A heat exchanger assembly for ablation therapy equipment

Abstract

The present invention provides a heat exchanger assembly for ablation therapy equipment, comprising a primary cooling heat exchanger, a primary heating heat exchanger, a fluid pipeline and a secondary cooling heat exchanger, wherein the primary cooling heat exchanger is installed on the fluid pipeline for cooling the fluid in the fluid pipeline; the primary heating heat exchanger is installed on the fluid pipeline for heating the fluid in the fluid pipeline; the installation locations of the primary cooling heat exchanger and the primary heating heat exchanger are close to the inlet of the fluid pipeline; the secondary cooling heat exchanger is a cooling heat exchanger with a variable length of the heat exchange pipeline, the input pipeline and the output pipeline of the secondary cooling heat exchanger are respectively connected to the fluid pipeline; the installation location of the secondary cooling heat exchanger is close to the outlet of the fluid pipeline. The heat exchanger assembly for ablation therapy equipment solves the problems that the ablation equipment in the prior art can only perform single freezing or single heating and cannot accurately control the output fluid temperature of the heat exchanger in the ablation equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a heat exchanger assembly of an ablation treatment device used for medical cold and hot ablation equipment. Background Art

[0002] Cold and heat ablation methods are commonly used for a variety of medical purposes. For example, cold therapy, heat therapy, or a combination of cold and heat therapy to destroy tissue can be used in dermatology, solid tumors, and electrophysiology for the treatment of arrhythmias. Cold and heat ablation generally refers to physical ablation, including thermal ablation and cold ablation.

[0003] The type and outcome of tissue cell damage is affected by several parameters during the treatment process, including the duration of the thermal ablation, the treatment temperature, the ramp rate, the size of the treated tissue, and the number of cycles.

[0004] At present, the output fluid of the heat exchanger of cold and hot ablation equipment has two forms: fixed flow output and variable flow output. Regardless of the output form of the equipment, the temperature of the fluid at the heat exchanger outlet cannot be accurately controlled. In other words, there is no way to control the minimum temperature or the heating and cooling rate and the input energy during the operation. In addition, many ablation devices currently have a single function, single freezing or single heating. The latest research combines cold and hot ablation, first thermally ablating the tissue, then cryoablating it. The range can be smaller, and more macromolecules are retained after tissue necrosis, which can maximize the role of stimulating immune function. Summary of the invention

[0005] The present invention provides a heat exchanger assembly for an ablation therapy device, which is used to solve the problems that the ablation device in the prior art can only perform single freezing or single heating and the output fluid temperature of the heat exchanger in the ablation device cannot be accurately controlled.

[0006] In order to solve the above problems, the present invention provides a heat exchanger assembly for an ablation treatment device, comprising a primary cooling heat exchanger, a primary heating heat exchanger, a fluid pipeline and an adjustable secondary cooling heat exchange device.

[0007] The primary refrigeration heat exchanger is installed on the fluid pipeline and is used to refrigerate the fluid in the fluid pipeline;

[0008] The primary heating heat exchanger is installed on the fluid pipeline and is used to heat the fluid in the fluid pipeline;

[0009] The installation locations of the primary cooling heat exchanger and the primary heating heat exchanger are close to the inlet of the fluid pipeline;

[0010] The input pipeline and the output pipeline of the secondary refrigeration heat exchange device are respectively connected to the fluid pipeline;

[0011] The installation location of the secondary refrigeration heat exchange device is close to the outflow outlet of the fluid pipeline.

[0012] Optionally, the secondary refrigeration heat exchange device is a refrigeration heat exchanger including multiple input branch pipelines and an output pipeline, the multiple input branch pipelines are connected to the heat exchange pipelines at different positions in the refrigeration heat exchanger, a first valve is installed on the fluid pipeline between the output pipeline and the input branch pipeline closest to the output pipeline, the input branch pipeline and the output pipeline are connected to the fluid pipeline, and the input branch pipelines are both installed with a second valve.

[0013] Optionally, the secondary refrigeration heat exchange device is a refrigeration heat exchanger including multiple output branch pipelines and an input pipeline, the multiple output branch pipelines are connected to the heat exchange pipelines at different positions in the refrigeration heat exchanger, a first valve is installed on the fluid pipeline between the input pipeline and the output branch pipeline closest to the input pipeline, the output branch pipeline and the input pipeline are connected to the fluid pipeline, and the output branch pipeline and the input pipeline are both installed with a second valve.

