CN111110342A - Heat exchanger assembly of ablation treatment equipment - Google Patents
Heat exchanger assembly of ablation treatment equipment Download PDFInfo
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- CN111110342A CN111110342A CN202010033686.XA CN202010033686A CN111110342A CN 111110342 A CN111110342 A CN 111110342A CN 202010033686 A CN202010033686 A CN 202010033686A CN 111110342 A CN111110342 A CN 111110342A
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- 238000011298 ablation treatment Methods 0.000 title claims abstract description 42
- 239000012530 fluid Substances 0.000 claims abstract description 201
- 238000005057 refrigeration Methods 0.000 claims abstract description 137
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000010317 ablation therapy Methods 0.000 claims 4
- 238000002679 ablation Methods 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000315 cryotherapy Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00714—Temperature
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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Abstract
The invention provides a heat exchanger assembly of ablation treatment equipment, which comprises a primary refrigeration heat exchanger, a primary heating heat exchanger, a fluid pipeline and a secondary refrigeration heat exchange device, wherein the primary refrigeration heat exchanger is arranged on the fluid pipeline and is used for refrigerating fluid in the fluid pipeline; the primary heating heat exchanger is arranged on the fluid pipeline and used for heating fluid in the fluid pipeline; the installation positions of the first-stage refrigeration heat exchanger and the first-stage heating heat exchanger are close to the inflow ports of the fluid pipelines; the second-stage refrigeration heat exchange device is a refrigeration heat exchanger with a variable heat exchange pipeline length, and an input pipeline and an output pipeline of the second-stage refrigeration heat exchange device are respectively communicated with the fluid pipeline; the secondary refrigeration heat exchange device is arranged close to the outflow port of the fluid pipeline. The heat exchanger assembly of the ablation treatment equipment solves the problems that the ablation equipment in the prior art can only be singly frozen or singly heated, the temperature of output fluid of the heat exchanger in the ablation equipment cannot be accurately controlled, and the like.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a heat exchanger assembly of ablation treatment equipment for medical cold and hot ablation equipment.
Background
Methods of thermal ablation are commonly used for a variety of medical purposes. For example, cryotherapy, hyperthermia, or combined cryotherapy to destroy tissue can be used for dermatological, solid tumor, electrophysiological arrhythmia treatment. Cold or hot ablation generally refers to physical ablation, including both heat and cold ablation.
The type and outcome of tissue cell damage is influenced by several parameters during the treatment process. These parameters may include the duration of the thermal ablation, treatment temperature, ramp rate, treated tissue size, and cycle number.
The output fluid of the heat exchanger of the existing cold and hot ablation equipment has two types of constant flow output and variable flow output, and the temperature of the fluid at the outlet of the heat exchanger is not accurately controlled by the equipment with any output type. That is, there is no way to control the minimum temperature or rate of temperature increase or decrease and the amount of energy input during the procedure. In addition, many ablation devices have single function, single freezing or single heating at present, and the latest research combines cold and hot ablation, so that the tissue is firstly thermally ablated and then cryoablated, the range can be smaller, more macromolecules after the tissue necrosis are reserved, and the function of stimulating the immune function can be played to the maximum.
Disclosure of Invention
The invention provides a heat exchanger assembly of ablation treatment equipment, which is used for solving the problems that the ablation equipment in the prior art can only be singly frozen or singly heated, the temperature of output fluid of a heat exchanger in the ablation equipment cannot be accurately controlled, and the like.
In order to solve the problems, the invention provides a heat exchanger assembly of ablation treatment equipment, which comprises a primary refrigeration heat exchanger, a primary heating heat exchanger, a fluid pipeline and an adjustable secondary refrigeration heat exchange device,
the primary refrigeration heat exchanger is arranged on the fluid pipeline and is used for refrigerating fluid in the fluid pipeline;
the primary heating heat exchanger is arranged on the fluid pipeline and used for heating the fluid in the fluid pipeline;
the installation positions of the primary refrigeration heat exchanger and the primary heating heat exchanger are close to the inflow port of the fluid pipeline;
the input pipeline and the output pipeline of the secondary refrigeration heat exchange device are respectively communicated with the fluid pipeline;
the installation position of the secondary refrigeration heat exchange device is close to the outflow port of the fluid pipeline.
