JPS63108148A - Feeding heat and discharged heat recovery system - Google Patents

Abstract

PURPOSE:To always utilize cold heat of outdoor air irrespective of seasons summer, winter or intermediate seasons and perform a proper and efficient full heat exchanging operation by a method wherein a thermal medium circulation device is combined with an air feeding device having a water spray unit and with an air discharging device, and a microcomputer for use in discriminating input signals from various sensors and controlling operation of each of devices is installed. CONSTITUTION:A microcomputer 5 always detects both temperature and humidity in a room R by each of sensors 41 and 42, detects a present situation obtained by each of sensors 43 and 44 for the number of occupants in a room acting as a source of generating heat and a source of generating humidity as well as an internal load of an indoor installed equipment acting as a source of generating heat, a temperature and a humidity of outdoor atmosphere A through an input signal from each of sensors 45 and 46. It further compares and judges an radiation heat caused by solar rays with a surrounding condition modified by an input signal from a sensor 47, outputs a driving signal so as to get a proper amount of feeding air, a discharging amount, a heating exchanging amount and a water spray amount and controls operation of an air feeding fan 11, a discharging fan 21, a thermal medium circulation pump 31 and water pumps 15 and 25, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air supply/exhaust heat recovery system using a microcomputer.

[Conventional technology]

Conventionally, total heat (temperature, humidity) exchangers, such as the one shown in the plan view in Figure S2, have been used for air conditioning in buildings, hospitals, factories, and other structures where a large number of people are located.

This total heat exchanger is provided with a rotary heat exchange rotor r rotated by a rotor drive motor Mr and a partition plate p in a rotor chamber Kr located in the center of a casing formed into a cube. On both sides of r, an air supply chamber Ks having an air supply fan Fs and an exhaust chamber e having an exhaust fan Fe are arranged. The fresh outside air A is sent to the rotor chamber through r and the air supply fan Fs to a room R (not shown) as fresh air supply a, while the dirty air e is sent from the room R to the rotor chamber. After passing through Kr and the exhaust fan Fe, it is discharged to the outside as dirty exhaust gas E. When passing through this rotor chamber, the outside air A and the return air e exchange heat with each other due to the rotation of the heat exchange rotor r.

In this rotary total heat exchanger system, for example, in summer, outside air at 32°C is supplied to room R at a temperature of 27.8°C, and in winter, outside air at AO°C is supplied as air. a1
It is supplied at a temperature of 8.2°C, and the heat exchange rate is extremely good. However, due to the combination of 1 unit of air supply, there is migration of bacteria and dust, and contamination of exhaust components adsorbed and attached to the element.
The scope of use may be specified in order to correct shortcomings such as the troublesome maintenance of rotating parts.

Furthermore, there is an air conditioning system shown in FIG. 3 that uses a run-around system that does not mix supply and exhaust air.

In the figure, Cs is a heat recovery device on the air supply side, which is equipped with a heat exchange coil C7 and a water sprayer F, which is located on the 1:flow side of the air flow with respect to the coil C, and injects city water W. It is something that Further, Ce is an exhaust side heat recovery device, which is configured almost the same as the air supply side heat recovery device Cs, and has a heat exchange coil C.
2 and a water sprayer F2. Then, a circulation pump P is used to circulate water or brine as a heat refrigerant.
.

Heat/refrigerant circulation device J connecting heat exchange coils 01 and C2
is provided.

With the above configuration, for example, in summer,
When the outside air A at 33°C and 63% is operated by the heat/refrigerant circulation system J, the city water W is used in the water sprayer F2 to heat exchange coil C.
29° C. by passing through the supply air side heat recovery device C3 while cooling the air.

65% air supply a is obtained. In addition, in winter, by using city water W in the water sprayer F and warming the heat exchange coil C2, it is possible to convert -2°C, 50% outside air A to 12°C, 54% air supply a. can.

However, in intermediate seasons such as spring and autumn, the indoor temperature may become higher than the temperature of the outside air A due to internal heat generated from the human body, lighting, and the like.

Therefore, when heat is recovered using these heat exchange devices, the indoor temperature increases, and conversely, cooling becomes necessary, so heat recovery does not save energy.

Therefore, as an interim measure, in the case of the heat/refrigerant circulation system J, the circulation pump P should be stopped, or in the case of the total heat exchanger HC, the supply air system and the exhaust system should be stopped as shown in Fig. 4. Bypass B each with a valve damper VD
must be added.

[Problem that the invention seeks to solve]

Conventional air supply/exhaust heat recovery systems are configured as described above, so they have to manually deal with constantly changing and inconsistent outside air temperature and humidity.
If the operation is extremely complicated, it will not be possible to recover heat in a timely and appropriate manner, resulting in poor efficiency and a lot of wasted energy. In addition, countermeasures during the intermediate period are troublesome, and in some cases, bypass installation is required.

The present invention has been made in view of the above circumstances, and aims to provide a system that always automatically ensures a ventilation volume with appropriate temperature and humidity by recovering air supply and exhaust heat.

[Means for Solving the Problems] The supply/exhaust heat recovery system according to the present invention includes a pair of blowers each including a heat exchanger, a water sprayer, and a blower fan for air supply and exhaust, and It combines a heat/refrigerant circulation device and is further equipped with a microcomputer to detect indoor and outdoor temperatures, humidity, etc., and to control the operation of each device.

