A heat exchanger antifreeze method and air drainage device thereof

Abstract

The present invention discloses a heat exchanger antifreeze method and heat exchanger air drainage device. The method comprises closing the heat exchanger's water inlet and outlet valves; opening the drainage valve to drain water from the heat exchanger; using the heat exchanger air drainage device to drain all residual water inside the heat exchanger; checking that all pipes, pumps, and other related equipment are drained; and adding antifreeze liquid to the heat exchanger. This method can prevent damage or rupture of pipes and the interior of the heat exchanger when the heat exchanger stops working in winter, while maintaining the antifreeze effect of the antifreeze liquid, thereby extending the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a heat exchanger antifreeze method and an air drainage device thereof. Background Art

[0002] When a heat exchanger stops working in the winter, draining the water from it is essential. This is because when the temperature drops below freezing, water freezes into ice, causing damage or rupture to the pipes and interior of the heat exchanger. Furthermore, the water contains impurities and oxides, which can corrode the metal components inside the heat exchanger, shortening the life of the equipment. If the water is not drained before adding antifreeze, these impurities and oxides will mix with the antifreeze and gradually concentrate as the water evaporates, thus affecting the effectiveness of the antifreeze. Therefore, when antifreezing a heat exchanger in the winter, it is necessary to drain the water first and ensure that the pipes and interior of the heat exchanger are thoroughly dry before adding antifreeze. To address the above issues, the present invention innovatively designs a heat exchanger antifreeze method and an air drainage device. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above problems in the prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a method for preventing freezing of a heat exchanger.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: close the water inlet and outlet valves of the heat exchanger; open the drain valve to drain water from the heat exchanger; use the heat exchanger air drainage device to drain all residual water inside it; check whether all pipes, pumps and other related equipment have been drained; and add antifreeze to the heat exchanger.

[0007] As a preferred solution of the heat exchanger antifreeze method of the present invention, the step of opening the drain valve to remove water from the heat exchanger includes turning off the power supply, opening the waterproof valve, and allowing water to flow out of the heat exchanger.

[0008] As a preferred solution of the heat exchanger antifreeze method described in the present invention, the heat exchanger air drainage device is used to drain all the residual moisture inside it, including, if the water is difficult to drain, the heat exchanger air drainage device is used to generate compressed air to clear the residual moisture in the pipeline.

[0009] As a preferred embodiment of the heat exchanger antifreeze method of the present invention, the step of adding antifreeze liquid to the heat exchanger includes determining the required amount and proportion, opening the water valve of the heat exchanger, slowly adding the antifreeze liquid to the heat exchanger until the liquid level reaches the highest point, and then closing the water inlet valve.

[0010] The beneficial effects of the present invention are as follows: when the heat exchanger stops working in winter, the pipes and the interior of the heat exchanger can be prevented from being damaged or bursting, and the antifreeze effect of the antifreeze liquid is not affected, thereby extending the service life of the equipment.

[0011] In actual use, it is difficult to completely drain all the water from the heat exchanger.

[0012] To solve the above technical problems, the present invention further provides the following technical solution: a compression assembly comprising a heat exchanger, a compression cylinder disposed on one side of the heat exchanger, and an air cylinder disposed on one side of the compression cylinder. A release assembly comprising a first rotating plate disposed on one side of the heat exchanger, a second rotating plate rotatably disposed on one side of the first rotating plate, a telescopic rod connected to the second rotating plate, and a handle disposed on one side of the telescopic rod.

[0013] As a preferred solution of the air drainage device of the heat exchanger described in the present invention, the air cylinder includes a air cylinder wall arranged on one side of the compression cylinder, an air vent arranged on the air cylinder wall, a piston arranged on the inner side of the air cylinder wall, an air inlet plate arranged on the outer side of the piston, an air outlet arranged at one end of the air cylinder wall, and an air outlet plate arranged in the air outlet.

