JPH01203829A - Air conditioner - Google Patents

Abstract

PURPOSE:To protect a total heat exchange element and a sensible heat exchange element from dusts and the like of external air through one filter by providing, within an indoor air passage, a first damper for switching a blast passage, which performs the control of introduction of indoor air in a total heat exchange element, and a second damper for switching a blast passage, which performs the control of introduction of indoor air in a sensible heat exchange element. CONSTITUTION:At the time of total heat exchange ventilation, outdoor air is sucked through an outdoor side suction port 6 and is passed through a filter 1, a total heat exchange element 4 and a sensible heat exchange element 5. Then, air is supplied through an indoor side discharge port 19. Indoor air passes the upper side of a blast passage switching damper 3 through an indoor side suction port 8, a passing the total heat exchange element 4 by a damper to conduct a total heat exchange with outdoor air and being discharged through an outdoor side discharge port 7. At the time of a sensitive heat exchange ventilation, outdoor air is sucked through an outdoor side suction port 6 and is passed through the filter 1, total heat exchange element, and sensible heat exchange element 5. Air is supplied through an indoor side discharge port 19. Indoor air passes the sensible heat exchange element 5 from the indoor side suction port 8 by the damper 3 to conduct sensible heat exchange with outdoor and is discharged through the outdoor side discharge port 7. At the time of normal ventilation, dampers 2 and 3 are placed in closed state.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an air conditioning ventilation system that recovers indoor thermal energy to be discharged outdoors, and specifically relates to the arrangement of a filter, a total heat exchange element, and a sensible heat exchange element. .

Conventional technology In recent years, as a means of ventilating a room that is being cooled or heated, a method has been developed to exhaust dirty air from inside the room to the outside, bring in fresh air from outside, and exchange heat between the indoor air and outdoor air. Air conditioning and ventilation systems have come into use that transfer the thermal energy of the exhausted indoor air to outdoor air and recover it indoors.

This type of air conditioning ventilation system uses total heat exchange ventilation during cooling and heating, and sensible heat exchange ventilation when the outside air is humid, such as during the rainy season.
In between spring and autumn, normal ventilation without heat exchange was used.

Conventionally, this type of air conditioning ventilation system has had a configuration as shown in FIGS. 6 to 10. In the figure, inside the main body 101,
An outside air suction fan 112 that sucks outside air through the outdoor side suction port 103 and an indoor air exhaust fan 111 that exhausts indoor air through the outdoor side discharge port 102 are provided. In addition, a total heat exchange element 109 is provided on the discharge port 114 side of the outside air suction blower.
This total heat exchange element protection filter 123, this sensible heat exchange element 110, and this sensible heat exchange element protection filter 124
A room 115 is provided in which the rooms are arranged one above the other.

This room 115 has a total heat exchange element 109 and a sensible heat exchange element 1.
A first ventilation path switching damper 107 provided on the outlet 114 side of the outside air suction blower 112 transfers the air flow to the upper and lower total heat exchange elements 109 and sensible heat. This is a configuration in which each of them is supplied to the exchange element 110.

The upper and lower total heat exchange elements 109 and sensible heat exchange elements 110 are further divided into upper and lower parts, so that airflow A passing through total heat exchange element 109 flows out to the upper part, and airflow B passing through sensible heat exchange element 110 flows out to the lower part. However, the air that has flowed out is discharged into the indoor ventilation passage 116. Further, a second ventilation passage switching damper 108 is provided at a position facing the first ventilation passage switching damper 107, and the first indoor suction port 1
The indoor air sucked through the indoor air suction port 117
is introduced into a room 116 in which a total heat exchange element 109 and a sensible heat exchange element 110 are arranged. The second ventilation path switching damper 108 is configured to form an airflow C that sends indoor air to the total heat exchange element 109 and an airflow that sends indoor air to the sensible heat exchange element 11o. Switch the damper. The airflows C and D that have passed through each heat exchange element 109 and 110 are transferred to the room 1 where the indoor air discharge blower 111 is installed.
18 and is discharged through the outdoor outlet 102.

