JPH0228344Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a fan coil unit.

(Prior Art) As a prior art in the technical field to which the present invention pertains, there is, for example, "air conditioner/heater having a water drip pan mechanism" described in Japanese Utility Model Publication No. 8312/1983. In this known example, an inclined receiving plate is provided on one side of a casing frame of an air conditioner/heater to guide water leakage from a pipe connection portion downward.

(Problems to be Solved by the Invention) The inclined receiving plate in the above-mentioned known example is provided as a measure against water leakage from the connecting portion of piping (for example, water piping). On the other hand, in general, in fan coil units, dew condensation may occur around the refrigerant pipe connection portion on the side surface of the frame that forms the air flow path, and treatment of this condensed water has become a major issue. However, even if the above-mentioned known means is used as a countermeasure for treating the condensed water, a problem arises in that dew condensation cannot be treated on the frame surface located below the inclined receiving plate.

In addition, a heat insulating material for preventing dew condensation is pasted on the frame surface, but in this case, there is a problem of quality deterioration due to peeling and falling of the heat insulating material.

This invention was made in view of the above points,
The purpose of this invention is to treat dew condensation on the side surface of a frame using simple means without increasing the number of parts.

(Means for Solving the Problems) As a means for solving the above problems, the present invention provides a refrigerant inlet between one side of the cooler 4 and the inner wall of the frame 1 surrounding it, as shown in the attached drawings. and headers 6, 7 which serve as outlets are interposed, and the headers 6, 7 are provided on the header 6, 7 side of the cooler 4.
A blind plate 8 is provided below the cooler 4 to prevent the airflow from bypassing the cooler 4, and the blind plate 8 has slits formed below the mounting portions of the headers 6 and 7 on the side surface of the frame 1. 10
A water droplet guide part 9 is integrally extended through the water droplet guide part 9 and projects outward, and a drain receiver 11 is provided below the water droplet guide part 9 to receive the condensed water flowing down the water droplet guide part 9. It is characterized by

(Function) In the present invention, a blind plate 8 for bypass prevention provided below the headers 6, 7 on one side of the cooler 4 is penetrated through a slit 10 formed below the mounting portion of the headers 6, 7 on the side surface of the frame 1. By integrally extending the water droplet guide portion 9 projecting outward and receiving the condensed water flowing down along the guide portion 9 at the lower drain receiver 11, the condensed water on the frame 1 can be removed. The processing can be carried out without increasing the number of parts, and by forming the slit 10 on the side of the frame 1 for passing through the guide part 9, the upper and lower parts of the slit 10 can be thermally isolated. The desired effect can be obtained.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

This fan coil unit has a fan 2 and a cross-fin coil type cooler 4 arranged in sequence from the windward side to the leeward side within a frame 1 configured to form an airflow passage, and is housed in a casing (not shown). installed and configured.

The frame 1 is composed of side plates 12, 13 and a back plate 14, and the back plate 14 is curved to guide the circulating air flow.

One side plate 13 consists of an upper side plate 13a that constitutes the side wall of the cooler chamber 18, a lower side plate 13b that constitutes the side wall of the fan chamber 17, and a horizontal stepped portion 13c that connects both. A fan motor 3 for driving the fan 2 is disposed on one side.

Inside the frame 1, below the cooler 4, a drain pan 5 is provided to receive the drain falling from the cooler 4.

Between one side of the cooler 4 and the inner wall of the frame 1 (i.e., the upper side plate 13a), there are headers 6 and 7 that serve as inlets and outlets for the refrigerant (chilled water in this embodiment) on the upper side plate 13a. It is interposed in a fixed state on the inner surface.

A blind plate 8 is provided on one side of the cooler 4 and is located below the headers 6 and 7 to prevent airflow from bypassing the cooler 4. The blind plate 8 is connected to the headers 6, 7 and the connecting pipe 1.
It also has the function of guiding the condensed water of 5, 15, . . . to the drain pan 5.

