Circulating liquid pipe, circulating system and ice bath machine

Abstract

The invention relates to the field of ice bath equipment, in particular to a circulating liquid pipe, a circulating system and an ice bath machine. Comprising a liquid distributing head, a movable joint end cover, an interlayer connecting pipe, a liquid return opening, a liquid collecting head and a liquid pump, the liquid distributing head is connected with the interlayer connecting pipe through the movable joint end cover, the other end of the interlayer connecting pipe is connected with the liquid collecting head, the liquid collecting head is connected with one end of the liquid pump, and the other end of the liquid pump is connected with the liquid return opening; the interlayer connecting pipe comprises a first liquid return pipe and a second liquid return pipe which are sequentially and coaxially arranged from inside to outside, and the second liquid return pipe is further communicated with at least one liquid outlet formed in the liquid collecting head; according to the circulating liquid pipe, the functions of liquid feeding and liquid returning can be achieved at the same time, cooled cold water can be conveyed into the container through the liquid feeding opening and the second liquid returning pipe in the liquid distribution head, and water in the container is conveyed back into the cooling-water machine through the first liquid returning pipe and the liquid returning opening to be cooled again; the whole circulation process not only ensures the liquid feeding and returning efficiency, but also ensures the stability of the cooling effect.

Description

Technical Field

[0001] The present invention relates to the field of ice bath equipment, in particular to a circulating liquid pipe, a circulating system and an ice bath machine. Background Art

[0002] For the general public, especially athletes, ice bath therapy is an increasingly popular scientific health care method. This therapy is based on physiological reactions and can effectively improve athletes' physical recovery efficiency and overall health level. Specifically, ice bath therapy can reduce cell metabolism and blood flow rate, reduce nerve conduction speed, reduce muscle spindle activity, and reduce blood lactate levels. These physiological reactions enable ice bath therapy to prevent delayed muscle soreness, prevent muscle damage, promote fatigue recovery, reduce cell hypoxia damage, relieve pain, and relieve muscle spasms.

[0003] In the past, ice baths often involved placing ice cubes in a bathtub to lower the temperature of the water inside, while the person soaked in the cold water. This method was not only cumbersome to operate, but also required a large amount of ice cubes, which increased the cost of the ice bath. Therefore, today, most people use ice bath machines to achieve ice bath therapy. Ice bath machines can adjust the temperature of the water in the bathtub to keep it at a constant temperature suitable for ice baths. In a circulating environment, the water in the ice bath will continue to flow between the temperature control device and the bathtub, ensuring that the water temperature remains consistent throughout the entire treatment process.

[0004] However, existing ice bath machines generally adopt a combined design in which the bathtub and the chiller are separated by two inlet and outlet water pipes. This design not only takes up a large space but also is cumbersome to connect. During use, the two inlet and outlet water pipes are of different lengths and have different connection positions, which makes installation difficult. The inlet and outlet water markings are unclear, which may lead to the inlet and outlet water being connected in reverse. In addition, when not in use, the size and weight of the ice bath machine may become a problem for storage and transportation. Summary of the Invention

[0005] In response to the problems mentioned in the prior art, the present invention proposes a circulating liquid pipe, a circulating system and an ice bath machine. The circulating liquid pipe can reduce the connection structure between the chiller and the bathtub to solve the problem of large space in the background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a circulating liquid pipe, comprising a liquid separation head assembly, a flexible joint connector, a sandwich connecting pipe, a liquid return port, a liquid collecting head, a liquid pump, and a liquid inlet filter cover; The liquid separation head assembly is connected to the interlayer connecting pipe through a flexible joint connector, the other end of the interlayer connecting pipe is connected to the liquid collecting head, the liquid collecting head is connected to one end of the liquid pump, and the other end of the liquid pump is connected to the liquid inlet filter cover; The interlayer connecting pipe includes a first liquid inlet pipe and a second liquid return pipe coaxially arranged from the inside to the outside, wherein the first liquid inlet pipe is also connected to the liquid pump, and the second liquid return pipe is also connected to at least one liquid return port provided on the liquid collecting head; The length of the sandwich connecting pipe can be arbitrarily selected, and / or the material of the sandwich connecting pipe can be arbitrarily selected according to the applied liquid; The liquid dispensing head assembly comprises a liquid dispensing head, a through-plate locking nut, a sealing element and a union nut.

