JP2011174674A - Air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique of reducing a temperature difference between rooms even if there is influence of an external environment such as sunshine duration. <P>SOLUTION: A central air conditioning system S includes an air conditioner 2 carrying out air conditioning in an air conditioning chamber 1, a plurality of respective ducts 3 arranged such that one openings are provided such that the air conditioner chamber 1 is a base point and other openings are conducted to a plurality of respective rooms of a house, and a plurality of blowers 4 provided with respect to the openings of the air conditioner chamber 1 side of the plurality of respective ducts 3. Air conditioning is carried out such that a target temperature in the air conditioner chamber 1 and a target temperature of an air conditioning object room are within a temperature difference of 5°C during cooling and a temperature difference of 10°C during heating. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioning system.

  The residential central air conditioning system (duct type air conditioning system), which is one of the air conditioning systems, is widely used in highly airtight and highly insulated houses. However, as the air conditioning area increases and the operation time increases, the energy consumption tends to increase as compared to the air conditioner (air conditioner) system that is an individual air conditioner. In particular, in a house having a plurality of rooms, since the orientations of the rooms are different, there is a difference in the room temperature due to the difference in the solar radiation time for each room.

On the other hand, in conventional central air conditioning systems, since a single fan has a constant air volume, it is difficult to control the air volume in each room, resulting in a decrease in comfort due to unnecessary air conditioning, overheating, and overcooling. There is.
Therefore, the current central air-conditioning system cannot take full advantage of the excellent thermal performance of highly airtight and highly insulated houses.

Therefore, for example, Patent Document 1 discloses a technique in which a blower is installed in each duct piped for each room.
In the technique disclosed in Patent Document 1, the amount of air blown into each room is adjusted by changing the rotation speed of the blower installed for each duct, and thereby air conditioning of each room is performed. It has become.

Japanese Patent Laid-Open No. 10-325565

“Air-conditioning and sanitary engineering society”, “Mechanism of comfortable thermal environment”, pages 148-149 and Figs.

However, the technique of Patent Document 1 does not consider the temperature difference between the rooms, which is the temperature difference between the rooms based on the influence of the sunshine time and other external environments.
For this reason, there is a problem that the comfort of each room and the entire house is hindered and the energy consumption is also large.
In addition, there has been a desire to eliminate the temperature difference that makes residents uncomfortable due to the difference between the target temperature in the air conditioner room and the target temperature in the air-conditioned room.

  The present invention has been made in consideration of such a technical background, and it is an object of the present invention to provide a technique capable of reducing the temperature difference between rooms even at least under the influence of sunlight time and other external environments. And

In order to solve the above technical problem, the present invention has the following configuration.
That is, the present invention relates to an air conditioner that performs air conditioning in an air conditioner room, and one opening is set as a base point of the air conditioner room, and the other opening is led to a plurality of rooms in a house. Each of the plurality of ducts that are piped and a plurality of blowers provided to the air conditioner room side mouths of the plurality of ducts, the target temperature in the air conditioner room, and the air conditioning target The air conditioning system is configured to air-condition the room with a temperature difference within 5 degrees Celsius during cooling and a temperature difference within 10 degrees Celsius during heating, except when starting up.

  According to the air conditioning system of the present invention configured as described above, the target temperature in the air conditioner room and the target temperature in the room to be air-conditioned are within a temperature difference of 5 degrees Celsius during cooling and within 10 degrees Celsius during heating. Since the air conditioning is performed with the temperature difference, the temperature difference between the rooms can be reduced even under the influence of the sunshine time and other external environment. Therefore, it can be said that it is an energy-saving air blowing system.

  In addition, by setting the temperature difference between the air conditioner room and the room to within 5 degrees Celsius during cooling and within 10 degrees Celsius during heating, the air discharged from the duct to each room is released toward the people living in the room. However, the extent to which a person feels cold or warm can be suppressed.

  As described above, according to the present invention, it is possible to provide a residential environment free from an extreme temperature difference for each room even under the influence of sunshine hours and other external environments.

Sectional drawing of the highly airtight and highly heat-insulated house to which the central air-conditioning system of Example 1 of this invention was applied. The perspective view of FIG. The principal part enlarged view of FIG.

Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be exemplarily described based on examples. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified.
A preferred embodiment of the air conditioning system of the present invention will be described below with reference to FIGS.

