Negative pressure steam fumigation equipment

Abstract

The invention provides a negative pressure steam fumigation device, comprising a negative pressure cooker, a heating unit and a steam pressure balance tank; the negative pressure cooker is used to generate a negative pressure environment and inject liquid medicine, and a medicine adding port, a steam outlet, a first pressure sensor, a first temperature sensor and a drain valve are respectively arranged on the negative pressure cooker, and the steam outlet of the negative pressure cooker is connected to the steam pressure balance tank through a steam delivery pipeline, and a negative pressure fan and a solenoid valve are installed on the steam delivery pipeline; the heating unit is used to heat the liquid medicine in the negative pressure cooker; the steam pressure balance tank is used to adjust the steam pressure, and a temperature sensor, a pressure sensor, a steam inlet and at least one steam outlet are arranged on the steam pressure balance tank, the steam inlet is connected to the outlet of the steam delivery pipeline, the steam outlet is connected to the steam outlet pipe, and a negative pressure fan and an air outlet valve are installed on the steam outlet pipe. The device reduces the temperature of steam generation through a decompression operation, reduces the damage to the medicinal properties of the liquid medicine, realizes pressure rebalancing and temperature regulation through the steam pressure balance tank, and finally outputs steam of suitable temperature.

Description

Technical Field

[0001] The invention relates to the field of fumigation therapy, and in particular to negative pressure steam fumigation equipment. Background Art

[0002] Traditional Chinese medicine fumigation therapy is also known as traditional Chinese medicine steaming therapy, traditional Chinese medicine steam bath therapy, medicine penetration therapy, hot mist therapy, etc.

[0003] Traditional Chinese medicine fumigation is a comprehensive chemical and physical therapy that uses hot medicinal steam as a therapeutic factor.

[0004] The more advanced fumigation treatment method currently available is ultrasonic atomization fumigation. However, ultrasonic atomization sheets are suitable for tap water. When used for Chinese medicine fumigation, the atomization sheets are easily damaged and fail to produce mist due to the effects of the medicine. The traditional heating method produces atomization, which will cause the water temperature to be too high, destroying the efficacy of the medicine. The mist temperature is even higher and will burn the skin.

[0005] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0006] The purpose of the present invention is to provide a negative pressure steam fumigation device which can protect the medicinal properties of drugs by reducing pressure, avoid excessive steam temperature and prevent steam waste.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a negative pressure steam fumigation device, including a negative pressure cooker, a heating unit and a steam pressure balance tank;

[0008] The negative pressure cooker is used to generate a negative pressure environment and inject liquid medicine. The interior of the negative pressure cooker is a closed cavity. The negative pressure cooker is respectively provided with a medicine adding port, a steam outlet, a first temperature sensor, a first pressure sensor and a drain valve. The steam outlet of the negative pressure cooker is connected to the steam pressure balance tank through a steam delivery pipeline. The steam delivery pipeline is equipped with a first negative pressure fan and a solenoid valve;

[0009] The heating unit is used to heat the liquid medicine in the negative pressure cooker;

[0010] The steam pressure balance tank is used to adjust the steam pressure. A second temperature sensor, a second pressure sensor, a steam inlet and at least one steam outlet are arranged on the steam pressure balance tank. The steam inlet is connected to the outlet of the steam delivery pipeline, and the steam outlet is connected to the steam outlet pipe. A second negative pressure fan and an air outlet valve are installed on the steam outlet pipe. A bubble breaker is installed at the steam outlet of the negative pressure cooker.

[0011] Based on the above, a steam circulation pipeline is connected between the negative pressure cooker and the steam pressure balance tank, and a circulation valve is installed on the steam circulation pipeline.

[0012] Based on the above, a pressure relief valve is also provided on the pressure balance tank.

[0013] Based on the above, the heating unit is an induction cooker or an electric heating wire which is externally arranged and close to the side wall and / or bottom surface of the negative pressure cooker, and the material of the side wall and the bottom surface of the negative pressure cooker is a heat conductive material.

[0014] Based on the above, the heating unit is a heat pipe or a heating wire built into the negative pressure cooker.

[0015] Based on the above, a reflux pipe is connected between the bottom end of the steam pressure balance tank and the negative pressure cooker, a reflux valve is installed on the reflux pipe, the bottom end of the steam pressure balance tank is inclined, and the inlet of the reflux pipe is arranged on the lower side of the bottom end of the steam pressure balance tank.

