CN118001431A

CN118001431A - Steam sterilizing device

Info

Publication number: CN118001431A
Application number: CN202311851453.0A
Authority: CN
Inventors: 庞邵中; 夏元通; 王毅; 葛玉鹏
Original assignee: Qingdao Haier Biomedical Co Ltd
Current assignee: Qingdao Haier Biomedical Co Ltd
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-05-10

Abstract

The application relates to the technical field of high-temperature sterilization, and discloses a steam sterilization device. The steam sterilization apparatus includes: the working system comprises a sterilizer and a steam generator, wherein the sterilizer defines a sterilization cavity and a sterilizer jacket, and the steam generator is used for providing high-temperature steam for the sterilization cavity; the cooling system comprises a refrigeration cycle system and a cold water tank, and water in the cold water tank is in heat exchange arrangement with the cold end of the refrigeration cycle system; the power system comprises a centrifugal water pump, wherein the centrifugal water pump is communicated with the cold water tank and the sterilizer jacket, and water in the cold water tank flows to the sterilizer jacket under the drive of the centrifugal water pump and is used for cooling the sterilization cavity. The steam sterilization device of the embodiment of the disclosure integrates sterilization and refrigeration, provides a cold source for cooling a sterilization cavity, improves the cooling speed of the sterilization cavity, and improves the sterilization efficiency of the steam sterilization device.

Description

Steam sterilizing device

Technical Field

The application relates to the technical field of high-temperature sterilization, for example to a steam sterilization device.

Background

At present, a steam sterilizer is a common sterilizer in the prior art, and the basic principle of the steam sterilizer is that high-temperature steam is formed in the sterilizer, and articles to be sterilized in a cavity of the sterilizer are sterilized at high temperature through the high-temperature steam.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

In the related art, there is a sterilizer for cooling a sterilization chamber, but the sterilizer uses normal temperature water for cooling, has large water consumption and low cooling efficiency, generally needs to provide circulating water from the outside, and has poor integration degree of the machine. When the steam sterilizer is used for sterilization, a large amount of high-temperature steam exists in the sterilization cavity, so that the whole cavity body temperature is very high, a long time is required for cooling to the temperature at which a door can be opened to take out sterilized articles, and the efficiency is low.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a steam sterilization device to realize the rapid cooling of a sterilization cavity and improve sterilization efficiency.

Embodiments of the present disclosure provide a steam sterilization apparatus, including: the working system comprises a sterilizer and a steam generator, wherein the sterilizer defines a sterilization cavity and a sterilizer jacket, and the steam generator is used for providing high-temperature steam for the sterilization cavity; the cooling system comprises a refrigeration cycle system and a cold water tank, and water in the cold water tank is in heat exchange arrangement with the cold end of the refrigeration cycle system; the power system comprises a centrifugal water pump, wherein the centrifugal water pump is communicated with the cold water tank and the sterilizer jacket, and water in the cold water tank flows to the sterilizer jacket under the drive of the centrifugal water pump and is used for cooling the sterilization cavity.

In some alternative embodiments, the centrifugal water pump is also in communication with the cold water tank and the steam generator to drive water within the cold water tank to flow into the steam generator to heat to form high temperature steam.

In some alternative embodiments, the power system further comprises: the first valve is arranged between the centrifugal water pump and the sterilizer jacket and is used for controlling the on-off between the centrifugal water pump and the sterilization cavity; and the second valve is arranged between the centrifugal water pump and the steam generator and used for controlling the on-off between the centrifugal water pump and the steam generator.

In some alternative embodiments, the steam sterilization apparatus further comprises: the controller is electrically connected with the working system, the cooling system and the power system, and is configured to control the first valve to be closed and the second valve to be opened and the steam generator to be started when the sterilizer is in a sterilization mode; when the sterilization mode is finished and the cooling mode is started, the controller controls the first valve to be opened and controls the second valve to be closed.

In some alternative embodiments, when the sterilizer is operated in a sterilization mode, the controller is configured to control the refrigeration cycle system to operate so that the temperature of the water in the cold water tank reaches a first preset temperature; when the sterilization mode is ended and the cooling mode is started, the controller is configured to control the refrigeration cycle system to work so that the temperature in the cold water tank reaches a second preset temperature; wherein the second preset temperature is less than the first preset temperature.

In some alternative embodiments, the power system further comprises: the vacuumizing pump is communicated with the sterilizing cavity and is used for pumping out the gas of the sterilizing cavity;

The sterilization mode of the sterilizer comprises a pulsation mode, and when the sterilizer operates in the pulsation mode, the controller is configured to control the steam generator, the centrifugal water pump and the vacuumizing pump to work so that the vacuumizing pump pumps gas in the sterilization cavity and the steam generator supplies steam to the sterilization cavity.

In some alternative embodiments, the steam sterilization apparatus further comprises: the detection device is arranged in the sterilization cavity and is used for detecting a plurality of parameters in the sterilization cavity and is electrically connected with the controller; wherein the controller is configured to control the evacuation pump and the steam generator to alternately operate in a cycle when any one of the plurality of parameters within the sterilization chamber is less than its corresponding preset value.

In some alternative embodiments, the vacuum pump comprises a water ring vacuum pump, the water path of the water ring vacuum pump is communicated with the cold water tank, and the air inlet of the water ring vacuum pump is communicated with the sterilization cavity, so that the water ring vacuum pump pumps out the gas in the sterilization cavity.

