CN219933327U - Temperature regulating mechanism and parallel pipeline thereof - Google Patents

Temperature regulating mechanism and parallel pipeline thereof Download PDF

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Publication number
CN219933327U
CN219933327U CN202320283772.5U CN202320283772U CN219933327U CN 219933327 U CN219933327 U CN 219933327U CN 202320283772 U CN202320283772 U CN 202320283772U CN 219933327 U CN219933327 U CN 219933327U
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China
Prior art keywords
heat exchange
exchange box
pipeline
box body
upper cover
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CN202320283772.5U
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Chinese (zh)
Inventor
李建超
张超
张海洋
杨智
安思远
白秀森
范思毅
李盟
张建民
赵宇辰
王庆宇
崔永军
赵天
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Huaneng Beijing Thermal Power Co Ltd
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Huaneng Beijing Thermal Power Co Ltd
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Abstract

The utility model discloses a temperature regulating mechanism and a parallel pipeline thereof, comprising a heat exchange assembly, a temperature regulating mechanism and a temperature regulating mechanism, wherein the heat exchange assembly comprises a heat exchange box piece, a movable flow guide plate piece positioned on the heat exchange box piece and a filtering box piece clamped on the heat exchange box piece; and the upper cover assembly comprises an upper cover body connected with the heat exchange box piece and a mounting hole positioned on the upper cover body. According to the utility model, the pipeline needing heat exchange is penetrated in and out through a group of mounting holes, water flow with proper temperature is introduced into the heat exchange box through the filter box, so that the fluid in the pipeline and the water flow in the heat exchange box are subjected to heat exchange, the heat exchange box is sealed through the mounting Kong Kaqian on the upper cover body, energy is gathered in the heat exchange box, and the heat exchange can be more sufficient and the waste of the energy is avoided after the movable guide plates with proper quantity are arranged for further movement adjustment.

