JPH0271073A - Refrigerator - Google Patents

Abstract

PURPOSE:To smoothly feed cold air, to improve response of temperature control, to prevent a baffle from being refrigerated, and to improve the operation of a damper by rotatably pivoting the top of the baffle, forming a cold air discharge port at the lower part of the baffle, and forming a passage for connecting the lower part of a space to the discharge port and a bypass passage for connecting the upper part of the space to the passage. CONSTITUTION:Since a baffle 22 is in parallel with or crosses at an acute angle the flowing direction of cold air rising in a space to be diffused from a discharge port 18, it does not disturb a cold air passage after the baffle 22 is blown as compared with the case that a damper 20 is disposed vertically. Part of the cold air fed down to the passage is fed from through holes into a passage 72 to be diffused from a diffuser 75 to be concentrically fed from cutouts 42A into a shelf 42, and blown from the diffuser to the shelf. A bypass passage for connecting a passage 66 to a space 63 is formed at the side of the space 63. Part of the cold air raised in a passage 26 is fed to the bypass passage, and its moisture is condensed in the bypass passage. Accordingly, reverse flow cold air to be fed directly into the space 63 is reduced to suppress the refrigeration of the baffle 22.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a refrigerator whose cold air outlet is opened and closed by a damper device.

(b) Prior Art A conventional refrigerator of this kind is disclosed in, for example, Japanese Utility Model Application Publication No. 121183/1983. That is, this type of refrigerator is provided with a damper device that opens and closes an outlet through which cold air is blown out from a blower. The cold air that has passed through this damper device may be discharged upward or forward as it is, or it may be discharged downward to supply it to the storage chamber below, but in both cases, the baffle that opens and closes the air outlet is It is pivotally supported.

(c) Problems to be Solved by the Invention When opening and closing the air outlet by means of a baffle that is pivotally supported at the lower part and supplying cold air to the storage chamber below, the cold air coming out of the air outlet leaks from the upper end and sides of the baffle. Since the cold air flows downward, the circulation is not smooth and the cold air stagnates around the baffle, and this stagnant cold air flows down even after the baffle is closed, so the responsiveness of temperature control is also favorable. There was no problem.

The present invention has been made to solve this problem.

(d) Means for Solving the Problems The present invention provides a refrigerator equipped with a damper device equipped with a baffle for opening and closing a cold air outlet, in which the upper part of the baffle is rotatably supported in a space for moving the baffle. A discharge port for supplying cold air to the storage chamber is formed below the baffle, and a passage is formed to communicate the discharge port with the lower part of the space.

Furthermore, a bypass passage is formed to communicate the upper part of the space with the passage.

(E) Function According to the present invention, the cold air coming out of the cold air outlet collides with the baffle, is directed downward, and then passes through the passage to the lower discharge outlet, so the cold air circulates smoothly and the temperature is controlled. The responsiveness of the system also improves.

Furthermore, when the buckle is opened, a portion of the backflow cold air rising up the passage from the lower discharge port flows into the bypass passage.

(f) Embodiments Next, embodiments will be explained with reference to the drawings. Figure 1 is an enlarged vertical cross-sectional view of the refrigerator (1) in the baffle tank 22) part of the damper device 20), and Figure 2 is the same part of the refrigerator (1).
3 is a longitudinal sectional view of the refrigerator (1) including the baffle (21) for the refrigerator compartment, and FIG. 4 is a longitudinal sectional view of the refrigerator (1) including the refrigerator compartment (7) and the damper device (20) ) front view,
FIG. 5 shows a front view of the refrigerator compartment (8) of the damper device (20), and FIG. 6 shows an exploded perspective view of the damper cover (23). In Figures 2, 3 and 4 (1
) is a refrigerator consisting of an insulating box body (5) that opens toward the front by filling an insulating material (4) (for example, foamed polyurethane) between the outer box (2) and the inner box (3) using an in-situ foaming method. The interior of the refrigerator is divided into upper and lower parts by an insulating partition wall (6), with the upper part being a freezing room (7) and the lower part being a refrigerator room (8).A cooling room is constructed within the partition wall (6). A cooler (10) is housed in (9), and a suction type propeller blower (12) is installed on the back wall of the insulation box (5) facing the cooler (10). (13) is a duct for the freezer compartment that extends upward from the blower (12) and opens into the freezer compartment (7) at the Suita mouth (14).
From the part 2), a duct for the cold room (15) and a duct for the ice room (16) branch downward and extend in parallel, and the duct for the cold room (8) extends downward.
) Upper inner box 3) Back wall outlet (17), (18
) will be released respectively.

