CN216384592U - High-temperature oil type mold temperature controller - Google Patents

High-temperature oil type mold temperature controller Download PDF

Info

Publication number
CN216384592U
CN216384592U CN202122766368.7U CN202122766368U CN216384592U CN 216384592 U CN216384592 U CN 216384592U CN 202122766368 U CN202122766368 U CN 202122766368U CN 216384592 U CN216384592 U CN 216384592U
Authority
CN
China
Prior art keywords
oil
pipeline
temperature
casing
output end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202122766368.7U
Other languages
Chinese (zh)
Inventor
欧阳军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Kaifeng Intelligent Equipment Co ltd
Original Assignee
Anhui Kaifeng Intelligent Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Kaifeng Intelligent Equipment Co ltd filed Critical Anhui Kaifeng Intelligent Equipment Co ltd
Priority to CN202122766368.7U priority Critical patent/CN216384592U/en
Application granted granted Critical
Publication of CN216384592U publication Critical patent/CN216384592U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

本实用新型涉及模具温度控制机技术领域,尤其为一种高温油式模具温度控制机,包括壳体,所述壳体的侧壁均安装有侧护板,所述壳体的正面设置有控制面板,所述壳体的内部设置有控制机主体,所述控制机主体的一侧设置有油箱,所述油箱远离控制机主体的一侧设置有冷却器,本实用新型通过设置蒸发冷却式的冷却器,并且通过导线连接控制面板,控制面板来检测油箱的温度情况,达到高温预警时,启动冷却器,冷却器的生成的冷却液进入蒸发器,蒸发器设置在油箱内,蒸发器和热油直接进行热交换,能够快速且持续的冷却热油,替换了传统的冷却水冷却,冷却效率明显提高。

Figure 202122766368

The utility model relates to the technical field of mold temperature control machines, in particular to a high-temperature oil-type mold temperature control machine. Panel, the inside of the casing is provided with the main body of the control machine, the side of the main body of the control machine is provided with an oil tank, and the side of the oil tank away from the main body of the control machine is provided with a cooler. The cooler is connected to the control panel by wires. The control panel detects the temperature of the fuel tank. When the high temperature warning is reached, the cooler is activated, and the coolant generated by the cooler enters the evaporator. The evaporator is set in the fuel tank. The oil directly exchanges heat, which can quickly and continuously cool the hot oil, replacing the traditional cooling water cooling, and the cooling efficiency is significantly improved.

