CN204006227U - Range hood - Google Patents
Range hood Download PDFInfo
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- CN204006227U CN204006227U CN201420436998.5U CN201420436998U CN204006227U CN 204006227 U CN204006227 U CN 204006227U CN 201420436998 U CN201420436998 U CN 201420436998U CN 204006227 U CN204006227 U CN 204006227U
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- jet pipe
- range hood
- impeller
- perforate
- injection portion
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Abstract
The utility model discloses a kind of range hood, comprising: fuselage; Impeller, described impeller is pivotably mounted on described fuselage, and described impeller is provided with multiple along its circumferential blade arranged spaced apart; And jet pipe, the contiguous described impeller setting of described jet pipe, described jet pipe is provided with spray orifice, and one end of described jet pipe is opened wide, and the end of the other end is provided with perforate.According to range hood of the present utility model, in the time adopting steam and/or water to clean, granular incrustation scale in steam generator can be blown to jet pipe place by high steam, and then spray from the perforate of the jet pipe other end, avoid incrustation scale to stop up jet pipe, thereby the cleaning performance that the life-span that effectively promotes jet pipe ensures simultaneously, asks professional person to carry out maintenance of clean-up without cost cost, and serviceability is good.
Description
Technical field
The utility model relates to household electrical appliance technical field, more specifically, relates to a kind of range hood.
Background technology
The steam and/or the water purging system that on lampblack absorber, use at present, have a jet pipe conventionally, and steam and/or water enter in jet pipe, and the then ejection of the perforate from jet pipe, cleans range hood.
Be used at present steam and wash the normally running water of water on range hood, can use pure water because cost reason seldom has consumer; And current lampblack absorber, to entering the running water before steam generator, does not almost carry out purified treatment, or is only to filter by common filter cotton and/or screen pack.This,, by after causing impurity at least part of running water to heat such as mineral matter will enter steam generator, can produce a large amount of incrustation scales, and these incrustation scale parts remain in steam generator, and a part will enter in jet pipe along with steam and/or hot water.
A kind of jet pipe in correlation technique, offers some perforates on jet pipe, the sealing that is flattened of jet pipe end.Because jet pipe need to possess certain jet power, so diameter is restricted, the perforate meeting on jet pipe is very little simultaneously.This is the perforate causing on jet pipe, is easy to be stopped up by incrustation scale out from steam generator, and water and/or steam be can't get out, and affects cleaning performance.
Another kind of jet pipe in correlation technique, one end of jet pipe is formed as detachable termination, after jet pipe is stopped up by incrustation scale, can, by dismounting termination, process the incrustation scale of deposition.There is inconvenient operation problem in this nozzle structure, because jet pipe, in machine tool inside, be realized jet pipe and dismantle and clear up incrustation scale, general user does not possess this operational capacity, and need trust specialty after sale employee is processed, and therefore can increase user's use cost.
Utility model content
The utility model is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, the utility model is intended to propose a kind of range hood, and the jet pipe on described range hood is difficult for stopping up, long service life.
According to range hood of the present utility model, comprising: fuselage; Impeller, described impeller is pivotably mounted on described fuselage, and described impeller is provided with multiple along its circumferential blade arranged spaced apart; And jet pipe, the contiguous described impeller setting of described jet pipe, described jet pipe is provided with spray orifice, and one end of described jet pipe is opened wide, and the end of the other end is provided with perforate.
According to range hood of the present utility model, in the time adopting steam and/or water to clean, granular incrustation scale in steam generator can be blown to jet pipe place by high steam, and then spray from the perforate of the jet pipe other end, avoid incrustation scale to stop up jet pipe, thereby the cleaning performance that the life-span that effectively promotes jet pipe ensures simultaneously, asks professional person to carry out maintenance of clean-up without cost cost, and serviceability is good.
In addition, can also there is following additional technical characterictic according to range hood of the present utility model:
According to an embodiment of the present utility model, described jet pipe comprises: injection portion, described injection portion is located in described impeller and the inner peripheral surface setting of contiguous described impeller, and described spray orifice is located on the side wall surface of described injection portion, and the other end of described injection portion is provided with described perforate.
