WO2022038721A1 - Air treatment device - Google Patents

Abstract

A control device (100) controls the rate of heating by return air (RA) to a first stationary desiccant (30) and a second stationary desiccant (31) by performing at least one of the following controls: switching timing control in which the switching timing at which an upstream damper (20) switches between a return air channel through which the return air (RA) flows and an outside air channel through which outside air (OA) flows is controlled on the basis of the outside air dehumidification amount that is to be dehumidified from the outside air (OA); heating start control in which the start time for the heating of the return air (RA) by a heater (10) is controlled on the basis of the outside air dehumidification amount; and heating capacity control in which the return air (RA) heating capacity of the heater (10) is controlled on the basis of the outside air dehumidification amount.

Description

Air treatment equipment

The present disclosure relates to an air treatment apparatus equipped with a static desiccant.

In the conventional air treatment system using a stationary desiccant, the switching time for switching the air passage is fixed. When the adsorption of moisture in the low-temperature and high-humidity air is completed by the desiccant, the heated high-temperature and low-humidity air flows into the desiccant that has adsorbed the moisture by switching the air passage, and the desiccant that has adsorbed the moisture (hereinafter referred to as “decicant”). The playback side desiccant) is played.
On the other hand, the regeneration side desiccant is set to have a heating capacity for the desiccant so that the time when the regeneration is completed arrives before the time when the next air passage in which the air to adsorb the moisture is switched is switched. That is, the control is such that the regeneration side desiccant is completed before the switching time when the air to be adsorbed with water flows into the regeneration side desiccant.
However, if the heated air is continuously sent to the regeneration side desiccant after the regeneration of the regeneration side desiccant is completed, the temperature of the regeneration side desiccant itself becomes high due to overheating.
Then, after switching the air that should adsorb water to the regeneration side desiccant, the moisture is not adsorbed to the regeneration side desiccant until the regeneration side desiccant starts adsorbing water, and the temperature of the regeneration side desiccant drops. Occurs. Therefore, the dehumidification efficiency due to the regeneration side desiccant is lowered.

The prior art includes disclosure of a technique for controlling the interval of switching time for switching air passages (for example, Patent Document 1). However, the technique of Patent Document 1 is a technique for reducing the delay in air temperature, and is not a technique for improving the decrease in dehumidification efficiency due to the desiccant on the regeneration side.

Japanese Unexamined Patent Publication No. 2005-291569

The purpose of this disclosure is to provide a technique for improving the dehumidification efficiency of the regenerating desiccant.

The air treatment device according to the present disclosure is
A heat supply device having a heater and a cooler,
With the damper,
A composite dehumidifying device having a first static dehumidifying device and a second static dehumidifying device,
Equipped with
The heat supply device, the damper and the composite dehumidifying device are
The heat supply device, the damper, and the composite dehumidifying device are arranged in this order.
The heater, the damper and the composite dehumidifying device
From the upstream to the downstream of the return air flow path through which the return air flows, the heaters are arranged in the return air flow path in order from the heater.
The cooler, the damper and the composite dehumidifying device
From the upstream to the downstream of the outside air flow path through which the outside air flows, they are arranged in the outside air flow path in order from the cooler.
The damper is
Of the first static dehumidifying device and the second static dehumidifying device, the return air is made to flow into one of the static dehumidifying devices, and the outside air is made to flow into the other static dehumidifying device.
and,
The return air flow path and the outside air flow path so that the return air and the outside air pass through the static dehumidification device which is different from the first static dehumidification device and the second static dehumidification device. To switch,
The first static dehumidifying device and the second static dehumidifying device are
It is heated by the return air based on the amount of dehumidification to be dehumidified from the outside air.

According to the air treatment apparatus of the present disclosure, the first static dehumidifying device and the second static dehumidifying device are heated by returning air based on the dehumidifying amount to be dehumidified from the outside air. Therefore, it is possible to provide a technique for improving the dehumidification efficiency of the dehumidification device on the regeneration side.

FIG. 1 is a schematic view of the first embodiment through the air treatment device in the first damper state. FIG. 1 is a schematic view of the first embodiment through a second damper state air treatment device. FIG. 1 is a schematic left side view of the first embodiment through the air treatment device in the first damper state. In the figure of Embodiment 1, the schematic top view which passed through the upper surface of the air treatment apparatus in the 1st damper state. FIG. 1 is a schematic left side view of the first embodiment through the air treatment device in the second damper state. In the figure of Embodiment 1, the schematic top view which passed through the upper surface of the air treatment apparatus in the 2nd damper state. FIG. 1 is a diagram showing a hardware configuration of a control device in the first embodiment. FIG. 1 is a schematic front view of an air treatment device according to a first embodiment. FIG. 1 is a schematic rear view of the air treatment device according to the first embodiment. FIG. 6 is a simplified diagram of FIGS. 4 and 6 in the figure of the first embodiment. In the figure of Embodiment 1, the figure which shows the operation of the control of the comparative example of the air treatment apparatus 500. In the figure of Embodiment 1, the figure which shows the control by the air processing apparatus 500 and the control by a comparative example. In the figure of the first embodiment, the figure which shows the control which reduces the time from the start of the inflow of return air to the start of heating by a heater 10 by the heater control unit 114. FIG. 6 is a schematic transmission diagram showing a first damper state in the first modification in the figure of the first embodiment. FIG. 6 is a schematic transmission diagram showing a second damper state in the first modification in the figure of the first embodiment. FIG. 6 is a schematic top view showing a second damper state in the first modification in the figure of the first embodiment. FIG. 6 is a schematic bottom view showing a second damper state in the first modification in the figure of the first embodiment. FIG. 6 is a schematic side view showing a bypass path in the first modification in the figure of the first embodiment. FIG. 6 is a schematic perspective view showing a bypass path in the first modification in the figure of the first embodiment. In the figure of Embodiment 1, the figure which shows the bypass determination table in the modification 1. FIG. FIG. 1 is a diagram showing an air diagram of the outside air in the bypass. The figure which shows the modification 2 in the figure of Embodiment 1. FIG. The figure which shows the modification 3 in the figure of Embodiment 1. FIG. FIG. 1 is a diagram showing a hardware configuration of a modified example of the control device in the figure of the first embodiment.

Hereinafter, embodiments of the air treatment apparatus according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the embodiments described below.
When there is a description of XYZ coordinates in the drawings, the XYZ coordinates are in the same coordinate system between the drawings. In the drawings, return air is referred to as RA, outside air is referred to as OA, exhaust is referred to as EA, and supply air is referred to as SA. In the drawings, the outside air OA is indicated by a white arrow, and the return air RA is indicated by a diagonal arrow.
In the following description, the return air flow path in the first damper state is referred to as a return air flow path RA (1), and the return air flow path in the second damper state is referred to as a return air flow path RA (2). The outside air flow path in the damper state is referred to as an outside air flow path OA (1), and the return air flow path in the second damper state is referred to as an outside air flow path OA (2).
In the first damper state, the sub dampers 20a and 20d of the four sub dampers of the upstream damper 20 are in the open state, and the sub dampers 21b and 21c of the four sub dampers of the downstream damper 21 are in the open state. Say the case.
In the second damper state, the sub dampers 20b and 20c of the four sub dampers of the upstream damper 20 are in the open state, and the sub dampers 21a and 21d of the four sub dampers of the downstream damper 21 are in the open state. Say the case.

Embodiment 1.
*** Explanation of configuration ***
The air treatment apparatus 500 will be described below with reference to the drawings. The features of the air treatment device 500 are as follows.
FIG. 1 shows an air treatment device 500 in a first damper state.
FIG. 2 shows an air treatment device 500 in a second damper state.
The features of the air treatment device 500 of the first embodiment are the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C, which will be described later. The configuration of the air treatment device 500 will be described before each control. Hereinafter, the air treatment apparatus 500 will be described in detail.

FIG. 3 schematically shows the left side surface in the first damper state.
FIG. 4 schematically shows the air processing device 500 through the upper surface in the first damper state.
FIG. 5 is schematically shown through the left side surface in the second damper state.
FIG. 6 schematically shows the air processing device 500 through the upper surface in the second damper state.

The air treatment device 500 is
(1) Inflow device 210, (2) Heater 10, (3) Cooler 11, (4) Upstream damper 20, (5) First static desiccant 30, (6) Second static desiccant 31, It includes (7) a downstream damper 21, (8) an outflow device 220, (9) an outside air detection sensor 80, (10) a return air detection sensor 81, and (11) a setting information storage unit 82. As shown in FIG. 1, from the heater 10 and the cooler 11, the downstream damper 21 is arranged inside the housing 400.