A slit 10 having the same shape and slightly larger than the cross-sectional shape of the blind plate 8 is formed in the upper side plate 13a of the frame 1 at a position facing the blind plate 8; A water droplet guide portion 9 that penetrates through and projects outward is integrally extended. That is, the blind plate 8 is laterally extended to form a water droplet guide section 9, and the water droplet guide section 9 is connected to the slit 1.
This causes it to protrude outward from 0. This water droplet guide section 9 is formed by cooling the surface A of the upper side plate 13a, which is above the guide section 9, with the cold air from the headers 6, 7 and the leeward side of the cooler 4.
It has the effect of guiding the condensation that forms downward.

Below the water droplet guide section 9, there is a drain receiver 11 extending laterally from the drain pan 5 and protruding outward from an opening 16 formed in the upper side plate 13a.
is provided.

Reference numerals 19 and 20 in the drawings are stays that connect the front and rear lower ends of the side plates 12 and 13, and 21 is a partition plate that is located in front of the drain pan 5 and partitions the fan chamber 17 and the cooler chamber 18.

The fan coil unit having the above structure operates as follows.

Air W sucked in by the drive of fan 2
(See FIG. 3) is cooled by exchanging heat with the cold water supplied to the cooler 4, and then blown out. At this time, on the upper side plate 13a of the frame 1, the mounting surface A of the headers 6 and 7 located above the water droplet guide section 9 may be cooled down to below the dew point by the cold water and condensation may occur. The water is guided by the water droplet guide part 9 and flows down to the drain receiver 11 below, where it joins with the drain from the cooler 4, and then is discharged to the outside. Therefore, the upper side plate 13a
This prevents condensed water from dripping and scattering downward, and the influence of water on the fan motor 3 and the like is prevented. In addition, in the upper side plate 13a, the surface B located below the water droplet guide section 9 is connected to the mounting surface A due to the presence of the slit 10 for penetrating the guide section.
(It is cooled by cold water) and is thermally isolated, so it will not be cooled below the dew point and no condensation will occur.

(Effect of the invention) As described above, according to the invention, the blind plate 8 for bypass prevention provided below the headers 6 and 7 on one side of the cooler 4 has a blind plate 8 formed on the side surface of the frame 1 surrounding the cooler 4. A water droplet guide part 9 that penetrates the slit 10 and projects outward is integrally extended so that condensed water generated on the header mounting surface located above the water droplet guide part 9 is guided to the drain receiver 11 below. As a result, condensed water can be treated without providing a heat insulating material or a guide plate made of a separate member, which has the practical effect of reducing costs by reducing the number of parts.

In addition, on the side surface of the frame 1, the surface B located below the water droplet guide part 9 is connected to the header mounting surface A (above the water droplet guide part 9) which is always in a cooled state due to the presence of the slit 10 for penetrating the guide part. There is also the advantage that dew condensation is prevented because it is thermally insulated from the surface located on the surface (the surface located at the top), and there is no need to take measures to prevent or treat dew condensation.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a fan coil unit according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a sectional view of FIG. 2, and FIG.
The figure is a view in the direction of the arrows in FIG. 2 (top only). 1... Frame, 2... Fan, 4... Cooler, 6, 7... Header, 8... Blind plate, 9... Water drop guide section, 10... Slit, 11... Drain receiver.

Claims (1)

[Scope of utility model registration request] Frame 1 configured to form an air flow path
In a fan coil unit in which a fan 2 and a cooler 4 are arranged, headers 6 and 7 are interposed between one side of the cooler 4 and the inner wall of the frame 1, and serve as an inlet and an outlet for the refrigerant. On the header 6, 7 side of the cooler 4, the header 6, 7 is installed.
A blind plate 8 is provided below the frame 1 to prevent the airflow from bypassing the cooler 4, and the blind plate 8 includes a blind plate 8 formed below the attachment portions of the headers 6 and 7 on the side surface of the frame 1. slit 1
A water droplet guide part 9 is integrally extended to penetrate through the water droplet guide part 9 and protrude outward, and a drain receiver 11 is provided below the water droplet guide part 9 to receive the condensed water flowing down the water droplet guide part 9. A fan coil unit characterized by: