JP2020070998A - Air-conditioning ventilation device - Google Patents

Abstract

To provide an air-conditioning ventilation device capable of air-conditioning a plurality of indoor spaces while securing ventilation amount required for 24-hour ventilation.SOLUTION: An air-conditioning ventilation device 10 that supplies temperature-adjusted air to an indoor space R while ventilating the indoor space R includes: a casing 12; outside air intake sections 24, 47 taking outside air into the casing 12; first and second inside air intake sections 38, 23 each taking air in the indoor space R into the casing 12; discharge sections 40, 41 sending out air to be discharged to an outdoor space to outside of the casing 12; and blowout sections 25, 26, 27 blowing out temperature-adjusted air to be supplied to the indoor space R to outside of the casing 12. An operation of inflow amount adjustment means 19 that adjusts air amount in the indoor space R flowing into the casing 12 through the second inside air intake section 23 is controlled on the basis of measurement values obtained by inflow/outflow amount detection means 56 that measures air amount flowing from the outside air intake sections 24, 47 and the first inside air intake section 38 into the casing 12 and air amount flowing out from the discharge sections 40, 41 and the blowout sections 25, 26, 27 to outside of the casing 12.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air conditioning and ventilation device that controls indoor temperature and performs ventilation.

In Japan, the Building Standards Act obliges 24-hour ventilation in which the air in the entire house is replaced in two hours, and a specific example of a device for performing 24-hour ventilation is described in Patent Document 1.
Further, a unit corresponding to an indoor unit is provided in an attic or the like, and air blown from the unit is sent to a plurality of rooms via a duct to perform heating or cooling, and an air conditioner is installed in the building. A specific example of this type of air conditioning equipment is described in Patent Document 2, for example. The amount of air blown into the room from the duct decreases, for example, when the temperature difference between the room temperature and the set temperature for heating is small, and increases when the temperature difference between the room temperature and the set temperature for heating is large.

JP, 2016-20780, A Japanese Patent Laid-Open No. 10-197039

However, when separately providing air conditioning equipment for air conditioning for a plurality of rooms and 24-hour ventilation, there are problems that the number of required parts is large and that a large space for installation is required to be secured. In order to solve these problems, it is conceivable to design a system in which a 24-hour ventilation device and an air conditioning facility are combined, but in this case, air conditioning is performed while securing the ventilation volume required for 24-hour ventilation. Required to do.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air-conditioning ventilator capable of air-conditioning a plurality of rooms while ensuring a ventilation volume required for 24-hour ventilation.

The air-conditioning ventilation device according to the present invention according to the above-mentioned object is an air-conditioning ventilation device for supplying temperature-controlled air to a room while replacing the indoor air with the outdoor air, and a housing, and an outside air that takes in outside air into the housing. Intake part, first and second inside air intake parts for respectively taking in indoor air into the housing, exhaust part for discharging air discharged to the outside to the outside of the housing, and temperature-controlled air supplied to the room A handling unit provided with a blow-out portion for blowing air out of the casing, the amount of air entering the casing from the outside air intake portion and the first inside air intake portion, and the outside of the casing from the discharge portion and the blowout portion. Inflow / outflow amount detecting means for measuring the amount of air, inflow amount adjusting means for adjusting the amount of air in the room that flows into the housing through the second inside air intake portion, and measured values of the inflow / outflow amount detecting means. To And a control means for controlling the operation of the inflow amount regulating means.

