Novel refrigeration dryer evaporator capable of preventing refrigerant leakage

Abstract

The novel freezing dryer evaporator comprises a heat exchange chamber, a separation chamber and a circulation chamber which are arranged at intervals, a hot air flow channel and a dry cold air flow channel are arranged in the circulation chamber, high-temperature and high-pressure air fed into the hot air flow channel is fed into a first heat exchange channel in the heat exchange chamber, and the dry cold air flow channel is fed into a second heat exchange channel in the heat exchange chamber. And after heat exchange, the cold air flows into the separation chamber and then passes through the circulation chamber again, and dry cold air is output. Compressed high-temperature and high-pressure gas flows in through the circulation chamber and then enters the heat exchange chamber to exchange heat with a refrigerant in the heat exchange chamber, then the temperature of the high-temperature and high-pressure gas is reduced, the cooled low-temperature and high-pressure gas flows back to the circulation chamber, and then moisture in the low-temperature and high-pressure gas is separated out under the action of gravity. And finally, the gas is sent back to other positions through the circulation chamber, stable and reliable low-temperature and high-pressure dry gas is provided, and the safety risk is low between the chambers which are spaced from one another.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cold dryer evaporator technical field especially relates to a novel prevent refrigerant leakage's cold dryer evaporator. BACKGROUND

[0002] Cold dryer is the short name of freeze dryer, uses refrigerant and compressed air to carry out heat exchange, cools compressed air to 2~10 DEG C range to remove the moisture (water vapor component) in air.

[0003] Cold dryer heat exchanger, including pre-cooler (air-air heat exchange), evaporator (air-refrigerant heat exchange) and steam water separation component, the water vapor condensate separated after the flow air passes through pre-cooling and evaporator cooling is separated in steam water separation device, and after heat recovery, becomes dry air and exports after returning to pre-cooler.

[0004] With the global attention of climate change and environmental protection problem is improving unceasingly, environmental protection refrigerant will gradually become mainstream, and the future development trend of refrigerant industry will pay more attention to environmental protection, high efficiency and sustainable development.

[0005] R290 is commonly known as propane, it is a kind of natural carbon hydrogen refrigerant that can be obtained directly from liquefied gas.R290 does not contain chlorine atom in molecule, so ODP value is zero, and it will not destroy ozone layer.R290 GWP value is close to 0, and it will not cause "greenhouse effect".

[0006] The structure of the existing evaporator cannot exclude the possibility of refrigerant leakage to compressed air, and if it is directly used for high flammability environmental protection refrigerant, great safety risk will be caused, which limits the popularization and use of new environmental protection refrigerant in the field. INVENTION CONTENTS

[0007] The utility model provides a novel prevent refrigerant leakage's cold dryer evaporator that solves above -mentioned problem.

[0008] The utility model discloses a novel prevent refrigerant leakage's cold dryer evaporator that solves above -mentioned problem.

[0009] A novel prevent refrigerant leakage's cold dryer evaporator, including the heat exchange room, separation chamber and flow through room that are mutually spaced, the flow through room inside has hot air flow channel and dry cold air flow channel, the high temperature and high pressure air sent into the first heat exchange channel in heat exchange room in hot air flow channel is sent, and the refrigerant in the second heat exchange channel in heat exchange room is exchanged, and after heat exchange, dry cold air is output after flowing into separation chamber again through flow through room.

[0010] The interval assembly for heat conduction is arranged in the heat exchange room, and the interval assembly separates the second heat exchange channel and the first heat exchange channel.

[0011] In one embodiment, the spacing assembly comprises two heat insulation cavities and a conducting piece separating the heat insulation cavities, and the heat insulation cavities are connected with connecting pieces on the other side of the conducting piece, the connecting pieces and the conducting piece enclose the heat insulation cavities, and water is contained in the two heat insulation cavities respectively.

[0012] In one embodiment, in the flow-through chamber, the air flows in the hot air flow channel and the dry cold air flow channel are opposite or cross.