[0014] As a preferred solution of the heat exchanger air drainage device of the present invention, the first rotating plate includes a first special-shaped plate arranged on one side of the heat exchanger and a first limiting plate arranged on the first special-shaped plate.

[0015] As a preferred solution of the heat exchanger air drainage device of the present invention, the second rotating plate includes a second special-shaped plate rotatably arranged on one side of the first rotating plate, and a second limiting plate arranged on the second special-shaped plate.

[0016] As a preferred solution of the heat exchanger air drainage device described in the present invention, it further includes a coaxial mechanism, including a shell, a chassis connected to the shell, an inlet pipe arranged on one side of the chassis, an outlet pipe connected to one side of the inlet pipe, a trigger tube arranged on one side of the inlet pipe, a sliding groove opened on the shell, a limiting protrusion arranged in the sliding groove, a rotating groove arranged on the side of the shell, and a transmission assembly arranged on the inner side of the shell.

[0017] As a preferred solution of the heat exchanger air drainage device described in the present invention, it also includes a trigger mechanism, including a transmission component connected to the transmission component, an extension component connected to one side of the transmission component, and a conduction component connected to one side of the extension component.

[0018] The invention has the following beneficial effects: The compressed air generated removes residual moisture from the pipes, eliminating the need for multiple trial connections or water filling tests, allowing the pipe connection process to be completed quickly and accurately, significantly improving work efficiency and saving time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the air drainage device of the heat exchanger of the present invention.

[0021] Figure 2 This is a top view of the overall structure of the air drainage device of the heat exchanger of the present invention.

[0022] Figure 3 This is an enlarged view of the release structure of the air drainage device of the heat exchanger of the present invention.

[0023] Figure 4 This is a schematic structural diagram of the first rotating plate described in the air drainage device of the heat exchanger of the present invention.

[0024] Figure 5 This is a schematic structural diagram of the compression assembly described in the heat exchanger air drainage device of the present invention.

[0025] Figure 6 This is a schematic structural diagram of the air intake plate described in the air drainage device of the heat exchanger of the present invention.

[0026] Figure 7 This is a schematic diagram of the coaxial structure of the air drainage device of the heat exchanger of the present invention.

[0027] Figure 8 This is a cross-sectional view of the coaxial structure of the air drainage device of the heat exchanger of the present invention.

[0028] Figure 9 This is a schematic diagram of the trigger structure of the heat exchanger air drainage device of the present invention.

[0029] Figure 10 This is a schematic diagram of the shell structure of the air drainage device of the heat exchanger of the present invention.

[0030] Figure 11 This is a side view of the shell structure of the heat exchanger air drainage device of the present invention.

[0031] Figure 12 This is a schematic diagram of the chassis structure of the heat exchanger air drainage device of the present invention.

[0032] Figure 13 This is a schematic diagram of the coaxial structure and trigger structure of the heat exchanger air drainage device of the present invention.

[0033] Figure 14 This is a schematic diagram of the sealing member of the heat exchanger air drainage device of the present invention.

[0034] Figure 15 This is a schematic diagram of the arc-shaped mounting block described in the heat exchanger air drainage device of the present invention.

[0035] Figure 16 This is an enlarged view of the seal described in the air drainage device of the heat exchanger of the present invention.

[0036] Figure 17 This is a schematic diagram of the shaft gear structure of the heat exchanger air drainage device of the present invention.

[0037] Figure 18 This is a side view of the shaft gear structure of the heat exchanger air drainage device of the present invention.

[0038] Figure 19 Schematic diagram of the concentric members of the heat exchanger air drainage device of the present invention.

[0039] Figure 20 This is a top view of the concentric members of the air drainage device for the heat exchanger of the present invention.

[0040] Figure 21 This is a side view of the concentric members of the heat exchanger air drainage device of the present invention. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0044] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0045] Example 1

[0046] This embodiment provides a heat exchanger antifreeze method and an air drainage device thereof, including closing the water inlet and outlet valves of the heat exchanger; opening the drainage valve to drain water from the heat exchanger; using the heat exchanger air drainage device to drain all residual water inside the heat exchanger; checking whether all pipes, pumps and other related equipment have been drained; and adding antifreeze liquid to the heat exchanger.

