JP6191206B2 - Regenerator and storage - Google Patents

Description

  The present invention relates to a regenerator and a storage, and more particularly relates to a regenerator that adjusts the ambient temperature to a desired temperature by heat stored in a stored heat storage agent, and a storage that includes the regenerator. It is.

  2. Description of the Related Art Conventionally, as a heat accumulator that adjusts an ambient temperature to a desired temperature by heat stored in a stored heat accumulating agent, one having a plurality of heat transfer cases, a cold accumulating member, and a refrigerant pipe is known.

  The heat transfer case is a flat plate formed by combining a pair of heat transfer plates, and each is supported by a support member and arranged in parallel at predetermined intervals. The cold storage member is formed by storing a sol-like or gel-like cold storage agent in a flexible bag, and is housed in each heat transfer case. The refrigerant pipe is a pipe through which the refrigerant supplied from the refrigerator passes, and is inserted in each heat transfer case so as to be wrapped in the cold storage member.

  In such a heat accumulator, when the refrigerant passes through the refrigerant pipe, the heat (cold heat) of the refrigerant is stored in the cool storage agent of the cool storage member, and the ambient air of the heat transfer case is cooled by the cool heat stored in the cool storage agent. (For example, refer to Patent Document 1).

JP-A-9-280714

  By the way, in the heat accumulator as described above, since the heat transfer case that houses the cold storage member has a flat plate shape, the heat transfer area for cooling the surrounding air by the cold heat stored in the cold storage agent is reduced. In order to expand, it was necessary to increase the volume of the heat transfer case, and the heat storage device itself had to be enlarged. Further, in the above heat accumulator, since the refrigerant pipe is inserted in each heat transfer case so as to be wrapped in the cold accumulating member, the cold heat of the refrigerant is directed toward the radially outward direction of the refrigerant pipe through the outer peripheral surface of the refrigerant pipe. Will be transmitted to. In other words, the transfer of cold heat to the cool storage agent is only in the radial direction of the refrigerant pipe in the radial direction, and depending on the cool storage agent, if there is a part that is greatly separated from the coolant pipe along the radial direction, the cool storage agent is frozen. Freezing time, that is, heat storage time for storing heat in the heat storage agent is prolonged. Thus, if the heat storage time is lengthened, the time required for the ambient temperature to reach a desired cooling temperature is consequently increased.

  In addition, although the thermal storage device which transmits and stores cold energy to the cold storage agent has been described here, it goes without saying that the same problem also occurs in the thermal storage device which transmits thermal energy to the thermal storage agent and stores it.

  In view of the above circumstances, an object of the present invention is to provide a heat accumulator and a container that can shorten the time for adjusting the ambient temperature to a desired temperature without causing an increase in size.

In order to achieve the above object, a heat accumulator according to claim 1 of the present invention includes a refrigerant pipe through which a refrigerant passes and an outer circumferential surface of a predetermined region of the refrigerant pipe, each of which is in a radially outward direction of the refrigerant pipe And a plurality of fin members provided in a manner aligned in the axial direction of the refrigerant pipe, and an outer peripheral area of a predetermined region of the refrigerant pipe including the fin member in a state where a heat storage agent is sealed inside And a cover member disposed so as to cover the cover member, wherein the cover member has a portion corresponding to a portion between the fin members adjacent to each other in the refrigerant pipe rather than a radially outer end portion of the fin member. The covering member is disposed in a manner close to the cover member and covers a part of the cover member corresponding to a portion between the adjacent fin members. Before department Wherein the in a manner to be close to the refrigerant pipe with an annular regulating member for regulating the radial dimensions of the covering part.

