JPH0248789Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a refrigerator in which cooling inside the cooling chamber is controlled by displacing a damper plate provided in the cooling chamber in an opening/closing direction.

[Technical background of the invention] In recent years, this type of refrigerator has been equipped with a specification switching chamber, which is a cooling chamber independent from the freezer or refrigerator compartment, in the refrigerator body, and a damper is used to connect the cold air inlet formed on the wall of this specification switching chamber. There is a type that can be opened and closed by a plate, and the specification switching chamber can be selectively switched between a freezer specification and an ice chamber specification, which is maintained at a lower temperature than the refrigerator compartment. In this case, the cold air inlet of the specification switching chamber is generally provided on the rear wall of the specification switching chamber from the viewpoint of cooling, so an operating mechanism is required to operate the damper plate located at the rear of the specification switching chamber from the front. It has been considered to improve the operability of specification switching by providing this. This is, for example,
A cam plate that can be rotated laterally is provided at the front of the specification switching chamber, and an actuating rod is provided between the cam plate and the damper plate so as to be movable back and forth. By rotating the cam plate, the lateral displacement of the cam plate is converted into a longitudinal displacement of the actuating rod, which in turn presses the damper plate via the actuating rod to displace the damper plate in the opening/closing direction.

[Problems with the Background Art] This type of damper plate operating mechanism is constructed by combining a cam plate and an actuating rod, so it is unavoidable that some degree of assembly error will occur. However, in the above configuration, if an assembly error occurs, there is no means to absorb it at all, so it is not possible to accurately set the opening/closing degree of the damper plate, and the cooling temperature of the specification switching chamber eventually changes. The drawback was that variations were likely to occur.

[Purpose of the invention] The purpose of the invention is to make it possible to adjust the opening/closing degree of the damper plate with a simple configuration and easy operation, even if an assembly error occurs in the damper plate operating mechanism, and to maintain the appropriate cooling temperature in the cooling chamber. There is a refrigerator provided that can be maintained.

[Summary of the invention] The present invention provides a mounting portion that protrudes along a direction substantially perpendicular to the actuation rod on the damper plate side of the actuation rod, and can be fitted to the tip of this fitting portion by changing the mounting direction. A pusher having a mounting hole is removably provided, and when the mounting direction of the pusher is changed with respect to the mounting portion, the protruding length from the mounting portion to the contact position with respect to the damper plate is changed. By providing a damper abutting part, the structure is simple and the amount of pressure applied to the damper plate, as well as the degree of opening and closing, can be finely adjusted by the simple operation of changing the mounting position of the presser. It has the following characteristics.

