JPS6273027A - Ventilating device with heat exchanger of built-in ceiling type - Google Patents

Abstract

PURPOSE:To reduce the height and noise, and make inspection easier, by disposing two heat exchangers in width direction with longitudinal edges thereof abutted each other, providing the heat exchangers between an outdoor air blow- off port and a discharge air intake port, and intake and discharge fan, and also providing an inspection door on the opposite side of the outdoors. CONSTITUTION:Adjacent edges of a first heat exchanger 4a and a second heat exchanger 4b are connected each other by means of a partition plate 12a. Drawn through an outdoor air inlet grille 17, outdoor air A passes through a duct 18 and an air intake port 5 into an inlet chamber 9a and exchanges heat with discharge air B in the first and second heat exchangers 4a, 4b after passing through filters 10a and 10b. And then, said outdoor air A enters outdoor air feed chamber 11a, 11b, to be pressurized by means of a fan for inlet air provided thereunder and is blown into ducts 19a, 19b from outdoor blow-off ports 6a, 6b to be blown through grilles 21a, 21b into the inside of a room. Inspection and cleaning are carried out with an inspection hole 26 and an inspection door 16 opened.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a ceiling-mounted heat exchanger that is installed in the ceiling and ventilates the room while exchanging heat between the exhaust air from the room and the intake air from the outside. This relates to a ventilation system with an exchanger.

[Conventional technology]

Figures 5 to 7 show conventional examples of this type of device, as disclosed in, for example, Japanese Utility Model Application Publication No. 58-104824. (3) is an intake blower that sucks in outside air A, and (3) sucks in dirty exhaust air B from indoors.
(4) is a rectangular parallelepiped heat exchanger that exchanges heat between exhaust air B from indoors and intake air A from outdoors; (5) is a ridge line (4C) of heat exchanger (4). ) is provided on the front surface (1a) of the outer box il+ at right angles to an outside air outlet (7) for discharging outside air A heat exchanged by the exchange air (4) into the room
) is provided on the back side (1b) of the outer box, and the exhaust air intake port sucks the exhaust air B from the room. An exhaust port that discharges the exhaust gas B to the outside, (9) is an outside air suction chamber formed between the outside air intake port (5) and the heat exchanger (4), and α is an outside air suction chamber formed between the outside air intake port (5) and the heat exchanger (4). The outside air filter aυ is installed and removes dust from the outside air A, and aυ is the outside air supply chamber 1 MP formed between the outside air discharge side of the heat exchanger (4) and the outside air outlet (6).
The separating plate α(A) is installed on the exhaust suction side of the heat exchanger (4) and is an exhaust filter that removes dust in the exhaust B, and Q51 is attached to the exhaust discharge side of the heat exchanger (4). Exhaust port (8
) an exhaust chamber formed between a. The outer box (1) is provided with two heat exchangers (4) and a filter for outside air and an exhaust air. Inspection door for cleaning and inspection of α(.

aS is an outside air intake duct that is connected to the outside air intake port (5) and penetrates the outer wall @, (171 is an outside air intake grill that can be seen in several cases at the tip of the outside air intake duct 0 seconds, and α9 is an outside air outlet (6)
(19a) (19b) is an outside air blowing duct that branches outside air A into two directions from the T-tube (2Da) and blows it into the room. , (21a) and (21b) are outside air blowing ducts (
19a) an indoor outlet grill connected to (19b);
(22a) (22b) sucks exhaust B from the room,
(23a) (23b) The indoor suction grille, Q3, is connected to the joined exhaust air B (8) by a T-shaped pipe (2ob), and the exhaust duct penetrates the outer wall (23a).
C) is an exhaust grill attached to the tip of the exhaust duct.

No is an inspection hole formed in the ceiling surface (not shown).

With the above structure, fresh outdoor air A is sent to the outside wall □□
The outside air is sucked in from the outside air intake grill αη provided in After removing dust, the air exchanges heat with the exhaust air B in the heat exchanger (4) and enters the outside air supply chamber αυ.