In some alternative embodiments, the cooling system further comprises: one end of the steam condensing pipe is communicated with the sterilizing cavity, and the other end of the steam condensing pipe is communicated with the cold water tank, so that steam in the sterilizing cavity is discharged into the cold water tank through the steam condensing pipe after sterilization is finished; and/or the hot water tank is arranged in heat exchange with the hot end of the refrigeration cycle system; wherein the hot water tank can be in communication with a cold water tank or a steam generator.

In some alternative embodiments, the refrigeration cycle includes a compressor, a condenser, a throttle, and an evaporator in sequential communication along a refrigerant flow direction, wherein a cold side of the refrigeration cycle includes the evaporator and a hot side of the refrigeration cycle includes the condenser.

The steam sterilization device provided by the embodiment of the disclosure can realize the following technical effects:

In the steam sterilization device, a steam generator of a working system is used for generating steam, a sterilization cavity and a sterilization cavity jacket are formed by the sterilizer, and the steam generated by the steam generator can flow into the sterilization cavity and is used for sterilizing articles to be sterilized in the sterilization cavity at high temperature. The cooling system comprises a refrigeration cycle system, and the cold end of the refrigeration cycle system exchanges heat with the water in the cold water tank, so that the temperature in the cold water tank can be reduced and regulated. The centrifugal water pump of the power system can drive the water in the cold water tank after heat exchange to flow into the jacket of the sterilizer, so that the cooling speed of the sterilization cavity is increased, the cooling effect is improved, and articles can be quickly opened and taken out. The steam sterilization device of the embodiment of the disclosure integrates sterilization and refrigeration, provides a cold source for cooling a sterilization cavity, improves the cooling speed of the sterilization cavity, and improves the sterilization efficiency of the steam sterilization device.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of a steam sterilization apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a working system provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a power system according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a cooling system provided by an embodiment of the present disclosure;

fig. 5 is a schematic view of a sterilizer provided in an embodiment of the present disclosure.

Reference numerals:

10. A working system; 101. a sterilizer; 1011. a sterilization chamber; 1012. a sterilizer jacket; 1013. a first pressure sensor; 1014. a second pressure sensor; 1015. a first pressure gauge; 1016. a second pressure gauge; 1017. a first safety valve; 1018. a second safety valve; 102. a steam generator; 1021. a steam inlet pipe; 1022. a water outlet pipe; 1023. a discharge pipe; 1024. a water level detecting device; 1025. a steam injection pipeline; 20. a cooling system; 201. an evaporator; 202. a compressor; 203. a condenser; 204. a throttle member; 205. drying the filter; 206. a cold water tank; 2061. a float valve; 2062. a first temperature sensor; 2063. a cold water tank drain pipe; 2064. a water supplementing pipe; 207. a steam condensing tube; 2071. a second temperature sensor; 208. a main drain pipe; 30. a power system; 301. a centrifugal water pump; 3011. a first pipeline; 3012. a second pipeline; 3013. a third pipeline; 3014. a water inlet pipeline; 302. a water ring vacuum pump; 3021. a vacuum pump inlet pipe; 3022. a vacuum pump drain pipe; 3023. and a fourth pipeline.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged where appropriate in order to describe the presently disclosed embodiments. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1 to 5, the embodiment of the present disclosure provides a steam sterilization apparatus including a working system 10, a cooling system 20, and a power system 30. The working system 10 includes a sterilizer 101 and a steam generator 102 in communication, the sterilizer 101 defining a sterilization chamber 1011 and a sterilizer jacket 1012, the sterilizer jacket 1012 being disposed outside the sterilization chamber 1011, the steam generator 102 being configured to provide steam to the sterilization chamber 1011.

In the embodiment of the disclosure, the sterilizer 101 defines a sterilization chamber 1011, an object to be sterilized is placed in the sterilization chamber 1011, and the steam generator 102 supplies high-temperature steam to the sterilization chamber 1011 to sterilize the object to be sterilized in the sterilization chamber 1011. As shown in fig. 1 and 2, steam generated by steam generator 102 flows into sterilization chamber 1011 through steam injection line 1025.

Optionally, the sterilizer is a horizontal sterilizer.

Optionally, the cooling system 20 includes a refrigeration cycle and a cold water tank 206, with water in the cold water tank 206 being placed in heat exchange relationship with the cold end of the refrigeration cycle. The power system 30 comprises a centrifugal water pump 301, the centrifugal water pump 301 is communicated with the cold water tank 206 and the sterilizer jacket 1012, and water in the cold water tank 206 flows to the sterilizer jacket 1012 under the drive of the centrifugal water pump 301 and is used for cooling the sterilization cavity 1011.

In the disclosed embodiment, the cooling system 20 includes a refrigeration cycle system and a cold water tank 206, wherein the cold end of the refrigeration cycle system is in communication with the cold water tank 206 and is capable of reducing and regulating the temperature of water within the cold water tank 206. The power system 30 includes a centrifugal water pump 301, the centrifugal water pump 301 communicating with the cold water tank 206 and the sterilizer jacket 1012 such that the centrifugal water pump 301 can drive water within the cold water tank 206 into the sterilizer jacket 1012 to cool the sterilization chamber 1011. Because the water in the cold water tank 206 and the cold end heat exchange of the refrigeration cycle system are arranged, the water temperature in the cold water tank 206 is lower, so that after the water in the cold water tank 206 flows to the sterilizer jacket 1012, the sterilization cavity 1011 can be rapidly cooled, articles can be rapidly opened and taken out, and the working efficiency of the steam sterilization device is further improved.