[0007] As a further improvement of the present invention, the liquid return port includes one or more openings evenly distributed on the circumferential plane where the liquid collecting head is located. The outer edge of each liquid return port is tangent to the edge of the liquid collecting head, and the inner edge transitions to the center of the liquid collecting head through a chamfer to form a radial channel.

[0008] As a further improvement of the present invention, the central axis of the first liquid inlet pipe coincides with the central axis of the second liquid return pipe, wherein the first liquid inlet pipe is arranged inside the second liquid return pipe; The outer wall of the second liquid return pipe is provided with a heat-insulating layer.

[0009] As a further improvement of the present invention, the liquid dispensing head includes a liquid inlet pipe and a liquid outlet pipe, and the flexible joint connector includes a liquid inlet connector and a liquid outlet connector; A sealing member is provided between the liquid inlet pipe and the liquid inlet connector, and a sealing member is provided between the liquid outlet pipe and the liquid outlet connector; The liquid separation head assembly is threadedly connected to the union nut.

[0010] As a further improvement of the present invention, a filter core is further provided between the liquid pump and the liquid inlet filter cover.

[0011] As a further improvement of the present invention, the liquid pump is embedded in the liquid collecting head, and the liquid collecting head is threadedly connected to the liquid inlet filter cover.

[0012] As a further improvement of the present invention, one end of the interlayer connecting tube is connected to the liquid separating head assembly, and the other end is also connected to the liquid separating head assembly.

[0013] As a further improvement of the present invention, the liquid separation head is connected to the device housing through a through-plate locking nut.

[0014] In a second aspect, the present invention provides a circulation system comprising the above-mentioned circulating liquid pipe and a refrigeration device, wherein the circulating liquid pipe is connected to the refrigeration device.

[0015] In a third aspect, the present invention provides an ice bath machine, comprising a bathtub and a bath cover connected to the bathtub, wherein the bath cover is movably connected to the bathtub, wherein a circulation system is provided at one end of the bath cover.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: The circulating liquid pipe of the present invention can simultaneously realize the functions of liquid delivery and liquid return. The cooled liquid can be delivered to the container through the liquid inlet pipe and the second liquid return pipe in the liquid separation head. The liquid in the container is delivered back to the refrigeration equipment through the first liquid inlet pipe and the liquid outlet pipe for further cooling. The entire circulation process not only ensures the efficiency of liquid delivery and liquid return, but also ensures the stability of the cooling effect. At the same time, the highly integrated space of the entire device realizes space saving.

[0017] The circulating liquid pipe of the present invention can realize circulation operation by reserving only one liquid separation head assembly between the chiller and the container. It not only simplifies the structure of the circulation system and reduces the difficulty of installation and maintenance, but also the design can meet the needs of multiple different scenarios and embodies extremely high adaptability.

[0018] The circulating liquid pipe of the present invention is provided with multiple liquid return ports. While ensuring the cooling effect, the liquid return ports are designed along the tangent line of the axis, so that the cold water injected into the container can form a strong turbulence, effectively promoting the uniform mixing between the cold water and the uncooled water, thereby greatly improving the cooling efficiency and uniformity, and ensuring the consistency of the water temperature in the container.

[0019] The various components of the circulating liquid pipe of the present invention are simply connected, so that users can easily complete replacement or maintenance when necessary, greatly reducing the use cost and maintenance difficulty.

[0020] The ice bath machine of the present invention simplifies the structure of the entire device compared to the existing structure. By installing the chiller on the bath cover, it not only reduces the space occupied by the entire device, but also makes the device more compact and beautiful. It not only improves the portability of the equipment, but also provides the possibility of its application in limited space, broadening the market prospects of the device.

[0021] Compared with the existing structure, the ice bath machine of the present invention simplifies the structure of the entire device. It is installed on the chiller and the bathtub respectively through the liquid separation head assembly, which simplifies the combined structure of the two separate inlet and outlet water pipes. The installation process is simple, efficient and fool-proof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of an ice bath machine in the prior art; Figure 2 This is an exploded view of the circulating liquid pipe structure according to an embodiment of the present invention; Figure 3 Schematic cross-sectional view of a circulating liquid pipe according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the sandwich connecting pipe according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a liquid outlet according to an embodiment of the present invention; Figure 6This is a schematic structural diagram of an ice bath machine according to an embodiment of the present invention; Figure 7 Schematic diagram of the structure of a flexible joint connection according to an embodiment of the present invention.