[0016] Based on the above, the first pressure sensor in the negative pressure cooker is associated with the circulation valve and the first negative pressure fan. According to the sensed pressure of the first pressure sensor, the rotation speed of the first negative pressure fan and the opening and closing of the circulation valve are controlled to achieve pressurization and temperature increase or decompression and temperature reduction in the negative pressure cooker.

[0017] Based on the above, a liquid level sensor is installed in the negative pressure cooker, and the liquid level sensor is associated with the dosing valve of the dosing port. According to the sensing signal of the liquid level sensor, the opening and closing of the dosing valve is controlled to realize automatic dosing.

[0018] Based on the above, the pot body of the negative pressure cooker is a double-layer structure, a flushing port is installed at the bottom of the negative pressure cooker, the flushing port forms an acute angle with the inner wall of the negative pressure cooker, so that the flushing water can form a vortex in the negative pressure cooker, and the outer surface of the negative pressure cooker is provided with a heat-insulating material.

[0019] Based on the above, an auxiliary heating device is installed in the steam pressure balance tank.

[0020] Compared with the prior art, the present invention has outstanding substantial features and significant progress. Specifically, the present invention designs a negative pressure cooker, which can form a negative pressure environment inside, thereby reducing the boiling temperature of the medicine liquid, and then reducing the temperature of the steam generated, protecting the medicinal properties of the medicine liquid from being destroyed to a certain extent; at the same time, a steam pressure balance tank is provided to rebalance the generated steam pressure. During the rebalancing process, due to the recovery of the air pressure, the steam temperature is reduced and finally output to achieve steam temperature regulation.

[0021] Furthermore, a steam circulation pipeline is connected between the steam pressure balance tank and the negative pressure cooker. When the temperature in the steam pressure balance tank is lower than the set temperature, or the steam is temporarily not output to the outside, the steam returns to the negative pressure cooker through the steam circulation pipeline for circulation heating to avoid waste.

[0022] Furthermore, the first pressure sensor, the first negative pressure fan and the circulation valve in the negative pressure cooker are connected together to achieve dynamic adjustment of the negative pressure environment in the negative pressure cooker.

[0023] Furthermore, a liquid level sensor is added to realize automatic drug addition; an auxiliary heating device is added to the steam pressure balance tank to realize steam heating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the negative pressure steam fumigation equipment in Example 1 of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the negative pressure steam fumigation equipment in Example 2 of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the negative pressure steam fumigation equipment in Example 4 of the present invention.

[0027] In the figure: 1. negative pressure cooker; 2. heating unit; 3. steam pressure balance tank; 4. first pressure sensor; 5. dosing port; 6. drain valve; 7. steam supply pipeline; 8. first negative pressure fan; 9. solenoid valve; 10. second temperature sensor; 11. second pressure sensor; 13. steam outlet; 14. second negative pressure fan; 15. air outlet valve; 16. pressure relief valve; 17. steam circulation pipeline; 18. circulation valve; 19. bubble breaker; 20. reflux pipe; 21. flushing port; 22. liquid level sensor; 23. first temperature sensor. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0029] Example 1

[0030] like Figure 1 As shown, a negative pressure steam fumigation device comprises a negative pressure cooker 1, a heating unit 2 and a steam pressure balance tank 3;

[0031] The negative pressure cooker is used to generate a negative pressure environment and inject liquid medicine. The interior of the negative pressure cooker 1 is a closed cavity. The negative pressure cooker is respectively provided with a medicine adding port 5, a steam outlet, a first temperature sensor 23, a first pressure sensor 4 and a drain valve 6. The steam outlet of the negative pressure cooker 1 is connected to the steam pressure balance tank 3 through a steam delivery pipe 7. The steam delivery pipe 7 is equipped with a first negative pressure fan 8 and a solenoid valve 9;

[0032] The heating unit 2 is used to heat the liquid medicine in the negative pressure cooker;

[0033] The steam pressure balance tank 3 is used to adjust the steam pressure. The steam pressure balance tank is provided with a second temperature sensor 10, a second pressure sensor 11, a steam inlet and at least one steam outlet 13. The steam inlet is connected to the outlet of the steam delivery pipeline, and the steam outlet 13 is connected to the steam outlet pipe. The steam outlet pipe is provided with a second negative pressure fan 14 and an air outlet valve 15. The steam delivery pipeline and the steam outlet pipe are both wrapped with a heat preservation layer. A bubble breaker 19 is provided at the steam outlet of the negative pressure cooker to prevent a small amount of water from entering the steam outlet above when the water boils.