Optionally, the second-stage refrigeration heat exchange device is a refrigeration heat exchanger including a plurality of input branch pipelines and an output pipeline, the plurality of input branch pipelines are communicated with heat exchange pipelines at different positions in the refrigeration heat exchanger, the output pipeline is closest to the output pipeline, a first valve is installed on the fluid pipeline between the input branch pipelines, the input branch pipelines are communicated with the output pipeline, and the input branch pipelines are all provided with second valves.
Optionally, the second-stage refrigeration heat exchange device is a refrigeration heat exchanger comprising a plurality of output branch pipelines and an input pipeline, the plurality of output branch pipelines are communicated with heat exchange pipelines at different positions in the refrigeration heat exchanger, the input pipeline is closest to the input pipeline, a first valve is installed on the fluid pipeline between the output branch pipelines, the output branch pipelines are communicated with the input pipeline, and second valves are installed on the output branch pipelines and the input pipeline.
Optionally, the second-stage refrigeration heat exchange device is a heat exchanger group including a plurality of refrigeration heat exchangers, the lengths of heat exchange pipelines in the refrigeration heat exchangers are different, an input pipeline and an output pipeline of each refrigeration heat exchanger are communicated with the fluid pipeline, the input pipeline which is farthest from the inflow port of the fluid pipeline and the output pipeline which is farthest from the outflow port of the fluid pipeline are provided with first valves on the fluid pipeline, the refrigeration heat exchangers are connected in parallel, and the input pipeline of each refrigeration heat exchanger is provided with second valves.
Optionally, the primary refrigeration heat exchanger and the primary heating heat exchanger are installed in series on a fluid pipeline; or the primary refrigeration heat exchanger and the primary heating heat exchanger are installed on a fluid pipeline in parallel.
Optionally, the heat exchanger assembly of the ablation treatment device further comprises a second-stage heating heat exchanger, and the second-stage heating heat exchanger is mounted on the fluid pipeline behind the outlet of the first-stage heating heat exchanger.
Optionally, a proportional regulating valve is installed on a fluid pipeline in front of the inflow port of the primary refrigeration heat exchanger and/or the primary heating heat exchanger.
Optionally, the fluid lines include a first fluid line and a second fluid line, wherein the primary heating heat exchanger is mounted on the first fluid line; the primary refrigeration heat exchanger and the secondary refrigeration heat exchange device are arranged on the second fluid pipeline; and a first valve is arranged on the first fluid pipeline behind the outlet of the primary heating heat exchanger.
Optionally, the first fluid line and the second fluid line share an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline are respectively provided with an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline share an inlet and are respectively provided with an outlet; or the first fluid pipeline and the second fluid pipeline share an outlet and are respectively provided with an inlet.
Optionally, the heat exchanger assembly of the ablation treatment device further comprises a plurality of temperature measuring instruments and pressure measuring instruments, the temperature measuring instruments and the pressure measuring instruments are installed at the outlets of the primary refrigeration heat exchanger and the primary heating heat exchanger, and the temperature measuring instruments and the pressure measuring instruments are installed at the flow outlet of the fluid pipeline; the primary heating heat exchanger is an electric heating heat exchanger or a fluid heating heat exchanger; the primary refrigeration heat exchanger is a thermoelectric refrigeration heat exchanger.
Therefore, the heat exchanger assembly of the ablation treatment equipment provided by the invention has the advantages that the primary refrigeration heat exchanger and the primary heating heat exchanger are additionally arranged on the fluid pipeline, and the secondary refrigeration heat exchange device is additionally arranged, so that high temperature or low temperature fluid can be output according to requirements, the utilization rate and the use efficiency of the equipment are improved, and the high-low temperature output of the heat exchanger assembly of the ablation treatment equipment is realized; the second-stage refrigeration heat exchange device is the refrigeration heat exchange device with the adjustable pipeline length, the lowest output temperature range of the heat exchanger assembly of the ablation treatment equipment is expanded, fluids with corresponding different temperatures are output through heat exchange pipelines with different lengths, so that the adjustment precision of parameters such as outlet temperature is higher, the temperature fluctuation is smaller during adjustment, the accurate control of the fluid temperature is improved by combining the first-stage refrigeration heat exchanger, the whole cold quantity and temperature are adjusted smoothly, and the response is rapid. In addition, the first-stage refrigeration heat exchanger preferably adopts a thermoelectric refrigeration heat exchanger, the refrigerating capacity is adjusted by adjusting the working current, and the device is quick in response, easy to control and convenient to adjust. The proportional control valve is arranged at the inflow port of the fluid pipeline, so that the flow of the fluid can be controlled, the output temperature can be regulated, and the output power of the fluid can be effectively controlled. A secondary heating heat exchanger can be added on the fluid pipeline, so that the maximum output temperature range of the heat exchanger assembly of the ablation treatment equipment can be further expanded.
