JP3122270B2 - Air conditioning system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for performing air conditioning using an air supply duct or an exhaust duct connected to an air conditioner.

[0002]

2. Description of the Related Art In recent years, a centralized air conditioner called a so-called multi-system, in which one indoor unit is shared by many indoor units, has become widespread. In this type, each room is individually cooled and heated by flowing a heat medium set at a predetermined temperature condition through a pipe from one outdoor unit to an indoor unit installed in each room of the building. is there.

[0003] However, such central heating basically exchanges heat via a heat medium, and merely performs cooling and heating, and does not perform any ventilation of the room. Inconveniences such as condensation and condensation cannot be avoided. In addition, it is necessary to secure a space for installing the indoor unit in each room. In addition, in the installation work and the piping for the refrigerant connecting the indoor unit and the outdoor unit, complicated work is avoided. Can not
The reality is that you have to leave it to a skilled profession.

Accordingly, the present applicant has previously proposed an integrated centralized air-conditioning system capable of simplifying piping work on site and performing centralized air-conditioning including cooling and heating and ventilation (Japanese Patent Application No. 1-10).
No. 9999).

[0005] This integrated central air-conditioning system is used for building 2
A part of the floor panel, which air-conditions each room through a branch-shaped air supply duct that leads to each room. The leading end of each room of the air supply duct is inside each room. It opens to face and is an air supply port. In addition, an exhaust duct that opens to the first-floor floor panel of the building, for example, the staircase section, and opens toward the inside of the building is disposed under the floor, and the opening has an exhaust port that exhausts air in the entire building. Have been. Therefore, the air supplied into the room from the air supply port passes through the gap of the door and flows into the hallway or hall, and returns to the air conditioner through the exhaust port of the first floor panel through the exhaust duct. Then, after the temperature is adjusted, the air flows out again into the room via the air supply duct.

[0006] An air conditioner is installed outside the building. The upper end of the air conditioner is connected to the base end of the air supply duct, and the lower end is connected to the base end of the exhaust duct. . Further, inside thereof, a blower unit for circulating air from the exhaust duct side to the air supply duct side, a ventilation unit for ventilating the air with outside air, and a heat exchange for heating or cooling the air. The heat exchanger is connected to an outdoor heat source unit.

According to such an air conditioning system, the air in the building sucked into the air conditioner by the exhaust duct is ventilated and heated or cooled in the air conditioner, and then again supplied to the air supply duct. Is supplied to each room of the building from the air supply duct, whereby each room is maintained at a predetermined temperature.

[0008]

By the way, in this type of air conditioning system, particularly in an air conditioning system using outside air as a heat source, it is difficult to obtain a large heating capacity, and it is not limited to a living room but a corridor or a hall. Since the space such as is also subject to air conditioning, it cannot cope with the case where the rising load is large, such as heating in the early morning of winter, and it takes a long time to raise the living room to the predetermined temperature. is there.

In order to address such a problem,
It has been implemented to incorporate an auxiliary heater in the air conditioner. However, the empty space generated in the air conditioner is limited in place and size, and therefore, in some cases, a desired heating capacity cannot be obtained because the size and arrangement of the auxiliary heater to be incorporated are also limited. There is a fact.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to sufficiently cope with a large rising heating load as in the early morning of winter, and to make it possible to reduce a living room or the like to a predetermined time in a short time. An object of the present invention is to provide an air conditioning system capable of raising the temperature.

[0011]

According to the first aspect of the present invention, an air supply duct or an exhaust duct connected to an air conditioner is provided.
A bypass air passage is provided in the bypass air passage.
The auxiliary heater is incorporated in the
Controlled by a temperature sensor located upstream of the
It is characterized by being performed.

[0012]

[0013]

According to the air conditioning system of the first aspect, the auxiliary heater is incorporated in the duct connected to the air conditioner,
By using the auxiliary heater, the return air flowing into the air conditioner or the conditioned air discharged from the air conditioner can be heated.

Further , since the duct is provided with a bypass air passage and the auxiliary heater is incorporated in the bypass air passage without providing an auxiliary heater directly in the duct, the flow of conditioned air in the duct is prevented by the auxiliary heater. Less. Therefore, as a fan for blowing air used in the air conditioner, a fan having characteristics similar to those of the conventional fan can be used.

[0015]

【Example】

First Embodiment FIG. 1 is a sectional view showing a main part of an air conditioning system according to the present invention,
FIG. 2 is a perspective view illustrating the entire air conditioning system. The air conditioning system 1 is provided in a two-story building 2 as shown in the figure. The air conditioning system 1 mainly includes an air supply duct 3 integrally attached to a panel body constituting a structure such as a floor, and an air conditioner 4 connected to a base end of the air supply duct 3.
And a heat source unit 5 serving as a heat source for the air conditioner 4.
Is incorporated.