(1) In FIGS. 1 and 2, the inflow device 210 is transparently shown.
The inflow device 210 will be described with reference to FIG. The inflow device 210 has a rectangular parallelepiped shape with a hollow inside. The inflow device 210 is divided into two rectangular parallelepiped spaces having the same shape by a partition plate 216. The point P5 is the midpoint of the line segments P1 and P4, and the point P6 is the midpoint of the line segments P2 and P3. The inflow device 210 has a return airflow inlet 211 into which the return air flows in, and an outside airflow inlet 213 in which the outside air flows.
Further, the inflow device 210 has an outlet 212 which is an opening and an outlet 214 which is an opening. The lower side of the outlet 212 is closed by the partition plate 217, and the upper side of the outlet 214 is closed by the partition plate 218. The partition plate 217 and the partition plate 218 have the same shape and are located point-symmetrically with respect to the point P7. The return airflow inlet 211 is circular, and the (Y, Z) coordinates of the center of the circle are as follows. The Y coordinate is the midpoint of the line segments P3 and P6, and the Z coordinate is the midpoint of the line segments P3 and P4. Similarly, the outside airflow inlet 213 is circular, and the (Y, Z) coordinates of the center of the circle are as follows. The Y coordinate is the midpoint of the line segments P2 and P6, and the Z coordinate is the midpoint of the line segments P2 and P1. The return air that has flowed into the return airflow inlet 211 flows out in the X direction from the outlet 212 formed in the upper left. The outside air flowing into the outside airflow inlet 213 flows out in the X direction from the outflow port 214 formed in the lower right. The left direction is the Y direction, and the upward direction is the Z direction.
(2) The heater 10 heats the return air into high-temperature and low-humidity air that regenerates the desiccant.
(3) The cooler 11 cools the outside air into low-temperature and high-humidity air that is dehumidified (adsorbed) by the desiccant.
(4) The upstream damper 20 switches between the return air and the desiccant in which the outside air flows.
The upstream damper 20 is the first damper.
(5) The first stationary desiccant 30 dehumidifies the outside air when the outside air passes through.
(6) The second stationary desiccant 31 dehumidifies the outside air when the outside air passes through.
(7) The downstream damper 21 is switched according to the switching of the upstream damper 20, and the return air and the outside air pass through. The downstream damper 21 is a second damper.
(8) In FIGS. 1 and 2, the outflow device 220 is transparently shown. The outflow device 220 is divided into two upper and lower spaces by a third partition plate 803. The outflow device 220 is connected to the downstream damper 21, corresponds to the sub dampers 21a, 21b, 21c, 21d, and has four openings having the same size as the sub dampers 21a, 21b, 21c, 21d. .. For example, when the sub-damper 21c is in the open state, the opening of the sub-damper 21c and the opening of the outflow device 220 corresponding to the sub-damper 21c overlap. In the upstream damper 20, the outside airflow outlet 222 is formed on the left side of the upper space, and the return airflow outlet 221 is formed on the right side of the lower space.
(9) The outside air detection sensor 80 detects the temperature and humidity of the outside air.
(10) The return air detection sensor 81 detects the temperature and humidity of the return air.
(11) The setting information storage unit 82 stores the set temperature and the set humidity, which are the setting information.

The heater 10 and the cooler 11 constitute a heat supply device 12. The heater 10 is the first heat exchanger and the cooler 11 is the second heat exchanger. The first static desiccant 30 is a first static dehumidifying device. The second static desiccant 31 is a second static dehumidifying device. The first static desiccant 30 and the second static desiccant 31 constitute a composite dehumidifying device 32.
The first static dehumidifying device, the first static desiccant 30, and the second static dehumidifying device, the second static desiccant 31, are horizontally adjacent to each other in a horizontally installed state. As shown in FIG. 1, the first stationary desiccant 30 and the second stationary desiccant 31 are in the outflow direction in which the return air and the outside air flow out from the first stationary desiccant 30 and the second stationary desiccant 31. On the other hand, they are arranged on the left and right.

The upstream damper 20 causes the return air to flow into one of the static dehumidifying devices of the first static dehumidifying device and the second static dehumidifying device, and the outside air to flow into the other static dehumidifying device. Further, the upstream damper 20 has a return air flow path and an outside air flow path so that the return air and the outside air pass through different static dehumidification devices of the first static dehumidification device and the second static dehumidification device. To switch.

As shown in FIG. 1, the inflow device 210, the heat supply device 12, the upstream damper 20, the composite dehumidifying device 32, the downstream damper 21 and the outflow device 220 are the inflow device 210, the heat supply device 12, the upstream damper 20, and the composite dehumidifying device. 32, the downstream damper 21, and the outflow device 220 are arranged in this order. As shown in FIG. 1, the inflow device 210, the first heat exchanger heater 10, the upstream damper 20, the composite dehumidifying device 32, the downstream damper 21, and the outflow device 220 are upstream of the return air flow path through which the return air flows. From the inflow device 210 to the downstream, they are arranged in the return air flow path in order. Similarly, the inflow device 210, the second heat exchanger cooler 11, the upstream damper 20, the composite dehumidifying device 32, the downstream dampers 21 and 0220 flow in from the upstream to the downstream of the outside air flow path through which the outside air flows. They are arranged in the outside air flow path in order from the device 210.

<Partition plate>
As shown in FIG. 1, the first partition plate 801 divides the inside of the housing 400 between the inflow device 210 and the upstream damper 20 into upper and lower parts. The heater 10 is located above the first partition plate 801 and the cooler 11 is located below the first partition plate 801. The first partition plate 801 is a quadrangle represented by A, B, C, and D.
The second partition plate 802 divides the inside of the housing 400 from the upstream damper 20 to the downstream damper 21 into left and right. The first stationary desiccant 30 is located on the left side of the second partition plate 802, and the second stationary desiccant 31 is located on the right side of the second partition plate 802. The second partition plate 802 is a quadrangle represented by E, F, G, and H.
The third partition plate 803 divides the inside of the outflow device 220 into upper and lower parts starting from the downstream damper 21. In the outflow device 220, the supply air flows out from the upper side of the third partition plate 803, and the exhaust gas flows out from the lower side of the third partition plate 803. The third partition plate 803 is a quadrangle represented by I, J, K, and L.

<Damper opening / closing device, partition plate opening / closing device>
The air treatment device 500 further includes an upstream damper opening / closing device 320, a downstream damper opening / closing device 321 and a partition plate opening / closing device 350. The upstream damper opening / closing device 320 and the downstream damper opening / closing device 321 are opening / closing mechanisms for opening / closing each sub-damper of the upstream damper 20 and the downstream damper 21. The upstream damper opening / closing device 320 opens / closes the sub dampers 20a, 20b, 20c, and 20d of the upstream damper 20. The downstream damper opening / closing device 321 opens / closes the sub dampers 21a, 21b, 21c, 21d of the downstream damper 21. The partition plate opening / closing device 350 is an opening / closing mechanism for opening / closing the bypass path partition plate 804 described later. By opening the bypass path partition plate 804, the return air bypass path 50, which will be described later, is formed.

<Control device>
The air treatment device 500 further includes a control device 100 that controls an upstream damper opening / closing device 320, a downstream damper opening / closing device 321 and a partition plate opening / closing device 350. As will be described later with reference to FIG. 7, the control device 100 includes an outside air detection sensor 80, a return air detection sensor 81, a setting information storage unit 82, an air supply detection sensor 83, an exhaust detection sensor 84, an upstream damper opening / closing device 320, and the like. The downstream damper opening / closing device 321, the partition plate opening / closing device 350, and the refrigeration cycle device 450 are connected.

*** Explanation of configuration ***
FIG. 7 shows the hardware configuration of the control device 100. The control device 100 is a computer. The control device 100 is a bypass control device, a refrigerant control device, and a damper control device. The control device 100 includes a processor 110 and other hardware such as a main storage device 120, an auxiliary storage device 130, an input interface 140, an output interface 150, and a communication interface 160. In the following, the interface is referred to as IF. The processor 110 is connected to other hardware via the signal line 170 and controls these other hardware.

As a damper control device, the control device 100 switches between the open / closed state of the plurality of sub dampers of the upstream damper 20 and the open / closed state of the plurality of sub dampers of the downstream damper 21 in conjunction with each other.

The control device 100 includes a damper control unit 111, a partition plate control unit 112, a refrigerant control unit 113, a heater control unit 114, and a dehumidification amount determination unit 118 as functional elements. As will be described later in Modification 2, when the air treatment device 500 includes a refrigeration cycle, the refrigerant control unit 113 may also serve as the heater control unit 114. The functions of the damper control unit 111, the partition plate control unit 112, the refrigerant control unit 113, the heater control unit 114, and the dehumidification amount determination unit 118 are realized by the control program 101. The control program 101 is stored in the auxiliary storage device 130.

The processor 110 is a device that executes the control program 101. The control program 101 is a program that realizes the functions of the damper control unit 111, the partition plate control unit 112, the refrigerant control unit 113, the heater control unit 114, and the dehumidification amount determination unit 118. The processor 110 is an IC (Integrated Circuit) that performs arithmetic processing. Specific examples of the processor 110 are a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and a GPU (Graphics Processing Unit).

