temperature of the living room space of the building 5, for example. The heat pump facility is not limited to such an application, and may constitute, for example, a hot water supply facility for warming water used in the building 5.

  FIG. 2 shows a cross-sectional view of the outdoor unit installation structure 1 of the present embodiment. As shown in FIG. 2, the outdoor unit 2 of the heat pump facility of the present invention performs heat exchange between the air sucked from the intake section 10 and the refrigerant in the heat exchanger in the same manner as the existing outdoor unit, The exchanged air is discharged from the exhaust unit 11. The air intake unit 10 of the present embodiment is provided, for example, on the surface of the back side of the outdoor unit 2 (the foundation 3 side of the building 5), and the exhaust unit 11 is provided on the opposite surface. Known configurations are adopted for the heat exchanger, the fan for discharging the air, and the piping that serves as the refrigerant passage, and are omitted in FIG.

  The outdoor unit 2 is stored in an outdoor unit storage box 6 provided outside the building 5.

  The outdoor unit storage box 6 is formed in a substantially rectangular parallelepiped shape, for example, and one surface thereof faces the foundation 3 of the building 5. The outdoor unit storage box 6 has a first opening 15 facing the air intake unit 10 of the outdoor unit 2 and a second opening 16 facing the exhaust unit 11 of the outdoor unit 2.

  The 1st opening 15 is provided in the surface 13 by the side of the said foundation 5 of the outdoor unit storage box 6, for example. The first opening 15 is disposed toward the exhaust port 18 provided in the foundation 3. As a desirable mode, the first opening 15 of the present embodiment is provided with a gap between the exhaust port 18 and the exhaust port 18 is located at the approximate center of the first opening 15.

  For example, the second opening 16 is provided on the surface 14 opposite to the surface on which the first opening 15 is provided. The second opening 16 has, for example, a plurality of blades 20 that partially cover the opening. Each blade 20 is spaced apart in the height direction and extends parallel to each other in the lateral direction. For example, each blade 20 is inclined downward toward the outside of the outdoor unit storage box 6. The second opening 16 can efficiently discharge air while suppressing rain from entering the outdoor unit storage box 6.

  As shown in FIG. 1, a plurality of blades 20 similar to the second opening 16 are provided on the side surface 12 of the outdoor unit storage box 6. Such a side surface 12 helps to exhaust air more efficiently.

  Such an outdoor unit storage box 6 can prevent the outdoor unit 2 from being directly exposed to sunlight or wind and rain without hindering the intake and exhaust of the outdoor unit 2, and is useful for extending the life of the outdoor unit 2. Moreover, since the outdoor unit storage box 6 is provided outside the building 5, excellent maintainability can be obtained as compared with the case where the outdoor unit 2 is provided in the underfloor space 4 of the building 5.

  As shown in FIG. 2, the exhaust port 18 provided in the foundation 3 penetrates the foundation 3. Thereby, the exhaust port 18 can exhaust at least the air in the underfloor space 4 to the outside of the building. In general, since the air in the underfloor space 4 is in contact with the ground having a large heat capacity, the temperature change is small throughout the day, and in winter, the temperature is higher than the outside air all day.

  With such an outdoor unit installation structure 1, air in the underfloor space 4 having a temperature higher than that of the outside air is supplied to the intake section 10 of the outdoor unit 2 in winter when frost may occur. Therefore, generation | occurrence | production of the frost on the heat exchanger surface is suppressed, and since the frequency of the defrost operation of the outdoor unit 2 falls, the burden of the compressor of the outdoor unit 2 becomes small, and the durability is improved.

  In order to further enhance the above-described effects, it is desirable that the foundation 3 of the building 5 is at least partially insulated from the outside air. Such a foundation 3 can maintain the air in the underfloor space 4 at a high temperature.

  The underfloor space 4 is preferably provided with, for example, air supply means 25 for selectively discharging warmer air from the exhaust port 18 to the outside of the building.

