JPS59231339A - Air conditioner - Google Patents

Abstract

PURPOSE:To achieve an energy-saving result, by providing a hot water with an air-liquid contact mechanism for utilizing the air-liquid contact mechanism in commonly humidifying and partly heating up the water. CONSTITUTION:An air-liquid contact mechanism 10 and a hot water supplying device T for supplying a hot water to the air-liquid contact mechanism 10 are connected each other through a water passage 24 and a water passage 15. The hot water which is heated up by means of in-liquid combustion burner 18 submerged in the recovery water tank 17 of heating device 16 is pumped to the air- liquid contact mechanism 10 through the water passage 24. The hot water which is then overflowed from the air-liquid contact mechanism 10 and received by a pan 14 is recovered into a recover water tank 17 through the water passage 15 for its recirculation. A strainer S is provided in the recovery water tank 17 for removing bulky refuses and a filter 40 is provided in the water passage 24 for removing a sludge from the hot water inside the recovery water tank 17.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner for maintaining the temperature and humidity in a painting booth or other room at a predetermined value.

For example, in a painting booth, there is a problem in that when the temperature and/or humidity inside the booth changes, the degree of drying of the paint varies, resulting in uneven paint finish. For this reason, conventionally, an air conditioning system as shown in FIG. 1 has been used in order to keep the temperature and humidity within the painting booth substantially constant and to achieve a uniform coating finish.

That is, the air conditioner 2 connected to the painting booth I is connected to the Saran net 3. The air purified through the roll filter 4 is passed through the eliminator 5. Generally, steam is supplied to the painting booth 1 by a blower 9 via a shower set humidifier 6 and an eliminator 7, and further via an Erofin heater 8 to which steam is supplied.

However, according to such a configuration, the air is first humidified by the shower set humidifier 6, then heated by the Erofin heater 8, and then supplied to the painting booth 1.
If heating and humidification are performed separately like this,
When the outside temperature is below zero degrees and it is abnormally dry, such as in winter, the running cost required to maintain the inside of the painting booth 1 at its optimum value (for example, temperature 20 degrees Celsius and humidity 30%) It has the disadvantage that it is bulky and cannot achieve energy savings.

Therefore, the present applicant has previously filed patent application No. 20 of 1982.
No. 4875, by applying a gas-liquid contact mechanism using an extremely efficient humidifying filler as a humidifying device for performing humidification as described above, and supplying heated water to the gas-liquid contact mechanism. In order to reduce running costs and save energy by using a gas-liquid contact mechanism to perform both humidification and heating, we developed a gas-liquid contact mechanism that uses a humidifying filler in the purified air passage. We propose a new invention in which a heated water supply device having a submerged combustion burner installed in a recovery water tank is connected to the gas-liquid contact mechanism, thereby supplying heated water to the gas-liquid contact mechanism. did.

FIG. 2 is a sectional view showing an example thereof, and parts corresponding to those of the conventional device shown in FIG.
The shower set humidifier 6 is omitted, and instead of this, a gas-liquid contact mechanism 10 using a humidifying filler is provided after the roll filter 4, and a direct combustion burner 11 is installed instead of the Erofin Heat 8. A heating device 12 is provided.

A heated water supply device connected to the gas-liquid contact mechanism 10 drips a required amount of heated water from a water tank 13 placed on the upper wall of the mechanism, and the water discharged from the gas-liquid contact mechanism 10 is It is received by the pan 14 formed at the bottom,
It is supplied to the heating device 16 through the water passage 15. The heating device 16 includes a recovery water tank 17 and a submerged combustion burner 18 disposed within the recovery water tank 17.
The water passage 15 is connected to the exhaust fan 19.
A combustion blower 21 is connected to the submerged combustion burner 18, and the output of a temperature regulator 22 is supplied to the submerged combustion burner 18.
The water temperature inside is controlled to a required setting value (for example, 15 to 20°C).