The main storage device 120 is a storage device for storing data. Specific examples of the main storage device 120 are SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory). The main storage device 120 holds the calculation result of the processor 110.
The auxiliary storage device 130 is a storage device that stores data non-volatilely. A specific example of the auxiliary storage device 130 is an HDD (Hard Disk Drive). Further, the auxiliary storage device 130 is a portable recording medium such as an SD (registered trademark) (Secure Digital) memory card, a NAND flash, a flexible disk, an optical disk, a compact disc, a Blu-ray (registered trademark) disk, and a DVD (Digital Versaille Disk). There may be. The auxiliary storage device 130 stores the characteristics of the first stationary desiccant 30 and the second static desiccant 31. The damper control unit 111, the heater control unit 114, and the dehumidification amount determination unit 118 can refer to this characteristic.

The input IF 140 is a port to which various devices are connected and data of various devices are input.
The output IF 150 is a port to which various devices are connected and a control signal is output to the various devices by the processor 110.
The communication IF 160 is a communication port through which various devices and the processor 110 communicate with each other. In FIG. 7, the communication IF 160 includes an outside air detection sensor 80, a return air detection sensor 81, a setting information storage unit 82, an air supply detection sensor 83, an exhaust detection sensor 84, an upstream damper opening / closing device 320, a downstream damper opening / closing device 321 and a partition. The plate switchgear 350 and the refrigeration cycle device 450 are connected. An indoor humidity sensor 85 that detects the humidity in the room ventilated by the air treatment device 500 is connected to the communication IF 160.

The processor 110 loads the control program 101 from the auxiliary storage device 130 into the main storage device 120, and reads and executes the control program 101 from the main storage device 120. Not only the control program 101 but also the OS (Operating System) is stored in the main storage device 120. The processor 110 executes the control program 101 while executing the OS.

The control device 100 may include a plurality of processors that replace the processor 110. The plurality of processors share the execution of the control program 101. Each processor, like the processor 110, is a device that executes the control program 101.

The data, information, signal values and variable values used, processed or output by the control program 101 are stored in the main storage device 120, the auxiliary storage device 130, or the register or cache memory in the processor 110. The control program 101 "processes", "procedures" or "processes" the "units" of the damper control unit 111, the partition plate control unit 112, the refrigerant control unit 113, the heater control unit 114 and the dehumidification amount determination unit 118. It is a program that causes a computer to execute each process, each procedure, or each process.

The control method is a method performed by the control device 100, which is a computer, executing the control program 101. The control program 101 may be stored in a computer-readable recording medium and provided, or may be provided as a program product.

The operation of the control device 100 corresponds to the control method. The operation of the control device 100 corresponds to the processing of the control program.

The upstream damper 20 switches between the return air flow path and the outside air flow path so that the return air and the outside air pass through different static dehumidifying desiccants between the first static desiccant 30 and the second static desiccant 31. In FIG. 1, the return air flow path RA (1) flows into the second stationary desiccant 31, and the outside air flow path OA (1) flows into the first stationary desiccant 30.

As shown in FIG. 1, the heater 10 is installed above the cooler 11. Specifically, the heater 10 is arranged above the cooler 11 with respect to the direction of gravity.
On the contrary, the cooler 11 may be arranged above the heater 10 with respect to the direction of gravity.

*** Explanation of operation ***
<First damper state>
The return air flow path RA (1) and the outside air flow path OA (1) in the first damper state will be described with reference to FIG. As shown in FIGS. 1 and 4, in the first damper state, the outside air and the return air bend once immediately after the cooler 11 and the heater 10, respectively, and before the upstream damper 20. Specifically, the outside air indicated by the white arrow bends once immediately after the heater 10 and at the position P (1) immediately before the upstream damper 20. The outside air and the return air flow to either the first stationary desiccant 30 or the second stationary desiccant 31. That is, in the first damper state, when the outside air passes through the first stationary desiccant 30, the return air passes through the second stationary desiccant 31. After passing through the first stationary desiccant 30 and the second static desiccant 31, the outside air and the return air are returned from the outside airflow outlet 222 and the return airflow outlet 221 which are on a straight line as they are, and the outside air is supplied and returned. Outflows as exhaust.

The course of return air in the first damper state is as follows.
(1) The return air flows in from the return airflow inlet 211 of the inflow device 210, flows out from the outflow port 212 of the inflow device 210, and flows on the first partition plate 801.
(2) The return air flows into the heater 10 and then into the upstream damper 20.
(3) In the upstream damper 20, as shown in FIG. 1, of the four sub dampers 20a, 20b, 20c, 20d, the sub dampers 20a, 20c are on the upper side of the first partition plate 801. Since the sub-damper 20a of the sub-dampers 20a and 20c is open, the return air passes through the sub-damper 20a, heads for the second stationary desiccant 31, and flows into the second static desiccant 31.
(4) In the downstream damper 21, the sub damper 21b is open among the sub dampers 21a and 21b on the right side. Therefore, the return air flowing into the second stationary desiccant 31 passes through the sub-damper 21b, flows into the outflow device 220, and flows out from the return airflow outlet 221 of the outflow device 220.

The course of the outside air in the first damper state is as follows.
(1) The outside air flows in from the outside airflow inlet 213 of the inflow device 210, flows out from the outflow port 214 of the inflow device 210, and flows under the first partition plate 801.
(2) The outside air flows into the cooler 11 and then into the upstream damper 20.
(3) In the upstream damper 20, since the sub damper 20d of the sub dampers 20b and 20d is open, the outside air passes through the sub damper 20d, heads for the first static desiccant 30, and goes to the first static desiccant 30. Inflow.
(4) In the downstream damper 21, the sub damper 21c is open among the sub dampers 21c and 21d on the left side. Therefore, the outside air that has flowed into the first stationary desiccant 30 passes through the sub-damper 21c, flows into the outflow device 220, and flows out from the outside airflow outlet 222 of the outflow device 220.

<Second damper state>
The return air flow path RA (2) and the outside air flow path OA (2) in the second damper state will be described with reference to FIGS. 2 and 6. As shown in FIGS. 2 and 6, in the second damper state, the outside air and the return air pass through the cooler 11 and the heater 10, respectively, and then the upstream damper 20 and the second stationary type are on their respective straight lines. It flows through the desiccant 31 and the first stationary desiccant 30. After that, immediately after the downstream damper 21 flows out, it bends once at the position P (2) in front of the return airflow outlet 221 and the outside airflow outlet 222, and the return airflow outlet 221 and the outside airflow outlet 222 flow out.

The course of return air in the second damper state is as follows.
(1) The return air flows in from the return airflow inlet 211 of the inflow device 210, flows out from the outflow port 212 of the inflow device 210, and flows on the first partition plate 801.
(2) The return air flows into the heater 10 and then into the upstream damper 20.
(3) In the upstream damper 20, as shown in FIG. 2, since the sub-damper 20c is open, the return air passes through the sub-damper 20c and heads for the first stationary desiccant 30, and the first stationary desiccant 30. Inflow to.
(4) In the downstream damper 21, the sub damper 21d is open. Therefore, the return air that has flowed into the first stationary desiccant 30 passes through the sub-damper 21d, flows into the outflow device 220, and flows out from the return airflow outlet 221 of the outflow device 220.

The course of the outside air in the second damper state is as follows.
(1) The outside air flows in from the outside airflow inlet 213 of the inflow device 210, flows out from the outflow port 214 of the inflow device 210, and flows under the first partition plate 801.
(2) The outside air flows into the cooler 11 and then into the upstream damper 20.
(3) In the upstream damper 20, since the sub damper 20b out of the sub dampers 20b and 20d is open, the outside air passes through the sub damper 20b, heads for the second static desiccant 31, and goes to the second static desiccant 31. Inflow.
(4) In the downstream damper 21, the sub damper 21a is open among the sub dampers 21a and 21b on the left side. Therefore, the outside air flowing into the second stationary desiccant 31 passes through the sub-damper 21a, flows into the outflow device 220, and flows out from the outside airflow outlet 222 of the outflow device 220.

As described above, the upstream damper 20 which is the first damper and the downstream damper 21 which is the second damper are interlocked to switch between the return air flow path and the outside air flow path.
The return air flow path alternately passes through the first static dehumidifying device, the first static desiccant 30, and the second static dehumidifying device, the second static desiccant 31, according to the switching, and returns. It has a part corresponding to the change in the direction of air flow before and after switching.
The outside air flow path alternately passes through the first static desiccant 30 and the second static desiccant 31 so as to pass through a static dehumidifying device different from the static dehumidifying device through which the return air flow path passes according to the switching. At the same time, it has a portion corresponding to the change in the flow direction of the outside air before and after the switching.