[0023] Figure markings: 1. liquid separation head; 1.1. liquid inlet pipe; 1.2. liquid outlet pipe; 2. through-plate locking nut; 3. flexible joint connector; 3.1. liquid inlet connector; 3.2. liquid outlet connector; 4. interlayer connecting pipe; 4.1. first liquid inlet pipe; 4.2. second liquid return pipe; 5. liquid return port; 6. sealing member; 7. flexible joint nut; 8. liquid collecting head; 9. liquid pump; 10. liquid inlet filter cover; 11. filter element. DETAILED DESCRIPTION

[0024] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0030] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0032] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0033] It should be noted that the structure of the common ice bath machine in the prior art is as follows: Figure 1As shown, the air cooler is generally connected to one end of the bathtub via a circulation mechanism, which includes a return pipe and a supply pipe. Therefore, two sets of joints, pipes, and other parts are required for actual installation. Moreover, if components such as filters and liquid pumps are required, separate interfaces must be reserved on the pipes for their installation. In summary, the internal structure of the entire circulation mechanism is cumbersome, making subsequent maintenance difficult, and the entire ice bath structure occupies a large area. The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings.

[0034] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] Example 1 In order to solve the above-mentioned problems, Figure 2 As shown, this embodiment provides a circulating liquid pipe, including a liquid separation head assembly, a flexible joint connector 3, an interlayer connecting pipe 4, a liquid return port 5, a liquid collecting head 8, a liquid pump 9 and a liquid inlet filter cover 10; the liquid separation head assembly in the embodiment includes a liquid separation head 1, a through-plate locking nut 2, a sealing member 6 and a flexible joint nut 7. In the embodiment, the liquid separation head 1 can adjust the flow direction of the fluid, and the liquid separation head 1 and the flexible joint connector 3 are connected by a flexible joint nut 7. The liquid separation head 1 includes an inlet pipe 1.1 and an outlet pipe 1.2, and the flexible joint connector 3 includes an inlet connector 3.1 and an outlet connector 3.2; wherein the inlet pipe 1.1 is aligned and connected to the inlet connector 3.1, and the outlet pipe 1.2 is aligned and connected to the outlet connector 3.2; the liquid separation head 1 and the flexible joint connector 3 can be tightened or loosened by rotating the flexible joint nut 7, providing the function of adjusting, disassembling and reinstalling the liquid separation head 1, and improving flexibility, and the other end of the flexible joint connector 3 is connected to the interlayer connecting pipe 4.

[0036] like Figure 7 As shown, in the embodiment, the movable joint connector 3 is cylindrical as a whole, and the movable joint connector 3 includes a liquid inlet connector 3.1 and a liquid outlet connector 3.2. Therefore, during assembly, the liquid inlet connector 3.1 is aligned with and connected to the first return liquid pipe 4.1 in the interlayer connecting pipe 4, and the liquid outlet connector 3.2 is aligned with and connected to the second return liquid pipe 4.2 in the interlayer connecting pipe 4, thereby completing the connection between the movable joint connector 3 and the interlayer connecting pipe 4. In the embodiment, it is preferably connected by adhesion, but it is not limited to this. Threads or other common methods can also be selected according to the usage scenario.

[0037] In this embodiment, a sealing member 6 is further provided between the liquid-dispensing head 1 and the flexible joint connector 3. The provided seal can ensure that the connection between the liquid-dispensing head 1 and the flexible joint connector 3 can maintain sufficient pressure. The sealing member 6 in the embodiment is preferably a coaxial double-ring gasket, but is not limited to this. Seals of other structures can also be selected according to the usage scenario.

[0038] like Figure 3As shown, the left end of the liquid separation head 1 in the embodiment is a liquid inlet pipe 1.1, and the right end is provided with a liquid outlet pipe 1.2, wherein the liquid outlet pipe 1.2 is connected to the inlet end of the refrigeration equipment, and the liquid inlet pipe 1.1 is connected to the output end of the refrigeration equipment; the liquid separation head 1 in the embodiment is compact and reasonable in structure. Compared with the pipelines in the prior art, it not only reduces the number and length of pipeline connections, reduces the complexity of the pipeline, but also facilitates installation and subsequent maintenance by operators. Figure 3 As can be seen from the flow arrows of the fluid in the figure, the blue arrow indicates the path of the uncirculated water, which is pumped into the first liquid inlet pipe 4.1 by the liquid pump 9, and then enters the refrigeration equipment through the liquid outlet pipe 1.2 for treatment; the red arrow indicates the path of the circulating water, which enters from the liquid inlet pipe 1.1, enters the second liquid return pipe 4.2, and then enters the container through the liquid return port 5, completing the entire circulation process.

