JPH05180496A - Full-heat exchanger - Google Patents

Abstract

PURPOSE:To facilitate setting of air flow rate for a circulation fan by setting the fan of a circulation unit to a tap of a step lower than that at the time of full components when a combination state of the units is decided as an omission unit, and setting the circulation air flow rate of the fan substantially to the same as that at the time of the full components. CONSTITUTION:A circulation unit A, a heat exchanging unit V are used as basic units, and a full heat exchanger at the time of combination full components of both a dust removing unit C and a humidifying unit M is formed. A controller 50 detects the connection of the units C, M based on initial codes X, Y of the units C, M. When combination deciding means 51 decides not to be full component, tap setting means 52 so sets the taps of circulation fans MF2, MF3 to those of lower stage than that at the time of the full components that the circulation air volume the fans MF2, MF3 become substantially the same as that at the time of the full components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a circulation unit and a heat exchange unit as basic units, and a total heat in which a dust removing unit having an electric dust collector and an additional unit having a humidifier or a deodorizer are selectively combined. The present invention relates to an exchange device, and particularly relates to control of circulating air flow of a circulation fan of a circulation unit.

[0002]

2. Description of the Related Art Generally, a total heat exchanging device is equipped with a circulation fan and a heat exchanger to perform normal ventilation and heat exchange ventilation. In addition to this, in recent years, it has been required to add a dust removing, humidifying or deodorizing function to the total heat exchange device. Therefore, in the conventional total heat exchange device, a circulation unit having a circulation fan,
A heat removal unit having a heat exchanger is used as a basic unit, and a dust removal unit having an electrostatic precipitator and an additional unit having a humidifier or a deodorizer are selectively combined.

[0003]

However, in the total heat exchange apparatus in which the dust removing unit and the additional unit are selectively combined with the basic unit, whichever of the dust removing unit and the additional unit is added to the basic unit. If only one unit is combined, that is, the omitted unit, that is, the basic unit + dust removal unit or the basic unit + additional unit, the circulation air volume of the circulation fan of the circulation unit is the dust removal unit and the additional unit compared to the basic unit. Compared with the full component in which the above is combined, that is, the basic unit + dust removal unit + additional unit, compared to the circulating air volume of the circulation fan, there is a reduction in pressure loss, which is excessive. As a result, the driving noise was loud and gave the user discomfort.

Further, the dust removing unit and the additional unit are designed so that the capacity can be maximized in accordance with the circulation air volume of the circulation fan at the time of full component, and the circulation air volume of the circulation fan becomes excessively larger than that at the time of full component. In the omitted unit, the capabilities of the dust removal unit and the additional unit could not be fully exerted. Therefore, it is difficult to set the air flow rate for the circulation fan when designing the equipment so that the dust removal unit and the additional unit can fully exert their capabilities even when the omitted unit is used.

In view of the above, it is an object of the present invention to provide a total heat exchanging device that facilitates the setting of the air volume for a circulation fan when designing equipment and reduces the operating noise when omitting units.

[0006]

A means for solving the problems according to the present invention is based on a circulation unit having a circulation fan and a heat exchange unit having a heat exchanger as basic units, a dust removing unit having an electric dust collector, and a humidifier. In the total heat exchange device selectively combined with an additional unit having a deodorizer or a deodorizer, the circulation fan is of a tap-switching type in order to change the circulating air volume in multiple stages, and the dust removal unit and the additional unit are A control circuit is provided that outputs an initial code according to each unit when the power is turned on, and sets the switching of the circulating fan taps according to the combination state of the dust removal unit and the additional unit when the power is turned on. The control circuit is based on the initial codes of the dust removal unit and the additional unit. A unit combination determination means for detecting the connection between the dust unit and the additional unit and determining whether or not the dust removal unit and the additional unit are combined with the basic unit, and if the combination determination means is not the above full component When determined, the tap setting means sets the tap of the circulation fan to a lower stage tap than that of the full component so that the circulation air flow rate of the circulation fan becomes substantially equal to that of the full component.