In FIGS. 1 and 2, the side on which the return air and the outside air flow in is referred to as the front surface, and the side on which the return air and the outside air flow out is referred to as the back surface.
FIG. 8 is a schematic front view of the air treatment device 500.
FIG. 9 is a schematic rear view of the air treatment device 500. FIG. 8 shows a state in which the heater 10 into which the return air flows is arranged on the cooler 11 into which the outside air flows. In FIG. 9, in the downstream damper 21, the sub dampers 21a and 21d are open, and the sub dampers 21b and 21c are closed.

As shown in FIGS. 1 and 2, the upstream damper 20 and the downstream damper 21 are a set of four sub-dampers. That is, the upstream damper 20 includes the sub dampers 20a, 20b, 20c, and 20d, and the downstream damper 21 includes the sub dampers 21a, 21b, 21c, and 21d.

The heater 10 may be a water / air heat exchanger through which hot water flows, or a direct expansion type refrigerant / air heat exchanger through which a high temperature refrigerant flows. The cooler 11 may be a water / air heat exchanger through which cold water flows, or may be a direct expansion type refrigerant / air heat exchanger through which a low temperature refrigerant flows.

The first static desiccant 30 and the second static desiccant 31 are heated by returning air based on the amount of dehumidified outside air indicating the amount of dehumidified to be dehumidified from the outside air.

The case where the first static desiccant 30 and the second static desiccant 31 are heated by the return air based on the amount of dehumidified outside air will be described. Hereinafter, the first stationary desiccant 30 will be described with attention.
The amount of dehumidified outside air that should be dehumidified from the outside air is
It can be calculated from the difference between the humidity in the room where the air treatment device 500 is installed and the set humidity in the room, or the difference between the humidity of the outside air and the set humidity.
The damper control unit 111 and the heater control unit 114 calculate the amount of dehumidification of the outside air based on these differences. The second stationary desiccant 31 is the same as the first stationary desiccant 30.

The control device 100 changes the heating amount of the desiccant by returning air according to the amount of dehumidified outside air. The control device 100 executes the following three controls of switching timing control 100A, heating start control 100B, and heating capacity control 100C in order to change the heating amount of the desiccant. The control device 100 returns air to the first stationary desiccant 30 and the second static desiccant 31 by controlling at least one of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C. Controls the amount of heating by. The switching timing control 100A controls the switching timing at which the upstream damper 20 switches between the return air flow path and the outside air flow path based on the outside air dehumidification amount.
The heating start control 100B controls the heating start time of the return air by the heater 10 based on the amount of dehumidification of the outside air. The heating capacity control 100C controls the heating capacity of the return air by the heater 10 based on the amount of dehumidified outside air. As described above, the control device 100 adjusts the heating amount for the desiccant by any one or a combination of the three control methods of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C.

The control device 100 increases the amount of heating by returning air to the first static desiccant 30 and the second static desiccant 31 as the amount of dehumidification of the outside air increases. Further, the control device 100 reduces the amount of heating by returning air to the first static desiccant 30 and the second static desiccant 31 as the amount of dehumidification of the outside air decreases.

FIG. 10 is a simplified view of FIGS. 4 and 6 which are top views. The reproduction state 1 and the reproduction state 2 of FIG. 10 correspond to FIG. 6, and the adsorption state corresponds to FIG. In FIG. 10, paying attention to the first stationary desiccant 30, the case where the return air flows into the first stationary desiccant 30 is called the regeneration state 1 and the regeneration state 2, and the outside air flows into the first stationary desiccant 30. This case is called the adsorption state 1. Focusing on the first stationary desiccant 30, it is as follows.
(1) In the regeneration state 1, the high-temperature and low-humidity return air heated by the heater 10 dries and regenerates the first static desiccant 30 after dehumidifying the outside air.
(2) When the damper control unit 111 switches the upstream damper 20, the reproduction state 1 shifts to the suction state 1. In the adsorption state 1, the low-temperature and high-humidity outside air cooled by the cooler 11 is dehumidified by adsorbing moisture to the first static desiccant 30.
(3) When the damper control unit 111 switches the upstream damper 20, the suction state 1 shifts to the reproduction state 2. In the regeneration state 2, the high-temperature and low-humidity return air heated by the heater 10 dries and regenerates the first static desiccant 30 from which the outside air has been dehumidified in the adsorption state 1. Hereinafter, the adsorption state and the regeneration state of the first stationary desiccant 30 are repeated.

FIG. 11 is a diagram showing a control operation of a comparative example of the air treatment device 500 according to the first embodiment. FIG. 11 shows the temperature change of the first stationary desiccant 30 when the first stationary desiccant 30 is focused on. The horizontal axis is time, and the vertical axis is the temperature of the first stationary desiccant 30. The regeneration states 1 and 2 and the adsorption state 1 are the respective states shown in FIG. The temperature T1 is the temperature at which the first stationary desiccant 30 releases moisture from the return air and the first stationary desiccant 30 absorbs moisture from the outside air. In the control of the comparative example shown in FIG. 11, the desiccant switching time _tsw is set according to the adsorption time of the desiccant. FIG. 11 shows t _sw0 , t _sw1 , t _sw2 , and t _sw3 . Δt _sw , which is the interval of the switching time t _sw of the adjacent desiccants, is equal. That is, t _sw3 -t _sw2 = t _sw2 -t _sw1 = t _sw1 -t _sw0 = Δt _sw . In the desorption completion time t _de to the desiccant switching time t _sw1 , the heat of the return air heated by the heater 10 is used to raise the temperature of the first stationary desiccant 30. Specifically, after the desorption completion time t _de when the regeneration of the first stationary desiccant 30 is completed, the continuously heated return air is sent to the first stationary desiccant 30. Then, the first static desiccant 30 becomes overheated and the temperature rises, and the temperature of the first static desiccant 30 reaches the temperature T2 in the switching time t _sw1 . When the outside air flows into the regenerated first stationary desiccant 30 at the switching time t _sw1 due to the damper switching, the time for lowering the temperature of the desiccant until the first stationary desiccant 30 dehumidifies the outside air Δt _dw . The first stationary desiccant 30 starts adsorbing the moisture of the outside air at the time _tad . Therefore, due to the overheating of the first static desiccant 30, the dehumidifying efficiency of the regenerated first static desiccant 30 is lowered in the adsorption state 1. That is, as shown in FIG. 11, the relationship between the desiccant reproduction time t _de and the switching time t _sw 1 is as follows.
t _de ≤ t _sw1 ,
It has become.
Assuming that t _sw1 -t _de = Δt _de , the longer Δt _de , the lower the dehumidifying efficiency after switching the damper. That is, the longer Δt _de , the longer _tad −t _sw1 = Δt _dw . Therefore,
The control device 100 controls the heating amount of the desiccant so that Δt _de ≈ 0.

<Control by control device>
FIG. 12 shows the control by the air treatment device 500 and the control by the comparative example. The broken line shows a part of the graph of the comparative example of FIG. In the control by the air treatment device 500, as shown in FIG. 12, the Δt _de described in FIG. 11 does not occur. It will be described later that Δt _de does not occur. Therefore, t _de = t _sw1 = ta _ad , and the graph showing the control by the air treatment device 500 becomes a horizontal straight line at the temperature T1. That is, under the control by the air processing device 500, the first stationary desiccant 30 has Δt _de = 0. In the air treatment device 500, the control device 100 realizes a horizontal straight line of the temperature T1 shown in FIG. 12 by controlling at least one of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C. The switching timing control 100A is executed by the damper control unit 111 of the control device 100. The heater control unit 114 executes the heating start control 100B and the heating capacity control 100C.

The outline of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C executed by the control device 100 will be described below. As described in the background technology, the heating capacity for the desiccant is set so that when the regeneration of the regeneration side desiccant is completed, the heating capacity for the desiccant reaches before the switching time _tsw of the next air passage in which the air to adsorb the moisture flows. Has been done. Here, the completion of adsorption of the adsorption side desiccant is not guaranteed. However, by controlling the amount of heating to the desiccant, "time required for adsorption = time required to complete desorption" can be obtained. This means t _de = t _sw1 , = _ta d. For example, in the comparative example of FIG. 11, it is possible to control the adsorption completion 5 minutes and the desorption completion 5 minutes by adjusting the heating amount for the desiccant, instead of 5 minutes until the adsorption completion and 3 minutes until the desorption completion.

Also, adjust the amount of heating to the desiccant according to the amount of dehumidified outside air that should be dehumidified from the outside air. Specifically, if the amount of dehumidification of the outside air is small, the amount of water adsorbed is small, that is, the amount of heating required for regeneration of the desiccant can be small.

