Evaporator of refrigerated dryer

Abstract

The utility model relates to the technical field of drying machines, and discloses an evaporator of a refrigeration type drying machine, which comprises a gas-water separator, a precooling heat regenerator, a precooler, a circulating pipe, a compressor, a drying filter, a condenser, a pressure gauge and an evaporator, the pre-cooling heat regenerator is communicated with the gas-water separator, and the gas-water separator is communicated with the evaporator; the evaporator is communicated with the condenser, and a communicating pipeline is communicated with a drying filter in series; the compressor is communicated with the evaporator through a circulating pipe, and a connecting pipeline of the compressor and the evaporator is communicated with a pressure gauge; and the condenser is communicated with the compressor. According to the utility model, the flow velocity of the liquid entering the curved pipe fitting and the flow velocity of the liquid flowing at the opening binding part are high, and under the flow velocity difference, the liquid at the U-shaped part and the chamfered isosceles triangle part at the two sides and the liquid flowing at the opening binding part can be replaced, so that the temperature replacement rate from the center to the liquid at the two sides is accelerated.

Description

Technical Field

[0001] The utility model relates to a dryer, in particular to an evaporator of a refrigeration dryer. Background Art

[0002] Traditional refrigerated dryers utilize a refrigerant to exchange heat with compressed air, reducing the compressed air's temperature to a dew point between 2 and 10°C. With the continuous development of the refrigerated dryer industry, more and more companies are entering the air compressor sector, with many emerging as prominent players. Refrigerated dryers are categorized by condenser cooling method: air-cooled or water-cooled. They are categorized by inlet air temperature: high-temperature (below 80°C) and normal-temperature (around 45°C). Operating pressures include standard (0.3-1.0 MPa) and medium- and high-pressure (above 1.2 MPa). In addition, specialized refrigerated dryers are available to handle non-air media, such as carbon dioxide, hydrogen, natural gas, blast furnace gas, and nitrogen.

[0003] In existing technologies, the core of a refrigerated dryer lies in the evaporator. The pipes in the existing evaporator adopt a circular tube structure, and fins are added to the circular tube structure. The air temperature that contacts the inner wall of the pipe during liquid flow is carried away. As the liquid flows in the pipe, the temperature of the liquid in the center of the pipe is displaced to the liquid near the inner wall of the pipe, thereby achieving temperature transfer. How to optimize this temperature transfer method is expected to be well solved! Utility Model Content

[0004] The purpose of this utility model is to provide an evaporator for a refrigerated dryer to solve the above problems.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] An evaporator of a refrigerated dryer includes a gas-water separator, a precooling regenerator, a precooler, a circulation pipe, a compressor, a drying filter, a condenser, a pressure gauge, and an evaporator, wherein:

[0007] The precooler is connected to the precooling regenerator, the precooling regenerator is connected to the gas-water separator, and the gas-water separator is connected to the evaporator;

[0008] The evaporator is connected to the condenser, and a drying filter is connected in series on the connecting pipeline;

[0009] The compressor and the evaporator are connected through a circulation pipe, and a pressure gauge is connected on the connecting pipe between the two;

[0010] The condenser is in communication with the compressor;

[0011] The curved pipe has a cross section that is divided into: a constricted portion, a U-shaped portion connected at both ends of the constricted portion, and a chamfered isosceles triangle portion connected to a side wall of the U-shaped portion;

[0012] The constriction portion is composed of two arc-shaped portions with adjacent outer arc tops;

[0013] The curved pipe has a water outlet and a water inlet, and a pipe connector is provided on the end thereof. The outlet of the pipe connector is located at the center of the bundled mouth portion.

[0014] Preferably, the chamfered isosceles triangle portion is located outside the curved pipe.

[0015] Preferably, a plurality of aluminum alloy plates arranged in a linear array are provided between adjacent surfaces of the curved pipe.

[0016] Preferably, the cross-section of the aluminum alloy plate is an M-shaped structure with rounded corners.

[0017] Preferably, both ends of the arc-shaped portion are in contact with the side edges of the aluminum alloy plate to form a cavity.

[0018] Preferably, a grid frame is fixedly installed on both sides of the curved pipe, and the grid frame includes vertical partitions composed of two vertical plates arranged in parallel, and a plurality of V-shaped members arranged in a linear array are provided between the two vertical plates.

[0019] Preferably, a C-shaped plate is provided between the vertical plates, the port of the C-shaped plate faces the curved pipe and is located between the two V-shaped members.