In the heat accumulator according to claim 2 of the present invention, each of the refrigerant pipe that allows the refrigerant to pass therethrough and the outer peripheral surface of the predetermined area of the refrigerant pipe extends in the radially outward direction of the refrigerant pipe. And a plurality of fin members provided in a manner aligned in the axial direction of the refrigerant pipe, and an outer peripheral area of a predetermined area of the refrigerant pipe including the fin member in a state where a heat storage agent is sealed inside. The cover member is disposed in such a manner that the portions corresponding to the fin members adjacent to each other are closer to the refrigerant pipe than the radially outer ends of the fin members. And a portion sealed so as to cover the refrigerant pipe is provided above the heat storage agent .

Further, heat storage device according to claim 3 of the present invention, Oite in claim 1 described above, the cover member is provided so that sealed portion so as to cover the refrigerant pipe becomes higher than the heat storage agent It is characterized by that.

  Moreover, the heat accumulator which concerns on Claim 4 of this invention is characterized by the said cover member being comprised from the resin material in any one of Claims 1-3 mentioned above.

  Moreover, the heat accumulator which concerns on Claim 5 of this invention is interposed between the said cover member and the said fin member in any one of Claims 1-4 mentioned above, and accept | permits passage of the said thermal storage agent. And a thin-film protective member having a hole to be formed.

  A regenerator according to claim 6 of the present invention is the regenerator according to any one of claims 1 to 5 described above, wherein a plurality of refrigerant pipes are arranged side by side in such a manner that the predetermined regions are parallel to each other, or In the case where one refrigerant pipe is arranged in a meandering manner in such a manner that the predetermined regions are parallel to each other, the outer peripheral end of the cover member covering each predetermined region is viewed from the refrigerant passing direction in the predetermined region. It is characterized by being arranged so as to overlap each other.

  Moreover, the storage which concerns on Claim 7 of this invention was equipped with the heat storage device as described in any one of the said Claims 1-6.

  According to the present invention, the cover member is disposed in such a manner that the portions corresponding to the fin members adjacent to each other are disposed closer to the refrigerant pipe than the end portions in the radially outer direction of the fin member. Concavities and convexities are formed on the surface of the cover member, and as a result, the heat transfer area with respect to the surrounding air can be increased, thereby suppressing an increase in size. Further, the cover member is disposed in such a manner that the portions corresponding to the fin members adjacent to each other are closer to the refrigerant pipe than the radially outer end of the fin member, and the refrigerant pipe and the fin member, The distance between the cover member and the cover member can be made substantially constant, that is, since the local portion that is largely separated from the refrigerant pipe and the fin member is not formed, the heat storage time for storing heat in the heat storage agent can be shortened. . Therefore, it is possible to shorten the time for adjusting the ambient temperature to a desired temperature without causing an increase in size.

FIG. 1 is a schematic view schematically showing an internal structure of a storage to which a regenerator according to an embodiment of the present invention is applied, that is, a storage according to an embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a longitudinal section of the regenerator shown in FIG. FIG. 3 is an explanatory view showing a modification of the heat accumulator shown in FIGS. 1 and 2. FIG. 4 is an explanatory view showing a modification of the heat accumulator shown in FIGS. 1 and 2.

  Exemplary embodiments of a heat accumulator and a container according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic view schematically showing an internal structure of a storage to which a regenerator according to an embodiment of the present invention is applied, that is, a storage according to an embodiment of the present invention. The container illustrated here is for holding the product stored therein in a state cooled to a desired temperature, and is configured to include the container main body 1 and the heat accumulator 30.

  The container main body 1 includes a main body cabinet 10 and a front door 20. The main body cabinet 10 is configured in a rectangular parallelepiped shape having a front surface opened by appropriately combining a plurality of metal plates, and heat insulation board (not shown) formed in advance in a plate shape is disposed on the inner surface thereof. It has a structure. The heat insulation board is obtained by attaching a resin film or kraft paper as a face material to both front and back surfaces of a plate-like member formed of a heat insulating material such as urethane foam.