The control device 100 executes any one of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C, or a combination of two or more of these three. As a result, the control device 100 desorbs and desorbs the regeneration side desiccant without "overheating" during _Δtsw , and is the desiccant immediately after the completion of desorption that has been desorbed without “overheating”, and the regeneration period of the other desiccant is _Δtsw . In the meantime, complete the adsorption of moisture from the outside air. In this case, the outline of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C is as follows. As assumed in FIG. 11, consider a system in which adsorption is completed in 5 minutes and desorption is completed in 3 minutes.
(1) In the case of the switching timing control 100A, the control device 100 switches the damper when the attachment / detachment is completed, that is, after 3 minutes have elapsed. Here, the desiccant on the adsorption side is not adsorbed to the saturated state, but the control device 100 switches the damper.
(2) In the case of the heating start control 100B, the control device 100 starts desorption 2 minutes after the start of adsorption, and delays the desorption start time so that the desorption is completed at the adsorption completion time. Here, the desorption start time is the heating disclosure time of the return air by the heater 10.
(3) In the case of the heating capacity control 100C, the control device 100 reduces the heating amount of the return air by the heater 10 so that the heat amount given to the regeneration side desiccant in 3 minutes is given in 5 minutes.

The control device 100 changes the heating amount of the regeneration side desiccant according to the outside air dehumidification amount which is a necessary dehumidification amount to be dehumidified from the outside air. As described above, the control device 100 changes the heating amount for the regeneration side desiccant by any one or a combination of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C.
(1) In the switching timing control 100A, the control device 100 changes the damper switching time t _sw .
(2) In the heating start control 100B, the control device 100 changes the heating start time for heating the return air with the heater 10.
(3) In the heating capacity control 100C, the control device 100 changes the heating capacity of the heater 10 for heating the return air.

The dehumidifying amount determining unit 118 of the control device 100 obtains the required heating amount of the regeneration side desiccant from the outside air dehumidifying amount as follows.
(1) First, the dehumidification amount determination unit 118 obtains the outside air dehumidification amount.
The dehumidification amount determination unit 118 obtains the outside air dehumidification amount from the difference between the indoor humidity in which the air treatment device 500 detected by the indoor humidity sensor 85 is installed and the set humidity in the room of the setting information storage unit 82. Alternatively, the dehumidifying amount determining unit 118 obtains the outside air dehumidifying amount from the difference between the humidity of the outside air detected by the outside air detection sensor 80 and the set humidity of the setting information storage unit 82.
(2) The dehumidification amount determination unit 118 obtains the heating amount of the regeneration side desiccant from the obtained outside air dehumidification amount as follows.
(3) The outside air dehumidification amount obtained by the dehumidification amount determination unit 118 is expressed as Δx. The amount of heat required for the regeneration of the desiccant, that is, the amount of heat required for the desorption of the desiccant on the regeneration side is a function of the outside air dehumidification amount Δx. If the function is expressed as F and the amount of heating required for regeneration is expressed as J,
J = F (Δx) (Equation 1)
Can be written. In general, the larger the amount of dehumidified outside air Δx, the larger the amount of heating J required for desorption. That is, the function F is an increasing function. According to the formula 1, the dehumidifying amount determining unit 118 of the control device 100 can obtain the heating amount J required for regeneration. The dehumidification amount determination unit 118 may have the correspondence information indicating the correspondence relationship between the outside air dehumidification amount Δx and the heating amount J required for regeneration as the formula 1 or as a table.

From the above, the heating amount J [kJ] required for desiccant regeneration can be calculated. If the required heating amount J [kJ] is set as the target value and the amount of heat exceeding the target value is not supplied to the regeneration side desiccant, the “overheating” of the regeneration side desiccant disappears, and the heating Δtde = 0 in FIG.

The damper control unit 111 can execute the switching timing control 100A by using the required heating amount J [kJ] obtained by the dehumidification amount determination unit 118. Using the required heating amount J [kJ] obtained by the dehumidifying amount determining unit 118, the heater control unit 115 can execute the heating start control 100B and the heating capacity control 100C.

After the dehumidifying amount determining unit 118 obtains the required heating amount J [kJ], the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C are executed as follows.
(1) The damper control unit 111 executes the damper switching timing control 100A. The damper control unit 111 is based on the required heating amount J and the heating capacity Q [kW] of the heater 10.
Calculate Δt _sw = J ÷ Q. The damper control unit 111 switches the damper at the calculated Δt _sw . In the illustrated system, Δt _sw = 3 minutes can be obtained.
(2) The heater control unit 114 executes the heating start control 100B. In the case of Δt _sw = 3 minutes, if Δt _sw is actually 5 minutes, the heater control unit 114 heats the return air by the heater 10 from 2 minutes after t _sw0 in FIG. 11, for example. Delay the heating start time so that it starts.
(3) The heater control unit 114 executes the heating capacity control 100C. Since the required heating amount J is constant, if the heating capacity Q of the heater 10 is reduced, the Δt _sw shown in FIG. 11 becomes longer. In this example, if the heater control unit 114 controls the heating capacity of the heater 10 to be 0.6 times, the desorption time is 3 to 5 minutes.

Further, specific control based on the outside air dehumidification amount Δx by the control device 100 will be described. The control in which the control device 100 increases the heating amount of the regeneration side desiccant based on the outside air dehumidification amount Δx is as follows. When the required heat amount J newly obtained by the dehumidification amount determination unit 118 tends to increase, the damper control unit 111 and the heater control unit 114 execute control to increase the heat amount of the regeneration side desiccant.
(1) When the damper control unit 111 increases the heating amount of the reproduction side desiccant by the switching timing control 100A, the return air continues to the first static desiccant 30 and the second static desiccant 31. The switching timing control 100A for increasing the inflow duration _Δtsw is executed. That is, referring to FIG. 11, Δt _sw is increased during the switching time, such as between t _sw0 and t _sw1 , between t _sw1 and t _sw2 , and between t _sw2 and t _sw3 .
(2) When the return air starts to flow into either the first static desiccant 30 or the second static desiccant 31, the heater control unit 114 sets the heating start control 100B by the heater 10 after the inflow starts. When the heating of the return air is started and the heating amount is increased by the heating start control 100B, the heating start control 100B for reducing the time from the start of the inflow of the return air to the start of heating by the heater 10 is executed.
FIG. 13 shows a control in which the heater control unit 114 reduces the time from the start of inflow of return air to the start of heating by the heater 10 when the heating amount is increased by the heating start control 100B. The horizontal axis is time, and the vertical axis is the amount of heat supplied to the first stationary desiccant 30. The heater control unit 114 executes a control for reducing the time between the damper switching time t _sw1 and the start time t _so of heating the return air by the heater 10. In FIG. 13, the heating amount increases toward Q1 under the control of the heater control unit 114. In the comparative example, the amount of heating is constant with the passage of time.
(3) When the heating amount is increased by the heating capacity control 100C, the heater control unit 114 executes the heating capacity control 100C for increasing the heating capacity of the heater 10.

The control in which the control device 100 reduces the heating amount of the regeneration side desiccant based on the outside air dehumidification amount is as follows. When the required heat amount J newly obtained by the dehumidification amount determination unit 118 is on a downward trend, the damper control unit 111 and the heater control unit 114 execute control to reduce the heat amount of the regeneration side desiccant.
(1) When the amount of heating of the reproduction side desiccant is reduced by the switching timing control 100A, the damper control unit 111 continuously returns air to the first static desiccant 30 and the second static desiccant 31. The switching timing control 100A for reducing the inflow duration _Δtsw is executed. That is, with reference to FIG. 11, Δt _sw is reduced during the switching time, such as between t _sw0 and t _sw1 , between t _sw1 and t _sw2 , and between t _sw2 and t _sw3 .
(2) When the return air starts to flow into either the first static desiccant 30 or the second static desiccant 31, the heater control unit 114 sets the heating start control 100B by the heater 10 after the inflow starts. When the heating of the return air is started and the heating amount is reduced by the heating start control 100B, the heating start control 100B for increasing the time from the start of the inflow of the return air to the start of heating by the heater 10 is executed. In FIG. 13, when the heater control unit 114 reduces the heating amount by the heating start control 100B, it increases between the damper switching time t _sw1 and the heating start time t _so of the return air by the heater 10. Perform control.
(3) When the heating amount is reduced by the heating capacity control 100C, the heater control unit 114 executes the heating capacity control 100C for reducing the heating capacity of the heater 10.

<Control based on the amount of water adsorbed>
In the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C, the heating amount of the desiccant is controlled based on the outside air dehumidifying amount. Instead of the above-mentioned outside air dehumidification amount, the heating amount for heating the desiccant may be controlled according to the water adsorption amount Δx obtained from the measured values such as the outside air temperature / humidity, the air volume, and the damper switching time. This control is similar to the case of the outside air dehumidification amount, but in the case of the outside air dehumidification amount, the heater control unit 114 heats the heater 10 from the moisture adsorption amount ΔX actually dehumidified from the outside air. The difference is that the amount is controlled. Specifically, the control is as follows.