The damper device (20) is connected to the air outlet (17), (1
8), and is installed at an angle to the refrigerator compartment baffle (
21) is the air outlet (17), and the icehouse baffle (2
2) opens and closes the Suita exit (18) respectively. (24)
is connected to the lower end of the damper cover (23) and
) A refrigerating room passage (25) and an ice room passage (26) are formed by partitioning the inside with a duct member extending downward from the back wall.
) Upper end is damper cover (23) Lower end is discharge port (27)
, (2B), and the lower end of the refrigerator compartment passageway 25) is sealed.

The lower part of the refrigerator compartment (8) is partitioned by partition front members (30) and (31) and partition plates (32) and (33) installed behind them, respectively.
) An upwardly open container (34) is disposed between them, and the inside is used as an ice room (35), and an upwardly open container (36) is disposed below the partition plate (33), and the inside is used as a vegetable room (37). 〉
It is said that (38), (39), (40) and (41) are each room (7), (8).

It is a door corresponding to (35) and (37), and is a door corresponding to container (34).
) and (36) are attached to the back surfaces of the doors (40) and (41), respectively, and can be freely drawn out. (42) is the refrigerator compartment (8) in front of the damper cover (23).
) A container-shaped shelf installed at the top so that it can be freely drawn out, and two tiers of article storage shelves <43) and (44) are installed below it.

In Figure 1, Figure 5, and Figure 6, the icehouse duct (
16) is a blower (12) along with a duct for the refrigerator room (15).
The through hole (45) formed in the lower inner box (3) and each air outlet (
17) and (18) are configured in a duct member (46) attached to the back of the inner box (3). The damper device (20) was originally filed by the applicant in 1986.
Similar to the damper device described in No. 75556, a single motor (47) (driver) drives both the two baffles (21) and (22) with a phase difference. A motor (47) is attached to the upper part of the back side of a substrate (49) which has through holes (47) and (48) at the bottom to correspond to the air outlets (17) and (18), and a baffle (21) is attached to the front side. ) and (22) are installed in parallel. The baffles (21) and (22) are rotatably supported at their upper ends and have corresponding through holes (48) and (48).
It is driven by separate pins (50) moved by a motor (47), and a leaf spring (51),
(51) is always biased in the direction of closing the room. That is,
This is an inverted version of the damper device of the above application.

As shown in the exploded view in Figure 6, the damper cover (23) includes a front plate (52), a front insulation plate (53), a rear insulation plate (54) that matches the rear surface of the front insulation plate (53), and an auxiliary insulation material (55). ,
(56), and is arranged at the upper corner of the back wall of the refrigerator compartment (8), and the damper device (20) includes front and rear insulation plates (53).
) and (54). The front surface of the rear insulation board (54) is inclined with the upper part protruding forward and the lower part receding, and a damper device (54) is installed on this inclined surface.
20) is installed, thereby damping the damper device (20).
) is installed at an angle with the upper part facing forward and the lower part receding from the vertical direction. There is an air outlet (
Through holes (58) corresponding to (17), (18), (
58) is bored, and a through hole (48) of the damper device (20) is bored.
), (48) fit this.

Above the through holes (58) and (58), there is a housing section (59).
is formed to protrude rearward and accommodate the motor (47) therein. Since the inner box (3) corresponding to this storage part (59) is made to protrude toward the icehouse duct (16) to escape, the passage cross-sectional area of the duct (16) is narrowed. On the other hand, since there is a performance limit to reducing the thickness of the heat insulating material (4) between the duct member (46) and the outer box (5), there is also a limit to retracting the rear surface of the duct member (46). Since the damper device (20) is tilted, the rear surfaces of the motor (47) and the housing part (59) are also tilted, so that the upper end of the protruding part (60) of the inner box (3), that is, the blower (12) is tilted.
) side has a rear surface inclined so as to be farther away from the rear wall of the opposing duct member (46) than the lower end. Therefore, even though the protrusion (60) protrudes toward the duct (16), the cold air flowing down from above smoothly flows toward the Suita exit (18) along this slope.

In addition, if the defrosting water of the cooler (10) overflows from the cooling chamber (9), or if the moisture therein condenses on the inner surface of the duct (15) or 16 due to the entry of warm air, that water will drain into the duct. (15) or (16) flows down along the inner surface to the air outlet (17), (ts). ), the air outlet (17
), the motor (
47) will not be flooded with water, thus preventing failures such as freezing and shorting of the windings.

A baffle (21), (
22) Space for baffle movement corresponding to each (62
) and (63) are each formed independently by recesses, and the space (63) in which the icehouse baffle (22) is located.
A passage (66) is formed which communicates with the lower end, descends downward as indicated by the arrow in FIG. A passage (65) is formed which communicates with the discharge port (27) at the lower end, forming a trap and descending from the side.