Description

Temperature regulating mechanism and parallel pipeline thereof
Technical Field
The utility model relates to the technical field of temperature regulation, in particular to a temperature regulating mechanism and a parallel pipeline thereof.
Background
Pipes are devices for transporting gas, liquid or fluid with solid particles, which are coupled by pipes, pipe couplings, valves, etc. In general, after the fluid is pressurized by a blower, a compressor, a pump, a boiler, etc., the fluid flows from a high pressure place to a low pressure place of a pipeline, and the fluid can be conveyed by the pressure or gravity of the fluid. The piping is used in a wide variety of applications, mainly in water supply, water drainage, heat supply, gas supply, long distance transportation of petroleum and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices.
When conveying gas, liquid or fluid with solid particles, the fluid is often required to be locally heated, constructors often regulate the temperature of the pipeline fluid through attaching heating or cooling equipment, but the energy outside the pipeline is difficult to fully transfer to the fluid in the pipeline, so that the energy is wasted.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
In view of the above-mentioned problem that energy outside the existing pipeline is difficult to sufficiently transfer to the fluid in the pipeline, thereby causing energy waste, a temperature adjusting mechanism is proposed.
It is therefore one of the objects of the present utility model to provide a temperature adjustment mechanism.
In order to solve the technical problems, the utility model provides the following technical scheme: the temperature regulating mechanism comprises a heat exchange assembly, a heat exchange box, a movable flow guide plate and a filtering box, wherein the heat exchange box is provided with a movable flow guide plate; and the upper cover assembly comprises an upper cover body connected with the heat exchange box piece and a mounting hole positioned on the upper cover body.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the heat exchange box piece comprises a heat exchange box body, a water inlet is formed in the heat exchange box body, and a water outlet is further formed in the heat exchange box body.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the inner side of the heat exchange box body is also provided with a fixed flow guide frame, and a first limit clamping groove is formed in the fixed flow guide frame; the movable flow guide plate comprises a movable flow guide plate, a second limiting clamping groove is formed in the movable flow guide plate, and a clamping strip is arranged on one side of the movable flow guide plate; the heat exchange box body is also provided with a group of limiting sliding grooves, and the clamping strips are movably clamped and embedded in the limiting sliding grooves.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the heat exchange box body is matched with the upper cover body; the heat exchange box body is also provided with a group of supporting underframes, and the group of supporting underframes are symmetrically distributed on the lower side of the heat exchange box body.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the heat exchange box piece further comprises an L-shaped supporting frame, and the L-shaped supporting frame is fixed on the outer side of the supporting underframe.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the filter box piece comprises a filter ring, a plurality of filter holes are formed in the middle of the filter ring, and the filter ring is matched with the water inlet.
The utility model has the beneficial effects that: the pipeline that will carry out the heat exchange passes through a set of mounting hole and wears out, introduces the inside of heat exchange box spare with the rivers of suitable temperature through filtering box spare for the rivers in fluid and the heat exchange box spare in the pipeline take place the heat exchange, play sealed effect on the heat exchange box spare through installation Kong Kaqian on the upper cover body, and the energy is gathered in the inside of heat exchange box spare, can make the heat exchange more abundant after removing the adjustment again through setting up the activity water conservancy diversion plate spare of suitable quantity, avoids the waste of energy.
In view of the problem that the above-mentioned conventional serpentine pipe is liable to cause leakage of the pipe, parallel pipes have been proposed.
Therefore, the utility model also provides a parallel pipeline.
In order to solve the technical problems, the utility model also provides the following technical scheme: the temperature regulating mechanism comprises the temperature regulating mechanism and further comprises a pipeline assembly, wherein the pipeline assembly comprises a parallel pipeline piece positioned in the heat exchange box piece and a diversion pipe fitting connected with the parallel pipeline piece.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the parallel pipeline piece comprises a metal pipeline, a plurality of heat conducting rods are arranged in the middle of the metal pipeline, and two ends of the metal pipeline are connected with merging pipelines.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the metal pipelines are embedded in the first limiting clamping grooves on the fixed diversion frames, and the combined pipelines are embedded in the mounting holes.
As a preferred embodiment of the parallel pipeline according to the utility model, wherein: the flow guide pipe fitting comprises a fluid pipeline, and a first flange is arranged on one side of the fluid pipeline; and a second flange is arranged at one end, far away from the metal pipeline, of the combined pipeline, and the first flange is matched with the second flange.