The control device 100 returns air to the first stationary desiccant 30 and the second static desiccant 31 by controlling at least one of the switching timing control 100A, the heating start control 100B, and the heating capacity control 100C. Controls the amount of heating by. The switching timing control 100A controls the switching timing at which the upstream damper 20 switches between the return air flow path and the outside air flow path based on the amount of water adsorbed. The heating start control 100B controls the heating start time of the return air by the heater 10 based on the amount of water adsorbed. The heating capacity control 100C controls the heating capacity of the return air by the heater 10 based on the amount of water adsorbed.

The control device 100 increases the amount of heating by returning air to the first static desiccant 30 and the second static desiccant 31 as the amount of water adsorbed increases. Further, the control device 100 reduces the amount of heating by returning air to the first static desiccant 30 and the second static desiccant 31 as the amount of water adsorbed decreases.

That is, when the amount of water adsorbed by the desiccant from the outside air is large, the amount of heating when heating the desiccant by the return air is increased, and when the amount of water adsorbed by the desiccant from the outside air is small, the desiccant is heated by the return air. Reduce the amount of heating. The control of the heating amount when the amount of water adsorption is large is the same as the control of the heating amount when the amount of outside air dehumidification is large, and the control of the heating amount when the amount of water adsorption is small is the same as the control of the heating amount when the amount of water adsorption is small. Since it is the same as the control of the heating amount when the amount is small, the description thereof will be omitted.

*** Effect of Embodiment 1 ***
By controlling the heating of the desiccant by the control device 100 of the first embodiment, the desiccant regenerated by the return air is not overheated, and the temperature rise of the desiccant can be suppressed. Therefore, the upstream damper 20 allows the desiccant immediately after switching the air passage to immediately after regeneration to start adsorbing moisture from the outside air, so that the amount of dehumidification per unit time is improved. In addition, since unnecessary heating is not performed on the desiccant, the energy required for heating can be reduced.

<Modification 1>
Next, a modification 1 in the first embodiment will be described. Modification 1 is a total heat exchanger in the air treatment device 500 so as to straddle the supply air flow path and the return air flow path between the heat supply device 12 including the heater 10 and the cooler 11 and the inflow device 210. It is a configuration in which 40 is arranged.
In the total heat exchanger 40, the return air flowing out of the inflow device 210 flows in, the return air flows into the heater 10, the outside air flowing out of the inflow device 210 flows in, and the outside air flows into the cooler 11.

FIG. 14 shows the air treatment device 500 of the modification 1 in the first damper state.
FIG. 15 shows the air treatment device 500 of the modification 1 in the second damper state. In the first modification, the configuration of the inflow device 210 is different.
As shown in FIG. 14, in the modified example 1, in the inflow device 210, the outflow port 212 from which the 2 return air flows out is formed in the lower left, and the outflow port 214 from which the 2 outside air flows out is formed in the upper right.
This is because the return air needs to flow under the first partition plate 801 and the outside air needs to flow over the first partition plate 801. This means that the return air flows into the total heat exchanger 40 from the lower side of the total heat exchanger 40 and flows out from the upper side of the total heat exchanger 40, and the outside air flows from the upper side of the total heat exchanger 40 to the total heat exchanger 40. This is because it flows in and flows out from the lower side of the total heat exchanger 40. The flow after the outside air and the return air flow out of the total heat exchanger 40 is the same as that of the air treatment device 500 of FIGS. 1 and 2.

<Heat exchange mode>
The heat exchange mode will be described below. The heat exchange mode means that the return air and the outside air perform total heat exchange in the total heat exchanger 40.
(1) As shown in FIGS. 14 and 15, the outside air and the return air having a lower temperature and humidity than the outside air flow into the total heat exchanger 40. In the total heat exchanger 40, the outside air and the outside air exchange heat with each other for temperature and humidity.
(2) At this time, the bypass path partition plate 804 forming the bypass path 50 is closed, and the return air does not bypass the total heat exchanger 40. That is, when the bypass path partition plate 804 is closed, the return air flows into the total heat exchanger 40 and flows from the total heat exchanger 40 into the heater 10. The return air flowing into the heater 10 has a high temperature and a low relative humidity.
(3) As described above, the four sub-dampers 20a, 20b, 20c, 20d of the upstream damper 20 can be controlled to open and close, and the four sub-dampers 21a, 21b, 21c, 21d of the downstream damper 21 can also be controlled to open and close. It is possible.
(4) As described above, the sub dampers 21a, 21b, 21c, 21d of the downstream damper 21 are in an open / closed state opposite to the open / closed state of the sub dampers 20a, 20b, 20c, 20d of the upstream damper 20. An upstream damper opening / closing device 320 is connected to the sub dampers 20a, 20b, 20c, 20d, and a downstream damper opening / closing device 321 is connected to the sub dampers 21a, 21b, 21c, 21d. The upstream damper opening / closing device 320 opens / closes the sub dampers 20a, 20b, 20c, 20d. The downstream damper opening / closing device 321 opens / closes the sub dampers 21a, 21b, 21c, 21d. The damper control unit 111 of the control device 100 controls the opening and closing of the sub dampers 20a, 20b, 20c, 20d by controlling the upstream damper opening / closing device 320, and controls the downstream damper opening / closing device 321 to control the sub dampers 21a, 21b. , 21c, 21d are controlled to open and close.
(5) In the case of FIG. 15, the sub damper 20b and the sub damper 20c of the upstream damper 20 are open, and the sub damper 20a and the sub damper 20d are closed.
(6) In the downstream damper 21, the sub damper 21a and the sub damper 21d are open, and the sub damper 21b and the sub damper 21c are closed.

After passing through the upstream damper 20, the return air flows into either the first stationary desiccant 30 or the second stationary desiccant 31. In FIG. 15, in the first stationary desiccant 30 into which the return air flows, the adsorbed water evaporates and dries. The return air flowing into the first stationary desiccant 30 has a lower temperature and an increased relative humidity. The return air flowing into the first stationary desiccant 30 is exhausted through the downstream damper 21. As shown in FIG. 15, when the sub-damper 21d is open, the return air is exhausted from the sub-damper 21d as exhaust gas.

In FIG. 15, the outside air flows into the total heat exchanger 40 and then into the cooler 11, resulting in a low temperature and a high relative humidity.

After passing through the upstream damper 20, the outside air flows into the first stationary desiccant 30 or the second static desiccant 31 according to the open / closed state of the sub dampers 20b and 20d.
In FIG. 15, since the sub damper 20b is open, the outside air flows into the second stationary desiccant 31. In the second static desiccant 31 into which the outside air flows, the second static desiccant 31 adsorbs the moisture of the outside air and dehumidifies the outside air. The temperature of the outside air flowing into and passing through the second stationary desiccant 31 rises, and the relative humidity decreases. The outside air that has passed through the second stationary desiccant 31 is exhausted through the downstream damper 21. Since the sub-damper 21a is open in FIG. 15, the outside air is supplied from the sub-damper 21a as supply air.

In the upstream damper 20, if the sub dampers 20a and 20d are in the closed state, the sub dampers 20b and 20c are in the open state. At this time, in the downstream damper 21, the sub dampers 21a and 20d are in the open state and the sub dampers 21b, 21c is in the closed state. The state of the upstream damper 20 and the downstream damper 21 is referred to as a second damper state (FIG. 15). Further, if the sub dampers 20a and 20d are in the open state, the sub dampers 20b and 20c are in the closed state. At this time, in the downstream damper 21, the sub dampers 21a and 20d are in the closed state and the sub dampers 21b and 21c are open. It is in a state. The state of the upstream damper 20 and the downstream damper 21 is referred to as a first damper state (FIG. 14).

That is, the first damper state is a state in which the return air flows into the second stationary desiccant 31 and the outside air flows into the first stationary desiccant 30 (FIG. 14).
The second damper state is a state in which the return air flows into the first stationary desiccant 30 and the outside air flows into the second stationary desiccant 31 (FIG. 15).
Such a first damper state and a second damper state may be switched after a predetermined time has elapsed. After a predetermined time has elapsed, the damper control unit 111 of the control device 100 passes through the upstream damper opening / closing device 320 and the downstream damper opening / closing device 321 to open / close the sub-damper in the first damper state and the second damper. Switch between the open / closed state of the damper. Alternatively, the damper control unit 111 opens and closes the upstream damper opening / closing device 320 and the downstream damper according to the air temperature / humidity detected by the air supply detection sensor 83 (FIG. 7) or the exhaust temperature / humidity detected by the exhaust detection sensor 84 (FIG. 7). A method of switching between the first damper state and the second damper state may be used via the device 321.

The damper control unit 111 switches between the first damper state and the second damper state, so that the desiccant that adsorbs water and the desiccant that is regenerated are switched. The desiccant that adsorbs moisture is a desiccant that allows the outside air to pass through, and the desiccant that is regenerated is a desiccant that allows the return air heated by the heater 10 to pass through. Therefore, in the air treatment device 500, the dehumidifying operation can be continuously performed.