The cold air cooled by the cooler (10) is sucked into the blower (12), is blown vertically, and is sent to the freezer compartment (7) through the freezer compartment duct (13) through the air outlet (14). It's blown out. The cold air flowing from the blower (12) into the refrigerator room duct (15) and the ice room duct (16) flows through each outlet (
17) and (18), respectively, through the through hole (5g), (58) and through hole (4g), (
4g) and flow into the spaces (62) and (63), respectively, and then flow into the passages (65) and (66), respectively.
).

Here, the baffles (21) and (22) are the air outlet (17).
), when (1g) is closed, the board (49)
, and is inclined with respect to the vertical direction, so that in the open state as shown in FIGS. 1 to 3, it is oriented approximately vertically downward. Therefore, the baffle (21) is parallel to or intersects at an acute angle with the flow direction of the cold air that is blown out from the outlet (17) and rises in the space (62), so the damper device (20) is arranged vertically. Compared to the case where the baffle (21) is blown out, the flow of cold air is not obstructed.In addition, the passage (
65), the front surface of the front insulation board (53) is provided with through holes (68) and (69) at the top and bottom, and further through holes (68).
a groove (70) rising from and then extending laterally;
A groove (71) extending laterally is formed from the through hole (69). The auxiliary insulation materials (55) and (56) are inserted into this groove (7).
0) and (71), with a passage <72) inside.

(73) and are fitted into the respective grooves (70) and (71) from the front as shown by the arrows in FIG. Auxiliary insulation material (55
), (56) Through holes on the front (68), (69)
Air outlet (75), (7
5) and (76) are falsely drilled. The front plate (52) has auxiliary insulation materials (55), (56) with grooves (70), (7
1) The front insulation material (53) has a shape that matches the front shape, covers the front surface of the front insulation material (53), and corresponds to the air outlets (75), (75), and (76). Through-holes (77>, (77>, (78>) are drilled therein. Air outlet (75).

The notch (42A) of the shelf (42) corresponds to the front of (75), and the shelf (43) corresponds to the front of the Suita mouth (76).

A portion of the cold air that flows into the passage (65) and descends through the through hole (6
8) Flows into the passages (72), (73) from (69), is blown out from the air outlets (75), (75), and flows concentrated into the shelf (42) from the notch (42A). , is sprayed from the air outlet rj (76) onto the shelf (43). As a result, the inside of 111 (42) is strongly cooled,
Although it is below freezing, it is maintained at a temperature at which foods such as raw meat do not freeze, that is, in the freezing temperate zone.

Here, the temperature of the cold air coming down from the cooler (10) is below -20'C, but in the process of rising from the space (62) and passing through the passages (65) and (72) or (73), The temperature will rise somewhat. Therefore, the difference in temperature between the cold air in the refrigerator compartment (8) and the cold air in the refrigerator compartment (8) is reduced, which prevents frost formation when colliding with the cold air in the refrigerator compartment (8), and also prevents overcooling of the shelves (42). . In addition, since the through holes <68) and (69) are located at the position where the passage (65) after the trap descends, the inside of the refrigerator compartment (8) that flows backward from the air outlet (75), (75), and (76) The cold air is passed through the hole (68), <69)
It does not rise from the ground and flows down the passage (65). Therefore, when the baffle (21) is closed, the relatively warm and humid refrigerator room (
8) Internal cold air does not flow into the space (62), so the baffle (21) does not freeze.

The remaining cold air flowing down the passageway (65) flows into the refrigerator compartment passageway (25) in the duct member (24) from the discharge port (27). FIG. 8 shows a plan sectional view of the duct member (24).

The duct member (24) is housed in a vertically extending recess (3A) formed on the back wall of the inner box (3), and is housed in the damper cover (3A).
23) and the partition plate (32), and the inside is partitioned left and right by a heat insulating material (80) having grooves on the rear surface to form a cold room duct (25) and an ice room duct (26). . Duct member (24) corresponding to the front of the passage (25)
> and the heat insulating material (80) are provided with air outlets (81) and (82) corresponding to the upper and lower sides of the shelf (44), and the cold air flowing down from above flows through the shelf (44) and the partition plate ( 32)
While the air is blown upward, it flows down the icehouse duct (16) and reaches the Suita mouth (18).
) The cold air flowing out from the outlet collides with the baffle (22), which is oriented approximately vertically downward, as shown in Figure 1, is directed downward, flows into the passageway (66), descends there, and is discharged from the discharge port (28). It flows into the icehouse passageway (26>) in the duct member (24) and descends.The lower end (26A) of this passageway (26) communicates with the rear end of the cold air passageway (83) formed inside the partition plate (32). Furthermore, an air outlet (84) corresponding to the upper part of the ice chamber (35) is formed on the lower surface of the cold air passage (83).Therefore, the cold air that has descended through the passage (26) flows through this cold air passage (83). It moves forward and flows down from the air outlet (84) above the ice room (35) to maintain the ice room (35) in the freezing temperate zone.The lower vegetable compartment (37) flows down from the ice room (35). Cold air flows in through the through holes (33A) of the partition plate (33), thereby cooling the container (36) from around it.