Drawings
FIG. 1 is a block diagram of a heat exchanger assembly of an ablation treatment apparatus according to a first embodiment of the present invention;
FIG. 2 is a block diagram of another heat exchanger assembly of an ablation treatment apparatus in accordance with a first embodiment of the invention;
FIG. 3 is a block diagram of a heat exchanger assembly of an ablation treatment apparatus according to a second embodiment of the present invention;
FIG. 4 is a block diagram of a heat exchanger assembly of an ablation treatment apparatus according to a third embodiment of the present invention;
FIG. 5 is a block diagram of a heat exchanger assembly of a first ablation treatment device in accordance with a fourth embodiment of the present invention;
FIG. 6 is a block diagram of a heat exchanger assembly of a second ablation treatment device in accordance with a fourth embodiment of the present invention;
FIG. 7 is a block diagram of a heat exchanger assembly of a third ablation treatment device in accordance with a fourth embodiment of the invention;
FIG. 8 is a block diagram of a fourth ablation treatment device heat exchanger assembly in accordance with a fourth embodiment of the present invention;
the system comprises a 1-fluid pipeline, a 11-first fluid pipeline, a 12-second fluid pipeline, a 2-first-stage refrigeration heat exchanger, a 3-first-stage heating heat exchanger, a 4-second-stage refrigeration heat exchange device, a 4A-first refrigeration heat exchanger, a 4B second refrigeration heat exchanger, a 4C-third refrigeration heat exchanger, a 41-input pipeline, a 41A-first input branch pipeline, a 41B-second input branch pipeline, a 41C-third input branch pipeline, a 42-output pipeline, a 42A-first output branch pipeline, a 42B-second output branch pipeline, a 42C-third output branch pipeline, a 43-heat exchange pipeline, a 44-second valve, a 5-first valve, a 6-proportional pressure regulating valve, a 71-temperature measuring instrument and a 72-pressure measuring instrument.
Detailed Description
The heat exchanger assembly of the ablation treatment device provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example one
Referring to fig. 1, a heat exchanger assembly of an ablation treatment apparatus of the present embodiment is illustrated in block diagram form. The heat exchanger assembly of the ablation treatment equipment of the embodiment comprises a primary refrigeration heat exchanger 2, a primary heating heat exchanger 3, a fluid pipeline 1 and a secondary refrigeration heat exchange device 4,
the primary refrigeration heat exchanger 2 is arranged on the fluid pipeline 1 and is used for refrigerating fluid in the fluid pipeline 1;
the primary heating heat exchanger 3 is arranged on the fluid pipeline 1 and is used for heating fluid in the fluid pipeline 1;
the installation positions of the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3 are close to the inflow ports of the fluid pipeline 1;
the secondary refrigeration heat exchange device 4 is a refrigeration heat exchanger with a variable length heat exchange pipeline 43, and an input pipeline and an output pipeline of the secondary refrigeration heat exchange device 4 are respectively communicated with the fluid pipeline 1;
the secondary refrigeration heat exchange device 4 is arranged close to the outflow port of the fluid pipeline 1.
The primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3 are installed on the fluid pipeline 1 in parallel, and proportional pressure regulating valves 6 are respectively installed in front of inlets of the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3. The proportional pressure regulating valve 6 can control the pressure in the fluid line 1 and thus the flow of the fluid, thereby regulating the temperature of the control and regulation fluid.
In addition, the heat exchanger assembly of the ablation treatment device further comprises a plurality of temperature measuring instruments 71 and pressure measuring instruments 72, wherein the temperature measuring instruments 71 and the pressure measuring instruments 72 are mounted on the fluid pipeline 1 and are respectively used for measuring the temperature and the pressure of the fluid in the fluid pipeline 1. The temperature and load detectors 71 and 72 are mounted to the fluid line 1 near the inlet and outlet thereof. As shown in fig. 1, a temperature measuring instrument 71 and a pressure measuring instrument 72 are installed at the outlets of the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3, and can respectively measure the temperature and the pressure of the fluid in the fluid pipeline 1 after being processed by the primary refrigeration heat exchanger 2 or the primary heating heat exchanger 3, so as to monitor the heat exchange process of the fluid in real time. The flow outlet of the fluid pipeline 1 is also provided with the temperature detector 71 and the pressure detector 72 for detecting the final temperature and pressure of the output fluid in the fluid pipeline 1.
