A new cross-flow heat exchanger for cold and dry machine

Abstract

The present invention provides a novel cross-flow cold and dry machine heat exchanger, comprising an air inlet component, a core body, a gas-liquid separation component and an air outlet component, and a refrigerant inlet and outlet component, wherein the core body is located in the middle of the entire heat exchanger, the air inlet part is located above the core body, and the air inlet component and the air outlet component are respectively connected to the core body; the air inlet component comprises an inlet pipe and an inlet air flow distribution chamber, an inlet air flow distribution chamber is provided below the inlet pipe, and the inlet air flow distribution chamber is connected to the core body below; the present invention is used to solve the problems of large material consumption, high cost, and low heat exchange efficiency in the conventional cross-flow cold and dry machine heat exchanger in the prior art.

Description

Technical Field

[0001] The invention relates to the field of compressed air dryers, and in particular to a novel cross-flow cold and dryer heat exchanger. Background Art

[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a higher temperature fluid to a lower temperature fluid, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization. Plate heat exchangers occupy a dominant position among all heat exchangers, but the heat exchange efficiency of existing cross-flow cold and dry heat exchangers is not high. In order to achieve the required heat exchange, the heat exchange area must be increased, so the material consumption is relatively large, so its cost is also relatively high. Especially in the application field of large-flow cold and dry heat exchangers, its material cost is much greater than that of counter-flow heat exchangers, so it is rarely used in this field. Summary of the invention

[0003] The present invention provides a novel cross-flow cold and dry machine heat exchanger to solve the problems in the prior art that the traditional cross-flow cold and dry machine heat exchanger has a large amount of materials, resulting in high cost and low heat exchange efficiency.

[0004] In order to solve the above technical problems, the present invention provides a novel cross-flow cold dryer heat exchanger, comprising an air inlet component, a core, a gas-liquid separation component, an air outlet component, and a refrigerant inlet and outlet component, wherein the core is located in the middle of the entire heat exchanger, the air inlet portion is located above the core, and the air inlet component and the air outlet component are respectively connected to the core;

[0005] The air inlet component comprises an inlet pipe and an inlet airflow distribution chamber. The inlet airflow distribution chamber is provided below the inlet pipe, and the inlet airflow distribution chamber is connected to the core body below.

[0006] The core body comprises a hot flow layer and a cold flow layer; both the hot flow layer and the cold flow layer are multi-layer structures, the hot flow layer and the cold flow layer are arranged alternately and spaced from each other and separated by a partition, the hot flow layer is divided into two regions: region A and region B, both regions A and region B are airflow channels, region A is upstream of the airflow, and the heat exchange fins in region A are arranged in a longitudinal airflow; region B is downstream of the airflow, and the heat exchange fins in region B are arranged in a transverse airflow; the cold flow layer is divided into two regions: region C and region D, region C is an airflow channel, and region D is a refrigerant fluid channel, and both regions C and D are arranged in a longitudinal airflow;

[0007] The gas-liquid separation component includes a water retaining mesh, a water retaining plate, a drain port, and a baffle. The baffle is located at the outlet of the air flow channel below the core body, the water retaining plate is located at the bottom of the gas-liquid separation component, and the water retaining plate is connected to the drain port below. The water retaining mesh is located beside the core body and is used to separate the remaining liquid water droplets in the air flow.

[0008] The refrigerant inlet and outlet components include a refrigerant inlet pipe, a refrigerant liquid flow distribution chamber, a flow equalizing plate, a refrigerant air flow uniform flow chamber, a refrigerant air flow focusing chamber, and a refrigerant outlet pipe; the refrigerant inlet pipe and the refrigerant outlet pipe are connected to the cold flow layer of the core, the refrigerant liquid flow distribution chamber is connected to the refrigerant inlet pipe, a flow equalizing plate is arranged in the refrigerant liquid flow distribution chamber, the flow equalizing plate is a flat plate, the function of the refrigerant liquid flow distribution chamber and the flow equalizing plate is to uniformly distribute the refrigerant liquid fluid entering the core, one or more rows of large holes are evenly arranged on the surface of the refrigerant air flow uniform flow chamber, the refrigerant air flow uniform flow chamber is connected to the cold flow layer of the core, the refrigerant air flow focusing chamber is connected to the refrigerant air flow uniform flow chamber, the refrigerant air flow focusing chamber gathers the refrigerant gaseous fluid flowing through the refrigerant air flow uniform flow chamber, and flows out through the refrigerant outlet pipe;

[0009] The air outlet component comprises an outlet airflow focusing chamber and an outlet pipe. The outlet airflow focusing chamber is connected to one side of the core body, and the outlet pipe is connected to the outlet airflow focusing chamber.

[0010] The core body also includes a cover plate, which is arranged outside the core body and is close to the partition plate. The number of layers of the hot flow layer is one more than the number of layers of the cold flow layer.