Figure 202122766368

Description

High-temperature oil type mold temperature controller
Technical Field
The utility model relates to the technical field of die temperature controllers, in particular to a high-temperature oil type die temperature controller.
Background
The oil type mould temperature controller in the market at present mainly comprises an oil tank, an expansion oil tank, an oil pump, a heating pipe, a cooling coil pipe, an oil outlet pipeline, an oil return pipeline, a cooling water inlet pipeline, a cooling water outlet pipeline and the like, when the oil tank works, heat conduction oil in the oil tank is conveyed to a mould by the oil pump through the oil outlet pipeline, the heat conduction oil after heat exchange with the mould returns to the oil tank through the oil return pipeline to form a circulating working loop, a temperature sensing element detects the temperature of the heat conduction oil and feeds back the temperature to a temperature controller, when the temperature of the heat conduction oil is lower than the set value of the temperature controller, the temperature controller outputs a signal to close the power supply of the heating pipe to start heating, when the temperature of the heat conduction oil is higher than the set value of the temperature controller, the temperature controller outputs a signal to disconnect the power supply of the heating pipe to stop heating, and simultaneously to open a cooling electromagnetic valve, external cooling water enters the cooling coil pipe to cool the heat conduction oil, and the process is repeated in such a way that the temperature of the heat conduction oil is maintained at the set value of the temperature controller, however, in the actual production process, the cooling water cooling efficiency is low, the temperature of the cooling oil can not be ensured within a controllable range for a long time, the cooling water cooling effect is not good, the production process is easy to stop, and the production efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a high temperature oil type mold temperature controller, which solves the above problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a high temperature oil formula mould temperature controller, includes the casing, the side guard plate is all installed to the lateral wall of casing, the front of casing is provided with control panel, the inside of casing is provided with the controller main part, one side of controller main part is provided with the oil tank, one side that the controller main part was kept away from to the oil tank is provided with the cooler, the cooler includes compressor, heat exchanger, liquid storage pot, economic ware, filter, expansion valve, evaporimeter, vapour and liquid separator, water pump and outside water tank, the top of controller main part is and the inside that is located the casing is provided with heating element, the terminal surface of casing is provided with radiator fan, the back top-down of casing has set gradually oil pipe way and cooling water pipeline.
As a preferable scheme of the utility model, the end face of the shell is uniformly provided with heat dissipation holes, and the side wall of the side guard plate is uniformly provided with ventilation holes.
As a preferable scheme of the present invention, an output end of the compressor is connected to an input port of a heat exchanger through a pipeline, an output end of the heat exchanger is connected to a liquid storage tank through a pipeline, an output end of the liquid storage tank is connected to an economizer through a pipeline, a gas end of the economizer is connected to the compressor through a pipeline, a liquid end of the economizer is connected to a filter through a pipeline, an output end of the filter is connected to an expansion valve through a pipeline, the other end of the expansion valve is connected to an input end of an evaporator through a pipeline, an output end of the evaporator is connected to a gas-liquid separator through a pipeline, the evaporator is disposed inside the oil tank, an output end of the gas-liquid separator is connected to an input end of the compressor through a pipeline, a cooling chamber is disposed inside the heat exchanger, an input end of the water pump is connected to an external water tank through a pipeline, and an output end of the water pump is connected to the cooling chamber, the output end of the cooling chamber is connected with an external water tank.
In a preferred embodiment of the present invention, the heat exchanger and the evaporator are both copper bent tubes.
As a preferable scheme of the present invention, the oil line is connected to the controller main body and the oil tank through a pipe, and the cooling water line is connected to the cooler and the external water tank through a pipe.
As a preferable scheme of the present invention, the control panel is respectively connected to the controller main body, the cooler, the cooling fan and the heating assembly through wires, and the connection modes are all electrically connected.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the evaporative cooling type cooler is arranged, the control panel is connected with the control panel through the lead, the control panel is used for detecting the temperature condition of the oil tank, when the high-temperature early warning is achieved, the cooler is started, the cooling liquid generated by the cooler enters the evaporator, the evaporator is arranged in the oil tank, the evaporator and the hot oil are directly subjected to heat exchange, the hot oil can be rapidly and continuously cooled, the traditional cooling water cooling is replaced, and the cooling efficiency is obviously improved.
2. According to the utility model, by arranging the cooling chamber, the external water tank continuously enters the cooling chamber to exchange heat with the heat exchanger, the design of the external water tank can be adjusted according to actual production requirements, and most production condition requirements can be met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a schematic view of the structure of the cooler of the present invention.
In the figure: 1. a housing; 2. a side guard plate; 3. a control panel; 4. a controller main body; 5. an oil tank; 6. a cooler; 7. a heating assembly; 8. a heat radiation fan; 9. an oil pipeline; 10. a cooling water line; 101. heat dissipation holes; 201. a vent hole; 601. a compressor; 602. a heat exchanger; 603. a liquid storage tank; 604. an economizer; 605. a filter; 606. an expansion valve; 607. an evaporator; 608. a gas-liquid separator; 609. a water pump; 610. an external water tank; 6021. and a cooling chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