Example 1
FIG. 1 shows a highly airtight and highly insulated house to which a central air conditioning system S1 according to the present invention is applied.
High airtightness is to prevent drafts from entering the house, and high heat insulation is to avoid the warmth in the winter from outside walls, roofs, windows, etc. that are in contact with the outside of the house. In summer, heat should be kept out. Therefore, specifically, a highly airtight / highly insulated house is filled with minute gaps in order to improve airtightness, and in order to improve heat insulation, heat insulating material with high heat insulating performance is used, and windows are used. This is a house where sashes with double-glazed glass are used.

The central air conditioning system S1 is for taking advantage of the excellent thermal performance of such a highly airtight and highly insulated house.
Hereinafter, the central air conditioning system S1 will be described.

The central air conditioning system S1 is an air conditioner that performs air conditioning in the air conditioner room 1 installed in the attic, and is a commercially available home energy-saving air conditioner (air conditioner) 2 that also has a cooling and heating function, and one mouth is the air conditioner. A plurality of air supply ducts 3 installed so that the machine room 1 serves as a base point and the other port is led to a plurality of rooms in the house, and the one port on the air conditioner room 1 side. A plurality of air supply (blower) blowers (ventilation fans) 4 provided to the air conditioner, an air supply duct 31 for supplying outside air OA toward the air conditioner room 1, and air of the house toward the outside And an exhaust duct 32 for exhausting. In the air conditioner room 1, an air conditioner 2, one opening of each air supply duct 3, and an air supply fan 4 are arranged.

Each of these constituent members will be described below.
In the air conditioner 2, the indoor unit 21 is installed in the air conditioner room 1, and the outdoor unit 22 is installed outside the house. The air conditioning capacity is determined by calculating the heating / cooling load. In addition, the air conditioner capacity greatly depends on the structure and construction of the house, and it is necessary to select equipment based on experience based on actual results.
It should be noted that one Air of capacity in the housing of the heat insulation division four regions of the normal (about ² 140m) (5
kw) is sufficient. Two units may be installed depending on the shape of the house and the way of living.

  The air supply duct 3 is preferably a low pressure loss flexible duct. The air supply duct 3 is piped linearly or in a curved shape having a large curvature so that resistance (ventilation resistance) is not applied to the air as much as possible when passing through the air.

  Further, in this embodiment, the air supply duct 3 directs the air supply SA from the blow grills 50 provided in the plurality of living rooms 42 and the underfloor 36, which are air-conditioning rooms of the house, to the living room 42 and the underfloor 36, respectively. And blow out. The supply air SA is air in the air conditioner room 1 whose temperature and humidity are adjusted by cold air and warm air emitted from the air outlet of the air conditioner 2. Moreover, the installation location of the blowing grill 50 in the living room 42 or the like is preferably the window side with a large load.

  The air supply blowers 4 are installed on the wall surface of the air conditioner room 1 by the number of air-conditioning target rooms 42. A plurality of exhaust ports 41 which are installation holes for the installation are formed on the wall surface of the air conditioner room 1. Each supply blower 4 is connected to one of the intake ducts 3 in a state where the supply blower 4 is installed at the exhaust port 41. The supply air blower 4 is rotated by using a direct current (DC) motor as a drive source.

  The air conditioner room 1 is surrounded by a heat insulating material. Thereby, the air in the air conditioner room 1 that has been cooled or heated by the cold air or the warm air emitted from the air outlet of the air conditioner 2 does not leak to the outside of the air conditioner room 1.

  Further, in the air conditioner room 1, an air supply port 311 into which one port of the air supply duct 31 is fitted, a gallery 15 communicated with a housing hole 46 through a communication passage 47, and inspection. In addition, a dedicated inspection port 17 (see FIG. 2) for maintenance is formed.

In the air supply duct 31, a deep hood 121, which is an outside air introduction portion for introducing outside air, is attached to an outside air intake port 10 formed on the outer wall of the house on the other side, and dust in the atmosphere is removed. A filter unit 13 and a heat exchange air unit 14 that recovers heat energy are provided to suppress heat loss that occurs during cooling and heating.
The gallery 15 is a vent for returning the air supply SA introduced into the hall 46 by the air supply SA via the living room 42 to the air conditioner room 1 via the communication passage 47.