[0014] Optionally, the secondary refrigeration heat exchange device is a heat exchanger group including several refrigeration heat exchangers, the heat exchange pipelines in each of the refrigeration heat exchangers have different lengths, the input pipeline and the output pipeline of the refrigeration heat exchanger are connected to the fluid pipeline, a first valve is installed on the fluid pipeline between the input pipeline farthest from the fluid pipeline inlet and the output pipeline farthest from the fluid pipeline outlet, the refrigeration heat exchangers are connected in parallel with each other, and a second valve is installed on the input pipeline of each refrigeration heat exchanger.

[0015] Optionally, the first-stage refrigeration heat exchanger and the first-stage heating heat exchanger are installed in series on the fluid pipeline; or the first-stage refrigeration heat exchanger and the first-stage heating heat exchanger are installed in parallel on the fluid pipeline.

[0016] Optionally, the ablation therapy device heat exchanger assembly further includes a secondary heating heat exchanger, and the secondary heating heat exchanger is installed on the fluid pipeline after the outlet of the primary heating heat exchanger.

[0017] Optionally, a proportional regulating valve is installed on the fluid pipeline before the inlet of the first-stage refrigeration heat exchanger and / or the first-stage heating heat exchanger.

[0018] Optionally, the fluid pipeline includes a first fluid pipeline and a second fluid pipeline, wherein the first-stage heating heat exchanger is installed on the first fluid pipeline; the first-stage refrigeration heat exchanger and the second-stage refrigeration heat exchanger are installed on the second fluid pipeline; and a first valve is installed on the first fluid pipeline after the outlet of the first-stage heating heat exchanger.

[0019] Optionally, the first fluid pipeline and the second fluid pipeline share an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline each have an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline share an inlet and each have an outlet; or the first fluid pipeline and the second fluid pipeline share an outlet and each have an inlet.

[0020] Optionally, the ablation therapy device heat exchanger assembly also includes a plurality of thermometers and pressure meters. The outlets of the first-stage cooling heat exchanger and the first-stage heating heat exchanger are both equipped with thermometers and pressure meters, and the outlet of the fluid pipeline is equipped with a thermometer and a pressure meter. The first-stage heating heat exchanger is an electric heating heat exchanger or a fluid heating heat exchanger. The first-stage cooling heat exchanger is a thermoelectric cooling heat exchanger.

[0021] It can be seen that the heat exchanger assembly of the ablation therapy device provided by the present invention can output high-temperature or low-temperature fluid according to demand by adding a first-level cooling heat exchanger and a first-level heating heat exchanger to the fluid pipeline, and adding a second-level cooling heat exchanger, which improves the utilization rate and use efficiency of the equipment and realizes the high and low temperature output of the heat exchanger assembly of the ablation therapy device; the second-level cooling heat exchanger is a cooling heat exchanger with adjustable pipeline length, which expands the minimum output temperature range of the heat exchanger assembly of the ablation therapy device, and outputs fluids of corresponding different temperatures through heat exchange pipelines of different lengths, so that the adjustment accuracy of parameters such as the outlet temperature is higher, and the temperature fluctuation is smaller during adjustment. Combined with the first-level cooling heat exchanger, the precise control of the fluid temperature is improved, so that the entire cooling capacity and temperature adjustment are smooth and the response is fast. In addition, the first-level cooling heat exchanger preferably adopts a thermoelectric cooling heat exchanger, which adjusts the cooling capacity by adjusting the working current, and responds quickly, is easy to control, and is convenient to adjust. Installing a proportional control valve at the inlet of the fluid pipeline can control the flow rate of the fluid, adjust the output temperature, and effectively control the output power of the fluid. A secondary heating heat exchanger can be added to the fluid pipeline to further expand the maximum output temperature range of the heat exchanger assembly of the ablation therapy device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a heat exchanger assembly of an ablation treatment device according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a structural diagram of another heat exchanger assembly of an ablation treatment device according to the first embodiment of the present invention;

[0024] Figure 3 This is a structural diagram of a heat exchanger assembly of an ablation treatment device according to a second embodiment of the present invention;

[0025] Figure 4This is a structural diagram of a heat exchanger assembly of an ablation treatment device according to the third embodiment of the present invention;

[0026] Figure 5 This is a structural diagram of a first ablation therapy device heat exchanger assembly according to Embodiment 4 of the present invention;

