JPH0737104Y2 - Heat recovery air conditioning system - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat recovery type air conditioning system that effectively utilizes hot exhaust heat or cold exhaust heat generated between an entire air conditioning system and an individual air conditioning system.

[0002]

2. Description of the Related Art In a building in which total air conditioning (central air conditioning) is performed, individual air conditioners (individual air conditioners) have been installed in order to cope with time lags in room usage by tenants and partial operation during overtime. May be added. In addition, in order to make the environment of the indoor space more comfortable, the window side (perimeter) air conditioning may be different from the interior air conditioning so that separate cooling and heating operations can be performed. When adopting such an air conditioning system,
A duct, a heat exhauster, etc. are provided as an independent system, and each is operated separately. In this case, the air conditioner for overall air conditioning (overall air conditioner) and the individual air conditioner may operate not only in the same operation mode, for example, both cooling or both heating but also one cooling and the other heating. is there. In this way, by adding an individual air conditioner and providing a separate air conditioning system, it is possible to simultaneously realize different operation modes that require different parts of the building, and it is possible to perform fine air conditioning.

[0003]

However, in an air conditioning system provided with an individual air conditioner, even if the entire air conditioner performs heating operation, for example, like the individual air conditioner provided in the south perimeter in winter. Regardless, the individual air conditioners may require cooling operation in order to mitigate the temperature rise due to solar radiation.In such cases, the condenser of the heat source of the overall air conditioner system performs cold exhaust heat, while In the condenser of the individual air conditioner, warm exhaust heat is generated, and each cold exhaust heat is wasted, which is extremely uneconomical. In addition, in the general air conditioner, surplus air is exhausted by intake of fresh air (OA), etc. However, since this surplus air is conditioned air adjusted to room temperature, room temperature level cold and hot heat is exhausted through the surplus air. It was thrown away to the outside with this, which was also uneconomical.

The present invention has been made in view of the above situation, and when the entire air conditioner and the individual air conditioner are provided side by side, it is possible to effectively utilize the hot exhaust heat or the cold exhaust heat generated in each air conditioning system. The purpose of the present invention is to provide a heat recovery type air conditioning system that can be used and thereby reduce the air conditioning running cost.

[0005]

In order to achieve the above object, a heat recovery type air conditioning system according to the present invention is provided with an individual air conditioner separately from the whole air conditioner, and cools and cools heat of one air conditioner. A heat recovery air conditioning system that recovers by contributing to the improvement of the operation efficiency of the other air conditioner, in which the return air chamber to which the return duct is connected is connected to the entire air conditioner, and a first partition is provided in this return air chamber. Divides the interior of the retan chamber into the entire air conditioner side chamber chamber and the retan duct side chamber chamber, and by providing a second partition in the retan duct side chamber chamber, the retan duct side chamber chamber communicates with the retan duct and the chamber chamber that does not. The chamber chamber that does not communicate with the return duct is exhausted by providing a third partition inside the chamber chamber that does not communicate with the return duct. It is divided into a chamber chamber and a bypass chamber chamber, and a first damper is provided on the first partition wall of a portion sandwiched between the entire air conditioner side chamber chamber and the return chamber chamber, and is sandwiched between the entire air conditioner side chamber chamber and the bypass chamber chamber. A second damper is provided on the first partition wall of the portion to be enclosed, and a condenser of an individual air conditioner is provided on the second partition wall of the portion sandwiched between the retan chamber chamber and the bypass chamber chamber. A third damper is provided on the second partition wall of the sandwiched portion, and a fourth damper is provided on the third partition wall of the portion sandwiched between the exhaust chamber and the bypass chamber.

[0006]

When the whole air conditioner and the individual air conditioners are in the same mode of heating / cooling operation, the first damper and the fourth damper are opened and the second damper and the third damper are closed. As a result, part of the return air collected in the return chamber passes through the condenser, flows into the bypass chamber, passes through the fourth damper, and flows into the exhaust chamber. At this time, since the return air is at the room temperature level, it effectively exchanges heat with the condenser, improves the operation efficiency of the individual air conditioner, and recovers the exhaust heat from the exhausted return air. On the other hand, when the overall air conditioner and the individual air conditioner are in the heating / cooling operation in different modes, the second damper and the third damper are opened, the first damper is in a half-open state, and the fourth damper is closed. As a result, part of the return air collected in the return chamber passes through the condenser, flows into the bypass chamber, and then flows into the entire air conditioner-side chamber. At this time, the exhaust heat from the condenser exchanges heat with the return air that passes through the condenser and contributes to the operation of the entire air conditioner, and the exhaust heat from the condenser is recovered.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a heat recovery type air conditioning system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view showing a heat recovery type air conditioning system of the present invention in the same operation mode, and FIG. 2 is an explanatory view showing a heat recovery type air conditioning system of the present invention in a different operation mode. An air conditioner (whole air conditioner) 1 for the whole air conditioner is provided in the air conditioner room of the building, and the whole air conditioner 1 air-conditions the entire building. On the other hand, an air conditioner for individual air conditioning (individual air conditioner) 3 is provided in a part of the building so that the individual air conditioner 3 can cool and heat a part of the building by an air conditioning system independent of the entire air conditioner 1. Has become. The return air chamber 5 is connected to the overall air conditioner 1, and the return air chamber 5
The return air (RA) is collected from a return duct (not shown).