Optionally, the cold water tank 206 is further provided with a temperature compensation device, and the temperature compensation device can heat water in the cold water tank 206, so that water in the cold water tank 206 needs to flow into the steam generator 102, and the water temperature in the cold water tank 206 can be quickly increased.

Optionally, the steam sterilization apparatus further comprises a hot water tank capable of heat exchanging with the hot side of the refrigeration cycle, wherein the hot water tank is in communication with the cold water tank 206 or the steam generator 102.

In the disclosed embodiment, the water in the hot water tank is in communication with the cold water tank 206 such that the water in the hot water tank may flow into the cold water tank 206 to regulate the temperature of the water in the cold water tank 206 and thereby regulate the temperature of the water in the cold water tank 206 flowing to the steam generator 102 or other device. The water in the hot water tank may also be in communication with the steam generator 102 so that when the steam generator 102 needs to generate high temperature steam, the water in the hot water tank may flow into the steam generator 102 to reduce the energy consumption of the steam generator 102.

It can be understood that: the hot water tank and the cold water tank 206 may be connected in series or in parallel.

Alternatively, the hot water tank is in communication with a first drive device that is capable of driving the hot water tank on and off with the cold water tank 206 or the steam generator 102.

In some alternative embodiments, the cooling system 20 further includes a spraying device and a second driving device, the hot water tank is located below the condenser 203, the spraying device is located above the condenser 203, the second driving device is communicated with the spraying device and the hot water tank, and the second driving device can drive water in the hot water tank to spray on the condenser 203 through the spraying device, so that heat exchange between the condenser 203 and the spraying device can be achieved, cooling of the condenser 203 can be achieved, and heat exchange area and heat exchange effect of the condenser 203 and water in the hot water tank are also provided.

In other alternative embodiments, the condenser 203 is in the form of a coil, and the condenser 203 is immersed in a hot water tank.

Optionally, when the hot water tank is communicated with the cold water tank 206, water in the cold water tank 206 may also flow into the hot water tank, so as to reduce the temperature of the hot water tank, and improve the heat dissipation effect of the hot water tank on the condenser 203.

In some alternative embodiments, the refrigeration cycle includes a compressor 202, a condenser 203, a throttle 204, and an evaporator 201 in communication in the direction of refrigerant flow, wherein the cold end of the refrigeration cycle includes the evaporator 201 and the hot end of the refrigeration cycle includes the condenser.

In the embodiment of the present disclosure, a refrigerant flows in a refrigeration cycle system, and the refrigeration cycle system includes a compressor 202, a condenser 203, a throttling element 204, and an evaporator 201, which are sequentially disposed along a refrigerant flow direction. The high-temperature high-pressure gaseous refrigerant discharged by the compressor 202 flows into the condenser 203 to dissipate heat to form a high-temperature medium-pressure liquid refrigerant, the liquid refrigerant is throttled by the throttling element 204 to become a low-temperature low-pressure gas-liquid two-phase mixed refrigerant, the low-temperature low-pressure gas-liquid two-phase mixed refrigerant is changed into a low-temperature low-pressure gaseous refrigerant after the heat is absorbed by the evaporator 201 in the evaporator 201, and the gaseous refrigerant is sucked and compressed by the compressor 202 again to enter the next cycle. Here, the cold end of the refrigeration cycle is an evaporator 201, and the evaporator 201 can exchange heat with water in the cold water tank 206 to adjust the temperature in the cold water tank 206, so as to ensure that the temperature of the cold water tank 206 is in a proper range.

Optionally, the evaporator 201 is at least partially located within the cold water tank 206 and immersed in water.

Alternatively, the evaporator 201 is in a coil shape, and the evaporator 201 is located in the cold water tank 206, so that the contact area between the evaporator 201 and water in the cold water tank 206 can be increased, and the heat exchange effect can be improved.

In other alternative embodiments, the cold water tank is in communication with a water pipe, and the water in the cold water tank flows back into the cold water tank after the water in the cold water tank is in contact winding heat exchange with the pipeline of the evaporator 201 through the water pipe.

Optionally, the refrigeration cycle system further includes a dry filter 205, where the dry filter 205 is disposed between the throttling element 204 and the condenser 203, and the dry filter 205 is used to filter impurities in the refrigerant, so as to avoid the impurities from blocking the capillary tube, so as to ensure the normal operation of the refrigeration cycle system.

Optionally, the evaporator includes a plurality of evaporation portions that parallelly connected set up, and a plurality of evaporation portions include first evaporation portion and second evaporation portion, and first evaporation portion and the interior water heat transfer setting of cold water tank, second evaporation portion are located indoor for carry out temperature regulation to indoor air.

Thus, the refrigeration cycle system of the embodiment of the disclosure not only can provide a cold source and a heat source for the steam sterilization device, but also can adjust the indoor temperature without additionally arranging the refrigeration cycle system, thereby reducing occupied space.

Optionally, when the quantity of steam sterilization device is a plurality of, each steam sterilization device all corresponds and is equipped with an evaporation portion, and every evaporation portion can independent control like this, can adjust the temperature of each steam sterilization device's cold water tank, guarantees the normal work of each steam sterilization device.

In other alternative embodiments, the refrigeration cycle includes a semiconductor refrigeration device with a cold end attached to the outside of the cold water tank to cool water in the cold water tank and a hot end attached to the outside of the hot water tank to heat the hot water tank.