[0011] The gas-liquid separation component also includes an outer reinforcing plate, a rolled plate, an inner reinforcing plate, longitudinal reinforcing ribs, transverse reinforcing ribs, and a rolled head cover plate. The rolled plate and the rolled head cover plates on both sides constitute the structural space of the gas-liquid separation component. The longitudinal reinforcing ribs and transverse reinforcing ribs are used to strengthen the structural strength in the vertical direction, and the outer reinforcing plate and the inner reinforcing plate are used to strengthen the structural strength in the planar direction.

[0012] Beneficial effects brought by the present invention: The present invention provides a new cross-flow cold dryer heat exchanger, which not only greatly reduces the material cost of the heat exchanger, but is also more suitable for the application in the field of large-flow cold dryer heat exchangers. On the one hand, the present invention has a simple structural design and a reasonable structure, which reduces the cost of the heat exchanger; on the other hand, the baffle is arranged in the upstream airflow, and its function is to change the direction of the airflow, which plays a key role in the primary separation of gas and liquid water droplets; the water retaining mesh is arranged in the downstream airflow, and its function is to condense the liquid water droplets in the airflow, which plays a key role in the secondary separation of gas and liquid water droplets; the function of the water retaining plate is to gather the liquid water at the bottom of the gas-liquid separation component and discharge it from the heat exchanger through the drain port, so as to prevent the liquid water from being blown away by the airflow and carried away again, thereby avoiding affecting the gas-water separation effect and improving the working efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view of a novel cross-flow cold and dry machine heat exchanger according to an embodiment of the present invention.

[0014] Figure 2 It is a front view of a novel cross-flow cold and dry machine heat exchanger according to an embodiment of the present invention.

[0015] Figure 3 It is a structural schematic diagram of a novel cross-flow cold and dry machine heat exchanger core according to an embodiment of the present invention.

[0016] Figure 4 It is a schematic structural diagram of the heat flow layer of a novel cross-flow cold and dryer heat exchanger according to an embodiment of the present invention.

[0017] Figure 5 It is a structural schematic diagram of the cold flow layer of the novel cross-flow cold and dryer heat exchanger according to an embodiment of the present invention.

[0018] Figure 6 It is a structural schematic diagram of the longitudinal airflow of a novel cross-flow cold and dryer heat exchanger according to an embodiment of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the transverse airflow of a novel cross-flow cold and dryer heat exchanger according to an embodiment of the present invention.

[0020] Figure 8 It is a structural schematic diagram of a new cross-flow cold and dry machine heat exchanger flow equalizing plate according to an embodiment of the present invention.

[0021] Fig. 9 It is a structural schematic diagram of a refrigerant airflow uniform flow chamber of a novel cross-flow cold and dry machine heat exchanger according to an embodiment of the present invention.

[0022] Among them, 01-air inlet component, 02-core body, 03-gas-liquid separation component, 04-air outlet component, 05-refrigerant inlet and outlet component, 1-inlet pipe, 2-inlet air flow distribution chamber, 3-cover plate, 4-partition, 5-hot flow layer, 6-cold flow layer, 7-outer reinforcement plate, 8-rolled plate, 9-inner reinforcement plate, 10-longitudinal reinforcement rib, 11-water retaining mesh, 12-transverse reinforcement rib, 13-water retaining plate, 14-drain outlet, 15-baffle, 16-rolled head cover plate, 17-refrigerant inlet pipe, 18-refrigerant liquid flow distribution chamber, 19-flow equalizing plate, 20-refrigerant air flow uniform flow chamber, 21-refrigerant air flow focusing chamber, 22-refrigerant outlet pipe, 23-outlet air flow focusing chamber, 24-outlet pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1-2 As shown, the heat exchanger of the present invention is composed of five major parts: an air inlet part 01, a core 02, a gas-liquid separation part 03, an air outlet part 04, and a refrigerant inlet and outlet part 05.

[0025] (I) Core

[0026] like Figure 3 As shown, the core body is composed of a cover plate 3, a partition plate 4, a hot flow layer 5 and a cold flow layer 6. The number of layers of the hot flow layer 5 is one more than the number of layers of the cold flow layer 6.

[0027] like Figure 4-7 The heat flow layer 5 shown is divided into two regions A and B. Both regions A and B are airflow channels. Region A is upstream of the airflow, and the heat exchange fins are arranged in a longitudinal airflow; region B is downstream of the airflow, and the heat exchange fins are arranged in a transverse airflow.

[0028] The cold flow layer 6 is divided into two areas C and D. Area C is an air flow channel, and area D is a refrigerant fluid channel. Both C and D are arranged in a longitudinal air flow.

