CN204535107U - For gas heater smoke evacuation system and there is its gas heater - Google Patents
For gas heater smoke evacuation system and there is its gas heater Download PDFInfo
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- CN204535107U CN204535107U CN201520202688.1U CN201520202688U CN204535107U CN 204535107 U CN204535107 U CN 204535107U CN 201520202688 U CN201520202688 U CN 201520202688U CN 204535107 U CN204535107 U CN 204535107U
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- noise reduction
- discharge duct
- reduction assembly
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Abstract
The utility model discloses a kind of smoke evacuation system for gas heater and have its gas heater, this smoke evacuation system comprises: for discharging the discharge duct of flue gas; Multiple noise reduction assembly, multiple noise reduction assembly is arranged successively on the circulating direction of flue gas, each noise reduction assembly comprises outer casing and multiple through hole, cover on outside outer casing discharge duct outside and and limit expanding chamber between the periphery wall of discharge duct, the discharge duct that each expanding chamber is corresponding is provided with the multiple through holes running through discharge duct in a thickness direction, and the open-celled structure of the through hole that multiple expanding chamber is corresponding is different; Defroster, defroster comprises body and switch gate, and body is connected with discharge duct or noise reduction assembly, and switch gate to be located on body and often to end body under gravity.According to the smoke evacuation system for gas heater of the present utility model, by adopting multiple noise reduction assembly and defroster to coordinate, gas heater is made to have noise little, the advantages such as anti-freeze.
Description
Technical field
The utility model relates to gas heater apparatus field, particularly relates to a kind of smoke evacuation system for gas heater and has the gas heater of this smoke evacuation system.
Background technology
Gas heater in correlation technique, cold air can enter gas heater inside by smoke exhaust pipe of gas water heater, and can cause the water freezing in water tank when gas heater does not use and cannot use, time serious, freezing and expansion can be split up water tank.
Further, along with improving constantly of living standards of the people, require more and more higher to quality of life, what pursue is not only the continuous increase of using amount of hot water, temperature persistance is stablized, one opens and namely has hot water, simultaneously with water spot number increase etc., require also more and more higher to the noise performance of machine simultaneously, pursue low noise, easy, comfortable living environment, the main noise source of current gas heater is air power noise and combustion noise, wherein combustion noise can reduce single burner load and realizes, and air power noise is inevitable, mainly because current gas heater is forced-ventilated and strong odd test two kinds is main, all need blower fan to drive constantly to suck ozone and will maintain Thorough combustion, just air power noise can be produced, noise all discharges from smoke evacuation system.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model proposes a kind of smoke evacuation system for gas heater, by adopting multiple noise reduction assembly and defroster to coordinate, making gas heater have noise little, the advantages such as anti-freeze.
The utility model also proposed a kind of gas heater with above-mentioned smoke evacuation system.
According to the smoke evacuation system for gas heater of the present utility model, comprising: for discharging the discharge duct of flue gas; Multiple noise reduction assembly, multiple noise reduction assembly is arranged successively on the circulating direction of flue gas, each noise reduction assembly comprises outer casing and multiple through hole, cover on outside outer casing discharge duct outside and and limit expanding chamber between the periphery wall of discharge duct, the discharge duct that each expanding chamber is corresponding is provided with the multiple through holes running through discharge duct in a thickness direction, and the open-celled structure of the through hole that multiple expanding chamber is corresponding is different; Defroster, defroster comprises body and switch gate, and body is connected with discharge duct or noise reduction assembly, and switch gate to be located on body and often to end body under gravity.
According to the smoke evacuation system for gas heater of the present utility model, by adopting multiple noise reduction assembly and defroster to coordinate, gas heater is made to have noise little, the advantages such as anti-freeze.
Particularly, described body comprises: outer tube, and described outer tube is connected with outer casing described in one of them; Interior pipe, a part for described interior pipe is positioned at described outer tube, described switch gate be positioned at described outer tube and one end of described switch gate be located at described pipe rotationally periphery wall on to open or close the end of described pipe.
Further, described outer tube is connected with the outer casing of most upstream in described multiple noise reduction assembly.
Particularly, the outer casing of described multiple noise reduction assembly is connected successively.
Particularly, described discharge duct comprises VERTICAL TUBE, bend pipe and straight tube, the two ends of described bend pipe are connected with described straight tube with described VERTICAL TUBE respectively, and described multiple noise reduction assembly is located in described VERTICAL TUBE, and described body is suitable for directly being connected with the outlet flue on the petticoat pipe of described gas heater.