The air-conditioning ventilation device according to the present invention is configured such that an outside air intake portion that takes in outside air into the housing, first and second inside air intake portions that take in indoor air into the housing, and air discharged to the outside is sent out of the housing. A handling unit provided with a discharge unit and a blowing unit that blows out the temperature-controlled air supplied to the room outside the casing, the amount of air entering the casing from the outside air intake unit and the first inside air intake unit, and the discharge unit, Inflow / outflow amount detection means for measuring the amount of air discharged from the air outlet to the outside of the housing, inflow amount adjustment means for adjusting the amount of air in the room that flows into the housing through the second inside air intake portion, and inflow / outflow amount detection Since the control means for controlling the operation of the inflow amount adjusting means based on the measured value of the means is provided, the ventilation amount and the air amount to be supplied to each room for air conditioning of a plurality of rooms can be adjusted. Demanded by time ventilation While ensuring that ventilation, it is possible to air-conditioning of several rooms.

It is explanatory drawing of the air-conditioning ventilation apparatus which concerns on one embodiment of this invention. It is explanatory drawing of a handling unit. It is a block diagram which shows the connection of a control means. It is explanatory drawing of the cooling operation in the time zone of daytime. It is explanatory drawing of the cooling operation of the night time zone, and the heating operation of the day time zone.

Subsequently, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
As shown in FIG. 1 and FIG. 2, an air conditioning ventilation device 10 according to an embodiment of the present invention is a device that supplies the temperature-controlled air to the room R while replacing the air in the room R with the outdoor air. A handling unit 11 that takes in outside air and indoor air into the housing 12, sends air discharged outdoors to the outside of the housing 12, adjusts the temperature of the air supplied to the room R, and blows it out of the housing 12. There is. The details will be described below.

As shown in FIGS. 1 and 2, a building S in which the air conditioning ventilation device 10 is installed has a handling unit 11 installed in the attic space, and a PVT panel (an example of a heat collector) P is fixed to the roof. There is. The PVT panel P is a plate-shaped object that collects solar power and collects solar heat, and the temperature rises mainly when collecting solar heat. In the building S, a panel vicinity space (an example of a heat collection vicinity space) Q communicating with the outside is provided near the PVT panel P (in the present embodiment, under the roof where the PVT panel P is fixed). There is. The air in the space Q near the panel is warmed by the heat generated by the PVT panel P and its temperature rises.

The handling unit 11 includes a housing 12, a heat exchanger 13, fans 14, 15, 16, 17, 18 and dampers 19, 20, 21 respectively mounted in the housing 12 (the damper 19 is an example of an inflow amount adjusting means). Is equipped with.
Then, in the handling unit 11, the inside air intake portion 23 (second inside air intake portion) that takes in the air in the room R into the housing 12, the outside air intake portion 24 that takes in the outside air into the housing 12 via the space Q near the panel, and the inside of the room Blow-out parts 25, 26, 27 for discharging the air sent to the R to the outside of the housing 12 are provided.

As shown in FIG. 2, with respect to the heat exchanger 13, the inside air intake portion 23 and the outside air intake portion 24 are located on one side of the housing 12, and the blowout portions 25, 26, 27 are located on the other side of the housing 12. is doing. As shown in FIG. 1, the heat exchanger 13 is connected to the outdoor unit 27 a and exchanges heat between the air passing through the heat exchanger 13 and the refrigerant flowing inside the heat exchanger 13 to exchange heat with the heat exchanger 13. Adjust (increase or decrease) the temperature of the air passing through. The fans 14, 15, and 16 are provided near the blowout portions 25, 26, and 27, respectively.

Air is taken into the housing 12 from the inside air intake portion 23 or the outside air intake portion 24 by operating one or more of the fans 14, 15, and 16, and the air taken into the housing 12 is The temperature is adjusted by passing through the exchanger 13. As shown in FIGS. 1 and 2, the temperature-adjusted air is sent from the blowout portion 25 to the room R through the duct 29 when the fan 14 is operated, and is blown from the blowout portion 26 to the duct 30 when the fan 15 is operated. It is sent to the room R via the blow-out portion 27 via the duct 31 when the fan 16 is operated.

