TWI400416B - Cooling library - Google Patents

Description

Cooling library

The present invention relates to a cooling store for cooling stored articles by means of a cooling means provided inside.

Conventionally, in such a cooling store, since the air inside the storage compartment is cooled, the air pressure inside the storage compartment becomes lower than the external atmospheric pressure, and the operation of opening the heat insulating door is difficult.

As a means for solving this problem, the following members are disposed in a low temperature storage chamber, and the heat insulation box has a storage chamber that is closed by opening and closing with an insulated door; the door opening and closing device is provided to the heat insulating door and the heat insulating box. Rotating and operating the opening and closing of the heat insulating door; the adjusting port is disposed on the heat insulating door and communicating the outside with the storage room; and the pressure adjusting cover is interlocked with the rotating operation of the door opening and closing device, and opens and closes the adjusting port, And even if the low temperature system is cooled, the opening and closing of the heat insulating door can be operated with a small operating force.

[Patent Document 1] Special Kaiping 4-28989

However, in the low temperature storage of this configuration, although the rotation operation of the door opening and closing device is interlocked, and the pressure adjustment cover for opening and closing the adjustment port can be opened, the inside of the storage compartment is used immediately before the rotation operation of the door opening and closing device. Since the air pressure is still lower than the external atmospheric pressure, there is a problem that a large operating force is required at the initial operation of the turning operation of the door opening and closing device. The present invention has been made in order to solve such a problem, and an object thereof is to provide a cooling store in which a start operation of a turning operation of a door opening and closing device is performed in a cooling store that cools a stored article by a cooling means provided inside. When a large operating force is not required, the turning operation can be performed, and the opening and closing of the heat insulating door can be operated with a small operating force.

In order to achieve the above object, the invention of claim 1 is a cooling storage provided with a heat insulating box that closes an opening provided in the storage compartment by a heat insulating door; the door opening device assists the partition The hot opening method and the air pressure adjusting means operate according to the pressure difference between the outside of the heat insulating box and the inside of the heat insulating box, and the cooling air tank is characterized in that: the air pressure adjusting means is provided with: a gas pressure adjusting passage, a system and heat insulation The outside of the box communicates with the inside of the heat insulating box; and the check valve is disposed in the air pressure adjusting passage and controls the circulation of the air, and the check valve is disposed closer to the outside of the heat insulating box than the inside of the heat insulating box.

Further, the invention of claim 2 is characterized in that, in the invention of claim 1, the check valve is a plastic check valve which corresponds to the weight of the valve body itself of the check valve and This pressure difference operates.

The invention of claim 3, characterized in that in the invention of claim 1 or 2, the outer side opening of the air pressure adjusting passage is formed on the outer surface of the heat insulating box, and the outer side opening is formed It is lower than the check valve disposed in the air pressure adjusting passage.

According to a fourth aspect of the invention, in the third aspect of the invention, the air pressure adjusting passage extends substantially in a vertical direction from the outer side opening to the check valve installation portion.

The invention of claim 5, wherein in the invention of claim 3 or 4, a concave portion is formed on a front side of the outer side of the heat insulating box, and the outer side is formed on a top surface of the concave portion Opening.

The invention of claim 6 is characterized in that, in the invention of any one of claims 1 to 5, the air pressure adjusting means is provided in the heat insulating door.

The invention of claim 7 is characterized in that, in the invention of any one of claims 1 to 6, the inner side opening of the air pressure adjusting passage is formed on the inner surface of the heat insulating box, and the inside is The side opening is formed at a lower position than the check valve provided in the air pressure adjusting passage.

According to the invention of claim 1 of the patent application, since the pressure difference between the inside and the outside of the heat insulating box is controlled by the air pressure adjusting means that operates in accordance with the pressure difference between the outside of the heat insulating box and the inside of the heat insulating box, the opening and closing of the heat insulating door is often It is easy, and since the check valve provided in the air pressure adjusting passage is disposed closer to the outside of the heat insulating box than the inside of the heat insulating box, it is difficult to have a low temperature check valve even if the inside of the heat insulating box becomes frozen. There is an advantage that freezing occurs, and the air pressure adjusting means acts even in a low temperature state.

Further, according to the invention of claim 2, since the check valve is made of a plastic which is light in weight and operates in accordance with the weight of the valve body of the check valve and the pressure difference, there is even a check valve. The pressure difference between the outside of the heat box and the inside of the heat insulating box is a slight pressure difference, and the advantage of opening and closing the valve body of the return valve can be surely performed.