[0047] Specifically, opening the drain valve to drain water from the heat exchanger includes turning off the power supply and opening the waterproof valve to allow water to flow out of the heat exchanger. In this embodiment, the heat exchanger has multiple water inlets, and all of the water inlets should be opened until the water is completely drained.

[0048] Furthermore, the heat exchanger air drainage device is used to drain all residual moisture inside it, including when water is difficult to drain, the heat exchanger air drainage device is used to generate compressed air to clear the residual moisture in the pipeline. In this embodiment, the pressure of the compressed air is controlled to prevent the pressure from being too high to damage the equipment.

[0049] Furthermore, adding the antifreeze solution to the heat exchanger includes determining the desired amount and proportion, opening the water valve of the heat exchanger, slowly adding the antifreeze solution to the heat exchanger until the liquid level reaches a maximum point, and then closing the water inlet valve. In this embodiment, the concentration of the antifreeze solution should generally be between 30% and 50%.

[0050] Example 2

[0051] Reference Figure 2This embodiment differs from the first embodiment in that it provides a heat exchanger air drainage device, comprising a compression assembly 100 including a heat exchanger body 101, a compression cylinder 102 disposed on one side of the heat exchanger body 101, and an air cylinder 103 disposed on one side of the compression cylinder 102. A release assembly 200 comprises a first rotating plate 203 disposed on one side of the heat exchanger body 101, a second rotating plate 204 rotatably disposed on one side of the first rotating plate 203, a telescopic rod 202 connected to the second rotating plate 204, and a handle 201 disposed on one side of the telescopic rod 202. In this embodiment, the air cylinder 103 is used to pressurize the compression cylinder 102. When the air pressure in the compression cylinder 102 reaches an appropriate pressure, the handle 201 is quickly rotated. The handle 201 drives the second rotating plate 204 to rotate via the telescopic rod 202. After the second rotating plate 204 rotates, a gap is formed between the second rotating plate 204 and the first rotating plate 203. High-pressure air passes through this gap to discharge water remaining in the heat exchanger.

[0052] Specifically, the air cylinder 103 includes an air cylinder wall 103a provided on one side of the compression cylinder 102, an air vent 103b provided on the air cylinder wall 103a, a piston 103c provided on the inner side of the air cylinder wall 103a, an air inlet plate 103d provided on the outer side of the piston 103c, an air outlet 103e provided at one end of the air cylinder wall 103a, and an air outlet plate 103f provided in the air outlet 103e. In this embodiment, the air cylinder wall 103a is fixedly provided on the air inlet of the compression cylinder 102, the piston 103c is connected to the handle 201, and when the piston 103c moves, the air inlet plate 103d connected to the piston 103c is driven to open and close. When compressing air, the air inlet plate 103d is closed, and when absorbing air, the air inlet plate 103d is opened to absorb external air.

[0053] Furthermore, the first rotating plate 203 includes a first special-shaped plate 203 a provided on one side of the heat exchanger body 101 , and a first limiting plate 203 b provided on the first special-shaped plate 203 a .

[0054] Furthermore, the second rotating plate 204 includes a second shaped plate 204a rotatably mounted on one side of the first rotating plate 203, and a second limiting plate 204b mounted on the second shaped plate 204a. In this embodiment, the rotation of the second rotating plate 204 forms a gap between the first and second rotating plates 204, allowing air to circulate. When the gap is formed, the second limiting plate 204b contacts the first limiting plate 203b, driving the first limiting plate 203b to rotate. The first limiting plate 203b is then fixed to the second shaped plate 204a, thereby driving the second shaped plate 204a to rotate together.

[0055] The rest of the structure is the same as that of Example 1.