Alternatively, described body is directly connected with described discharge duct, and described switch gate is located on the inwall of described body rotationally
Particularly, the shape and size of the outer casing of described multiple noise reduction assembly are all identical.
Further, the periphery wall of the exit portion of described smoke discharging pipe is provided with multiple tap hole.
Particularly, the described through hole that described multiple expanding chamber is corresponding is circular hole, and the diameter of the described through hole that described multiple expanding chamber is corresponding is different.
In addition, the utility model also proposed a kind of gas heater, and it comprises the above-mentioned smoke evacuation system for gas heater.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram under the smoke evacuation system duty of the gas heater of the utility model embodiment.
Reference numeral:
Smoke evacuation system 100;
Discharge duct 1; VERTICAL TUBE 11; Bend pipe 12; Straight tube 13; Tap hole 131;
Noise reduction assembly 2; Outer casing 21; Through hole 22; Expanding chamber 23;
Defroster 3; Body 31; Outer tube 311; Interior pipe 312; Switch gate 32.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be 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 ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " 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, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
Describe the smoke evacuation system 100 for gas heater according to the utility model embodiment referring to Fig. 1, this smoke evacuation system 100 is connected for discharging flue gas with the outlet flue on the petticoat pipe of gas heater.
As shown in Figure 1, according to the smoke evacuation system 100 for gas heater of the utility model embodiment, comprising: discharge duct 1, multiple noise reduction assembly 2 and defroster 3.
Particularly, with reference to figure 1, the flue gas produced during gas water heater working is discharged into outdoor by discharge duct 1, like this, by the path of rational designing and arranging feed channel 1, thus can reduce taking up room of discharge duct 1.
Multiple noise reduction assembly 2 is arranged successively on the circulating direction of flue gas.Shown in figure 1, noise reduction assembly 2 can arrange multiple, and the circulating direction of flue gas arranges multiple noise reduction assembly 2, like this, when flue gas is by multiple noise reduction assembly 2, each noise reduction assembly 2 can filter the sound of different frequency respectively, thus reduces the noise of the flue gas of discharging discharge duct 1.
Particularly, each noise reduction assembly 2 comprises outer casing 21 and multiple through hole 22, covers on the outside of discharge duct 1 and and limit expanding chamber 23 between the periphery wall of discharge duct 1 outside outer casing 21.
The discharge duct 1 of each expanding chamber 23 correspondence is provided with the multiple through holes 22 running through discharge duct 1 in a thickness direction, and the open-celled structure of the through hole 22 of multiple expanding chamber 23 correspondence is different.Shown in figure 1, multiple through hole 22 can be arranged on discharge duct 1, and multiple through hole 22 runs through discharge duct 1 in a thickness direction, and each noise reduction assembly 2 has multiple through holes 22 of different structure, that is, each noise reduction assembly 2 can filter out the sound of different frequency.
Specifically, shown in figure 1, each noise reduction assembly 2 with multiple through hole 22 has the intrinsic frequency of oneself, on the circulating direction of flue gas, when the sound wave including various frequency content can be introduced in first noise reduction assembly 2, when flue gas is when multiple through hole 22 of first noise reduction assembly 2, the frequency spectrum of flue gas noise will shift to high frequency or hyperfrequency, simultaneously a part of acoustic energy rubs and changes into thermal energy consumption and fall in the hole of multiple through hole 22, and the flue gas being consumed partial noise enters in first expanding chamber 23.When sound wave enters into first expanding chamber 23, only have with multiple through holes 22 intrinsic frequency of first noise reduction assembly 2 near some sound wave just can enter into second noise reduction assembly 2, the sound wave of other frequency is not then by first noise reduction assembly 2, can only in first expanding chamber 23 roundtrip and being consumed, the like, refiltered the noise of a part of frequency by remaining noise reduction assembly 2, thus reach the object of noise elimination.
In other words, the sound wave part through each noise reduction assembly 2 can converting heat to by friction during multiple through hole 22, the sound that an is filtered part can between the internal perisporium of outer casing 21 and the periphery wall of the discharge duct 1 of correspondence roundtrip cancel themselves.
It can thus be appreciated that, by setting gradually multiple noise reduction assembly 2 on the circulating direction of flue gas, the sound of major part frequency in flue gas can be filtered out, thus reduce gas heater noise operationally.
Further, defroster 3 comprises body 31 and switch gate 32, and body 31 is connected with discharge duct 1 or noise reduction assembly 2, and switch gate 32 to be located on body 31 and often to end body 31 under gravity.
