CN204520344U - For coffee machine liquid-supplying system and there is its coffee machine - Google Patents
For coffee machine liquid-supplying system and there is its coffee machine Download PDFInfo
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- CN204520344U CN204520344U CN201520189637.XU CN201520189637U CN204520344U CN 204520344 U CN204520344 U CN 204520344U CN 201520189637 U CN201520189637 U CN 201520189637U CN 204520344 U CN204520344 U CN 204520344U
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Abstract
The utility model discloses a kind of liquid-supplying system for coffee machine and there is its coffee machine, the described liquid-supplying system for coffee machine comprises: liquid case, heater, check valve and switch, described liquid case is formed with inlet and liquid outlet, on the top that described inlet is formed in described liquid case or sidewall, on the bottom that described liquid outlet is formed in described liquid case or sidewall; Described heater is located on described liquid case to heat the liquid in described liquid case; Described check valve is located at described inlet place, and described check valve is configured to uniaxially and is passed into by the liquid of outside in described liquid case; Described switch is located at described liquid outlet place.According to the liquid-supplying system for coffee machine of the present utility model, by arranging check valve at the inlet place of liquid case and arranging switch at liquid outlet place, thus without the need to arranging water pump or air pump, the liquid after heating just can extrude by the pressure utilizing air heats expansion to produce, and save cost.
Description
Technical field
The utility model relates to coffee machine manufacturing technology field, especially relates to a kind of liquid-supplying system for coffee machine and has its coffee machine.
Background technology
Point out in correlation technique, coffee machine generally adopts water pump or air pump to supply water, and coffee machine has residual after finishing coffee, thus there will be a coffee phenomenon.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, an object of the present utility model is to propose a kind of liquid-supplying system for coffee machine, and the cost of described liquid-supplying system is low.
Another object of the present utility model is to propose a kind of coffee machine with above-mentioned liquid-supplying system.
According to the liquid-supplying system for coffee machine of the utility model first aspect, comprise: liquid case, described liquid case is formed with inlet and liquid outlet, on the top that described inlet is formed in described liquid case or sidewall, on the bottom that described liquid outlet is formed in described liquid case or sidewall; Heater, described heater is located on described liquid case to heat the liquid in described liquid case; Check valve, described check valve is located at described inlet place, and described check valve is configured to uniaxially and is passed into by the liquid of outside in described liquid case; And switch, described switch is located at described liquid outlet place.
According to the liquid-supplying system for coffee machine of the present utility model, by arranging check valve at the inlet place of liquid case and arranging switch at liquid outlet place, thus without the need to arranging water pump or air pump, the liquid after heating just can extrude by the pressure utilizing air heats expansion to produce, and save cost.
Further, described liquid outlet place is provided with liquid feeding pipeline, and wherein said switch is located on described liquid feeding pipeline.
Further, described liquid-supplying system comprises further: safety valve, and described safety valve to be located on described liquid feeding pipeline and between described liquid outlet and described switch.
Particularly, described check valve comprises valve block and valve rod, and described valve block is connected to one end stretched in described liquid case of described valve rod, and described valve rod is located at described inlet place movably.
Further, described liquid case is provided with liquid level sensor, and one end of described liquid level sensor is stretched in described liquid case and the diapire of contiguous described liquid case is arranged.
Further, described liquid case is provided with temperature sensor.
Alternatively, described heater comprises heating tube, and described heating tube is located at the bottom of described liquid case.
Alternatively, described switch is magnetic valve.
According to the coffee machine of the utility model second aspect, comprise the liquid-supplying system for coffee machine according to the above-mentioned first aspect of the utility model.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram for the liquid-supplying system of coffee machine and the brewing cavity of coffee machine according to the utility model embodiment.
Reference numeral:
1: liquid case; 11: inlet; 12: liquid outlet; 121: liquid feeding pipeline;
2: heater; 3: check valve;
31: valve block; 32: valve rod; 33: bonnet;
4: switch; 5: safety valve; 6: liquid level sensor; 7: temperature sensor;
8: liquid supply box; 9: brewing cavity.
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, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " 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, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Below with reference to Fig. 1, the liquid-supplying system for coffee machine (scheming not shown) according to the utility model embodiment is described.
As shown in Figure 1, according to the liquid-supplying system for coffee machine of the utility model first aspect embodiment, comprise liquid case 1, heater 2, check valve 3 and switch 4.
Liquid case 1 is formed with inlet 11 and liquid outlet 12.Wherein, liquid case 1 can be formed as rectangular shape or cylindrical shape substantially, but is not limited thereto, and such as, liquid case 1 can also be formed as Elliptic Cylinder shape or prism shape etc.
With reference to Fig. 1, inlet 11 is formed in the top of liquid case 1, inlet 11 can run through the roof of liquid case 1 along the vertical direction, outside liquid such as water or milk etc. can flow in liquid feeding tank 1 by inlet 11, liquid outlet 12 is formed in the bottom of liquid case 1, liquid outlet 12 can run through the diapire of liquid case 1 along the vertical direction, and liquid such as water or milk etc. in liquid case 1 after heating can flow out from liquid outlet 12.Certainly, inlet 11 and liquid outlet 12 can also be formed on the sidewall of liquid case 1 and (scheme not shown).Be appreciated that inlet 11 and the concrete setting position of liquid outlet 12 on liquid case 1 etc. can according to actual requirement adaptive change, the utility model does not do concrete restriction to this.
Further, liquid-supplying system can also comprise liquid supply box 8, and such as, as shown in Figure 1, liquid supply box 8 is located at the top of liquid case 1, and liquid supply box 8 is connected with the inlet 11 of liquid case 1 with such as water or milk etc. for liquid in liquid case 1.
Heater 2 is located on liquid case 1 to heat the liquid in liquid case 1.Such as, as shown in Figure 1, heater 2 comprises heating tube, and heating tube is located at the bottom of liquid case 1, and heating tube is positioned at outside liquid case 1, thus, easy for installation, and cost is low.Certainly, heater 2 can also be located on the lateral wall of liquid case 1, to improve the efficiency of heating surface.Or heater 2 also can be arranged in liquid case 1.Be appreciated that the particular type of heater 2 and the arrangement on liquid case 1 etc. can according to actual requirement adaptive change, the utility model does not make particular determination to this.
Alternatively, heater 2 can be the heater 2 of power adjustable.Such as, in the whole process that liquid in heater 2 pairs of liquid casees 1 heats, time initial, can heater 2 be adjusted to high-power, to improve the efficiency of heating surface, after the heating the phase (such as when the temperature of the liquid in liquid case 1 reaches 86 DEG C), the power of heater 2 can be turned down, the temperature of liquid is made to be no more than 96 DEG C, to ensure the mouthfeel of the coffee made.
Check valve 3 is located at inlet 11 place, and check valve 3 is configured to uniaxially and is passed in liquid case 1 by the liquid of outside.Now outside fluid can be entered in liquid case 1 by inlet 11, and the fluid in liquid case 1 does not flow to outside liquid case 1 by inlet 11.Wherein, " fluid " can be understood as and comprise liquids and gases, and liquid can be water or milk etc., and gas can be air etc.Such as, when supplying water in liquid case 1, inlet 11 is opened, and the water in liquid supply box 8 can flow in liquid feeding tank 1 by inlet 11, and the air now in liquid case 1 also can be discharged by inlet 11, thus ensures that water can successfully flow in liquid feeding tank 1 from inlet 11; When stopping supplying water in liquid case 1, inlet 11 closed by check valve 3, thus the water and air in liquid case 1 all can not flow out from inlet 11.
Switch 4 is located at liquid outlet 12 place.Thus, by arranging switch 4 at liquid outlet 12 place, in the process that heater 2 such as heating tube heats the such as water of the liquid in liquid case 1, switch 4 is cut out, inlet 11 place can not leak gas owing to being provided with check valve 3, now liquid case 1 inside is an airtight space, along with the rising gradually of temperature in liquid case 1, air heats in liquid case 1 expands and produces pressure, when the such as water of the liquid in water tank be heated to temperature predetermined threshold such as 86 DEG C time, switch 4 is opened, hot water can extrude by the pressure in liquid case 1, flow to the brewing cavity 9 of coffee machine to make coffee.
Alternatively, switch 4 is magnetic valve.Certainly, switch 4 can also be that the fire hose is first-class.
According to the liquid-supplying system for coffee machine of the utility model embodiment, by arranging check valve 3 at inlet 11 place of liquid case 1 and arranging switch 4 at liquid outlet 12 place, thus without the need to arranging water pump or air pump, liquid after heating just can extrude by the pressure utilizing air heats expansion to produce, and save cost.
In addition, due to liquid outlet 12, place is provided with switch 4, and when liquid-supplying system is applied in coffee machine, switch 4 cuts out after flowing out by the liquid in liquid case 1, and coffee machine does not have residual after finishing coffee, thus there will not be the phenomenon of dripping coffee.
