JPH058438Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cold storage plate used in a cold storage plate type refrigerator, which is a type of vehicle-mounted cooling container.

[Prior Art] A conventional cold storage plate consists of a flat cold storage container with good thermal conductivity and a cold storage agent filled in this cold storage container. The evaporation pipe is housed within this cool storage container and is directly immersed in the cool storage agent. This cold storage plate is arranged inside the cold storage plate type refrigerator.

In a cold storage plate type refrigerator, the inside of the refrigerator is cooled through an evaporation pipe by a refrigeration system using commercial power at the base. At this time, the cold storage plate is also cooled and stored by the evaporation pipe. When the cold storage plate type refrigerator is transported by a truck or the like, the inside of the refrigerator is cooled by the cold storage plate.

[Problem to be solved by the invention] However, in the conventional cold storage plate, the evaporation pipe is brought into direct contact with the cold storage agent such as polypropylene glycol or calcium chloride, so the evaporation pipe is not exposed to the cold storage agent. It had the disadvantage that it would corrode as it warped.

Further, since the cold storage container of the cold storage plate is sealed by brazing, it is impossible to individually take out the evaporation pipes housed inside the cold storage plate. Therefore, when inspecting or repairing the evaporation pipe, the cold storage container must be disassembled.
For this reason, conventional cold storage plates have problems in terms of workability, economy, etc. when maintaining evaporation pipes.

Therefore, an object of the present invention is to provide a cold storage plate in which the evaporation pipe is not corroded and the maintenance of the evaporation pipe is easy.

[Means for Solving the Problems] According to the present invention, in a cold storage plate including a cold storage container and a cold storage agent filled in the cold storage container and cooled by an evaporation pipe, the cold storage container It consists of a first sealed container filled with a part of the refrigerant, and a second sealed container that is separably joined face-to-face with the first sealed container and filled with the remainder of the refrigerant,
The evaporation pipe is sandwiched between the first airtight container and the second airtight container, and at least one of the side walls of the first and second airtight containers on the side of the evaporation pipe and the side wall of the side opposite to the evaporation pipe is A regenerator plate is obtained, characterized in that a convex portion is partially provided on one inner surface, and the convex portion partially fixes the side wall on the evaporation pipe side and the side wall on the opposite side to the evaporation pipe. .

[Function] In the case of the cold storage plate of the present invention, the cold storage agent is indirectly cooled by the evaporation pipe through the walls of the first and second closed containers. Therefore, the regenerator does not come into direct contact with the evaporation pipe.

On the other hand, even if the refrigerant gradually freezes and begins to expand due to the evaporation pipe, the first sealed container and the second sealed container have a side wall on the evaporation pipe side and a side wall on the opposite side from the evaporation pipe, respectively. Because they are partially fixed, these side walls do not bulge out. For this reason, the surface contact between the first sealed container and the second sealed container is always maintained closely, so there is no possibility that a gap will occur in this area and the adhesion between the side wall on the evaporation pipe side and the evaporation pipe will deteriorate. . As a result, the side walls of the first and second sealed containers on the evaporation pipe side are always in close contact with the evaporation pipe, so that the coolant is efficiently cooled by the evaporation pipe.

In addition, in the case of the cold storage plate of the present invention, if the first closed container and the second closed container are separated, the evaporation pipe is exposed.

[Embodiment] FIG. 1 is an exploded perspective view of a cold storage plate according to an embodiment of the present invention.

Referring to FIG. 1, the cold storage container is divided into a first closed container 1 and a second closed container 2. The first and second closed containers 1 and 2 are each filled with a cold storage agent.

The side walls 4 of the first closed container 1 and the second closed container 2 on the evaporation pipe 3 side are each formed into a flat plate shape. Each side wall 4 is provided with a groove 5 having a semicircular cross section. Each groove 5 is meandering so as to correspond to the evaporation pipe 3. As a result, when the first hermetic container 1 and the second hermetic container 2 are joined together, a passage having a circular cross section for accommodating the evaporation pipe 3 is formed. Of course, the inner diameter of this passage is made to be approximately equal to the outer diameter of the evaporation pipe 3, and the wall constituting this passage and the evaporation pipe 3 are in close contact with each other.

A curved portion 7 is formed on the side wall 6 of the first closed container 1 and the second closed container 2 on the side opposite to the evaporation pipe 3. A large number of ribs 8 are formed on the curved portion 7 at regular intervals. The curved portion 7 and the rib 8 are integrally formed. The strength of the side wall 6 is increased by these curved portions 7 and ribs 8, and even when the cold storage agent expands, the side wall 6
It is designed so that it does not swell.

FIG. 2 is a side view of the cool storage plate shown in FIG. 1.

Referring also to FIG. 2, the side wall 6 of the first closed container 1 and the second closed container 2 opposite to the evaporation pipe 3
A fitting groove 9 is formed in each. The first closed container 1 and the second closed container 2 are held together by fitting the ends of the fixtures 10 formed in a substantially U-shape into these fitting grooves 9. There is. Each fitting groove 9 is provided with a large number of vertical grooves so that fixing tools of various lengths can be used.