Optionally, the primary heating heat exchanger 3 may be an electric heating heat exchanger or a fluid heating heat exchanger; the primary refrigeration heat exchanger 2 may be a thermoelectric refrigeration heat exchanger. Of course, the present invention is not limited to the specific types of the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3, and the skilled person can select the type according to actual needs.
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, as shown in fig. 1, the input branch pipelines include 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 communicated with 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 communicated with 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 provided with second valves 44, the first valve 5 is mounted on the fluid line 1 between the outlet line 42 and the inlet branch line closest to the outlet line 42, and as can be seen from fig. 1, the inlet branch line closest to the outlet line 42 is a third inlet branch line 41C. Of course, the number of input branch pipes is not fixed, and the specific number of input branch pipes can be adjusted by technicians according to actual requirements. Preferably, the first valve 5 and the second valve 44 can be electromagnetic valves, switch valves, etc. for connecting or disconnecting the fluid in the pipeline.
In the use process of the secondary refrigeration heat exchange device 4, only one of the second valves 44 on the three input branch pipelines is kept in an open state, the rest of the second valves are all in a closed state, meanwhile, the first valve 5 is kept closed, and the fluid in the fluid pipeline 1 can be further refrigerated through the secondary refrigeration heat exchange device 4. The technician can change the length of the heat exchange line 43 by opening or closing the second valve 44, and thus can change the temperature of the fluid. It should be noted that the length of the heat exchange line 43 is a length used for the heat exchange operation of the heat exchange line 43.
Specifically, the second valve 44 may be a three-way valve. Specifically, the three-way valves are 3 in number and are respectively installed at the joints of the flow pipeline 1 and the three input branch pipelines, wherein an inlet and one outlet of any one of the three-way valves are communicated with the flow pipeline 1, and the other outlet is communicated with one of the input branch pipelines. The three-way valves can only keep one outlet open at the same time, so when fluid needs to enter the secondary refrigeration heat exchange device 4 for refrigeration through a certain input branch pipeline, the three-way valve on the input branch pipeline and the outlet communicated with the input branch pipeline are kept open, and the other three-way valves and the outlets communicated with the input branch pipeline are kept closed. When the second valve 44 is a three-way valve, the first valve 5 may be eliminated, and the three-way valve on the third input branch line 41C may function as the first valve 5.
It should be noted that, a technician may also close the second valves 44 on the first input branch line 41A, the second input branch line 41B and the third input branch line 41C, and open the first valve 5, so as to prevent the fluid in the fluid line 1 from entering the secondary refrigeration heat exchange device 4 for further refrigeration.
As shown in fig. 1, the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3 are installed in parallel on a fluid pipeline 1, and a proportional regulating valve 6 is respectively installed on the fluid pipeline 1 in front of the inlets of the primary refrigeration heat exchanger 2 and the primary heating heat exchanger 3; as shown in fig. 2, the primary refrigerant heat exchanger 2 and the primary heating heat exchanger 3 are installed in series on the fluid line 1, and the installation order of the two is not limited in the present invention, and the proportional control valve 6 is also installed on the fluid line 1 before the two. The proportional regulating valve 6 can regulate the flow rate by regulating the fluid pressure in the fluid line 1. Because the energy of the fluid is embodied by controlling the temperature and controlling the flow, the flow is effectively controlled, and the output energy is controlled.
The heat exchanger assembly of the ablation treatment device shown in fig. 1 is specifically used in the following way:
before use, all devices, valves and proportion regulating valves in the heat exchanger assembly of the ablation treatment equipment are in a closed state;
when the ablation equipment needs high-temperature fluid, the primary heating heat exchanger 3 is opened, a proportional control valve 6 at the upstream part and a valve 5 at the downstream part of the primary heating heat exchanger 3 are opened, medium fluid flows in from an inflow port of the fluid pipeline 1, is heated by the primary heating heat exchanger 3 and finally flows out from an outflow port of the fluid pipeline 1, and the heating and heat exchange process is completed;
when the ablation equipment needs low-temperature fluid, the primary refrigeration heat exchanger 2 and the secondary refrigeration heat exchange device 4 are opened, a proportional control valve 6 at the upstream of the primary heating heat exchanger 2, a valve on a certain input branch pipeline of the secondary refrigeration heat exchange device 4 and a valve on an output pipeline of the secondary refrigeration heat exchange device 4 are opened, medium fluid flows in from an inflow port of the fluid pipeline 1, is refrigerated through the primary refrigeration heat exchanger 2 and the secondary refrigeration heat exchange device 4, and finally flows out from an outflow port of the pipeline 1, and the refrigeration and heat exchange processes are completed.