Optionally, as shown in fig. 1,2 and 3, the centrifugal water pump 301 is further connected to the cold water tank 206 and the steam generator 102, so as to drive the water in the cold water tank 206 to flow into the steam generator 102 to heat to form high-temperature steam.

In the embodiment of the disclosure, the steam generator 102 is communicated with the cold water tank 206, the cold water tank 206 can provide a water source for the steam generator 102, and after the water in the cold water tank 206 enters the steam generator 102, the water is heated to form high-temperature steam under the action of a heating pipe of the steam generator 102.

Optionally, the power system 30 further comprises a first valve and a second valve, wherein the first valve is arranged between the centrifugal water pump 301 and the sterilizer jacket 1012 and is used for controlling the on-off between the centrifugal water pump 301 and the sterilization cavity 1011; the second valve is arranged between the centrifugal water pump 301 and the steam generator 102, and is used for controlling the on-off between the centrifugal water pump 301 and the steam generator 102.

In the disclosed embodiment, the centrifugal water pump 301 is in communication with the cold water tank 206, and the centrifugal water pump 301 is capable of driving water in the cold water tank 206 into the steam generator 102 to heat to form high temperature steam within the steam generator 102. The centrifugal water pump 301 may also drive water from the cold water tank 206 into the sterilizer jacket 1012 for cooling the sterilization chamber 1011. The first valve and the second valve can control the flow direction of water driven by the centrifugal water pump 301 to the cold water tank 206 to realize different operation modes of the operation system 10.

As shown in fig. 2 and 3, the outlet of the centrifugal water pump 301 is in communication with the inlet of the first pipe 3011, the outlet of the first pipe 3011 is in communication with the steam generator 102 via the second pipe 3012, the outlet of the first pipe 3011 is in communication with the sterilizer jacket 1012 via the third pipe 3013, and the inlet of the centrifugal water pump 301 is in communication with the cold water tank 206 via the water inlet pipe 3014.

In some alternative embodiments, a first valve is provided in the second conduit 3012 and a second valve is provided in the first conduit 3011.

In other alternative embodiments, the steam sterilization apparatus includes a first three-way valve that communicates between the first conduit 3011, the second conduit 3012, and the third conduit 3013, the first three-way valve integrating the first valve with the second valve, the first valve opening, i.e., the first three-way valve communicates between the first conduit 3011 and the third conduit 3013. When the second valve is open, i.e., the first three-way valve communicates with the first and second lines 3011 and 3012.

Optionally, the steam sterilization apparatus further includes a controller electrically connected to the working system 10, the cooling system 20, and the power system 30, the controller being configured to control the first valve to be closed and the second valve to be opened when the sterilizer 101 is operated in the sterilization mode; after sterilization of the sterilization chamber 1011 is completed, the controller controls the first valve to open and controls the second valve to close.

In the embodiment of the disclosure, when the sterilizer 101 is in a sterilization mode, the controller controls the first valve to be closed and controls the second valve to be opened, so that water in the cold water tank 206 flows into the steam generator 102 through the centrifugal water pump 301, and high-temperature steam is formed under the heating action of the heating pipe of the steam generator 102 and flows into the sterilization cavity 1011 to sterilize objects to be sterilized in the sterilization cavity 1011. When the sterilization mode is finished and the cooling mode is started, the controller controls the first valve to be opened and controls the second valve to be closed, so that the centrifugal water pump 301 drives water in the cold water tank 206 to flow into the sterilizer jacket 1012, and the sterilization cavity 1011 is cooled by low-temperature water in the cold water tank 206, which exchanges heat with the cold end of the refrigeration cycle system. Thus, the cold end of the refrigeration cycle system can provide a cold source to maintain the water in the cold water tank 206 at a proper temperature, provide a water source for the steam generator 102, and also provide a cooling medium for the sterilizer jacket 1012, thereby improving the working efficiency of steam sterilization and providing the best experience for users.

Optionally, when the sterilizer 101 is operating in a sterilization mode, the controller is configured to control the refrigeration cycle to operate to bring the temperature of the water within the cold water tank 206 to a first preset temperature; after sterilization of the sterilization chamber 1011 is completed, the controller is configured to control the refrigeration cycle to operate such that the temperature within the cold water tank 206 reaches a second preset temperature, which is less than the first preset temperature.

In the embodiment of the disclosure, when the sterilizer 101 is in a sterilization mode, the steam generator 102 is communicated with the centrifugal water pump 301, the centrifugal water pump 301 drives water in the cold water tank 206 to flow into the steam generator 102 to form high-temperature steam, the high-temperature steam enters the sterilization cavity 1011, and the controller controls the refrigeration cycle system to work and adjusts the temperature in the cold water tank 206 to reach a first preset temperature. When the sterilizer 101 is sterilized, the sterilizer 101 needs to be cooled, the controller controls the refrigeration cycle system to work, and adjusts the temperature of the cold water tank 206 to be reduced to a second preset temperature, wherein the second preset temperature is lower than the first preset temperature, so that the energy consumption for heating the water flowing into the cold water tank 206 and then flowing into the steam generator 102 can be reduced, and the high-temperature steam generation speed can be increased. Meanwhile, the second preset temperature is lower, so that the cooling speed of the low-temperature water in the cold water tank 206 to the sterilization cavity 1011 can be improved, and the cooling efficiency is improved.

The first preset temperature is, for example, 20 ℃ and the second preset temperature is 10 ℃. Or the first preset temperature is 18 ℃ and the second preset temperature is 11 ℃. Or the first preset temperature is 22 ℃ and the second preset temperature is 8 ℃.