  A caster 11 is disposed at the lower part of the main body cabinet 10, and the main body cabinet 10 is movable. The interior of the main body cabinet 10 is partitioned vertically by a partition plate 12, and the upper space of the partition plate 12 is a device housing space 10a for housing the heat accumulator 30, and the lower space of the partition plate 12 is a product. It is the goods accommodation space 10b for accommodating. Although not clearly shown in the figure, the partition plate 12 has a plurality of communication holes for communicating the device storage space 10a and the product storage space 10b.

  The front door 20 is for opening and closing the front opening of the main body cabinet 10 and has a heat insulating structure.

  The heat accumulator 30 is placed on the upper surface of the partition plate 12. FIG. 2 is a cross-sectional view schematically showing a longitudinal section of the regenerator shown in FIG. As shown in FIG. 2, the regenerator 30 includes a refrigerant pipe 31, a cover member 32, and a regulating member 33.

  The refrigerant pipe 31 is made of a material having excellent thermal conductivity, such as metal, and has a refrigerant passage 31a for allowing the refrigerant to pass therethrough. The refrigerant pipe 31 is bent in a substantially U shape as a whole. More specifically, the refrigerant pipe 31 includes a horizontal extension portion 311 extending along the horizontal direction, a left upper extension portion 312 extending upward from the left end portion of the horizontal extension portion 311, and And a right upper extension 313 extending upward from the right end of the horizontal extension 311.

  The horizontal extending portion 311 corresponds to a predetermined region of the present invention, and has a long shape in which the left-right direction is the longitudinal direction. On the outer peripheral surface of the horizontal extending portion 311, a plurality of fin members 34 are arranged in parallel at predetermined intervals along the axial direction (left-right direction) of the horizontal extending portion 311. Each of these fin members 34 has an annular shape having substantially the same outer diameter and inner diameter, and in particular, the inner diameter is equal to or slightly larger than the outer diameter of the refrigerant pipe 31 (horizontal extending portion 311). It is. Such fin members 34 are thermally connected to the horizontal extending portions 311 by the horizontal extending portions 311 relatively entering the respective hollow portions 341 and brazed or the like. The horizontal extending portions 311 (refrigerant pipes 31) are radially arranged so as to extend in the radially outward direction.

  The upper left extension 312 extends upward from the fin member 34 disposed in the horizontal extension 311, and the upper end thereof is connected to the refrigerant supply pipe 2. The right upper extension 313 extends upward from the fin members 34 disposed in the horizontal extension 311, and the upper end thereof is connected to the refrigerant delivery pipe 3.

  The refrigerant supply pipe 2 and the refrigerant delivery pipe 3 are pipes for connecting the regenerator 30 (refrigerant pipe 31) and the refrigerator 40, respectively.

  As shown in FIG. 1, the refrigerator 40 includes a compressor 41 and a condenser 42. The compressor 41 is connected to the refrigerant delivery pipe 3 at the inlet side, and sucks the refrigerant from the heat accumulator 30 through the refrigerant delivery pipe 3 and compresses the sucked refrigerant into a high temperature and high pressure state. The condenser 42 is connected to a pipe whose inlet side is connected to the outlet side of the compressor 41, and its outlet side is connected to the refrigerant supply pipe 2. The condenser 42 is configured to cause the refrigerant compressed and discharged by the compressor 41 to exchange heat with ambient air to condense, and supply the refrigerant condensed through the refrigerant supply pipe 2 to the heat accumulator 30.

  In the embodiment of the present invention, such a refrigerator 40 is provided detachably with respect to the storage. Although not clearly shown in the figure, the supply end of the refrigerant supply pipe 2 and the upper end of the left upper extension 312 are detachable via a connector member, and the delivery end of the refrigerant delivery pipe 3; It can be attached to and detached from the upper end of the upper right extension 313 via a connector member.

  When the refrigerant is passed through the refrigerant pipe 31, the refrigerant supply pipe 2 and the refrigerant delivery pipe 3 are connected to the refrigerant pipe 31, and when there is no need to pass the refrigerant through the refrigerant pipe 31, the refrigerant supply The pipe 2, the refrigerant delivery pipe 3, and the refrigerant pipe 31 are separated.