According to an embodiment of the present utility model, described jet pipe also comprises: connecting portion, and described connecting portion is formed as being suitable for the body with extraneous pipeline connection, and one end of described connecting portion is opened wide; And transition part, one end of described transition part is connected with the other end of described connecting portion; Described connecting portion is not connected with the other end is vertical with one end of described transition part with described spout part, and the axial length of described injection portion is greater than the axial length of described connecting portion.
According to an embodiment of the present utility model, the other end of described injection portion is provided with along its axially extended aperture portion, and the radial dimension of described aperture portion is less than the radial dimension of described injection portion, and the end of described aperture portion is provided with described perforate.
According to an embodiment of the present utility model, described aperture portion is formed as platypelloid type body.
According to an embodiment of the present utility model, the described perforate of open ended formation of described aperture portion.
According to an embodiment of the present utility model, the perforate direction of described perforate is identical with the axis direction of described injection portion.
According to an embodiment of the present utility model, described aperture portion and described injection portion are integrally formed.
According to an embodiment of the present utility model, described injection portion and described connecting portion respectively with described transition part rounding off.
According to an embodiment of the present utility model, the radial dimension of described perforate is 1.5mm-3mm.
Brief description of the drawings
Fig. 1 is the assembly structure schematic diagram according to the fuselage of the range hood of the utility model embodiment, impeller and jet pipe;
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1;
Fig. 3 is the assembly structure schematic diagram according to the fuselage of the range hood of the utility model embodiment and impeller;
Fig. 4 is according to the structural representation of the jet pipe of the range hood of the utility model embodiment;
Fig. 5 is according to the view of another angle of the jet pipe of the range hood of the utility model embodiment;
Fig. 6 is the cutaway view of the jet pipe of range hood shown in Fig. 4;
Fig. 7 is according to the structural representation of the impeller cover of the range hood of the utility model embodiment;
Fig. 8 is according to the structural representation of the cover plate of the range hood of the utility model embodiment.
Reference numeral:
Range hood 100;
Fuselage 10;
Impeller 20; Blade 21;
Jet pipe 30; Spray orifice 31; Perforate 32; Connecting portion 33; Transition part 34; Injection portion 35; Aperture portion 36;
Impeller cover 40;
Cover plate 50.
Detailed description of the invention
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, First Characteristic Second Characteristic " on ", " top " and " above " can be First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
Describe in detail according to the range hood 100 of the utility model embodiment below in conjunction with accompanying drawing.
With reference to as shown in Figures 1 to 8, comprise fuselage 10, impeller 20 and jet pipe 30 according to the range hood 100 of the utility model embodiment.Impeller 20 is pivotably mounted on fuselage 10, and impeller 20 is provided with multiple blades 21, and multiple blades 21 are circumferentially arranged spaced apart along impeller 20.Jet pipe 30 adjacent impeller 20 arrange.Jet pipe 30 is provided with spray orifice 31, and one end of jet pipe 30 is opened wide, and the end of the other end is provided with perforate 32.
Particularly, the head end of jet pipe 30 can be connected with steam generator, and the tail end of jet pipe 30 can adjacent impeller 20 arrange, and the head end that jet pipe 30 is connected with evaporimeter can open wide, and the tail end of jet pipe 30 can be provided with perforate 32.
According to the range hood 100 of the utility model embodiment, by perforate 32 being set at the other end of jet pipe 30, in the time adopting steam and/or water to clean, granular incrustation scale in steam generator can be blown to jet pipe 30 places by high steam, and then spray from the perforate 32 of jet pipe 30 other ends, thereby be conducive to discharge incrustation scale, avoid stopping up jet pipe 30, thereby the cleaning performance that the life-span that effectively promotes jet pipe 30 ensures simultaneously, ask professional person to carry out maintenance of clean-up without cost cost, serviceability is good.
It should be noted that, in the time that water that jet pipe 30 sprays and/or steam can be ejected on the blade 21 of impeller 20, can be understood as jet pipe 30 adjacent impeller 20 and arrange.That is to say, the water that jet pipe 30 can spray in jet pipe 30 and/or steam can be ejected in the position range on the blade 21 of impeller 20.Thus, jet pipe 30 can be on multiple positions, and for example jet pipe 30 can be positioned at the side of impeller 20, or are positioned at the inside of impeller 20.