It should be noted that: in practical application, the first preset temperature and the second preset temperature can be set according to requirements, so that the water temperature in the cold water tank 206 is suitable, and the use requirements of different situations can be met.

Optionally, the power system 30 further comprises a vacuum pump in communication with the sterilization chamber for evacuating the sterilization chamber of gas.

Optionally, the evacuation pump is electrically connected to a controller, the sterilization mode of the sterilizer 101 including a pulsation mode, and the controller is configured to control the operation of the steam generator 102, the centrifugal water pump 301, and the evacuation pump to cause the gas within the sterilization chamber 1011 to exit the sterilization chamber 1011 via the evacuation pump and to cause the steam generator 102 to provide steam to the sterilization chamber 1011 when the sterilizer 101 is operated in the pulsation mode.

In the embodiment of the disclosure, when the steam generator 102 provides high-temperature steam to the sterilization chamber 1011, the water-ring vacuum pump 302 can pump the gas of the sterilization chamber 1011, so that the sterilization chamber 1011 can be filled with the high-temperature steam rapidly.

In the embodiment of the disclosure, by using the water in the cold water tank, it is possible to realize that the water ring type vacuum pump 302 pumps the gas of the sterilization cavity 1011 away when the steam generator 102 provides the high temperature steam to the sterilization cavity 1011, so that the sterilization cavity 1011 can be filled with the high temperature steam rapidly. The energy consumption is saved, the working efficiency of the steam sterilization device is improved, and the steam sterilization device has the advantages of being green, environment-friendly and sustainable.

Optionally, the steam sterilization device further comprises a detection device, wherein the detection device is arranged in the sterilization cavity and is used for detecting a plurality of parameters in the sterilization cavity, and the detection device is electrically connected with the controller; wherein the controller is configured to control the evacuation pump and the steam generator to alternately operate in a cycle when any one of the plurality of parameters within the sterilization chamber is less than its corresponding preset value.

In the embodiment of the disclosure, after the sterilizer 101 starts the sterilization mode, the vacuumizing pump pumps the gas in the sterilization cavity 1011 under the flowing action of the circulating water provided by the cold water tank 206, so as to realize vacuumizing of the sterilization cavity 1011. Then, the controller controls the second valve to be opened and controls the steam generator 102 and the centrifugal water pump 301 to operate to supply high temperature steam to the sterilization chamber 1011. When the high-temperature steam and the pressure in the sterilization cavity 1011 do not reach the preset values, vacuumizing and injecting the steam again, and vacuumizing and injecting the high-temperature steam for a plurality of times, so that the cold air in the sterilization cavity 1011 is effectively replaced, a plurality of parameters in the sterilization cavity reach the set values, after the pulsation is completed, the sterilization cavity 1011 is filled with the high-temperature steam, and the objects to be sterilized in the sterilization cavity 1011 are sterilized by the high-temperature steam. Simultaneously, under the effect of vacuumizing pump evacuation, steam can diffuse to the outside and the inside of waiting to sterilize the object more fast, and the sterilization is more thorough, and is less to waiting to sterilize the damage degree of article.

Optionally, the plurality of parameters within the sterilization chamber 1011 include pressure, temperature, humidity, etc. within the sterilization chamber.

Optionally, the vacuum pump comprises a water ring vacuum pump 302, a water path of the water ring vacuum pump 302 is communicated with the cold water tank 206, a gas path of the water ring vacuum pump 302 is communicated with the sterilization chamber 1011, and the water ring vacuum pump 302 is used for pumping gas in the sterilization chamber 1011. Here, the water path of the water ring vacuum pump 302 refers to the water inlet and outlet of the water ring vacuum pump, and the air path of the water ring vacuum pump 302 refers to the air inlet and outlet of the water ring vacuum pump 302. Specifically, an air inlet of the water ring vacuum pump 302 is communicated with the sterilization chamber 1011, and the water ring vacuum pump 302 is used for pumping out the gas in the sterilization chamber 1011.

After the water ring vacuum pump is started, the water path of the water ring vacuum pump 302 absorbs the water in the cold water tank, and the water in the pump begins to rotate to form a water ring. The water ring is formed by centrifugal force pushing water outwards from the bottom of the pump body, while a vacuum area is formed at the upper end of the water ring. When the vacuum area in the pump body is formed, the air inlet is opened, and the water ring type vacuum pump 302 can draw the air in the sterilization cavity 1011 through the air inlet to enter the air in the pump body to contact with the water ring, so that the air is forced to move outwards and is compressed due to the rotation of the water ring. The compressed gas enters the water ring, mixes with the water and is cooled, reducing the gas temperature and increasing the efficiency of the water ring vacuum pump 302. The cooled gas continues to move outwardly and exits the water ring vacuum pump through the air outlet. This achieves the pumping of the sterilization chamber by the water ring vacuum pump 302.

When the vacuumizing pump is the water ring type vacuum pump 302, the sterilization cavity 1011 is vacuumized by the water ring type vacuum pump 302, the water ring type vacuum pump 302 can form a water ring by using water in the cold water tank 206, and the vacuumizing function is realized, so that the vacuumizing equipment is not required to be additionally arranged, the energy consumption is reduced, and the working efficiency of the steam sterilizer 101 is improved. Thus, the cold water tank integrates multiple functions, reduces the arrangement of components, reduces the occupied area and improves the working efficiency of the steam sterilization device.

