JPH09178243A - Operation controller for ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To judge the operation mode of air conditioning equipment appropriately without monitoring cooling and heating operation signals by specifying heat exchange ventilation when the room temperature is lower than the outdoor temperature and ordinary ventilation when the room temperature is higher than the outdoor temperature under the condition that the room temperature is higher than a first specified temperature. SOLUTION: A bypass path 17 is closed and outside air moving through an air supply path 15 is passed through a heat exchanger 4 to be supplied to the room side from an air fan 2. The room air moving through an exhaust path 16 is passed through the heat exchanger 4 and discharged to the outdoor side from an exhaust fan 3. When the air passes through the heat exchanger 4, a heat exchange is performed between the outside air taken into the room side and the room air discharged to the outdoor side. In this manner, so-called heat exchange ventilation is accomplished. On the other hand, the bypass path 17 is opened and outside air and room air are supplied or discharged directly. In this manner, so-called ordinary ventilation is accomplished. Heat exchange ventilation is specified when the room temperature is lower than the outdoor temperature and ordinary ventilation when the room temperature is higher than the outdoor temperature under the condition that the room temperature is higher than a first specified temperature.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an operation control device for a ventilation device.

[0002]

2. Description of the Related Art Conventionally, this type of ventilator is disclosed in, for example, Japanese Patent Laid-Open No. 61-295443 and, as shown in FIG. 7, a main body casing A is provided with indoor and outdoor air supply ports B and C. And indoor and outdoor exhaust ports D and E are formed to form an indoor air supply fan F near the indoor air supply port B and an indoor exhaust fan G near the outdoor air exhaust port E, respectively. In addition to being provided, each air supply port B,
A heat exchanger K for exchanging heat between the outside air passing through the air supply passage H between C and the room air passing through the exhaust passage J between the exhaust ports D and E is arranged, and A bypass passage L that bypasses the exchanger K is provided, and the bypass passage L and the air supply passage H can be switched via the switching damper M.

Further, the above ventilation device is provided with an operation control device, that is, an indoor temperature detector for detecting the indoor temperature and an outside air temperature detector for detecting the outside air temperature are used, and the detection of each of the detectors is performed. A heat exchange ventilation for exchanging heat between the outside air passing through the air supply passage H and the room air passing through the exhaust passage J while exchanging heat with each other by the heat exchanger K by the switching operation of the switching damper M based on the temperature, and this heat exchange. Energy saving measures and comfort are obtained by selectively performing normal ventilation for directly supplying and exhausting outside air and indoor air without performing heat exchange in the container K.

[0004]

However, the operation control device for the ventilation device as described above is used together with the air conditioner, and the operation information is monitored during the cooling and heating operation by the air conditioner. Instead, the heat exchange ventilation operation of the ventilation device and the normal ventilation are selectively performed based on only the temperature detected by each of the detectors, so the operation mode of the air conditioner cannot be properly determined. However, the ventilation operation is performed in reverse, which is insufficient as an energy saving measure, and there is a problem that sufficient comfort cannot be obtained.

An object of the present invention is to provide a ventilator capable of properly determining the operation mode of an air conditioner without monitoring a cooling operation signal or a heating operation signal of the air conditioner and improving comfort and energy saving. It is to provide the operation control device of.

[0006]

According to the first aspect of the present invention,
Heat exchange ventilation for exchanging heat between the outside air taken in the indoor side (solid arrow in FIG. 4) and the indoor air exhausted outside the room (arrow in FIG. 4) in the heat exchanger 4, and the outside air (solid line in FIG. 4). As shown in FIG. 6 (a), the operation control device of the ventilation device for switching between indoor air (arrow) and indoor air (dashed-dotted arrow in FIG. 4) is switched to normal ventilation without heat exchange in the heat exchanger 4. The heat exchange ventilation when the indoor temperature is lower than the outdoor temperature under the condition that the indoor temperature is higher than the first predetermined temperature (a).
When the indoor temperature is higher than the outdoor temperature, we decided to instruct normal ventilation respectively.