[0020] In the above technical solution, the utility model provides an evaporator of a refrigerated dryer, which has the following beneficial effects: liquid enters from the bundle mouth, and because the bundle mouth is composed of two arc-shaped parts with two outer arc tops arranged adjacent to each other, three streams will be formed when entering the bundle mouth, namely the first stream flowing along the bundle mouth, the second stream and the third stream located at the U-shaped part and the chamfered isosceles triangle part on both sides, and the stream flowing at the bundle mouth has a fast flow rate. Due to the flow rate difference, the second and third streams will be close to the first stream, thereby causing replacement to occur, so as to accelerate the temperature replacement rate of the liquid from the center to both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1A schematic diagram of the structure of a freeze dryer provided in an embodiment of the utility model

[0023] Figure 2 A schematic structural diagram of an evaporator provided in an embodiment of the present utility model;

[0024] Figure 3 The embodiment of the present invention provides Figure 1 Schematic diagram of the explosion structure;

[0025] Figure 4 A schematic structural diagram of a curved pipe provided in an embodiment of the present utility model;

[0026] Figure 5 A schematic structural diagram of a grid frame provided in an embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of a curved pipe fitting provided in an embodiment of the present utility model.

[0028] Description of reference numerals:

[0029] 1. Curved pipe fittings; 11. Beveled end; 12. U-shaped portion; 13. Chamfered isosceles triangle portion; 2. Pipe joints; 3. Aluminum alloy plates; 4. Grid frame; 41. Vertical plate; 42. V-shaped member; 43. C-shaped plate; 100. Cavity; 300. Air-water separator; 301. Precooling regenerator; 302. Precooler; 303. Circulation pipe; 304. Compressor; 305. Dry filter; 306. Condenser; 307. Pressure gauge. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 As shown in FIG6 , an evaporator of a refrigerated dryer includes a gas-water separator 300, a pre-cooling regenerator 301, a pre-cooler 302, a circulation pipe 303, a compressor 304, a drying filter 305, a condenser 306, a pressure gauge 307, and an evaporator, wherein:

[0032] The precooler 302 is connected to the precooling regenerator 301, the precooling regenerator 301 is connected to the gas-water separator 300, and the gas-water separator 300 is connected to the evaporator;

[0033] The evaporator is connected to the condenser 306, and the connecting pipe is connected in series with a drying filter 305;

[0034] The compressor 304 is connected to the evaporator through a circulation pipe 303, and a pressure gauge 307 is connected to the connecting pipe between the two;

[0035] The condenser 306 is in communication with the compressor 304 .

[0036] A compressed air inlet 14 is provided at one end of the precooler 8, and a delivery pipe 18 is fixedly installed at the other end of the precooler 8. The compressed air inlet 14 is used for inputting air, and the delivery pipe 18 is used for delivering air.

[0037] A dry air outlet is fixedly mounted on the outside of the pre-cooling regenerator 301. The bottom of the pre-cooling regenerator 301 is connected to an air-water separator 300, which is used to collect and reflux air. The bottom of the air-water separator 300 is connected to a drain pipe, with an automatic drain installed above it. The air-water separator collects water, while the automatic drain drains it away. One end of the circulation pipe 303 is connected to a liquid reservoir, which is connected to the compressor 304. The circulation pipe of the compressor 304 is connected to a dry filter 305, which effectively removes moisture from the circulation pipe 303. The liquid passing through the condenser 306 is cooled as much as possible and transferred to the evaporator, from where it returns to the compressor 304.

[0038] Furthermore, the evaporator in the above embodiment includes a curved tube 1, the cross section of which is structurally divided into: a constricted portion 11, a U-shaped portion 12 located at both ends of the constricted portion 11 and connected to a side wall of the U-shaped portion 12, and a chamfered isosceles triangle portion 13 connected to one side wall of the U-shaped portion 12;

[0039] The constriction portion 11 is composed of two arc-shaped portions with adjacent outer arc tops;

[0040] The curved pipe fitting 1 has a water outlet and a water inlet, and a pipe connector 2 is provided on the ends thereof. The outlet of the pipe connector 2 is located at the center of the constriction portion 11 .

[0041] Specific, combined Figure 3 It can be seen that the chamfered isosceles triangle portion 13 is located outside the curved pipe 1. The curved pipe 1 is a copper pipe or a copper alloy pipe.