The power system 30 includes a vacuum pump inlet pipe 3021 and a vacuum pump outlet pipe 3022, the vacuum pump inlet pipe 3021 being communicated between the water inlet of the water ring vacuum pump 302 and the cold water tank 206 for guiding water in the cold water tank 206 into the water ring vacuum pump 302. A vacuum pump drain 3022 is in communication between the water outlet of the water ring vacuum pump 302 and the cold water tank 206, the vacuum pump drain 3022 being used to direct water from the water ring vacuum pump 302 back into the cold water tank 206. The vacuum pump water inlet pipe 3021 and the vacuum pump water outlet pipe 3022 form a circulation water path to form a water ring so as to ensure the vacuumizing effect of the water ring type vacuum pump 302.

As shown in fig. 1 and 3, the air inlet of the water ring vacuum pump 302 communicates with the sterilization chamber 1011 through a fourth pipe 3023, so that the steam sterilized in the sterilization chamber 1011 can be discharged through the fourth pipe 3023.

Optionally, cooling system 20 further includes a steam condensing tube 207 having one end in communication with sterilization chamber 1011 and the other end in communication with cold water tank 206 such that steam within sterilization chamber 1011 is vented into cold water tank 206 after sterilization is completed.

In the embodiment of the disclosure, after the sterilizer 101 completes sterilization, the steam in the sterilization cavity 1011 can be discharged into the water of the cold water tank 206 by utilizing the steam condensation pipe, so that the water in the cold water tank 206 can be supplemented, and meanwhile, the high-temperature steam discharged by the sterilization cavity 1011 can be rapidly cooled, so that the high-temperature steam is properly processed, and the safety of operators is prevented from being endangered or the danger is avoided from being caused to the outside due to the direct discharge of the high-temperature steam. When the cooling is performed after the sterilization is completed, the water temperature in the cold water tank is low, and the discharged steam can be rapidly cooled.

After sterilization is completed, the injected cooling water of the sterilization cavity 1011 can be rapidly cooled through the sterilizer jacket 1012 on the one hand, and on the other hand, high-temperature steam in the sterilization cavity 1011 can be discharged into the cold water tank 206 through the steam condensation pipe 207, and the rapid cooling of the cold end of the refrigeration cycle system and the water in the cold water tank 206 is utilized, so that the rapid cooling of the sterilization cavity 1011 is realized.

Optionally, the steam condensing pipe 207 is communicated with the middle part of the fourth pipeline 3023, and the steam sterilization device further comprises a second three-way valve, and the second three-way valve is arranged at the joint of the fourth pipeline 3023 and the steam condensing pipe 207. When sterilizer 101 is in the pulse mode, the second three-way valve communicates sterilization chamber 1011 with water-ring vacuum pump 302, such that water-ring vacuum pump 302 pumps gas from sterilizer 101. When the sterilizer 101 is operated in the cooling mode, the second three-way valve communicates the sterilization chamber 1011 with the steam condensing duct 207 so that high temperature steam in the sterilization chamber 1011 is discharged into the cold water tank 206.

Optionally, the steam condensing tube 207 is in a coil structure, and the steam condensing tube 207 is at least partially located in the cold water tank 206 and immersed in water, so as to increase the contact area between the steam condensing tube 207 and water and increase the cooling speed of the discharged high-temperature steam.

In some alternative embodiments, the outlet of the steam condensing tube 207 is communicated with the hot water tank, so that the steam sterilized by the sterilizing chamber 1011 can be discharged into the hot water tank and then mixed with the water of the hot water tank, and then flows to other components requiring a higher water temperature for use.

Alternatively, when the steam condensing tube 207 and the evaporator 201 are both located in the cold water tank 206, the steam condensing tube 207 and the evaporating tube of the evaporator 201 are sequentially staggered, so that when the steam condensing tube 207 discharges the steam in the sterilization cavity 1011, the heat dissipation effect of the steam can be accelerated by the evaporator 201 and the steam condensing tube 207.

Optionally, the working system 10 further comprises a steam inlet tube 1021, a water outlet tube 1022 and a discharge tube 1023, the steam inlet tube 1021 being in communication between the steam generator 102 and the sterilizer jacket 1012 for feeding steam to the sterilizer jacket 1012; a water outlet pipe 1022 is communicated between the steam generator 102 and the sterilizer jacket 1012, for discharging water of the sterilizer jacket 1012; the drain 1023 communicates the steam generator 102 with the outside to drain the water of the sterilizer jacket 1012 to the outside through the steam generator 102.

In the embodiment of the disclosure, the high-temperature steam generated by the steam generator 102 can also flow into the sterilizer jacket 1012 through the steam inlet pipe 1021, so that the temperature in the sterilizer jacket 1012 can be increased, meanwhile, after sterilization is completed, the centrifugal water pump 301 conveys cooling water to the sterilizer jacket 1012, the cooling water in the sterilizer jacket 1012 flows back into the steam generator 102 through the water outlet pipe 1022, and then is discharged out through the steam generator 102 and the discharge pipe 1023, so that the water recovered in the sterilizer jacket 1012 and the water which is not evaporated can also be discharged out, and the circulation flow of the cooling water is realized.

Optionally, the sterilizer jacket 1012 can be in communication with the sterilization chamber 1011 such that steam entering the sterilizer jacket 1012 can also flow into the sterilization chamber 1011.

Optionally, the cold water tank 206 is connected with a water replenishing pipe 2064, and the water replenishing pipe 2064 is used for replenishing water in the cold water tank 206.