[0056] Operation process: Use the air cylinder 103 to press the compression cylinder 102. When the air pressure in the compression cylinder 102 reaches the appropriate pressure, quickly rotate the handle 201. The handle 201 drives the second rotating plate 204 to rotate through the telescopic rod 202. After the second rotating plate 204 rotates, a gap is formed with the first rotating plate 203. High-pressure air is discharged through this gap to discharge the water remaining in the heat exchanger.

[0057] Example 3

[0058] Reference Figure 2 This embodiment is different from the above embodiments in that it also includes a concentric mechanism 300, including a shell 301, a base 302 connected to the shell 301, an inlet duct 303 arranged on one side of the base 302, an outlet duct 304 connected to one side of the inlet duct 303, a triggering tube 305 arranged on one side of the inlet duct 303, a sliding groove 306 opened on the shell 301, a limiting boss 307 arranged in the sliding groove 306, a rotating groove 308 arranged on the side of the shell 301, and a transmission component 309 arranged on the inner side of the shell 301.

[0059] Specifically, the triggering mechanism 400 includes a transmission component 401 connected to the transmission component 309, an extension component 402 connected to one side of the transmission component 401, and a guide component 403 connected to one side of the extension component 402. In this embodiment, one end of the inlet conduit 303 is connected to the outlet conduit 304, and the other end of the inlet conduit 303 is connected to the triggering tube 305. Due to the action of the guide component 403 disposed in the triggering tube 305, the fluid cannot enter the inlet conduit 303. The transmission component 309 is rotated to fix the outlet conduit 304 and the pipe connected to the outlet conduit 304. The transmission component 309 drives the extension component 402 to contact the guide component 403. The guide component 403 moves, allowing the fluid to pass through the guide component 403 and enter the outlet conduit 304. This allows for rapid installation of the pipe and subsequent water filling test.

[0060] Specifically, the transmission assembly 309 includes a rotating gear 309a rotatably disposed within the rotating groove 308, a helical toothed disc 309b rotatably disposed within the housing 301, a vortex groove 309c disposed on one side of the helical toothed disc 309b, and a concentric member 309d slidably disposed within the sliding groove 306. The rotating gear 309a meshes with the helical toothed disc 309b. In this embodiment, the rotating gear 309a is fixedly connected to a nut, making it easier to rotate. The rotation of the rotating gear 309a drives the helical toothed disc 309b to rotate, which in turn drives the vortex groove 309c fixed to the helical toothed disc 309b to rotate. The rotation of the vortex groove 309c thereby drives the concentric member 309d to move up and down within the sliding groove 306.

[0061] Furthermore, the concentric member 309d includes a concentric slider 309d-1 slidably disposed within the slide groove 306, a concentric through groove 309d-2 defined within the concentric slider 309d-1, a guide slide groove 309d-3 defined at the bottom of the concentric slider 309d-1, a guide protrusion 309d-4 slidably disposed within the guide groove 402d, and a contraction member 309d-5 disposed within the concentric through groove 309d-2. The guide protrusion 309d-4 interferes with the vortex groove 309c. In this embodiment, when the connecting tube 401c-3 is connected, the vortex groove 309c cooperates with the guide protrusion 309d-4, and the rotating gear 309a is rotated, causing the concentric slider 309d-1 to move toward the center within the slide groove 306.

[0062] Furthermore, the retraction member 309d-5 includes a V-shaped groove 309d-5a opened on the side of the concentric slider 309d-1, an extrusion block 309d-5b slidably set in the concentric through groove 309d-2, a retraction spring 309d-5c set between the extrusion block 309d-5b and the concentric through groove 309d-2, and a support rod 309d-5d; the extrusion block 309d-5b is connected to the guide protrusion 309d-4 through the support rod 309d-5d. In this embodiment, when the concentric slider 309d-1 moves toward the center, the extrusion block 309d-5b is pressed against the pipe to be connected, and the slide rod disposed in the V-shaped groove 309d-5a slides, causing the extrusion block 309d-5b to move upward, causing the guide protrusion 309d-4 connected to the extrusion block 309d-5b via the support rod 309d-5d to move upward. At this time, the rotation of the vortex groove 309c cannot drive the concentric member 309d to move up and down within the sliding groove 306. Therefore, the rotation of the rotating gear 309a only acts on the transmission assembly 401.