While several embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in order to facilitate an understanding of the utility model, the utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed to provide a more complete disclosure of the utility model.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, the present invention provides a technical solution:
a high-temperature oil type mold temperature controller comprises a shell 1, side protection plates 2 are mounted on the side walls of the shell 1, a control panel 3 is arranged on the front face of the shell 1, a controller main body 4 is arranged inside the shell 1, an oil tank 5 is arranged on one side of the controller main body 4, a cooler 6 is arranged on one side, away from the controller main body 4, of the oil tank 5, oil can be rapidly and effectively cooled by utilizing an evaporative cooling area, the cooler 6 comprises a compressor 601, a heat exchanger 602, a liquid storage tank 603, an economizer 604, a filter 605, an expansion valve 606, an evaporator 607, a gas-liquid separator 608, a water pump 609 and an external water tank 610, a heating assembly 7 is arranged above the controller main body 4 and inside the shell 1, and when the temperature in the oil tank 5 is low, the heating assembly 7 is used for heating the shell, a heat radiation fan 8 is arranged on the end face of the shell 1, and an oil pipeline 9 and a cooling water pipeline 10 are sequentially arranged on the back face of the shell 1 from top to bottom.
In the embodiment, referring to fig. 1 and fig. 3, the end surface of the housing 1 is uniformly provided with heat dissipation holes 101, the side wall of the side guard plate 2 is uniformly provided with vent holes 201, so as to enhance the heat dissipation function of the device, the output end of the compressor 601 is connected with the input port of the heat exchanger 602 through a pipeline, the compressor 601 converts low-temperature and low-pressure gaseous refrigerant into high-pressure and high-temperature gaseous refrigerant, the output end of the heat exchanger 602 is connected with the liquid storage tank 603 through a pipeline, the high-pressure refrigerant after heat exchange is condensed into liquid at normal temperature and enters the liquid storage tank 603, the output end of the liquid storage tank 603 is connected with the economizer 604 through a pipeline, the gaseous end of the economizer 604 is connected to the compressor 601 through a pipeline, the refrigerant enters the economizer 604 and then throttles, evaporates and absorbs heat, so that another part of the refrigerant is supercooled, the liquid end of the economizer 604 is connected with a filter 605 through a pipeline, and the output end of the filter 605 is connected with the expansion valve 606 through a pipeline, the medium-temperature high-pressure liquid refrigerant is throttled into low-temperature low-pressure wet steam, the other end of the expansion valve 606 is connected with the input end of the evaporator 607 through a pipeline, the output end of the evaporator 607 is connected with the gas-liquid separator 608 through a pipeline, the evaporator 607 is arranged inside the oil tank 5, hot oil in the oil tank 5 is rapidly cooled by the evaporator 607, the output end of the gas-liquid separator 608 is connected with the input end of the compressor 601 through a pipeline, the inside of the heat exchanger 602 is provided with a cooling chamber 6021, the input end of the water pump 609 is connected with the external water tank 610 through a pipeline, the output end of the water pump 609 is connected with the cooling chamber 6021, the output end of the cooling chamber 6021 is connected with the external water tank 610, and the refrigerant is subjected to heat exchange by cooling water of the external water tank 610.
In an embodiment, referring to fig. 1, fig. 2 and fig. 3, the heat exchanger 602 and the evaporator 607 are both copper bent pipes, the copper pipes have high thermal conductivity, thereby enhancing the heat exchange efficiency of the apparatus, the oil pipe 9 is respectively connected to the controller main body 4 and the oil tank 5 through pipes, the oil pipe 9 is provided with an oil outlet pipe and an oil return pipe for transporting oil therebetween to control the temperature of the mold, the cooling water pipe 10 is respectively connected to the cooler 6 and the external water tank 610 through pipes, and is used for connecting the external water tank 610 to continuously provide cooling water for the cooling chamber, the control panel 3 is respectively connected to the controller main body 4, the cooler 6, the cooling fan 8 and the heating assembly 7 through wires, and the connection modes are all electrical connections, the apparatus is centrally managed through the control panel 3, and the operation by a user is facilitated.
The working process of the utility model is as follows: firstly, an oil pipeline 9 is connected with a mold machine needing cooling, a cooling water pipeline 10 is connected with an external water tank 610, a control panel 3 is respectively connected with a controller main body 4, a cooler 6, a cooling fan 8 and a heating assembly 7 through leads, the connection modes are all electrically connected, centralized management is carried out on the device through the control panel 3, the operation of a user is facilitated, the control panel 3 always detects the oil temperature in an oil tank 5, if the oil temperature is lower than a low-temperature early warning value, the heating assembly 7 is started, a heating pipe in the heating assembly 7 carries out heating treatment on the oil tank 5 to enable the oil temperature to be higher than the low-temperature early warning value, if the oil temperature is higher than the high-temperature early warning value, the cooler 6 is started, a compressor 601 converts low-temperature and low-pressure gaseous refrigerants into high-temperature gaseous refrigerants, the high-pressure and high-temperature gaseous refrigerants enter a heat exchanger 602, a water pump 609 is started, the water pump 609 continuously conveys cooling water of the external water tank 610 into a cooling chamber 6021, namely, the heat exchange is carried out with high-pressure and high-temperature gaseous refrigerants, the high-pressure refrigerants are condensed into liquid at normal temperature after the heat exchange and enter a liquid storage tank 603, the output