The utility model has the beneficial effects that: when fluid is led in through the guide pipe fitting at one end of the parallel pipeline piece, the fluid enters the parallel pipeline piece to form split flow, after energy exchange is carried out in the heat exchange box piece, the fluid is led out through the guide pipe fitting at the other end of the parallel pipeline piece, the fluid in the pipeline is separated through the parallel pipeline, the heat dissipation efficiency is improved, and meanwhile the situation that the fluid is broken or blocked due to the fact that a winding tiny pipeline is used is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of the temperature adjusting mechanism and the parallel pipeline thereof.
Fig. 2 is a schematic diagram of an exploded structure of the temperature adjusting mechanism and the parallel pipeline thereof.
Fig. 3 is a schematic diagram of a temperature adjusting mechanism and a heat exchange assembly with parallel pipes according to the present utility model.
Fig. 4 is a schematic diagram of a heat exchange box structure of the temperature adjusting mechanism and the parallel pipeline of the utility model.
Fig. 5 is a schematic structural view of a movable deflector of the temperature adjusting mechanism and the parallel pipeline of the utility model.
Fig. 6 is a schematic diagram of a temperature adjusting mechanism and a pipeline assembly structure of the parallel pipeline of the temperature adjusting mechanism.
FIG. 7 is a schematic diagram of the temperature adjusting mechanism and the parallel pipeline of the temperature adjusting mechanism.
Fig. 8 is a schematic diagram of the temperature adjusting mechanism and the heat exchange of the parallel pipeline of the temperature adjusting mechanism.
FIG. 9 is a schematic diagram of the flow direction of the fluid in the temperature adjusting mechanism and the parallel pipeline according to the present utility model.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present utility model in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1, there is provided a schematic overall structure of a temperature adjusting mechanism and parallel pipes thereof, as shown in fig. 1-5, wherein the temperature adjusting mechanism comprises a heat exchanging assembly 100, including a heat exchanging box 101, a movable flow guiding plate 102 on the heat exchanging box 101, and a filtering box 103 embedded on the heat exchanging box 101; and, upper cover assembly 200, including the upper cover body 201 that links to each other with heat exchange case 101, and be located the mounting hole 202 on the upper cover body 201, wherein, upper cover body 201 is thermal insulation material, can avoid the loss of energy, the pipeline that needs to carry out the heat exchange passes through a set of mounting hole 202 and penetrates and pass out, the rivers that will fit the temperature introduce the inside of heat exchange case 101 through filtration box 103, make the rivers in pipeline fluid and the heat exchange case 101 take place the heat exchange, play sealed effect on heat exchange case 101 through the mounting hole 202 card on upper cover body 201, the energy is gathered in the inside of heat exchange case 101, can make the heat exchange more abundant after moving the adjustment again through setting up the movable water conservancy diversion plate 102 of suitable quantity, avoid the waste of energy.
Specifically, the heat exchange box piece 101 comprises a heat exchange box body 101a, a water inlet 101a-1 is formed in the heat exchange box body 101a, a water outlet 101a-2 is further formed in the heat exchange box body 101a, wherein the heat exchange box body 101a is made of heat insulation materials, energy loss is avoided, the water inlet 101a-1 and the water outlet 101a-2 are both fixed on the heat exchange box body 101a, and the water inlet 101a-1 and the water outlet 101a-2 are diagonally distributed on the side wall of the heat exchange box body 101 a.
Further, a fixed guide frame 101a-3 is further arranged on the inner side of the heat exchange box body 101a, and a first limit clamping groove is formed in the fixed guide frame 101 a-3; the movable guide plate 102 comprises a movable guide plate 102a, a second limiting clamping groove 102a-1 is formed in the movable guide plate 102a, and a clamping strip 102a-2 is arranged on one side of the movable guide plate 102 a; the heat exchange box body 101a is further provided with a group of limiting sliding grooves 101a-4, the clamping strips 102a-2 are movably clamped and embedded in the limiting sliding grooves 101a-4, wherein one end of the fixed flow guide frame 101a-3 is fixed on the inner wall of the heat exchange box body 101a, the position where the fixed flow guide frame 101a-3 is connected with the heat exchange box body 101a is arc-shaped, so that liquid circulation is facilitated, the movable flow guide plate 102a is slidably clamped and embedded on the limiting sliding grooves 101a-4 through the clamping strips 102a-2, position adjustment is facilitated, and a pipeline needing heat exchange can be conveniently placed through the second limiting clamping grooves 102 a-1.
