US20110262119A1 - Steam generating device - Google Patents

Steam generating device Download PDF

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Publication number
US20110262119A1
US20110262119A1 US12/662,538 US66253810A US2011262119A1 US 20110262119 A1 US20110262119 A1 US 20110262119A1 US 66253810 A US66253810 A US 66253810A US 2011262119 A1 US2011262119 A1 US 2011262119A1
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United States
Prior art keywords
heat tube
waterway
tube
inlet
generating device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/662,538
Inventor
Pet-Cheng Hsu
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US12/662,538 priority Critical patent/US20110262119A1/en
Publication of US20110262119A1 publication Critical patent/US20110262119A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/282—Methods of steam generation characterised by form of heating method in boilers heated electrically with water or steam circulating in tubes or ducts

Definitions

  • the present invention relates to a steam generating device, and more particularly, to a steam generating device having a pre-heat tube to increase the efficiency for generating steam.
  • a conventional steam generating device is cooperated with a water tank from which water is pumped into the steam generating device and heated to generate steam.
  • the steam is ejected from an outlet to clean stains or kill germs or even to iron wrinkles of fabrics.
  • the conventional steam generating device is shown in FIG. 5 and generally includes a body 60 which includes a waterway 61 defined longitudinally therein. An inlet 61 and an outlet 63 are respectively connected to the body 60 and communicate with the waterway 61 .
  • a U-shaped heating tube 70 is connected to the body 60 and located close to the waterway 61 . Two free ends 71 of the heating tube 70 are exposed from the body 60 and connected to a power source which is not shown.
  • the heating tube 70 generates high temperature which is absorbed by the way in the waterway 61 so as to transfer the water in the waterway 61 into steam which is ejected from the outlet 63 .
  • the length of the body 60 is limited so as to be installed into the casing of the appliance so that the time that the water in the waterway is too short to be heated to become steam.
  • What ejected from the outlet 63 is a mixture of water and steam, and the mixture containing too much water and has lower temperature than expected.
  • the present invention intends to provide a steam generating device which includes a pre-heat tube such that water is pre-heated before entering into the waterway and the steam ejected from the outlet contains less water and has high temperature.
  • the present invention relates to a steam generating device that comprises a body having a waterway defined longitudinally therein. An inlet and an outlet are respectively connected to two ends of the body and communicate with the waterway.
  • a heating tube is connected to the body and located close to the waterway.
  • a pre-heat tube is connected to the body and located close to the heating tube.
  • the pre-heat tube includes a first end and a second end, wherein the first end introduces cold water into the pre-heat tube and the second end is connected to the inlet so as to deliver the pre-heated water into the waterway.
  • the primary object of the present invention is to provide a steam generating device that generates steam containing less water and has high temperature by suing a pre-heat tube.
  • FIG. 1 is a perspective view to show the steam generating device of the present invention
  • FIG. 2 is an exploded view to show the body, the pre-heat tube and the connection tube of the present invention
  • FIG. 3 shows the steam generating device is installed in an appliance
  • FIG. 4 is a perspective view to show the steam generating device of the present invention having a spiral pre-heat tube
  • FIG. 5 is a cross sectional view to show the conventional steam generating device.
  • the steam generating device of the present invention comprises a metallic and elongate body 60 , a U-shaped heating tube 70 , a U-shaped pre-heat tube 10 and a connection tube 20 .
  • the body 60 and the heating tube 70 are similar to those disclosed in the conventional steam generating device.
  • the body 60 has a waterway 61 defined longitudinally therein.
  • An inlet 61 and an outlet 63 are respectively connected to two ends of the body 60 and communicate with the waterway 61 .
  • the U-shaped heating tube 70 is connected to the body 60 and located close to the waterway 61 . Two free ends 71 of the heating tube 70 are exposed from the body 60 and connected to a power source which is not shown.
  • the body 60 has a recess 32 defined in an outside 30 thereof and the recess 32 is located close to the heating tube 70 .
  • the pre-heat tube 10 is received in the recess 32 .
  • the pre-heat tube 10 includes a U-shaped tubular body 11 which has the first end 12 and the second end 13 .
  • the first end 12 introduces cold water into the pre-heat tube 10 and the second end 13 is connected to the inlet 62 to the body 60 .
  • the connection tube 20 includes a first connection end 21 and a second connection end 23 , the first connection end 21 is connected to the inlet 62 of the body 60 and the second connection end 23 is connected to the second end 13 of the pre-heat tube 10 .
  • the cold water is introduced into the pre-heat tube 10 via the first end 12 of the pre-heat tube 10 and the water in the pre-heat tube 10 is pre-heated by the heating tube 70 .
  • the pre-heated water then flows into the waterway 61 via the connection tube 20 and the inlet 62 . Because the water entering the waterway 61 is pre-heated, so that the temperature of the pre-heated water can be easily raised and transferred into steam. In other words, the travel distance of the water is increased while the size of the body 60 does not change too much, and the efficiency is increased.
  • FIG. 3 shows an appliance 40 includes a space 41 defined therein and the body 60 and the pre-heat tube 10 are located in the space 41 and enclosed by a casing 42 .
  • the connection tube 20 , the free ends 71 of the heating tube 70 and the outlet 63 are exposed from the casing 42 .
  • the outlet 63 is in communicating with the nozzle 43 from which the steam is ejected.
  • FIG. 4 shows another embodiment of the pre-heat tube 101 which has a spiral tubular body 111 and spirally located around the body 60 .
  • the second end 13 of the pre-heat tube 101 is connected to the inlet 62 and the first end of the pre-heat tube 101 introduces cold water into the pre-heat tube 101 .
  • the pre-heat tube 10 is received in the recess 32 in the outside 30 of the body 60 so that the size of the body 60 does not need to change too much and can still be installed in the appliances.
  • the travel distance of the water is increased and the time for absorbing the heat is increased so that the water can be transferred into steam efficiently.
  • the casing 42 encloses the pre-heat tube 10 and the body 60 to reduce heat loss during operation.