end of the liquid storage tank 603 is connected with an economizer 604 through a pipeline, the gaseous end of the economizer 604 is connected with a compressor 601 through a pipeline, the refrigerant throttles and evaporates to absorb heat after entering the economizer 604 so as to supercool the other part of the refrigerant, the liquid end of the economizer 604 is connected with a filter 605 through a pipeline, the output end of the filter 605 is connected with an expansion valve 606 through a pipeline to throttle the medium-temperature and high-pressure liquid refrigerants into low-temperature and low-pressure wet steam, the other end of the expansion valve 606 is connected with the input end of an evaporator 607 through a pipeline, the output end of the evaporator 607 is connected with a gas-liquid separator 608 through a pipeline, the evaporator 607 is arranged inside an oil tank 5, and the evaporator 607 is used for rapidly cooling hot oil in the oil tank 5, the output end of the gas-liquid separator 608 is connected to the input end of the compressor 601 through a pipeline, and the output end of the compressor 601 is connected to the input end of the heat exchanger 602 through a pipeline, so that hot oil in the oil tank 5 is cooled back and forth until the oil temperature is lower than the high-temperature early warning value.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1.一种高温油式模具温度控制机,包括壳体(1),其特征在于:所述壳体(1)的侧壁均安装有侧护板(2),所述壳体(1)的正面设置有控制面板(3),所述壳体(1)的内部设置有控制机主体(4),所述控制机主体(4)的一侧设置有油箱(5),所述油箱(5)远离控制机主体(4)的一侧设置有冷却器(6),所述冷却器(6)包括压缩机(601)、热交换器(602)、储液罐(603)、经济器(604)、过滤器(605)、膨胀阀(606)、蒸发器(607)、气液分离器(608)、水泵(609)和外部水箱(610),所述控制机主体(4)的上方并且位于壳体(1)的内部设置有加热组件(7),所述壳体(1)的端面设置有散热风扇(8),所述壳体(1)的背面自上而下依次设置有油管路(9)和冷却水管路(10)。1. A high-temperature oil-type mold temperature control machine, comprising a casing (1), characterized in that: side shields (2) are installed on the side walls of the casing (1), and the casing (1) A control panel (3) is arranged on the front of the casing (1), a controller main body (4) is arranged inside the casing (1), and an oil tank (5) is arranged on one side of the controller main body (4), and the oil tank ( 5) A cooler (6) is provided on the side away from the main body (4) of the controller, and the cooler (6) includes a compressor (601), a heat exchanger (602), a liquid storage tank (603), an economizer (604), filter (605), expansion valve (606), evaporator (607), gas-liquid separator (608), water pump (609) and external water tank (610), the A heating assembly (7) is arranged above and inside the casing (1), a cooling fan (8) is arranged on the end face of the casing (1), and the back of the casing (1) is arranged in sequence from top to bottom There are oil pipelines (9) and cooling water pipelines (10). 2.根据权利要求1所述的一种高温油式模具温度控制机,其特征在于:所述壳体(1)的端面均匀设置有散热孔(101),所述侧护板(2)的侧壁均匀设置有通风孔(201)。2. A high-temperature oil-type mold temperature control machine according to claim 1, characterized in that: the end surface of the casing (1) is evenly provided with heat dissipation holes (101), and the side shields (2) are provided with heat dissipation holes (101). The side walls are evenly provided with ventilation holes (201). 3.根据权利要求1所述的一种高温油式模具温度控制机,其特征在于:所述压缩机(601)的输出端通过管道连接热交换器(602)的输入口,所述热交换器(602)的输出端通过管道连接储液罐(603),所述储液罐(603)的输出端通过管道连接经济器(604),所述经济器(604)的气态端通过管道连接到压缩机(601),所述经济器(604)的液态端通过管道连接过滤器(605),所述过滤器(605)的输出端通过管道连接膨胀阀(606),所述膨胀阀(606)的另一端通过管道连接蒸发器(607)的输入端,所述蒸发器(607)的输出端通过管道连接气液分离器(608),所述蒸发器(607)设置在油箱(5)的内部,所述气液分离器(608)的输出端通过管道连接压缩机(601)的输入端,所述热交换器(602)的内部设置有冷却室(6021),所述水泵(609)的输入端通过管道连接外部水箱(610),所述水泵(609)的输出端连接冷却室(6021),所述冷却室(6021)的输出端连接外部水箱(610)。3. A high-temperature oil-type mold temperature control machine according to claim 1, characterized in that: the output end of the compressor (601) is connected to the input port of the heat exchanger (602) through a pipeline, and the heat exchange The output end of the device (602) is connected to the liquid storage tank (603) through a pipeline, the output end of the liquid storage tank (603) is connected to the economizer (604) through a pipeline, and the gaseous end of the economizer (604) is connected through a pipeline To the compressor (601), the liquid end of the economizer (604) is connected to a filter (605) through a pipeline, and the output end of the filter (605) is connected to an expansion valve (606) through a pipeline, and the expansion valve ( The other end of 606) is connected to the input end of the evaporator (607) through a pipeline, and the output end of the evaporator (607) is connected to the gas-liquid separator (608) through a pipeline, and the evaporator (607) is arranged in the oil tank (5). ), the output end of the gas-liquid separator (608) is connected to the input end of the compressor (601) through a pipeline, a cooling chamber (6021) is provided inside the heat exchanger (602), and the water pump ( The input end of 609) is connected to the external water tank (610) through pipes, the output end of the water pump (609) is connected to the cooling chamber (6021), and the output end of the cooling chamber (6021) is connected to the external water tank (610). 4.根据权利要求3所述的一种高温油式模具温度控制机,其特征在于:所述热交换器(602)和蒸发器(607)内部均为铜制弯管。4. A high-temperature oil-type mold temperature controller according to claim 3, wherein the heat exchanger (602) and the evaporator (607) are both made of copper elbows. 5.根据权利要求3所述的一种高温油式模具温度控制机,其特征在于:所述油管路(9)分别通过管道连接控制机主体(4)和油箱(5),所述冷却水管路(10)分别通过管道连接冷却器(6)和外部水箱(610)。5. A high-temperature oil-type mold temperature controller according to claim 3, characterized in that: the oil pipeline (9) is connected to the main body (4) of the controller and the oil tank (5) through pipes, and the cooling water pipeline The road (10) connects the cooler (6) and the external water tank (610) through pipes, respectively. 6.根据权利要求3所述的一种高温油式模具温度控制机,其特征在于:所述控制面板(3)分别通过导线连接控制机主体(4)、冷却器(6)、散热风扇(8)和加热组件(7)并且连接方式均为电性连接。6. A high-temperature oil-type mold temperature control machine according to claim 3, characterized in that: the control panel (3) is connected to the control machine main body (4), the cooler (6), the cooling fan ( 8) and the heating assembly (7) and the connection methods are all electrically connected.
CN202122766368.7U 2021-11-12 2021-11-12 High-temperature oil type mold temperature controller Expired - Fee Related CN216384592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122766368.7U CN216384592U (en) 2021-11-12 2021-11-12 High-temperature oil type mold temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122766368.7U CN216384592U (en) 2021-11-12 2021-11-12 High-temperature oil type mold temperature controller

