JPH0222025Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to an air conditioner that has a gas mixing device that mixes air in two or more conditions with different temperatures and/or humidity in an air conditioning duct, chamber, etc. It is.

BACKGROUND TECHNOLOGY AND PROBLEMS Air is supplied indoors by mixing outside air with return air in an air conditioner to bring it close to an appropriate temperature for indoor use, and then supplied into the room as air at an appropriate temperature using a heat exchanger or the like. For example, as shown in FIG. 9, a duct 4 for introducing outside air 3 and a duct 6 for introducing return air 5 are connected to an air conditioner 2 equipped with a fine coil (heat exchanger) 1. A method is used to obtain supply air 7 by mixing outside air 3 and return air 5 and adjusting the temperature to an appropriate temperature using a fine coil 1. For example, in winter, when the outside air temperature is -15°C and the return air temperature is -15°C, If the temperature is +25℃, the two types of air cannot mix sufficiently in the air conditioner, and the temperature unevenness on the coil surface will be ±20℃.
There is a risk that the parts of the Fin Coil that are exposed to outside air may freeze. Furthermore, in the method of providing a punching buttful plate 8 in the air supply duct 9 and feeding outside air 3 and return air 5 into it as shown in FIG. The temperature unevenness in is about ±7 to 8℃,
Moreover, the resistance of the full plate 8 reaches about 15 mmAq when the wind speed is 2.5 m/sec. Furthermore, as shown in FIG. 11, even in the method in which the outside air duct and the return air duct are combined in the middle and the outside air 3 and the return air 5 are mixed together and passed through the fine coil 1, the two airs do not mix completely. The temperature unevenness on the surface is about ±5° C., and it may be impossible to arrange the meeting point of both ducts at a sufficient distance upstream of the fin coil 1 due to the unevenness.

Means for Solving the Problems The present invention eliminates the above-mentioned drawbacks, can be easily installed within a short distance inside the air conditioner, and can reliably handle two types of air, e.g., air of different temperatures, without significantly increasing the resistance. The purpose of this invention is to provide an air conditioner having a gas mixing device that can mix gases, and this purpose is to divide the ventilation surface into an appropriate number of
A gas mixing device consisting of vanes that are inclined so that the airflow points inward on each dividing surface is installed between a confluence point of two or more types of air in different states and a heat exchanger installed downstream of the confluence point. This is achieved by providing

Embodiment 1 As shown in FIGS. 1 to 6, the inside of a frame 10 with a square cross section formed to match the shape of the inner surface of the duct is divided into four equal parts by partition frames 11a and 11b. Vanes 1 are provided with an appropriate inclination within each section so that air 5 rotates in the direction of arrow 12.
This is an air conditioner in which an air mixing device comprising air conditioners 3, 13, .

Embodiment 2 As shown in FIG. 7, the inside of a cylindrical frame 10 formed to match the shape of the inner surface of the duct is partitioned into partition frames 11a and 11.
Vanes 13, 13, 1 are divided into six equal parts by b and 11c and have appropriate inclinations in each section so that the two types of air introduced turn in the direction of arrow 12.
This is an air conditioner in which an air mixing device 14 including air conditioners 3... is provided upstream of the fine coil 1 and downstream of the air confluence point, as shown in FIG.

Effect of the invention When two types of air, for example, low-temperature outside air 3 and high-temperature return air 5, are fed into the air conditioner of the present invention, as shown in FIG. A rotating wind is generated toward the center, and both air flows are uniformly mixed by repeating twisting and collision.

As shown in Fig. 8, a gas mixing device (indicated by 14) is inserted into the air supply duct 9 into which the fine coil 1 is inserted, and in winter, outside air 3 at -15°C and return air 5 at +25°C are mixed for 2.5 m. When the air was supplied at a speed of /sec., the temperature difference between the supply air 7a taken from above the air supply duct 9 and the supply air 7b taken from below was less than 1°C, indicating that both airs were well mixed. , the resistance due to the fine coil 1 and the gas mixing device 14 is a wind speed of 5 m/sec.
In the case of , it was only 8 mmAq, and furthermore, no freezing of Finncoil 1 was observed.

Effects of the invention As mentioned above, the gas mixing device in the air conditioner of the present invention has an extremely simple structure, can be manufactured and installed at low cost, and can reliably mix two or more types of air in different states to control temperature and humidity. It is possible to prevent temperature fluctuations within the air conditioner without the risk of freezing the fine coil as in conventional systems, and the energy loss due to use is minimal, allowing the air mixing device to be used in a wide range of air volume in a small space. vertically within the air conditioner chamber.
It has various characteristics and effects, such as being able to be installed horizontally or in any other direction.

In addition, in the above embodiments, two
Although we have described the mixing of different types of air, it goes without saying that two types of air with different humidity can be used in exactly the same way.

[Brief explanation of the drawing]

Figures 1 to 8 show embodiments of the present invention.
The figure is a plan view of the gas mixing device, and Figure 2 is A of Figure 1.
-A sectional view, Figure 3 is a BB-B sectional view in Figure 1, Figure 4 is a C-C sectional view in Figure 1, and Figure 5 is a D-D sectional view in Figure 1. , FIG. 6 is a perspective view of the gas mixing device shown in FIGS. 1 to 5, FIG. 7 is a perspective view showing another example of the gas mixing device, and FIG. 8 is a perspective view of the air conditioner of the present invention. be. 9 to 11 show the prior art, FIGS. 9 and 10 are perspective views showing a conventional air conditioner, and FIG. 11 is a sectional view showing another example of the conventional air conditioner. In the figure, 1 is a fine coil, 3 is outside air, 5 is return air,
7 is an air supply, 8 is a punching buttful plate, 10 is a frame, 11 is a partition frame, 13 is a vane, and 14 is a gas mixing device.

Claims (1)

[Scope of utility model registration request] The ventilation surface is divided into an appropriate number of sections between the convergence point of air flow paths in two or more different states of temperature and/or humidity and a heat exchanger provided downstream of the confluence point, and air flow is applied to each divided surface. 1. An air conditioner having a gas mixing device, characterized in that the gas mixing device is provided with vanes inclined so that the vanes face inward.