Further, according to the invention of claim 3, since the outer side opening formed on the outer surface of the heat insulating box is formed at a lower position than the check valve provided in the air pressure adjusting passage, even if the cooling chamber is provided It is installed in a dusty environment, dust, etc., and it is difficult to stay in the check valve, and the air pressure adjusting means does have an advantage.

According to the invention of the fourth aspect of the invention, since the air pressure adjusting passage extends substantially from the outside to the check valve installation portion in the vertical direction, even if the cooling chamber is installed in a dusty environment or the like, More reliably, dust and the like are left in the check valve, and the air pressure adjusting means does have an advantage.

According to the invention of the fifth aspect of the invention, since the recessed portion is formed on the outer surface of the heat insulating box, and the outer side opening is formed on the top surface of the recessed portion, dust or the like is hard to enter through the outer side opening. The check valve is provided, and the air pressure adjusting means is surely acted, and in the case where one of the door opening means is provided in the recess, the installation of the air pressure adjusting passage is easy.

Moreover, according to the invention of claim 6 of the patent application, since the air pressure adjusting means is provided in the heat insulating door, the installation of the air pressure adjusting passage is more advantageous.

Further, according to the invention of claim 7 of the invention, since the inner side opening formed on the inner surface of the heat insulating box is formed at a lower position than the check valve provided in the air pressure adjusting passage, the heat insulating box is used. Dust or the like on the inner surface side is also difficult to stay in the check valve, and there is an advantage that the air pressure adjusting means surely acts.

Next, an embodiment of the present invention in the drawings will be described. 1 is a perspective view showing a cooling gallery, FIG. 2 is a longitudinal sectional view showing a cooling gallery, FIG. 3 is a longitudinal sectional view showing the embodiment, and FIG. 4 is a longitudinal sectional detail drawing of the present embodiment. Figure 5 is a longitudinal cross-sectional view showing another embodiment.

The cooling store 1 is composed of a heat insulating box 3 provided with a wheel 2 for movement at the bottom, and the heat insulating box 3 is provided with a storage compartment 4 for storing articles therein, and a heat insulating door 5 to be installed The opening of the storage compartment 4 is closed; and the animal cooling compartment 6 is disposed below the storage compartment 4. The heat insulating door 5 is provided with a door opening device 7 for assisting the opening of the heat insulating door 5, and the door opening device 7 is provided with a shaft member 8 which is formed in the longitudinal direction of the heat insulating door 5; Formed on the upper and lower sides of the shaft member 8; the lever handle 9 is formed in the middle of the shaft member 8; and the lever upper lock member 10 restricts the operation of the lever handle 9, which is formed by rotating the lever handle 9 to be formed on the shaft member 8 A pair of upper and lower levers are provided to assist in opening the heat insulating door 5.

Here, the shaft member 8 of the door opening device 7 is attached to the shaft member 8 in the door thickness of the heat insulating door 5 so as to prevent the shaft member 8 from protruding from the outer side vertical surface 11 of the heat insulating door 5. The lever handle 9 and the lever upper lock member 10 for operating the limit lever handle 9 are also configured so as to be formed on the outer side vertical surface 11 of the heat insulating door 5 in the longitudinal section. A concave recess 13 is provided, and the lever handle 9 and the lever upper lock 10 are disposed on the recess bottom surface 14 of the recess 13.

Further, the storage chamber 4 and the cold storage chamber 6 are partitioned by the partition plate 16, and the storage chamber 4 and the cold storage chamber 6 are communicated via the inner tube 17, and the in-compartment fan motor 18 is disposed in the upper portion of the inner tube 17. In the cold storage chamber 6, on the opposite side of the connection portion 25 of the cold storage chamber 6 and the inner tube 17, the suction port 19 is provided to communicate with the storage chamber 4, and a cool storage agent 20 is disposed between the connection portion 25 and the suction port 19, and The cooling device 20 and the cooling device 21 of the storage chamber 4 are cooled.

Further, the machine room 22 provided in the upper portion of the heat insulating box 3 is provided with a compressor 23, a condenser 24, and the like which are known means for supplying cold heat to the cooling device 21. Further, in the present embodiment, although the machine room 22 is provided above the heat insulating box 3, it may be disposed adjacent to the cold storage chamber 6. When the in-chamber fan motor 18 is driven by these members, the air in the storage chamber 4 flows into the regenerator 6 through the suction port 19, and the cold air cooled by the refrigerating agent 20 or the cooling device 21 in the regenerator 6 is utilized by the in-compartment fan motor. 18 passes through the inner tube 17 and flows into the storage chamber 4, thereby cooling the storage chamber 4 to a predetermined temperature.