With reference in the example shown in figure 1, one end of body 31 can be connected with the outlet flue (not shown) on the petticoat pipe of gas heater, the other end of body 31 can be connected with noise reduction assembly 2, switch gate 32 is arranged on body 31 rotationally, like this, when gas water heater working, switch gate 32 is opened under the flue gas effect of upwarding pressure, thus make flue gas flow to noise reduction assembly 2 by body 31, flue gas is discharged from the outlet of discharge duct 1 after carrying out noise reduction by multiple noise reduction assembly 2, correspondingly, after gas heater quits work, switch gate 32 can close body 31 under gravity, thus stop the cold air of outside to enter gas heater, and then the water freezing avoided in water tank and cannot continue to use the problem of gas heater.
It is appreciated of course that, body 31 can directly be connected with discharge duct 1, such as body 31 can be a part for discharge duct 1, switch gate 32 can be located on the inwall of body 31 rotationally, during gas water heater working, flue gas flow direction defroster 3 after the noise reduction of multiple noise reduction assembly 2, switch gate 32 is opened body 31 and makes flue gas to flow out flue gas system under the pressure effect of flue gas.After gas heater quits work, switch gate 32 can close body 31 under gravity, thus stops the cold air of outside to enter into gas heater, and then the water freezing avoided in water tank and cannot continue to use the problem of gas heater.
According to the smoke evacuation system 100 for gas heater of the utility model embodiment, by adopting multiple noise reduction assembly 2 and defroster 3 to coordinate, gas heater is made to have noise little, the advantages such as anti-freeze.
In an embodiment of the present utility model, body 31 comprises outer tube 311 and interior pipe 312, and outer tube 311 is connected with one of them outer casing 21.That is, shown in figure 1, outer tube 311 can directly be connected with the outer casing 21 of noise reduction assembly 2, thus can by multiple noise reduction assembly 2 and defroster 3 more efficiently with the use of.
Further, outer tube 311 can be connected with the outer casing 21 of most upstream in multiple noise reduction assembly 2.Shown in figure 1, outer tube 311 can be connected with the outer casing 21 of noise reduction assembly 2 bottom, like this, during gas water heater working, can directly enter noise reduction assembly 2 by the flue gas of outer tube 311, improve the circulation of flue gas, when gas heater quits work, outside cold air needs first could arrive defroster 3 by discharge duct 1 and multiple noise reduction assembly 2, thus adds the stream of cold air, and then can improve the resistance to frost of defroster 3 further.
Particularly, a part for interior pipe 312 is positioned at outer tube 311, switch gate 32 be positioned at outer tube 311 and one end of switch gate 32 be located at pipe 312 rotationally periphery wall on to open or close the end of pipe 312.Shown in figure 1, a part for interior pipe 312 can extend in outer tube 311, one end of switch gate 32 is located on the periphery wall of interior pipe 312, rotationally like this, when gas water heater working, flue gas is by interior pipe 312, under the effect of flue gas upward pressure, open switch gate 32, the circulation area due to interior pipe 312 is less than the circulation area of outer tube 311, when flue gas enters outer tube 311 from interior pipe 312, sound can once expand, thus sound once can be decayed.
In an embodiment of the present utility model, as shown in Figure 1, the outer casing 21 of multiple noise reduction assembly 2 is connected successively.Specifically, shown in figure 1, multiple noise reduction assembly 2 can be connected successively, like this, the outer casing 21 of each noise reduction assembly 2 is also connected successively, thus the outer casing 21 of each noise reduction assembly 2 can be one-body molded, by adopting integrated outer casing 21, effectively can improve the intensity of outer casing 21, increase the service life of noise reduction assembly 2, and facilitate the installation of smoke evacuation system 100.
In an embodiment of the present utility model, discharge duct 1 comprises VERTICAL TUBE 11, bend pipe 12 and straight tube 13, and 12 two ends of bend pipe are connected with straight tube 13 with VERTICAL TUBE 11 respectively.Specifically, shown in figure 1, multiple noise reduction assembly 2 can be located in VERTICAL TUBE 11, in other words, multiple through hole 22 can be formed on the tube wall of VERTICAL TUBE 11, covers in corresponding VERTICAL TUBE 11 outside each outer casing 21, the upper end of one end vertical connecting pipe 11 of bend pipe 12, the other end of bend pipe 12 connects straight tube 13, and such client reasonably can arrange the stream of flue gas according to demand, convenient installation.