<Bypass mode>
The bypass mode will be described with reference to FIGS. 14, 15, 16, 17, 17, 18, and 19. In FIGS. 16 to 19, the inflow device 210 is omitted. FIG. 16 is a schematic top view showing the second damper state in the first modification.
FIG. 17 is a schematic bottom view showing the second damper state in the first modification.
FIG. 18 is a schematic side view of the air treatment device 500 when the bypass path 50 is formed.
FIG. 19 is a schematic perspective view of the air treatment device 500 when the bypass path 50 is formed. The bypass mode is a mode in which the return air flows into the heater 10 without flowing into the total heat exchanger 40, and the return air does not exchange total heat with the outside air in the total heat exchanger 40.

The air treatment device 500 has a bypass path 50 in which the return air bypasses the total heat exchanger 40 and heads for the heater 10. By receiving control, the bypass path 50 switches between an on state in which the return air is bypassed and an off state in which the return air is not bypassed. The state in which the bypass path partition plate 804 is open is the on state of the bypass path 50. The state in which the bypass path partition plate 804 is closed is the off state of the bypass path 50.
When the partition plate opening / closing device 350 opens / closes the bypass path partition plate 804, the return air bypass path 50 is turned on / off. As will be described later, the partition plate control unit 112 of the control device 100 controls the partition plate opening / closing device 350 to open / close the bypass path partition plate 804.
The control device 100 is a bypass control device. The partition plate control unit 112 of the control device 100 switches the bypass path 50 between an on state and an off state based on the temperature and humidity of the outside air and the temperature and humidity of the return air.

The bypass path partition plate 804, the plate 805, and the opening 806 will be described below. In FIGS. 14 and 15, these are shown by solid lines. As shown in FIGS. 14 and 15, an opening 806 represented by a quadrangle of m, n, o, and p is formed in a part of the first partition plate 801. Further, a plate 805 represented by n, o, r, and q is arranged in the direction of the Y axis with respect to the total heat exchanger 40. The plate 805 is fixed at a position in the Y-axis direction of the total heat exchanger 40 and does not rotate. The plate 805 prevents outside air from flowing into the side where the heater 10 is arranged without passing through the total heat exchanger 40.
A bypass path partition plate 804 represented by n, o, t, and s is arranged below the first partition plate 801. The bypass path partition plate 804 of FIGS. 14 and 15 is in a closed state. The bypass path partition plate 804 is arranged symmetrically with respect to the first partition plate 801 in a closed state, that is, in a state where the bypass path 50 is not formed, and the return air does not pass through the total heat exchanger 40. It prevents the cooler 11 from flowing into the side where the cooler 11 is arranged. FIG. 19 shows a state in which the bypass path partition plate 804 is in an open state and a bypass path 50 is formed. The bypass path partition plate 804 is rotated by the partition plate opening / closing device 350 with n and o as the axis of rotation. Due to the rotation, t and s of the bypass path partition plate 804 approach r and q of the plate 805, and finally overlap with r and q. When the bypass path partition plate 804 is open, the return air flowing from the lower part of the total heat exchanger 40 does not flow into the total heat exchanger 40, and the opening 806 (opening 806) that appears due to the open state of the bypass path partition plate 804 ( It passes through m, n, o, p) and flows into the heater 10. This return air flow path is the bypass path 50.

The partition plate control unit 112 determines whether or not to bypass the return air as follows. The partition plate control unit 112 determines whether to bypass the return air according to the values detected by the outside air detection sensor 80 and the return air detection sensor 81, and the values set in the setting information storage unit 82.
FIG. 20 is a bypass determination table showing the bypass determination information possessed by the partition plate control unit 112. The bypass determination table is stored in the auxiliary storage device 130. V1 to v12 shown in the bypass determination table indicate a range of values. The partition plate control unit 112 acquires values from the outside air detection sensor 80, the return air detection sensor 81, and the setting information storage unit 82, and the acquired values are the first row v1, v2, v3, and the third row in the bypass determination table. If it corresponds to v7, v8, v9 of, the return air is bypassed. In this case, the partition plate control unit 112 controls the partition plate opening / closing device 350 to open the bypass path partition plate 804.

In the bypass mode, as shown in FIGS. 14, 15 and 18, the total heat exchange between the outside air and the return air whose temperature and humidity are lower than those of the outside air is not performed by the total heat exchanger 40. As a result, the return air and the outside air flow into the heater 10 and the cooler 11, respectively, without exchanging the temperature and the humidity. Subsequent operations are the same as in the heat exchange mode.

Switching between the bypass mode and the heat exchange mode is determined by whether or not the energy required for the heater 10 and the cooler 11 is minimized.
FIG. 21 shows the movement of the outside air on the psychrometric chart. In FIG. 21, the symbols are as follows.
Lo_OA: Outlet outside air of total heat exchanger 40,
Lo_RA: Outlet return air of total heat exchanger 40,
HEXo: Outlet air of cooler 11
ET: Refrigerant evaporation temperature,
I: Air enthalpy,
ΔI_Lo: Change in enthalpy required by the cooler 11 when passing through the total heat exchanger 40,
ΔI_bypass: The enthalpy change required by the cooler 11 when bypassing the total heat exchanger 40.

As shown in FIG. 21, by passing through the total heat exchanger 40, the specific enthalpy change ΔI_bypass required by the cooler 11 is reduced to ΔI_Lo. That is, the cooling capacity required for the cooler 11 is reduced.
On the other hand, the return air that has passed through the total heat exchanger 40 becomes indoor air (air that is hotter and more humid than the return air) (Lo_RA) and flows into the heater 10. In the heater 10, the heating capacity is controlled so that the inflow air becomes lower than a constant relative humidity in order to regenerate the static desiccant. Therefore, the higher the humidity of the air, the larger the heating capacity required by the heater 10. Therefore, by flowing the return air into the total heat exchanger 40, the heating capacity required in the heater 10 is increased.

The required heating capacity and cooling capacity, that is, the required energy, change depending on the state of the outside air and whether the return air flows into the total heat exchanger 40. Therefore, there is a situation where the bypass mode requires less energy than the heat exchange mode. In the air treatment device 500, as described above, when the values acquired from the outside air detection sensor 80, the return air detection sensor 81, and the setting information storage unit 82 satisfy the bypass path ON of the bypass determination table, the partition plate control is performed. The portion 112 opens the bypass path partition plate 804 to form the bypass path 50.

*** Effect of Modification 1 ***
According to the air treatment device 500 of the first modification, the bypass mode and the heat exchange mode are switched according to the state of the outside air while satisfying the required dehumidification amount. Therefore, it is possible to provide an energy-efficient air treatment device that minimizes the required energy.

Further, if the cooler 11 is arranged below the heater 10, the condensed water generated by the cooler 11 does not cover the heater 10, so that the condensed water can be easily recovered.

<Modification 2>
FIG. 22 shows the configuration of the modified example 2. In FIG. 22, the inflow device 210 is omitted. The air treatment device 500 further includes a compressor, a condenser which is a first heat exchanger, an expansion valve, and an evaporator which is a second heat exchanger, and may include a refrigeration cycle device in which a refrigerant circulates. good. Specifically, as shown in FIG. 22, the air treatment device 500 connects the compressor 71, the first heat exchanger, the expansion valve 70, and the second heat exchanger with pipes to circulate the refrigerant. A refrigeration cycle device 450 is provided. The air treatment device 500 uses the first heat exchanger as the heater 10 and the second heat exchanger as the cooler 11.

The control device 100 is a refrigerant control device. The refrigerant control unit 113 of the control device 100 controls the flow rate and temperature of the refrigerant flowing into the first heat exchanger, which is a condenser, and the evaporator, which is a second heat exchanger. The refrigerant control unit 113 of the control device 100 adjusts the rotation speed of the compressor 71 and the opening degree of the expansion valve 70 to increase the heating capacity of the condenser, which is the heater 10, and the evaporator, which is the cooler 11. Control cooling capacity. The heating capacity and the cooling capacity are detected by the outside air detection sensor 80, the return air detection sensor 81, and the setting information storage unit 82, or are set by the setting information storage unit 82, and the refrigerant control unit 113 shown in FIG. 7 determines the heating capacity and the cooling capacity. decide.

By providing the refrigeration cycle device 450, heating and cooling can be performed by a single refrigerant circuit, so that the air treatment device 500 can be compactly configured. Further, since the waste heat generated when the cold heat is generated is used for the heater 10, the energy efficiency can be improved.

Although not shown, an outdoor unit equipped with a heat exchanger and a blower fan may be installed between the heater 10 and the compressor 71 so that the heating capacity can be adjusted.

