# US 2020/0400367 A1 · Refrigeration device

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- Number: US 2020/0400367 A1
- Document ID: US20200400367A1
- Status: Published application
- Kind: A1
- Application number: 17/007,487
- Filed: 2020-08-31
- Published: 2020-12-24
- Earliest claimed: 2018-03-06
- Assignees: Phc Holdings Corporation
- Applicants: Phc Holdings Corporation
- Inventors: Susumu KOBAYASHI; Hiroyuki SATO
- Web page: https://patentgrep.com/patent/US20200400367A1

## CPC

- F25D 19/00: Arrangement or mounting of refrigeration units with respect to devices {or objects to be refrigerated, e.g. infrared detectors}
- F25D 23/062: {defining a cabinet}
- F25D 3/10: using liquefied gases, e.g. liquid air {(for cooling semiconductor devices H10W40/305)}
- F25D 17/02: for circulating liquids, e.g. brine
- F28D 15/02: in which the medium condenses and evaporates, e.g. heat pipes {(heat pipes used in solar heat collectors F24S10/95; in radiators F28D1/0226; in nuclear reactors G21C15/257)}
- F25B 9/14: characterised by the cycle used, e.g. Stirling cycle
- F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

This refrigeration device is provided with an inner box which surrounds a cooling compartment, a refrigerant liquefying device which is disposed at a higher position than the inner box, and refrigerant piping which is connected to the refrigerant liquefying device and which has a sloped section disposed directly above the inner box while being tilted relative to a horizontal plane.

## Claims

### Claim 1

A refrigeration apparatus comprising:
an inner box surrounding a cooling chamber;
a refrigerant liquefier disposed at a position higher than the inner box; and
a refrigerant pipe connected to the refrigerant liquefier, the refrigerant pipe comprising an inclined portion disposed directly above the inner box in a state where the inclined portion is inclined with respect to a horizontal plane.

### Claim 2 (depends on 1)

The refrigeration apparatus according to claim 1, wherein a ceiling of the inner box is inclined with respect to the horizontal plane.

### Claim 3 (depends on 2)

The refrigeration apparatus according to claim 2, wherein the ceiling of the inner box and the inclined portion are parallel to each other.

### Claim 4 (depends on 1)

The refrigeration apparatus according to claim 1, wherein the inclined portion is in contact with the ceiling of the inner box.

### Claim 5 (depends on 1)

The refrigeration apparatus according to claim 1, further comprising a heat transfer member, wherein
a ceiling of the inner box is horizontal, and
the inclined portion is supported at the ceiling of the inner box through the heat transfer member.

### Claim 6 (depends on 1)

The refrigeration apparatus according to claim 1, wherein the inclined portion is meandering.

### Claim 7 (depends on 1)

The refrigeration apparatus according to claim 1, wherein a plurality of the refrigerant pipes are provided.

### Claim 8 (depends on 1)

The refrigeration apparatus according to claim 1, wherein the refrigerant pipe comprises a vertical portion connected to the inclined portion and disposed parallel to a vertical plane.

### Claim 9 (depends on 8)

The refrigeration apparatus according to claim 8, wherein the vertical portion is arranged along two or more sides of the inner box, and is bent at a predetermined angle in plan view.

### Claim 10 (depends on 1)

The refrigeration apparatus according to claim 1, wherein the refrigerant pipe comprises a lower inclined portion disposed directly below the inner box in a state where the lower inclined portion is inclined with respect to the horizontal plane.

### Claim 11 (depends on 1)

The refrigeration apparatus according to claim 1, wherein the inclined portion causes a refrigerant of a liquid phase to flow through the inclined portion.