[0013] In one embodiment, in the heat exchange chamber, the air flows in the first channel and the second heat exchange channel are opposite or cross.

[0014] In one embodiment, the cold air in the separation chamber flows from bottom to top, and the moisture in the cold air is separated by gravity.

[0015] In one embodiment, a plurality of second heat exchange channels and first heat exchange channels are alternately distributed in the heat exchange chamber.

[0016] Compared with the prior art, the beneficial effects of the utility model at least include:

[0017] After the high-temperature and high-pressure gas is compressed, it first flows into the flow-through chamber, then enters the heat exchange chamber and exchanges heat with the refrigerant in the chamber to reduce its own temperature, the low-temperature and high-pressure gas cooled after cooling will backflow into the flow-through chamber, then the moisture in the low-temperature and high-pressure gas is separated by gravity, and finally the low-temperature and high-pressure dry gas is sent back to other positions through the flow-through chamber, providing stable and reliable low-temperature and high-pressure dry gas, and the safety risk between the mutually spaced chambers is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the cold dryer evaporator structure schematic diagram of the utility model embodiment one;

[0019] Figure 2 is the cold dryer evaporator three-dimensional structure diagram of the utility model embodiment two;

[0020] Figure 3 is the front view of the cold dryer evaporator of the utility model embodiment two;

[0021] Figure 4 is the rear view of the cold dryer evaporator of the utility model embodiment two.

[0022] In the drawing: 1, heat exchange chamber;11, first heat exchange channel;12, second heat exchange channel;2, separation chamber;3, flow-through chamber;4, hot air flow channel;5, dry cold air flow channel;6, spacing assembly;61, heat insulation cavity;62, conducting piece;63, connecting piece. DETAILED DESCRIPTION

[0023] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects of the example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the several views and the description of the figures, and a repeated description is omitted for clarity.

[0024] The words expressing position and direction described in the present application are illustrated by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0025] Referring to Figures 1-4 The present application provides a novel refrigerant leakage prevention evaporator for a cold dryer, comprising heat exchange chambers 1, separation chambers 2 and flow-through chambers 3 that are spaced apart from each other, the flow-through chambers 3 have hot air flow channels 4 and dry cold air flow channels 5 inside, high-temperature and high-pressure air sent into the hot air flow channels 4 is sent into first heat exchange channels 11 in the heat exchange chambers 1, and heat exchanged with refrigerants in second heat exchange channels 12 in the heat exchange chambers 1, and then flows into the separation chambers 2 after heat exchange and then passes through the flow-through chambers 3 to output dry cold air.

[0026] The heat exchange chambers are provided with spacing components 6 for heat conduction, the spacing components 6 space the second heat exchange channels 12 and the first heat exchange channels 11. The heat exchange between the mutually spaced relative closed chambers is in the form of heat conduction, and they do not contact each other, and the spacing components 6 are provided, which not only can realize heat conduction, but also effectively avoid the risk of refrigerant leakage in the heat exchange chambers, reduce the possibility of leakage into compressed air, and have higher reliability.

[0027] In one embodiment, the spacing component 6 comprises two heat insulation cavities 61 and a conduction piece 62 separated between the heat insulation cavities 61, and the heat insulation cavities 61 are connected with connecting pieces 63 on the other side of the conduction piece 62, and the connecting pieces 63 and the conduction piece 62 surround the heat insulation cavities 61. The heat insulation cavities 61 on both sides can also be the conduction piece 62, and water is respectively contained in the two heat insulation cavities 61. The material of the conduction piece 62 can be a metal piece or other material with good heat conductivity, and water is sealed between the conduction pieces 62 by a sealing process as a heat conduction medium. In the event of an extreme situation, the refrigerant leakage at one end of the heat exchange chamber 1 is first into the heat insulation cavity 61 on one side, and will not directly leak into the compressed air in the heat exchange chamber 1, causing air pollution.