Preferably, the maximum temperature of the fluid output by the heat exchanger assembly of the ablation treatment device is 180 ℃ and the minimum temperature is-200 ℃.
Example two
Referring to fig. 3, a structure diagram of the heat exchanger assembly of the ablation treatment device of the second embodiment is shown. The difference from the above embodiment is: in this embodiment, the structure of the secondary refrigeration heat exchanger 4 and the connection manner between the secondary refrigeration heat exchanger and the fluid pipeline 1 are different.
As shown in fig. 3, the secondary refrigeration heat exchange device 4 is a refrigeration heat exchanger including a plurality of output branch pipes (i.e., a first output branch pipe 42A, a second output branch pipe 42B, and a third output branch pipe 42C) and an input pipe 41, the plurality of output branch pipes (i.e., the first output branch pipe 42A, the second output branch pipe 42B, and the third output branch pipe 42C) are respectively communicated with heat exchange pipes 43 at different positions in the secondary refrigeration heat exchange device 4, the plurality of output branch pipes (i.e., the first output branch pipe 42A, the second output branch pipe 42B, and the third output branch pipe 42C) and the input pipe 41 are communicated with the fluid pipe 1, and the output branch pipes (i.e., the first output branch pipe 42A, the second output branch pipe 42B, and the third output branch pipe 42C) and the input pipe 41 are respectively provided with a second valve 44 (preferably, a second valve, which may be a solenoid valve), the first valve 5 is installed on the fluid line 1 between the input line 41 and the output branch line closest to the input line 41, and as can be seen from fig. 3, the output branch line closest to the input line 41 is a first output branch line 42A. Of course, the specific number of outlet branch lines can be adjusted by the skilled person as required.
In the use process of the secondary refrigeration heat exchange device 4, only one of the second valves 44 on the three output branch pipelines is kept in an open state, the rest of the second valves are all in a closed state, meanwhile, the first valve 5 is kept closed, and the fluid in the fluid pipeline 1 can be further refrigerated through the secondary refrigeration heat exchange device 4. The technician can change the length of the heat exchange line 43 by opening or closing the second valve 44, and thus can change the temperature of the fluid.
Specifically, the second valve 44 may be a three-way valve. Specifically, the three-way valves are 4 in number and are respectively installed at the joints of the flow pipeline 1, the input pipeline and the three output branch pipelines, wherein an inlet and one outlet of any one of the three-way valves are communicated with the flow pipeline 1, and the other outlet is communicated with 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 may be eliminated, and the three-way valve in the input line 41 may function as the first valve 5.
Similarly, the technician may also close the second valves 44 on the first output branch line 42A, the second output branch line 42B and the third output branch line 42C, and open the first valve 5, so as to prevent the fluid in the fluid line 1 from entering the secondary refrigeration heat exchange device 4 for further refrigeration.
In the heat exchanger assembly of the ablation treatment device in fig. 3, the primary refrigerating heat exchanger 2 and the primary heating heat exchanger 3 are installed on the fluid pipeline 1 in parallel, but it is also possible to install the primary refrigerating heat exchanger 2 and the primary heating heat exchanger 3 on the fluid pipeline 1 in series as in the first embodiment, which is not described in detail.
EXAMPLE III
Referring to fig. 4, a structure diagram of a heat exchanger assembly of the ablation treatment device of the third embodiment is shown. The difference from the above embodiment is: the secondary refrigeration heat exchange device 4 is a heat exchanger group comprising a plurality of refrigeration heat exchangers. As can be seen from fig. 4, 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 lengths of heat exchange pipelines in each refrigeration heat exchanger are different, an input pipeline and an output pipeline of each refrigeration heat exchanger are communicated with the fluid pipeline, the refrigeration heat exchangers are connected in parallel, the input pipeline of each refrigeration heat exchanger is provided 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 the refrigeration heat exchangers is not fixed, and can be adjusted according to actual requirements.
