IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0939881
(2010-11-04)
|
등록번호 |
US-8689680
(2014-04-08)
|
우선권정보 |
KR-10-2010-0097768 (2010-10-07) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
13 |
초록
▼
An eco green cookware is provided, having a double-layered wall structure and comprising a heat transfer medium within a cavity of the double-layered wall structure. The eco green cookware comprises: a container comprising an inner shell and an outer shell, wherein upper parts of the inner shell and
An eco green cookware is provided, having a double-layered wall structure and comprising a heat transfer medium within a cavity of the double-layered wall structure. The eco green cookware comprises: a container comprising an inner shell and an outer shell, wherein upper parts of the inner shell and outer shell are rolled a number of times together to form a rolled joint, an upper part of the inner shell is provided with a concave member, a heat transfer medium is provided within said cavity, a first heat transfer member is inserted and installed at the bottom portion of said cavity, and a second heat transfer member is affixed to the bottom surface of the first heat transfer member; an inner cover comprising an inner peripheral portion in the form of an inverted “L” whose inside bend forms a round portion; an outer cover; and pressure release devices.
대표청구항
▼
1. A cookware having a double-layered wall structure, comprising: a container comprising an inner shell (2) and an outer shell (3), wherein a cavity (4) is provided between said inner shell (2) and said outer shell (3), wherein upper parts of the inner shell and outer shell are rolled a predetermine
1. A cookware having a double-layered wall structure, comprising: a container comprising an inner shell (2) and an outer shell (3), wherein a cavity (4) is provided between said inner shell (2) and said outer shell (3), wherein upper parts of the inner shell and outer shell are rolled a predetermined number of times together to form a rolled joint (6), wherein an upper part of the inner shell (2) is provided with a concave member (7), wherein a heat transfer medium (8) is provided within said cavity (4), wherein a first heat transfer member (10) is inserted and installed at the bottom portion of said cavity (4), and wherein a second heat transfer member (12) is affixed to the bottom surface of the first heat transfer member (10);an inner cover (30) for covering the upper surface of the concave portion of said inner shell;an inner peripheral portion (36) provided along an edge of the inner cover (30) in the form of an inverted “L” whose inside bend forms a round portion, wherein the inner peripheral portion is made of steel material surrounded by an elastic lining material, and forms moisture sealing such that the cookware functions as a low pressure cooker and prevents vitamin loss in cooking;an outer cover (50) positioned above said inner cover (30); andpressure release devices (60, 70) for releasing the pressure within said cavity (4) when a pressure within said cavity (4) gets larger than a predetermined reference pressure; andsteam holes (38) formed on said inner cover (30) for releasing pressure built up the container (1) and liquid overflow from below to a gap between the inner cover (30) and the outer cover (50),wherein there is a downward slope from the steam holes (38) to the edge of the inner cover (30) so that, during cooking, steam gets out of the steam holes, condenses into water, and flows to the concave member to form the moisture sealing for preventing vapor steam from leaking out;wherein the elastic lining material expands during cooking so that increased adhesion and friction between the elastic lining material and the inner shell prevents the inner cover from opening when the container is pressurized during cooking. 2. The cookware according to claim 1, wherein said heat transfer medium (8) is silicon oil. 3. The cookware according to claim 1, wherein said first heat transfer member (10) and said second heat transfer member (12) are made of aluminum or copper. 4. The cookware according to claim 1, wherein said pressure release device (60) comprises a valve member (66) with an elastic property, said valve member comprising a valve body (66-1) in the form of a hollow cylinder, a valve neck (66-2), and a valve head (66-3), said valve neck (66-2) extending to said valve body (66-1) and having a smaller diameter than the valve body (66-1), and said valve head (66-3) tapered forwardly, wherein said valve neck (66-2) is inserted into a hole (65) of an outer shell (3) of said container (1). 5. The cookware according to claim 1, wherein said pressure release device (70) comprises a fixing member (72), an elastic member (74), and an elastic supporting member (76), said fixing member (72) comprising a fixing body (72-1), a fixing head (72-2), and a fixing nut (72-3), said fixing member (72) being hollow, wherein a hollow portion of said fixing body (72-1) has a greater diameter than a hollow portion of said fixing head part (72-2), and wherein said elastic member (74) is provided within the hollow portion of said fixing body (72-1), said elastic member (74) comprising an elastic body (74-1) for performing elastic action and an elastic head (74-2) for sealing the hollow portion of said fixing head part (72-2) at normal times, and said elastic supporting member (76) being coupled to a screw of said fixing body (72-1) of said fixing member (72) and supporting said elastic member (74), and having a hole at one end. 6. The cookware according to claim 1, wherein the elastic lining material comprises a silicon rubber. 7. The cookware according to claim 1, wherein the rolled joint (6) is made by performing seamless electrical welding on edges of the inner shell (2) and the outer shell (3). 8. The cookware according to claim 5, wherein the elastic body (74-1) is in a shape of a screw, and the elastic head (74-2) comprises a needle valve which is made of heat resistant rubber; wherein the fixing head (72-2) is placed in an inner space of the outer shell (2), and the fixing nut (72-3) is made of heat resistant material;wherein the fixing member (72) is securely affixed to the outer shell (2) by the fixing nut (72-3) engaged with external threads of the fixing body (72-1);wherein the elastic supporting member (76) has internal threads engaged with the external threads of the fixing body (72-1); andwherein the elastic member (74) biases the elastic head (74-2) against the hole (76-1) and any excessive pressure generated from the cavity (4) is released through the pressure release device (70) and through the hole (76-1) by elastic movement of the elastic head (74-2) when sufficient pressure is created in the cavity (4).
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