US-20260123733-A1 - BEAUTY EQUIPMENT

Abstract

A hair care device includes a sprayer disposed inside the housing. The sprayer includes a tank that stores therein liquid, two-fluid nozzle that discharges atomized liquid, a liquid feed pump that feeds liquid from the tank into two-fluid nozzle, and an air pump that is connected to two-fluid nozzle. Two-fluid nozzle includes first orifice unit for mixing the liquid from liquid supply channel with the air from air supply channel to atomize the liquid, and mist release port for discharging the liquid atomized in first orifice unit. Second orifice unit having an inner diameter larger than the inner diameter of first orifice unit is provided between first orifice unit and mist release port.

Inventors

• Yuki CHIKAZAWA
• Hirotoshi Oikaze
• Masato Kinoshita

Assignees

• PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Dates

Publication Date

20260507

Application Date

20260102

Priority Date

20210205

Claims (6)

1. 1 . Beauty equipment comprising: a housing including an intake port and a discharge port; and a sprayer that is disposed inside the housing, wherein: the sprayer includes: a reservoir that stores therein liquid; a two-fluid nozzle that discharges atomized liquid generated by atomizing the liquid; a liquid feed pump that feeds the liquid from the reservoir into the two-fluid nozzle; and an air pump that is connected to the two-fluid nozzle, the two-fluid nozzle includes: a liquid supply channel to which the liquid from the liquid feed pump is supplied; an air supply channel to which air from the air pump is supplied; a first orifice unit for mixing the liquid from the liquid supply channel with the air from the air supply channel to atomize the liquid; a mist release port for discharging the liquid atomized in the first orifice unit; and a second orifice unit provided between the first orifice unit and the mist release port, the liquid supply channel is connected to the first orifice unit at a connecting portion, and the first orifice unit has a recess at a portion facing the connecting portion.
2. 2 . The beauty equipment according to claim 1 , wherein the second orifice unit has an increasing diameter portion having an inner diameter increasing in a direction from the first orifice unit to the mist release port.
3. 3 . The beauty equipment according to claim 1 , wherein the second orifice unit has a constant diameter portion having an inner diameter that is constant.
4. 4 . The beauty equipment according to claim 1 , wherein the two-fluid nozzle includes: a body including the first orifice unit; and a counterpart including the second orifice unit.
5. 5 . The beauty equipment according to claim 4 , wherein the counterpart is formed of a material having a higher thermal expansion coefficient than a thermal expansion coefficient of a material of which the body is made.
6. 6 . The beauty equipment according to claim 1 , wherein: the first orifice unit includes: a constant diameter portion directly connected to an air supply channel side of the connecting portion, and having a constant inner diameter; and an increasing diameter portion directly connected to a second orifice side of the connecting portion, and comprising a portion having an inner diameter increasing in a direction from the connecting portion to the second orifice unit, and the liquid supply channel is connected to the first orifice between the constant diameter portion and the increasing diameter portion.

Description

CROSS-REFERENCE OF RELATED APPLICATIONS This application is a Divisional of Application No. 18/254,533 filed on May 25, 2023, which is the U.S. National Phase under 35 U.S.C. § 371 of International Patent Application No. PCT/JP2021/048145, filed on December 24, 2021, which in turn claims the benefit of Japanese Patent Application No. 2021-017277, filed on February 5, 2021, the entire disclosures of which Applications are incorporated by reference herein. TECHNICAL FIELD The present disclosure relates to a beauty equipment. BACKGROUND ART PTL 1 discloses a beauty equipment including a sprayer. This beauty device includes a tank that stores therein liquid, a nozzle that discharges atomized liquid, a pump that feeds the liquid from the tank into the nozzle, and a detector that detects the direction of the sprayer. Based on the direction of the sprayer detected by the detector, a controller adjusts the pump output. Citation List Patent Literature PTL 1: Unexamined Japanese Patent Publication No. 2018-196862 SUMMARY OF THE INVENTION Because the conventional beauty equipment cannot cope with the output fluctuation of the pump that feeds the liquid (liquid feed pump), there are chances that the amount sprayed out of the sprayer does not stabilize, and the conventional beauty equipment fails to supply an appropriate amount of liquid to a user. The present disclosure provides a beauty equipment provided with a sprayer capable of discharging liquid stably without being affected by a fluctuation in the amount of liquid fed by a liquid feed pump. A beauty equipment according to an aspect of the present disclosure includes a housing having an intake port and a discharge port, and a sprayer disposed inside the housing. The sprayer includes a reservoir that stores therein liquid, a two-fluid nozzle that discharges the atomized liquid, a liquid feed pump that feeds the liquid from the reservoir to the two-fluid nozzle, and an air pump connected to the two-fluid nozzle. The two-fluid nozzle includes a liquid supply channel into which the liquid from the liquid feed pump is supplied, and an air supply channel into which the air from the air pump is supplied. The two-fluid nozzle includes a first orifice unit for mixing the liquid from the liquid supply channel with the air from the air supply channel to atomize the liquid, and a mist release port for discharging the liquid atomized by the first orifice unit. Provided between the first orifice unit and the mist release port is a second orifice unit having an inner diameter larger than an inner diameter of the first orifice unit. According to the present disclosure, it is possible to provide a beauty equipment provided with a sprayer capable of discharging liquid stably without being affected by a fluctuation in the amount of liquid fed by a liquid feed pump. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a basic configuration of beauty equipment (hair care device) according to an exemplary embodiment. FIG. 2 is a block diagram illustrating a basic configuration of a sprayer. FIG. 3 is a breakaway perspective view illustrating a configuration of a two-fluid nozzle. FIG. 4 is a cross-sectional side view illustrating the configuration of the two-fluid nozzle illustrated in FIG. 3. FIG. 5 is a breakaway perspective view illustrating a configuration of a two-fluid nozzle according to another exemplary embodiment. FIG. 6 is a cross-sectional side view illustrating the configuration of the two-fluid nozzle illustrated in FIG. 5. DESCRIPTION OF EMBODIMENT Exemplary embodiments will now be explained in detail with reference to the drawings. However, descriptions more in details than necessary are sometimes omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. Note that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims in any way. A beauty equipment (hair care device 1) according to the present exemplary embodiment will now be explained with reference to FIGS. 1 to 4. Configuration To begin with, a configuration of hair care device 1 according to the present exemplary embodiment will be explained. Hair care device 1 according to the present exemplary embodiment is one example of the beauty equipment according to the present disclosure, and, in the present exemplary embodiment, is a hair dryer. FIG. 1 is a diagram illustrating a basic configuration of beauty equipment (hair care device 1) according to an exemplary embodiment. As illustrated in FIG. 1, hair care device 1 includes body 1a and handle 1b. Body 1a has housing 2 delineating an outer frame, and cavity 3 is provided inside housing 2. Cavity 3 has air flow channel 3a extending between intake port 4a provided on one side (right side in FIG. 1) of the long