In the use process of the secondary refrigeration heat exchange device 4, only one of the second valves 44 on the three refrigeration heat exchangers is kept in an open state, the rest of the second valves are all in a closed state, meanwhile, the first valve 5 is kept closed, and the fluid in the fluid pipeline 1 can be further refrigerated through any one refrigeration heat exchanger in the secondary refrigeration heat exchange device 4. Thus, the technician can change the fluid temperature by switching the fluid into the corresponding refrigeration heat exchanger by opening or closing the second valve 44, thereby changing the length of the heat exchange line.
In the heat exchanger assembly of the ablation treatment device in fig. 4, the primary refrigerating heat exchanger 2 and the primary heating heat exchanger 3 are installed on the fluid pipeline 1 in parallel, but it is also possible to install the primary refrigerating heat exchanger 2 and the primary heating heat exchanger 3 on the fluid pipeline 1 in series as in the first embodiment, which is not described in detail.
Example four
The present embodiment is different from the above embodiments in that: the fluid circuit 1 comprises a first fluid circuit 11 and a second fluid circuit 12, wherein the primary heat exchanger 3 is mounted on the first fluid circuit 11; the primary refrigeration heat exchanger 2 and the secondary refrigeration heat exchange device 4 are arranged on the second fluid pipeline 12; and a first valve 5 is arranged on the first fluid pipeline 11 behind the outlet of the primary heating heat exchanger 3.
The first fluid pipeline 11 is used for high-temperature treatment of fluid, and the second outlet pipeline 12 is used for low-temperature treatment of fluid, so that the high-temperature and low-temperature conversion efficiency of the heat exchanger assembly of the ablation treatment equipment is improved.
As shown in fig. 5, the first fluid line 11 and the second fluid line 12 share an inlet and an outlet;
as shown in fig. 8, the first fluid pipeline 11 and the second fluid pipeline 12 have an inlet and an outlet respectively;
as shown in fig. 7, the first fluid pipeline 11 and the second fluid pipeline 12 share an inlet and have an outlet respectively;
as shown in fig. 8, the first fluid line 11 and the second fluid line 12 share an outlet port and have an inlet port.
It should be understood that, when the first fluid pipeline 11 and the second fluid pipeline 12 have an inlet, the first fluid pipeline 11 and the second fluid pipeline 12 can circulate fluids of different mediums for heating or cooling respectively.
The proportional control valve 6 is installed at the inlet of each of the first fluid pipeline 11 and the second fluid pipeline 12, and the flow direction of the fluid can be controlled and the flow rate of the fluid can be controlled through the proportional control valve 6.
In this embodiment, the structure of the secondary refrigeration heat exchange device 4 shown in fig. 1, fig. 2 or fig. 3 can be adopted as the secondary refrigeration heat exchange device 4, and a detailed description thereof will not be provided here.
In summary, the heat exchanger assembly of the ablation treatment equipment provided by the invention has the advantages that the primary refrigeration heat exchanger and the primary heating heat exchanger are arranged on the fluid pipeline, and the secondary refrigeration heat exchanger is additionally arranged, so that high temperature or low temperature fluid can be accurately output according to requirements, the utilization rate and the use efficiency of the equipment are improved, and the high-low temperature output of the heat exchanger assembly of the ablation treatment equipment is realized; the secondary refrigeration heat exchange device with the length variable of the heat exchange pipeline is additionally arranged on the fluid pipeline, so that the accurate control of the fluid refrigeration temperature is improved; the proportional control valve is arranged at the inflow port of the fluid pipeline, so that the flow of the fluid can be controlled, the output temperature can be regulated, and the output power of the fluid can be effectively controlled. A secondary heating heat exchanger can be added on the fluid pipeline, so that the maximum output temperature range of the heat exchanger assembly of the ablation treatment equipment can be further expanded.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example" or "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A heat exchanger assembly of ablation treatment equipment is characterized by comprising a primary refrigeration heat exchanger, a primary heating heat exchanger, a fluid pipeline and an adjustable secondary refrigeration heat exchange device,
the primary refrigeration heat exchanger is arranged on the fluid pipeline and is used for refrigerating fluid in the fluid pipeline;
the primary heating heat exchanger is arranged on the fluid pipeline and used for heating the fluid in the fluid pipeline;
the installation positions of the primary refrigeration heat exchanger and the primary heating heat exchanger are close to the inflow port of the fluid pipeline;
the input pipeline and the output pipeline of the secondary refrigeration heat exchange device are respectively communicated with the fluid pipeline;
the installation position of the secondary refrigeration heat exchange device is close to the outflow port of the fluid pipeline.