  The air supply means 25 can, for example, discharge air guided from a plurality of ducts 30 communicating with the main body 26 to the outside of the building. The air supply means 25 of this embodiment includes, for example, a first duct 31, a second duct 32, and a third duct 33.

  FIG. 3 shows a cross-sectional view of the entire building 5 and shows the arrangement of the ducts 30. As shown in FIG. 3, the first duct 31 communicates with the underfloor space 4, for example. The air in the underfloor space 4 is guided to the main body 26 side through the first duct 31.

  For example, the second duct 32 communicates with the heat collector 28. The heat collector 28 is provided, for example, on the roof 23 of the building 5 and warms the air using sunlight. The air heated by the heat collector 28 is guided to the main body 26 side through the second duct 32.

  The heat collector 28 is not limited to the one that directly uses sunlight, and may be one that uses electric power generated by solar power generation, or one that uses other heat sources such as underground heat.

  For example, the third duct 33 communicates with the indoor 22 of the building 5 and guides the air heated by exhaust heat that has not been used in the building 5 to the main body 26 side. The exhaust heat includes, for example, what is generated by electric equipment such as a refrigerator.

  As shown in FIG. 2, the main body 26 selectively switches the air guided from each duct 30 and discharges the air from the exhaust port 18 to the outdoor unit storage box 6 side.

  For example, it is desirable that the main body portion 26 selects one of the ducts 30 in accordance with the situation so that the duct 30 and the exhaust port 18 communicate with each other. For this reason, it is desirable that the main body 26 has a switching valve (not shown) for switching the duct 30 communicating with the exhaust port 18.

  In a desirable mode, the main body portion 26 communicates the second duct 32 and the exhaust port 18 during the day, and exhausts the air heated by the heat collecting device 28 (shown in FIG. 3, the same applies hereinafter). Drain from the mouth 18. On the other hand, it is difficult to supply sufficiently warm air from the heat collector 28 at night. In this case, it is desirable that the main body portion 26 communicates the first duct 31 and the exhaust port 18 at night and exhausts air in the underfloor space 4 from the exhaust port 18. In general, the air in the underfloor space 4 has a small temperature change, and air that is warmer than the air obtained by the heat collecting device 28 can be obtained at night. Accordingly, the main body 26 can exhaust warm air throughout the day.

  For example, when the exhaust heat of the building 5 increases, the main body portion 26 preferably communicates the exhaust port 18 and the third duct 33 and exhausts the air heated by the exhaust heat.

  FIG. 4 shows an outdoor unit installation structure 1 according to another embodiment of the present invention. In FIG. 4, the same code | symbol is attached | subjected to the structure which is common in embodiment mentioned above. As shown in FIG. 4, in this embodiment, the outdoor unit storage box 6 is provided with a tank storage box 8 that stores hot water storage tanks 7 in which warm water is stored.

  The hot water storage tank 7 stores, for example, water heated by electric power at night when the charge is low, or water heated using sunlight. A well-known thing can be employ | adopted for the installation for warming water. In FIG. 4, the equipment for warming water and the configuration of piping connected to the hot water storage tank 7 are omitted.

  The tank storage box 8 is provided, for example, on the upper part of the outdoor unit storage box 6, but is not limited thereto, and may be provided on the side of the outdoor unit storage box 6, for example.

  The tank storage box 8 is preferably at least partially insulated. As a desirable mode, tank storage box 8 is formed with wall material 36 containing a heat insulating material. Such a tank storage box 8 suppresses a decrease in the temperature of the water in the hot water storage tank 7.

  The tank storage box 8 includes, for example, an introduction port 38 for introducing the air inside the outdoor unit storage box 6, a lead-out port 39 for exhausting the air inside the tank storage box 8 to the outside, and an introduction port 38. A blower 40 for generating an air flow toward the outlet 39 is provided.