[0028] In one embodiment, in the flow-through chamber 3, the air flow directions in the hot air flow channel 4 and the dry cold air flow channel 5 are opposite or cross. The air flow directions in the hot air flow channel 4 and the dry air flow channel in the flow-through chamber 3 are opposite, and in operation, the two oppositely flowing fluids have high heat exchange efficiency, which can reduce the temperature of the hot air flow channel 4 when entering, and can also increase the temperature of the low-temperature air flowing out of the dry cold air flow channel 5, so as to avoid excessively low temperature.

[0029] In one embodiment, in the heat exchange chamber 1, the air flow directions in the first channel and the second heat exchange channel 12 are opposite or cross. Similarly, the two oppositely flowing fluids have high heat exchange efficiency.

[0030] In one embodiment, the cold air in the separation chamber 2 flows from bottom to top, and the moisture in the cold air is separated by gravity. The cold air in the separation chamber 2 moves from low to high, and under the action of gravity, the liquid drops in the cold air fall to the bottom of the separation chamber 2, and the remaining gas is sent back to the flow-through chamber 3. The integrated design reduces the floor area of the cold dryer evaporator.

[0031] Referring to Figures 2-4 , the heat exchange chamber 1 is formed with a plurality of uniformly distributed second heat exchange channels 12 and first heat exchange channels 11 alternately distributed. The plurality of second heat exchange channels 12 and first heat exchange channels 11 are alternately distributed, and the second channel and the first channel are always spaced apart by the spacing component 6. By this way, the multi-channel heat exchange mode greatly improves the heat exchange efficiency. At the same time, the spacing component 6 arranged between the second heat exchange channel 12 and the first heat exchange channel 11 always blocks the two channels and can avoid direct leakage of refrigerant, thereby improving the overall safety and stability of the product.

[0032] Although the embodiments of the utility model have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. Those skilled in the art can change, modify, replace and modify the above embodiments without departing from the principles and purposes of the utility model, and all these changes should be within the protection scope of the utility model claim.

Claims

1. A new type of cold-dryer evaporator that prevents leakage of refrigerant, characterized in that, The heat exchanger comprises heat exchange chambers, separation chambers and flow-through chambers, the flow-through chambers have hot air flow channels and dry cold air flow channels, high-temperature and high-pressure air sent into the hot air flow channels is sent into the first heat exchange channels in the heat exchange chambers, exchanges heat with refrigerants in the second heat exchange channels in the heat exchange chambers, and flows into the separation chambers after heat exchange, and then outputs dry cold air after passing through the flow-through chambers again; The heat exchange chambers are provided with interval components for heat conduction, which separate the second heat exchange channels and the first heat exchange channels.

2. A new type of cold-dry machine evaporator that prevents leakage of refrigerant according to claim 1, characterized in that, The interval components comprise two heat insulation cavities and a conduction piece separated between the heat insulation cavities, and the heat insulation cavities are connected with connecting pieces on the other side of the conduction piece, the connecting pieces and the conduction piece surround the heat insulation cavities, and the two heat insulation cavities contain water respectively.

3. A new type of cold-dryer evaporator that prevents leakage of refrigerant according to claim 1 or 2, characterized in that, In the flow-through chambers, the air flow directions in the hot air flow channels and the dry cold air flow channels are opposite or cross.

4. A new type of cold-dryer evaporator that prevents leakage of refrigerant according to claim 3, characterized in that, In the heat exchange chambers, the air flow directions in the first heat exchange channels and the second heat exchange channels are opposite or cross.

5. A new type of cold-dry machine evaporator that prevents leakage of refrigerant according to claim 1, characterized in that, The cold air in the separation chambers flows from the bottom to the top, and the moisture in the cold air is separated by gravity.

6. A new type of cold-dry machine evaporator that prevents leakage of refrigerant according to claim 1, characterized in that, The heat exchange chambers are formed with a plurality of second heat exchange channels and first heat exchange channels which are alternately distributed uniformly.

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