According to a second aspect of the invention, in the same precondition as described above, as shown in FIG. 6B, the room temperature is the first.
Under the condition that the outdoor temperature is higher than the fourth predetermined temperature (d), the heat exchange ventilation is performed when the indoor temperature is lower than the outdoor temperature, and the indoor temperature is higher than the outdoor temperature. At that time, I decided to order normal ventilation.

According to a third aspect of the invention, in the same precondition as described above, as shown in FIG.
It was decided to instruct heat exchange ventilation when the room temperature is higher than the outdoor temperature and normal ventilation when the room temperature is lower than the outdoor temperature, under the condition that the temperature is lower than the predetermined temperature (b).

According to a fourth aspect of the present invention, in the same precondition as described above, as shown in FIG.
Lower than the predetermined temperature (b) and the outdoor temperature lower than the third predetermined temperature (c), heat exchange ventilation is performed when the indoor temperature is higher than the outdoor temperature, and the indoor temperature is lower than the outdoor temperature. At that time, I decided to order normal ventilation.

According to a fifth aspect of the present invention, in the same precondition as described above, as shown in FIG.
Under the condition that the room temperature is lower than the outdoor temperature, the heat exchange ventilation is instructed when the indoor temperature is higher than the outdoor temperature, and the normal ventilation is instructed when the indoor temperature is higher than the outdoor temperature. Under the condition that the temperature is lower than the temperature (b), heat exchange ventilation is specified when the room temperature is higher than the outdoor temperature, and normal ventilation is specified when the room temperature is lower than the outdoor temperature.

According to a sixth aspect of the invention, in the same precondition as described above, as shown in FIG. 6 (f), the outdoor temperature is the third temperature.
Under the condition that the room temperature is lower than the outdoor temperature under the condition that the temperature is higher than the predetermined temperature (C), heat exchange ventilation is specified, and when the indoor temperature is higher than the outdoor temperature, normal ventilation is specified.

According to a seventh aspect of the invention, in the same precondition as described above, as shown in FIG. 6 (g), the outdoor temperature is the fourth.
It was decided to instruct heat exchange ventilation when the room temperature is higher than the outdoor temperature and normal ventilation when the room temperature is lower than the outdoor temperature, under the condition that the temperature is lower than the predetermined temperature (d).

[0013]

According to the first aspect of the present invention, without monitoring the cooling operation signal of the air conditioner, in the range where the cooling operation is likely to occur, the room temperature does not rise while ventilating normally. Ventilation and heat exchange ventilation are selected appropriately, so the load on the air conditioner can be reduced.

According to the second aspect of the present invention, the air conditioning load can be appropriately reduced within the range in which the possibility of the cooling operation is the highest, without monitoring the cooling operation signal of the air conditioner.

In the third aspect of the invention, without monitoring the heating operation signal of the air conditioner, in a range where there is a high possibility of heating operation, normal ventilation and heat are applied so that the temperature of the room does not drop while ventilating. Since the exchange ventilation is selected appropriately, the load on the air conditioner can be reduced.

According to the fourth aspect of the present invention, the air conditioning load can be appropriately reduced within the range where the heating operation is most likely without monitoring the heating operation signal of the air conditioner.

According to the invention of claim 5, without monitoring the cooling operation signal and the heating operation signal of the air conditioner,
The air conditioning load can be appropriately reduced within a range where the cooling operation and the heating operation are highly likely to occur.

According to the sixth aspect of the present invention, the air conditioning load can be appropriately reduced within the range where the possibility of the cooling operation is the highest, without monitoring the cooling operation signal of the air conditioner.