The air supply duct 3 is integrated with a second floor panel P that separates the first floor and the second floor. That is, some of the second floor panels P are formed in a hollow box shape as described later, and the hollow box floor panels are joined together by joining together the openings 21 formed in the end faces of each other. An air supply duct 3 is formed.

The air supply duct 3 is disposed substantially at the center of the second floor panel P, and has a main duct 6 traversing the second floor panel P, and a side of the main duct 6. It comprises a sub duct 7 which is branched and disposed so as to communicate with each section from the section. The main duct 6 and the sub duct 7 are formed by joining a predetermined number of hollow box-shaped duct panels 15 to each other as described above. Further, an exhaust duct 9 that opens to the inside of the building 2 is provided in the first floor panel of the building 1.

An air conditioner 4 is installed outdoors, and its upper part is connected to the base end of the main duct 6 of the air supply duct 3 and its lower part is connected to the base end of the exhaust duct 9. ing. The air conditioner 4 generally includes a blower mechanism 11 that sucks air from the exhaust duct 9 and blows the air into the air supply duct 3, and a heat exchanger 1 that adjusts the air to a predetermined temperature.
2 and a ventilation mechanism 13 for ventilating the air between the outside air. Then, both air conditioners are connected to the heat source unit 5 via a heat medium pipe. As the heat source unit 5, there is a water-cooled type or the like, but a pneumatic type unit is used here.

As shown in FIG. 2, the duct panel 15 forming the main duct 6 has vertical core members 16a, 16a and horizontal core members 16b, 1
6b, the frame 16 is assembled into a rectangular outline, face materials 17, 17 are stuck on both sides of the frame 16, and a reinforcing core 16c is disposed substantially in the center of the frame 16 in parallel with the vertical core 16a. It has a basic configuration. Then, the frame body 16 and the face material 17,
The air passage 18 defined by the reinforcing core material 1
6c, the structure is divided vertically into two parts.

The duct panels 15 are joined to each other so that the joining end faces thereof are in close contact with each other, and
Is formed. An annular packing material 23 is interposed between the joining end faces of the duct panels 15 and on the outer peripheral portions of the openings 21 and 21 formed in the vertical core material 16a. An adhesive (not shown) is applied to an appropriate position on the periphery of the joint end surface at the position where the packing material 23 is attached, and both duct panels 15, 15 are interposed through this adhesive. Are glued together. As the adhesive, an appropriate foam adhesive or caulking material is used.

A duct panel 15 forming the main duct 6 and a duct panel 19 forming the sub duct 7
Is performed in the same manner. Here, the duct panel 19 forming the sub duct 8 is mainly composed of a frame body having a rectangular outline and face materials attached to both sides of the frame body, similarly to the duct panel 15. However, the main duct 1 is different from the main duct 1 in that a reinforcing core material is not provided therein and only one air passage is secured.
Different from 5. In addition, this duct panel 19 includes:
A hole is formed in the surface material near the end opposite to the side joined to the duct panel 15 forming the main duct 6 so as to open to each chamber, and serves as an air outlet 25.

A duct panel 19 forming the sub duct 7
Is connected at right angles to a state where the air passage inside the main duct 6 communicates with one of the air passages in the duct panel 15 forming the main duct 6.
A series of air passages branching from and extending to the sub duct 7 are formed.

On the other hand, as shown in FIG.
In the main duct 6, a bypass air passage 32 has a space 34 formed between the floor panel P on the second floor and the ceiling 33 on the first floor.
The auxiliary heater 3 is provided in the bypass air passage 32.
0 is interposed. As the auxiliary heater 30, a heater using electric resistance, a heater using a heat exchanger for flowing hot water and exchanging heat between air and hot water, or the like is used. Also,
A temperature sensor 35 is provided on the air conditioner 4 side (upstream side) inside the main duct 6 where the bypass air passage 32 is joined, and the temperature sensor 35 controls the auxiliary heater 30.

That is, when the conditioned air discharged from the air conditioner 4 detected by the temperature sensor 35 does not reach the predetermined temperature, the auxiliary heater 30 is turned on, and the conditioned air flowing through the main duct 6 is switched to the predetermined temperature. Warm to temperature. When the conditioned air discharged from the air conditioner 4 reaches a predetermined temperature, the auxiliary heater 30 is turned off, and heating is performed only by the heat exchanger 12 built in the air conditioner 4.

Next, the operation of the air conditioning system having the above configuration will be described. The air in the building 2 is exhausted from the exhaust duct 9 at a time and introduced into the outdoor air conditioner 4.
The air introduced here is conditioned by the heat source mechanism 12 and the ventilation mechanism 13 to a predetermined state while circulating in the air conditioner 4. The conditioned air is sent to two air passages in the main duct 6 of the air supply duct 3 and is distributed to air passages in the sub duct 7 at predetermined positions. Further, the conditioned air passes through an air passage in the sub duct 7,
Air is supplied into each room from an air outlet 25 provided at the tip end. Thereby, each room is maintained in a predetermined harmony state.

