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Refrigeration-cycle equipment

a technology of refrigerant cycle and equipment, which is applied in the direction of refrigeration components, mechanical equipment, light and heating equipment, etc., can solve the problems of ozone layer depletion of refrigerant, etc., and achieve the effect of extending the life of the compressor and reducing the pressure of the refrigeran

Inactive Publication Date: 2015-04-30
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent provides refrigeration-cycle equipment that can extend the life of the compressor. It does this by considering the state of the refrigerant that returns to the evaporative mechanism. The equipment includes a main circuit and an evaporation-side circulation circuit. The main circuit compresses refrigerant vapor, which is then condensed in the main circuit and stored as a liquid in the evaporative mechanism. The evaporation-side circulation circuit has a heat exchanger and a decompression mechanism, which reduces the pressure of the refrigerant. The refrigerant then returns to the evaporative mechanism to be re-evaporated. The equipment also includes an interaction mechanism that prevents droplets from being fed into the compressor, which helps to extend the life of the compressor.

Problems solved by technology

However, such a refrigerant has a problem of ozone layer depletion, global warming, and the like.

Method used

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  • Refrigeration-cycle equipment
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Examples

Experimental program
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embodiment

[0065]As illustrated in FIG. 1, refrigeration-cycle equipment 1 includes a main circuit 10, a condensation-side circulation circuit 20, and an evaporation-side circulation circuit 30. The main circuit 10 includes a compressor 3, a condensation mechanism 4, and an evaporative mechanism 2. The compressor 3, the condensation mechanism 4, and the evaporative mechanism 2 are connected to one another in that order. The evaporative mechanism 2 and the compressor 3 are connected to each other with a passage 5a. The compressor 3 and the condensation mechanism 4 are connected to each other with a passage 5b. The condensation mechanism 4 and the evaporative mechanism 2 are connected to each other with a passage 5c. The main circuit 10, the condensation-side circulation circuit 20, and the evaporation-side circulation circuit 30 are filled with a refrigerant. The refrigerant is at a negative pressure, i.e., a pressure lower than the atmospheric pressure. The saturated vapor pressure of the refr...

modified examples

[0077]The above embodiment can be modified from various viewpoints. Now, modified examples of the above embodiment will be described. Configurations according to the following modified examples are the same as the configuration according to the above embodiment, unless particularly specified. Elements the same as or like those described in the above embodiment are denoted by corresponding ones of the reference numerals that are used in the above embodiment, and description of such elements may be omitted. In the following modified examples, the same or like elements are denoted by the same reference numerals, and redundant description of such elements may be omitted.

first modified example

[0078]As illustrated in FIG. 3, the interaction mechanism 35 may be, for example, a connection portion 34b that is connected to the side face of the evaporative mechanism 2. The connection portion 34b is connected to the evaporative mechanism 2 such that the flow of the refrigerant that has returned from the evaporation-side circulation circuit 30 to the evaporative mechanism 2 has a velocity component in a spiral circumferential direction of the internal space. Specifically, the connection portion 34b is connected to the evaporative mechanism 2 such that the central axis of a passage provided by the connection portion 34b does not intersect the central axis of the internal space of the evaporative mechanism 2. Thus, as illustrated in FIG. 4, the refrigerant that has returned to the evaporative mechanism 2 through the connection portion 34b swirls in the spiral circumferential direction of the internal space of the evaporative mechanism 2. Therefore, if the refrigerant that has retu...

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PUM

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Abstract

The disclosed refrigeration-cycle equipment comprises a main circuit and an evaporation-side circulation circuit. The main circuit includes i) a compressor that compresses refrigerant vapor, ii) a condensation mechanism that condenses the refrigerant vapor, and iii) an evaporative mechanism that stores refrigerant liquid and that evaporates the refrigerant liquid. The evaporation-side circulation circuit includes a heat exchanger for heat absorption and a decompression mechanism. The refrigerant returns to the evaporative mechanism after the refrigerant absorbing heat in the heat exchanger for heat absorption and the pressure of the refrigerant being reduced in the decompression mechanism. The refrigeration-cycle equipment further has an interaction mechanism that prevents droplets contained in the refrigerant having returned from the evaporation-side circulation circuit to the evaporative mechanism from being fed into the compressor.

Description

BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to a refrigeration-cycle equipment.[0003]2. Description of the Related Art[0004]Hitherto, refrigeration-cycle equipment employing a Freon refrigerant or an alternative Freon refrigerant has been widely used. However, such a refrigerant has a problem of ozone layer depletion, global warming, and the like. Hence, refrigeration-cycle equipment employing an evaporative liquid, such as water, as a refrigerant that have little damage on the global environment has been proposed.[0005]In Japanese Unexamined Patent Application Publication No. 2008-122012, vaporizing cooling equipment is disclosed as refrigeration-cycle equipment that includes an evaporator, a cooling point, a centrifugal compressor, a Roots compressor, and a condenser. The evaporator boils and evaporates an evaporative liquid, such as water, at a pressure that is lower than the atmospheric pressure. The water having been boiled and evaporated by the evapo...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B1/00F25B49/02F25B41/04
CPCF25B1/005F25B2600/2513F25B49/02F25B41/043F25B1/00F25B41/00F25B2500/28F25B25/005F25B39/02F25B39/028F25B2400/16
Inventor HAYASHI, YOSHIMITAMURA, TOMOICHIRONISHIBU, MAMORUMATSUURA, TAKAHIROKAWANO, BUNKIMARUHASHI, IORI
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD