A kind of coffee machine that steam is provided
Technical field
The present invention relates to a kind of coffee machine, particularly a kind of coffee machine that steam is provided.
Background technology
Coffee machine commonly used mainly comprises water tank, water heater and coffee pressing device, and when coffee making, to water heater, heated water enters in the coffee pressing device and prepares coffee the high pressure of the original generation of water pump 15bar again with the water pump in the water tank; Some coffee machine also has steam unit, can utilize steam to come to make foam as required to the fresh milk that reconstitutes, make the coffee mouthfeel that reconstitutes better, and preparation steam carries out under lower pressure, the pressure that is fit to generally is about 2bar, therefore, in coffee machine, need to be provided with one and overlap independently steam raising plant, when needs use steam, water is injected steam generator from water tank heat, thereby make water be heated to boiling and produce steam,, need the bigger electrothermal tube of allocating power in the steam generator for the water that makes normal temperature seethes with excitement as early as possible, in addition, in producing steam course,, satisfy the demands for the quantity of steam that produces in the unit interval is big; Therefore, the volume of the steam generator of existing coffee machine is generally bigger, caused many-sided weak point: 1, because preparation hot water and preparation steam are two to overlap independently system, the electrothermal tube power summation of two cover systems is bigger, the device start load is big, using energy source is unreasonable, has potential safety hazard simultaneously easily; 2, because power is big, volume is big, also must cause the cost of product to rise, as making the materials of steam generator, the cost of materials such as the power line that matches with it, tubing all will increase; 3, product is bulky, is difficult to obtain liking of people.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of rational in infrastructure, heat utilization efficiency is high, start the coffee machine that load is low, volume is little, production cost is low.
The technical solution adopted in the present invention is:
A kind of coffee machine that steam is provided, it comprises water tank, water heater, coffee pressing device and steam generator, water heater and steam generator are respectively equipped with electrothermal tube, pipeline between described water outlet of water tank and the water heater water inlet is provided with the water pump that can regulate pressure of supply water, described water heater is provided with first delivery port and second delivery port, hot water in the water heater flows to coffee pressing device and steam generator by first delivery port and second delivery port respectively, the first delivery port exterior line is provided with first magnetic valve, and the second delivery port exterior line is provided with second magnetic valve.
Further improvement of the present invention, described water pump are the electromagnetic pumps by IC system control.
The invention has the beneficial effects as follows: water heater is provided with two delivery ports, when preparation during coffee, starts water pump, the water of water tank is delivered in the water heater be heated, and the water after the heating flows to the coffee pressing device from first delivery port under high pressure conditions; When after having prepared coffee, needing to use the steam milk making, then water pump is transferred to the low pressure gear, earlier in water heater, be fed to steam generator from second delivery port again after preheated from the water in the water tank, hot water further is heated to boiling at steam generator and produces steam, the design has adopted two-stage to add thermal design when preparation steam, under the prerequisite of the steam production amount of guarantor unit in the time, the electrothermal tube power that is disposed in the level steam generator of back is significantly smaller than traditional stand-alone system, make the startup load of this product little, safe, energy utilization rate is reasonable simultaneously; Simultaneously because power is less, the selected during fabrication container dimensional of product, accessory model etc. are all corresponding less, not only save material, make the volume of product reduce, and effectively reduce manufacturing cost simultaneously, have improved the competitiveness of product in market; Further, described water pump is by the electromagnetic pump of SCM system control, makes the more convenient and hommization of control of system, simple in structure with seasonal product, and good airproof performance, running is reliable.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the cut-away view of coffee machine;
Fig. 3 is another angle schematic diagram of coffee machine internal structure;
Fig. 4 is a coffee machine internal structure decomposing schematic representation;
Fig. 5 is the systematic schematic diagram of coffee machine.
The specific embodiment
Referring to figs. 1 through shown in Figure 5, a kind of coffee machine that steam is provided, it comprises water tank 1, water heater 2, coffee pressing device 3 and steam generator 4, water heater 2 and steam generator 4 are respectively equipped with electrothermal tube 21,41, pipeline between described water tank 1 delivery port and water heater 2 water inlets is provided with the water pump 5 that can regulate pressure of supply water, described water heater 2 is provided with first delivery port 22 and second delivery port 23, hot water in the water heater 2 flows to coffee pressing device 3 and steam generator 4 by first delivery port 22 and second delivery port 23 respectively, first delivery port, 22 exterior lines are provided with first magnetic valve, 6, the second delivery ports, 23 exterior lines and are provided with second magnetic valve 7.
When preparation during coffee, water pump to be opened, water pump produces the high pressure of about 15bar, the water of water tank is delivered to water heater is heated near boiling, opens first magnetic valve 6, makes hot water flow to pressing device 3 from first delivery port 22, the A flow direction as shown in Figure 5; When after having prepared coffee, needing to use the steam milk making, then water pump is transferred to the low pressure gear, earlier in water heater 2, be fed to steam generator from second delivery port 23 again after preheated from the water in the water tank 1, hot water further is heated to boiling at steam generator 4 and produces steam, steam is from blast pipe 42 outputs, and B as shown in Figure 5 flows to.The design has adopted two-stage to add thermal design when preparation steam, under the prerequisite of the steam production amount of guarantor unit in the time, the electrothermal tube power that is disposed in the level steam generator of back is significantly smaller than traditional stand-alone system, make the startup load of this product little, safe, in addition, when making steam, can also well utilize the waste heat of prime water heater, energy utilization rate is reasonable, makes at back one-level when heating less energy consumption not only, rate of gasification height, also accelerated the boiling speed of water, dwindle the time interval between preparation coffee and the processing fresh milk foam, made coffee keep certain temperature, concocted out one cup of sapid coffee beverage rapidly; Simultaneously because power is less, the selected during fabrication container dimensional of product, accessory model etc. are all corresponding less, not only save material, make the volume of product reduce, and effectively reduce manufacturing cost simultaneously, have improved the competitiveness of product in market.
In order to make more reasonable structure, the pressing device 3 of this product is arranged at the bottom of water heater 2, therefore, hot water pipeline between first magnetic valve 6 and the pressing device has part to pass from water heater, opening 24 as shown in Figure 4 is connected with the inlet 31 of pressing device 3 by internal duct, makes the structure of product compact more.When preparation coffee, hot water comes out after first magnetic valve 6 enters in the pressing device 3 through supply channel again from first delivery port 22.
Further optimal way, described water pump 5 is by the electromagnetic pump of SCM system control, makes the more convenient and hommization of control of system, simple in structure with seasonal product, good airproof performance, running is reliable; In addition, also can adopt other control mode.
Further, described first, second magnetic valve 6,7 respectively is provided with discharge outlet 61,71, after coffee machine is being made coffee, be prepared steam before, because reduce the hydraulic pressure in the pipeline, therefore, can utilize discharge outlet 61,71 that the water in the pipeline is discharged, so that adjust to required pressure faster.Certainly, utilize the delivery port at the pressing device of coffee machine place own or steam pipe to come water vent to achieve the goal, just utilize three-way magnetic valve to come its more reasonable structure of design of draining, use more convenient.
The above is the preferred embodiment of the present invention, and it does not constitute limiting the scope of the invention, so long as realize that with essentially identical means purpose of the present invention all should belong to protection scope of the present invention.