In this way, the cold air coming out of the Suita mouth (18) is smoothly guided downward, so that it is supplied to the ice chamber (35) below without stagnation. Therefore, a predetermined amount of cold air can be secured, and the ice greenhouse (3
5) can be cooled to a predetermined ice temperature zone.

Here, since the cold air from the Suita mouth (18) descends without stagnation, when the baffle (22) is closed, the temperature inside the ice room (35) or vegetable room (37) is relatively warm and humid. The high cold air flows backward through the icehouse passageway (26) and rises. When this flows into the space (63), the baffle (22
) is cooled by the cold air of 20°C or less in the duct (16), so the moisture in it flows into the baffle (22).
Freezing occurs in the surrounding area, causing malfunction of the baffle (22).

Therefore, in the present invention, a bypass passage (67) is formed on the side of the space (63) to communicate the passage (66) with the upper part of the space (63). A part of the cold air that has risen in the passageway (26) flows into the bypass passageway (67), and the moisture therein condenses in the bypass passageway (67), so that it directly flows into the space (63).
), the backflow cold air flowing into the baffle (22
) can be suppressed from freezing. In particular, the passage (66) slopes downward to the lower right in Fig. 5, and the bypass passage (67)
) is located in the ascending projection plane of the passageway (26), so that the inflow of the backflow cold air into the bypass passageway 67) is also promoted.

The motor (12M) and compressor (86) of the blower (12) are controlled based on the temperature of the freezer compartment (7) to cool the inside of the freezer compartment (7) to freezing temperature. Damper device 2
0), the motor (47) is controlled by a control device (not shown) based on the output of a sensor (not shown) that detects the temperature of the refrigerator room (8) and the ice room (35), respectively, and the baffle (21), ( 22) Both closed, baffle (21) open and baffle (22) closed, baffle (2
1), (22) both open, baffle (21) closed and baffle (22) open, the refrigerator compartment <8> is set to +
Refrigerate at a temperature of 5°C, or keep the ice room (35) at -2°C.
Maintain in ice temperate zone.

(G) Effects of the Invention According to the invention of claim 1, the cold air blown out from the cold air discharge port collides with the baffle of the damper device and is directed downward and directly passes through the passage toward the discharge port below.
Even when the storage chamber for supplying cold air is located below the damper device, the cold air flows smoothly and the responsiveness of temperature control is improved.

Furthermore, according to the second aspect of the invention, when the buckle is closed, a part of the backflow cold air rising up the passage from the lower discharge port flows into the bypass passage, so that the cold air flowing directly into the baffle movement space is reduced. However, the baffle is less likely to freeze, and the operation of the damper device can be maintained in good condition.

[Brief explanation of the drawing]

Figure 1 is an enlarged vertical cross-sectional view of the refrigerator of the baffle part for the ice room of the damper device, Figure 2 is a vertical cross-sectional view of the same part of the refrigerator,
Figure 3 is a longitudinal cross-sectional view of the refrigerator including the refrigerator baffle, Figure 4 is a front view of the refrigerator compartment and freezer compartment excluding the damper device, Figure 5 is a front view of the refrigerator compartment with the damper device part, and Figure 6 is a front view of the refrigerator compartment including the damper device. FIG. 7 is an exploded perspective view of the damper cover, FIG. 7 is an enlarged view of the main parts of the front heat insulating plate and the auxiliary heat insulating material, and FIG. 8 is a plan sectional view of the duct member. (16)... Duct for ice greenhouse, (18>... Air outlet, (20)... Damper device, (22)...
Baffle for ice room, (28)...Discharge port, (63)
...space, (66)...passage, (67)...bypass passage. Figure 12 Figure 3 Collection 5 Figure dark

Claims (1)

[Claims] 1. In a refrigerator equipped with a damper device equipped with a baffle for opening and closing a cold air outlet, the baffle has an upper portion rotatably supported in a space for moving the baffle, and is connected to a storage chamber. A refrigerator characterized in that a discharge port for supplying cold air is formed below the baffle, and a passage is formed that communicates the lower part of the space with the discharge port. 2. The refrigerator according to claim 1, further comprising a bypass passage that communicates the upper part of the space with the passage.