[0039] like Figure 3 and Figure 4 As shown, the interlayer connecting tube 4 in the embodiment includes a first liquid inlet tube 4.1 and a second liquid return tube 4.2. The interlayer connecting tube 4 is cylindrical as a whole. The first liquid inlet tube 4.1 is provided in the center of the interlayer connecting tube 4. The second liquid return tube 4.2 is provided between the first liquid inlet tube 4.1 and the edge of the interlayer connecting tube 4. The first liquid inlet tube 4.1 and the second liquid return tube 4.2 are coaxially arranged. The interlayer connecting tube 4 in this embodiment can select a suitable length according to different specific usage scenarios. At the same time, the interlayer connecting tube 4 can select a suitable material according to different usage scenarios.

[0040] like Figure 2 and Figure 3 As shown, the liquid collecting head 8 of the embodiment is provided with a receiving space for installing the liquid pump 9. As shown in the figure, a convex structure is provided on the top of the liquid collecting head 8, and the convex structure is connected to the bottom of the liquid collecting head 8 through a transition surface. A first opening is provided in the center of the convex structure, and the first opening can connect the first liquid inlet pipe 4.1 with the output end of the liquid pump 9. A second opening is provided around the first opening, and the second opening can connect the second liquid return pipe 4.2 with the liquid outlet 5. Figure 2 As shown, when this embodiment is in use, the liquids in the first liquid inlet pipe 4.1 and the second liquid return pipe 4.2 will not contact each other, thus achieving stability in liquid return and liquid delivery. Figure 5As shown, the bottom of the raised structure of the liquid collecting head 8 is uniformly provided with multiple liquid return ports 5. In this embodiment, four liquid return ports 5 are preferably provided, but this is not limited to this. The number of liquid return ports 5 can be increased or decreased according to actual usage needs. The opening of the liquid return port 5 has a rectangular outline, with the outer edge tangent to the edge of the liquid collecting head 8 and the inner edge transitioning to the center of the liquid collecting head 8 through a rounded corner, forming a radial channel. When the liquid return port 5 is arranged tangentially along the axis, the injected circulating water will flow in a tangential direction the moment it contacts the container, rather than being injected directly vertically downward or horizontally. This flow pattern generates a tangential force, causing the liquid to form a rotational motion in the container and form turbulence, thereby achieving uniform mixing of the circulating water and the uncirculated water.

[0041] In the embodiment, a filter core 11 is further provided at the bottom of the liquid pump 9. The filter core 11 is specifically arranged between the liquid inlet filter cover 10 and the liquid pump 9. The filter core 11 can filter the liquid before entering the liquid pump 9, effectively removing impurities, particles and suspended matter in the liquid, and ensuring the cleanliness of the liquid inside the liquid pump 9 and subsequently.

[0042] When in use, after installing this device, ensure that the liquid inlet filter cover 10 is immersed in the container. At this time, the liquid in the container will pass through the liquid inlet filter cover 10 and the filter element 11 into the liquid pump 9. Under the action of the liquid pump 9, the liquid is driven through the first liquid inlet pipe 4.1 and from the liquid outlet pipe 1.2 of the liquid separator 1 to enter the refrigeration equipment for treatment. The treated liquid is injected into the container again from the liquid return port 5 through the liquid inlet pipe 1.1 and the second liquid return pipe 4.2 of the liquid separator 1, realizing the flow circulation of the liquid.

[0043] It should be noted that the circulating liquid pipe in this embodiment can be applied to various circulation systems such as refrigeration, cleaning, lubrication, and sewage treatment.

[0044] Example 2 This embodiment is substantially the same as Example 1, except that it provides a circulation system comprising a circulating liquid pipe and a refrigeration device, wherein the circulating liquid pipe is connected to the refrigeration device. The refrigeration device in this embodiment is a chiller, and the circulating liquid pipe is connected to the chiller to circulate cooling water. During connection, the liquid distributor 1 is connected to the output or input of the chiller.