As shown in Figure 4, jet pipe 30 can comprise injection portion 35, and water outlet and/or steam can spray in injection portion 35.In order to improve the cleaning performance of jet pipe 30 to impeller 20, advantageously, the injection portion 35 of jet pipe 30 can be arranged in impeller 20 and the inner peripheral surface setting of adjacent impeller 20.Particularly, as depicted in figs. 1 and 2, multiple blades 21 are circumferentially connected and arrange along impeller 20, before and after the middle part of impeller 20, are formed through hollow structure, and jet pipe 30 is arranged in the hollow space of impeller 20, and blades adjacent 21 arranges.Thus, water and/or steam can be ejected on impeller 20 more smoothly, so that impeller 20 is cleaned.
Spray orifice 31 can be located on the side wall surface of injection portion 35.Particularly, the blade 21 of spray orifice 31 on can impeller 20 adjacent thereto is relative, easily water and/or steam are sprayed onto on the blade 21 of impeller 20, blade 21 is cleaned.The shape of spray orifice 31 can be formed as multiple, and for example, spray orifice 31 can be formed as circular port.Spray orifice 31 can comprise multiple, and multiple spray orifices 31 can spaced apartly be located on the side wall surface of injection portion 35.
Advantageously, as shown in Figure 5 and Figure 6, multiple spray orifices 31 can be positioned on the axial identical same straight line with injection portion 35.Thus, multiple spray orifices 31 spray water and/or steam can form the axially extended jet face along injection portion 35, more comprehensive to the cleaning of blade 21, and cleaning performance is good.
The other end of injection portion 35 is provided with perforate 32, and particularly, the free end of jet pipe 30 is provided with perforate 32.In the time adopting steam and/or water to clean, the granular incrustation scale in steam generator can be blown to jet pipe 30 places by high steam.Due to the steam flow in the free-ended perforate of jet pipe 30 32 and jet pipe 30 in the same way, incrustation scale can be from the interior discharge of perforate 32, has avoided jet pipe 30 to be subject to the obstruction of incrustation scale, effectively promotes the cleaning performance that life-span of purging system ensures simultaneously.
Further, as shown in Figure 4, jet pipe 30 also can comprise connecting portion 33 and transition part 34.Connecting portion 33 is connected with steam generator, and transition part 34 is located between connecting portion 33 and injection portion 35, to be communicated with connecting portion 33 and injection portion 35, steam and/or water in steam generator can be flow in injection portion 35.
Particularly, connecting portion 33 can be formed as being suitable for the body with extraneous pipeline connection, on fuselage 10, can be provided with installing hole, and connecting portion 33 can penetrate in installing hole.Connecting portion 33 and extraneous pipeline as steam generator be connected one end open wide and arrange.One end of transition part 34 is connected with the other end of connecting portion 33, and the other end of transition part 34 is connected with one end of injection portion 35.
Jet pipe 30 can entirety be formed as the cylindrical tube bending, and alternatively, connecting portion 33 is connected with the other end is vertical with one end of transition part 34 respectively with injection portion 35, and the axial length of injection portion 35 is greater than the axial length of connecting portion 33.Thus, injection portion 35 can easily and easily be placed in impeller 20, and spray orifice 31 and perforate 32 in injection portion 35 can be positioned at impeller 20, convenient blade 21 is cleaned.
The other end of injection portion 35 is provided with along its axially extended aperture portion 36, and the radial dimension of aperture portion 36 is less than the radial dimension of injection portion 35, and the end of aperture portion 36 is provided with perforate 32.Thus, the radial dimension of perforate 32 is less than the radial dimension of injection portion 35, the radial dimension of perforate 32 is less, make the end of aperture portion 36 can possess relatively strong jet power, steam flow in perforate 32 and the jet pipe 30 of jet pipe 30 in the same way simultaneously, water and/or steam can more smooth and easyly be discharged by perforate 32, thereby make incrustation scale be easier to discharge nozzle 30, effectively avoid jet pipe 30 to be stopped up by incrustation scale out from steam generator, effectively extend the life-span of purging system, ask professional person to carry out maintenance of clean-up without cost cost, maintenance cost is low.
The radial dimension of perforate 32 can be 1.5-3mm, and advantageously, the radial dimension of perforate 32 is 2.5mm, and the perforate 32 of this size has certain jet power can ensure that the discharge of water and/or steam is larger simultaneously, is conducive to incrustation scale and discharges with water and/or steam.