[0007]

In the above means for solving the problems, when the power is turned on, the combination determining means of the control circuit detects the connection of the dust removing unit and the additional unit based on the initial codes of the dust removing unit and the additional unit, and determines the combination state of the units. To do. When the combination determination means determines that the unit combination state is the omitted unit, the tap setting means sets the tap of the circulation fan of the circulation unit to a lower stage tap than that of the full component, and the circulation fan circulation of the omitted unit is omitted. The air volume is almost the same as that of full component.

Therefore, since the circulating air flow rate of the circulation fan in the omitted unit does not become larger than that in the case of the full component, it is easy to set the air volume for the circulation fan in the equipment design, and the operation noise in the omitted unit is reduced. It can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 3 is a schematic cross-sectional view of a total heat exchange device at the time of a full component in which both the dust removal unit C and the humidification unit M are combined with the circulation unit A and the heat exchange unit V as basic units, and FIG. 4 is a circulation unit. FIG. 4A is a schematic cross-sectional view of the total heat exchange device in the case of the omitted unit in which only the dust removal unit C is combined with the heat exchange unit V as the basic unit.

In FIGS. 3 and 4, 1 is a total heat exchanger, R
Reference numeral 1 is an indoor room, R2 is an outdoor room, R3 is a ceiling, and the total heat exchange apparatus 1 is a ceiling-embedded type. As is clear from FIGS. 3 and 4, the total heat exchange device 1 includes a circulation unit A for circulating clean air in the room R1 and a heat exchange unit V for ventilating the indoor air and the outdoor air as basic units in the air. The dust removing unit C for removing the dust and the humidifying unit M for humidifying the air are selectively combined.

The structure of the total heat exchange apparatus 1 will be described with reference to FIG. 3 for convenience. The circulation unit A is arranged on the downstream side of the dust removal unit C and circulates the clean room circulation air SA1 in the room R1.
And a second circulation fan MF3 that circulates the clean outdoor air SA2 into the room R1. The circulation unit A is divided into upper and lower two stages, and the upper side has a supply chamber 2 of the clean room circulation air SA1 that accommodates the first circulation fan MF2.
However, on the lower side, a supply chamber 3 for the outside air SA2 of the clean room that accommodates the second circulation fan MF3 is provided. The supply chamber 2 has a first supply duct 4 for supplying the clean room circulation air SA1 to the room R1, and the clean room outside air chamber 3 has a second supply duct for supplying the clean room outside air SA2 to the room R1. 5 are connected to each other. Circulation fan MF2, M
In F3, since the circulating air volume can be varied in multiple stages, the drive current can be switched to, for example, extra strong (H), strong (M), or weak (L) by a tap switching method.

The heat exchange unit V is arranged on the upstream side of the dust removing unit C with the humidifying unit M interposed therebetween, and a heat exchanger 6 for exchanging heat between the indoor air RA2 and the outdoor air OA.
The indoor heat exchange ventilation air EA that has passed through the heat exchanger 6 is subjected to outdoor R
2 has a ventilation fan MF1 for exhausting air. The heat exchange unit V is partitioned into four parts around the heat exchanger 6, and the outdoor air OA is located on the upper left side in the figure.
For introducing the indoor ventilation air RA2 to the heat exchanger on the upper right side, and an intake chamber 8 for introducing the indoor ventilation air RA2 on the lower left side to accommodate the ventilation fan MF1. The suction chamber 9 for sucking the indoor heat exchange ventilation air EA that has passed through the heat exchanger 6 from the outside, and the outdoor air O that has passed through the heat exchanger 6 from the outdoor air introduction chamber 7 on the lower right side.
Suction chambers 10 for respectively sucking A by the second circulation fan MF3 are provided. In addition, indoor ventilation air R
Between the introduction chamber 8 of A2 and the suction chamber 10 of the outdoor air OA, a bypass path for introducing the outdoor air OA from the indoor ventilation air introduction chamber 8 into the outdoor air suction chamber 10 by bypassing the heat exchanger 6 (Fig. (Not shown) is connected.