[0045] Example 3 This embodiment is basically the same as embodiment 1 and embodiment 2, except that Figure 6 As shown, this embodiment provides an ice bath machine, which includes a bathtub and a bath cover connected to the bathtub. The middle part of the bath cover is connected to the bathtub through a folding member. In this embodiment, the folding member is preferably hinged, but not limited to this. Spring folding, slide rail folding, etc. can also be selected; Figure 6As shown, the middle portion of the bathtub cover is connected to the bathtub. The left end of the bathtub cover can be used to open and close the bathtub. The inner surface of the right end is provided with a circulation system as disclosed in Example 2. In addition, a housing is provided to enclose the circulation system to prevent liquid from coming into contact with the circulation system during use. A step is provided at one end of the bathtub to facilitate entering and exiting the bathtub.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0047] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made based on the technical solution in accordance with the technical concept proposed by the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A circulating liquid pipe, characterized in that: It includes a liquid separation head assembly, a flexible joint connector (3), a sandwich connecting pipe (4), a liquid return port (5), a liquid collecting head (8), a liquid pump (9) and a liquid inlet filter cover (10); The liquid separation head assembly is connected to the interlayer connecting pipe (4) through a flexible joint connector (3), the other end of the interlayer connecting pipe (4) is connected to the liquid collecting head (8), the liquid collecting head (8) is connected to one end of the liquid pump (9), and the other end of the liquid pump (9) is connected to the liquid inlet filter cover (10); The interlayer connecting pipe (4) comprises a first liquid inlet pipe (4.1) and a second liquid return pipe (4.2) coaxially arranged from the inside to the outside, wherein the first liquid inlet pipe (4.1) is also connected to the liquid pump (9), and the second liquid return pipe (4.2) is also connected to at least one liquid return port (5) provided on the liquid collecting head (8); The length of the sandwich connecting tube (4) can be arbitrarily selected, and / or the material of the sandwich connecting tube (4) can be arbitrarily selected according to the applied liquid; The liquid dispensing head assembly comprises a liquid dispensing head (1), a through-plate locking nut (2), a sealing member (6), and a union nut (7).

2. A circulating liquid pipe according to claim 1, characterized in that: The liquid return port (5) comprises one or more openings uniformly distributed on the circumferential plane where the liquid collecting head (8) is located. The outer edge of each liquid return port (5) is tangent to the edge of the liquid collecting head (8), and the inner edge transitions to the center of the liquid collecting head (8) through chamfering to form a radial channel.

3. A circulating liquid pipe according to claim 1, characterized in that: The central axes of the first liquid inlet pipe (4.1) and the second liquid return pipe (4.2) coincide with each other, wherein the first liquid inlet pipe (4.1) is arranged inside the second liquid return pipe (4.2); The outer wall of the second liquid return pipe (4.2) is provided with a heat-insulating layer.

4. A circulating liquid pipe according to claim 3, characterized in that: The liquid dispensing head (1) comprises a liquid inlet pipe (1.1) and a liquid outlet pipe (1.2), and the flexible joint connecting piece (3) comprises a liquid inlet connecting piece (3.1) and a liquid outlet connecting piece (3.2); A sealing member (6) is provided between the liquid inlet pipe (1.1) and the liquid inlet connector (3.1), and a sealing member (6) is provided between the liquid outlet pipe (1.2) and the liquid outlet connector (3.2); The liquid separation head (1) component is threadedly connected to the flexible joint nut (7).

5. A circulating liquid pipe according to claim 1, characterized in that: A filter core (11) is further provided between the liquid pump (9) and the liquid inlet filter cover (10).

6. A circulating liquid pipe according to claim 1, characterized in that: The liquid pump (9) is embedded in the liquid collecting head (8), and the liquid collecting head (8) is threadedly connected to the liquid inlet filter cover (10).

7. A circulating liquid pipe according to claim 1, characterized in that: One end of the interlayer connecting tube (4) is connected to the liquid separation head assembly (1), and the other end is also connected to the liquid separation head assembly (1).

8. The circulating liquid pipe according to claim 1, characterized in that: The liquid dispensing head (1) is connected to the device housing via a through-plate locking nut (2).

9. A circulation system, characterized in that: The invention comprises the circulating liquid pipe according to any one of claims 1 to 8 and a refrigeration device, wherein the circulating liquid pipe is connected to the refrigeration device.

10. An ice bath machine, comprising the circulation system according to claim 9, characterized in that: The utility model comprises a bathtub and a bath cover connected with the bathtub. The bath cover is movably connected with the bathtub, wherein one end of the bath cover is provided with a circulation system.

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