Note that the duct 29 is omitted in FIG. 1. In addition, as shown in FIG. 2, a check valve 32 and a fan 15 that prevent air from flowing into the housing 12 from the blowing portion 25 when the fan 14 is stopped are provided near the blowing portions 25, 26, and 27, respectively. A check valve 33 is provided to prevent air from flowing into the housing 12 from the air outlet 26 when stopped, and a check valve 34 is provided to prevent air from flowing from the air outlet 27 into the housing 12 when the fan 16 is stopped. There is.

In the present embodiment, the blowout portions 25, 26, 27 are respectively the suction port of the duct 29 mounted in the opening formed in the housing 12, the suction port of the duct 30 fixed in the opening formed in the housing 12, And a suction port of the duct 31 fixed to the opening formed in the housing 12. Then, as shown in FIGS. 1 and 2, the inside air intake portion 23 is attached to an opening formed in the housing 12 and includes an outlet of a duct 35 through which air from the room R flows, and the outside air intake portion 24 is The outlet of the duct 36 is attached to the opening formed in the housing 12 and the outside air from the space Q near the panel flows.

The dampers 19 and 20 are provided in the inside air intake portion 23 and the outside air intake portion 24, respectively, and as shown in FIG. 3, are connected to the fans 14, 15, 16, 17, and 18, and are composed of a control means 22 such as a microcomputer. It is connected to the. The control means 22 controls the operations of the fans 14, 15, 16, 17, 18 and the dampers 19, 20 by transmitting a signal.
The damper 19 is actuated by a signal transmitted from the control means 22 to open the inside air intake portion 23 (a state in which the air in the room R can be taken into the housing 12) or in a closed state (air in the room R to the inside of the housing 12). (Practically uncapable). Therefore, the damper 19 adjusts whether the amount of air in the room R flowing into the housing 12 through the inside air intake portion 23 is substantially zero (adjusts the amount of air).

The damper 20 is operated by a signal transmitted from the control means 22 to open the outside air intake portion 24 (a state where the outside air passing through the space Q near the panel can be taken into the housing 12) or a closed state (a panel inside the housing 12). The state in which the outside air that has passed through the neighboring space Q cannot be substantially taken in) is set.
In the present embodiment, the dampers 19 and 20 are dampers whose opening cannot be adjusted, but instead of the dampers 19 and 20, dampers whose opening can be adjusted can be used.

In the handling unit 11, as shown in FIGS. 1 and 2, the inside air intake portion 38 (first inside air intake portion) that takes in the air in the room R into the housing 12 through the duct 37, and the inside air intake portion 38. The total heat exchanger 39 through which the air taken into the housing 12 passes, and the discharge units 40 and 41 through which the air passing through the total heat exchanger 39 and discharged to the outside are respectively sent out of the housing 12 are provided. ing. In the present embodiment, the inside air intake part 38 is composed of the outlet of the duct 37, and the exhaust parts 40 and 41 are composed of the inlets of the ducts 42 and 43 connected to the housing 12, respectively.

The fans 17 and 18 are provided near the discharge section 41 and near the discharge section 40, respectively.
By the operation of the fan 17 or the fan 18, the air in the room R is taken into the housing 12 from the inside air intake portion 38, and the air passes through the total heat exchanger 39. The air that has passed through the total heat exchanger 39 is discharged to the outside of the housing 12 from the discharge portion 40 when the fan 18 is operating, and is sent out through the duct 42 to the outside. When the fan 17 is operating, the air passes through the discharge portion 41 and the housing. 12 is discharged to the outside through the ducts 43 and 36 and the panel vicinity space Q, and is sent to the outside.

The duct 42 is provided with a check valve 44 that prevents the air in the duct 42 (including the outside air) from flowing into the housing 12 through the discharge portion 40 when the fan 18 is stopped. A check valve 45 is provided which prevents the air (including the outside air) in the duct 43 from flowing into the housing 12 through the discharge portion 41 when the fan 17 is stopped.