[Embodiment of the invention] This will be explained with reference to FIGS. 1 to 8. As shown in Figure 2, which shows the overall configuration, the refrigerator main body 1
There are two heat insulating partition walls 2 and 3 inside, which are, from top to bottom, a freezer compartment 4, a specification switching compartment 5, and a refrigerator compartment 6.
are divided into sections. Freezer compartment 4 and specification switching compartment 5
The inside of the heat insulating partition wall 2 that partitions the heat insulating partition wall 2 is hollow with an open top surface, and a panel 7 is placed over the open top surface, thereby forming a cooler storage chamber 8 in the heat insulating partition wall 2. . Inside this cooler storage chamber 8, there is a main cooler 9 and a fan device 1 located behind it.
0 is set. The fan device 10 includes a fan motor 11 and a fan 12 driven by the fan motor 11, and blows cold air generated by the main cooler 9 to a cold air passage 13 at the rear of the cooler storage chamber 8. As shown in FIG. 3, the cold air passage 13 includes a first duct 14 extending from the rear of the fan device 10 along the rear wall of the refrigerator compartment main body 1 to the rear upper part of the specification switching chamber 5, and also a first duct 14 of the fan device 10. A second duct 15 extending from the rear along the rear wall to the rear upper part of the refrigerator compartment 6; and a third duct having a flat box shape extending from the rear of the fan device 10 to the rear upper part of the freezing compartment 4 along the rear wall. duct 16
It is composed of. Each of these ducts 14,1
5 and 16, the third duct 16 is the largest, the second duct 15 is the smallest, and the first duct 14
is set to be in between them. A first duct 1 is installed on the rear wall of the specification switching chamber 5.
A first cold air inlet 17 and a second cold air inlet 18 are formed which are connected to the fourth and second ducts 15 , and the inside of the specification switching chamber 5 is communicated with the cold air passage 13 .
In addition, a cold air inlet 19 for the freezer compartment connected to the third duct 16 is formed in the rear wall portion of the freezer compartment 4 over almost the entire width of the rear wall portion. A cold air inlet 20 for the refrigerator compartment is formed in a continuous manner at the lower end of the duct 15 . From the cold air passage 13 to the first cold air inlet 17 or the second cold air inlet 1
The cold air supplied into the specification switching chamber 5 through 8 is
After the food inside is cooled, it returns to the cooler storage chamber 8 through the cold air recirculation port 21 formed at the lower front edge of the heat insulating partition wall 2. From the cold air passage 13 to the third duct 1
The cold air supplied into the freezer compartment 4 through the freezer compartment 6 blows out from the freezer compartment cold air inlet 19, flows into the freezer compartment 4 through the grill 22, cools the food inside, and then cools the food in front of the panel 7. The cold air returns to the cooler storage chamber 8 through the cold air recirculation port 23 provided at the edge. On the other hand, the cold air supplied into the refrigerator compartment 6 from the second duct 15 through the cold air inlet 20 for the refrigerator compartment cools the food inside, and then flows from the front end of the heat insulating partition wall 3 to the left side wall of the refrigerator body 1. The cold air returns to the cooler storage chamber 8 through a cold air return duct 24 formed within the front end of the heat insulating partition wall 2. A plate-shaped direct cooling cooler 25 is provided in the upper part of the freezer compartment 4 below the grill 22 in the form of a shelf.

Now, as shown in FIG. 1, a first damper device 26 is provided at the first cold air inlet 17 located on the rear wall of the specification switching chamber 5. As shown in FIG. This first damper device 26, as shown in detail in FIG.
A damper plate 28 is rotatably pivoted to one side of the square tube 27, and the damper plate 28 and the square tube 2
A tension spring 29 is provided between the damper plate 28 and the hook portion 27a protruding from the damper plate 7, and constantly biases the damper plate 28 in the closing direction. A sealing material 30 is attached to the outer surface of the damper plate 28 to improve the sealing performance when the damper plate 28 is closed, and a damper heater 31 for preventing freezing is fixed in a wound state around the outer periphery of the square tube 27. has been done. An operating lever 32 is integrally provided upwardly projecting on the damper plate 28 of the first damper device 26, and by pressing the upper part of the operating lever 32 backward, the damper plate 28 can be rotated to open. ing. In FIG. 7, reference numeral 33 indicates an operating mechanism for pressing the operating lever 32 to open the first damper device 26, which will be described below. Reference numeral 34 denotes the operating section cover attached to the front of the ceiling of the specification switching room 5, and 35 indicates the operating section cover 3.
a support plate connected to extend rearward to 4;
36 is an actuation rod. A pair of guide protrusions 37 are provided on the upper surface of the support plate 35 so as to be spaced apart from each other in the front and rear, and a pair of elongated holes 38 are formed in the actuation rod 36 so as to extend back and forth. And the actuating rod 3
6 is supported on the support plate 35 by fitting the elongated hole 38 into the guide protrusion 37 so as to be movable back and forth.
A rotary switch 39 is fixed on the upper surface of the operating section cover 34 at the approximate center thereof with an operating shaft 39a facing downward, and a cam plate 40 is fitted to the operating shaft 39a so that it rotates in the lateral direction integrally with the operating shaft 39a. It is made to be. An operation piece 42 is integrally formed at the front end of the cam plate 40 and projects downward through a slit 41 formed in the operation section cover 34, and a knob 43 is fixed to the lower end of the operation piece 42. . The operating piece 42 of the cam plate 40 is elastically deformable back and forth and is always in elastic contact with the front end of the slit 41, thereby holding the operating piece 42 and, by extension, the cam plate 40 at a predetermined rotational position. For this purpose, engaging recesses 41a, 41b and 41c are formed in the front end of the slit 41 at three locations on both left and right sides and in the center. On the other hand, a substantially arcuate cam groove 44 is formed at the rear of the cam plate 40 . The cam groove 44 is connected to the operating shaft 39a of the rotary switch 39.
A first cam surface 44a formed along an arc having a predetermined radius from It is constructed in series. Reference numeral 45 denotes an engaging protrusion provided at the tip of the actuating rod 36, which is inserted into the cam groove 44 of the cam plate 40, so that when the cam plate 40 is rotated laterally, the first and second protrusions are inserted. The actuating rod 36 is moved in the front and back direction via the engagement protrusion 45 by the two cam surfaces 44a and 44b. Reference numeral 46 denotes a mounting part made of stainless steel, for example, which is approximately L-shaped, and its base is fixed to the rear end of the actuating rod 36 with a speed nut 47, and its tip is attached to the right at a right angle from the actuating rod 36. It extends in the direction and is located near the upper end of the actuating lever 32 of the damper plate 28. Reference numeral 48 denotes a flat presser, which has a mounting hole 48a for fitting into the mounting portion 46 at a position eccentric from the center, and two damper contact portions 48b and 48c sandwiching the mounting hole 48a. ing. For example, when the mounting hole 48a is inserted into the tip of the mounting portion 46 as shown in FIGS. 6 to 8, the contact portion 48b
is in contact with the actuating rod 36 of the damper plate 28. Therefore, the amount of protrusion d ₁ of the contact part 48b from the mounting part 46 toward the damper plate 28 in the mounted state shown in FIG. It is larger than the protrusion amount d ₂ at that time.