Optionally, the water in the cold water tank 206 is softened water, the water inlet pressure of the softened water ranges from 0.15Mpa to 0.3Mpa, and the initial temperature of the softened water is less than or equal to 25 ℃, so that high-temperature steam formed by the water in the cold water tank 206 can be ensured not to corrode the sterilization chamber 1011, and too large difference of water temperature can be avoided, and the working efficiency of the steam sterilization device is prevented from being influenced. When the water inlet pressure of the softened water is less than 0.15Mpa,

The inflow water pressure is too small to affect the inflow and inflow speed of the cold water tank 206. When the water inflow pressure of the softened water is more than 0.3Mpa, the water inflow pressure is too high, the flow speed is too fast, and the control of the water inflow is inconvenient.

The pressure of the softened water is exemplified by 0.15Mpa, 0.18Mpa, 0.2Mpa, 0.25Mpa, 0.28Mpa, 0.3Mpa, etc.

Optionally, the water refill tube 2064 is sized as DN20 to ensure the amount of water in the cold water tank 206.

Optionally, one end of the water replenishment pipe 2064 is connected to the cold water tank 206, and the other end of the water replenishment pipe 2064 is provided with an internal thread structure so as to communicate with the water intake pipe 3014.

Optionally, a float valve 2061 is provided in the cold water tank 206, and the float valve 2061 is used for detecting the water level in the cold water tank 206. The cooling system 20 further includes a driving device in communication with the cold water tank 206 and the water replenishment pipe 2064 for driving the flow of ambient water into the cold water tank 206 via the water replenishment pipe 2064. Both the float valve 2061 and the drive device are electrically connected to a controller configured to control operation of the drive device based on the water level within the cold water tank 206.

In the embodiment of the disclosure, when the water level in the cold water tank 206 is greater than or equal to the preset liquid level, the controller controls the driving device to stop working, and when the water level in the cold water tank 206 is less than the preset liquid level, the controller controls the driving device to work so as to supplement the water in the cold water tank 206.

Optionally, a first temperature sensor 2062 is disposed in the cold water tank 206, the first temperature sensor 2062 is used for detecting the temperature of water in the cold water tank 206, and a controller is electrically connected with the first temperature sensor 2062 and controls the operation of the centrifugal water pump 301 according to the temperature of the cold water tank 206 detected by the first sensor.

Optionally, cooling system 20 further comprises a second temperature sensor 2071, second temperature sensor 2071 being provided upstream of steam condenser tube 207 for detecting the temperature of the steam flowing from sterilization chamber 1011 to steam condenser tube 207. Thus, the cooling degree of the sterilization chamber 1011 can be timely detected to control the operation of the centrifugal water pump 301.

Optionally, when the temperature of the steam flowing to the steam condensing pipe 207 from the sterilization chamber 1011 is less than or equal to the preset temperature, the controller controls the centrifugal water pump 301 to stop working, and controls the first valve to be closed, stopping the supply of cooling water to the sterilizer jacket 1012.

Optionally, a water level detecting device 1024 is disposed in the steam generator 102, where the water level detecting device 1024 is used to detect the water level in the steam generator 102, so as to ensure that the water level in the steam generator 102 is within a preset water level range. When the water level of the steam generator 102 is lower than the preset water level, the controller controls the second valve and the centrifugal water pump 301 to be opened, controls the first valve to be closed, and controls the refrigeration cycle system to operate so that the water temperature in the cold water tank 206 is at the first preset temperature to supply water to the steam generator 102. When the water level of the evaporation condenser 203 is higher than a preset water level, the controller is configured to control the second valve to be closed and control the centrifugal water pump 301 to stop working.

Optionally, the sterilizer 101 further comprises a first relief valve 1017, a first pressure sensor 1013, and a first pressure gauge 1015, the first pressure sensor 1013 is configured to detect a pressure in the sterilizer jacket 1012, the first pressure gauge 1015 is electrically connected to the first pressure sensor 1013, and the first pressure gauge 1015 is configured to display the pressure of the sterilizer jacket 1012.

In the embodiment of the disclosure, the first pressure sensor 1013 and the first pressure gauge 1015 are disposed in the sterilizer jacket 1012, so that a user can pay attention to the pressure of the sterilizer jacket 1012 in time, and when the pressure of the sterilizer jacket 1012 is too high, the first safety valve 1017 is opened in time to discharge the gas in the sterilizer jacket 1012, so that the pressure of the sterilizer jacket 1012 is ensured to be within a preset range.

Alternatively, the first relief valve 1017 and the first pressure sensor 1013 are both electrically connected to a controller configured to control opening and closing of the first relief valve 1017 according to the pressure of the sterilizer jacket 1012.

In the embodiment of the disclosure, the steam sterilization device can receive the pressure of the first pressure sensor 1013 through the controller, and control the opening of the first safety valve 1017 in real time, so as to avoid the problems of negligence, forgetfulness and the like caused by manual valve opening.

Optionally, sterilizer 101 further comprises a second safety valve 1018, a second pressure sensor 1014, and a second pressure gauge 1016, second pressure sensor 1014 being configured to detect pressure within sterilization chamber 1011, second pressure gauge 1016 being electrically connected to second pressure sensor 1014, second pressure gauge 1016 being configured to display pressure within sterilization chamber 1011, the detection means comprising second pressure sensor 1014.