Further, the handling unit 11 is provided with an outside air intake portion 47 that takes in outside air into the housing 12 via the duct 46. In the present embodiment, the outside air intake portion 47 is composed of the outlet of the duct 46, and the duct 46 is equipped with the filter 48.
The damper 21 provided in the vicinity of the outside air intake portion 47 has a state in which the outside air intake portion 47 is opened (a state in which outside air can be taken into the housing 12) or closed (inside the housing 12) by a signal transmitted from the control means 22. The state where the outside air cannot be substantially taken in).

The outside air taken into the housing 12 from the outside air intake part 47 passes through the total heat exchanger 39, the heat exchanger 13, and is sent to the room R through the outlet parts 25, 26, 27. When passing through the total heat exchanger 39, the outside air is heat-exchanged with the air in the room R that is taken in from the inside air intake section 38 and passes through the total heat exchanger 39, and obtains heat from the air in the room R. To raise the temperature (or heat the air in the room R to lower the temperature).

Further, as shown in FIG. 2, a temperature / humidity sensor 49 for measuring temperature and relative humidity and a pressure sensor 50 for measuring atmospheric pressure are provided in the duct 36, and air in the heat exchanger 13 in the housing 12 is provided. A temperature / humidity sensor 51 for measuring temperature and relative humidity and a pressure sensor 52 for measuring atmospheric pressure are provided on the outlet side. A temperature / humidity sensor 53 that measures temperature and relative humidity is provided in the duct 35, and is provided between the inside air intake portion 38 and the total heat exchanger 39 inside the housing 12 and the outside air intake portion 47 inside the housing 12. Between the and the total heat exchanger 39, pressure sensors 54 and 55 for measuring atmospheric pressure are provided, respectively.

The temperature / humidity sensors 49, 51, 53 and the pressure sensors 50, 52, 54, 55 are connected to the control means 22, as shown in FIG. 3, and the control means 22 controls the temperature / humidity sensors 49, 51, 53 and the pressure. Each measurement value of the sensors 50, 52, 54, 55 can be detected.
In the housing 12, as shown in FIG. 2, there are two partitioned spaces (hereinafter referred to as a first space and a second space).

The air that has passed through the inside air intake portion 23 and the outside air intake portions 24 and 47 flows into the first space in which the heat exchanger 13 is provided, and the air inside the first space blows out from the air outlet portions 25, 26, and 27. Flows out through the first space. Therefore, the air pressure in the flow path where the air flows into the first space is measured by the pressure sensors 50 and 55, and the air pressure in the flow path where the air flows out from the first space is measured by the pressure sensor 52.

The air that has passed through the inside air intake portion 38 flows into the second space, and the air inside the second space flows out of the second space through the discharge portions 40 and 41, so that it flows into the second space. The amount of air that flows is equal to the amount of air that flows out from the second space. The air pressure in the flow path through which air flows into the second space and the flow path through which air flows out from the second space are measured by the pressure sensor 54.
Based on the measured values of the pressure sensors 50, 52, 54, 55, the control means 22 controls the amount of air entering the housing from the outside air intake portions 24, 47 and the inside air intake portion 38, and the discharge portions 40, 41 and blowout. The amount of air that goes out of the housing 12 is derived from the parts 25, 26, and 27. In the present embodiment, as shown in FIG. 3, the inflow / outflow amount detecting means 56 is mainly constituted by the pressure sensors 50, 52, 54, 55.

Then, the control means 22 controls the operation of the damper 19 based on the measured values of the pressure sensors 50, 52, 54, 55 to adjust the amount of air in the room R taken from the inside air intake portion 23 into the housing 12. Then, while adjusting the temperature of the room R, the ventilation amount for supplying the outside air to the room R and discharging the air in the room R to the outside becomes a predetermined amount (the amount in which all the air in the room R is replaced in 2 hours). To

As shown in FIGS. 1 and 3, the control means 22 is connected with an operation panel 57 for performing operations of cooling, heating, dehumidifying and ventilation of the room R and a temperature sensor 58 for measuring the temperature of the outside air. ing.
The control means 22 stops the fan 18 as shown in FIG. 4 when performing the cooling operation during the daytime when the temperature measured by the temperature sensor 58 is equal to or higher than the predetermined temperature T1 (for example, 25 ° C.). In this state, the damper 20 is closed, the dampers 19 and 21 are opened, and the fans 14, 15, 16 and 17 are operated.