Publications (1)

Publication Number Publication Date
CN216384592U true CN216384592U (en) 2022-04-26

Family

ID=81250927

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122766368.7U Expired - Fee Related CN216384592U (en) 2021-11-12 2021-11-12 High-temperature oil type mold temperature controller

Country Status (1)

Country Link
CN (1) CN216384592U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118721544A (en) * 2024-07-12 2024-10-01 山东锦东工程材料有限公司 Dual-in-one mold temperature controller for glass fiber composite molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118721544A (en) * 2024-07-12 2024-10-01 山东锦东工程材料有限公司 Dual-in-one mold temperature controller for glass fiber composite molding

Similar Documents

Publication Publication Date Title
CN216384592U (en) High-temperature oil type mold temperature controller
CN203516008U (en) A double recovery system for oil and gas heat
CN110486940A (en) A kind of boiler using air energy
CN108613381A (en) A kind of new and effective air energy heat pump
CN201463403U (en) A constant temperature industrial chiller
CN111256213A (en) A kitchen cleanable air-conditioning air energy intelligent detection fresh air system integrated cabinet
CN208832641U (en) A kind of air conditioner used in kitchen air energy smoke pumping all-in-one machine
CN201407766Y (en) water-cooled cooler
CN105627630A (en) Heat pump system
CN206670031U (en) Electric heater
CN204830557U (en) High -efficient air source heat pump system suitable for low temperature environment
CN205403249U (en) Heat pump system
CN213778366U (en) A heat insulation and energy saving high and low temperature integrated machine
CN208567122U (en) A kind of new and effective air energy heat pump
CN210123208U (en) Water-cooling screw type water chiller
CN207662006U (en) A kind of two level parallel connection heat pump unit
CN211557815U (en) Electric machine room cooling system
CN202171364U (en) High-efficient practical semi-conductor refrigerating and heating storage box
CN209147793U (en) It is a kind of suitable for Chemical Manufacture when the cooling heat exchanger of high-temp liquid
CN208751066U (en) A kind of novel air-cooling type cooling-water machine
CN215176017U (en) Ultra-low temperature heat pump A type structure
CN213421511U (en) Cold and hot double-temperature water chiller
CN207035314U (en) A kind of air conditioner
CN219037083U (en) Heat pump water heater with heat exchange of inner and outer double coils
CN215490331U (en) Water source high-temperature hot air heat pump system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20220426