  In addition, in this invention, the refrigerator 40 is not what can be attached or detached with respect to a storage, but may be always accommodated in a storage. In this case, the refrigerator 40 may be housed in a housing room defined with the product housing space 10b below the product housing space 10b in the main body cabinet 10, or if the strength of the main body cabinet 10 is sufficiently high, It may be placed on the upper surface of the main body cabinet 10.

  The refrigerant supply pipe 2 is a pipe for supplying the refrigerant from the refrigerator 40 to the heat accumulator 30, and is connected to the upper end of the left upper extension part 312 of the refrigerant pipe 31 as described above. Although not clearly shown in the figure, an expansion mechanism is disposed in the middle of the refrigerant supply pipe 2. The expansion mechanism is constituted by an expansion valve, a capillary tube, or the like, and decompresses the refrigerant condensed by the condenser 42 to adiabatically expand.

  The refrigerant delivery pipe 3 is a pipe for delivering the refrigerant from the regenerator 30 to the refrigerator 40, and the delivery end is connected to the right upper extension 313 as described above.

  The cover member 32 is made of, for example, a thin film resin material such as a film, and has a cylindrical shape with both ends open. Here, it is preferable that the cover member 32 is reinforced by embedding resin fibers or the like therein.

  This cover member 32 has sealing members 36 at both ends in a state in which a regenerator 35 such as salt water is sealed inside so as to cover the outer peripheral area of the horizontal extending portion 311 of the refrigerant pipe 31 including the fin member 34. Is sealed. More specifically, one end of the cover member 32 is sealed by one sealing member 36 in a state of covering the lower part of the left upper extension 312, and the other end of the cover member 32 is It is sealed by the other sealing member 36 in a state of covering the lower part of the upwardly extending part 313. Here, the cover member 32 is disposed such that the portion sealed by the sealing member 36 is above the cold storage agent 35, that is, above the liquid level of the cold storage agent 35 by a height H.

  Reference numeral 37 in FIG. 2 denotes a protective member. The protective member 37 is a thin-film member in which a plurality of holes (not shown) are formed, such as a mesh material, and has a cylindrical shape with both ends open. The protective member 37 has both end portions 37 a that can be expanded and contracted in the radial direction by an elastic body such as rubber, and encloses all the fin members 34 so as to be interposed between the fin member 34 and the cover member 32. Thus, both end portions 37 a are attached in the vicinity of both ends of the horizontally extending portion 311. The hole of the protection member 37 allows the cool storage agent 35 to pass therethrough.

  The restricting member 33 is formed in an annular shape by joining the end portions 332 of the pair of left and right semicircular restricting portions 331 together. The outer diameter of the restricting member 33 is smaller than the outer diameter of the fin member 34, and the inner diameter is larger than the outer diameter of the refrigerant pipe 31. The regulating member 33 is between the fin members 34 adjacent to each other, between the leftmost fin member 34 and the left upper extension 312, and between the rightmost fin member 34 and the right upper extension 313. In FIG. 3, the corresponding restricting portions 331 are joined together so as to cover a part of the cover member 32. Thereby, the regulating member 33 regulates the size of the covering portion in the radial direction in such a manner that the covering portion covered by itself is closer to the refrigerant pipe 31 than the radially outer end of the fin member 34. As a result, the cover member 32 is disposed in such a manner that at least a portion corresponding to the fin members 34 adjacent to each other is closer to the refrigerant pipe 31 than the radially outer end of the fin member 34.

  In the storage having such a configuration, when the cold storage agent 35 of the regenerator 30 is frozen, that is, when the cold storage agent 35 is stored, the refrigerant supply pipe 2, the refrigerant delivery pipe 3, and the refrigerant pipe 31 are connected. The refrigerator 40 is driven by connecting.