According to the seventh aspect of the present invention, the air conditioning load can be appropriately reduced within the range where the heating operation is most likely without monitoring the heating operation signal of the air conditioner.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The ventilation device shown in FIGS. 4 and 5 includes a main body casing 1, an indoor air supply port 11 and an outdoor air supply port 12,
The indoor and outdoor exhaust ports 13 and 14 are formed to form the indoor air supply fan 2 near the indoor air supply port 11 and the outdoor air exhaust fan near the outdoor air exhaust port 14 inside the casing 1. 3 are arranged respectively. A heat exchanger 4 is disposed inside the center of the main body casing 1, and by this heat exchanger 4, the outdoor air passing through the air supply passage 15 between the air supply ports 11 and 12 and the exhaust ports 13 are provided. , 14 and the indoor air passing through the exhaust passage 16 between the heat exchangers 14 and 14, while bypassing the heat exchanger 4 to the side of the heat exchanger 4 inside the casing 1. A switching means 5 for switching between the bypass passage 17 and the exhaust passage 16 by providing a passage 17
Is provided.

The switching means 5 includes a switching damper 51, a switching motor 52 thereof, and a plurality of connecting rods 53 connecting the motor 52 and the damper 51. , The exhaust passage 16 and the bypass passage 17 are selectively switched. In FIG. 5, 41,
Reference numeral 41 is a filter of the heat exchanger 4.

Then, as shown by the solid line in FIG. 4, the switching damper 51 is switched to close the bypass passage 17, whereby the outdoor air passing through the air supply passage 15 is changed as shown by the solid line arrow in FIG. , Through the heat exchanger 4 to supply air from the air supply fan 2 to the inside of the room, and the indoor air passing through the exhaust passage 16 is allowed to pass through the heat exchanger 4 as indicated by a dotted arrow in FIG. When the air is exhausted from the exhaust fan 3 to the outdoor side and passes through the heat exchanger 4, the outdoor air taken in the indoor side and the indoor air exhausted to the outdoor side exchange heat with each other, so-called heat exchange. Provide ventilation. On the other hand, as shown by the phantom line in the figure, the damper 51 is switched to operate the bypass passage 17
By opening, the outdoor air and the indoor air are directly supplied and exhausted without heat exchange between the outdoor air and the indoor air by the heat exchanger 4 as indicated by the one-dot chain line arrow, so-called normal ventilation is performed. Thus, energy saving measures and comfort can be obtained by selectively performing these ordinary ventilation and heat exchange ventilation.

The above ventilation device is provided with an operation control device for automatically switching between normal ventilation and heat exchange ventilation. As shown in FIG. 1, this operation control device requires an indoor temperature detector 6 that detects an indoor temperature, an outdoor temperature detector 7 that detects an outdoor temperature, a minimum indoor temperature that requires cooling, and heating. Setting section 8 for setting the indoor maximum temperature to be set, the outdoor minimum temperature requiring cooling and the outdoor maximum temperature requiring heating, and a controller 9 for switching control of the switching means 5.
And the detectors 6 and 7 and the setting unit 8 are connected to the input side of the controller 9.

Then, each temperature set by the setting unit 8
Based on the temperature detected by each of the detectors 6 and 7, the controller 9 determines whether the operation mode of the air conditioner used together with the ventilation device is in the cooling area or the heating area.
The controller 9 compares and determines the temperatures detected by the detectors 6 and 7 in the heating area, and the output of the controller 9 based on the determination result controls the switching means 5 to switch between the heat exchange ventilation operation and the normal ventilation operation. is there.

Specifically, as shown in FIG. 2, the setting unit 8 of the controller 9 requires, for example, 2 units that require cooling.
Indoor minimum temperature of 4 ° C (first predetermined temperature indicated by straight line a)
And a room maximum temperature of, for example, 20 ° C. that requires heating (a second predetermined temperature indicated by a straight line B), and a minimum outdoor temperature of, for example, 24 ° C. that requires cooling (a third predetermined temperature indicated by a straight line C) Also, the outdoor maximum temperature of 20 ° C. (the fourth predetermined temperature indicated by the straight line D) that requires heating is set, respectively.