In addition, the indoor air passage 122 is connected to the room 118, and the opening/closing with this room is controlled by a third ventilation passage switching damper 1°C.
This is a configuration performed by. This indoor air passage 122 is the first
It is configured to communicate with the indoor side suction port 104 of the. In addition, 119 is an indoor heat exchanger, and the second indoor suction port 12
Indoor air sucked in from zero is passed through to perform indoor air conditioning and also exchange heat with ventilation air flowing out from the ventilation passage 116.

Reference numeral 121 denotes a blower for indoor air circulation, which sucks in air from the second indoor side suction port 120 and discharges the air after heat exchange through the indoor side discharge port 105 to circulate the indoor air. The operation of the above configuration will be explained with reference to FIGS. 8 to 10.

In the case of total heat exchange ventilation, as shown in FIG. The air passes through the heat exchange element protection filter 123 and the total heat exchange element 109, flows into the ventilation passage 116, and is supplied into the room through the indoor side discharge port 105. In addition, indoor air is supplied to the indoor air intake port 11 from the first indoor air intake port 104.
7, passes above the second ventilation path switching damper 108, passes through the total heat exchange element 109, and is discharged to the outdoor outlet 102 by the indoor air discharge blower 111. In this case, the third ventilation path switching damper is closed.

In the case of sensible heat exchange ventilation, as shown in FIG. After passing through the exchange element protection filter 124 and the sensible heat exchange element 110, the air is discharged from the indoor air discharge outlet 102 by the indoor air discharge blower 111. In this case, the third ventilation path switching damper is closed.

In the case of normal ventilation, as shown in FIG. 10, outdoor air is sucked in by the outdoor air suction blower 112 from the outdoor side suction port 103, and is passed through the lower side of the first ventilation path switching damper 107 for sensible heat exchange. Air passes through the element protection filter 124 and the sensible heat exchange element 110, and is supplied into M from the indoor discharge port 105.

In addition, the indoor air is sucked in through the indoor suction port 104,
Indoor air passage 122, third ventilation passage switching damper 10
6, the air is discharged to the indoor air discharge blower 111 and then to the outdoor outlet 102. In this case, the ventilation path switching damper 106 of the tube 3 is open.

Problems to be Solved by the Invention However, in the configuration of conventional air conditioning ventilation equipment, total heat exchange ventilation,
In order to enable 8 heat 5F, exchange ventilation and normal ventilation, two filters are required: a filter for protecting the total heat exchange element and a filter for protecting sensible heat exchange confectionery, and maintenance such as cleaning the filters is complicated. Ta.

The present invention is intended to solve these problems, and aims to reduce the number of filters and facilitate maintenance such as filter cleaning.

Means for Solving the Problems In order to achieve the above object, the present invention arranges a filter, a total heat exchange element, and a sensible heat exchange element in series in a ventilation passage, and introduces outdoor air into an indoor heat exchanger through these. The room is divided into two rooms (an outdoor air ventilation path where each of the heat exchange elements is located, and an outdoor air ventilation path where each of the heat exchange elements is located), and one side of the room is connected to the indoor air intake port, and the other room is divided into two rooms. The side surface is an indoor air ventilation path that connects to the indoor air inflow side and the indoor air outlet of each of the heat exchange elements, and the air in the indoor air ventilation path is introduced into the other rooms through the m5F and the exchanger. and a heat exchange air ventilation passage communicating with the indoor air outlet, and in the indoor air ventilation passage, a first ventilation passage switching damper for controlling introduction of indoor air to the total heat exchange element; This is a configuration in which the sensible heat exchange element is provided with a second ventilation path switching damper that controls the introduction of indoor air.