[0063] Operation: Rotating gear 309a rotates helical gear plate 309b, which in turn rotates the vortex groove 309c fixed to helical gear plate 309b. Due to the interaction between vortex groove 309c and guide protrusion 309d-4, rotating gear 309a causes concentric slider 309d-1 to move toward the center within slide groove 306. As concentric slider 309d-1 moves toward the center, extrusion block 309d-5b presses against the pipe to be connected. The slide rod in V-groove 309d-5a slides, causing extrusion block 309d-5b to move upward, leading to upward movement of guide protrusion 309d-4, which is connected to extrusion block 309d-5b via support rod 309d-5d. At this point, rotating gear 309a only affects transmission assembly 401. This allows for a water inflow test after pipeline installation.

[0064] The transmission assembly 401 includes an inner gear disc 401a disposed inside the helical gear disc 309b, a transmission gear 401b rotatably mounted on the base 302, and a shaft gear member 401c connected to one side of the outlet conduit 304. The transmission gear 401b meshes with the inner gear disc 401a. In this embodiment, when the helical gear disc 309b rotates, it simultaneously drives the inner gear disc 401a, which in turn drives the transmission gear 401b, which in turn drives the shaft gear member 401c.

[0065] Specifically, the shaft gear 401c includes a gear body 401c-1 disposed on one side of the outlet conduit 304, a hollow groove 401c-2 defined in the gear body 401c-1, a connecting pipe 401c-3 disposed on one side of the gear body 401c-1, and a seal 401c-4 disposed on the connecting pipe 401c-3. The transmission gear 401b meshes with the gear body 401c-1. In this embodiment, one side of the gear body 401c-1 is fixedly connected to the connecting pipe 401c-3, and multiple seals 401c-4 may be provided on the connecting pipe 401c-3 to enhance sealing performance.

[0066] Furthermore, the sealing member 401c-4 includes a connecting protrusion 401c-4a arranged on the outside of the connecting tube 401c-3, and a connecting groove 401c-4b arranged on one side of the introduction tube 303; the connecting protrusion 401c-4a is slidably arranged in the connecting groove 401c-4b.

[0067] The extension assembly 402 includes an arcuate support block 402a connected to the inner side of the introduction tube 303, an arcuate mounting block 402b connected to the inner side of the introduction tube 303, an extension shaft 402c disposed inside the introduction tube 303, a guide groove 402d defined in the extension shaft 402c, a rotating block 402e disposed at one end of the extension shaft 402c, a passage hole 402f defined in the rotating block 402e, and a contact block 402g disposed on one side of the rotating block 402e. The extension shaft 402c is slidably disposed between the arcuate support block 402a and the arcuate mounting block 402b. The rotating block 402e is slidably disposed in the introduction tube 303. In this embodiment, the arcuate support block 402a and the arcuate mounting block 402b are fixedly connected to the inner wall of the introduction tube 303.

[0068] Preferably, the arcuate mounting block 402b includes a snap-in slot 402b-1 formed on the side of the arcuate mounting block 402b, and a snap-in block 402b-2 disposed within the snap-in slot 402b-1; the snap-in block 402b-2 abuts against the guide slot 402d. In this embodiment, when the gear body 401c-1 rotates, the gear body 401c-1 and the extension shaft 402c are connected by an extendable sliding track, driving the extension shaft 402c to rotate. Since the snap-in block 402b-2 abuts against the guide slot 402d, the extension shaft 402c can rotate and extend, thereby squeezing the transmission assembly 403.

[0069] Operation: When helical gear plate 309b rotates, it simultaneously drives internal gear plate 401a, which in turn drives transmission gear 401b, which in turn drives shaft gear 401c. When gear body 401c-1 rotates, it connects to extension shaft 402c via an extendable sliding track, driving extension shaft 402c to rotate. Because engaging block 402b-2 interferes with guide slot 402d, extension shaft 402c rotates and extends, squeezing transmission assembly 403.