In the heat insulating door 5, in order to control the pressure difference between the outside of the heat insulating box 27 and the inside of the heat insulating box 28, a gas pressure adjusting means 29 including a gas pressure adjusting passage 30 and a check valve 31 is provided. The air pressure adjusting passage 30 penetrates the heat insulating door 5 and communicates with the heat insulating box outer portion 27 and the heat insulating box inner portion 28, and the concave top surface 15 of the concave portion 13 formed on the outer side vertical surface 11 of the heat insulating door 5 forms the outer side opening 32, and An inner side opening 33 is formed on the inner side vertical surface 12 of the heat insulating door 5. Further, the air pressure adjusting passage 30 has a substantially L shape including the curved passage portion 49 at a position closer to the outer side opening 32 than the inner side opening 33, and the air pressure adjusting passage is formed substantially from the outer side opening 32 to the curved passage portion 49. The straight line shape in the vertical direction is formed in a substantially horizontal straight line shape from the inner side opening 33 to the curved passage portion 49. Further, although the air pressure adjusting passage is formed in a substantially vertical straight line shape from the outer side opening 32 to the curved passage portion 49, it may be a gentle curved shape.

Here, in the present embodiment, the outer surface of the heat insulating door 5 or the concave top surface 15 of the concave portion 13 formed on the outer side vertical surface 11 is referred to as the outer surface of the heat insulating box. 34. A surface that contacts the inner space of the heat insulating box 3 like the inner side vertical surface 12 of the heat insulating door 5 is referred to as a heat insulating box inner surface 35. The cross section perpendicular to the passage direction of the air pressure adjusting passage 30 is circular, and the air flows from the outside of the heat insulating box (hereinafter referred to as the upstream side) to the inside of the heat insulating box (hereinafter referred to as the downstream side).

The air pressure adjusting passage 30 allows air to flow from the upstream side to the downstream side from the outer side opening 32 to the curved passage portion 49, but has a check valve 31 for preventing a known means of circulating in the opposite direction. The check valve 31 is composed of the following members, and the valve body 36 is movable by a balance between a pressure difference between the downstream side and the upstream side (hereinafter referred to as an internal/external pressure difference) and its own weight; and an opening and closing path 37 is used. The passage is opened and closed by the movable movement of the valve body 36. The valve body 36 is formed of the following members, and the valve portion 38 is formed by a cylindrical portion 39 on the downstream side and a conical portion 41 on the upstream side with the tapered surface 40 facing the upstream side; and the guide pin 42 is suspended from the cylinder The downstream side of the portion 39 is configured to allow the valve body 36 to smoothly move. Further, the opening and closing path 37 is provided with a large diameter passage portion 43 which is located on the downstream side and has a larger diameter than the cylindrical portion 39 of the valve portion 38. The small diameter passage portion 44 is located on the upstream side and has a smaller diameter than the cylindrical portion 39; the tapered valve body portion 45 is located between the large diameter passage portion 43 and the small diameter passage portion 44 and is in contact with the tapered surface 40 of the conical portion 41; The guide bearing portion 46 is fixed to the large-diameter passage portion 43 and inserted into the guide pin 42. When there is no internal/external pressure difference, the tapered surface 40 of the valve portion 38 and the valve body receiving portion 45 of the opening and closing path 37 are in contact with each other. In the state, the valve body 36 is located in the opening and closing path 37. Further, a hole common to the air flow is drilled in the guide bearing portion 46, so that even if the inside of the heat insulating box 28 is cooled, an internal and external pressure difference is generated due to a pressure drop, and the valve body 36 moves toward the downstream direction, and downstream of the cylindrical portion 39. When the side is in contact with the guide holder 46, air also flows.