According to an embodiment of the present utility model, liquid outlet 12 place is provided with liquid feeding pipeline 121, and its breaker in middle 4 is located on liquid feeding pipeline 121.Specifically, as shown in Figure 1, one end of liquid feeding pipeline 121 (such as, lower end in Fig. 1) be connected with liquid outlet 12, the other end of liquid feeding pipeline 121 (such as, upper end in Fig. 1) be connected with brewing cavity 9, switch 4 such as magnetic valve is arranged on liquid feeding pipeline 121, thus, after liquid such as water etc. in heater 2 pairs of liquid casees 1 has heated, open switch 4 such as magnetic valve, liquid in liquid case 1 such as water etc. can in liquid case 1 air pressure of expanded by heating effect under be pressed into brewing cavity 9 by liquid feeding pipeline 121, thus mix to make coffee with the ground coffee etc. in brewing cavity 9.
Further, with reference to Fig. 1, liquid-supplying system comprises further: safety valve 5, safety valve 5 is located on liquid feeding pipeline 121, and safety valve 5 is between liquid outlet 12 and switch 4, now safety valve 5 is positioned at the upstream of switch 4 such as magnetic valve, when the pressure in liquid case 1 is excessive, portion gas in liquid case 1 such as air can be discharged by safety valve 5, to play the effect of pressure release.Here, it should be noted that, " upstream " can be understood as the upstream of the flow direction of liquid in liquid feeding pipeline 121.Thus, by arranging safety valve 5, can prevent liquid case 1 inside from occurring the phenomenon that pressure is excessive, ensure that the normal of liquid-supplying system and safe handling.
According to a specific embodiment of the present utility model, as shown in Figure 1, check valve 3 comprises valve block 31 and valve rod 32, valve block 31 extends in the horizontal direction, what valve block 31 was connected to valve rod 32 stretches one end in liquid feeding tank 1 (such as, lower end in Fig. 1), valve rod 32 is located at inlet 11 place movably, valve rod 32 be positioned at one end outside liquid case 1 (such as, upper end in Fig. 1) be provided with bonnet 33, the lateral dimension that the lateral dimension of bonnet 33 is greater than valve rod 32 comes off from inlet 11 to prevent check valve 3.Wherein, inlet 11 can comprise multiple inlet opening, and multiple inlet opening can be arranged along the circumferential interval of valve rod 32, and the ultimate range between the inwall of each inlet opening and the center of valve rod 32 is less than the distance between the edge of valve block 31 and the center of valve rod 32.
Thus, when in liquid case 1 for liquid time, outside liquid such as water etc. can promote check valve 3 and move down, and make valve block 31 open inlet 11, thus the liquid of outside such as water etc. can enter in liquid case 1 by inlet 11; After water supply completes, check valve 3 moves up, and makes valve block 31 close inlet 11.Such as, can back-moving spring (scheming not shown) be set in the upper end of valve rod 32, to make check valve 3 can self-closed inlet 11.When the liquid in heater 2 pairs of liquid casees 1 heats, the pressure that air heats expansion produces can make valve block 31 upwards compress inlet 11 further, thus good sealing effect.
Liquid case 1 is provided with liquid level sensor 6, liquid level sensor 6 is for detecting the liquid level of the liquid in liquid case 1, specifically, with reference to Fig. 1, one end of liquid level sensor 6 (such as, lower end in Fig. 1) stretch in liquid feeding tank 1, and the diapire of the contiguous liquid case 1 in above-mentioned one end of liquid level sensor 6 is arranged, now above-mentioned one end of liquid level sensor 6 and the diapire of liquid case 1 are discontiguous.Thus, when the liquid level in liquid case 1 drops to liquid level predetermined threshold, heater 2 quits work, and now utilizes the waste heat of heater 2 to be extruded by liquid remaining in liquid case 1, can prevent heater 2 from occurring the phenomenon of dry combustion method like this, extend the service life of heater 2.Be appreciated that distance between above-mentioned one end of liquid level sensor 6 and the diapire of liquid case 1 can according to the different of the type of coffee machine adaptive change, the utility model does not do concrete restriction to this.
As shown in Figure 1, liquid case 1 is provided with temperature sensor 7, and temperature sensor 7 is located at the bottom of liquid case 1, and one end (such as, the left end in Fig. 1) of temperature sensor 7 is stretched in liquid feeding tank 1, to detect the temperature of the liquid in liquid case 1.Wherein, temperature sensor 7 can be NTC (Negative Temperature Coefficient, negative temperature coefficient) temperature sensor 7, but is not limited thereto.