[0027] Figure 6 This is a structural diagram of a second heat exchanger assembly of an ablation treatment device according to a fourth embodiment of the present invention;

[0028] Figure 7 This is a structural diagram of a third heat exchanger assembly of an ablation treatment device according to the fourth embodiment of the present invention;

[0029] Figure 8 This is a structural diagram of a fourth heat exchanger assembly of an ablation treatment device according to the fourth embodiment of the present invention;

[0030] Among them, 1-fluid pipeline, 11-first fluid pipeline, 12-second fluid pipeline, 2-first-stage refrigeration heat exchanger, 3-first-stage heating heat exchanger, 4-second-stage refrigeration heat exchanger, 4A-first refrigeration heat exchanger, 4B second refrigeration heat exchanger, 4C-third refrigeration heat exchanger, 41-input pipeline, 41A-first input branch pipeline, 41B-second input branch pipeline, 41C-third input branch pipeline, 42-output pipeline, 42A-first output branch pipeline, 42B-second output branch pipeline, 42C-third output branch pipeline, 43-heat exchange pipeline, 44-second valve, 5-first valve, 6-proportional pressure regulating valve, 71-temperature meter, 72-pressure meter. DETAILED DESCRIPTION

[0031] The following is a further detailed description of a heat exchanger assembly for an ablation therapy device proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer based on the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, in the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0034] Embodiment 1

[0035] See also Figure 1 , which is a structural diagram of a heat exchanger assembly of an ablation therapy device in this embodiment. The heat exchanger assembly of the ablation therapy device in this embodiment includes a primary cooling heat exchanger 2, a primary heating heat exchanger 3, a fluid pipeline 1 and a secondary cooling heat exchange device 4.

[0036] The primary refrigeration heat exchanger 2 is installed on the fluid pipeline 1 and is used to refrigerate the fluid in the fluid pipeline 1;

[0037] The primary heating heat exchanger 3 is installed on the fluid pipeline 1 and is used to heat the fluid in the fluid pipeline 1;

[0038] The installation locations of the primary cooling heat exchanger 2 and the primary heating heat exchanger 3 are close to the inlet of the fluid pipeline 1;

[0039] The secondary refrigeration heat exchange device 4 is a refrigeration heat exchanger with a heat exchange pipeline 43 of variable length, and the input pipeline and the output pipeline of the secondary refrigeration heat exchange device 4 are respectively connected to the fluid pipeline 1;

[0040] The installation location of the secondary refrigeration heat exchange device 4 is close to the outflow port of the fluid pipeline 1 .

[0041] The primary cooling heat exchanger 2 and the primary heating heat exchanger 3 are installed in parallel on the fluid pipeline 1, and a proportional pressure regulating valve 6 is installed before the inlet of the primary cooling heat exchanger 2 and the primary heating heat exchanger 3. The proportional pressure regulating valve 6 can control the pressure in the fluid pipeline 1, and then control the flow rate of the fluid, thereby regulating and adjusting the temperature of the fluid.

[0042] In addition, the ablation therapy device heat exchanger assembly also includes a plurality of thermometers 71 and pressure meters 72, which are installed on the fluid pipeline 1 and are used to measure the temperature and pressure of the fluid in the fluid pipeline 1, respectively. The thermometer 71 and the pressure meter 72 are installed on the fluid pipeline 1 near its inlet and outlet. Figure 1 As shown, a temperature measuring instrument 71 and a pressure measuring instrument 72 are installed at the outlet of the primary cooling heat exchanger 2 and the primary heating heat exchanger 3, which can respectively measure the temperature and pressure of the fluid in the fluid pipeline 1 after being processed by the primary cooling heat exchanger 2 or the primary heating heat exchanger 3, and monitor the fluid heat exchange process in real time. The temperature measuring instrument 71 and the pressure measuring instrument 72 are also installed at the outlet of the fluid pipeline 1 to detect the final temperature and pressure of the output fluid in the fluid pipeline 1.

[0043] Optionally, the primary heating heat exchanger 3 may be an electric heating heat exchanger or a fluid heating heat exchanger; the primary cooling heat exchanger 2 may be a thermoelectric cooling heat exchanger. Of course, the present invention does not limit the specific types of the primary cooling heat exchanger 2 and the primary heating heat exchanger 3, and technicians may select them according to actual needs.