  As a result, the high-temperature and high-pressure refrigerant compressed by the compressor 41 passes through the refrigerant supply pipe 2 after being condensed by the condenser 42, and is adiabatically expanded by the expansion mechanism in the middle to become a low-temperature and low-pressure refrigerant. It passes through 30 refrigerant pipes 31. The refrigerant passing through the refrigerant pipe 31 evaporates by exchanging heat with the cold storage agent 35 through the fin member 34 and the like while passing through the refrigerant pipe 31, and then sucked into the compressor 41 through the refrigerant delivery pipe 3 and circulated. repeat. As a result, the cold storage agent 35 is cooled and frozen by the refrigerant passing through the refrigerant pipe 31.

  As described above, in the heat accumulator 30 according to the present embodiment, the cover member 32 is located between the fin members 34 adjacent to each other, between the leftmost fin member 34 and the left upper extension 312. Corresponding portions and corresponding portions between the rightmost fin member 34 and the right upper extension 313 are arranged in a manner closer to the refrigerant pipe 31 than the radially outer end of the fin member 34. Therefore, irregularities are formed on the surface of the cover member 32 that encloses the cool storage agent 35. As a result, it is possible to suppress an increase in size and to enlarge a heat transfer area with respect to the surrounding air. Further, the cover member 32 is arranged in such a manner that portions corresponding to each other between the fin members 34 adjacent to each other are disposed closer to the refrigerant pipe 31 than the radially outer end of the fin member 34. 31 and the fin member 34 and the cover member 32 can be substantially spaced apart from each other, that is, a local portion that is largely separated from the refrigerant pipe 31 and the fin member 34 is not formed. Time, that is, heat storage time for storing heat in the heat storage agent can be shortened.

  Therefore, according to the heat accumulator 30 according to the embodiment of the present invention, it is possible to shorten the time for adjusting the ambient temperature to a desired temperature without causing an increase in size.

  Further, according to the heat accumulator 30, the cover member 32 is such that the portion sealed by the sealing member 36 is above the cold storage agent 35, that is, above the liquid level of the cold storage agent 35 by a height H. Since it is disposed, the cold storage agent 35 can be satisfactorily sealed even if the volume change of the cold storage agent 35 due to freezing and thawing of the cold storage agent 35 occurs.

  Further, according to the heat accumulator 30, the protective member 37 in which a plurality of holes that allow the passage of the cool storage agent 35 is provided is provided between the cover member 32 and the fin member 34. It is possible to prevent the cover member 32 from being damaged at the edge portion of the fin member 34 or the like.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and various modifications can be made.

  In the embodiment described above, the restricting member 33 has an annular shape by joining the end portions 332 of the pair of left and right semicircular restricting portions 331 together, but in the present invention, It may be a circular ring that can expand and contract in the radial direction by incorporating an elastic body. In the present invention, the regulating member 33 is not indispensable, and the portion corresponding to the portion between the adjacent fin members in the cover member is thermally contracted by heating or the like, so that the portion is radially end of the fin member. You may make it make it close to refrigerant | coolant piping rather.

  In the embodiment described above, the protective member 37 is provided. However, in the present invention, the protective member 37 may not be provided.

  In the above-described embodiment, the heat accumulator 30 including one refrigerant pipe 31 bent in a substantially U shape has been described. However, in the present invention, the horizontal extending portions 311 that are predetermined regions are parallel to each other. The present invention can also be applied to the heat accumulator 30 in which a plurality of refrigerant pipes 31 are arranged in parallel. In this case, as shown in FIG. 3, the cover member 32 that covers the horizontal extension portion 311 of each refrigerant pipe 31 has an outer peripheral end portion of the cover member 32 that covers each horizontal extension portion 311 as the horizontal extension portion 311. It is preferable that they are arranged so as to overlap each other when viewed from the direction of passage of the refrigerant. According to such a configuration, the contact area between the surface of the cover member 32 per unit volume and the ambient air can be increased, and the ambient temperature is adjusted to a desired temperature while suppressing the enlargement of the entire regenerator 30. Time can be shortened.