In the introduction chamber 7 for the outdoor air OA, the outdoor air O
An outside air temperature sensor 11 for detecting the temperature of A and an inside air temperature sensor 12 for detecting the temperature of the indoor ventilation air RA2 are housed in the introduction chamber 8 of the indoor ventilation air RA2, respectively, and the boundaries between the introduction chambers 7, 8 are accommodated. A damper 13 that opens and closes the boundary according to the difference between the temperature of the outdoor air OA and the temperature of the indoor ventilation air RA2 is rotatably provided in the. The damper 13 is driven by a damper motor (not shown). When the boundary between the introduction chambers 7 and 8 is opened without rotating the damper 13, the outdoor air OA bypasses the heat exchanger 6 from the introduction chamber 7 and is guided to the outdoor air suction chamber 10 through the bypass passage. When ventilation is performed and the damper 13 is rotated to close the boundary with the introduction chambers 7 and 8, the outdoor air OA from the introduction chamber 7 passes through the heat exchanger 6 and the suction chamber 1
It is guided to 0 and becomes heat exchange ventilation.

A first suction duct 14 for sucking the outdoor air OA is provided in the introduction chamber 7 for the outdoor air OA, and a second suction duct 14 is provided for sucking the outdoor ventilation air RA2 in the introduction chamber 8 for the indoor ventilation air RA2. The suction duct 15 is the indoor heat exchange air EA.
An exhaust duct 16 for exhausting the indoor heat exchange ventilation air EA to the outdoor R2 is connected to each of the suction chambers 9.

The dust removing unit C is arranged on the downstream side of the humidifying unit M with the high performance filter 17 interposed therebetween, and the first electric dust collecting element 18 for collecting dust in the indoor circulating air RA1 and the outdoor air OA. It has the 2nd electric dust collection element 19 which collects dust inside. The dust removing unit C is divided into two upper and lower stages, the first dust removing chamber 20 of the indoor circulating air RA1 accommodating the first electric dust collecting element 18 is on the upper side, and the second electricity collecting unit is on the lower side. Element 1
The second dust removing chambers 21 for the outdoor air OA for accommodating 9 are respectively provided. And the first electrostatic precipitator element 1
8 and the high-performance filter 17 between the indoor circulating air RA
A dust sensor 22 for detecting the dust concentration of No. 1 is arranged. When the dust sensor 22 detects a dust concentration equal to or higher than a predetermined value, the electrostatic precipitating elements 18 and 19 are driven based on the detected dust concentration.

The humidifying unit M has a humidifier 23 for humidifying the indoor circulation air RA1, and the indoor circulation air RA1.
Is connected to a suction duct 24. A humidity sensor 25 that detects the dry state of the indoor circulation air RA1 is arranged at the end of the suction duct 24 for the indoor circulation air RA1 on the humidification unit M side. Humidity sensor 2
When 5 detects a humidity below a predetermined value, the humidifier 22 is driven based on this.

The dust removing unit C and the humidifying unit M are configured to output the initial codes X and Y corresponding to each unit to the control circuit 50 shown in FIG. 1 when the power is turned on. And, in the total heat exchange apparatus 1 of the present embodiment,
A control circuit 50 is provided for controlling the tap settings of the circulation fans MF2 and MF3 according to the combination state of the dust removing unit C and the humidifying unit M, which have the units A and V as basic units, at the time of power-on initialization.

The structure of the control circuit 50 will be described with reference to the block diagram shown in FIG. Control circuit 50
Includes a microcomputer having a CPU, a data RAM, a program ROM, and the like, and controls the operation of the device according to a program stored in the ROM in advance.