  When the temperature inside the tank storage box 8 is equal to or lower than a predetermined temperature t1, for example, air that has a high temperature in the tank storage box 8 via the outdoor unit storage box 6 when the blower 40 is driven. Is supplied. The said temperature t1 is set to 4-6 degreeC, for example. Thereby, not only the frequency of the defrosting operation of the outdoor unit 2 is decreased, but also the temperature decrease of the water in the hot water storage tank 7 is suppressed.

  In the present embodiment, as described above, the tank storage box 8 is provided in the upper part of the outdoor unit storage box 6, so that convection occurs between the tank storage box 8 and the outdoor unit storage box 6. For this reason, in this embodiment, when the temperature of the air in the tank storage box 8 decreases, even when the blower 40 is not driven, a part of the air in the outdoor unit storage box 6 is transferred to the tank storage box 8 by convection. It is desirable in that it is guided.

  Inside the tank storage box 8 of the present embodiment, for example, a power conditioner 43 or a storage battery 44 of a solar power generation device or the like is provided with a heating device 42 having a temperature higher than the outside air during use or standby. In FIG. 4, wirings connected to the respective heat generating devices 42 are omitted. Such a tank storage box 8 serves to maintain the temperature of the water in the hot water storage tank 7 by increasing the temperature of the internal air by the heat generating device 42.

  When the heat generating device 42 described above is provided inside the tank storage box 8, it is desirable that the blower 40 be driven even when the temperature inside the tank storage box 8 is equal to or higher than a predetermined temperature t2. The temperature t2 is set to 38 to 42 ° C., for example. Thereby, the efficiency fall and damage by the heat | fever of the heat generating apparatus 42 are suppressed effectively.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

1 Outdoor unit installation structure 2 Outdoor unit
DESCRIPTION OF SYMBOLS 3 Foundation 4 Underfloor space 5 Building 6 Outdoor unit storage box 10 Intake part 11 Exhaust part 15 1st opening 16 2nd opening 18 Exhaust port

Claims (5)

An installation structure for installing an outdoor unit of a heat pump facility outside a building having an underfloor space surrounded by a foundation,
The outdoor unit is housed in an outdoor unit storage box having a first opening facing the air intake of the outdoor unit and a second opening facing the exhaust of the outdoor unit,
The first opening of the outdoor unit storage box is disposed toward an exhaust port provided in the foundation capable of discharging at least the air in the underfloor space to the outside of the building ;
The underfloor space is supplied with air for discharging the air in the underfloor space, the air heated by the heat collecting device provided in the building, or the air heated by the exhaust heat of the building from the exhaust port to the outside of the building. Means are provided,
The outdoor unit installation structure characterized in that the air supply means exhausts air warmed by the heat collecting device during the day from the exhaust port and exhausts air in the underfloor space from the exhaust port at night . In the outdoor unit storage box, a tank storage box in which a hot water storage tank for storing warm water is stored is provided side by side,
The tank storage box is at least partially insulated,
The tank storage box includes an inlet for introducing the air inside the outdoor unit storage box, an outlet for exhausting the air in the tank storage box to the outside, and the inlet to the outlet The outdoor unit installation structure according to claim 1, further comprising a blower for generating a flow of air to go . The outdoor unit installation structure according to claim 2, wherein a power conditioner or a storage battery of a solar power generation device is stored in the tank storage box . The underfloor space is supplied with air for discharging the air in the underfloor space, the air heated by the heat collecting device provided in the building, or the air heated by the exhaust heat of the building from the exhaust port to the outside of the building. Means are provided,
When the temperature inside the tank storage box is equal to or lower than a predetermined temperature, the tank storage box is warmed by the air in the underfloor space and the heat collecting device provided in the building via the outdoor unit storage box. The outdoor unit installation structure according to claim 2 or 3 , wherein the heated air or the air heated by the exhaust heat of the building is supplied . The outdoor unit installation structure according to any one of claims 2 to 4, wherein the blower is driven when a temperature inside the tank storage box is equal to or higher than a predetermined temperature .

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