Abstract

A steam generating device includes a body having a waterway defined longitudinally therein, and an inlet and an outlet are respectively connected to the body and communicate with the waterway. A heating tube is connected to the body and located close to the waterway. A pre-heat tube is connected to outside of the body and has a first end for introducing cold water into the pre-heat tube and a second end connected to the inlet. The cold water is pre-heated in the pre-heat tube before entering the waterway so that the water in the waterway is easily transferred into steam.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a steam generating device, and more particularly, to a steam generating device having a pre-heat tube to increase the efficiency for generating steam.
  • 2. Description of the Prior Art
  • A conventional steam generating device is cooperated with a water tank from which water is pumped into the steam generating device and heated to generate steam. The steam is ejected from an outlet to clean stains or kill germs or even to iron wrinkles of fabrics.
  • The conventional steam generating device is shown in FIG. 5 and generally includes a body 60 which includes a waterway 61 defined longitudinally therein. An inlet 61 and an outlet 63 are respectively connected to the body 60 and communicate with the waterway 61. A U-shaped heating tube 70 is connected to the body 60 and located close to the waterway 61. Two free ends 71 of the heating tube 70 are exposed from the body 60 and connected to a power source which is not shown. The heating tube 70 generates high temperature which is absorbed by the way in the waterway 61 so as to transfer the water in the waterway 61 into steam which is ejected from the outlet 63.
  • However, the length of the body 60 is limited so as to be installed into the casing of the appliance so that the time that the water in the waterway is too short to be heated to become steam. What ejected from the outlet 63 is a mixture of water and steam, and the mixture containing too much water and has lower temperature than expected.
  • The present invention intends to provide a steam generating device which includes a pre-heat tube such that water is pre-heated before entering into the waterway and the steam ejected from the outlet contains less water and has high temperature.
    • SUMMARY OF THE INVENTION
  • The present invention relates to a steam generating device that comprises a body having a waterway defined longitudinally therein. An inlet and an outlet are respectively connected to two ends of the body and communicate with the waterway. A heating tube is connected to the body and located close to the waterway. A pre-heat tube is connected to the body and located close to the heating tube. The pre-heat tube includes a first end and a second end, wherein the first end introduces cold water into the pre-heat tube and the second end is connected to the inlet so as to deliver the pre-heated water into the waterway.
  • The primary object of the present invention is to provide a steam generating device that generates steam containing less water and has high temperature by suing a pre-heat tube.
  • The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view to show the steam generating device of the present invention;
  • FIG. 2 is an exploded view to show the body, the pre-heat tube and the connection tube of the present invention;
  • FIG. 3 shows the steam generating device is installed in an appliance;
  • FIG. 4 is a perspective view to show the steam generating device of the present invention having a spiral pre-heat tube, and
  • FIG. 5 is a cross sectional view to show the conventional steam generating device.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 1 and 2, the steam generating device of the present invention comprises a metallic and elongate body 60, a U-shaped heating tube 70, a U-shaped pre-heat tube 10 and a connection tube 20. The body 60 and the heating tube 70 are similar to those disclosed in the conventional steam generating device. The body 60 has a waterway 61 defined longitudinally therein. An inlet 61 and an outlet 63 are respectively connected to two ends of the body 60 and communicate with the waterway 61. The U-shaped heating tube 70 is connected to the body 60 and located close to the waterway 61. Two free ends 71 of the heating tube 70 are exposed from the body 60 and connected to a power source which is not shown.
  • The body 60 has a recess 32 defined in an outside 30 thereof and the recess 32 is located close to the heating tube 70. The pre-heat tube 10 is received in the recess 32. The pre-heat tube 10 includes a U-shaped tubular body 11 which has the first end 12 and the second end 13. The first end 12 introduces cold water into the pre-heat tube 10 and the second end 13 is connected to the inlet 62 to the body 60. The connection tube 20 includes a first connection end 21 and a second connection end 23, the first connection end 21 is connected to the inlet 62 of the body 60 and the second connection end 23 is connected to the second end 13 of the pre-heat tube 10.
  • The cold water is introduced into the pre-heat tube 10 via the first end 12 of the pre-heat tube 10 and the water in the pre-heat tube 10 is pre-heated by the heating tube 70. The pre-heated water then flows into the waterway 61 via the connection tube 20 and the inlet 62. Because the water entering the waterway 61 is pre-heated, so that the temperature of the pre-heated water can be easily raised and transferred into steam. In other words, the travel distance of the water is increased while the size of the body 60 does not change too much, and the efficiency is increased.
  • FIG. 3 shows an appliance 40 includes a space 41 defined therein and the body 60 and the pre-heat tube 10 are located in the space 41 and enclosed by a casing 42. The connection tube 20, the free ends 71 of the heating tube 70 and the outlet 63 are exposed from the casing 42. The outlet 63 is in communicating with the nozzle 43 from which the steam is ejected.
  • FIG. 4 shows another embodiment of the pre-heat tube 101 which has a spiral tubular body 111 and spirally located around the body 60. The second end 13 of the pre-heat tube 101 is connected to the inlet 62 and the first end of the pre-heat tube 101 introduces cold water into the pre-heat tube 101.
  • The pre-heat tube 10 is received in the recess 32 in the outside 30 of the body 60 so that the size of the body 60 does not need to change too much and can still be installed in the appliances. The travel distance of the water is increased and the time for absorbing the heat is increased so that the water can be transferred into steam efficiently. The casing 42 encloses the pre-heat tube 10 and the body 60 to reduce heat loss during operation.
  • While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (3)