[0044] Specifically, the secondary refrigeration heat exchange device 4 is a refrigeration heat exchanger including a plurality of input branch pipelines and an output pipeline 42, such as Figure 1 As shown, the input branch pipeline includes a first input branch pipeline 41A, a second input branch pipeline 41B and a third input branch pipeline 41C. The three input branch pipelines (i.e., the first input branch pipeline 41A, the second input branch pipeline 41B and the third input branch pipeline 41C) are connected to heat exchange pipelines 43 at different positions in the secondary refrigeration heat exchange device 4. The input branch pipelines (i.e., the first input branch pipeline 41A, the second input branch pipeline 41B and the third input branch pipeline 41C) and the output pipeline 42 are connected to the fluid pipeline 1, and the input branch pipelines (i.e., the first input branch pipeline 41A, the second input branch pipeline 41B and the third input branch pipeline 41C) are all installed with a second valve 44. The first valve 5 is installed on the fluid pipeline 1 between the output pipeline 42 and the input branch pipeline closest to the output pipeline 42, from Figure 1 It can be seen that the input branch pipeline closest to the output pipeline 42 is the third input branch pipeline 41C. Of course, the number of input branch pipelines is not fixed, and technicians can adjust the specific number according to actual needs. Preferably, the first valve 5 and the second valve 44 can be selected from electromagnetic valves, switch valves and other devices to conduct or cut off the fluid in the pipeline.

[0045] When the secondary refrigeration heat exchange device 4 is in use, only one of the second valves 44 on the three input branch pipelines remains in an open state, and the rest are in a closed state. At the same time, the first valve 5 remains closed, and the fluid in the fluid pipeline 1 is further cooled by the secondary refrigeration heat exchange device 4. Therefore, the technician can change the length of the heat exchange pipeline 43 by opening or closing the second valve 44, and then change the temperature of the fluid. It should be noted that the length of the heat exchange pipeline 43 mentioned here refers to the length of the heat exchange pipeline 43 used when performing heat exchange work.

[0046] In particular, the second valve 44 can also be a three-way valve. Specifically, there are three three-way valves, which are respectively installed at the connection between the circulation pipeline 1 and the three input branch pipelines, wherein the inlet of any three-way valve and one of the outlets are connected to the circulation pipeline 1, and the other outlet is connected to one of the input branch pipelines. The three-way valve can only keep one outlet open at the same time, so when the fluid needs to pass through a certain input branch pipeline to enter the secondary refrigeration heat exchange device 4 for refrigeration, the outlet of the three-way valve on that input branch pipeline connected to the input branch pipeline remains open, and the outlets of the remaining three-way valves connected to the input branch pipeline remain closed. When the second valve 44 is a three-way valve, the first valve 5 can be removed, and the three-way valve on the third input branch pipeline 41C can play the role of the first valve 5.

[0047] It should be noted that the technician can also close the second valve 44 on the first input branch pipeline 41A, the second input branch pipeline 41B and the third input branch pipeline 41C, and open the first valve 5 to prevent the fluid in the fluid pipeline 1 from entering the secondary refrigeration heat exchange device 4 for further refrigeration.

[0048] like Figure 1 As shown, the primary cooling heat exchanger 2 and the primary heating heat exchanger 3 are installed in parallel on the fluid pipeline 1, and a proportional regulating valve 6 is installed on the fluid pipeline 1 before the inlet of the primary cooling heat exchanger 2 and the primary heating heat exchanger 3 respectively; Figure 2 As shown, the primary cooling heat exchanger 2 and the primary heating heat exchanger 3 are installed in series on the fluid pipeline 1. The present invention does not limit the installation order of the two. At the same time, a proportional control valve 6 is also installed on the fluid pipeline 1 between the two. The proportional control valve 6 can adjust the flow rate by adjusting the fluid pressure in the fluid pipeline 1. Since the energy of the fluid is reflected by controlling the temperature and the flow rate, the flow rate is effectively controlled, and the output energy is controlled.