A first partition 7 is provided in the return chamber 5, and the first partition 7 divides the inside of the return chamber 5 into an entire air conditioner side chamber 9 and a return duct side chamber. A second partition 11 is provided in the chamber for the return duct, and the second partition 11 divides the chamber for the return duct into a chamber 13 for communicating with the return duct and a chamber for the chamber not for the return. A third partition 15 is further provided in the chamber chamber that does not communicate with the return duct, and the third partition 15 divides the chamber chamber that does not communicate with the return duct into an exhaust side chamber chamber 17 and a bypass chamber chamber 19. That is, the inside of the return chamber 5 is divided into four sections by the first partition 7, the second partition 11, and the third partition 15.

A first damper 21 is provided on the first partition wall 7 in a portion sandwiched between the overall air conditioner side chamber chamber 9 and the return chamber chamber 13. The first damper 21 is provided in the entire air conditioner side chamber chamber 9 and the return chamber. The chamber 13 can be freely connected and disconnected. Further, a second damper 23 is provided on the first partition wall 7 in a portion sandwiched between the overall air conditioner side chamber chamber 9 and the bypass chamber chamber 19, and the second damper 23 is provided in the overall air conditioner side chamber chamber 9 and the bypass chamber chamber. 19 can be freely connected or disconnected.

By the way, the condenser 25 of the individual air conditioner 3 is provided on the second partition wall 11 between the return chamber chamber 13 and the bypass chamber chamber 19, and the condenser 25 is connected to the bypass chamber from the return chamber chamber 13. The return air flowing into the chamber 19 passes through. That is,
The condenser 25 exchanges heat with this return air. Further, a third damper 27 is provided on the second partition wall 11 in a portion sandwiched between the retan chamber chamber 13 and the exhaust side chamber chamber 17, and the third damper 27 connects the retan chamber chamber 13 and the exhaust side chamber chamber 17 to each other. It can be shut off. Further, a fourth damper 29 is provided on the third partition wall 15 in a portion sandwiched between the exhaust side chamber chamber 17 and the bypass chamber chamber 19, and the fourth damper 29 connects the exhaust side chamber chamber 17 and the bypass chamber chamber 19 to each other.・ Can be shut off freely.

An exhaust duct having an excess exhaust fan 31 is connected to the exhaust side chamber chamber 17, and the excess exhaust fan 3
1 is configured to exhaust the excess air (EA) in the exhaust side chamber chamber 17 to the outside. In addition, an OA duct is connected to the overall air conditioner-side chamber room 9 so that fresh air can be taken in from the OA duct. The first damper 21, the second damper 23, and the third damper 2 described above are used.
7. A programmable sequencer or the like (not shown) is connected to the fourth damper 29, and each of them is automatically opened and closed independently in a preset operation mode.

The operation of the heat recovery type air conditioning system configured as above will be described. Overall air conditioner 1 and individual air conditioner 3
In the same mode, for example, when both are in the cooling operation, the first damper 21 and the fourth damper 29 are opened and the second damper 23 and the third damper 27 are closed (see FIG. 1). . Therefore, the cool air cooled to the room temperature level collected in the return chamber 13 is supplied to the first damper 21.
To flow into the overall air conditioner-side chamber chamber 9 and to flow into the bypass chamber chamber 19 after passing through the condenser 25. The return air that has flowed into the overall air conditioner-side chamber chamber 9 is mixed with the fresh air from the OA duct and is collected again in the overall air conditioner 1. The return air that has passed through the condenser 25 and flown into the bypass chamber 19 passes through the fourth damper 29 and flows into the exhaust chamber 17 and is exhausted by the surplus exhaust fan 31. At this time, since the return air is cool air, the condenser 2
5 is effectively cooled, and the cooling operation efficiency of the individual air conditioner 3 is improved. In other words, the cold exhaust heat is recovered from the exhausted return air.