The operation process comprises the following steps: the pipeline which needs to be subjected to temperature regulation is clamped and embedded on the first limit clamping groove and the second limit clamping groove 102a-1, water flow with proper temperature is led in through the water inlet 101a-1 according to the requirement, the water flow is filtered through the filtering box part 103, after entering the heat exchange box body 101a, the water flow flows along a winding channel which is jointly formed by the fixed flow guide frame 101a-3 and the movable flow guide plate 102, when the water flow flows, heat exchange occurs between heat energy of the water flow and heat energy of fluid in the pipeline, so that the temperature of the fluid in the pipeline is increased or reduced, the time of the water flow passing through the heat exchange box body 101a can be controlled by controlling the number of the movable flow guide plate 102 and adjusting the position of the movable flow guide plate 102, and therefore, the water flow energy can be fully utilized.
Example 2
Referring to fig. 1-5, this embodiment differs from the first embodiment in that: the heat exchange box body 101a is matched with the upper cover body 201; the heat exchange box body 101a is further provided with a group of supporting underframes 101a-5, the group of supporting underframes 101a-5 are symmetrically distributed on the lower side of the heat exchange box body 101a, wherein the upper cover body 201 is embedded on the heat exchange box body 101a, and the group of supporting underframes 101a-5 are fixed on two ends of the lower side of the heat exchange box body 101a so as to play a supporting role.
Specifically, the heat exchange box 101 further includes an L-shaped supporting frame 101b, the L-shaped supporting frame 101b is fixed on the outer side of the supporting underframe 101a-5, wherein the number of the L-shaped supporting frames 101b is at least 2, the 2L-shaped supporting frames 101b are symmetrically distributed on two sides of the heat exchange box body 101a, the bottoms of the L-shaped supporting frames 101b are flush with the bottoms of the supporting underframe 101a-5, and the L-shaped supporting frames 101b can support the pipeline.
Further, the filter box 103 comprises a filter ring 103a, a plurality of filter holes 103a-1 are formed in the middle of the filter ring 103a, the filter ring 103a is matched with the water inlet 101a-1, the filter ring 103a is fixedly clamped and embedded in the inner side of the water inlet 101a-1, impurities are blocked on the outer side of the filter ring 103a when water flows through the filter holes 103a-1, and the water flows can enter through the filter holes 103 a-1.
The rest of the structure is the same as in embodiment 1.
The operation process comprises the following steps: the pipe to be heat-exchanged can be placed on the L-shaped supporting frame 101b to be stable by fixing the supporting base frames 101a-5 to both ends of the lower side of the heat exchange box body 101a to perform a supporting function, the external water pipe is connected with the water inlet 101a-1, the water flow can be blocked at the outer side of the filtering ring 103a by impurities when passing through the water inlet 101a-1, and the water flow enters the inside of the heat exchange box body 101a through the filtering holes 103 a-1.
Example 3
Referring to fig. 1-9, this embodiment differs from the above embodiments in that: the utility model provides a parallel pipeline, including temperature adjustment mechanism, still include, pipeline subassembly 300 includes the parallel pipeline spare 301 that is located in the heat exchange box spare 101, and the water conservancy diversion pipe spare 302 that links to each other with parallel pipeline spare 301, wherein, when the fluid is introduced through the water conservancy diversion pipe spare 302 of parallel pipeline spare 301 one end, form the reposition of redundant personnel after getting into parallel pipeline spare 301, after the inside of heat exchange box spare 101 carries out the energy exchange, the water conservancy diversion pipe spare 302 of rethread parallel pipeline spare 301 other end is drawn forth, make the quilt of pipeline internal fluid separate through the pipeline of parallelly connected, the radiating efficiency has been improved, avoid simultaneously using the tiny pipeline of serpentine to take place the condition of fracture or jam fluid.
Specifically, the parallel pipeline member 301 includes a metal pipeline 301a, a plurality of heat conducting rods 301a-2 are disposed in the middle of the metal pipeline 301a, two ends of the metal pipeline 301a are both connected with a merging pipeline 301a-1, wherein the metal pipeline 301a and the plurality of heat conducting rods 301a-2 are fixedly connected, the plurality of heat conducting rods 301a-2 are uniformly distributed in the middle of the metal pipeline 301a, the metal pipeline 301a and the plurality of heat conducting rods 301a-2 are made of heat conducting materials, energy transmission can be rapidly performed, the merging pipeline 301a-1 is fixedly connected with the metal pipeline 301a, and fluid can circulate between the merging pipeline 301a-1 and the metal pipeline 301 a.
Specifically, the metal pipes 301a are all embedded in the first limiting clamping grooves on the fixed diversion frames 101a-3, the combined pipe 301a-1 is embedded in the mounting hole 202, wherein the metal pipes 301a are all embedded and fixed on the fixed diversion frames 101a-3 to play a role in fixing, and the combined pipe 301a-1 is embedded in the mounting hole 202 to play a limiting role.
Further, the flow guiding pipe 302 includes a fluid pipe 302a, and a first flange 302a-1 is disposed on one side of the fluid pipe 302 a; the end, far away from the metal pipeline 301a, of the combined pipeline 301a-1 is provided with a second flange 301a-1a, the first flange 302a-1 is matched with the second flange 301a-1a, wherein the fluid pipeline 302a is fixedly connected with the first flange 302a-1, the combined pipeline 301a-1 is fixedly connected with the second flange 301a-1a, and the first flange 302a-1 is fixedly connected with the second flange 301a-1a through bolts.