Further, body 31 is suitable for directly being connected with the outlet flue (not shown) on the petticoat pipe of gas heater.Shown in figure 1, the lower end of body 31 can directly be connected with the outlet flue on the petticoat pipe of gas heater, the upper end of body 31 is connected with the outer casing 21 of the noise reduction assembly 2 of most upstream, like this, the flue gas of discharging during gas water heater working directly enters body 31, enter multiple noise reduction assembly 2 by body 31 and carry out noise reduction, finally by outside discharge duct 1 discharge chamber.
In an embodiment of the present utility model, body 31 is directly connected with discharge duct 1, and switch gate 32 is located on the inwall of body 31 rotationally.Specifically, the two ends of body 31 can directly be connected with discharge duct 1, thus switch gate 32 be located at body 31 rotationally inwall on the stream of flue gas is controlled, preferably, the circulation area of body 31 can be identical with the circulation area of discharge duct 1, and that is, body 31 and discharge duct 1 are formed in one structure, like this, production and the installation of gas heater is facilitated.
In an embodiment of the present utility model, the shape and size of the outer casing 21 of multiple noise reduction assembly 2 are all identical.Shown in figure 1, the shape and size of the outer casing 21 of each noise reduction assembly 2 can construct identical, like this, can reduce the production stage of the outer casing 21 of different noise reduction assembly 2, thus improve the production efficiency of the smoke evacuation system 100 of gas heater, and are convenient to install.
In an embodiment of the present utility model, the periphery wall of the exit portion of discharge duct 1 is provided with multiple tap hole 131.That is, shown in figure 1, tap hole 131 can be arranged on the periphery wall of the exit portion of discharge duct 1, and like this, the pressure that the exit portion that effectively can reduce discharge duct 1 is brought by flue gas, increases the service life of discharge duct 1.
In an embodiment of the present utility model, the through hole 22 of multiple expanding chamber 23 correspondence is circular hole, and the diameter of the through hole 22 of multiple expanding chamber 23 correspondence is different.Shown in figure 1, noise reduction assembly 2 can be three, similarly, expanding chamber 23 is also three, multiple through holes 22 of each expanding chamber 23 correspondence all can be configured to circular hole, like this, can improve the production efficiency of through hole 22, simultaneously, multiple through holes 22 of each expanding chamber 23 correspondence construct difference, and in other words, the diameter of multiple through holes 22 of each expanding chamber 23 correspondence is different, thus can filter the sound of different frequency, and then the noise of flue gas can be discharged during reduction gas water heater working effectively.
Certain the utility model is not limited thereto, and multiple through hole 22 also can be configured to other structures, and such as, multiple through hole 22 also can be configured to rhombus, square or rectangle, also can be the mixing composition of several different structure, to meet different actual demands.
In addition, the utility model also proposed a kind of gas heater, and it comprises the above-mentioned smoke evacuation system 100 for gas heater.
Below with reference to Fig. 1, smoke evacuation system 100 operation principle for gas heater according to the utility model specific embodiment is described.
With reference to figure 1, when gas water heater working, defroster 3 is opened by the gravity that flue gas overcomes switch gate 32 under blower fan (not shown) provides the effect of power, flue gas enters multiple noise reduction assembly 2 subsequently, air pressure expansion is discharged a part of pressure through each expanding chamber 23 by flue gas, due to multiple through holes 22 of each expanding chamber 23 correspondence open-celled structure and arrange different, thus upset the original sound frequency of flue gas, filter out the noise of major part frequency, the all directions of sound in expanding chamber 23 of various frequency are launched, the noise of major part of then cancelling out each other frequency flows out from discharge duct 1 again, and when flue gas is through multiple through hole 22, the frequency spectrum of noise will shift to high frequency or hyperfrequency, part acoustic energy rubs and changes into thermal energy consumption and dissipate in the hole of multiple through hole 22, make to be weakened by the sound wave of multiple noise reduction assembly 2, audible sound composition in frequency spectrum obviously reduces, thus the interference reduced people and injury, when gas heater quits work, switch gate 32 can close under gravity closes interior pipe 312, like this, outside cold air just cannot enter gas heater by discharge duct 1, thus avoids the water in water tank to freeze and cause continuing the problem of use.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate 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, revises, replace and modification in scope of the present utility model.