Next, 49 shown in FIG.
A second damper device provided at the cold air inlet 18 of
This has a damper plate (not shown) inside the case 50, and the amount of cold air passing through from the second cold air inlet 18 is adjusted by changing the opening degree of the damper plate. The damper plate has a well-known structure in which the degree of opening is changed by the expansion and contraction of a gas-filled bellows (not shown), and a heat-sensitive tube 51, which is a heat-sensitive portion, is hermetically connected to the bellows. The tip of the heat-sensitive tube 51 is located within the specification switching chamber 5 so that it can sense the air temperature in the specification switching chamber 5, and when the temperature sensed by the heat-sensitive tube 51 is higher than the operating temperature, the bellows is expanded. By moving the damper plate in the opening direction, cold air is allowed to flow into the specification switching chamber 5 from the second cold air inlet 18. When the temperature is below the operating temperature, the damper plate is moved in the closing direction to allow cold air to flow into the specification switching chamber 5. Suppress or block inflow. The operating temperature of the second damper device 49 is set in advance so that the temperature inside the specification switching chamber 5 is maintained at, for example, about 3° C. to 4° C., that is, the inside of the specification switching chamber 5 is set to a refrigerator room specification. ing. Note that this operating temperature is
The temperature can be changed within a predetermined range by rotating a temperature adjustment knob 52 provided on the front surface of the case 50 of the damper device 49. Also,
Although not shown, the heat-sensitive tube 51 is attached with a heat-sensitive tube heater whose energization path is closed by the rotary switch 39 when the knob 43 is set to the "chilled" position, and the heat-sensitive tube heater is energized. This allows the heat-sensitive tube 51 to be forcibly heated.

Next, the operation of this embodiment will be described.

(a) In the case of a freezer compartment specification In this case, move the knob 43 located on the front of the operation section cover 34 to the "Freezing" display position. As a result, the cam plate 40 of the operating mechanism 33 rotates in the direction of arrow A from the state shown in FIG. I was pushed backwards,
Accordingly, the actuating rod 36 is moved rearward.
This allows the mounting portion 46 provided on the actuating rod 36 to
The contact portion 48b of the presser 48 attached to the first
The operating lever 3 of the damper plate 28 of the damper device 26 of
2 is pressed against the elastic force of the tension spring 29 to open the damper plate 28. Therefore, a large amount of cold air continuously flows into the specification switching chamber 5 from the first duct 14 having a relatively large flow path cross-sectional area, and the inside of the specification switching chamber 5 is approximately the same as the inside of the freezing compartment 4. Maintained at low temperature.