[0049] Combination Figure 1 The specific method of using the heat exchanger assembly of the ablation treatment device shown is as follows:

[0050] All devices, valves and proportional control valves in the heat exchanger assembly of the ablation therapy device are in a closed state before use;

[0051] When the ablation device requires high-temperature fluid, the primary heating heat exchanger 3 is turned on, and the proportional regulating valve 6 at the upstream of the primary heating heat exchanger 3 and the valve 5 at the downstream are opened, and the medium fluid flows in from the inlet of the fluid pipeline 1, is heated by the primary heating heat exchanger 3, and finally flows out from the outlet of the outlet pipeline 1, completing the heating and heat exchange process;

[0052] When the ablation device requires low-temperature fluid, the first-level refrigeration heat exchanger 2 and the second-level refrigeration heat exchanger 4 are turned on, and the proportional control valve 6 upstream of the first-level heating heat exchanger 2, the valve on an input branch pipeline of the second-level refrigeration heat exchanger 4, and the valve on the output pipeline of the second-level refrigeration heat exchanger 4 are opened, and the medium fluid flows in from the inlet of the fluid pipeline 1, is cooled by the first-level refrigeration heat exchanger 2 and the second-level refrigeration heat exchanger 4, and finally flows out from the outlet of the outlet pipeline 1, completing the refrigeration and heat exchange process.

[0053] Preferably, the maximum temperature of the output fluid of the heat exchanger assembly of the ablation therapy device is 180°C, and the minimum temperature is -200°C.

[0054] Embodiment 2

[0055] See also Figure 3 , which is a structural diagram of the heat exchanger assembly of the ablation treatment device of the second embodiment. Different from the above embodiment, in this embodiment, the structure of the secondary refrigeration heat exchange device 4 and the connection method thereof with the fluid pipeline 1 are different.

[0056] like Figure 3 As shown, the secondary refrigeration heat exchange device 4 is a refrigeration heat exchanger including a plurality of output branch pipelines (i.e., a first output branch pipeline 42A, a second output branch pipeline 42B, and a third output branch pipeline 42C) and an input pipeline 41, wherein the plurality of output branch pipelines (i.e., the first output branch pipeline 42A, the second output branch pipeline 42B, and the third output branch pipeline 42C) are respectively connected to heat exchange pipelines 43 at different positions in the secondary refrigeration heat exchange device 4, and the plurality of output branch pipelines (i.e., the first output branch pipeline 42A, The second output branch pipeline 42B and the third output branch pipeline 42C) and the input pipeline 41 are connected to the fluid pipeline 1, and the output branch pipelines (i.e., the first output branch pipeline 42A, the second output branch pipeline 42B and the third output branch pipeline 42C) and the input pipeline 41 are all installed with a second valve 44 (preferably, the second valve can be a solenoid valve), and the first valve 5 is installed on the fluid pipeline 1 between the input pipeline 41 and the output branch pipeline closest to the input pipeline 41, Figure 3 It can be seen that the output branch pipeline closest to the input pipeline 41 is the first output branch pipeline 42A. Of course, the specific number of output branch pipelines can be adjusted by technicians according to needs.

[0057] When the secondary refrigeration heat exchange device 4 is in use, only one of the second valves 44 on the three output branch pipelines is kept in an open state, and the others are kept in a closed state. At the same time, the first valve 5 is kept closed, and the fluid in the fluid pipeline 1 is further cooled by the secondary refrigeration heat exchange device 4. Therefore, the technician can change the length of the heat exchange pipeline 43 by opening or closing the second valve 44, and then change the temperature of the fluid.

[0058] In particular, the second valve 44 may also be a three-way valve. Specifically, there are four three-way valves, which are respectively installed at the connection between the circulation pipeline 1 and the input pipeline and the three output branch pipelines, wherein the inlet and one of the outlets of any three-way valve are connected to the circulation pipeline 1, and the other outlet is connected to the input pipeline or one of the output branch pipelines. Similarly, when the second valve 44 is a three-way valve, the first valve 5 can be removed, and the three-way valve on the input pipeline 41 can play the role of the first valve 5.

[0059] Similarly, the technicians can also close the second valves 44 on the first output branch pipeline 42A, the second output branch pipeline 42B and the third output branch pipeline 42C, and open the first valve 5 to prevent the fluid in the fluid pipeline 1 from entering the secondary refrigeration heat exchange device 4 for further refrigeration.

[0060] exist Figure 3 In the heat exchanger assembly of the ablation therapy device, the first-level cooling heat exchanger 2 and the first-level heating heat exchanger 3 are installed in parallel on the fluid pipeline 1. Of course, as in Example 1, the first-level cooling heat exchanger 2 and the first-level heating heat exchanger 3 can also be installed in series on the fluid pipeline 1, which will not be described in detail in this embodiment.