1. A steam generating device comprising:
a body having a waterway defined longitudinally therein, an inlet and an outlet respectively connected to the body and communicating with the waterway, a heating tube connected to the body and located close to the waterway, and
a pre-heat tube connected to the body and having a first end and a second end, the first end adapted to introduce cold water into the pre-heat tube and the second end connected to the inlet.
2. The device as claimed in claim 1, wherein the pre-heat tube has a U-shaped tubular body which includes the first end and the second end, a connection tube includes a first connection end and a second connection end, the body has a recess defined in an outside thereof and the recess is located close to the heating tube, the pre-heat tube is received in the recess and the first connection end is connected to the inlet of the body and the second connection end is connected to the second end of the pre-heat tube.
3. The device as claimed in claim 1, wherein the pre-heat tube has a spiral tubular body which spirally located around the body, the second end of the pre-heat tube is connected to the inlet and the first end of the pre-heat tube adapted to introduce cold water into the pre-heat tube.
US12/662,538 2010-04-22 2010-04-22 Steam generating device Abandoned US20110262119A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/662,538 US20110262119A1 (en) 2010-04-22 2010-04-22 Steam generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/662,538 US20110262119A1 (en) 2010-04-22 2010-04-22 Steam generating device

Publications (1)

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US20110262119A1 true US20110262119A1 (en) 2011-10-27

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US12/662,538 Abandoned US20110262119A1 (en) 2010-04-22 2010-04-22 Steam generating device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015106571A1 (en) * 2014-01-14 2015-07-23 宁波金阳光电热科技有限公司 Pressure type liquid quick heater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6906291B2 (en) * 2003-09-09 2005-06-14 Samsung Electronics Co., Ltd. Overheated steam oven

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6906291B2 (en) * 2003-09-09 2005-06-14 Samsung Electronics Co., Ltd. Overheated steam oven

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015106571A1 (en) * 2014-01-14 2015-07-23 宁波金阳光电热科技有限公司 Pressure type liquid quick heater

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