The indoor temperature RA detected by the indoor temperature detector 6 is at least the minimum indoor temperature (straight line a), and the outdoor temperature OA detected by the outdoor temperature detector 7 is at least the maximum outdoor temperature (straight line d). In addition, the cooling area is a temperature area (left downward diagonally shaded area) that satisfies any of the following conditions: the indoor temperature RA is the indoor minimum temperature (straight line a) and the outdoor temperature OA is the outdoor minimum temperature (straight line c). To consider. Further, the indoor temperature RA is equal to or lower than the indoor maximum temperature (straight line B) and the outdoor temperature O
Either A is equal to or lower than the lowest outdoor temperature (straight line C), or if the indoor temperature RA is equal to or higher than the highest indoor temperature (straight line B) and the outdoor temperature OA is equal to or lower than the highest outdoor temperature (straight line D). The temperature range (the area with diagonal lines to the lower right) is considered to be the heating range.

In the above cooling area, the indoor temperature RA detected by the indoor temperature detector 6 is the outdoor temperature detector 7
When the temperature is lower than the outdoor temperature OA detected by, that is, in the area surrounded by the upper left part of the slanted line (e) and the upper side part of the outdoor minimum temperature (straight line c) shown in FIG. In the heating area, when the indoor temperature RA is higher than the outdoor temperature OA, that is, in the area surrounded by the lower right part of the diagonal line (f) and the lower part of the outdoor maximum temperature (straight line d) in the figure, The controller 9 outputs a heat exchange ventilation operation instruction to the switching means 5 side.

Further, in the cooling area, when the indoor temperature RA is higher than the outdoor temperature OA, that is, in the area surrounded by the lower right portion of the oblique line (e) and the upper side portion of the outdoor maximum temperature (straight line d). And in the heating area, the room temperature R
When A is lower than the outdoor temperature OA, that is, in the region surrounded by the upper left portion of the diagonal line (f) and the lower side portion of the outdoor minimum temperature (straight line C) in the figure, the controller 9 switches the switching means 5 respectively. The normal ventilation operation instruction is output to the side.

Further, an area surrounded by the indoor minimum temperature (straight line a), the indoor maximum temperature (straight line b), the outdoor minimum temperature (straight line c) and the outdoor maximum temperature (straight line d) is regarded as a blower area, In the air blowing area, heat exchange ventilation is performed by the output from the controller 9.

Next, the above will be described with reference to the flowchart of FIG. First, with the start of the start (step 1), in step 2, it is determined whether the indoor temperature and the outdoor temperature are between 20 and 24 ° C., and in the case of Yes, it is considered that the temperature is in the air blowing area, In step 3, heat exchange ventilation is performed.

If the answer is NO in step 2,
That is, when it is not in the air blowing area, in step 4,
If the indoor temperature is 24 ° C or lower and the outdoor temperature is 24 ° C or higher, or if the indoor temperature is 24 ° C or higher and the outdoor temperature is 20 ° C or higher, it is determined to be in the cooling area in the case of Yes. In step 5, it is determined whether the indoor temperature is lower than the outdoor temperature. If yes, heat exchange ventilation is performed in step 3, and if no, normal ventilation is performed in step 6.

Further, in step 4, in the case of no,
That is, when it is not in the cooling region, in step 7, it is determined whether the indoor temperature is 20 ° C. or lower and the outdoor temperature is 24 ° C. or lower, or whether the indoor temperature is 20 ° C. or higher and the outdoor temperature is 20 ° C. or lower, If yes, it is considered to be in the heating area, and in step 8, it is determined whether the indoor temperature is higher than the outdoor temperature. If yes, heat exchange ventilation in step 3 is performed, and if no, no. , Step 6
The normal ventilation is performed, and if the answer is NO in step 7, that is, if the vehicle is not in the heating area, the process returns to step 2.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an operation control device of a ventilation device of the present invention.