The rest of the structure is the same as in embodiment 2.
The operation process comprises the following steps: the fluid is introduced through the fluid pipeline 302a at one end of the parallel pipeline member 301, the fluid is divided into a plurality of parts and enters the metal pipeline 301a, the energy in the fluid can permeate to the outside through the metal pipeline 301a, meanwhile, the heat conducting rod 301a-2 can transfer the energy of the fluid in the metal pipeline 301a, the metal pipeline 301a and the heat conducting rod 301a-2 exchange energy with water flow rapidly in the heat exchange box member 101, and the water flow with exchanged energy is led out through the guide pipe fitting 302 at the other end of the parallel pipeline member 301.
It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, 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 utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. A temperature adjustment mechanism, characterized in that: comprising the steps of (a) a step of,
a heat exchange assembly (100) comprising a heat exchange box (101), a movable deflector (102) positioned on the heat exchange box (101) and a filter box (103) clamped on the heat exchange box (101); the method comprises the steps of,
the upper cover assembly (200) comprises an upper cover body (201) connected with the heat exchange box (101), and a mounting hole (202) positioned on the upper cover body (201).
2. The temperature adjustment mechanism of claim 1, wherein: the heat exchange box piece (101) comprises a heat exchange box body (101 a), a water inlet (101 a-1) is formed in the heat exchange box body (101 a), and a water outlet (101 a-2) is further formed in the heat exchange box body (101 a).
3. The temperature adjustment mechanism of claim 2, wherein: the inner side of the heat exchange box body (101 a) is also provided with a fixed flow guide frame (101 a-3), and a first limit clamping groove is formed in the fixed flow guide frame (101 a-3);
the movable guide plate (102) comprises a movable guide plate (102 a), a second limiting clamping groove (102 a-1) is formed in the movable guide plate (102 a), and a clamping strip (102 a-2) is arranged on one side of the movable guide plate (102 a);
a group of limit sliding grooves (101 a-4) are further formed in the heat exchange box body (101 a), and the clamping strips (102 a-2) are movably clamped in the limit sliding grooves (101 a-4).
4. A temperature adjustment mechanism as set forth in claim 3, wherein: the heat exchange box body (101 a) is matched with the upper cover body (201);
the heat exchange box body (101 a) is further provided with a group of supporting underframes (101 a-5), and the group of supporting underframes (101 a-5) are symmetrically distributed on the lower side of the heat exchange box body (101 a).
5. The temperature adjustment mechanism according to claim 4, wherein: the heat exchange box (101) further comprises an L-shaped supporting frame (101 b), and the L-shaped supporting frame (101 b) is fixed on the outer side of the supporting underframe (101 a-5).
6. A temperature adjustment mechanism according to claim 3 or 5, characterized in that: the filter box (103) comprises a filter ring (103 a), a plurality of filter holes (103 a-1) are formed in the middle of the filter ring (103 a), and the filter ring (103 a) is matched with the water inlet (101 a-1).
7. A parallel pipeline, characterized in that: comprising a temperature adjustment mechanism according to any of claims 1-6, further comprising a pipe assembly (300), said pipe assembly (300) comprising parallel pipe elements (301) located in the heat exchange box (101), and a flow guiding pipe element (302) connected to said parallel pipe elements (301).
8. The parallel pipeline as recited in claim 7, wherein: the parallel pipeline piece (301) comprises a metal pipeline (301 a), a plurality of heat conducting rods (301 a-2) are arranged in the middle of the metal pipeline (301 a), and two ends of the metal pipeline (301 a) are connected with merging pipelines (301 a-1).
9. The parallel pipeline as recited in claim 8, wherein: the metal pipelines (301 a) are embedded in first limit clamping grooves on the fixed guide frames (101 a-3), and the combined pipelines (301 a-1) are embedded in the mounting holes (202).
10. The parallel pipeline as recited in claim 9, wherein: the flow guide pipe fitting (302) comprises a fluid pipeline (302 a), and a first flange (302 a-1) is arranged on one side of the fluid pipeline (302 a);
a second flange (301 a-1 a) is arranged at one end, far away from the metal pipeline (301 a), of the combined pipeline (301 a-1), and the first flange (302 a-1) is matched with the second flange (301 a-1 a).
CN202320283772.5U 2023-02-22 2023-02-22 Temperature regulating mechanism and parallel pipeline thereof Active CN219933327U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320283772.5U CN219933327U (en) 2023-02-22 2023-02-22 Temperature regulating mechanism and parallel pipeline thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320283772.5U CN219933327U (en) 2023-02-22 2023-02-22 Temperature regulating mechanism and parallel pipeline thereof

Publications (1)

Publication Number Publication Date
CN219933327U true CN219933327U (en) 2023-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320283772.5U Active CN219933327U (en) 2023-02-22 2023-02-22 Temperature regulating mechanism and parallel pipeline thereof

Country Status (1)

Country Link
CN (1) CN219933327U (en)

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