When the coffee maker is operated, first add in liquid feeding tank 1 by a certain amount of water by inlet 11, in the process of adding water, air can be discharged by inlet 11, ensures that water can successfully add from inlet 11.Then start heater 2 to heat the liquid in liquid case 1, at heating process breaker in middle 4 such as closed electromagnetic valve, check valve 3 can not leak gas, and ensures that liquid case 1 is airtight.When the temperature of the liquid that temperature sensor 7 detects in liquid case 1 reaches temperature (such as 86 DEG C) that are applicable to cooking coffee, switch 4 such as magnetic valve is opened, the pressure that in liquid case 1, air heats expansion produces is utilized to be extruded by hot water, start to cook coffee, now heater 2 such as heating tube adopts lower-wattage heating, to make water temperature be no more than 96 DEG C, but can the temperature of air in constant raising liquid case 1, ensure the pressure needed for water outlet.When the underwater in liquid case 1 drops to liquid level predetermined threshold, heater 2 quits work, and the time that switch 4 such as magnetic valve postpones setting closes, complete to ensure the hot water stream in liquid case 1, cooks coffee and completes.Now brewing cavity 9 does not have stream of liquid droplets and goes out.
According to the coffee machine of the utility model second aspect embodiment, comprise the liquid-supplying system for coffee machine according to the above-mentioned first aspect embodiment of the utility model.
According to the coffee machine of the utility model embodiment other form and operation be all known to those skilled in the art, be not described in detail here.
According to the control procedure of the liquid-supplying system for coffee machine of the utility model embodiment.Liquid-supplying system comprises and has inlet 11 and the liquid case 1 of liquid outlet 12, the heater 2 be located on liquid case 1, the check valve 3 being located at inlet 11 place, the switch 4 being located at liquid outlet 12 place, controller (scheming not shown) and the liquid level sensor 6 be connected with controller and temperature sensor 7, the liquid of outside is passed in liquid case 1 for uniaxially by check valve 3, and heater 2 is connected with controller.Here, it should be noted that, be all described in detail in liquid case 1, heater 2, check valve 3, switch 4, liquid level sensor 6 and the description of temperature sensor 7 on the application, do not repeat them here.
Wherein, the control procedure of liquid-supplying system comprises the following steps:
S1, temperature sensor 7 detect the temperature of the liquid in liquid case 1;
S2, temperature sensor 7 send the temperature signal detected to controller, and controller judges whether temperature signal reaches temperature predetermined threshold;
S3, when the judged result in step S2 is for being, gauge tap 4 is opened;
S4, when the judged result in step S2 is no, return step S1 continue detect;
S5, liquid level sensor 6 detect the liquid level of the liquid in liquid case 1;
S6, liquid level sensor 6 send the liquid level signal detected to controller, and controller judges whether liquid level signal is down to liquid level predetermined threshold;
S7, when the judged result in step S6 is for being, control heater 2 quit work;
S8, when the judged result in step S6 is no, return step S5 continue detect;
S9, gauge tap 4 late release.
Such as, a certain amount of water is added in liquid feeding tank 1 by inlet 11.Then start heater 2, at heating process breaker in middle 4 such as closed electromagnetic valve, check valve 3 can not leak gas, and ensures that liquid case 1 is airtight.Temperature sensor 7 can detect the temperature of the water in liquid case 1 in real time, when temperature sensor 7 detect the temperature of liquid reach temperature predetermined threshold be such as applicable to doing temperature (such as 86 DEG C) of coffee time, temperature sensor 7 sends the temperature signal detected to controller, controller judges that temperature signal reaches temperature predetermined threshold, controller gauge tap 4 such as magnetic valve is opened, otherwise switch 4 keeps closed condition, switch 4 is after such as magnetic valve is opened, hot water extrudes by the pressure that in liquid case 1, air heats expansion produces, now liquid level sensor 6 can detect the liquid level of the liquid in liquid case 1 in real time, when the underwater in liquid case 1 drops to liquid level predetermined threshold, liquid level sensor 6 sends the liquid level signal detected to controller, controller judges that liquid level signal is down to liquid level predetermined threshold, controller controls heater 2 and quits work, and switch 4 such as magnetic valve postpones regular hour cut out, complete to ensure the hot water stream in liquid case 1, cook coffee to complete.