  The exhaust duct 32 uses, for example, an exhaust grill 40 installed in a utility 34, an underfloor 36, or the like, which is a room in which facilities such as a washing machine, a dryer, and an iron are collectively installed, as a base of exhaust flow. A deep hood installed at the exhaust port 11 for exhausting the outside air formed on the outer wall of the house after passing through the heat exchange air unit 14 provided in the middle of the exhaust duct 32 from the exhaust grill 40 as a starting point. From 122, the air in the house is discharged to the outside.

  In addition, the heat exchange air unit 14, the air supply duct 31, and the exhaust duct 32 are insulated to prevent condensation. In addition, it is preferable that the heat exchange air unit 14 calculates the ventilation resistance of the air supply duct 31 and the exhaust duct 32 and selects a specification that can sufficiently secure the air volume.

  Furthermore, in order to prevent a short circuit that is a phenomenon in which air is circulated in a narrow range because the positions of the air conditioner, the exhaust port, and the air supply port are too close, the air conditioner room 1 has an air conditioner 2 and an exhaust port. 41. It is preferable to separate the installation positions of the air supply port 311 as much as possible.

  In the present system S1, the temperature difference between the target temperature in the air conditioner room 1 and the target temperature in the living room 42 is small so that it is within 5 degrees Celsius during cooling and within 10 degrees Celsius during heating. The air discharge amount by the supply air blower 4 is set so as to be at least 100 m 3 / h.

In the case of summer cooling, an air conditioner having the ability to set the temperature of the air conditioner room to 23 degrees Celsius is selected and set. Further, in the case of winter heating, an air conditioner having the ability to set the temperature of the air conditioner room to 18 degrees Celsius is selected and set. Furthermore, if the Q value as the heat loss coefficient and the C value as the equivalent gap area are about 2.4 w / m 2 ° C. and 1.0 cm 2 / m 2, respectively, sufficient cooling and heating are possible.
However, the temperature of the air conditioner room is not limited to 23 degrees Celsius or 18 degrees Celsius. The temperature difference may be smaller than 5 degrees Celsius during cooling and 10 degrees Celsius during heating.

  The reason why such a setting can be made is that, in a highly airtight and highly insulated house, if a predetermined amount of airflow can be secured, there is no need for a large temperature difference in the cool and warm air for treating the heat load. The heat load refers to the amount of heat loss and heat acquisition such that heat escapes to the outdoors during heating and heat flows from the outdoors during cooling.

Next, air circulation when the central air conditioning system S1 having such a configuration is used will be described.
When the air supply blower 4 is driven by a DC motor, air circulation starts from the air conditioner room 1.

  First, the air in the air conditioner room 1 is sent to the living rooms 42 and the underfloor 36 via the air supply duct 3. An amount of outside air OA corresponding to the supplied air enters the air supply duct 31 from the deep hood 121 attached to the outside air intake 10.

  The dust contained in the outside air OA is removed from the outside air OA by the filter unit 13. Thereafter, outside air OA is introduced into the air conditioner room 1 from the air supply port 311 of the air conditioner room 1 via the heat exchange air unit 14. After the outside air OA introduced into the air conditioner room 1 is set to the set temperature of the air conditioner 2, the outside air OA is sent to each living room 42 and the underfloor 36 via the air supply duct 3.

  The supply air SA sent to the living room 42 then passes through the hole 46 from the vent 43 of the living room 42 and then reaches the utility 34 via the vent 35. Thereafter, the supply air SA is exhausted to the outside as exhaust air EA through the exhaust air duct 32 from the exhaust grill 40 installed in the utility 34 as the indoor air RA, through the exhaust duct 32 therefrom. .

  In addition, the supply air SA sent from the blowout grill 50 to the underfloor 36 then passes through the duct 32 from the exhaust grille 40 installed in the underfloor 36, passes through the heat exchange air unit 14, and is also outdoors as exhaust EA. To be discharged.

  Furthermore, the room air RA such as the living room 42 is sent to the air conditioner room 1 via the communication path 47 of the hall 46 in addition to flowing to the utility 34.

Next, operational effects will be described.
In the present system S1, the temperature difference between the temperature in the air conditioner room 1 and the target temperature of the living room 42 and the like is set to be within 5 degrees at the maximum, and the amount of air discharged by the air supply blower 4 is the lowest. It is set to be 100 m3 / h.

  Therefore, the difference between the target temperature of the living room 42 and the like and the temperature of the air introduced into the living room 42 from the vent 43 is even smaller than 5 degrees Celsius during cooling and 10 degrees Celsius during heating. Therefore, even if a person living in the living room 42 or the like is exposed to the air introduced from the vent hole 43, there is little discomfort due to the temperature difference.