[0042] In the above technology, the liquid enters from the bundle mouth portion 11. Since the bundle mouth portion 11 is composed of two arc-shaped portions with adjacent outer arc tops, three streams will be formed when entering the bundle mouth portion 11, namely the first stream flowing along the bundle mouth portion 11, the second and third streams located at the U-shaped portion 12 and the chamfered isosceles triangle portion 13 on both sides, and the stream flowing at the bundle mouth portion 11 has a fast flow rate. Due to the flow rate difference, the second and third streams will be close to the first stream, thereby causing displacement to accelerate the temperature displacement rate of the liquid from the center to both sides.

[0043] As a further embodiment provided by the present invention, a plurality of aluminum alloy plates 3 are disposed in a linear array between adjacent surfaces of the curved pipe 1. The cross-section of the aluminum alloy plates 3 is an M-shaped structure with rounded corners. This increases the contact area between the plates, thereby rapidly absorbing heat from the curved pipe 1 and enabling heat exchange.

[0044] As another embodiment further provided by the present invention, both ends of the arc portion contact the side of the aluminum alloy plate 3 to form a cavity 100. Specifically, the presence of the cavity 100 increases the contact surface.

[0045] As another embodiment further provided by the present invention, a grid frame 4 is fixedly installed on both sides of the curved pipe fitting 1. The grid frame 4 includes vertical partitions composed of two parallel vertical plates 41. A plurality of V-shaped members 42 arranged in a linear array are provided between the two vertical plates 41.

[0046] A C-shaped plate 43 is further provided between the vertical plates 41 . The end of the C-shaped plate 43 faces the curved pipe 1 and is located between the two V-shaped members 42 .

[0047] Specifically, the heat exhaust fan in the embodiment is located on one side of the grille frame 4 , and because the grille frame 4 is designed to be overhead, the contact surface with the air is increased, thereby increasing the heat exchange on both sides of the curved pipe 1 .

[0048] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An evaporator of a freeze dryer, characterized in that: It includes a gas-water separator (300), a precooling regenerator (301), a precooler (302), a circulation pipe (303), a compressor (304), a drying filter (305), a condenser (306), a pressure gauge (307), and an evaporator, wherein: The precooler (302) is in communication with the precooling regenerator (301), the precooling regenerator (301) is in communication with the gas-water separator (300), and the gas-water separator (300) is in communication with the evaporator; The evaporator is connected to the condenser (306), and a drying filter (305) is connected in series on the connecting pipeline; The compressor (304) is connected to the evaporator via a circulation pipe (303), and a pressure gauge (307) is connected to the connecting pipe between the two. The condenser (306) is in communication with the compressor (304); The evaporator comprises: A curved pipe (1), the cross section of which is divided into: a constricted portion (11), a U-shaped portion (12) located at both ends of the constricted portion (11) and connected to each other, and a chamfered isosceles triangle portion (13) connected to a side wall of the U-shaped portion (12); The constriction portion (11) is composed of two arc-shaped portions with adjacent outer arc tops; The curved pipe fitting (1) has a water outlet and a water inlet, and a pipe joint (2) is provided on the end thereof, wherein the outlet of the pipe joint (2) is located at the center of the bundled opening (11).

2. The evaporator of a refrigerated dryer according to claim 1, characterized in that: The chamfered isosceles triangle portion (13) is located outside the curved pipe (1).

3. The evaporator of a refrigerated dryer according to claim 1, characterized in that: A plurality of aluminum alloy plates (3) arranged in a linear array are provided between adjacent surfaces of the curved pipe (1).

4. The evaporator of a refrigerated dryer according to claim 3, characterized in that: The cross section of the aluminum alloy plate (3) is an M-shaped structure with rounded corners.

5. The evaporator of a refrigerated dryer according to claim 1, characterized in that: Both ends of the arc-shaped portion are in contact with the side edges of the aluminum alloy plate (3) to form a cavity (100).

6. The evaporator of a refrigerated dryer according to claim 1, characterized in that: A grid frame (4) is fixedly mounted on both sides of the curved pipe member (1), and the grid frame (4) comprises vertical partitions composed of two vertical plates (41) arranged in parallel, and a plurality of V-shaped members (42) arranged in a linear array are provided between the two vertical plates (41).

7. The evaporator of a refrigerated dryer according to claim 6, characterized in that: A C-shaped plate member (43) is further provided between the vertical plates (41), with an end of the C-shaped plate member (43) facing the curved pipe member (1) and located between the two V-shaped members (42).

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