[0029] The length relationship between the A, B, C, and D regions satisfies the following formula:

[0030] A+B=C+D

[0031] B≥D

[0032] C≥A

[0033] (ii) Gas-liquid separation components

[0034] like Figure 1 As shown, the gas-liquid separation component is composed of an outer reinforcing plate 7, a rolled plate 8, an inner reinforcing plate 9, a longitudinal reinforcing rib 10, a water retaining mesh 11, a transverse reinforcing rib 12, a water retaining plate 13, a drain port 14, a baffle 15, and a rolled head cover plate 16.

[0035] The rolled plate 8 and the rolled head cover plates 16 on both sides constitute the structural space of the gas-liquid separation component. The longitudinal reinforcement ribs 10 and the transverse reinforcement ribs 12 are used to strengthen the structural strength in the direction perpendicular to the drawing. The outer reinforcement plate 7 and the inner reinforcement plate 9 are used to strengthen the structural strength in the plane direction of the drawing.

[0036] The baffle 15 is arranged in the upstream airflow, and its function is to change the direction of the airflow, which plays a key role in the primary separation of gas and liquid water droplets; the water retaining mesh 11 is arranged in the downstream airflow, and its function is to condense the liquid water droplets in the airflow, which plays a key role in the secondary separation of gas and liquid water droplets; the function of the water retaining plate 13 is to gather the liquid water at the bottom of the gas-liquid separation component and discharge it from the heat exchanger through the drain port 14, so as to prevent the liquid water from being blown away by the airflow and carried away again, thereby affecting the gas-water separation effect.

[0037] (III) Refrigerant inlet and outlet components

[0038] like Figure 1 , Figure 8-9 As shown, the refrigerant inlet and outlet components are composed of a refrigerant inlet pipe 17, a refrigerant liquid flow distribution chamber 18, a flow equalizing plate 19, a refrigerant air flow uniform flow chamber 20, a refrigerant air flow focusing chamber 21, and a refrigerant outlet pipe 22.

[0039] The function of the refrigerant liquid flow distribution chamber 18 and the flow equalizing plate 19 is to evenly distribute the refrigerant liquid fluid entering the core. The flow equalizing plate 19 is a flat plate with multiple rows of evenly arranged small holes. The refrigerant liquid flow distribution chamber 18 is connected to the refrigerant inlet pipe 17.

[0040] The function of the refrigerant airflow uniform flow cavity 20 and the refrigerant airflow focusing cavity 21 is to make the refrigerant gaseous fluid flowing out of the core uniform. One or more rows of large holes are evenly arranged on the surface of the refrigerant airflow uniform flow cavity 20. The refrigerant airflow focusing cavity 21 gathers the refrigerant gaseous fluid flowing through the refrigerant airflow uniform flow cavity 20 and flows out through the refrigerant outlet pipe 22.

[0041] In this embodiment, the operation process of compressed air in the heat exchanger is:

[0042] The hot and humid air flow enters the heat exchanger through the inlet pipe 1 in the inlet component 01, and enters the core 02 after being evenly distributed by the inlet air flow distribution chamber 2.

[0043] After entering the core 02 , the hot and humid airflow first enters the hot flow layer 5 , exchanges heat with the cold and dry airflow and refrigerant fluid in the cold flow layer 6 , and then enters the gas-liquid separation component 03 after being cooled.

[0044] After entering the gas-liquid separation component 03, the cooled airflow carrying the condensed liquid water droplets hits the baffle 15, and the airflow is forced to turn and then flow to the back channel along the airflow channel. In this process, due to the double effect of centrifugal force and gravity, the liquid water droplets leave the airflow and fall downward, gather at the bottom of the gas-liquid separation component 03, and gather to the drain port 14 under the action of the water retaining plate 13, and then are discharged from the heat exchanger. The airflow flowing to the back channel passes through the water retaining screen 11, and the remaining liquid water droplets in the airflow are separated under the action of the water retaining screen. The liquid water droplets on the water retaining screen continue to condense and grow, and finally fall downward under the action of gravity, gather at the bottom of the gas-liquid separation component 03, and gather to the drain port 14 under the action of the water retaining plate 13, and then are discharged from the heat exchanger. The airflow passing through the water retaining screen 11 leaves the gas-liquid separation component 03 and enters the core 02 again.

[0045] The cold dry airflow with moisture separated enters the airflow channel in the cold flow layer 6 of the core 02 , exchanges heat with the hot and humid airflow that has just entered the hot flow layer 5 of the core 02 , and then flows out of the core 02 and enters the air outlet component 04 .

[0046] The gas entering the air outlet component 04 is gathered in the outlet air flow focusing chamber 23 and then flows out of the heat exchanger through the outlet pipe 24 .