As a result, the outside air is taken into the housing 12 via the outside air intake portion 47, the air in the room R is taken into the inside of the housing 12 via the inside air intake portion 23, and the taken-in air (the outside air and the air inside the room R) is heated. After the temperature is adjusted by the exchanger 13, the air in the room R taken into the housing 12 through the inside air intake section 38 is discharged to the total heat exchanger 39 while being supplied to the room R through the blowout sections 25, 26, and 27. It is possible to pass through the portion 41 and the panel vicinity space Q in order and discharge it to the outside.

When the outside air temperature is equal to or higher than the predetermined temperature T1 and the cooling operation is performed during the daytime, the heat in the PVT panel P normally warms the air in the panel near space Q. Therefore, by discharging the air in the room R to the outside through the panel near space Q, it is possible to suppress the heat of the air in the panel near space Q from being transferred to the room R and reduce the load of the cooling operation. ..

On the other hand, the control unit 22 performs the cooling operation during the nighttime period when the temperature measured by the temperature sensor 58 is equal to or lower than the predetermined temperature T2 (for example, 25 ° C.), or the temperature measured by the temperature sensor 58 is the predetermined temperature T3. When performing the heating operation during the daytime in a state of (for example, 10 ° C.) or more, as shown in FIG. 5, the fan 21 is stopped, the damper 21 is closed, the dampers 19 and 20 are opened, and the fan is closed. Activate 14, 15, 16 and 18.

As a result, the outside air is taken into the housing 12 through the panel near space Q and the outside air intake portion 24, the air in the room R is taken into the housing 12 through the inside air intake portion 23, and the taken-in air (the outside air and the inside room R Air of the room R passes through the heat exchanger 13 and is supplied to the room R via the outlets 25, 26, 27, and the air in the room R taken into the housing 12 through the inside air intake 38 is discharged into the exhaust 40. It is discharged to the outdoors via.

When the temperature measured by the temperature sensor 58 is equal to or lower than the temperature T2 and the cooling operation is performed during the nighttime, the outside air is cooled in the space Q near the panel by the radiation cooling of the PVT panel P, and the outside air intake portion 24 Since it flows into the housing 12, it is possible to reduce the load of the cooling operation.
When the temperature measured by the temperature sensor 58 is equal to or higher than the temperature T3 and the heating operation is performed during the daytime, the outside air warmed by the heat generation of the PVT panel P passes through the space Q near the panel and is taken into the outside air. Since it flows into the housing 12 from the portion 24, the heating operation load can be reduced.

The control unit 22 operates the outdoor unit 27a connected to the heat exchanger 13 to pass through the heat exchanger 13 in accordance with the temperature of the air traveling toward the housing 12 in the duct 36 measured by the temperature / humidity sensor 49. It is determined whether or not the heat exchange of the air to be performed is performed, and whether or not the intake of the outside air into the housing 12 through the panel near space Q and the outside air intake portion 24 is continued.

In the present embodiment, with the operation of the fan 17 and the outdoor unit 27a stopped, the dampers 19 and 20 are closed, the damper 21 is opened, the fan 18 is rotated, and at least one of the fans 14, 15 and 16 is rotated. By operating, the ventilation can be performed without adjusting the temperature of the room R. Then, with the fans 17 and 18 stopped, the dampers 21 and 20 are closed, the damper 19 is opened, and at least one of the fans 14, 15, and 16 and the outdoor unit 27a are operated, so that the interior of the room is not ventilated. Only the temperature adjustment of R can be performed.