Alternatively, aperture portion 36 can be formed as platypelloid type body, and particularly, aperture portion 36 can form the platypelloid type body radially flattening, and the end of aperture portion 36 can be opened wide and form perforate 32.The aperture portion 36 of this structure can improve the jet power of water and/or steam, and incrustation scale is easier to from the interior ejection of perforate 32, and this structure is easy to prepare moulding simultaneously, can effectively reduce preparation cost.
Aperture portion 36 can be integrally formed with injection portion 35.This structure being integrally formed can be reduced forming step, facilitates machine-shaping, has ensured the compactness that is connected between aperture portion 36 and injection portion 35 simultaneously, avoids being connected insecure between aperture portion 36 and injection portion 35 and leaks or gas leak phenomenon.
Advantageously, perforate 32 directions of aperture portion 36 are identical with the axis direction of injection portion 35.Thus, the water in injection portion 35 and/or the injection direction of steam are relative with perforate 32, and the water in injection portion 35 and/or steam can be directly from the interior ejections of perforate 32, thereby are easier to take incrustation scale out of jet pipe 30, make the interior difficult gathering incrustation scale of jet pipe 30, avoid stopping up.
Injection portion 35 can with transition part 34 rounding ofves, connecting portion 33 can with transition part 34 rounding ofves.Particularly, injection portion 35 can be set to curved pipe with the junction of transition part 34, and injection portion 35 can be set to curved pipe with the junction of transition part 34.Jet pipe 30 internal duct of this structure are more level and smooth, and water and/or steam are easier to the sweep by pipeline, and flowing of the water in jet pipe 30 and/or steam is more smooth and easy, are difficult for occurring incrustation scale and gather.
The molding mode of jet pipe 30 can have multiple, and for example, injection portion 35, connecting portion 33 and transition part 34 can be connected to jet pipe 30 after point body formed.Again for example, injection portion 35, connecting portion 33 can one-body moldedly be jet pipe 30 with transition part 34, and jet pipe 30 structural stabilities that this is integrally formed are high, good seal performance, difficult leaking, long service life.
, first impeller 20 can be assemblied on fuselage 10 during according to the range hood 100 of the utility model embodiment in assembling, particularly, on fuselage 10, can be provided with impeller cavity, impeller 20 is embedded in impeller cavity.Then the connecting portion of jet pipe 30 33 can be inserted in the installing hole of fuselage 10, to be connected with steam generator, and the angle of adjustable jet tube 30, make the injection portion 35 of jet pipe 30 be positioned at impeller 20, again impeller cover 40 is arranged on impeller 20, impeller cover 40 is covered on jet pipe 30, finally cover plate 50 is assemblied on fuselage 10.
In the time cleaning according to the range hood 100 of the utility model embodiment, can open steam generator, water and/or steam can enter into jet pipe 30, and are ejected into the blade 21 of impeller 20 from jet pipe 30.Particularly, the water and/or the steam that flow out from steam generator can enter into transition part 34 from tube connector, enter into injection portion 35 from transition part 34 again, then the spray orifice 31 from injection portion 35 and the interior ejection of perforate 32, from the water of spray orifice 31 interior ejections or/steam can be ejected into the blade 21 of impeller 20, thereby blade 21 is cleaned, from the water of perforate 32 interior ejections or/steam can take incrustation scale out of spray orifice 31, make that jet pipe 30 is interior is difficult for gathering incrustation scale, extend the service life of jet pipe 30.
Other formations of the range hood 100 of implementing according to the utility model and operation are known for the person of ordinary skill of the art, are not described in detail at this.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this description or example and different embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, amendment, replacement and modification.
Claims (10)
1. a range hood, is characterized in that, comprising:
Fuselage;
Impeller, described impeller is pivotably mounted on described fuselage, and described impeller is provided with multiple along its circumferential blade arranged spaced apart; And
Jet pipe, the contiguous described impeller setting of described jet pipe, described jet pipe is provided with spray orifice, and one end of described jet pipe is opened wide, and the end of the other end is provided with perforate.
2. range hood according to claim 1, is characterized in that, described jet pipe comprises:
Injection portion, described injection portion is arranged in described impeller and the inner peripheral surface setting of contiguous described impeller, and described spray orifice is located on the side wall surface of described injection portion, and the other end of described injection portion is provided with described perforate.
