JPS613974A - Damper device for showcase - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a damper device for a showcase in which refrigerated and heated products are displayed and sold at a store or the like.

Structure of the conventional example and its problems FIGS. 7 to 11 show a conventional showcase. This conventional showcase will be explained below with reference to FIGS. 7 to 11.

In the figure, reference numeral 1 denotes the main body of the showcase, which is provided with a storage chamber 2 having an opening at the front, and a machine chamber 3 equipped with a cooling chamber at the bottom of this storage chamber 2. At the opening of the storage room 2, there is provided a door 4 which is pivotally supported on one side and can be opened and closed. In addition, display windows 7 made of double glass 5, 6 are provided on three sides of the storage room 2. A heat insulating partition plate 8 is attached to this storage chamber 2 to divide it into two upper and lower chambers. Ducts 9 are formed on both sides of the heat insulating partition plate 80 to communicate the upper and lower chambers. A damper 11 is rotatably mounted inside the duct 9 and is opened and closed by a lever 10. In addition, the earthen wall of the heat insulating partition plate 8 is equipped with a heater 12 for heating the upper chamber side.
is installed.

Reference numerals 13 and 14 are a discharge port and a suction port which are provided on the bottom wall of the storage chamber 2 and communicate with the cooling chamber (not shown). Regarding the damper device of the showcase configured as above, the operation thereof will be explained below. explain.

First, when you want to cool the entire storage room 2, you can open the duct 9 by moving the damper 11 with the lever 10 (
10). Next, when you want to cool the lower side of the storage chamber 2 and warm the upper side of the storage chamber 2, move the damper 11 with the lever 1° to close the duct 9. (state), it is only necessary to energize the heater 12 using a switch (not shown).

However, when using the upper room side as a heating room and the royal room side as a refrigerator room, it is necessary to switch the damper 11 and energize the heater, so it may be necessary to close the duct 9 and energize the heater 12. There was a problem that the upper chamber side could not be heated, and that when the duct 9 was closed and the heater 12 was energized, the heating efficiency of the upper chamber side was deteriorated due to heat conduction of cold air from the lower chamber side. Further, when the duct 9 is opened and the heater 12 is energized, cold air in the lower chamber side and warm air in the upper chamber side convect, resulting in poor cooling and heating, resulting in poor cooling efficiency and heating efficiency.

Purpose of the Invention The present invention is intended to eliminate the problems of the conventional method described above, and to improve cooling efficiency and heating efficiency by closing the duct with a damper whenever the upper chamber is heated. This aims to improve the thermal efficiency of the damper.

Structure of the Invention In order to achieve the above object, the present invention provides a storage chamber with an opening at the front, a door that can be opened and closed to cover the opening of the storage chamber, and a cold air circulation outlet formed on the bottom wall of the storage chamber. an outlet and an inlet, an insulating partition plate that partitions the storage room into two upper and lower chambers, and a duct provided in the insulating partition plate and communicating with the two upper and lower chambers;
A damper provided with a hollow part for opening and closing the duct, an actuating plate made of metal having a shape memory effect that applies force in the direction of opening and closing the damper, and a top plate provided to be able to exchange heat with the damper. The duct is equipped with a heater that heats the room, and when the heater is energized, the duct is closed with a damper.
A fault is provided on the upper chamber side.

DESCRIPTION OF THE EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

In the figure, reference numeral 16 denotes the main body of the showcase, which is provided with a storage chamber 16 having an opening at the front, and a machine chamber 17 equipped with a cooling chamber (not shown) below the storage chamber 16. At the opening of the storage room 16, there is a door 1 which is pivoted on one side and can be opened and closed.
8 is provided.

Display windows 21 made of double glass 19.degree. 20 are provided on three sides of the storage chamber 16.A heat insulating partition plate 22 is attached to the storage chamber 16 to divide it into two upper and lower chambers. A duct 23 is formed on both sides of the heat insulating partition plate 22 to communicate the two upper and lower chambers. The heat insulation partition plate 22
The top surface 24 is formed of an aluminum plate with good thermal conductivity, the bottom surface 25 is formed of an iron plate, and a heat insulating block 27 is sandwiched between them.

A heater 28 attached to aluminum foil is provided on the top surface 24. This heater 28 is for heating the upper chamber side. Reference numeral 29 is an actuating plate having a shape memory effect, the tip of which is bent into an oval shape.