Pressurized by the intake blower (2) and the outside air outlet (6)
The air is guided from the outside air guide duct σ9 to the T-shaped pipe (20a).
The outside air is divided into the outside air blowing ducts (19a) and (19b), and is blown into the room from the two indoor air blowing grilles (21a) and (21b).

On the other hand, exhaust air B from the room is discharged from the indoor suction grill (22a) (
22b) into the exhaust suction ducts (23a) and (25b).

It is joined to the exhaust guide duct a through a T-shaped pipe (2ob).

Exhaust air is sucked into the exhaust suction chamber αJ from the exhaust suction port (7) of the outer box (1), and after removing dust in the exhaust air through the exhaust filter A4, it is exchanged with outside air A in the heat exchanger (4). After exchanging heat, it enters the exhaust chamber q9, is pressurized by the exhaust blower (3), and is blown into the exhaust duct Q core from the exhaust port (8) of the outer box (1), and is then blown into the exhaust grill (Q) provided on the outer wall. (to) is discharged outdoors.

When inspecting or cleaning the heat exchanger (4) and the outside air and exhaust filter alQ4], open the inspection hole (to) provided in the ceiling, put the upper half of your body in the ceiling, and then open the outer box (1). ) Open the inspection door σe and perform inspection 2 cleaning 0 [Problems to be solved by the invention] The conventional device configured as described above has a large height due to the large cross-sectional dimension of the heat exchanger. However, it may be difficult to install it behind the ceiling.

Since the blower, which is the source of the noise, is close to the outside air outlet and the exhaust air inlet that open into the room, there is a problem in that the noise transmitted into the room is large. In addition, when there are two outside air outlets and two intake inlets, it is necessary to use a T-shaped pipe to branch or merge the intake and exhaust air, which poses a problem in that pressure loss makes it difficult to expand. .

This invention was made to solve two or more problems, and it reduces the height of the device and reduces the noise transmitted into the room.

The object of the present invention is to provide a ceiling-embedded type ventilation system with a heat exchanger which has two outside air outlets and two air intakes, but which reduces the decrease in air volume and has excellent maintenance and inspection workability.

[Means for solving problems]

The first and second heat exchangers with reduced dimensions between opposing ridgelines are disposed in the width direction with the longitudinal ridgelines touching, and the outside air outlet and exhaust inlet open to the indoor side of the outer box reduce noise. A heat exchanger is installed between the intake and exhaust air blowers.

The inspection door is provided on the opposite side of the outer box from the outdoor side.

[Effect]

There is no need to increase the height of the attic, the noise transmitted into the room is reduced, and even if there are two outside air outlets and two air intakes, there is less decrease in air volume, and maintenance and inspection are easier. Become.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In the figures, the same reference numerals as in FIGS. 5 to 1 indicate the same or corresponding parts, and (4a) and (4b) are the first and second heat exchangers with reduced dimensions between the opposing ridgelines (4C); The first heat exchanger (4a) and the second heat exchanger (4b) are connected by a partition plate (12a) between the adjacent ridgelines (4C), and between the outer ridgeline (4C) and the outer box 1)1. The partition plate is the sediment chamber, (1)a) (1)b) is the partition plate (12b)
(12c) and the outside air supply chamber formed between the upper plate of the outer box fi+, (15a) (13b) is the partition plate (12b)
(12c) and the exhaust suction chamber formed between the lower plate of the outer box (1), (6a) and (6b) are the outside air supply chambers (1)a) (
an outside air outlet that blows outside air A into the room from 1l b);
(7a) and (7b) are exhaust intake ports that suck exhaust gas B from the room and supply it to the exhaust gas intake chambers (13a) and (13b);
(10a) and (10b) are outside air filters that remove dust from outside air A, and (14a) and (14b) are exhaust filters that remove dust from exhaust air B.

With the above structure, fresh outdoor air A is sucked in from the outside air intake grille [17+] provided on the outer wall ■, passes through the outside air intake duct α ladder, and enters the outside air intake port (5) of the outer box fi1.
Enter the outside air suction chamber (9a) through the outside air filter (1).
0a) After removing dust from the outside air using (10b).