A mouth portion 11 is provided at one end of the first and second closed containers 1 and 2, respectively, so that the cold storage agent can be replenished or replaced. A cap 12 is attached to each mouth portion 11.

FIG. 3 is a plan view of the cool storage plate shown in FIG. 1.

Referring also to FIG. 3, sloped portions 13 are formed at both ends of the first hermetic container 1 and the second hermetic container 2, respectively. With this, the first closed container 1
When the second airtight container 2 and the second airtight container 2 are joined together, air flow parallel to the side wall 6 is improved.

FIG. 4 is a cross-sectional view taken along line - in FIG.

Referring also to FIG. 4, on the outer surfaces of the side walls 4, 4 on the evaporation pipe 3 side of the first and second closed containers 1, 2, there are six truncated cone-shaped partial depressions 14, 14, respectively.
Individually formed. As a result, these depressions 1
4 and 14, convex portions are formed on the inner surfaces of the side walls 4 and 4. On the other hand, on the side walls 6, 6 of the first and second closed containers 1, 2 on the opposite side from the evaporation pipe 3, partial concavity 15, which is shaped like a truncated cone, is formed at a portion facing the depressions 14, 14, respectively. Six pieces of 15 are formed. As a result, convex portions are formed on the inner surfaces of the side walls 6, 6 corresponding to these depressions 15, 15. A convex portion formed by a concave 14 and a convex portion 1 opposite to the convex portion
The convex portions indicated by 5 are fixed at their tips. As a result, even if the cold storage agent expands due to freezing, the side walls 4, 4 on the evaporation pipe 3 side of the first and second closed containers 1, 2 and the side walls 6, 6 on the opposite side from the evaporation pipe 3 are protected. , to prevent it from expanding. As a result, the surface contact between the first and second airtight containers 1 and 2 is always kept close, so that a gap is created in this area and the close contact between the side walls 4 and 4 on the side of the evaporation pipe 3 and the evaporation pipe 3 is prevented. It never gets worse.

In the embodiment described above, convex portions are formed on the inner surface of each side wall by providing cone-shaped depressions 14 and 15 on both the side wall 4 on the evaporation pipe 3 side and the side wall 6 on the opposite side from the evaporation pipe 3. However, a depression may be provided in only one of the side walls 4 and 6, and the tip of the convex portion formed by this depression may be fixed to the other side wall.

Note that the convex portion does not necessarily need to be formed by recessing the inner surface of the side wall, and a protrusion may be provided on the inner surface of the side wall and this may be used as a convex portion. Further, the shape of the convex portion is not particularly limited either.

[Effect of the invention] In the cold storage plate according to the invention, the cold storage agent is the first and second
Since the refrigerant is indirectly cooled by the evaporation pipe through the wall of the sealed container, the refrigerant does not come into direct contact with the evaporation pipe. Therefore, the evaporation pipe will not be corroded by the regenerator.

In addition, in the cold storage plate according to the present invention, even if the cold storage agent gradually freezes and begins to expand through the evaporation pipe, the first airtight container and the second airtight container each have a side wall on the side of the evaporation pipe, Since the evaporation pipe and the opposite side wall are partially fixed, these side walls do not swell, and no gap is created between the joint surfaces of the first closed container and the second closed container. As a result, the side wall on the evaporation pipe side and the evaporation pipe always maintain a close contact state, so that the cool storage agent is efficiently cooled by the evaporation pipe.

Further, in the cold storage plate according to the present invention, when the first closed container and the second closed container are separated, the evaporation pipe is exposed. Therefore, maintenance of the evaporation pipe can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a cold storage plate according to an embodiment of the present invention, FIG. 2 is a side view of the cold storage plate shown in FIG. 1,
3 is a plan view of the cool storage plate shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along the - line in FIG. 3. DESCRIPTION OF SYMBOLS 1... First airtight container, 2... Second airtight container, 3... Evaporation pipe, 4... Side wall, 5... Groove, 6... Side wall, 7... Curved part, 8... Rib , 9
... Fitting groove, 10 ... Fixture, 11 ... Mouth, 1
2... Cap, 13... Inclined portion, 14... Recess, 15... Recess.

Claims (1)

[Scope of utility model registration request] In a cold storage plate including a cold storage container and a cold storage agent filled in the cold storage container and cooled by an evaporation pipe, the cold storage container includes a first sealed container filled with a portion of the cold storage agent, and a first closed container filled with a portion of the cold storage agent; It consists of a first sealed container and a second sealed container that is separably joined face-to-face and filled with the remainder of the refrigerant, and the evaporation pipe is sandwiched between the first sealed container and the second sealed container. , a convex portion is partially provided on the inner surface of at least one of a side wall on the evaporation pipe side and a side wall on the opposite side from the evaporation pipe of the first and second closed containers, and the convex portion allows the evaporation to occur. A cold storage plate characterized in that a side wall on the pipe side and a side wall on the opposite side to the evaporation pipe are partially fixed.