[0061] Embodiment 3

[0062] See also Figure 4 , which is a structural diagram of the heat exchanger assembly of the ablation treatment device of the third embodiment. Different from the above embodiment, the secondary refrigeration heat exchange device 4 is a heat exchanger group including several refrigeration heat exchangers. Figure 4 It can be seen that the heat exchanger group includes a first refrigeration heat exchanger 4A, a second refrigeration heat exchanger 4B and a third refrigeration heat exchanger 4C, the length of the heat exchange pipeline in each refrigeration heat exchanger is different, the input pipeline and the output pipeline of the refrigeration heat exchanger are connected to the fluid pipeline, and the refrigeration heat exchangers are connected in parallel with each other, and the input pipeline of the refrigeration heat exchanger is installed with a second valve 44, and the first valve 5 is installed on the fluid pipeline 1 between the input pipeline farthest from the inlet of the fluid pipeline 1 and the output pipeline farthest from the outlet of the fluid pipeline 1. Of course, the number of refrigeration heat exchangers is not fixed and can be adjusted according to actual needs.

[0063] When the secondary refrigeration heat exchange device 4 is in use, only one of the second valves 44 on the three refrigeration heat exchangers is kept in an open state, and the others are kept in a closed state. At the same time, the first valve 5 is kept closed, and the fluid in the fluid pipeline 1 will be further cooled by any one of the refrigeration heat exchangers in the secondary refrigeration heat exchange device 4. Therefore, the technician can switch the fluid into the corresponding refrigeration heat exchanger by opening or closing the second valve 44, thereby changing the length of the heat exchange pipeline and changing the temperature of the fluid.

[0064] exist Figure 4 In the heat exchanger assembly of the ablation therapy device, the first-level cooling heat exchanger 2 and the first-level heating heat exchanger 3 are installed in parallel on the fluid pipeline 1. Of course, as in Example 1, the first-level cooling heat exchanger 2 and the first-level heating heat exchanger 3 can also be installed in series on the fluid pipeline 1, which will not be described in detail in this embodiment.

[0065] Embodiment 4

[0066] This embodiment is different from the above embodiment in that: the fluid pipeline 1 includes a first fluid pipeline 11 and a second fluid pipeline 12, wherein the first-stage heating heat exchanger 3 is installed on the first fluid pipeline 11; the first-stage refrigeration heat exchanger 2 and the second-stage refrigeration heat exchanger 4 are installed on the second fluid pipeline 12; and a first valve 5 is installed on the first fluid pipeline 11 after the outlet of the first-stage heating heat exchanger 3.

[0067] The first fluid pipeline 11 is used for high-temperature treatment of the fluid, and the second outlet pipeline 12 is used for low-temperature treatment of the fluid, thereby improving the high-low temperature conversion efficiency of the heat exchanger assembly of the ablation treatment equipment.

[0068] like Figure 5 As shown, the first fluid pipeline 11 and the second fluid pipeline 12 share a flow inlet and a flow outlet;

[0069] like Figure 8 As shown, the first fluid pipeline 11 and the second fluid pipeline 12 have an inlet and an outlet respectively;

[0070] like Figure 7 As shown, the first fluid pipeline 11 and the second fluid pipeline 12 share a flow inlet and each have a flow outlet;

[0071] like Figure 8 As shown, the first fluid pipeline 11 and the second fluid pipeline 12 share a flow outlet and each have a flow inlet.

[0072] It should be understood that when the first fluid pipeline 11 and the second fluid pipeline 12 each have an inlet, the first fluid pipeline 11 and the second fluid pipeline 12 can flow fluids of different media for heating or cooling respectively.

[0073] Proportional regulating valves 6 are installed at the inlets of the first fluid pipeline 11 and the second fluid pipeline 12 , and the proportional regulating valves 6 can control both the flow direction and the flow rate of the fluid.

[0074] In this embodiment, the secondary refrigeration heat exchange device 4 can be used Figure 1 , Figure 2 or Figure 3 The structure of the secondary refrigeration heat exchange device 4 shown will, of course, not be described in detail here.

