JPS6142018Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coil bypass air conditioner that reduces air pressure loss during coil bypass operation, and aims to increase bypass air flow rate.

In coil bypass air conditioners, as coil bypass operation becomes more common, air pressure loss during bypass operation must also be reconsidered. In other words, in a conventional coil bypass air conditioner, a coil section is generally arranged in a casing with the center line of the air passage as a reference, and a space is secured above or on the side of the coil section, and this is used as a bypass passage. , there is no problem when air passes through the coil, but when bypassing, the airflow is almost perpendicular.
As the airflow bends twice, the pressure loss of the airflow on the bypass side increases, resulting in almost no difference in the pressure loss of the airflow compared to when it passes through the coil section. It was difficult to bypass the desired air flow rate.

In view of the above points, the present invention has been developed so that the air conditioning coil section is
In a coil bypass air conditioner forming a bypass passage between one of the sides and the casing, the coil bypass air conditioner is operated by a link mechanism on the upstream side or both the upstream side and the downstream side of the bypass passage,
A rectifying plate that forms a guide path for the bypass airflow when the coil bypasses, and closes the bypass passage when the coil passes through, and a bypass damper in the bypass passage. It is characterized by smooth changes and prevents air leakage from the bypass damper when passing through the coil.

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a longitudinal sectional side view showing an embodiment of the coil bypass air conditioner of the present invention, showing the state when the coil is bypassed, and FIG. 2 shows the state when the same coil is passing through.

In the figure, 1 is an air conditioner casing, 2 is an air inlet, and 3 is an air introduction passage with a built-in fan 4. A filter 5 is provided inside the casing 1 on the side of the air inlet 2, and a coil portion 6 is disposed between the filter 5 and the end wall 1b. In the embodiment, a bypass passage 7 is provided in the upper part).

The present invention provides a coil bypass air conditioner as described above, in which link mechanisms 8 are provided on the upstream and downstream sides of the bypass passage 7 formed between the upper end of the coil portion 6 and the top wall of the casing 1. The current plate 10 is activated to form a guide path 9 for the bypass airflow as shown in FIG. 1 when the coil is bypassed, and closes the bypass passage 7 as shown in FIG. 7, a bypass damper 11 is provided.

The current plate 10 is an arc-shaped plate arranged in two stages, upper and lower. The upper plate 10a is wide and the lower plate 1 is wide.
0b is narrow and is mounted rotatably around support shafts 12 and 13, respectively, and the shaft ends of support shafts 12 and 13 are connected to upper and lower plates 10a and 10b.
is connected to the link mechanism 8 together with the damper 11 so as to operate in conjunction with the bypass damper 11.

With this configuration, the airflow passing through the bypass passage 7 during coil bypass is guided into the bypass passage 7 by the guide passage 9 formed by the baffle plate 10, and is again guided in the direction of the air introduction passage 3 at the outlet. Therefore, the airflow smoothly passes through the bypass passage 7 and flows into the air introduction passage 3, and the airflow does not bend excessively at the entrance and exit of the bypass passage unlike in conventional air conditioners of this type, and there is no turbulence. Since the air resistance is reduced and air flows easily, the air pressure loss is significantly reduced, and when the coil passes, the bypass damper 11 closes and at the same time the current plate 10 closes the bypass passage 7. This makes it possible to almost completely prevent leakage from the damper 11.

The present invention is configured as described above, and reduces the air pressure loss of the airflow passing through the bypass passage when the coil is bypassed. The amount of air can be increased from about 1/3 of the total air volume to more than 2/3. Therefore, when the coil is bypassed, the amount of air passing through the coil section is reduced, so corrosion due to dirt etc. on the coil can be increased. Not only can this reduce the fan power, it can contribute to energy saving.Also, when the coil passes through, there is almost no leakage from the bypass damper, so the air conditioning can be performed at the design temperature, making it an excellent coil bypass air conditioner. It can be played.

[Brief explanation of the drawing]

The drawings show an embodiment of the coil bypass air conditioner according to the present invention, and FIG. 1 is a longitudinal sectional side view showing the state when the above coil is bypassed, and FIG. 2 is a longitudinal sectional side view showing the state when the same coil is passing through. 1: Casing, 2: Air inlet, 3: Air introduction passage, 4: Fan, 6: Coil part, 7: Bypass passage, 8: Link mechanism, 10: Straightening plate, 11:
bypass damper.

Claims (1)

[Scope of utility model registration request] An air conditioning coil section is arranged in a casing in which an air introduction passage containing a built-in fan and an air inlet are provided facing each other, forming a bypass passage between one side of the casing and the casing. and
A coil bypass air conditioner characterized in that the bypass passage is provided with a current plate and a bypass damper that are interlocked by a ring mechanism and guide bypass airflow.