In the above-mentioned air flow, when the heating load is large, such as in the early morning of winter, the heat exchanger 12 in the air conditioner 4
The conditioned air alone cannot be heated to a predetermined temperature. In this case, the auxiliary heater 30 is turned on based on the output signal of the temperature sensor 35 provided at the base end of the main duct 6, and compensates for the shortage of the heating capacity in the air conditioner 4 to make the conditioned air in the main duct 6. Is heated to a predetermined temperature.

Here, the auxiliary heater 30 is provided not in the air conditioner 4 but in the main duct 6, but since the space inside the main duct 6 is larger than that of the air conditioner 4, the auxiliary heater 30 is disposed. There is no limitation on the size or location of the auxiliary heater 30, and the auxiliary heater 30 having a relatively large size and a large heating capacity can be incorporated in an arbitrary position. Therefore, a good heating effect can be obtained.

The auxiliary heater 30 is not provided directly in the main duct 6 but is provided in the duct by the bypass air passage 3.
2 and is incorporated in the bypass air passage 32, so that the flow of conditioned air in the duct 6 by the auxiliary heater 30 is less likely to be hindered. Therefore, a fan having the same level of characteristics as that of a conventional fan for sending conditioned air used in the air conditioner 4 can be used. Since the auxiliary heater 30 is provided in the main duct 6 as described above, even if the heating load at the start-up such as early in the morning in winter is large as described above, it is possible to cope with it and raise the living room to the predetermined temperature early. be able to.

Second Embodiment FIG. 4 shows a second embodiment of the present invention. The feature of this embodiment is that the auxiliary heater 30 is incorporated not in the air supply duct 3 but in the exhaust duct 9. That is, the auxiliary heater 30 is incorporated in the vicinity of the connection portion of the exhaust duct 9 to the air conditioner 4. Preferably, the size of the auxiliary heater 30 is such that the auxiliary heater 30 occupies approximately half the cross-sectional area of the exhaust duct 9 in order to reduce the flow resistance of the conditioned air flowing in the exhaust duct 9. Also, the exhaust duct 9
A temperature sensor 35 that controls ON / OFF of the auxiliary heater 30 is provided on the opposite side of the air conditioner where the auxiliary heater 30 is provided. In this embodiment, the same effects as in the first embodiment can be obtained.

It should be noted that the duct panel of the present invention is not limited to the above-described embodiment, and specific components such as the shape of the duct panel and the configuration of the building and the air conditioning system can be appropriately changed upon implementation.

For example, in the first embodiment, the air supply duct 3
Although the auxiliary heater is arranged in the main duct 6 forming the above, the auxiliary heater may be arranged in the sub duct 7 branched from the main duct 6.

[0032]

As described above, according to the air conditioning system of the first aspect, the auxiliary heater is incorporated in the duct connected to the air conditioner. The return air flowing in or the conditioned air discharged from the air conditioner can be heated. In addition, since the duct has a larger space than the inside of the air conditioner, there is no limitation on the size or the location of the auxiliary heater to be arranged, and the auxiliary heater having a relatively large heating capacity can be incorporated at any location. Even when the heating load is large, such as in the early morning of winter, it can be adequately dealt with.

Also, since the bypass air passage is provided in the duct without providing the auxiliary heater directly in the duct, and the auxiliary heater is incorporated in the bypass air passage, the flow of the conditioned air in the duct is prevented by the auxiliary heater. Less. Therefore, as a fan for blowing air used in the air conditioner, a fan having characteristics similar to those of the conventional fan can be used. The auxiliary heater is located upstream of the auxiliary heater.
It is controlled by a temperature sensor provided on the side
Therefore, it is good without being affected by the heat of the auxiliary heater itself.
Appropriate temperature control can be performed. By the way, the auxiliary heater
When controlling with a temperature sensor provided on the flow side
Means that the location of the temperature sensor itself is
The auxiliary heater is turned on / off or proportionally controlled
Temperature changes greatly due to
The controlled auxiliary heater tends to hunt,
Good temperature control cannot be expected.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a first embodiment of an air conditioning system of the present invention.

FIG. 2 is a perspective view showing an overall configuration of the air conditioning system.

FIG. 3 is a perspective view of a main duct.

FIG. 4 is a sectional view of a main part showing a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 air conditioning system 2 building 3 air supply duct 4 air conditioner 5 heat source unit 6 main duct 7 sub duct 9 exhaust duct 30 auxiliary heater 32 bypass air passage 35 temperature sensor

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 3/044 F24F 13/02 F24H 3/04 302

Claims (1)

(57) [Claims] An air supply duct or an exhaust duct connected to an air conditioner is provided with a bypass air passage.
Auxiliary heater is incorporated in the path the air passage, the auxiliary heater
Is a temperature sensor provided upstream of the auxiliary heater.
An air conditioning system characterized by being controlled by an air conditioner.