That is, the control circuit 50 detects the connection between the dust removing unit C and the humidifying unit M based on the initial codes X and Y of the dust removing unit C and the humidifying unit M,
Dust removal unit C, humidification unit M for the basic unit
When the unit combination discriminating means 51 for discriminating whether or not the two components are full components to be combined, and the combination discriminating means 51 discriminating that the full component is not the above-mentioned full component,
The circulating fans MF2, MF3 are set so that the amount of circulating air blown by the circulating fans MF2, MF3 becomes almost the same as that of the full component.
It has a tap setting means 52 for setting the tap of F3 to a tap at a stage lower than that of the full component. Incidentally, reference numeral 26 in the drawing denotes a remote control switch.

Circulation fan MF in the above air cleaner
2, the MF3 circulation air volume control operation will be described with reference to the flowchart of FIG. At the time of initialization after the power is turned on, first in Step 1, the unit combination determination means 51 of the control circuit 50 determines whether or not the humidifying unit M is connected based on the initial code Y of the humidifying unit M. Here, the initial code Y of the humidifying unit M is input to the combination determining means 51, and if the combination determining means 51 determines that the humidifying unit M is connected based on this, the process proceeds to Step 2 and the combination determining means 51. If the combination determination means 51 determines that the humidifying unit M is not connected without inputting the initial code Y of the humidifying unit M, the process proceeds to Step 7.

When the process shifts to Step 2, the combination discriminating means 5
1 determines based on the initial code X of the dust removing unit C whether or not the dust removing unit C is connected. Here, when the initial code X of the dust removing unit C is input to the combination determining means 51 and the combination determining means 51 determines that the dust removing unit C is connected based on this, the Ste
When the process proceeds to p3, the initial code Y of the humidifying unit M is not input to the combination determining unit 51, and the combination determining unit 51 determines that the humidifying unit M is not connected, St
Move to ep8.

On the other hand, when the process shifts from Step 1 to Step 7, it is determined whether the dust removing unit C is connected, as in Step 2. Here, if the combination determining means 51 determines that the dust removing unit C is connected, Step
When it is determined that the humidifying unit M is not connected, the process returns to Step 1. In Step 3, when the unit combination state is such that both units C and M are incorporated into the basic unit as shown in FIG. 3, the combination discriminating means 51 confirms that both units C and M are connected. Then, it is determined that the combined state of the units is the full component, and the process proceeds to Step 4. St
When shifting to ep4, the tap switching means 52 determines whether or not the remote control switch 26 is installed. Here, if it is determined that the remote control switch 26 is installed, the process proceeds to Step 5, and the tap setting means 52 sets the taps of the circulation fans MF2, MF3 corresponding to the strength / weakness of the remote control switch 26 to H depending on the model. Set to / M or M / L. Also, St
If it is determined in ep4 that the remote control switch 26 is not installed, the process proceeds to Step6, and the tap setting means 52 sets the taps of the circulation fans MF2 and MF3 to H or M according to the model.

On the other hand, in Step 8, when the unit combination state is such that only the dust removing unit C is incorporated as shown in FIG. 4, the combination determining means 51 confirms that only the dust removing unit C is connected, It is determined that the unit combination state is the omitted unit, and the process proceeds to Step 9. When switching to Step 9, tap switching means 5
2 determines whether or not the remote control switch 26 is installed. If it is determined that the remote control switch 26 is installed, Step10
And the tap setting means 52 causes the circulation fans MF2, M
The taps of the circulation fans MF2, MF3 corresponding to the strength / weakness of the remote control switch 26 are set to M / L according to the model so that the circulating air flow rate of F3 becomes almost the same as that of the full component. When it is determined in Step 9 that the remote control switch 26 is not installed, the process proceeds to Step 11, and the tap setting means 52 makes the circulating fan MF2 so that the circulating air flow rates of the circulating fans MF2 and MF3 become substantially the same as those of the full fan. , MF
Set the tap of 3 to M or L depending on the model.