[0070] The transmission assembly 403 includes a top sheet 403a slidably disposed within the initiation tube 305, a compression spring 403b disposed on one side of the top sheet 403a, a through-hole plate 403c connected to one end of the compression spring 403b, and a connecting post 403d disposed between the compression spring 403b and the through-hole plate 403c. In this embodiment, when fluid enters from the direction of the compression spring 403b, the pressure causes the top sheet 403a to collide with the initiation tube 305, preventing the fluid from passing through the initiation tube 305. The extension shaft 402c extends and squeezes the top sheet 403a. The squeezing force is greater than the fluid pressure, causing the top sheet 403a to separate from the initiation tube 305, allowing the fluid to pass through the initiation tube 305.

[0071] Operation process: When the fluid enters from the direction of the compression spring 403b, due to the effect of pressure, the top sheet 403a conflicts with the trigger tube 305, and the fluid cannot pass through the trigger tube 305. The extension shaft 402c extends to squeeze the top sheet 403a. The squeezing force is greater than the fluid pressure, thereby separating the top sheet 403a from the trigger tube 305, allowing the fluid to pass through the trigger tube 305.

[0072] The rest of the structure is the same as that of Example 2.

[0073] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0074] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0075] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger antifreeze method, characterized by: include, Close the water inlet and outlet valves of the heat exchanger; Open the drain valve to drain the water from the heat exchanger; Use the heat exchanger air drainage device to drain all the residual moisture inside it; Check that all pipes, pumps and other related equipment are drained; Add antifreeze to the heat exchanger; The heat exchanger antifreeze method adopts a heat exchanger air drainage device, comprising a concentric mechanism (300) and a triggering mechanism (400); The concentric mechanism (300) comprises a housing (301), a base (302) connected to the housing (301), an inlet conduit (303) arranged on one side of the base (302), an outlet conduit (304) connected to one side of the inlet conduit (303), an initiation tube (305) arranged on one side of the inlet conduit (303), a sliding groove (306) provided on the housing (301), a limiting boss (307) arranged in the sliding groove (306), a rotating groove (308) arranged on the side of the housing (301), and a transmission component (309) arranged on the inner side of the housing (301); The triggering mechanism (400) includes a transmission component (401) connected to the transmission component (309), an extension component (402) connected to one side of the transmission component (401), and a guiding component (403) connected to one side of the extension component (402); The transmission component (403) comprises a top plate (403a) slidably arranged in the trigger tube (305), a compression spring (403b) arranged on one side of the top plate (403a), a through-hole plate (403c) connected to one end of the compression spring (403b), and a connecting column (403d) arranged between the compression spring (403b) and the through-hole plate (403c); The transmission component (309) includes a rotating gear (309a) rotatably arranged in the rotating groove (308), a helical toothed disc (309b) rotatably arranged inside the housing (301), a vortex groove (309c) arranged on one side of the helical toothed disc (309b), and a concentric member (309d) slidably arranged in the sliding groove (306); the rotating gear (309a) is meshed with the helical toothed disc (309b); The concentric member (309d) comprises a concentric slider (309d-1) slidably disposed in the sliding groove (306), a concentric through groove (309d-2) provided in the concentric slider (309d-1), a guide sliding groove (309d-3) provided at the bottom of the concentric slider (309d-1), a guide protrusion (309d-4) slidably disposed in the guide sliding groove (309d-3), and a contraction member (309d-5) provided in the concentric through groove (309d-2); the guide protrusion (309d-4) is in conflict with the vortex groove (309c); The contraction member (309d-5) comprises a V-shaped groove (309d-5a) provided on the side of the concentric slider (309d-1), an extrusion block (309d-5b) slidably arranged in the concentric through groove (309d-2), a contraction spring (309d-5c) arranged between the extrusion block (309d-5b) and the concentric through groove (309d-2), and a support rod (309d-5d); the extrusion block (309d-5b) is connected to the guide protrusion (309d-4) via the support rod (309d-5d); The transmission assembly (401) comprises an inner toothed disc (401a) disposed inside the helical toothed disc (309b), a transmission gear (401b) rotatably disposed on the base (302), and a shaft gear member (401c) connected to one side of the outlet conduit (304); the transmission gear (401b) meshes with the inner toothed disc (401a); The shaft gear component (401c) comprises a gear body (401c-1) arranged on one side of the lead-out conduit (304), a hollow groove (401c-2) opened on the gear body (401c-1), a connecting pipe (401c-3) arranged on one side of the gear body (401c-1), and a sealing component (401c-4) arranged on the connecting pipe (401c-3); the transmission gear (401b) is meshed with the gear body (401c-1); The extension assembly (402) comprises an arc-shaped support block (402a) connected to the inner side of the introduction tube (303), an arc-shaped mounting block (402b) connected to the inner side of the introduction tube (303), an extension shaft (402c) arranged on the inner side of the introduction tube (303), a guide groove (402d) provided on the extension shaft (402c), a rotating block (402e) provided at one end of the extension shaft (402c), a channel hole (402f) provided on the rotating block (402e), and a contact block (402g) provided on one side of the rotating block (402e); the extension shaft (402c) is slidably provided between the arc-shaped support block (402a) and the arc-shaped mounting block (402b); and the rotating block (402e) is slidably provided in the introduction tube (303).