The material of the valve body 36 is plastic to make the weight of the valve body 36 light. The check valve 31 is in a state where the weight of the valve body 36 itself is larger than the pressure difference between the inside and the outside, that is, in a state where the inside of the heat insulating box 28 has not been sufficiently cooled, the valve body 36 is located below because the tapered surface 40 and the valve body portion 45 contact, and the open circuit 37 is closed, and the air does not circulate. On the other hand, the inside of the heat insulating box 28 has been cooled to generate an internal and external pressure difference, and the internal and external pressure difference is larger than the weight of the valve body 36, and the valve body 36 is moved in the downstream direction because the tapered surface 40 and the valve body portion 45 is separated, and the opening and closing path 37 is opened, and air flows from the outside of the heat insulating box 27 to the inside of the heat insulating box 28, and the pressure difference between the inside and the outside disappears. Further, in the present embodiment, although the check valve 31 has the configuration as described above, for example, even if it has other shapes such as a spherical shape, the balance of the valve body 36 itself and the pressure difference between the inside and the outside is utilized, and the air pressure is made. The air in the passage 30 is adjusted to flow toward the inside of the heat-insulating box 28, and the structure for preventing the flow toward the outside of the heat-insulating box 27 is possible.

The structure in which the airflow of the air pressure adjusting passage 30 is controlled by the balance between the dead weight of the valve body 36 made of a lightweight synthetic resin and the pressure difference between the inside and the outside is used, and the valve body 36 is surely operated even when the internal and external pressure difference is small. The pressure inside the heat shield box 28 can be prevented from being lowered. Further, since the check valve 31 provided in the air pressure adjusting passage 30 is located closer to the heat insulating box outer portion 27 than the heat insulating box inner portion 28, it is less likely to be affected by the low temperature of the heat insulating box inner portion 28. Therefore, even if the inside of the heat insulating box 28 is below the freezing point, since the check valve 31 is hardly frozen by frost or the like, the check valve 31 is surely operated, and the pressure inside the heat insulating box 28 can be prevented from being lowered.

Further, the position of the air pressure adjusting passage 30 from the outer side opening 32 to the position where the check valve 31 is provided is at least substantially linear in the vertical direction, because the outer side opening 32 is located at a position lower than the position at which the check valve 31 is provided, It is difficult for the dust of the outside air to enter the air pressure adjusting passage through the external opening 32, and the operation of the check valve 31 is not hindered, so that the inside of the heat insulating box can be prevented, compared with the linear shape which is provided in the substantially horizontal direction. The pressure is reduced. Further, since the outer side opening 32 is formed in the concave top surface 15 of the recess 13 for constituting the lever opening 9 of the door opening device 7 and the lever upper member 10, the recessed top surface 15 is not visible from the front surface. The outer side opening 32 is excellent in appearance, and it is easy to mount the hole of the heat insulating door 5 of the air pressure adjusting passage 30 substantially vertically.

Further, in the present embodiment, the configuration in which the air flow of the air pressure adjusting passage 30 is controlled by the balance between the dead weight of the valve body 36 and the pressure difference between the inside and the outside is employed, but the internal and external pressure difference becomes large because the inside of the heat insulating box 28 becomes supercooled. In the case of the cooling chamber 1, the valve body 36 may be operated by the elastic force of the elastic body such as a spring and the balance of the internal and external pressure differences, or the valve body 36 itself may have the material of the elastic body, and the elastic force of the valve body 36 itself may be utilized. The structure in which the valve body 36 operates in balance with the pressure difference between the inside and the outside.

Fig. 5 shows another embodiment. Further, in the present embodiment, a common name and symbol are used for the configuration common to the above-described embodiments. The air pressure adjusting passage 30 penetrates the heat insulating door 5 and communicates with the heat insulating box outer portion 27 and the heat insulating box inner portion 28, and the outer side vertical surface 11 forms an outer side opening 47 on the outer side of the heat insulating door 5, and the inner side vertical surface 12 of the heat insulating door 5 An inner side opening 48 is formed. Further, the air pressure adjusting passage 30 is provided substantially in the middle of the outer side opening 47 and the inner side opening 48, and has a substantially L shape in which the curved passage portion 49 is located above the outer side opening 47 and the inner side opening 48, and the air pressure adjusting passage is provided. The outer side opening 47 to the curved passage portion 49 is inclined in a straight line shape of approximately 30 degrees, and the air pressure adjusting passage is inclined in a straight line shape of approximately 30 degrees from the inner side opening 48 to the curved passage portion 49. The check valve 31 is provided between the outer side opening 47 and the curved passage portion 49 of the air pressure adjusting passage. Further, since the configuration of the check valve 31 is the same as that of the previous embodiment, the description is omitted.