By the way, when the specification switching chamber 5 is set to the freezer specification, the degree of opening of the damper plate 28 of the first damper device 26 may become larger than the set value due to an assembly error of the operating mechanism 33. When this happens,
When the specification switching chamber 5 is set to the refrigerator compartment specification described later, the damper plate 28 does not become fully closed and the specification switching chamber 5
Even though the refrigerator compartment specifications are set, the problem arises that the internal cooling temperature drops excessively. If such an assembly error is discovered after assembly, the mounting position of the presser 48 provided on the mounting portion 46 of the operating rod 36 of the operating mechanism 33 is changed. That is, if the damper plate 28 is installed upside down so that the contact portion 48c contacts the actuation lever 32 of the damper plate 28, contrary to the state shown in FIG. Since the amount of protrusion is reduced, when the knob 43 is set to the "freezing" position, the damper plate 28 will be opened to an appropriate degree, and when the specification switching chamber 5 is set to the refrigerator specification, the damper plate 28 can be fully closed. .

(b) In the case of a refrigerated room specification In this case, move the knob 43 to the "refrigerated" display position. As a result, the engaging protrusion 45 of the actuating rod 36 is located on the right end side of the cam groove 44 of the cam plate 40, and the operating shaft 3 of the rotary switch 39
First cam surface 44a having a small radial distance from 9a
The first damper device 26
When the damper plate 28 is pulled and closed by the tension spring 29, the actuating rod 36 returns to the forward position. When the first damper device 26 is closed in this manner, the cold air in the cold air passage 13 is not supplied from the first cold air inlet 17 having a relatively large flow passage cross-sectional area, and the second damper device 50 is provided. The second duct 15 can be supplied through the second duct 15 with the smallest flow path cross-sectional area. Since the operating temperature of the second damper device 49 is set to maintain the temperature inside the specification switching chamber 5 at the same temperature as the refrigerator compartment 6, the temperature inside the specification switching chamber 5 is higher than the temperature inside the refrigerator compartment 6. When the temperature rises, the damper plate is moved in the opening direction to allow cold air to flow into the specification switching chamber 5, and when the specification switching chamber 5 is cooled to below the temperature in the refrigerator compartment 6, the damper plate is moved in the closing direction. to suppress or block the inflow of cold air. With this, specification switching room 5
The inside has a refrigerator compartment.

(c) In the case of chilled room specifications In this case, move the knob 43 to the "chilled" display position. The cam plate 40 rotates with this operation, but as shown in FIG.
Since the engaging protrusion 45 is located approximately at the center of the cam groove 44 and maintains contact with the first cam surface 44a, the actuating rod 36 does not move, and therefore the first damper device 26 is closed. maintain the condition. However, since the rotary switch 39 is switched by the rotation of the cam plate 40, the heat-sensitive tube heater of the second damper device 49 is energized, and the heat-sensitive tube 51 is forcibly heated. As a result, even if the temperature inside the specification switching chamber 5 is lower than the temperature specified for the refrigerator compartment, the heat-sensitive tube 51 senses the high temperature due to the heat from the heat-sensitive tube heater, and accordingly, the damper plate of the second damper device 49 is set to the specification for the refrigerator compartment. It tends to open more than in the case of , and more cold air is introduced into the specification switching chamber 5 . That is, the second damper device 49
This means that the operating temperature is substantially lowered, and as a result, the interior of the specification switching chamber 5 is maintained at a temperature lower than the refrigerator specification, for example, about -2° C. to 2° C., and becomes the chilled room specification.

As described above, according to the present embodiment, the damper plate 28 of the first damper device 26 for switching the specification switching chamber 5 between the freezer compartment specification, the refrigerator compartment specification, or the chilled room specification is replaced with the damper plate 28 of the first damper device 26 of the specification switching chamber 5. By moving the knob 43 of the cam plate 40 provided at the front part in the lateral direction, it can be displaced in the opening/closing direction via the operating mechanism 33, so that the specification switching operation can be performed at the front part of the specification switching chamber 5. This makes it extremely easy to operate. Moreover, the operating mechanism 3 configured by combining the cam plate 40, the actuating rod 36, etc.
3 to open and close the damper plate 28, there may be variations in the amount of movement of the actuating rod 36 when the actuating rod 36 is pushed backward due to assembly errors, but in this embodiment, the specification switching chamber As described in the section of the explanation of the operation when making the presser 48 into a freezer compartment specification, by changing the attachment position of the presser 48 to the mounting portion 46, the damper plate 2 of the presser 48 can be
Since the amount of protrusion of the damper plate 8 toward the operating lever 32 side can be changed, the degree of opening and closing of the damper plate 28 can be finely adjusted based on this, and the specification switching chamber 5 can be set at an appropriate cooling temperature.

