JPH01300131A - Air conditioning ventilator - Google Patents

Abstract

PURPOSE:To contrive an air conditioning ventilator capable of uniformizing room temperature, without increasing the capacity of a circulating fan by providing an air passage for bypassing an air-conditioning heat exchanger for room air, and providing an opening/closing bypass damper in the air passage. CONSTITUTION:Room air sucked in through an interior suction port 2b is discharged from discharging ports 15a, 15b of a room air-circulating fan 9, is passed through an air conditioning heat exchanger 8 for room air, and is discharged through an interior discharging port 3 by the fan 9, which is disposed in a main body 17 of an air conditioning ventilator. A bypass damper 1 for forming a bypass air passage 1a is provided on the discharging port (15b) side of the heat exchanger 8. The outside air sucked in through an exterior suction port 4 by an outside air suction fan 6 disposed in the main body 17 of the air conditioning ventilator is subjected to exchange of heat with the room air to be discharged to the exterior, while flowing through a total heat-exchanging element 10 and a sensible heat-exchanging element 11, and is then blown off through the heat exchanger 8.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an air conditioning and ventilation system that integrates air conditioning and ventilation.
More specifically, the present invention relates to the configuration of a bypass ventilation path of a heat exchanger for indoor air conditioning.

Conventional technology In recent years, as the number of construction starts for apartment complexes has increased significantly,
Air conditioning equipment and ventilation equipment are often installed inside the ceiling, and from the perspective of saving installation space, air conditioning and ventilation equipment that integrates air conditioning and ventilation have come to be used.

Generally, air conditioning ventilation equipment for apartment buildings has a floor area of 100 m.
The air circulation rate for indoor air conditioning was 500 to 600 m''/h, and the ventilation air volume was 100 to 150 m''/h.

Such a conventional air conditioning ventilation system will be explained based on FIGS. 7 and 8. In the figure, outdoor air is sucked in through an outdoor suction port 104 provided in the main body 101 of the air conditioning ventilation system, passes through a square prism total heat exchange element 11Q1, a square prism sensible heat exchange element 111, and is sent to a blower for sucking outside air. 106 into the ventilation passage 112, passed through the heat exchanger 10B for indoor air conditioning, and was supplied to the indoor discharge port 103.

In addition, a part of the indoor air is sucked in through the indoor suction port 102a, and if sensible heat exchange is advantageous from the viewpoint of energy saving depending on the conditions of the indoor air and outdoor air, the sensible heat exchange element 11
The damper 113 above 1 was opened as shown in FIG. 7, and air was discharged to the outdoor outlet 106 by the indoor air blower 107 through the rectangular prism sensible heat exchange element 111. When total heat exchange ventilation is advantageous, as shown in FIG.
13 is in a closed state, and the damper 114 above the square prism total heat exchange element 110 is in an open state, so the indoor air sucked from the indoor side suction port 102a passes through the square prism total heat exchange element 110. The air was discharged to the outdoor outlet 105 by a blower 107 for discharging indoor air.

Most of the indoor air is sucked in through the indoor suction port 102b, passes through the indoor air conditioning heat exchanger 108 by the indoor air circulation blower 109, and is then sucked into the indoor air outlet 103.
was supplied to.

Problems to be Solved by the Invention In the conventional air conditioning ventilation system, all indoor circulating air passes through a heat exchanger for indoor air conditioning, so the wind speed of the conditioned air is affected by the pressure loss of the heat exchanger. The problem was that the temperature was small and the room temperature was uneven.

The present invention solves the above-mentioned conventional problems, and aims to provide an air conditioning ventilation system that can make the room temperature uniform without increasing the capacity of the circulation blower.

Means for Solving the Problems In order to solve this problem, the present invention provides heat dissipation between the outside air drawn into the room by the outside air intake blower and the indoor air discharged outdoors by the indoor air discharge blower. A ventilation heat exchanger that performs exchange, an indoor air conditioning heat exchanger, and an indoor air circulation blower that discharges air introduced from the indoor air intake into the room again via the air conditioning heat exchanger. ,
The air conditioner is provided with a ventilation passage that bypasses the heat exchanger for indoor air conditioning, and a bypass damper for opening and closing is provided in the ventilation passage.

Effect According to the above configuration, when the bypass damper is opened, a part of the indoor air can be discharged without suffering pressure loss in the heat exchanger, increasing the discharge speed of the indoor air and making the room temperature uniform. can be converted into

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 6. In the figure, the indoor air sucked from the indoor suction port 2b is transferred to the outlet 15 of the blower for indoor air circulation.
A blower 9 for indoor air circulation is provided in the main body 17 of the air conditioning ventilation system, and the air is discharged from the air outlet 15b, passes through the heat exchanger 8 for indoor air conditioning, and is discharged from the indoor outlet 3. Furthermore, a bypass damper 1 for forming a bypass ventilation path 1a is provided on the discharge port 16b side of the blower for indoor air circulation of the heat exchanger 8 for indoor air conditioning.