The heated water in the recovery water tank 17 is supplied to the water tank 13 by the pump 23 through the water passage 24, drips into the gas-liquid contact mechanism 10, and while passing through this, comes into contact with the outside air and humidifies the outside air. When the water temperature reaches 1, for example,
The temperature drops from 5-20°C to 8-10°C.

In addition, the heating device 12 supplies a portion of the purified air (for example, about 5 to 15% of the total air amount) with a circulation fan 26 from an intake hole 25 formed on the upper wall surface between the roll filter 4 and the gas-liquid contact mechanism 10. is suctioned, and the suctioned air is supplied to a circulation path 27 in which a direct combustion burner 11 is arranged to heat it,
This heated air is supplied to a rectangular frame annular body 29 provided with a large number of ejection holes 28 disposed on the downstream side of the gas-liquid contact mechanism 10, and is refluxed to the downstream side of the gas-liquid contact mechanism 10.

With the above configuration, for example, assuming that the outside air temperature is 0° C., the blower 9 is started to be driven, the direct combustion burner 11 of the heating device 12 is ignited, and the liquid in the heating device 16 of the heated water supply device is ignited. The medium combustion burner 18 is ignited.

As a result, outside air is purified and introduced into the air conditioner 2 through the wire mesh 3 and the roll filter 4, and most of this purified air is sent to the gas-liquid contact mechanism 10 and supplied to the gas-liquid contact mechanism 10. The water is brought into gas-liquid contact with the heated water heated by the submerged combustion burner 18, and the humidity is, for example, 90 to 9.
5%, humidified and heated to a temperature of 5°C.

On the other hand, a part of the purified air is sent to the heating device 12, heated to about 260° C. by the direct combustion burner 11, and then ejected from the square bar annular body 29. Therefore, the air humidified and heated by the gas-liquid contact mechanism 10 and the air heated by the heating device 12 are mixed at the position of the square frame annular body 29,
Air adjusted to the desired temperature of 20° C. and humidity of 30% is obtained, and this is supplied to the coating booth 1 through the blower 9 to maintain the interior of the coating booth 1 at the desired temperature and humidity.

In this case, the air introduced into the heating device 12 is not air humidified by the gas-liquid contact mechanism 10 (it is simply purified air, and the surface is also heated by the direct combustion burner 11, so There are various problems that arise when heating using an Erofin heater as in the past, namely, separate steam generation equipment is required, the cost of the steam is very high, and the Erofin heater itself has poor thermal efficiency. All the disadvantages of the interior being easily clogged can be eliminated, and an inexpensive air conditioner with very good thermal efficiency can be obtained.

In addition, in reality, the temperature and humidity inside the coating booth 1 are measured by a temperature detector 30 and a humidity detector 31, respectively, and based on these detected values, the combustion amount of the submerged combustion burner 18, the discharge amount of the pump 23, The combustion amount of the direct combustion type burner 11, the air volume of the circulation fan 26, etc. are appropriately controlled so that the temperature and humidity inside the coating booth are always maintained at appropriate values.

Furthermore, when the work is stopped during breaks or the like, the direct combustion burner 11 and the submerged combustion burner 18 are turned off and the circulation fan 2G and the blower 9 are operated with output reduced by 50%, for example, thereby contributing to energy saving. I can do it.

As described above, the gas-liquid contact mechanism 10 using a humidifying filler is applied as a humidifying device, and the heating device 16 and pump 24 using a submerged combustion burner 18 are used in the gas-liquid contact mechanism 10.
When heated water is supplied by a heated water supply device consisting of a heated water supply device, etc., the purified air is humidified and at the same time moderately heated by the gas-liquid contact mechanism 10, and the humidifying filler has good gas-liquid contact efficiency and Since the medium combustion burner 18 has good heating efficiency, it has an excellent effect in that the running cost required to obtain the desired temperature and humidity can be significantly reduced compared to conventional devices.