[0047] The refrigerant fluid in the cold flow layer 6 enters and exits through the refrigerant inlet and outlet component 05. The refrigerant fluid first enters the refrigerant liquid flow distribution chamber 18 through the refrigerant inlet pipe 17, flows through the flow equalizing plate 19 and enters the refrigerant channel in the cold flow layer 6, exchanges heat with the hot and humid air in the hot flow layer 5, flows out of the cold flow layer 6, enters the refrigerant airflow equalizing chamber 20, and then enters the refrigerant airflow gathering chamber 21, and flows out through the refrigerant outlet pipe 22.

[0048] In summary, the present invention provides a novel cross-flow cold and dry machine heat exchanger, which not only greatly reduces the material cost of the heat exchanger, but is also more suitable for application in the field of large-flow cold and dry machine heat exchangers.

[0049] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A novel cross-flow cold dryer heat exchanger, comprising an air inlet component (01), a core (02), a gas-liquid separation component (03), an air outlet component (04), and a refrigerant inlet and outlet component (05), characterized in that: The core is located in the middle of the entire heat exchanger, the air inlet component is located above the core, and the air inlet component and the air outlet component are respectively connected to the core; The air inlet component comprises an inlet pipe (1) and an inlet airflow distribution chamber (2); the inlet airflow distribution chamber (2) is provided below the inlet pipe (1), and the inlet airflow distribution chamber (2) is connected to the core body below; The core body comprises a hot flow layer (5) and a cold flow layer (6); the hot flow layer (5) and the cold flow layer (6) are both multi-layer structures, the hot flow layer (5) and the cold flow layer (6) are arranged in an interlaced manner and separated by a partition (4) in the middle of the hot flow layer (5), the hot flow layer (5) is divided into two areas: area A and area B, the areas A and B are both airflow channels, the area A is upstream of the airflow, and the heat exchange fins in the area A are arranged in a longitudinal airflow; the area B is downstream of the airflow, and the heat exchange fins in the area B are arranged in a transverse airflow; the cold flow layer (6) is divided into two areas: area C and area D, the area C is an airflow channel, and the area D is a refrigerant fluid channel, and both areas C and D are arranged in a longitudinal airflow; The gas-liquid separation component comprises a water retaining mesh (11), a water retaining plate (13), a water outlet (14), and a baffle (15); the baffle (15) is located at the outlet of the air flow channel below the core body; the water retaining plate (13) is located at the bottom of the gas-liquid separation component; the water retaining plate (13) is connected to the water outlet below; the water retaining mesh (11) is located beside the core body and is used to separate the remaining liquid water droplets in the air flow; The refrigerant inlet and outlet components include a refrigerant inlet pipe (17), a refrigerant liquid flow distribution chamber (18), a flow equalizing plate (19), a refrigerant airflow equalizing chamber (20), a refrigerant airflow focusing chamber (21), and a refrigerant outlet pipe (22); the refrigerant inlet pipe (17) and the refrigerant outlet pipe (22) are in communication with the cold flow layer of the core body, the refrigerant liquid flow distribution chamber (18) is in communication with the refrigerant inlet pipe (17), a flow equalizing plate (19) is arranged in the refrigerant liquid flow distribution chamber (18), and the flow equalizing plate (19) The refrigerant liquid flow distribution cavity (18) and the flow equalizing plate (19) are used to evenly distribute the refrigerant liquid fluid entering the core body. One or more rows of large holes are evenly arranged on the surface of the refrigerant airflow equalizing cavity (20). The refrigerant airflow equalizing cavity (20) is connected to the cold flow layer of the core body. The refrigerant airflow gathering cavity (21) is connected to the refrigerant airflow equalizing cavity (20). The refrigerant airflow gathering cavity (21) gathers the refrigerant gaseous fluid flowing through the refrigerant airflow equalizing cavity (20) and flows out through the refrigerant outlet pipe (22). The air outlet component comprises an outlet airflow focusing chamber (23) and an outlet pipe (24); the outlet airflow focusing chamber (23) is connected to one side of the core body, and the outlet pipe (24) is connected to the outlet airflow focusing chamber (23).

2. The novel cross-flow cold and dry heat exchanger according to claim 1 is characterized in that: The core body further comprises a cover plate (3), which is arranged outside the core body and is arranged close to the partition plate (4). The number of layers of the hot flow layer (5) is one more than the number of layers of the cold flow layer (6).

3. The novel cross-flow cold and dry heat exchanger according to claim 1 is characterized in that: The gas-liquid separation component also includes an outer reinforcing plate (7), a rolled plate (8), an inner reinforcing plate (9), longitudinal reinforcing ribs (10), transverse reinforcing ribs (12), and a rolled head cover plate (16); the rolled plate (8) and the rolled head cover plates (16) on both sides constitute the structural space of the gas-liquid separation component; the longitudinal reinforcing ribs (10) and the transverse reinforcing ribs (12) are used to strengthen the structural strength in the vertical direction; the outer reinforcing plate (7) and the inner reinforcing plate (9) are used to strengthen the structural strength in the planar direction.

Images