3. range hood according to claim 2, is characterized in that, described jet pipe also comprises:
Connecting portion, described connecting portion is formed as being suitable for the body with extraneous pipeline connection, and one end of described connecting portion is opened wide; With
Transition part, one end of described transition part is connected with the other end of described connecting portion;
Described connecting portion is not connected with the other end is vertical with one end of described transition part with described spout part, and the axial length of described injection portion is greater than the axial length of described connecting portion.
4. range hood according to claim 2, is characterized in that, the other end of described injection portion is provided with along its axially extended aperture portion, and the radial dimension of described aperture portion is less than the radial dimension of described injection portion, and the end of described aperture portion is provided with described perforate.
5. range hood according to claim 4, is characterized in that, described aperture portion is formed as platypelloid type body.
6. range hood according to claim 5, is characterized in that, the described perforate of open ended formation of described aperture portion.
7. range hood according to claim 6, is characterized in that, the perforate direction of described perforate is identical with the axis direction of described injection portion.
8. range hood according to claim 4, is characterized in that, described aperture portion and described injection portion are integrally formed.
9. range hood according to claim 3, is characterized in that, described injection portion and described connecting portion respectively with described transition part rounding off.
10. according to the range hood described in any one in claim 1-9, it is characterized in that, the radial dimension of described perforate is 1.5mm-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436998.5U CN204006227U (en) | 2014-08-04 | 2014-08-04 | Range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436998.5U CN204006227U (en) | 2014-08-04 | 2014-08-04 | Range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204006227U true CN204006227U (en) | 2014-12-10 |
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ID=52046223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420436998.5U Active CN204006227U (en) | 2014-08-04 | 2014-08-04 | Range hood |
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| Country | Link |
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| CN (1) | CN204006227U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678915A (en) * | 2017-02-14 | 2017-05-17 | 浙江工业大学 | Direct-current drive reverse rotating range hood and lampblack discharge and self-cleaning method thereof |
| CN106678910A (en) * | 2016-12-09 | 2017-05-17 | 广东美的厨房电器制造有限公司 | Oil screen assembly for range hood and range hood comprising same |
| CN109751639A (en) * | 2017-11-02 | 2019-05-14 | 青岛海尔智能技术研发有限公司 | A kind of cleaning structure and its application method of range hood |
| CN110805943A (en) * | 2017-05-23 | 2020-02-18 | 广东美的厨房电器制造有限公司 | Smoke exhaust ventilator |
| CN113757184A (en) * | 2021-08-04 | 2021-12-07 | 浙江大学 | Lampblack absorber impeller air current cleaning device |
-
2014
- 2014-08-04 CN CN201420436998.5U patent/CN204006227U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678910A (en) * | 2016-12-09 | 2017-05-17 | 广东美的厨房电器制造有限公司 | Oil screen assembly for range hood and range hood comprising same |
| CN106678910B (en) * | 2016-12-09 | 2019-03-29 | 广东美的厨房电器制造有限公司 | For the oil network component of kitchen ventilator and with its kitchen ventilator |
| CN106678915A (en) * | 2017-02-14 | 2017-05-17 | 浙江工业大学 | Direct-current drive reverse rotating range hood and lampblack discharge and self-cleaning method thereof |
| CN106678915B (en) * | 2017-02-14 | 2019-05-31 | 浙江工业大学 | A kind of DC driven reversible type kitchen ventilator and its mist extractor, method for self-cleaning |
| CN110805943A (en) * | 2017-05-23 | 2020-02-18 | 广东美的厨房电器制造有限公司 | Smoke exhaust ventilator |
| CN109751639A (en) * | 2017-11-02 | 2019-05-14 | 青岛海尔智能技术研发有限公司 | A kind of cleaning structure and its application method of range hood |
| CN113757184A (en) * | 2021-08-04 | 2021-12-07 | 浙江大学 | Lampblack absorber impeller air current cleaning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230628 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241209 Mei Kitchen and Sanitary Industrial Park, Wanchun Street, Wuhu Economic and Technological Development Zone, Anhui Province Patentee before: WUHU MIDEA KITCHEN APPLIANCE MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right |