However, according to experiments conducted by the present inventors, the gas-liquid contact mechanism 10 using the humidifying filler disposed in the purified air passage as described above is supplied dropwise with heated water from the water tank 13. Therefore, the dust removal efficiency itself is extremely high, and therefore, the dust still present in the purified air is adsorbed and removed to further purify the air. , washed away by heated water supplied from the heating device 1G and received by the pan 14,
It has been newly discovered that sludge is deposited in the recovery water tank 17 of the heating device 16 via the water passage 15.

If such sludge is left unattended, heating device 1
A water passage 24 that supplies heated water from 6 to the gas-liquid contact mechanism 10
In addition, there is a problem that the piping system of the water tank 13 is clogged, and the function of the gas-liquid contact mechanism 10 is deteriorated due to the supply of heated water containing sludge. This means that they must be frequently cleaned once every two to three weeks to remove the settled sludge.

Therefore, the present invention applies a gas-liquid contact mechanism using a humidifying filler as a humidifier, and supplies warm water to this gas-liquid contact mechanism, thereby combining humidification and heating with the gas-liquid contact mechanism. In addition, the filtration device that removes the sludge that is adsorbed and removed from the purified air by the gas-liquid contact mechanism and collected in the collection tank of the heated water supply device is designed to reduce running costs. By interposing it in a water passage connected to a liquid contact mechanism and supplying heated water to the gas-liquid contact mechanism, or a water passage connected to a recovery water tank and recovering heated water from the gas-liquid contact mechanism, the water passage, etc. It is an object of the present invention to provide an air conditioner that can prevent clogging of a pipe system and functional deterioration of a gas-liquid contact mechanism, and at the same time greatly reduce the number of times the very troublesome cleaning of a collection water tank is required.

To achieve this object, the present invention provides an air conditioner that humidifies and heats outside air after purifying it, in which a gas-liquid contact mechanism using a humidifying filler is disposed in the purified air passage. , a heated water supply device for supplying heated water to the gas-liquid contact mechanism is disposed, and the gas-liquid contact mechanism and the heated water supply device are disposed in a recovery water tank of the heated water supply device. The gas-liquid contact mechanism is connected via a water passage that supplies heated water heated by a submerged combustion burner to the gas-liquid contact mechanism, and a water passage that collects the heated water supplied to the gas-liquid contact mechanism into the recovery water tank. , characterized in that a filtration device is interposed in the water passage.

An embodiment of the present invention will be described below.

FIG. 3 is a sectional view showing essential parts of the air conditioner according to the present invention, and parts common to those in FIG. 2 are given the same reference numerals and detailed explanation thereof will be omitted.

In the present invention, the gas-liquid contact mechanism 10 and the heated water supply device T that supplies heated water to the gas-liquid contact mechanism IO are connected by the water passage 24 and the water passage 15, and the recovery water tank 17 of the heating device 16 The heated water heated by the submerged combustion burner 18 disposed inside the pan 1 is supplied to the gas-liquid contact mechanism 10 through the passageway 24, and is drained from the gas-liquid contact mechanism 10 to form the pan 1.
4 through the water passage 15 to the collection tank 1.
It is collected and reused after 7 days.

In addition, a strainer S for removing coarse dust is provided in the recovery water tank 17, and a strainer S for removing coarse dust is provided in the water passage 24, as described above, for removing sludge contained in the heated water in the recovery water tank 17. A filtration device 40 is interposed.

Considering the necessity of frequently replacing the filter 41 of the filtration device 40, and in order to make the filter 41 replaceable without stopping the circulating movement of the heated water, the filter 40 is modified as shown in the figure. The hot water passage is branched, a filter 41 is inserted in each branch passage 42 and 43, and valves 44, 45 are installed before and after each filter 41, 41, respectively.
A so-called bypass type filtration device equipped with a filter is most suitable.

When the air conditioner 2 is in operation, for example, the valves 44 and 45 of the branch passage 42 of the filtration apparatus 40 are first opened, the valves 44 and 45 of the branch passage 43 are closed, and the pump 2 is then closed.
3, the sludge contained in the heated water fed through the water passage 24 to the water tank 13 and the gas-liquid contact mechanism 10 is adsorbed and removed by the filter 41 inserted in the branch passage 42.

