摘要:
A disposable cartridge (10), which is suitable to be used in a process of preparing a beverage, comprises a beverage making unit (1). A duct system (30) of the beverage making unit (1) has a main duct (31), a first subsidiary duct (32) which merges into the main duct (31), and a second subsidiary duct (33) which merges into the main duct (31) as well, at a different position than the first subsidiary duct (32). In a process of preparing a beverage, a first fluid is supplied by the main duct (31), and flows of a second fluid are supplied by the subsidiary ducts (32, 33). In this way, it is achieved that the second fluid is mixed with the first fluid in two steps. In case the second fluid is used for heating the first fluid, local boiling of the first fluid is prevented.
摘要:
A disposable cartridge (10), which is suitable to be used in a process of preparing a beverage, comprises a beverage making unit (1). A duct system (30) of the beverage making unit (1) has a main duct (31), a first subsidiary duct (32) which merges into the main duct (31), and a second subsidiary duct (33) which merges into the main duct (31) as well, at a different position than the first subsidiary duct (32). In a process of preparing a beverage, a first fluid is supplied by the main duct (31), and flows of a second fluid are supplied by the subsidiary ducts (32, 33). In this way, it is achieved that the second fluid is mixed with the first fluid in two steps. In case the second fluid is used for heating the first fluid, local boiling of the first fluid is prevented.
摘要:
A pump unit includes a reservoir for containing a liquid, a duct system for conveying the liquid, and a pumping section for subjecting the liquid to a pumping force. The initial filling of at least a portion of a duct for conveying the liquid from the reservoir to the pumping section is brought about under the influence of another force other than the pumping force, for example, under the influence of gravity.
摘要:
A pump unit (4) comprises a reservoir (20) for containing a liquid, a duct system (30) for conveying the liquid and a pumping section (50) for subjecting the liquid to a pumping force. Initially, in a pump unit according to the state of the art, the duct system is filled with air. This causes problems at the start of the operation of the pump unit, or, in case the applied pumping force is high enough to prevent such problems, this leads to a flow rate of the liquid that is too high. This problem is solved by bringing about an initial filling of at least a portion of a duct (31) for conveying the liquid from the reservoir (20) to the pumping section (50), under the influence of another force than a pumping force, for example under the influence of gravity.
摘要:
A system for preparing a beverage comprises a beverage maker (15) and a cartridge (10) that is removably arranged in the beverage maker (15). The cartridge (10) comprises a beverage making unit (1) having a duct system (30) for conveying flows of steam and flows of liquid. The duct system (30) comprises two combinations of ducts (31, 32; 41, 42), wherein the arrangement of the ducts (31, 32; 41, 42) of each combination is adapted to enabling a flow of steam to perform a pumping action on a flow of liquid. The beverage maker (15) comprises a steam generator (16) having two steam sockets (17, 18), wherein each of the steam sockets (17, 18) is in communication with another combination of ducts (31, 32; 41, 42) of the duct system (30). As each of the combinations of ducts (31, 32; 41, 42) is associated with a different steam inlet (36, 46), and the steam inlets (36, 46) may be located at different positions on the cartridge (10), it is achieved that the duct system (30) may be of a relatively simple design.
摘要:
A disposable cartridge (10), which is suitable for use in a process of preparing a beverage, comprises a pump unit (1). A duct system (30) of the pump unit (1) has a first duct (31) and a second duct (32) which merges into the first duct (31), wherein an angle (θ) between the ducts (31, 32) is considerably smaller than 90°. In a process of preparing a beverage, a first fluid is supplied by an inlet portion of the first duct (31), and a flow of a second fluid is supplied by the second duct (32). At the position where the ducts (31, 32) meet; a transfer of momentum from the flow of the second fluid to the first fluid takes place, so that an underpressure is obtained, as a result of which the first fluid is put in motion. Furthermore, a joint flow of the first fluid and the second fluid is obtained in an outlet portion of the first duct (31).
摘要:
A system for preparing a beverage comprises a beverage maker (15) and a cartridge (10) that is removably arranged in the beverage maker (15). The cartridge (10) comprises a beverage making unit (1) having a duct system (30) for conveying flows of steam and flows of liquid. The duct system (30) comprises two combinations of ducts (31, 32; 41, 42), wherein the arrangement of the ducts (31, 32; 41, 42) of each combination is adapted to enabling a flow of steam to perform a pumping action on a flow of liquid. The beverage maker (15) comprises a steam generator (16) having two steam sockets (17, 18), wherein each of the steam sockets (17, 18) is in communication with another combination of ducts (31, 32; 41, 42) of the duct system (30). As each of the combinations of ducts (31, 32; 41, 42) is associated with a different steam inlet (36, 46), and the steam inlets (36, 46) may be located at different positions on the cartridge (10), it is achieved that the duct system (30) may be of a relatively simple design.
摘要:
The spray assembly for a droplet spray teeth cleaning system includes a guidance member (40, 56, 80, 86) at the end thereof. The spray assembly includes a nozzle (24) through which a spray of liquid is directed to the teeth for cleaning. The guidance member is configured and mounted relative to the nozzle to provide a selected standoff distance between the nozzle and the teeth and includes a portion which is configured to fit in the interproximal space between adjacent teeth and gums, or against the frontal portions of the teeth, so that the user knows the location of the spray relative to the teeth.
摘要:
The surface detection system includes a source of an optical interrogating signal (44) which accompanies a droplet spray in an oral cleaning device directed to an oral surface (46). The interrogating optical signal is reflected from the oral surface which the spray impacts and detected (48). A selected characteristic of the reflected signal, such as intensity, is indicative of the nature of the oral surface, such as either gum tissue or a tooth surface. The detected reflected signal is then processed to determine the nature of the oral reflecting surface. The processor (50) then provides a resulting output signal which can be used to either warn the user concerning the nature of the oral surface or to change the characteristics of the spray appropriately according to the surface (51).
摘要:
The sprayhead device includes a housing (60) having an orifice plate (62) therein with at least one orifice opening (64) therethrough. A liquid line (36) delivers liquid to the sprayhead, where it proceeds through the orifice opening, wherein the liquid flow rate through the orifice and the liquid pressure are sufficiently great relative to the size of the orifice that the liquid moves through the orifice as a continuous stream. Gas is delivered to the housing and gas flows to the interior of the sprayhead through at least two openings (68) in the housing. The gas streams (flows) intercept the liquid flow perpendicularly, approximately 180° apart. The velocity of the gas flows is sufficient to break up the liquid stream from the orifice into a spray of droplets of desired size and velocity, accelerating them out of an acceleration duct (66) exit portion of the housing.