<Modification 3>
FIG. 23 shows a modification 3. In FIG. 23, the inflow device 210 is omitted. In the third modification, the refrigeration cycle apparatus 450 includes a four-way valve that causes the condenser, which is the first heat exchanger, to function as an evaporator, and the evaporator, which is the second heat exchanger, to function as a condenser. The air treatment device 500 is further arranged downstream of the composite dehumidifying device 32 in the outside air flow path, and includes a humidifying device 90 through which the outside air passes and humidifies the passing outside air when the condenser functions as an evaporator. As shown in FIG. 23, a four-way valve 72 is added to the refrigeration cycle device 450 of the second modification, and a humidifying device 90 for humidifying the outside air is further installed downstream of the downstream damper 21.

The operation during dehumidification is the same as in the modified example 2. By switching the four-way valve 72, the second heat exchanger is used as a condenser (heater). As a result, the outside air is heated by the second heat exchanger and then flowed into the humidifying device 90 to perform humidification. It is not necessary to use a desiccant when humidifying. When the desiccant is used, it is humidified by the moisture released from the desiccant by the outside air, which is opposite to the dehumidification, and further humidified by the humidifying device 90.

Since humidification and dehumidification can be performed with the same air treatment device 500, there is an effect that the air treatment device 500 can be used all year round.

<Supplement to hardware configuration>
The following is a supplement to the hardware configuration of the control device 100. In the control device 100 of FIG. 7, the function of the control device 100 is realized by software, but the function of the control device 100 may be realized by hardware.
FIG. 24 shows a hardware configuration of a modified example of the control device 100. The electronic circuit 600 of FIG. 24 includes a damper control unit 111, a partition plate control unit 112, a refrigerant control unit 113, a heater control unit 114 and a dehumidification amount determination unit 118, a main storage device 120, an auxiliary storage device 130, an input IF 140, and an output. It is a dedicated electronic circuit that realizes the functions of IF150 and communication IF160. The electronic circuit 600 is connected to the signal line 601. Specifically, the electronic circuit 600 is a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, a logic IC, a GA, an ASIC, or an FPGA. GA is an abbreviation for Gate Array. ASIC is an abbreviation for Application Specific Integrated Circuit. FPGA is an abbreviation for Field-Programmable Gate Array. The functions of the components of the control device 100 may be realized by one electronic circuit or may be distributed and realized by a plurality of electronic circuits. As another modification, some functions of the components of the control device 100 may be realized by an electronic circuit, and the remaining functions may be realized by software.

Each of the processor 110 and the electronic circuit 600 is also called a processing circuit. In the control device 100, the functions of the damper control unit 111, the partition plate control unit 112, the refrigerant control unit 113, the heater control unit 114, and the dehumidification amount determination unit 118 may be realized by the processing circuit. Alternatively, the functions of the damper control unit 111, the partition plate control unit 112, the refrigerant control unit 113, the heater control unit 114 and the dehumidification amount determination unit 118, the main storage device 120, the auxiliary storage device 130, the input IF 140, the output IF 150 and the communication IF 160. However, it may be realized by processing circuit storage.

Although the first embodiment including a plurality of modified examples has been described above, one of the first embodiments including a plurality of modified examples may be partially implemented. Alternatively, two or more of the first embodiments including a plurality of modifications may be partially combined and carried out. The present disclosure is not limited to the first embodiment, and various modifications can be made as necessary.

10 heater, 11 cooler, 12 heat supply device, 20 upstream damper, 20a, 20b, 20c, 20d sub-damper, 21 downstream damper, 21a, 21b, 21c, 21d sub-damper, 30 first stationary desiccant, 31 2nd static desiccant, 32 compound dehumidifying device, 40 total heat exchanger, 50 bypass path, 60 refrigerant piping, 70 expansion valve, 71 compressor, 72 four-way valve, 80 outside air detection sensor, 81 return air detection sensor, 82 Setting information storage unit, 83 air supply detection sensor, 84 exhaust detection sensor, 85 indoor humidity sensor, 90 humidification device, 100 control device, 101 control program, 110 processor, 111 damper control unit, 112 partition plate control unit, 113 refrigerant control Unit, 114 heater control unit, 120 main storage device, 130 auxiliary storage device, 140 input IF, 118 dehumidification amount determination unit, 150 output IF, 160 communication IF, 170 signal line, 210 inflow device, 211 return air inlet, 212 Outlet, 213 outside air flow inlet, 214 outflow port, 216, 217,218 partition plate, 220 outflow device, 221 return air flow outlet, 222 outside air flow outlet, 320 upstream damper opening / closing device, 321 downstream damper opening / closing device, 350 partition plate opening / closing Equipment, 400 housing, 450 refrigeration cycle equipment, 500 air treatment equipment, 600 electronic circuit, 601 signal line, 801 first partition plate, 802 second partition plate, 803 third partition plate, 804 bypass path partition plate, 805 plate , 806 opening, 801a 1st partition plate, 802a 2nd partition plate, 803a 3rd partition plate, 810 return air flow path, 811 outside air flow path.

Claims (8)

1. A heat supply device having a heater and a cooler,
   With the damper,
   A composite dehumidifying device having a first static dehumidifying device and a second static dehumidifying device,
   Equipped with
   The heat supply device, the damper and the composite dehumidifying device are
   The heat supply device, the damper, and the composite dehumidifying device are arranged in this order.
   The heater, the damper and the composite dehumidifying device
   From the upstream to the downstream of the return air flow path through which the return air flows, the heaters are arranged in the return air flow path in order from the heater.
   The cooler, the damper and the composite dehumidifying device
   From the upstream to the downstream of the outside air flow path through which the outside air flows, they are arranged in the outside air flow path in order from the cooler.
   The damper is
   Of the first static dehumidifying device and the second static dehumidifying device, the return air is made to flow into one of the static dehumidifying devices, and the outside air is made to flow into the other static dehumidifying device.
   and,
   The return air flow path and the outside air flow path so that the return air and the outside air pass through the static dehumidification device which is different from the first static dehumidification device and the second static dehumidification device. To switch,
   The first static dehumidifying device and the second static dehumidifying device are
   An air treatment device heated by the return air based on the amount of dehumidification to be dehumidified from the outside air.
2. The air treatment device further
   Switching timing control in which the damper controls the switching timing between the return air flow path and the outside air flow path based on the dehumidification amount, and
   Heating start control that controls the heating start time of the return air by the heater based on the dehumidification amount, and
   Heating capacity control that controls the heating capacity of the return air by the heater based on the dehumidification amount, and
   By controlling at least one of
   The air treatment device according to claim 1, further comprising a control device for controlling the amount of heating by the return air to the first static dehumidifying device and the second static dehumidifying device.
3. The control device is
   As the amount of dehumidification increases, the amount of heating by the return air to the first static dehumidifying device and the second static dehumidifying device is increased.
   The air treatment apparatus according to claim 2, wherein the amount of heating by the return air to the first static dehumidifying device and the second static dehumidifying device is reduced as the amount of dehumidification decreases.
4. The control device is
   When the heating amount is increased by the switching timing control, the switching that increases the duration of continuous inflow of the return air into the first static dehumidifying device and the second static dehumidifying device. Execute timing control and
   When the return air starts to flow into either the first static dehumidifying device or the second static dehumidifying device, the return air is heated by the heater after the inflow is started as the heating start control. In addition, when the heating amount is increased by the heating start control, the heating start control for reducing the time from the start of inflow of the dehumidifier to the start of heating by the heater is executed.
   The air treatment apparatus according to claim 3, wherein when the heating amount is increased by the heating capacity control, the heating capacity control for increasing the heating capacity of the heater is executed.
5. The control device is
   When the heating amount is reduced by the switching timing control, the switching that reduces the duration of continuous inflow of the return air into the first static dehumidifying device and the second static dehumidifying device. Execute timing control and
   As the heating start control, when the return air starts to flow into either the first static dehumidifying device or the second static dehumidifying device, the return air is heated by the heater after the inflow starts. And when the heating amount is reduced by the heating start control, the heating start control for increasing the time from the start of the inflow of the dehumidifier to the start of heating by the heater is executed.
   The air treatment apparatus according to claim 3, wherein when the heating amount is reduced by the heating capacity control, the heating capacity control for reducing the heating capacity of the heater is executed.
6. The air treatment device further
   It has a compressor, a condenser, an expansion valve and an evaporator, and is equipped with a refrigeration cycle device in which the refrigerant circulates.
   The heater is
   The condenser is used
   The cooler
   The air treatment apparatus according to any one of claims 1 to 5, wherein the evaporator is used.
7. The air treatment device further
   The air treatment device according to claim 6, further comprising a refrigerant control device that controls the flow rate and temperature of the refrigerant flowing into the condenser and the evaporator.
8. The refrigeration cycle device further
   A four-way valve that causes the condenser to function as the evaporator and the evaporator to function as the condenser is provided.
   The air treatment device further
   4. Item 7. The air treatment apparatus according to Item 7.

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