2. The heat exchanger assembly of ablation treatment apparatus of claim 1 wherein said secondary refrigeration heat exchange means is a refrigeration heat exchanger comprising a plurality of inlet branch lines and an outlet branch line, said plurality of inlet branch lines communicating with heat exchange lines at different locations within said refrigeration heat exchanger, said fluid line between said outlet branch line and said inlet branch line closest to said outlet branch line having a first valve mounted thereon, said inlet branch line and said outlet branch line communicating with said fluid line, and said inlet branch lines each having a second valve mounted thereon.
3. The heat exchanger assembly of ablation treatment apparatus of claim 1 wherein said secondary refrigeration heat exchange means is a refrigeration heat exchanger comprising a plurality of outlet branch lines and an inlet line, said plurality of outlet branch lines communicating with heat exchange lines at different locations within said refrigeration heat exchanger, said inlet line and said outlet branch line nearest said inlet line having a first valve mounted thereon, said outlet branch line and said inlet line communicating with said fluid line, and said outlet branch line and said inlet line having a second valve mounted thereon.
4. The heat exchanger assembly of ablation treatment equipment according to claim 1, wherein the secondary refrigeration heat exchanger is a heat exchanger set comprising a plurality of refrigeration heat exchangers, the lengths of heat exchange pipelines in each refrigeration heat exchanger are different, the input pipeline and the output pipeline of each refrigeration heat exchanger are communicated with the fluid pipeline, a first valve is arranged on the fluid pipeline between the input pipeline farthest from the fluid pipeline inflow port and the output pipeline farthest from the fluid pipeline outflow port, the refrigeration heat exchangers are connected in parallel, and a second valve is arranged on each input pipeline of each refrigeration heat exchanger.
5. The ablation therapy apparatus heat exchanger assembly of claim 1, wherein the primary refrigeration heat exchanger is mounted in series with the primary heating heat exchanger on a fluid line; or the primary refrigeration heat exchanger and the primary heating heat exchanger are installed on a fluid pipeline in parallel.
6. The ablation treatment apparatus heat exchanger assembly of claim 1, further comprising a secondary heating heat exchanger mounted on a fluid line after the primary heating heat exchanger outlet.
7. The heat exchanger assembly of ablation therapy equipment according to claim 1, wherein a proportional regulating valve is installed on a fluid pipeline in front of the inflow port of the primary refrigeration heat exchanger and/or the primary heating heat exchanger.
8. The ablation therapy apparatus heat exchanger assembly of claim 1, wherein the fluid circuit comprises a first fluid circuit and a second fluid circuit, wherein the primary heating heat exchanger is mounted on the first fluid circuit; the primary refrigeration heat exchanger and the secondary refrigeration heat exchange device are arranged on the second fluid pipeline; and a first valve is arranged on the first fluid pipeline behind the outlet of the primary heating heat exchanger.
9. The ablation therapy apparatus heat exchanger assembly of claim 8, wherein the first fluid line and the second fluid line share an inlet port and an outlet port; or the first fluid pipeline and the second fluid pipeline are respectively provided with an inlet and an outlet; or the first fluid pipeline and the second fluid pipeline share an inlet and are respectively provided with an outlet; or the first fluid pipeline and the second fluid pipeline share an outlet and are respectively provided with an inlet.
10. The heat exchanger assembly of ablation treatment equipment according to claim 1, further comprising a plurality of temperature measuring instruments and pressure measuring instruments, wherein the temperature measuring instruments and the pressure measuring instruments are installed at the outlets of the primary refrigeration heat exchanger and the primary heating heat exchanger, and the temperature measuring instruments and the pressure measuring instruments are installed at the outlet of the fluid pipeline; the primary heating heat exchanger is an electric heating heat exchanger or a fluid heating heat exchanger; the primary refrigeration heat exchanger is a thermoelectric refrigeration heat exchanger.
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| CN202010033686.XA CN111110342A (en) | 2020-01-13 | 2020-01-13 | Heat exchanger assembly of ablation treatment equipment |
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| CN202010033686.XA CN111110342A (en) | 2020-01-13 | 2020-01-13 | Heat exchanger assembly of ablation treatment equipment |
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