On the other hand, when the general air conditioner 1 and the individual air conditioner 3 are in different modes of cooling and heating operation, for example, the general air conditioner 1
When the individual air conditioner 3 is in the heating operation and the individual air conditioner 3 is in the cooling operation, the second damper 23 and the third damper 27 are opened, the first damper 21 is in a half-open state, and the fourth damper 29 is closed (see FIG. 2). . Therefore, the warm air warmed to the room temperature level recovered in the return chamber 13 passes through the first damper 21 and flows into the overall air conditioner side chamber 9.
It branches into three systems: one that passes through the condenser 25 and flows into the bypass chamber chamber 19, and one that further passes through the third damper 27 and flows into the exhaust side chamber chamber 17. The return air that has flowed into the overall air conditioner-side chamber chamber 9 is mixed with the fresh air from the OA duct and is collected again in the overall air conditioner 1. The return air that has passed through the condenser 25 and flowed into the bypass chamber 19 is also the second damper 2
After passing through 3, the air flows into the chamber room 9 on the side of the general air conditioner, is mixed with fresh air, and is collected again in the general air conditioner 1. Further, the return air that has flowed into the exhaust side chamber chamber 17 is exhausted by the surplus exhaust fan 31. At this time,
Since the individual air conditioner 3 is in the cooling operation, the heat of heat is exhausted from the condenser 25, and this heat of heat raises the temperature of the return air passing through the condenser 25 to contribute to the heating operation of the overall air conditioner 1. . That is, the hot exhaust heat from the condenser 25 is recovered.

As described above, according to the above-mentioned heat recovery type air conditioning system, the cold heat exhaustion of the individual air conditioner 3 which has been conventionally discarded to the outside contributes to the improvement of the operation efficiency of the whole air conditioner 1.
At the same time as being collected, the cold heat at room temperature, which was discharged through the excess air, improves the capacity of the condenser 25 and is collected.

[0015]

As described in detail above, in the heat recovery type air conditioning system according to the present invention, the retan chamber is connected to the entire air conditioner, the condenser of the individual air conditioner is installed in the retan chamber, and the damper is installed. Since the air passage can be freely switched by the partition wall provided, the exhaust heat can be recovered from the exhausted return air and the exhaust heat from the condenser can also be recovered. As a result, the exhaust heat generated in each air conditioning system is effectively used, and the air conditioning running cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a heat recovery type air conditioning system of the present invention in the same operation mode.

FIG. 2 is an explanatory view showing a heat recovery type air conditioning system of the present invention in different operation modes.

[Explanation of Codes] 1 overall air conditioner 3 individual air conditioner 5 retan chamber 7 first partition 9 overall air conditioner side chamber chamber 11 second partition 13 retan chamber chamber 15 third partition 17 exhaust side chamber chamber 19 bypass chamber chamber 21 1 damper 23 2nd damper 25 condenser 27 3rd damper 29 4th damper

Claims (1)

[Scope of utility model registration request] 1. An individual air conditioner is provided separately from the entire air conditioner,
A heat recovery air conditioning system for recovering the cold exhaust heat of one air conditioner by contributing to the improvement of the operating efficiency of the other air conditioner, wherein a retan chamber to which a return duct is connected is connected to the overall air conditioner, By providing a first partition in the retan chamber, the interior of the retan chamber is divided into a chamber room on the air conditioner side and a chamber room on the retan duct side, and by providing a second partition on the chamber room on the retan duct side, the chamber room on the retan duct side is formed. Is divided into a chamber that does not communicate with the retan duct and a chamber that does not communicate with the retan duct, and by providing a third partition in the chamber that does not communicate with the retan duct, the chamber chamber that does not communicate with the retan duct becomes an exhaust chamber chamber and a bypass chamber chamber. The first air conditioner side chamber chamber and the return chamber chamber chamber. A first damper is provided on the partition wall, and a second damper is provided on the first partition wall in a portion sandwiched between the entire air conditioner side chamber chamber and the bypass chamber chamber, and the second damper is provided in the portion sandwiched between the return chamber chamber and the bypass chamber chamber. A condenser for an individual air conditioner is provided on the two partition walls, and a third damper is provided on the second partition wall in the portion sandwiched between the return chamber chamber and the exhaust side chamber chamber, and a portion sandwiched between the exhaust side chamber chamber and the bypass chamber chamber. A heat recovery air-conditioning system, characterized in that a fourth damper is provided on the third partition.