Alternatively, temperature predetermined threshold is 86 DEG C-96 DEG C.Its concrete numerical value can according to different types of coffee adaptive change, the utility model does not do concrete restriction to this.
According to the control procedure of the liquid-supplying system for coffee machine of the utility model embodiment, the mouthfeel of the coffee produced is good.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " 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, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (9)
1. for a liquid-supplying system for coffee machine, it is characterized in that, comprising:
Liquid case, described liquid case is formed with inlet and liquid outlet, on the top that described inlet is formed in described liquid case or sidewall, on the bottom that described liquid outlet is formed in described liquid case or sidewall;
Heater, described heater is located on described liquid case to heat the liquid in described liquid case;
Check valve, described check valve is located at described inlet place, and described check valve is configured to uniaxially and is passed into by the liquid of outside in described liquid case; And
Switch, described switch is located at described liquid outlet place.
2. the liquid-supplying system for coffee machine according to claim 1, is characterized in that, described liquid outlet place is provided with liquid feeding pipeline, and wherein said switch is located on described liquid feeding pipeline.
3. the liquid-supplying system for coffee machine according to claim 2, is characterized in that, comprise further:
Safety valve, described safety valve to be located on described liquid feeding pipeline and between described liquid outlet and described switch.
4. the liquid-supplying system for coffee machine according to claim 1, is characterized in that, described check valve comprises valve block and valve rod, and described valve block is connected to one end stretched in described liquid case of described valve rod, and described valve rod is located at described inlet place movably.
5. the liquid-supplying system for coffee machine according to claim 1, is characterized in that, described liquid case is provided with liquid level sensor, and one end of described liquid level sensor is stretched in described liquid case and the diapire of contiguous described liquid case is arranged.
6. the liquid-supplying system for coffee machine according to claim 1, is characterized in that, described liquid case is provided with temperature sensor.
7. the liquid-supplying system for coffee machine according to claim 1, is characterized in that, described heater comprises heating tube, and described heating tube is located at the bottom of described liquid case.
8. the liquid-supplying system for coffee machine according to any one of claim 1-7, is characterized in that, described switch is magnetic valve.
9. a coffee machine, is characterized in that, comprises the liquid-supplying system for coffee machine according to any one of claim 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189637.XU CN204520344U (en) | 2015-03-30 | 2015-03-30 | For coffee machine liquid-supplying system and there is its coffee machine |
| PCT/CN2015/088119 WO2016155216A1 (en) | 2015-03-30 | 2015-08-26 | Liquid supply system for coffee machine and control method thereof, coffee machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189637.XU CN204520344U (en) | 2015-03-30 | 2015-03-30 | For coffee machine liquid-supplying system and there is its coffee machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204520344U true CN204520344U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520189637.XU Expired - Fee Related CN204520344U (en) | 2015-03-30 | 2015-03-30 | For coffee machine liquid-supplying system and there is its coffee machine |
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| Country | Link |
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| CN (1) | CN204520344U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155216A1 (en) * | 2015-03-30 | 2016-10-06 | 广东美的生活电器制造有限公司 | Liquid supply system for coffee machine and control method thereof, coffee machine |
| CN106343893A (en) * | 2016-11-11 | 2017-01-25 | 长兴天华电器有限公司 | Wine warming device and wine warming method thereof |
| WO2017161680A1 (en) * | 2016-03-21 | 2017-09-28 | 广东美的生活电器制造有限公司 | Method for controlling drink machine |
| CN107752768A (en) * | 2016-08-15 | 2018-03-06 | 广东德豪润达电气股份有限公司 | Coffee machine and its method of work |
-
2015
- 2015-03-30 CN CN201520189637.XU patent/CN204520344U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155216A1 (en) * | 2015-03-30 | 2016-10-06 | 广东美的生活电器制造有限公司 | Liquid supply system for coffee machine and control method thereof, coffee machine |
| WO2017161680A1 (en) * | 2016-03-21 | 2017-09-28 | 广东美的生活电器制造有限公司 | Method for controlling drink machine |
| CN107752768A (en) * | 2016-08-15 | 2018-03-06 | 广东德豪润达电气股份有限公司 | Coffee machine and its method of work |
| CN107752768B (en) * | 2016-08-15 | 2023-09-26 | 珠海横琴鑫润智能制造有限公司 | Coffee machine and working method thereof |
| CN106343893A (en) * | 2016-11-11 | 2017-01-25 | 长兴天华电器有限公司 | Wine warming device and wine warming method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |