CN205332285U - Microwave oven - Google Patents
Microwave oven Download PDFInfo
- Publication number
- CN205332285U CN205332285U CN201620101594.XU CN201620101594U CN205332285U CN 205332285 U CN205332285 U CN 205332285U CN 201620101594 U CN201620101594 U CN 201620101594U CN 205332285 U CN205332285 U CN 205332285U
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- China
- Prior art keywords
- microwave
- microwave oven
- mast
- hot cell
- antenna
- 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.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Constitution Of High-Frequency Heating (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The utility model relates to the field of household appliances, a microwave oven is disclosed, this microwave oven includes semiconductor microwave generator (1), heating chamber (2) and is used for the conversion the microwave that semiconductor microwave generator (1) produced with this microwave transmission extremely antenna (3) in heating chamber (2), this antenna (3) are including antenna mast (31) that have helical structure, the feed -in end of this antenna mast (31) connect in the power output end of semiconductor microwave generator (1) to can follow the other end to transmission microwave in heating chamber (2). The utility model discloses a microwave oven utilizes semiconductor microwave generator (1) to produce the microwave as the microwave source, and the security is high, and transmit the microwave through antenna mast (31) that have helical structure to heating chamber (2) to microwave transmission efficiency be can improve, in order to reduce the heating energy required like food, multiple power supplies, microwave source or antenna, simple structure are just need not to set up.
Description
Technical field
This utility model relates to household appliance technical field, in particular it relates to a kind of microwave oven。
Background technology
Microwave oven is one of cooking kitchen range common in modern society, its ultimate principle is that the microwave transmission utilizing antenna to be produced by microwave source (also known as " microwave generator ") is to adding in hot cell (i.e. cooking cavity), and set up microwave field in these heating indoor, so that the orientation of the polar molecule (such as water, fat, protein etc.) in food is with microwave field quick shift, this variation makes adjacent molecule interphase interaction, produce the effect of similar friction, thus heat food。By this principle of heating, microwave oven can uniformly, cooking food rapidly, thus be used widely。
Difference according to microwave source, microwave oven can be divided into again microwave magnetron stove and semiconductor microwave oven。Wherein, microwave magnetron stove obtains tremendous development in the conventional technology so that it can be readily available HIGH-POWERED MICROWAVES。And semiconductor microwave oven utilizes semiconductor microwave generator to produce microwave, power is relatively low。Recording according to pertinent literature, semiconductor device at least differs three orders of magnitude in obtaining microwave high power compared with magnetron。Although thus semiconductor microwave oven has simple in construction, safety height, low cost and other advantages, but microwave uses still to be predicted to be at heating art and will be mainly microwave magnetron stove。Further, since the greatest differences of microwave source working mechanism and generation microwave power aspect so that in the technical development of semiconductor microwave oven, it is difficult to parts and the technology of directly converting in microwave magnetron stove, and specific aim, adaptive minute design need to be carried out。This is because, magnetron is as self-oscillation vacuum device, and namely peripheral coupling structure and need for environment and magnetron are configured to global design, structure and the minor variations in size can affect the power output of magnetron；And semiconductor microactuator wave source is the device for being amplified by small-signal microwave, all entirely different in each side such as structure, principle, performance and effects with magnetron, the design criteria of the two is different, causes that technology conversion therebetween has feasibility hardly。
In microwave oven disclosed in Chinese invention patent CN102767854B, in order to overcome the technical problem that microwave power is low, it is provided with two or more semiconductor microwave generator, and by each self-corresponding antenna transmission microwave。Although it is by improving the problem that wave guide box structure suitably simplifies above-mentioned technological improvement brought structure complexity, volume is bigger, but the structure of this microwave oven is still complex (comprising two power supplys, two semiconductor microwave generator etc.), and is inevitably present the interactional problem of microwave。Additionally, magnet controlled microwave source higher for capacity efficiency is substantially become the semiconductor-type microwave source that multiple capacity efficiency is relatively low by this set, compare conventional magnetron type micro-wave stove to be only capable of improving safety, remarkable result is not played, in some instances it may even be possible to cause the consequence that cost goes up not down for saving the energy, reducing cost。
In view of this, it is necessary to provide a kind of new microwave oven, to solve above-mentioned problems of the prior art。
Utility model content
Technical problem to be solved in the utility model is to provide a kind of microwave oven, and this microwave oven has the saving energy, advantages of simple structure and simple。
In order to solve above-mentioned technical problem, this utility model provides a kind of microwave oven, this microwave oven includes semiconductor microwave generator, adds hot cell and for changing the microwave of described semiconductor microwave generator generation and by antenna indoor for this microwave transmission to described heating, described antenna includes the mast with helical structure, the feed side of this mast is connected to the power take-off of described semiconductor microwave generator, with can from the other end to described heating indoor transmissions microwave。
Preferably, described antenna also includes and the earth plate of described mast setting insulated from each other, and this earth plate is formed with the endoporus for the traverse of microwave transmission path and adds hot cell altogether with described。
Preferably, described earth plate is connected to shell or the pedestal of described semiconductor microwave generator。
Preferably, the outer conductor of the described earth plate radio frequency connector by being arranged in pairs is connected to shell or the pedestal of described semiconductor microwave generator, and the feed side of described mast is connected to the power take-off of described semiconductor microwave generator by the inner wire of described radio frequency connector。
Preferably, described antenna is connected to described semiconductor microwave generator by the radio frequency connector being arranged in pairs, and wherein, is connected to radio-frequency cable between the described radio frequency connector being arranged in pairs。
Preferably, described microwave oven also includes wave guide box, this wave guide box be connected to described in add on the outer wall in hot cell, described earth plate be fitted in this wave guide box away from the described side adding hot cell, and make the helical structure of described mast stretch in this wave guide box。
Preferably, described earth plate has the kink of the outer wall for adding hot cell described in engaging。
Preferably, the helical structure of described mast stretches to described heating indoor, and this adds the block piece being provided with on the internal face in hot cell for protecting described mast。
Preferably, the spiral number of turns of the helical structure of described mast is 2 circle～10 circles, and pitch is 4mm～50mm, and spiral external diameter is 10mm～80mm。
Preferably, the spiral number of turns of the helical structure of described mast is 2 circle～4 circles, and pitch is 13mm～17mm, and spiral external diameter is 18mm～22mm。
By technique scheme, microwave oven of the present utility model utilizes semiconductor microwave generator to produce microwave as microwave source, and safety is high；And by there is the mast of helical structure to adding hot cell transmission microwave such that it is able to improve microwave transmission efficiency, heat such as the energy needed for food to reduce, and without arranging multiple power supply, microwave source or antenna, simple in construction。
Other features and advantages of the utility model will be described in detail in detailed description of the invention part subsequently。
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below。In the accompanying drawings:
Fig. 1 is the attachment structure schematic diagram of the microwave oven according to the first embodiment of this utility model；
Fig. 2 is the structural representation of the antenna of the microwave oven in Fig. 1；
Fig. 3 a and Fig. 3 b is the connection diagram of the antenna in Fig. 2 and semiconductor microwave generator respectively；
Fig. 4 is the attachment structure schematic diagram of the microwave oven according to this utility model the second embodiment；
Fig. 5 is the attachment structure schematic diagram of the microwave oven according to the third embodiment of this utility model；
Fig. 6 is the attachment structure schematic diagram of the microwave oven according to the 4th kind of embodiment of this utility model；
Fig. 7 is the stationary wave characteristic figure of the antenna of the microwave oven according to a kind of preferred implementation of this utility model。
Description of reference numerals
1 semiconductor microwave generator 2 adds hot cell
3 antenna 31 masts
32 earth plate 321 kinks
4 radio frequency connector 41 outer conductors
42 inner wire 5 radio-frequency cables
6 wave guide box 7 block pieces
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail。It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model。
Shown in Fig. 6, this utility model provides a kind of microwave oven, and this microwave oven has semiconductor microwave generator 1, adds hot cell 2 and antenna 3。For those skilled in the art well known, the microwave that microwave source (such as magnetron, semiconductor microwave generator 1 etc.) produces needs to be converted to free space wave through guided wave and can be used to heating operation。Such as, in conventional art, the output aerial head on magnetron (it should be noted that, this output aerial head generally can connect antenna, but its effect is only change polarization mode and microwave directivity) and this utility model in antenna 3 be the parts for above-mentioned translation function。
Thus, antenna 3 of the present utility model can be changed the microwave transmitting it to that semiconductor microwave generator 1 produces and adds in hot cell 2 with heat food etc.。Specifically, antenna 3 includes the mast 31 with helical structure, and the feed side of this mast 31 is connected to the power take-off of semiconductor microwave generator 1 such that it is able to from the other end of this mast 31 to adding transmission microwave in hot cell 2。
It can be seen that in this utility model, microwave oven utilizes semiconductor microwave generator 1 to produce microwave as microwave source, has higher safety；And transmit microwave by having the mast 31 of helical structure to adding hot cell 2 such that it is able to improve microwave transmission efficiency, to reduce the energy needed for heat food。In this utility model, the antenna 3 of use even without or reduce relevant matches structure setting, it is possible to only exported and change microwave, simple in construction by single power supply, microwave source or antenna 3。Although it can be seen that energy or other causes in order to ensure abundance can further provide for some dependency structures in optimal way subsequently, but microwave oven of the present utility model is relatively simple in the structure of microwave source part, feed-in part, less costly on the whole。
Preferably, in order to reduce the power match between microwave leaky wave and each several part on the transmit path, antenna 3 can also include earth plate 32, this earth plate 32 and mast 31 setting insulated from each other, such as, with insulant, earth plate 32 and mast 31 can be separated, and earth plate 32 be formed the endoporus for the traverse of microwave transmission path and with add hot cell 2 altogether。Microwave transmission path refers mainly to the part between from the power take-off of semiconductor microwave generator 1 to the helical structure of mast 31 herein, is namely likely the partial straight lines section before the helical structure of mast 31 through the structure of described endoporus or subsequently it is preferred that the inner wire 42 etc. of radio frequency connector 4 in embodiment。
In this utility model, mast 31 can be made up of metal and low-loss material, as gold-plated in copper matrix etc.；Earth plate 32 can be made up of the material that metal and electric conductivity are good, as zinc-plated in copper or aluminum matter matrix etc.。
In heating process, it is necessary to being constrained in by microwave and add in hot cell 2, the wall adding hot cell 2 is generally made up of metal material, therefore, although setting up other materials sometimes as desired, but generally make earth plate 32 with add hot cell 2 wall compact siro spinning technology so that the two keep altogether。
In order to be more fully understood that above-mentioned and other feature in detail, the multiple concrete structure of microwave oven of the present utility model is described in detail below with reference to multiple preferred implementation of the present utility model。Wherein, for succinct and length consideration, for mutually isostructural part, its repeat specification will be omitted。
Shown in reference Fig. 1, the microwave oven according to the first preferred implementation of this utility model, there is semiconductor microwave generator 1, add hot cell 2 and include the antenna 3 of mast 31 and earth plate 32。The side of earth plate 32 directly contacts with the outside wall surface adding hot cell 2, although not shown, it is also possible to earth plate 32 is arranged on and adds in hot cell 2 so that its side directly contacts with the internal face adding hot cell 2。The helical structure of mast 31 stretches to and adds in hot cell 2, and this adds the block piece 7 being provided with on the internal face in hot cell 2 for protecting mast 31。Typically, this block piece 7 can be penetrated by microwave and not absorb the material of microwave and make, and such as mica sheet, plastics, glass etc., to avoid the dirt caused due to food splashing etc. to stick to the first-class problem of mast 31, affects microwave transmission efficiency。
Wherein, earth plate 32 can be directly or indirectly connected to shell or the pedestal (specific constructive form according to semiconductor microwave generator 1) of semiconductor microwave generator 1。Such as, shown in Fig. 2 and Fig. 3 a, paired radio frequency connector 4 it is provided with between earth plate 32 and semiconductor microwave generator 1, and earth plate 32 is connected to shell or the pedestal of semiconductor microwave generator 1 by the outer conductor 41 of this radio frequency connector 4, the feed side of mast 31 is connected to the power take-off of semiconductor microwave generator 1 by the inner wire 42 of this radio frequency connector 4。It is understood that herein and the radio frequency connector 4 of the following stated, a pair that connects semiconductor microwave generator 1 and antenna 3 respectively used including pairing, and when one of which is male, another one is female。Design, the motility manufacturing and debugging can be improved, it is simple to dismantle operation in case of need by radio frequency connector 4。
As another kind of optional embodiment, antenna 3 can also be directly connected to semiconductor microwave generator 1, as shown in Figure 3 b。In this case, earth plate 32 can directly contact with housing or the pedestal of semiconductor microwave generator 1, thus simultaneously with semiconductor microwave generator 1 and add hot cell 2 altogether simultaneously。Correspondingly, now the power take-off of mast 31 and semiconductor microwave generator 1 is directly connected to。By this connected mode, it is possible to make the feed-in part of microwave oven have succinct structure, reduce cost and power attenuation。But comparing and be indirectly connected with form above by radio frequency connector 4, its motility is relatively poor。
Shown in reference Fig. 4, the microwave oven according to this utility model the second preferred implementation, there is the structure substantially identical with the first preferred implementation above-mentioned。Its difference is in that, has additional radio-frequency cable 5。The advantage of this setup is in that, it is simple to the structure when semiconductor microwave generator 1 can not closely be directly connected to antenna 3 is arranged, so that the overall construction design of microwave oven has better motility。
Above two preferred implementation mainly illustrates the type of attachment between antenna 3 and semiconductor microwave generator 1, and describe earth plate 32 with add hot cell 2 be directly connected to form。Below with reference to other two kinds of preferred implementations, this antenna 3 it is described and adds and be indirectly connected with form between hot cell 2。On this basis, it is possible to optionally the feature of different embodiments is mutually combined, to constitute more embodiment。Such as, to can be used for other preferred implementations following medium for the radio-frequency cable 5 in above-mentioned the second preferred implementation。
Shown in reference Fig. 5, the microwave oven according to the third preferred implementation of this utility model, there is the structure substantially identical with the first preferred implementation above-mentioned。Its difference is in that, has additional wave guide box 6, and the helical structure of mast 31 stretches in this wave guide box 6。Normally, waveguide mouth can be set on the wall adding hot cell 2, make wave guide box 6 be fastened on waveguide mouth from outside and be connected with the outer wall adding hot cell 2, simultaneously, earth plate 32 fit in wave guide box 6 away from the side adding hot cell 2, thereby through this wave guide box 6 with add hot cell 2 altogether。
Shown in reference Fig. 6, the microwave oven according to the 4th kind of preferred implementation of this utility model, there is the structure substantially identical with the third preferred implementation above-mentioned。Its difference is in that, earth plate 32 has the kink 321 for engaging the outer wall adding hot cell 2, thus earth plate 32 directly contact with the outer wall adding hot cell 2 and altogether。
Namely the minor variations of antenna 3 is likely to cause the large change of microwave heating performance, for this reason, it may be necessary to carry out minute design。It addition, the performance of microwave heating is additionally subjected to the impact of the factors such as the size by heat space (cooking chamber such as microwave oven)。In designing antenna dimensional parameters process, it is necessary to consider above-mentioned many factors, obtain suitable antenna structure parameter through complicated calculating and long-term debugging。In this utility model, the impedance of antenna 3 is by normal impedance (50 Ω～75 Ω) design。And this utility model one comparatively preferred embodiment in, the spiral number of turns of the helical structure of mast 31 be 2 circle～10 circle, pitch is 4mm～50mm, and spiral external diameter is 10mm～80mm。The antenna 3 with above-mentioned key parameter can play the efficiency of transmission significantly improved in semiconductor microwave oven, to reduce power attenuation, to save cost。It addition, from embodiment subsequently it can be seen that the antenna of this utility model offer is owing to having above-mentioned dimensional parameters, it is possible in semiconductor microwave oven, obtain the power output of stability and high efficiency such that it is able to significantly improve the overall performance of microwave oven。
It is further preferred that the spiral number of turns of the helical structure of mast 31 is 2 circle～4 circles, pitch is 13mm～17mm, and spiral external diameter is 18mm～22mm。For understanding the advantage of this utility model preferred implementation intuitively, analyze the stationary wave characteristic of a kind of preferred structure of this utility model referring now to accompanying drawing 7。
As it is shown in fig. 7, the working frequency range of antenna 3 of the present utility model is 2.4GHz～2.5GHz, and weighed efficiency of transmission by standing-wave ratio。Wherein, when standing-wave ratio is 1～1.04, microwave transmission efficiency can be considered 100%, and this is extremely difficult to；When standing-wave ratio is 1.3, microwave transmission efficiency is 98.3%；When standing-wave ratio is 1.5, microwave transmission efficiency is 96%。The spiral number of turns of the helical structure of mast 31 is 3 circles, and pitch is 15mm, and spiral external diameter is 20mm。It can be seen that in above-mentioned working frequency range, the efficiency of transmission of antenna 3 of the present utility model is more than 96% such that it is able to heat food etc. efficiently。
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can being carried out multiple simple variant, these simple variant belong to protection domain of the present utility model。
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode。In order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by this utility model separately。
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally。
Claims (10)
1. a microwave oven, this microwave oven includes semiconductor microwave generator (1), adds hot cell (2) and be used for changing the microwave that described semiconductor microwave generator (1) produces the antenna (3) that will add in hot cell (2) described in this microwave transmission extremely, it is characterized in that, described antenna (3) includes the mast (31) with helical structure, the feed side of this mast (31) is connected to the power take-off of described semiconductor microwave generator (1), can add transmission microwave in hot cell (2) from the other end to described。
2. microwave oven according to claim 1, it is characterized in that, described antenna (3) also includes the earth plate (32) with described mast (31) setting insulated from each other, and this earth plate (32) is formed with the endoporus for the traverse of microwave transmission path and adds hot cell (2) altogether with described。
3. microwave oven according to claim 2, it is characterised in that described earth plate (32) is connected to shell or the pedestal of described semiconductor microwave generator (1)。
4. microwave oven according to claim 3, it is characterized in that, the outer conductor (41) of the described earth plate (32) radio frequency connector (4) by being arranged in pairs is connected to shell or the pedestal of described semiconductor microwave generator (1), and the feed side of described mast (31) is connected to the power take-off of described semiconductor microwave generator (1) by the inner wire (42) of described radio frequency connector (4)。
5. microwave oven according to claim 2, it is characterized in that, described antenna (3) is connected to described semiconductor microwave generator (1) by the radio frequency connector (4) being arranged in pairs, wherein, it is connected to radio-frequency cable (5) between the described radio frequency connector (4) being arranged in pairs。
6. microwave oven according to claim 2, it is characterized in that, described microwave oven also includes wave guide box (6), this wave guide box (6) adds on the outer wall of hot cell (2) described in being connected to, described earth plate (32) be fitted in this wave guide box (6) away from the described side adding hot cell (2), and make the helical structure of described mast (31) stretch in this wave guide box (6)。
7. microwave oven according to claim 6, it is characterised in that described earth plate (32) has the kink (321) of the outer wall for adding hot cell (2) described in engaging。
8. microwave oven according to claim 1; it is characterized in that; the helical structure of described mast (31) adds in hot cell (2) described in stretching to, and this adds the block piece (7) being provided with on the internal face of hot cell (2) for protecting described mast (31)。
9. microwave oven as claimed in any of claims 1 to 8, it is characterised in that the spiral number of turns of the helical structure of described mast (31) is 2 circle～10 circles, and pitch is 4mm～50mm, and spiral external diameter is 10mm～80mm。
10. microwave oven according to claim 9, it is characterised in that the spiral number of turns of the helical structure of described mast (31) is 2 circle～4 circles, and pitch is 13mm～17mm, and spiral external diameter is 18mm～22mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101594.XU CN205332285U (en) | 2016-02-01 | 2016-02-01 | Microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101594.XU CN205332285U (en) | 2016-02-01 | 2016-02-01 | Microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205332285U true CN205332285U (en) | 2016-06-22 |
Family
ID=56317541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620101594.XU Withdrawn - After Issue CN205332285U (en) | 2016-02-01 | 2016-02-01 | Microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205332285U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509109A (en) * | 2016-02-01 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN106304456A (en) * | 2016-08-29 | 2017-01-04 | 广东美的厨房电器制造有限公司 | Microwave feedthrough and microwave cooking equipment |
| CN109935963A (en) * | 2019-03-07 | 2019-06-25 | 江苏安德信超导加速器科技有限公司 | Magnetron antenna component |
| WO2022058998A1 (en) | 2020-09-15 | 2022-03-24 | Goji Limited | Rf power module with a connectorless rf radiating element |
-
2016
- 2016-02-01 CN CN201620101594.XU patent/CN205332285U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509109A (en) * | 2016-02-01 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN105509109B (en) * | 2016-02-01 | 2018-06-29 | 广东美的厨房电器制造有限公司 | Micro-wave oven |
| CN106304456A (en) * | 2016-08-29 | 2017-01-04 | 广东美的厨房电器制造有限公司 | Microwave feedthrough and microwave cooking equipment |
| CN109935963A (en) * | 2019-03-07 | 2019-06-25 | 江苏安德信超导加速器科技有限公司 | Magnetron antenna component |
| WO2022058998A1 (en) | 2020-09-15 | 2022-03-24 | Goji Limited | Rf power module with a connectorless rf radiating element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20180629 |
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| AV01 | Patent right actively abandoned |