2. The heat exchanger antifreeze method according to claim 1, characterized in that: Opening the drain valve to drain water from the heat exchanger includes turning off the power supply, opening the waterproof valve, and allowing water to flow out of the heat exchanger.

3. The heat exchanger antifreeze method according to claim 1 is characterized in that: The heat exchanger air drainage device is used to drain all the residual water inside the heat exchanger, including the case where water is difficult to drain. The heat exchanger air drainage device is used to generate compressed air to clear the residual water in the pipeline.

4. The heat exchanger antifreeze method according to claim 1, characterized in that: The method of adding the antifreeze liquid to the heat exchanger includes determining the required amount and proportion, opening the water valve of the heat exchanger, slowly adding the antifreeze liquid to the heat exchanger until the liquid level reaches the highest point, and then closing the water inlet valve.

5. A heat exchanger air drainage device, characterized by: The heat exchanger antifreeze method according to any one of claims 1 to 4, wherein the heat exchanger air drainage device comprises: A compression assembly (100) comprises a heat exchanger body (101), a compression cylinder (102) arranged on one side of the heat exchanger body (101), and an air cylinder (103) arranged on one side of the compression cylinder (102); The release assembly (200) comprises a first rotating plate (203) arranged on one side of the heat exchanger body (101), a second rotating plate (204) rotatably arranged on one side of the first rotating plate (203), a telescopic rod (202) connected to the second rotating plate (204), and a handle (201) arranged on one side of the telescopic rod (202).

6. The heat exchanger air drainage device according to claim 5, characterized in that: The air cylinder (103) comprises an air cylinder wall (103a) arranged on one side of the compression cylinder (102), an air vent (103b) arranged on the air cylinder wall (103a), a piston (103c) arranged on the inner side of the air cylinder wall (103a), an air inlet plate (103d) arranged on the outer side of the piston (103c), an air outlet (103e) arranged at one end of the air cylinder wall (103a), and an air outlet plate (103f) arranged in the air outlet (103e).

7. The heat exchanger air drainage device according to claim 6, characterized in that: The first rotating plate (203) comprises a first special-shaped plate (203a) arranged on one side of the heat exchanger body (101), and a first limiting plate (203b) arranged on the first special-shaped plate (203a).

8. The heat exchanger air drainage device according to claim 7, characterized in that: The second rotating plate (204) comprises a second special-shaped plate (204a) rotatably arranged on one side of the first rotating plate (203), and a second limiting plate (204b) arranged on the second special-shaped plate (204a).

Images