(Function) The air supply/exhaust heat recovery system according to the present invention collects data on temperature, humidity, etc. at each required part, compares and judges the data using a microcomputer, and automatically operates each device in accordance with the results. Efficient air conditioning can be performed by adjusting the temperature and ventilation amount to i degrees.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

First, I will explain the configuration.

In this embodiment, as shown in FIG. 1 showing the general configuration, an air supply device 1. Exhaust device 2. Heat/refrigerant circulation device 3. The main components include various sensors 4 and a microcomputer (hereinafter referred to as "microcomputer") 5.

The air supply device 1 and the exhaust device 2 include a water sprayer 16, 26 and an air supply having intake air [112, 22, filters 13, 23, heat exchange coils 14, 24, water pumps 15, 25, respectively, in the housings 11, 21, respectively. Fan 17. It is equipped with 2 parts of trepidation.

The heat/refrigerant circulation device 3 is formed by connecting a circulation pump 31 for sending a heat/refrigerant and a heat exchange coil 14, 24 as a heat exchanger in a circular shape through piping.

Note that M is an inverter attached to each fan 17, 27 and circulation pump 31.

The various sensors 4 include indoor temperature sensors 41 . Indoor humidity sensor 42. Material room personnel sensor 4
3. An internal load sensor 44 and an outside air temperature sensor 45 provided in front of the intake port 12 of the air supply device 1. Outside air humidity sensor 4
6 and a radiant calorimeter sensor 47 provided on the roof.

The mark controller 5 manually receives data signals from various sensors 4 through wiring shown by broken lines, and receives data signals from various sensors 4 using wiring shown by dashed lines.
Outputs drive signals to power equipment such as pumps and fans.

With the above configuration, fresh outside air A is taken in by the intake device 1 and supplied to the room R as clean air A having the desired temperature and humidity. The return air e is sucked out and released to the outside world as exhaust air E. At this time, in summer, the heat/refrigerant circulation device 3
Return air e and water fountain 7 with room temperature passing through 3! The circulation pump 31 is operated to send the thermal refrigerant cooled by the heat exchange coil 24 by the city water W injected from the li heater 26 to the heat exchange coil 14 of the air supply device 1, thereby cooling the outside air A.

In addition, in winter, the heat exchange coil 24 of the exhaust device 2 sends a thermal refrigerant that has absorbed heat from the indoor temperature return air e to the heat exchange coil 14, and the outside air A drawn into the air supply device 1 is transferred to the water sprayer 16. It heats up with water jetted from the air and increases humidity.

On the other hand, even in the intermediate period, the heat/refrigerant circulation device 3 appropriately exchanges heat in response to changes in the temperature and humidity of the outside air A without stopping its operation, and maintains the appropriateness of the air inside the room R.

By the way, the operation of each of the above devices is controlled by microcomputer 5.
is controlled by That is, the microcomputer 5 constantly monitors the temperature and humidity in the room R using the respective sensors 41 and 42, and also monitors the number of people in the room, which is the heat source 9 and the humidity source, and the internal load of the equipment installed in the room, which is the heat source. each sensor 43
, 44, the temperature and humidity of the outside air A are grasped by human signals from the respective sensors 45 and 46, and the radiant heat caused by solar radiation is taken into consideration by obtaining the human signals from the sensor 47. The air supply fan 11 outputs a drive signal to compare and judge the situation in the outside world and to obtain appropriate air supply amount, exhaust amount, heat exchange IT, and water injection amount.
．． Exhaust fan 21. Controls the operation of the heat/refrigerant circulation pump 31 and the water pumps 15, 25.

Depending on the situation, a cooling coil or a heating coil may be installed in the room R and controlled by the microcomputer 5.

〔Effect of the invention〕

As explained above, the present invention combines a heat/refrigerant circulation device with an air supply device and an exhaust device each having a water sprayer, and operates each device by determining input air from various sensors. Because the configuration is such that a microcomputer is installed to control it,
Regardless of summer, winter, or intermediate seasons, outside air cooling and heat can be used at all times, making it possible not only to perform total heat exchange in a positive and efficient manner, but also to ensure proper ventilation.

In addition, not only can the air supply device and the exhaust device be installed separately, but the heat exchanger can also be small and a bypass is not required, making the entire system more compact.Furthermore, freezing can be prevented in cold regions.

Furthermore, since it is combined with a microcomputer, fully automatic operation is possible, and a remarkable effect can be obtained from the aspect of energy saving.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an outline of an embodiment of the present invention, Fig. 2 is a plan view showing an outline of a conventional total heat exchanger, and Fig. 3 is a conventional run-around air conditioning system. Fig. 4 is a block diagram in which a bypass is provided in the total heat exchanger. 1--Air supply device 2--Exhaust device 3-----Heat/refrigerant circulation device 4--Various sensors 5-----Microcomputer 14-- ...Heat exchange coil 16...Water jet 'A' device 17...Air supply fan 24-...Heat exchange coil 26...-Water jet'A device 27- -----Exhaust fan Figure 1

Claims (1)

[Claims] Each of them is equipped with a heat exchanger and a water sprayer, and an air supply device having an air supply fan and an exhaust device having an exhaust fan are arranged, and a heat refrigerant circulation device is combined to mutually exchange heat between the two heat exchangers. An air supply/exhaust heat recovery system characterized in that a microcomputer is used for each component to detect indoor and outdoor air temperature, humidity, etc. and control the operation of each of the devices.