Claims (10)
1. for a smoke evacuation system for gas heater, it is characterized in that, comprising:
For discharging the discharge duct of flue gas;
Multiple noise reduction assembly, described multiple noise reduction assembly is arranged successively on the circulating direction of flue gas, each described noise reduction assembly comprises outer casing and multiple through hole, cover on outside described outer casing described discharge duct outside and and limit expanding chamber between the periphery wall of described discharge duct, the discharge duct that each described expanding chamber is corresponding is provided with the described multiple through hole running through described discharge duct in a thickness direction, and the open-celled structure of the described through hole that described multiple expanding chamber is corresponding is different;
Defroster, described defroster comprises body and switch gate, and described body is connected with described discharge duct or described noise reduction assembly, and described switch gate to be located on described body and the described body of normal cut-off under gravity.
2. the smoke evacuation system of gas heater according to claim 1, is characterized in that, described body comprises:
Outer tube, described outer tube is connected with outer casing described in one of them;
Interior pipe, a part for described interior pipe is positioned at described outer tube, described switch gate be positioned at described outer tube and one end of described switch gate be located at described pipe rotationally periphery wall on to open or close the end of described pipe.
3. the smoke evacuation system of gas heater according to claim 2, is characterized in that, described outer tube is connected with the outer casing of most upstream in described multiple noise reduction assembly.
4. the smoke evacuation system of gas heater according to claim 1, is characterized in that, the outer casing of described multiple noise reduction assembly is connected successively.
5. the smoke evacuation system of gas heater according to claim 1, it is characterized in that, described discharge duct comprises VERTICAL TUBE, bend pipe and straight tube, the two ends of described bend pipe are connected with described straight tube with described VERTICAL TUBE respectively, described multiple noise reduction assembly is located in described VERTICAL TUBE, and described body is suitable for directly being connected with the outlet flue on the petticoat pipe of described gas heater.
6. the smoke evacuation system of gas heater according to claim 1, is characterized in that, described body is directly connected with described discharge duct, and described switch gate is located on the inwall of described body rotationally.
7. the smoke evacuation system of gas heater according to claim 1, is characterized in that, the shape and size of the outer casing of described multiple noise reduction assembly are all identical.
8. the smoke evacuation system of gas heater according to claim 1, is characterized in that, the periphery wall of the exit portion of described discharge duct is provided with multiple tap hole.
9. the smoke evacuation system of gas heater according to claim 1, is characterized in that, the described through hole that described multiple expanding chamber is corresponding is circular hole, and the diameter of the described through hole that described multiple expanding chamber is corresponding is different.
10. a gas heater, is characterized in that, comprises the smoke evacuation system for gas heater according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202688.1U CN204535107U (en) | 2015-04-03 | 2015-04-03 | For gas heater smoke evacuation system and there is its gas heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202688.1U CN204535107U (en) | 2015-04-03 | 2015-04-03 | For gas heater smoke evacuation system and there is its gas heater |
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| CN204535107U true CN204535107U (en) | 2015-08-05 |
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| CN201520202688.1U Active CN204535107U (en) | 2015-04-03 | 2015-04-03 | For gas heater smoke evacuation system and there is its gas heater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757099A (en) * | 2018-07-16 | 2018-11-06 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of engine breather pipe structure |
| CN108954829A (en) * | 2018-04-24 | 2018-12-07 | 江苏理工学院 | One kind being used for gas heater exhaust pipe nozzle vapor drain means |
| CN110895043A (en) * | 2019-11-25 | 2020-03-20 | 华帝股份有限公司 | Smoke collecting hood with heating device and gas water heater using same |
| CN114992859A (en) * | 2022-04-27 | 2022-09-02 | 芜湖美的厨卫电器制造有限公司 | Gas heater and device of making an uproar and gas heater fall |
-
2015
- 2015-04-03 CN CN201520202688.1U patent/CN204535107U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954829A (en) * | 2018-04-24 | 2018-12-07 | 江苏理工学院 | One kind being used for gas heater exhaust pipe nozzle vapor drain means |
| CN108954829B (en) * | 2018-04-24 | 2020-05-05 | 江苏理工学院 | Steam drainage device for exhaust pipe orifice of gas water heater |
| CN108757099A (en) * | 2018-07-16 | 2018-11-06 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of engine breather pipe structure |
| CN110895043A (en) * | 2019-11-25 | 2020-03-20 | 华帝股份有限公司 | Smoke collecting hood with heating device and gas water heater using same |
| CN114992859A (en) * | 2022-04-27 | 2022-09-02 | 芜湖美的厨卫电器制造有限公司 | Gas heater and device of making an uproar and gas heater fall |
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Effective date of registration: 20221222 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: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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| TR01 | Transfer of patent right |