It exchanges heat with the exhaust air B in the first and second heat exchangers (4a) (4b), enters the outside air supply chamber (1)a) (1)b), and is heated by the intake blower (2). The outside air blowing duct (19a) (1
9b) into the indoor outlet grille (21a) (2
1b) into the room.

On the other hand, exhaust air B from the room is discharged from the indoor suction grill (22a) (
22b) to exhaust suction duct) (23a) (23b)
sucked into.

The exhaust air is sucked into the exhaust suction chamber (13a) (131)) from the exhaust suction ports (7a) (7b) of the outer box fl), and the dust in the exhaust air is removed by the exhaust filters (14a) (14b). It exchanges heat with outside air A in the first and second heat exchangers (4a) (4b), enters the exhaust chamber (15a), is pressurized by the exhaust blower +31, and passes through the exhaust port of the outer box (1). (
8) From exhaust duct c! 4 and is discharged outdoors through an exhaust grill (c) provided on the outer wall @.

Also, when inspecting or cleaning the first and second heat exchangers (4a) (4b), outside air filters (10a) (10b), and exhaust filters (14a) (14b), use the Open the inspection port■ and put your upper body into the attic.

Open the inspection door αG on the outer box (Sato) to perform inspection and cleaning.

Since there are no obstacles such as ducts around the inspection door Q9, inspection and cleaning operations can be easily performed.

〔Effect of the invention〕

As explained above, in this invention, the height of the device is reduced, so it can be easily installed in the ceiling, and the noise generated from the blower is transmitted through the heat exchanger. Therefore, the noise level inside the room is lower, and there is no need to use T-shaped pipes even though there are two outside air outlets and two air intakes, so there is almost no decrease in ventilation volume. By changing the position of the inspection door, the work space becomes wider, which makes maintenance and inspection work easier.

[Brief explanation of drawings]

1 to 4 show an embodiment of this invention. Figure 1 is a front view, Figure 2 is a plan view, Figure 3 is a side view, Figure 4 is an explanatory diagram showing the flow of piping and air intake and exhaust in the ceiling, and Figures 5 to γ show the conventional example. Show. FIG. 5 is a front view, FIG. 6 is a plan view, and FIG. 1 is an explanatory diagram showing the flow of piping and air intake and exhaust in the ceiling. In the figures, the same reference numerals indicate the same or equivalent parts, (
1) is the outer box, (4a) is the first heat exchanger, (4b)
is the second heat exchanger, (4C) is the ridgeline, (5) is the outside air intake port, (6a) (6b) is the outside air outlet, (7a
) (7b) is the exhaust intake port, (8) is the exhaust port, Qe is the inspection door, αυ is the outside air suction duct), (19a) (19b) is the outside air blowing duct, (23a) (23b) is the exhaust suction duct, QA is the exhaust duct, @ is the outer wall.

Claims (2)

[Claims] (1) A heat exchanger that is housed in an outer box and is made of a rectangular parallelepiped that exchanges heat between exhaust gas discharged from the room and intake air sucked in from the outdoors, and an inspection door formed in the outer box. In a ceiling-embedded ventilation system with a heat exchanger, the first and second heat exchangers are arranged in the width direction with their longitudinal ridges touching, and the dimensions of the opposite ridges are reduced, and the above-mentioned inspection door is installed outside the room. A ventilation system with a ceiling-embedded heat exchanger, characterized in that it is installed on the opposite side of the ceiling. (2) An outside air intake duct and an exhaust duct that are connected to the outside air intake and exhaust ports formed on the outdoor side of the outer box and that penetrate the outer wall separating the indoor and outdoor areas, and a pair of outside air intake ducts and exhaust ducts that are The ceiling-embedded type according to claim 1, characterized in that a pair of outside air blow-off ducts are connected to the outside air blow-off port, and a pair of exhaust suction ducts are connected to the pair of exhaust air intake ports. Ventilation system with heat exchanger.