From this, clean heated water always flows through the water passage 24, and clean warm water from which sludge has been removed is also supplied to the water tank 13 and the gas-liquid contact mechanism 10. If the pipe system is clogged, the gas-liquid contact mechanism 10
Furthermore, the dust collected in the recovery water tank 17 through the water passage 15 from the gas-liquid contact mechanism 1o is sucked into the water passage 24 along with the heated water by the pump 23, and the dust is removed from the filtration device 40. Since the sludge is adsorbed and removed by the filter 41, the amount of sludge that settles in the collection water tank 17 is significantly reduced, and the number of times the collection water tank 17 must be cleaned is significantly reduced, which is an excellent effect.

When the filter 41 of the branch passage 42 becomes clogged, the valve 44.45 of the branch passage 42 is closed, and at the same time, the valve 44.45 of the branch passage 43 is opened, and the heated water flows into the branch passage. 43, and the filter 41 in the branch path 42 is replaced.

Thereby, the filter 41 can be replaced without interfering with the circulation movement of the heated water.

Note that the filtration device 4o in the present invention is not limited to the case where it is installed in the water passage 24 as shown in this embodiment, but may be installed in the water passage 15 that collects heated water, or Both water channels 24 and 15 may be interposed.

Furthermore, in the present invention, instead of the heating device 12, an Erofin heater 8 as shown in FIG. 1 may be provided on the downstream side of the gas-liquid contact mechanism 10.

Furthermore, it goes without saying that the present invention is applicable not only to paint booths but also to other devices requiring air conditioning equipment.

Furthermore, the filtration device according to the present invention is not limited to the above-mentioned configuration, and can be used with any other filtration device.

As described above, according to the present invention, air that has been purified to a certain degree is humidified and at the same time heated by the heated water supplied to the gas-liquid contact mechanism using the humidifying filler. The filling material has good gas-liquid contact efficiency, and the submerged combustion burner that heats the heated water has good heating efficiency, so it can reach the desired temperature.
It goes without saying that the running cost required to obtain humidity can be significantly reduced compared to conventional devices, and it also reduces the amount of dust still contained in the purified air that is humidified and heated through the gas-liquid contact mechanism. etc. are almost completely removed by the gas-liquid contact mechanism, resulting in further cleaning.

Further, the dust and the like that are removed by the gas-liquid contact mechanism and settle as sludge in the collection tank of the heated water supply device are interposed in the water passage connecting the collection tank and the gas-liquid contact mechanism. Since the sludge is adsorbed and removed by the filtration device, it is possible to prevent the functional deterioration of the gas-liquid contact mechanism if the pipe system is clogged with sludge, and it is also possible to reduce the amount of sludge settling in the collection tank. It has the excellent effect of requiring very few cleanings of the collection tank5.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional air conditioner, FIG. 2 is a sectional view showing an example of a new air conditioner used to explain the present invention, and FIG. 3 is a schematic diagram showing an example of an air conditioner according to the present invention. FIG. Explanation of symbols 1-painting booth, 2--air conditioner, 10--gas-liquid contact mechanism, 13-water tank, 14-pan, 15-flow channel, 16-
Heating device, 17-recovery water tank, 18-submerged combustion burner, 2
3-pump, 24-conduit, 40-filtration device, T-heated water supply device. Patent applicant Trinity Industries Co., Ltd.

Claims (1)

[Claims] In an air conditioner that humidifies and heats outside air after purifying it, a gas-liquid contact mechanism using a salt-filled humidifying material is disposed in the purified air passage, and the gas-liquid contact mechanism is heated. A heated water supply device for supplying hot water is disposed, and the gas-liquid contact mechanism and the heated water supply device are heated by a submerged combustion burner disposed in a recovery water tank of the heated water supply device. a water passage supplying hot water to the gas-liquid contact mechanism;
An air conditioner, characterized in that the gas-liquid contact mechanism is connected to the water passage via a water passage that collects the heated water supplied to the recovery water tank, and the water passage is equipped with a filtration device.