[0034] In this embodiment, the main function of the first temperature sensor 23 is to monitor the temperature inside the negative pressure cooker, and the first pressure sensor is used to monitor the pressure inside the negative pressure cooker; the second temperature sensor 10 is used to monitor the temperature inside the steam pressure balance tank, and the second pressure sensor 11 is used to monitor the pressure inside the steam pressure balance tank.

[0035] The steam pressure balance tank 3 is also provided with a pressure relief valve 16 for performing pressure relief operation when too much steam is accumulated.

[0036] The heating unit 2 is an induction cooker or electric heating wire externally arranged close to the side wall and / or bottom of the negative pressure cooker. The side wall and bottom of the negative pressure cooker are made of heat-conductive material, and the outer surface of the negative pressure cooker is provided with heat-insulating material.

[0037] A flushing port 21 is installed at the bottom of the negative pressure cooker, and a control valve is installed on the flushing port. The flushing port 21 forms an acute angle with the inner wall of the negative pressure cooker so that flushing water can form a vortex in the negative pressure cooker for easier cleaning.

[0038] In other embodiments, the pot body of the negative pressure cooker is a double-layer structure, and the heating unit is a heat pipe or electric heating wire built into the negative pressure cooker.

[0039] Working principle: First, inject the medicine liquid into the negative pressure cooker, then turn on the first negative pressure fan and solenoid valve, and open the steam outlets on the steam pressure balance tank. After the negative pressure cooker is pumped into the required negative pressure environment, close the steam outlet on the steam pressure balance tank, and then start heating the medicine liquid. As the air pressure decreases, the boiling point of the medicine liquid decreases, and the vaporization temperature also decreases, eventually generating a large amount of vapor with drug components. Due to the low temperature, the medicinal properties of the drug are protected, effectively solving the problem of drug failure due to high-temperature decomposition.

[0040] Steam enters the steam pressure balance tank from the steam outlet and the steam delivery pipeline. The steam pressure balance tank is self-adjusting and performs pressure-boosting operation by replenishing air. During the pressure-boosting process, the temperature will drop and the steam volume will decrease until the final required temperature is met. Then, the steam outlet on the steam pressure balance tank is opened to discharge the steam for use.

[0041] Among them, since the temperature of the steam pressure balance tank decreases during the pressure boosting operation, a part of the steam will inevitably be lost and turned into water droplets. Therefore, a reflux pipe 20 is installed at the bottom of the steam pressure balance tank, connected to the negative pressure cooker, and the bottom end of the steam pressure balance tank is tilted, and the inlet of the reflux pipe is set on the lower side of the bottom end of the steam pressure balance tank, and the opening and closing are controlled by the reflux valve to achieve the reflux of the droplets.

[0042] Example 2

[0043] like Figure 2 As shown, a steam circulation pipeline 17 is connected between the negative pressure cooker 1 and the steam pressure balance tank 3, and a circulation valve 18 is installed on the steam circulation pipeline.

[0044] The main purpose of adding the steam circulation pipeline 17 is to perform circulation heating when the negative pressure in the pressure cooker is strong, causing the temperature to drop too much and the temperature does not meet the requirements. As the amount of steam increases, the negative pressure decreases and the temperature rises. After reaching the required negative pressure environment and temperature, it is adjusted and used again in the manner of Example 1.

[0045] In addition, when steam is not needed externally, the pipeline can also be opened, while reducing the heat supply of the heating unit, so that the steam circulates in a relatively stable environment. On the one hand, this is to avoid the cumbersome problem of completely shutting down and restarting the entire equipment, and on the other hand, it can ensure a relatively stable temperature. When it is needed next time, the temperature can be adjusted to the required temperature as quickly as possible for output.

[0046] Example 3

[0047] The difference from Example 2 is that: in order to improve the degree of automation, the first pressure sensor in the negative pressure cooker is associated with the circulation valve and the first negative pressure fan, and the speed of the first negative pressure fan and the opening and closing of the circulation valve are controlled according to the sensed pressure of the first pressure sensor, so as to achieve pressurization and temperature increase or decompression and temperature reduction in the negative pressure cooker.

[0048] In other words, the entire cycle startup process is automated. Once the pressure in the negative pressure cooker is too low or too high, it will affect the stable output of steam. At this time, the negative pressure cooker needs to be pressurized and heated or depressurized and cooled with the help of a circulation pipeline.