Thus, when the power is turned on, the control circuit 50
Unit combination determining means 51 detects the connection between the dust removing unit C and the humidifying unit M based on the initial codes X and Y of the dust removing unit C and the humidifying unit M to determine the combined state of the units, and the combination determining means 51. If it is determined that the combination state of the units is the omitted unit, the tap setting means 52 sets the taps of the circulation fans circulation fans MF2 and MF3 to the taps at a stage lower than that of the full component, so that the circulation of the omitted unit is performed. Fans MF2, M
The circulating air flow rate of F3 is almost the same as that of the full component. Therefore, the circulation fan MF2 in the omitted unit is
The circulating air flow rate of the MF3 does not become larger than that of the full component.

Therefore, the operating noise at the time of the omitted unit can be reduced. Further, even when the omitted unit is used, the circulation air flow rates of the circulation fans MF2 and MF3 are almost the same as those of the full component, so that the capabilities of the dust removal unit C and the additional unit M can be fully exerted. Therefore, it becomes easy to set the air flow rates for the circulation fans MF2 and MF3 when designing the equipment.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made within the scope of the present invention. For example, in the above-mentioned embodiment, the humidifier is described as an example of the additional unit, but a deodorizer may be combined as the additional unit,
The same effect can be obtained by combining a humidifier and a deodorizer as an additional unit.

[0027]

As is apparent from the above description, according to the present invention, when the combination determination means determines that the combination state of the units is the omitted unit, the tap setting means determines that the tap of the circulation fan of the circulation unit is full component. The lower level taps are set, and the circulating air flow of the circulating fan in the omitted unit is almost the same as that in the full component.Therefore, the circulating air amount of the circulating fan in the omitted unit is excessive compared to that in the full component. There is no.

Therefore, there is an excellent effect that it is possible to easily set the air flow rate to the circulation fan at the time of facility design and reduce the operation noise at the time of the omitted unit.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a total heat exchange apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart of the same.

FIG. 3 is a schematic cross-sectional view of a total heat exchange device at the time of full component.

FIG. 4 is a schematic cross-sectional view of the total heat exchange device when the omitted unit is used.

[Explanation of symbols]

 A circulation unit V heat exchange unit C dust removal unit M humidification unit (additional unit) MF2, MF3 circulation fan 6 heat exchanger 18, 19 electrostatic precipitator element 23 humidifier 50 control circuit 51 unit combination discriminating means 52 tap switching means

Claims (1)

[Claims] 1. An electrostatic precipitator (18) (with a circulation unit (A) having circulation fans (MF2) (MF3) and a heat exchange unit (V) having a heat exchanger (6) as basic units. In a total heat exchange device in which a dust removal unit (C) having 19) and a humidifier (23) or an additional unit (M) having a deodorizer are selectively combined, the circulation fans (MF2) (MF3) are It is a tap-switching type that allows the circulating air volume to be changed in multiple stages.The dust removal unit (C) and the additional unit (M) have an initial code corresponding to each unit (C) (M) when the power is turned on.
(X) (Y) output, dust removal unit for the basic unit when the power is turned on
(C), a control circuit (50) for setting switching of the taps of the circulation fans (MF2) (MF3) according to the combination state of the additional unit (M) is provided, and the control circuit (50) is the dust removal unit. (C), the additional unit (M) 's initial code (X), (Y) is used to detect the connection of the dust removing unit (C) and the additional unit (M), and the dust removing unit (C), A unit combination discriminating means (51) for discriminating whether or not both units of the additional unit (M) are combined, and a circulation fan (MF2) ( Circulating fan so that the circulating air flow rate of MF3) is almost equal to that of full component
A total heat exchange device comprising: (MF2) and (MF3) tap setting means (52) for setting the taps at a stage lower than that of the full component.