In the embodiment of the disclosure, the second pressure sensor 1014 and the second pressure gauge 1016 are disposed in the sterilization chamber 1011, so that a user can pay attention to the pressure of the sterilization chamber 1011 in time, and when the pressure of the sterilizer jacket 1012 is too high, the second safety valve 1018 is opened in time to discharge the gas in the sterilization chamber 1011, so as to ensure that the pressure of the sterilizer jacket 1012 is within a preset range. In addition, when the pressure in the sterilization chamber 1011 does not reach the preset pressure range, the controller is configured to control the steam generator 102 to enter steam and the water ring vacuum pump 302 to discharge steam so that the high temperature steam pressure in the sterilization chamber 1011 is within the preset pressure range.

Optionally, second safety valve 1018 and second pressure sensor 1014 are each electrically connected to a controller configured to control the opening and closing of second safety valve 1018 in accordance with the pressure of sterilization chamber 1011.

In the embodiment of the disclosure, the steam sterilization device can receive the pressure of the second pressure sensor 1014 through the controller, and control the opening of the second safety valve 1018 in real time, so as to avoid the problems of negligence, forgetfulness and the like caused by manual valve opening.

Optionally, the cold water tank 206 is further provided with a cold water tank drain 2063, the cold water tank drain 2063 being used for draining water in the cold water tank 206. The steam sterilization apparatus further includes a main drain pipe 208, and the main drain pipe 208 communicates with both the outlet of the cold water tank drain pipe 2063 and the outlet of the drain pipe 1023 to drain the surplus water of the steam sterilization apparatus.

Optionally, the outlet water temperature of the main drain pipe 208 is less than or equal to 60 ℃ to avoid too high a water temperature, endangering the user.

Optionally, the total header has a nipple size DN25.

Optionally, the main drain 208 is externally threaded to facilitate communication of the main drain 208 with other plumbing.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A steam sterilization apparatus, comprising:

the working system comprises a sterilizer and a steam generator, wherein the sterilizer defines a sterilization cavity and a sterilizer jacket, and the steam generator is used for providing high-temperature steam for the sterilization cavity;

the cooling system comprises a refrigeration cycle system and a cold water tank, and water in the cold water tank is in heat exchange arrangement with the cold end of the refrigeration cycle system;

The power system comprises a centrifugal water pump, wherein the centrifugal water pump is communicated with the cold water tank and the sterilizer jacket, and water in the cold water tank flows to the sterilizer jacket under the drive of the centrifugal water pump and is used for cooling the sterilization cavity.

2. A steam sterilization apparatus as defined in claim 1, wherein,

The centrifugal water pump is also communicated with the cold water tank and the steam generator to drive water in the cold water tank to flow into the steam generator for heating to form high-temperature steam.

3. The steam sterilization device of claim 2, wherein the power system further comprises:

the first valve is arranged between the centrifugal water pump and the sterilizer jacket and is used for controlling the on-off between the centrifugal water pump and the sterilization cavity;

And the second valve is arranged between the centrifugal water pump and the steam generator and used for controlling the on-off between the centrifugal water pump and the steam generator.

4. A steam sterilization apparatus as defined in claim 3, further comprising:

the controller is electrically connected with the working system, the cooling system and the power system, and is configured to control the first valve to be closed and the second valve to be opened and the steam generator to be started when the sterilizer is in a sterilization mode; when the sterilization mode is finished and the cooling mode is started, the controller controls the first valve to be opened and controls the second valve to be closed.

5. A steam sterilization apparatus as defined in claim 4, wherein,

When the sterilizer is in a sterilization mode, the controller is configured to control the refrigeration cycle system to work so as to enable the temperature of water in the cold water tank to reach a first preset temperature; when the sterilization mode is ended and the cooling mode is started, the controller is configured to control the refrigeration cycle system to work so that the temperature in the cold water tank reaches a second preset temperature; wherein the second preset temperature is less than the first preset temperature.

6. The steam sterilization device of claim 5, wherein the power system further comprises:

The vacuumizing pump is communicated with the sterilizing cavity and is used for pumping out the gas of the sterilizing cavity;

7. The steam sterilization apparatus of claim 6, further comprising:

The detection device is arranged in the sterilization cavity and is used for detecting a plurality of parameters in the sterilization cavity and is electrically connected with the controller;

Wherein the controller is configured to control the evacuation pump and the steam generator to alternately operate in a cycle when any one of the plurality of parameters within the sterilization chamber is less than its corresponding preset value.

8. A steam sterilization apparatus as defined in claim 6, wherein,

The vacuumizing pump comprises a water ring type vacuum pump, a waterway of the water ring type vacuum pump is communicated with the cold water tank, and an air inlet of the water ring type vacuum pump is communicated with the sterilizing cavity, so that the water ring type vacuum pump pumps air in the sterilizing cavity.

9. The steam sterilization device of any one of claims 1 to 8, wherein the cooling system further comprises:

one end of the steam condensing pipe is communicated with the sterilizing cavity, and the other end of the steam condensing pipe is communicated with the cold water tank, so that steam in the sterilizing cavity is discharged into the cold water tank through the steam condensing pipe after sterilization is finished; and/or the number of the groups of groups,

The hot water tank is arranged in a heat exchange manner with the hot end of the refrigeration cycle system;

wherein the hot water tank can be in communication with a cold water tank or a steam generator.

10. A steam sterilization apparatus as defined in claim 9, wherein,

The refrigerating circulation system comprises a compressor, a condenser, a throttling piece and an evaporator which are sequentially communicated along the flowing direction of the refrigerant, wherein the cold end of the refrigerating circulation system comprises the evaporator, and the hot end of the refrigerating circulation system comprises the condenser.