Effect With this configuration, during total heat exchange ventilation, when outdoor air passes through the outdoor air ventilation path, the filter, total heat exchange element,
Air is passed through the sensible heat exchange element and then supplied to the indoor heat exchanger. Further, indoor air enters the indoor air ventilation path from the indoor air intake port, passes through a total heat exchange element by the first ventilation path switching damper, and complete heat exchange is performed between the indoor air and outdoor air. This exchanged air is led out to the indoor air outlet side via the heat conversion air ventilation path.

During sensible heat conversion ventilation, the indoor air passes through the sensible heat exchange element 9 by the second ventilation path switching damper, and the indoor air and outdoor air perform wA heat exchange. After this conversion, the indoor air is exhausted through the indoor air outlet side.

During normal ventilation, outdoor air is led out to the indoor heat exchanger via the outdoor air ventilation duct, while indoor air flows into the indoor air ventilation duct from the indoor air suction port. Since the damper is in the closed state, the indoor air is drawn out from the other side of the indoor air ventilation path to the indoor air discharge side without performing heat exchange.

Therefore, one filter can prevent the total heat exchange element and the sensible heat exchange element from being clogged with dust and the like.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 6.

The configuration of the air conditioning ventilation system in this example is shown in FIGS. 1 and 2. In the figure, an outdoor air ventilation path 12 is provided in the main body 11, which introduces outdoor air from an outdoor side suction port 6 and leads it out to a heat exchanger 16 disposed near an indoor side discharge port 19. In this outdoor air ventilation path 12, a filter 1, a square columnar total heat exchange element 4, and a heat exchanger element 6 are provided in series. These filters 1 and heat exchange elements 4.6 transfer outdoor air laterally, indoor air laterally,
The structure is such that indoor air flows vertically to exchange heat. Further, a blower 10 for sucking outdoor air is disposed in the middle of the outdoor air ventilation path 12 located on the leeward side of the filter 1 and the heat exchange elements 4 and 5, and the outdoor air is transferred to a heat exchanger 16.
It looks like it's hitting me. Furthermore, the interior of the main body 11 is divided into two chambers by the outdoor air ventilation path 12 in which the filter 1 and the heat exchange element 4.6 are located. That is, an indoor air ventilation path 14 is formed upward, with one side communicating with the first indoor air intake port 8 and the other side communicating with an indoor air discharge ventilation path 13 in which a blower 9 for discharging indoor air is arranged. , forming a heat exchange air ventilation path 16 into which the air that has passed through the heat conversion elements 4 and 6 flows downward, and this ventilation path 16 is also connected to the indoor air discharge ventilation path 1.
3 has been contacted. In the indoor air ventilation passage 14,
First and second ventilation path switching dampers 2 for passing inflowing indoor air in the longitudinal direction of each heat exchange element 4, 6
, 3 are provided.

In addition, 17 is a second indoor side suction port, and the indoor circulation blower 18 sucks the indoor air through the suction port 17, and after passing it through the indoor heat exchanger 16, it is sent indoors through the indoor side discharge port 19. Discharge. The operation in the above-mentioned cutting will be explained with reference to FIGS. 3 to 6.

As shown in FIG. 3, during total heat exchange ventilation, outdoor air is sucked into the outdoor air ventilation passage 12 through the outdoor side suction port 6 provided in the main body 11, and the filter 1, the square columnar total heat exchange element 4, After passing through the square prism sensible heat exchange element 6, the air is supplied to the indoor side discharge port 19 via the outdoor air suction blower 10 and the indoor heat exchanger 16. On the other hand, indoor air is sucked into the indoor circular air ventilation passage 14 through the first indoor suction port 8, and
The first ventilation path switching damper 2 (closed state) allows the outdoor air to flow horizontally through the quadrangular prism total heat exchange element 4. exchanges total heat with After this heat exchange, the indoor air enters the heat conversion air ventilation path 16, passes through the indoor air discharge ventilation path 13, and is exhausted by the indoor air discharge blower 9 to the outdoor discharge lower.