[0049] Example 4

[0050] like Figure 3 As shown, a liquid level sensor 22 is installed in the negative pressure cooker, and the liquid level sensor 22 is associated with the dosing valve of the dosing port. According to the sensing signal of the liquid level sensor, the opening and closing of the dosing valve is controlled to realize automatic dosing.

[0051] This embodiment is mainly used in an automated operation environment, especially in large-scale applications. The drug solution is lost quickly and manual dosing has its limitations. Automated dosing through a liquid level sensor can achieve a continuous supply of drugs and avoid drug shortages.

[0052] Or when the liquid medicine is too low, the liquid level sensor 22 is triggered to automatically cut off the heating device and power off the device to avoid burning the equipment.

[0053] Example 5

[0054] An auxiliary heating device is installed in the steam pressure balance tank. In case of urgent need or circulation failure, the steam is heated by the heating device in the steam pressure balance tank and then sent out for use. Compared with the circulation heating mode, this mode is more direct, but the parts close to the heating device may suffer destructive damage to the medicine, so it is used as an auxiliary.

[0055] 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, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A negative pressure steam fumigation device, characterized in that: It includes negative pressure cooker, heating unit and steam pressure balance tank; The negative pressure cooker is used to generate a negative pressure environment and inject liquid medicine. The interior of the negative pressure cooker is a closed cavity. The negative pressure cooker is respectively provided with a medicine adding port, a steam outlet, a first pressure sensor, a first temperature sensor and a drain valve. The steam outlet of the negative pressure cooker is connected to the steam pressure balance tank through a steam delivery pipeline. The steam delivery pipeline is equipped with a first negative pressure fan and a solenoid valve. The heating unit is used to heat the liquid medicine in the negative pressure cooker; The steam pressure balance tank is used to adjust the steam pressure. The steam pressure balance tank is provided with a second temperature sensor, a second pressure sensor, a steam inlet and at least one steam outlet. The steam pressure balance tank is self-adjusting and performs a pressure-increasing operation by replenishing air. During the pressure-increasing process, the temperature will drop and the steam volume will decrease. The steam inlet is connected to the outlet of the steam delivery pipeline, and the steam outlet is connected to the steam outlet pipe. The second negative pressure fan and the air outlet valve are installed on the steam outlet pipe. A bubble breaker is installed at the steam outlet of the negative pressure cooker. The negative pressure cooker and the steam pressure balance tank are connected. A steam circulation pipeline is connected between the bottom end of the steam pressure balance tank and the negative pressure cooker, and a circulation valve is installed on the steam circulation pipeline; a reflux pipe is connected between the bottom end of the steam pressure balance tank and the negative pressure cooker, and a reflux valve is installed on the reflux pipe. The bottom end of the steam pressure balance tank is inclined, and the inlet of the reflux pipe is arranged on the lower side of the bottom end of the steam pressure balance tank; the first pressure sensor in the negative pressure cooker is associated with the circulation valve and the first negative pressure fan, and the rotation speed of the first negative pressure fan and the opening and closing of the circulation valve are controlled according to the sensed pressure of the first pressure sensor, so as to realize pressurization and temperature increase or decompression and temperature reduction in the negative pressure cooker.

2. The negative pressure steam fumigation equipment according to claim 1, characterized in that: The pressure balance tank is also provided with a pressure relief valve.

3. The negative pressure steam fumigation equipment according to claim 2, characterized in that: The heating unit is an induction cooker or an electric heating wire which is externally arranged and close to the side wall and / or bottom surface of the negative pressure cooker. The side wall and bottom surface of the negative pressure cooker are made of heat-conducting material.

4. The negative pressure steam fumigation equipment according to claim 3, characterized in that: The heating unit is a heat pipe, an electric heating wire or an electromagnetic heating device built into the negative pressure cooker.

5. The negative pressure steam fumigation equipment according to claim 4, characterized in that: A liquid level sensor is installed in the negative pressure cooker, and the liquid level sensor is associated with the dosing valve of the dosing port. According to the sensing signal of the liquid level sensor, the opening and closing of the dosing valve is controlled to realize automatic dosing.

6. The negative pressure steam fumigation equipment according to claim 5, characterized in that: The pot body of the negative pressure cooker is a double-layer structure. A flushing port is installed at the bottom of the negative pressure cooker. The flushing port forms an acute angle with the inner wall of the negative pressure cooker so that the flushing water forms a vortex in the negative pressure cooker. The outer surface of the negative pressure cooker is provided with a heat-insulating material.

7. The negative pressure steam fumigation equipment according to claim 6, characterized in that: An auxiliary heating device is installed in the steam pressure balance tank.

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