[0075] In summary, the ablation therapy device heat exchanger assembly provided by the present invention can accurately output high-temperature or low-temperature fluid according to demand by installing a first-level refrigeration heat exchanger and a first-level heating heat exchanger on the fluid pipeline, and adding a second-level refrigeration heat exchanger, thereby improving the utilization rate and use efficiency of the equipment and realizing the high and low temperature output of the ablation therapy device heat exchanger assembly; by installing a second-level refrigeration heat exchange device with a variable length of the heat exchange pipeline on the fluid pipeline, the precise control of the fluid refrigeration temperature is improved; by installing a proportional regulating valve at the inlet of the fluid pipeline, the flow rate of the fluid can be controlled, the output temperature can be adjusted, and the output power of the fluid can be effectively controlled. A second-level heating heat exchanger can be added to the fluid pipeline to further expand the maximum output temperature range of the ablation therapy device heat exchanger assembly.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. 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 solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A heat exchanger assembly for an ablation treatment device, characterized in that: It includes a primary cooling heat exchanger, a primary heating heat exchanger, a fluid pipeline and an adjustable secondary cooling heat exchange device. The primary refrigeration heat exchanger is installed on the fluid pipeline and is used to refrigerate the fluid in the fluid pipeline; The primary heating heat exchanger is installed on the fluid pipeline and is used to heat the fluid in the fluid pipeline; The installation locations of the primary cooling heat exchanger and the primary heating heat exchanger are close to the inlet of the fluid pipeline; The input pipeline and the output pipeline of the secondary refrigeration heat exchange device are respectively connected to the fluid pipeline; The installation location of the secondary refrigeration heat exchange device is close to the outflow outlet of the fluid pipeline; The first-stage refrigeration heat exchanger and the first-stage heating heat exchanger are installed in series on the fluid pipeline; or the first-stage refrigeration heat exchanger and the first-stage heating heat exchanger are installed in parallel on the fluid pipeline; A proportional regulating valve is installed on the fluid pipeline in front of the inlet of the first-stage refrigeration heat exchanger and / or the first-stage heating heat exchanger.

2. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The secondary refrigeration heat exchange device is a refrigeration heat exchanger including multiple input branch pipelines and an output pipeline. The multiple input branch pipelines are connected to the heat exchange pipelines at different positions in the refrigeration heat exchanger. A first valve is installed on the fluid pipeline between the output pipeline and the input branch pipeline closest to the output pipeline. The input branch pipeline and the output pipeline are connected to the fluid pipeline, and the input branch pipelines are both installed with a second valve.

3. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The secondary refrigeration heat exchange device is a refrigeration heat exchanger including multiple output branch pipelines and an input pipeline. The multiple output branch pipelines are connected to the heat exchange pipelines at different positions in the refrigeration heat exchanger. A first valve is installed on the fluid pipeline between the input pipeline and the output branch pipeline closest to the input pipeline. The output branch pipeline and the input pipeline are connected to the fluid pipeline, and the output branch pipeline and the input pipeline are both installed with a second valve.

4. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The secondary refrigeration heat exchange device is a heat exchanger group including several refrigeration heat exchangers, the heat exchange pipelines in each of the refrigeration heat exchangers have different lengths, the input pipeline and the output pipeline of the refrigeration heat exchanger are connected to the fluid pipeline, a first valve is installed on the fluid pipeline between the input pipeline farthest from the fluid pipeline inlet and the output pipeline farthest from the fluid pipeline outlet, the refrigeration heat exchangers are connected in parallel with each other, and a second valve is installed on the input pipeline of each refrigeration heat exchanger.

5. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The ablation therapy device heat exchanger assembly also includes a secondary heating heat exchanger, which is installed on the fluid pipeline after the outlet of the primary heating heat exchanger.

6. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The fluid pipeline includes a first fluid pipeline and a second fluid pipeline, wherein the first-stage heating heat exchanger is installed on the first fluid pipeline; the first-stage refrigeration heat exchanger and the second-stage refrigeration heat exchange device are installed on the second fluid pipeline; and a first valve is installed on the first fluid pipeline after the outlet of the first-stage heating heat exchanger.

7. The ablation therapy device heat exchanger assembly according to claim 6, characterized in that: The first fluid pipeline and the second fluid pipeline share an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline each have an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline share an inlet and each have an outlet; or the first fluid pipeline and the second fluid pipeline share an outlet and each have an inlet.

8. The ablation therapy device heat exchanger assembly according to claim 1, characterized in that: The ablation therapy device heat exchanger assembly also includes a number of thermometers and pressure meters. The outlets of the first-level cooling heat exchanger and the first-level heating heat exchanger are both equipped with thermometers and pressure meters. The outlet of the fluid pipeline is equipped with a thermometer and a pressure meter. The first-level heating heat exchanger is an electric heating heat exchanger or a fluid heating heat exchanger. The first-level cooling heat exchanger is a thermoelectric cooling heat exchanger.

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