Further, in the present embodiment, as shown in FIG. 1, a hot water storage tank 59 that stores hot water to be supplied to the bathtub K or the like is connected to the outdoor unit 27a, and the outdoor unit 27a controls the indoor R temperature. In addition to the operation for adjusting, the operation of boiling the hot water in the hot water storage tank 59 is also performed. An operation panel 60 for hot water supply operation is connected to the outdoor unit 27a via a hot water storage tank 59.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and changes in conditions and the like without departing from the gist are all within the scope of application of the present invention.
For example, the handling unit can be installed in a place other than the attic space. Further, the air-conditioning ventilation device can be installed in a building to which a PVT panel is not attached, for example, it can be installed in a building to which a solar panel or a heat collecting panel is attached instead of the PVT panel.

Further, the inflow amount adjusting means is not limited to the damper provided in the housing, and for example, a plate-like object that horizontally moves and opens and closes the indoor air intake opening of the duct connected to the housing, and the intake opening is rotated. A rotating plate that opens and closes may be used as the inflow amount adjusting means.
Further, the inflow / outflow amount detecting means can be configured by an anemometer instead of the pressure sensor.
Furthermore, the number of discharge parts provided in the handling unit may be plural or one. The outside air intake portion provided in the handling unit may be plural or one.

10: Air-conditioning ventilation device, 11: Handling unit, 12: Housing, 13: Heat exchanger, 14, 15, 16, 17, 18: Fan, 19, 20, 21: Damper, 22: Control means, 23: Internal air intake Part, 24: outside air intake part, 25, 26, 27: blowout part, 27a: outdoor unit, 29, 30, 31: duct, 32, 33, 34: check valve, 35, 36, 37: duct, 38: Inside air intake part, 39: Total heat exchanger, 40, 41: Discharge part, 42, 43: Duct, 44, 45: Check valve, 46: Duct, 47: Outside air intake part, 48: Filter, 49: Temperature and humidity Sensor, 50: Pressure sensor, 51: Temperature / humidity sensor, 52: Pressure sensor, 53: Temperature / humidity sensor, 54, 55: Pressure sensor, 56: Inflow / outflow amount detection means, 57: Operation panel, 58: Temperature sensor, 59 : Hot water storage tank, 60: Operation Board, K: bathtub, P: PVT panel, Q: panel space near, R: room, S: building

Claims (4)

An air-conditioning ventilation device that supplies temperature-controlled air to the room while replacing the indoor air with the outdoor air,
A housing, an outside air intake portion that takes in outside air into the housing, first and second inside air intake portions that take in indoor air into the housing, an exhaust portion through which air exhausted to the outside is sent out of the housing, and A handling unit provided with a blow-out portion that blows out the temperature-controlled air supplied to the room to the outside of the housing;
Outflow / inflow amount detection means for measuring the amount of air entering the housing from the outside air intake portion and the first inside air intake portion and the amount of air flowing out of the housing from the discharge portion and the blowout portion,
An inflow amount adjusting means for adjusting the amount of air in the room that flows into the housing through the second inside air intake section;
An air-conditioning ventilator comprising: a control unit that controls the operation of the inflow amount adjusting unit based on the measured value of the inflow / outflow amount detecting unit. The air-conditioning ventilator according to claim 1, wherein the inflow amount adjusting means is a damper. The air-conditioning ventilation device according to claim 1 or 2, wherein there are a plurality of the outside air intake portions, and at least one of the outside air intake portions passes through a heat collecting vicinity space provided in the vicinity of the heat collector. An air-conditioning ventilator that allows the warm air to pass through. The air-conditioning ventilator according to claim 3, wherein there are a plurality of discharge parts, and the air discharged to the outside through the space near the heat collection passes through at least one of the discharge parts. Ventilation equipment.

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