Furthermore, the outside air sucked in from the outdoor side suction port 4 by the outside air suction blower 6 provided in the main body 17 of the air conditioning ventilation system is transferred to the total heat exchange element 10. After exchanging heat with the indoor air discharged outdoors through the sensible heat exchange element 11, the ventilation passage 12, the outlet port 16 of the ventilation passage, and the indoor air conditioning heat exchanger 8 and is discharged to the indoor discharge port 3. In addition, the main body 17 is
From the viewpoint of energy saving, the indoor air sucked in from the indoor suction port 2a provided in 10. Alternatively, the air is passed through one of the sensible heat exchange elements 11 to exchange heat with the outside air sucked in from outside, and then is discharged to the outside outlet 6 .

In the above configuration, the indoor temperature distribution tends to become uneven during heating and when starting cooling or heating operation, so the air volume from the indoor outlet 3 of the air conditioning ventilation system is increased and the air speed is increased. When it is desired to make the temperature distribution of the room temperature uniform, the bypass damper 1 is placed at the position indicated by the dashed line in FIG. That is, the bypass damper 1 is opened as shown in FIG. 6 during total heat exchange, and as shown in FIG. 4 during sensible heat exchange. As a result, the air sucked in from the indoor air intake port 2b by the indoor air circulation air blower 9 is transferred to the air outlet ports 15a and 1 of the indoor air circulation air blower.
5b, a bypass draft g1a is formed, and most of the air discharged from the discharge port 15b bypasses the indoor air conditioning heat exchanger 8, so that the pressure of the heat exchanger 8 Large air volume can be obtained without being affected by loss.

On the other hand, when the temperature distribution is good even when the blowing air velocity is relatively low, such as during cooling, the bypass damper 1 in FIG. All of the indoor air sucked through the suction port 2b passes through a heat exchanger 8 for indoor air conditioning and is discharged to the indoor air outlet 3. That is, the bypass damper 1 is closed as shown in FIG. 3 during sensible heat exchange, and as shown in FIG. 6 during total heat exchange.

Note that the operation of the ventilation section is the same as in the conventional example, so a description thereof will be omitted. Further, in the above embodiment, both a total heat exchange element and a sensible heat exchange element are used as the ventilation heat exchanger, but the effect of the present invention is the same even if either one is used.

As described above, according to this embodiment, since a bypass ventilation path is formed when necessary, the indoor circulating air is not affected by the pressure loss of the heat exchanger for indoor air conditioning, and the blowing wind speed is high. Therefore, the indoor temperature distribution can be improved.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, by providing a bypass ventilation path that bypasses the heat exchanger for indoor air conditioning when necessary, the heat exchanger for indoor air conditioning can be improved. Since it is not affected by pressure loss, a sufficient amount of discharged air can be obtained without increasing the capacity of the blower for indoor air circulation, and the temperature distribution in the room can be improved.

[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 a perspective view showing the operating state of sensible heat exchange ventilation with the bypass damper closed. , Fig. 4 is a perspective view showing the operating state of sensible heat exchange ventilation with the bypass damper open, and Fig. 6 is a perspective view showing the operating state of total heat exchange ventilation with the bypass damper closed. FIG. 7 is a perspective view showing the operation state of total heat exchange ventilation with the bypass damper opened, and FIGS. 7 and 8 are perspective views showing the internal structure of a conventional air conditioning ventilation system. 1... Bypass damper, 1a... Bypass ventilation path, 6... Blower for outside air intake, 7
...Blower for discharging indoor air, 8...
Heat exchanger for indoor air conditioning, 9...Blower for indoor air circulation, 16a. 16b...Blower outlet for indoor air circulation. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
・Start 1 Ha'' to the No. 1 Figure 1a-1-Pa 1st gallery jEach C--5lL for Gaikashima - N11j

Claims (1)

[Claims] A ventilation heat exchanger that exchanges heat between outside air drawn into a room by an outside air intake blower and indoor air discharged outdoors by an indoor air discharge blower, and an indoor air conditioning heat exchanger; A blower for indoor air circulation that discharges the air introduced from the indoor side suction port into the room again via the air conditioning heat exchanger, and a ventilation path that bypasses the indoor air conditioning heat exchanger, and the ventilation The road is equipped with an air conditioning ventilation system equipped with a bypass damper.