  Furthermore, in this system S1, heat shock is unlikely to occur. Heat shock refers to the effect of sudden temperature changes on the body. For example, a rapid temperature change from the dressing room to the bathroom during bathing in winter causes the blood vessels to remarkably expand and contract, and the blood pressure and pulse to fluctuate greatly. This may cause cerebral infarction or cerebral hemorrhage.

  Furthermore, it is inexpensive because it uses the energy-saving air conditioner 2 for mass sales and the air supply blower 4 that is driven by a DC motor that is also mass-sold. Renewal is relatively easy because it is inexpensive.

  In addition, by using a direct current motor to rotate the air supply blower 4, the current consumption can be reduced to a fraction of that of an alternating current (AC) motor (maximum power consumption can be reduced by 30 to 75%). ). Thus, by using a commercial item, the energy-saving performance of a commercial item can be utilized for the air conditioning of the whole house.

  The air conditioner 2 and the air supply fan 4 driven by the direct current motor are mass-produced products, so there is no problem with the cost burden and the production response capability when constructing this system.

  Furthermore, since the air supply duct 3 employs a low-pressure loss flexible duct, it is difficult for the ventilation resistance to be applied. Therefore, the pressure loss in the air supply duct 3 can be reduced. And since arrangement | positioning of the air supply duct 3 is piping by the curve shape which has a linear or big curvature, it is easy to clean the inside.

  Furthermore, since the air conditioner room 1 and the air supply fan 4 are gathered in the air conditioner room 1 installed in the attic, the maintenance worker and the resident are not in contact with each other during the maintenance. There is no need to care for each other.

And since a large airflow flows in a duct, generation | occurrence | production of mold | fungi in a duct can be suppressed.
Moreover, if this system is applied so that the cool air from the air supply blower can be sent to the attic, the hot air accumulated in the attic can be removed in summer (see FIG. 2).

In the present invention, as an air conditioner of the central air conditioning system, a commercially available home energy-saving air conditioner (air conditioner) having a small air conditioner capacity is installed in the air conditioner room.
However, a plurality of air supply ducts 3 installed such that one of the ports is set to be the base point of the air conditioner room 1 and the other port is led to each of a plurality of rooms of the house, and the air conditioner A large amount of air is supplied to each of a plurality of rooms of the house by a plurality of air supply (blower) blowers (ventilation fans) 4 provided for the one opening on the side of the room 1. For this reason, even if the temperature of the air volume coming out from the air outlet of the air conditioner is not so low in summer, it can be felt cool because the air volume supplied to each room by the air supply blower 4 is large.

Further, in the winter season, even if the temperature of the air volume coming out from the air outlet of the air conditioner is not so high, it can be felt warm because the air volume supplied to each room by the air supply blower 4 is large.
Specifically, as described above, the temperature difference between the target temperature in the air conditioner room 1 and the target temperature in the living room 42 is small so that it is within 5 degrees Celsius during cooling and within 10 degrees Celsius during heating. By setting and setting it large so that the amount of air discharged by the air supply blower 4 is at least 100 m 3 / h, it is possible to prevent unwanted local airflow (draft) from occurring.

S1 Central air conditioning system 1 Air conditioner room 2 Air conditioner (air conditioner)
3 Air supply duct (duct)
4 Supply air blower (blower)
DESCRIPTION OF SYMBOLS 10 Outside air intake port 11 Outlet port 13 Filter unit 14 Heat exchange air unit 15 Garage 17 Inspection port 21 Indoor unit 22 Outdoor unit 31 Air supply duct 32 Exhaust duct 34 Utility 35 Ventilation port 36 Underfloor 40 Exhaust grill 41 Exhaust port 42 Living room 43 Vent 46 Hole 50 Blowout grill 121 Deep hood 122 Deep hood 311 Air inlet EA Exhaust OA Outside air RA Return air SA Air supply

Claims (1)

An air conditioner for air conditioning in the air conditioner room;
A plurality of ducts, one of which is configured to be based on the air conditioner room and the other of which is led to a plurality of rooms of the house and piped;
A plurality of fans provided with respect to the air conditioner room side mouth of each of the plurality of ducts,
An air conditioning system in which a target temperature in the air conditioner room and a target temperature in a room to be air-conditioned are air-conditioned with a temperature difference within 5 degrees Celsius during cooling and a temperature difference within 10 degrees Celsius during heating.

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