In the above embodiment, the pusher 48 has a flat shape with the mounting hole 48a located at a position eccentric from the center, and the damper contact portion 48b,
Although the amount of protrusion of 48c is made to be different in two types, d ₁ and d ₂ , the present invention is not limited to this.
As shown in the figure, a cross-shaped mounting hole 53a is also formed in a presser element 53 having a substantially cross-shaped cross section, and damper abutting portions 53b and 53e having different protruding lengths from the mounting hole 53a are provided for this mounting. Hole 53
A may be attached to the attachment portion 46 of the actuating rod 36 so that four types of attachment manners can be selected. Even in this case, the mounting hole 53a of the presser 53
are provided at eccentric positions on opposite sides of the presser 53. Furthermore, as shown in FIG. 10, a cylindrical presser 54 having a star-shaped mounting hole 54a at an eccentric position from the center position and a damper contacting part 54b on the outer periphery is attached to the mounting part 46 in eight ways. It may be possible to attach it in an attachment manner. Further, in the above embodiment, the operation mechanism 33 is applied to open and close the damper plate 28 of the first damper device provided in the specification switching chamber 5, but the present invention is not limited to this. The present invention can be widely applied to refrigerators in which a damper plate provided at a cold air inlet through which cold air flows is moved in the opening/closing direction.

[Effects of the invention] As described above, the present invention removably provides a pusher having a mounting hole that can be fitted by changing the mounting direction at the tip of the mounting portion provided on the actuating rod, and The damper plate is pressed by the actuating rod by providing a damper abutting part on the child whose protruding length from the attaching part to the contact position with respect to the damper plate changes when the mounting direction is changed with respect to the mounting part. Since the amount can be finely adjusted, even if there is an assembly error in the damper plate operating mechanism, it is possible to absorb the error and adjust the opening/closing degree of the damper plate and the cooling temperature of the cooling chamber with a simple configuration and easy operation. This has an excellent effect in that it can be set appropriately.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention,
Figure 1 is a partially cutaway perspective view of the specification switching chamber;
Figure 2 is a longitudinal sectional view of the entire structure, Figure 3 is a perspective view from the back showing the cold air passage, Figure 4 is a perspective view from the front, Figure 5 is a front view of the specification switching chamber, and Figure 5 is a front view of the specification switching chamber. 6 is a longitudinal sectional view of the first damper device, FIG. 7 is a plan view of the operating mechanism, FIG. 8 is an enlarged perspective view of the rear part of the operating mechanism, and FIGS. 9 and 10 are other embodiments of the present invention. FIG. In the drawing, 4 is a freezing room, 5 is a specification switching room (cooling room), 6 is a refrigerator room, 9 is a main cooler, 10 is a fan device, 13 is a cold air passage, 25 is a direct cooling cooler, 2
6 is a first damper device, 28 is a damper plate, 33 is an operating mechanism, 36 is an operating rod, 41 is a rotary switch, 44 is a cam groove, 46 is a mounting portion, 48,
53, 54 are pushers, 48a, 53a, 54a are mounting holes, 48b and 48c, 53b to 53e,
54b is a damper contact portion.

Claims (1)

[Scope of utility model registration request] A damper plate is installed at the cold air inlet facing into the cooling room.
The damper plate is provided with an operation mechanism for displacing the damper plate in the opening/closing direction by pressing the damper plate through the actuating rod, and the damper plate has a mounting portion protruding from the damper plate side of the actuating rod along a direction substantially perpendicular to the actuating rod. , a pusher having a mounting hole that is removably provided at the tip of the mounting portion and can be fitted by changing the mounting direction; and a pusher that is provided on the pusher and whose mounting direction can be changed with respect to the mounting portion. A refrigerator comprising a damper abutting part whose protruding length from the attachment part to the abutting position with respect to the damper plate is changed at times.