During sensible heat exchange ventilation, as shown in FIG. 4, outdoor air is sucked into the outdoor air ventilation passage 12 through the outdoor suction port 6 provided in the main body 11, and the filter 1, the square columnar total heat exchange element 4, After passing through the rectangular prism-shaped sensible heat exchange element 6, the indoor air is supplied into the room via the indoor side outlet 19 by the outdoor air suction blower 1o.
It is sucked in by the second ventilation path switching damper 3 (in the open state) and passed through the square prism sensible heat exchange element 6 in the vertical direction.
During this passage, sensible heat is exchanged with the outdoor air flowing laterally. After heat exchange, the indoor air enters the heat exchange air ventilation passage 16,
The indoor air is discharged through the indoor air discharge passage 13, to the indoor air discharge blower 9, and then to the outdoor discharge lower. In addition,
The first ventilation path switching damper 2 may be in either an open or closed state. That is, the second ventilation path switching damper 3 causes all of the indoor air flowing into the indoor air ventilation path 14 to flow to the rectangular prism sensible heat exchange element 5, and no indoor air flows to the leeward side.

During normal ventilation, the first and second
The ventilation path switching dampers 2 and 3 are closed, and indoor air is sucked into the indoor air vent 14 through the indoor suction port 8.

This sucked air is transferred to the second ventilation path switching damper 3.
upper side, through the upper side of the first ventilation path switching damper 2;
The indoor air flows out into the indoor air discharge passage 13 and is exhausted by the indoor air discharge blower 9 to the outdoor side discharge lower.

As described above, according to this embodiment, it is possible to protect the total heat exchange element and the sensible heat exchange element from dust and the like in the outside air with one filter.

As is clear from the description of the embodiments above and beyond the effects of the invention, one filter can protect the total heat exchange element and the sensible heat exchange element from dust in the outside air, and the maintenance work for the filter can be reduced. be able to.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view showing an air conditioning ventilation system according to an embodiment of the present invention, FIG. 2 is a sectional view of the same side, and FIG. 3 is an explanatory diagram showing the flow of air during operation of the total heat exchange ventilation. Figure 4 is an explanatory diagram showing the wind flow when the same sensible heat exchange ventilation is operated, Figure 6 is an explanatory diagram showing the wind flow when the same normal ventilation is operated, and Figure 6 is an explanatory diagram showing the wind flow when the conventional air conditioning ventilation system is operated. 7 is a sectional view of the same side, FIG. 8 is an explanatory diagram showing the flow of wind during the total heat exchange ventilation operation, and FIG. 9 is a cross-sectional view of the same side.
The figure is an explanatory diagram showing the flow of wind during the sensible heat exchange ventilation operation, and FIG. 10 is an explanatory diagram showing the flow of the wind during the normal ventilation operation. 1...Filter, 2...First ventilation path switching damper, 3...Second ventilation path switching damper, 4...Square pillar total heat exchange element, 6.
...Square prism sensible heat exchange element, 11 ... Main body, 12 ... Outdoor air ventilation path, 14 ...
- Indoor air ventilation duct, 15...Heat exchange air ventilation duct. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Filter 1f - 110,000 points t2 - Outdoor L near εJ Fig. 5 Fig. 6 Fig. 7 Fig. 10

Claims (1)

[Claims] An outdoor air ventilation duct in which a filter, a total heat exchange element, and a sensible heat exchange element are arranged in series and introduce outdoor air into the indoor heat exchanger through these, and an outdoor air ventilation duct in which each heat exchange element is located. It has a room divided into two by a road,
One side of the room communicates with the indoor air inlet, and the other side serves as an indoor air ventilation path that communicates with the indoor air inflow side and the indoor air outlet of each heat exchange element, and the other room communicates with the indoor air inlet. The air in the ventilation duct is introduced through each of the heat exchange elements and is connected to the indoor air discharge port, and the indoor air ventilation duct introduces the air into the heat exchange element. An air conditioning ventilation system comprising: a first ventilation path switching damper that controls the introduction of indoor air; and a second ventilation path switching damper that controls the introduction of indoor air to the sensible heat exchange element.