  In the above-described embodiment, the heat accumulator 30 including one refrigerant pipe 31 bent in a substantially U shape has been described. However, in the present invention, the horizontal extending portions 311 that are predetermined regions are parallel to each other. The present invention can also be applied to the heat accumulator 30 provided in such a manner that one refrigerant pipe 31 meanders. In this case, as shown in FIG. 4, the cover members 32 that cover the horizontal extending portions 311 are arranged so that the outer peripheral end portions overlap each other when viewed from the refrigerant passing direction in the horizontal extending portions 311. Is preferred. According to such a configuration, the contact area between the surface of the cover member 32 per unit volume and the ambient air can be increased, and the ambient temperature is adjusted to a desired temperature while suppressing the enlargement of the entire regenerator 30. Time can be shortened.

DESCRIPTION OF SYMBOLS 1 Container body 10 Main body cabinet 20 Front door 30 Regenerator 31 Refrigerant piping 31a Refrigerant passage 311 Horizontal extension part 312 Left upper extension part 313 Right upper extension part 32 Cover member 33 Restriction member 331 Restriction part 34 Fin member 35 Cold storage Agent (heat storage agent)
36 Sealing member 37 Protection member

Claims (7)

A refrigerant pipe for passing the refrigerant inside;
A plurality of fin members provided on the outer peripheral surface of the predetermined region of the refrigerant pipe, each extending in a radially outward direction of the refrigerant pipe and arranged in an axial direction of the refrigerant pipe;
A heat storage device comprising: a cover member disposed so as to cover an outer peripheral region of a predetermined region of the refrigerant pipe including the fin member in a state in which a heat storage agent is enclosed therein,
The cover member is disposed in such a manner that a portion corresponding to a fin member adjacent to each other is closer to the refrigerant pipe than a radially outer end of the fin member ,
A mode in which a portion of the cover member corresponding to a portion between adjacent fin members is covered and a covering portion that is covered by the cover member is closer to the refrigerant pipe than a radially outer end of the fin member. A heat accumulator comprising an annular regulating member for regulating the size of the covering portion in the radial direction . A refrigerant pipe for passing the refrigerant inside;
A plurality of fin members provided on the outer peripheral surface of the predetermined region of the refrigerant pipe, each extending in a radially outward direction of the refrigerant pipe and arranged in an axial direction of the refrigerant pipe;
A cover member disposed so as to cover an outer peripheral region of a predetermined region of the refrigerant pipe including the fin member in a state in which a heat storage agent is sealed inside;
A heat accumulator with
The cover member is disposed so that a portion corresponding to a fin member adjacent to each other is disposed closer to the refrigerant pipe than an end portion in the radially outer direction of the fin member, and is sealed so as to cover the refrigerant pipe. A heat storage device characterized in that the portion is provided above the heat storage agent . The regenerator according to claim 1, wherein the cover member is provided so that a portion sealed to cover the refrigerant pipe is located above the heat storage agent.   The regenerator according to claim 1, wherein the cover member is made of a resin material.   5. The thin film-like protective member provided with a hole portion that is interposed between the cover member and the fin member and allows the heat storage agent to pass therethrough is provided. The heat accumulator according to one.   In the case where a plurality of refrigerant pipes are arranged in parallel so that the predetermined areas are parallel to each other, or in the case where one refrigerant pipe is arranged in a meandering manner so that the predetermined areas are parallel to each other, The heat accumulator according to any one of claims 1 to 5, wherein the outer peripheral end portions of the cover member covering the predetermined region are arranged so as to overlap each other when viewed from the passage direction of the refrigerant in the predetermined region.   A container comprising the heat accumulator according to any one of claims 1 to 6.

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