JPH0532982U - Cold air blowing duct for freezing containers, etc. - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the ceiling duct for blowing cold air that extends in the front-rear direction on the lower surface of the ceiling of a refrigerating container, and to increase the amount of cold air blown from the side of the duct. [Structure] In a refrigerating container, a cold air blowing duct 2 is provided which is connected to an evaporator 1 and has an opening 4 on a side surface thereof and which is provided on a lower surface of a ceiling.
Inside, a baffle plate (3) was installed in the shape of an "8" toward the rear.
Then, the cold air is urged laterally by the baffle plate so that the cold air is easily blown out from the opening 4 provided in the side portion of the duct.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cold air duct of a refrigerating container in which a van type refrigerating vehicle or a refrigerating container (hereinafter referred to as a refrigerating container) has an upper blowing method as a cold air circulating method and a duct for blowing cold air is provided on a ceiling surface. Is.

[0002]

[Prior Art]

 Generally, in a refrigeration container, cold air is circulated through the upper part of the system, of which a duct is provided in the interior / ceiling surface of the refrigerated container, the circulation of cold air is as follows (see Fig. 2). An evaporator a is provided at the front part of the inside of the refrigerator, and the cold air that has undergone heat exchange with the evaporator a is blown out by the forced fan b through the ceiling duct c, passes between cargoes, and the floor ventilation level at the lower part. It returns to the evaporator a through the route d and keeps the inside of the chamber at a predetermined set temperature.

By the way, holes e are provided on both sides of the ceiling duct c in the longitudinal direction thereof, and it is considered that cold air is blown out from the side of the ceiling duct c and is evenly distributed to the entire inside of the refrigerator. . However, in the above duct shape, most of the cool air is blown out from the rear outlet c'of the cool air blowing duct b, so that only a small amount is blown out from the holes e (Fig. 3) on both side surfaces, and therefore the side portion. Although various attempts were made by changing the diameter and pitch of the holes e and reducing the opening area of the rear outlet c ′, good results were not obtained.

[0004]

[Problems to be solved by devising]

 The present invention was devised in view of the above-mentioned problems of the prior art, and aims to improve the ceiling duct for blowing cold air extending in the front-rear direction to increase the amount of cold air blown from the side of the duct. With the goal.

[0005]

[Means for Solving the Problems]

 In the refrigerating container, a baffle plate 3 having an “eight” shape is provided rearward in a cold air blowing duct 2 which is in communication with the evaporator 1 and has an opening 4 on a side surface.

[0006]

【Example】

 A description will be given based on the figure. FIG. 1 shows the structure of a duct according to the present invention. As shown in the figure, a baffle plate 3 which extends in an eight-shape toward the rear is installed in a horizontal duct 2 which communicates with the evaporator 1 and extends in the longitudinal direction of the refrigerating container. As a result, the linear flow of cold air from the evaporator 1 hits the baffle plate 3 and is urged toward the side and toward the opening 4, so that the cold air flows from the opening 4 provided on the side of the duct 2. Is blown out stably.

[0007]

【effect】

 Since the figure-8 baffle plate 3 is attached to the rear side in the longitudinal direction in the cold air duct, the flow of the cold air is directed outward, and the amount of air blown from the side surface of the duct 2 is increased. On average, cold air is blown out in all directions. Therefore, the set temperature in the refrigerator is made more uniform.

[Brief description of drawings]

FIG. 1 is a perspective view of a cold air blowing duct according to the present invention.

FIG. 2 shows a circulating state of cold air in a refrigeration container.

FIG. 3 is a perspective view showing a configuration of a conventional cold air blowing duct.

[Explanation of symbols]

 a evaporator b forced fan c ceiling duct d ventilation rail e hole 1 evaporator 2 horizontal duct 3 baffle plate 4 hole

Claims (1)

[Scope of utility model registration request] 1. In a refrigerating container, a baffle plate having an "eight" shape toward the rear is provided in a cold air blowout duct (2) provided with an opening (4) on a side surface and communicating with an evaporator (1) and provided on a lower surface of a ceiling. A cold air blowing duct for a refrigerating container or the like, which is provided with (3).