FIG. 2 is a block diagram of the operation control device.

FIG. 3 is a flowchart of the operation control device.

FIG. 4 is a plan sectional view of the ventilation device.

FIG. 5 is a side sectional view of the ventilation device.

FIG. 6 is an explanatory diagram of a switching state between heat exchange ventilation and normal ventilation.

FIG. 7 is a side sectional view of a conventional example.

[Explanation of symbols]

 4; heat exchanger 5; switching means 6; indoor temperature detector 7; outdoor temperature detector (outside air temperature detector) 8; setting unit

Claims (7)

[Claims] 1. A heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the indoor air exhausted to the outside by a heat exchanger (4) and the heat exchanger (for exchanging the outside air and the indoor air). 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, heat exchange is performed when the indoor temperature is lower than the outdoor temperature under the condition that the indoor temperature is higher than the first predetermined temperature (a). An operation control device for a ventilation device, which directs ventilation when the room temperature is higher than the outdoor temperature. 2. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the room air exhausted to the outside by a heat exchanger (4), and the heat exchanger (for exchanging the outside air and the room air). 4)
In the operation control device of the ventilation device that switches between normal ventilation that performs ventilation without heat exchange in step 1, the indoor temperature is higher than the first predetermined temperature (a) and the outdoor temperature is higher than the fourth predetermined temperature (d). An operation control device for a ventilation device, which directs heat exchange ventilation when the indoor temperature is lower than the outdoor temperature and normal ventilation when the indoor temperature is higher than the outdoor temperature under the conditions. 3. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the indoor air exhausted to the outside by a heat exchanger (4), and the heat exchanger for exchanging the outside air and the indoor air ( 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, heat exchange is performed when the room temperature is lower than the second predetermined temperature (b) and the room temperature is higher than the outdoor temperature. An operation control device for a ventilation device, which directs ventilation when the indoor temperature is lower than the outdoor temperature. 4. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the room air exhausted to the outside by a heat exchanger (4), and the heat exchanger for exchanging the outside air and the room air ( 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, the indoor temperature is lower than the second predetermined temperature (b) and the outdoor temperature is lower than the third predetermined temperature (c). An operation control device for a ventilation device, which directs heat exchange ventilation when the indoor temperature is higher than the outdoor temperature and normal ventilation when the indoor temperature is lower than the outdoor temperature under the conditions. 5. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the room air exhausted to the outside by a heat exchanger (4), and the heat exchanger (for exchanging the outside air and the room air). 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, heat exchange is performed when the indoor temperature is lower than the outdoor temperature under the condition that the indoor temperature is higher than the first predetermined temperature (a). For ventilation, normal ventilation is instructed when the indoor temperature is higher than the outdoor temperature, and heat exchange ventilation is performed when the indoor temperature is higher than the outdoor temperature under the condition that the indoor temperature is lower than the second predetermined temperature (b). An operation control device for a ventilation device, which directs normal ventilation when the indoor temperature is lower than the outdoor temperature. 6. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the room air exhausted to the outside by a heat exchanger (4), and the heat exchanger for exchanging the outside air and the room air ( 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, heat exchange is performed when the indoor temperature is lower than the outdoor temperature under the condition that the outdoor temperature is higher than the third predetermined temperature (C). An operation control device for a ventilation device, which directs ventilation when the room temperature is higher than the outdoor temperature. 7. Heat exchange ventilation for exchanging heat between the outside air taken into the indoor side and the indoor air exhausted to the outside by a heat exchanger (4), and the heat exchanger for exchanging the outside air and the indoor air ( 4)
In the operation control device of the ventilation device that switches between normal ventilation and ventilation without heat exchange, heat exchange is performed when the indoor temperature is higher than the outdoor temperature under the condition that the outdoor temperature is lower than the fourth predetermined temperature (d). An operation control device for a ventilation device, which directs ventilation when the indoor temperature is lower than the outdoor temperature.