According to the present embodiment, the outer side opening 47 is formed on the outer side vertical surface 11 of the heat insulating door 5 where the heat insulating door 5 is not formed with the recessed portion 5, or the other side of the heat insulating box 3 is not in the heat insulating door 5. In the case where the outer case opening 34 is formed in the outer case opening 34, the linear shape of the substantially vertical direction cannot be formed from the outer side opening 47 to the curved passage portion 49, and the outer side opening 47 and the inner side opening 48 are formed in the outer side opening 47. Since it is lower than the curved passage portion 49, dust or the like in the outside air or the heat insulating box interior 28 is hard to enter through the external side opening 47 or the internal side opening 48, and the operation of the check valve 31 is not hindered, so It is indeed prevented that the pressure inside the heat shield box 28 is lowered. In the present embodiment, the air pressure adjusting passage is inclined in a straight line shape of approximately 30 degrees from the two openings 47 and 48 to the curved passage portion 49. However, other angles may be used as long as the angle at which the check valve 31 is operated is set. Further, although the check valve 31 is provided in the air pressure adjusting passage 30, the check valve 31 may be attached to the heat insulating box outer surface 34 so that the opening and closing path 37 of the check valve 31 communicates with the air pressure adjusting passage 30.

3. . . Thermal insulation box

4. . . Storage room

5. . . Heat insulation door

7. . . Door opening device

27. . . External heat shield

28. . . Insulation box interior

29. . . Air pressure adjustment

30. . . Air pressure adjustment path

31. . . Check valve

Figure 1 is a perspective view of a cooling library.

Figure 2 is a longitudinal section of the cooling gallery.

Figure 3 is a longitudinal sectional view of the air pressure adjusting means of the heat insulating door.

Figure 4 is a longitudinal section detail view of the check valve.

Fig. 5 is a longitudinal sectional view showing the air pressure adjusting means of the other embodiment.

5. . . Popular

11. . . External side vertical surface

12. . . Internal side vertical plane

13. . . Concave

14. . . Concave bottom

15. . . Top surface of the recess

27. . . External heat shield

28. . . Insulation box interior

29. . . Air pressure adjustment

30. . . Air pressure adjustment path

31. . . Check valve

32. . . External side opening

33. . . Internal side opening

49. . . Curved passage

Claims (9)

A cooling storage provided with: a heat insulating box that closes an opening provided in the storage room by a heat insulating door; the door opening device has a shaft member formed to cover a longitudinal full length of the heat insulating door, and is formed on the shaft a pair of upper and lower members of the member, and a lever handle mounted between the shaft member, and a lever upper member for restricting operation of the lever handle; and assisting the opening of the heat insulating door; and the air pressure adjusting means are adapted to each other The air pressure adjusting means is provided with a pressure difference between the outside of the heat box and the inside of the heat insulating box, and the air pressure adjusting means is provided to communicate with the outside of the heat insulating box and the inside of the heat insulating box; and the check valve is provided for the air pressure adjusting The check valve is disposed in the passage and controls the circulation of the air, and is disposed closer to the outside of the heat insulation box than the inside of the heat insulation box. The cooling pool is characterized by: forming a vertical surface on the outer side of the heat insulation box a recessed portion provided with the lever handle and the lever locking member; an outer side opening of the air pressure adjusting passage is formed on a top surface of the recess; the external side opening is formed in the air pressure adjusting passage Lower valve position. The cooling reservoir of claim 1, wherein the check valve is a plastic check valve that operates according to the weight of the valve body of the check valve and the pressure difference. A cooling reservoir according to the first aspect of the invention, wherein the air pressure adjusting passage extends substantially in a vertical direction from the outer side opening to the check valve setting portion. A cooling reservoir according to the second aspect of the invention, wherein the air pressure adjusting passage extends substantially in a vertical direction from the outer side opening to the check valve setting portion. For example, in the cooling pool of claim 1, wherein the air pressure adjusting means is disposed on the heat insulating door. For example, in the cooling pool of claim 2, the air pressure adjusting means is disposed on the heat insulating door. A cooling chamber according to claim 1, wherein an inner side opening of the air pressure adjusting passage is formed on an inner surface of the heat insulating box, and the inner side opening is formed in a check valve disposed in the air pressure adjusting passage. Low position. A cooling chamber according to claim 2, wherein an inner side opening of the air pressure adjusting passage is formed on an inner surface of the heat insulating box, and the inner side opening is formed in a check valve which is disposed in the air pressure adjusting passage Low position. A cooling store according to any one of claims 1 to 8 wherein there is a vehicle for movement on the bottom surface.