In addition, through holes 33, 34 and elongated holes 34a are provided in the inner wall 36 at both ends of the duct 230 that communicates the two upper and lower chambers, and through holes 34 and elongated hole 34a are provided in the inner wall 35, respectively. And゛,
A through hole 33 is provided in both side walls 30a at the center of the damper 30, which has a medium length portion with an oval cross section, and through holes 34 are provided slightly below the center. Pass through each hole 33, and then insert the bottle 31, which is slightly longer than the connecting bottle 31, into the inner wall 3 of the duct +23.
The damper 30 is formed by bending the actuating plate 29 into a long hole and inserting it into the long hole 34a of the inner wall 36, and fixing one end of the connecting pin 31, 32 with a retaining ring 37, 38, respectively.

Reference numerals 39 and 40 designate a discharge port and a suction port for circulating cold air that communicate with the cooling chamber provided on the bottom wall of the storage chamber 16.

When the heater 28 is energized as described above, the connecting bottle 31
With the connecting bottle 32 as the center of rotation, the actuating plate 29 is displaced upward along the elongated hole 3a of the inner wall 36 and 36 of the duct 23 (as shown in FIG. 6), and the damper 30 is closed as shown in FIG. state. Therefore, the side wall 26 of the duct 23.
Since the duct 23 is closed by contacting the cylindrical recess 26', there is no need to operate the damper 30, and the upper room of the storage chamber 16 can be used for hot storage and the room can be used for cold storage.

Further, by providing a fault between the upper chamber and the lower chamber in the hollow portion of the damper 30, it is possible to reduce heat conduction from the lower chamber and improve thermal efficiency. Further, when the power supply to the heater 28 is cut off, the temperature of the lower chamber, which has been cooled due to the circulation of cold air from the discharge port 39 and the suction port 40, cools the actuating plate 29 through the lower surface 41. As a result, the actuating plate 29 is displaced downward (the state shown in FIG. 6) and the duct 30' is opened (the state shown in FIG. 1), thereby circulating the cold air into the royal room. In addition, heat insulation partition plate 2
The heat of the heater 28 attached to the top surface 24 of the duct 20 is much stronger than the cold temperature transmitted through the lower surface 41 of the duct 23.

Therefore, under the condition that the heater 28 is energized, the actuating plate (29) performs a shape memory operation, applies a rotating force to the duct 23, and securely closes the duct 23. This is intended to reliably reduce heat conduction from the lower chamber side and improve thermal efficiency.

Effects of the Invention As is clear from the embodiments described above, the present invention provides a damper that opens and closes a duct by attaching an actuating plate made of metal with shape memory action to one end of the top surface of a heat insulating partition plate, and heating the upper chamber by the actuating plate. When the heater is not energized, the duct is closed by displacing the actuating plate, and when the heater is not energized,
It is cooled by cold air from the royal side, displacing the operating plate and opening the duct. Therefore, when heating, always close the duct to improve heating efficiency. In addition, the hollow part of the damper creates a fault between the upper chamber side and the lower chamber side, which reduces heat conduction from the lower chamber side to improve thermal efficiency and cooling efficiency, and prevents malfunctions of the damper and heater such as non-cooling of the royal room. This is to prevent

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of the main parts of a showcase showing an embodiment of the present invention, and FIG. Figure 4 is an enlarged sectional view of the main part taken along arrow A-A' in Figure 1, and Figure 4 is Figure 1B.
Fig. 6 is an enlarged sectional view of the main part shown in the direction of arrow -B', Fig. 6 is an enlarged view of the main part showing the damper movement trajectory in Fig. 1, and Fig. 7 is a schematic diagram showing an embodiment of the present invention. - Perspective view of the case, No. 8
The figure is a perspective view of a conventional showcase, Figure 9 is an enlarged view of the main part with a partial cutout of Figure 8 of the same company, Figure 10 is an enlarged sectional view showing the cooling state of Figure 9, and Figure 11 is the same. FIG. 9 Cooling. It is an enlarged sectional view showing a heating state. 22... Heat insulation partition plate, 23... Duct, 28... Heater, 29... Actuation plate,
30... Damper. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 M51O diagram

Claims (1)

[Claims] A storage room with one side open, a door that can be opened and closed to cover the opening of the storage room, an outlet and an inlet for circulating cold air formed in the storage room, and a heat insulating partition that divides the storage room into two upper and lower rooms. A board, a duct provided on the heat insulating partition plate and communicating with the two upper and lower chambers, a damper formed with a hollow part to open and close the duct, and a shape memory effect that applies force to open and close the damper. A damper device for a showcase, comprising: an actuating plate made of metal; and a heater for heating an upper chamber provided to be able to exchange heat with the damper, the damper closing the duct when the heater is energized.