摘要:
A dielectric resonator antenna which emits an electric wave by having a dielectric body resonate is disclosed. A magnetic material is contained in the electric body, thereby increasing the relative permeability to more than 1 and lowering the relative permittivity. Consequently, the Q-value of the resonance can be lowered while maintaining the rate of wavelength shortening. With this technique, a broadband dielectric resonator antenna can be realized.
摘要:
A dielectric resonator antenna which emits an electric wave by having a dielectric body resonate is disclosed. A magnetic material is contained in the electric body, thereby increasing the relative permeability to more than 1 and lowering the relative permittivity. Consequently, the Q-value of the resonance can be lowered while maintaining the rate of wavelength shortening. With this technique, a broadband dielectric resonator antenna can be realized.
摘要:
A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be radially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.
摘要:
A method of manufacturing a double pipe includes a step of inserting a straight inner pipe into a straight outer pipe such that the inner pipe and the outer pipe are positioned at a predetermined relative position, a step of fixing a first end portion of the outer pipe to the inner pipe so as to form a first fixing portion, a step of bending the outer pipe and the inner pipe at the same time at a predetermined portion so as to form at least one bending portion after the fixing step of the first end portion, and a step of fixing a second end portion of the outer pipe to the inner pipe so as to form a second end portion after the bending.
摘要:
A thermoelectric converter comprises a thermoelectric element assembly that includes a plurality of P-type thermoelectric elements and a plurality of N-type thermoelectric elements which are arranged in a predetermined arrangement pattern; and a heat-exchange element assembly provided with a plurality of heat exchange elements and a retaining plate retaining the plurality of the heat exchange elements, the plurality of the heat exchange elements being retained in a predetermined arrangement condition corresponding to a arrangement condition of the thermoelectric elements. Then, a plurality of joining sites between the thermoelectric element assembly and the heat-exchange element assembly are all together joined by joining members in a state in which the thermoelectric element assembly and the heat-exchange element assembly are stacked on each other.
摘要:
An external skin treatment composition comprising erythritol, hydrogenated lecithin, and a polyoxyethylene-added cholesterol derivative, which is superior in prevention and improvement of skin roughness, with little sticky feeling, with quick absorption into the skin, and superior in the softening effect on the corneum.
摘要:
A pipe joint has a joint main body, a union nut connected to the joint main body, and a lock ring. The lock ring has a tubular wall, and a first axial end and a second axial end of the tubular wall are deformable by inner walls of tapered hole portion of the joint main body and the union nut. The lock ring has a first tapered opening portion providing a first groove for receiving a first end of a first pipe member and a second tapered opening portion providing a second groove for receiving a second end of a second pipe member, in a radial inside of the tubular wall. A radial outer surface of the first tapered opening portion and a radial outer surface of the second tapered opening portion are tapered such that the first groove and the second groove are narrowed toward its ends, respectively.
摘要:
A method of manufacturing a double pipe includes a step of inserting a straight inner pipe into a straight outer pipe such that the inner pipe and the outer pipe are positioned at a predetermined relative position, a step of fixing a first end portion of the outer pipe to the inner pipe so as to form a first fixing portion, a step of bending the outer pipe and the inner pipe at the same time at a predetermined portion so as to form at least one bending portion after the fixing step of the first end portion, and a step of fixing a second end portion of the outer pipe to the inner pipe so as to form a second end portion after the bending.
摘要:
The configuration comprises a shaping member 3 having a substantially rectangular shape and shaping the inner surface side of a bent portion 1b, a worm gear 2 slidably linked with the shaping member 3 and gradually reducing the distance between the shaping members 3 for sequentially feeding the shaping member 3 from one side to the other side, and a reference member 4 arranged so that the upper end surface of the bent portion 1b comes into contact with its reference surface, and the distance between the shaping members 3 is gradually reduced to a predetermined fin pitch and the upper end surface of the bent portion 1b is shaped into a predetermined shape by rotating the worm gear 2 after the plurality of bent portions 1b are arranged at the shaping members 3. Due to this, it is possible to shape the bent portion into a continuous and stable shape.
摘要:
In a thermoelectric transducer, a plurality of P-type thermoelectric devices and N-type thermoelectric devices are alternately arranged on an insulating board, and each of a plurality of electrode members is connected to two end portions of adjacent N-type and P-type thermoelectric devices for electrically connecting the adjacent N-type and P-type thermoelectric devices. Furthermore, a plurality of heat exchanging members each of which includes an electrode portion connectable to the electrode member and a heat exchanging portion for exchanging heat transmitted from the electrode portion are located at two sides of a thermoelectric device substrate to form a heat absorbing part and a heat radiating part partitioned from each other. The electrode portions and the heat exchanging portions have, respectively, the same shapes, and the electrode portions and the heat exchanging portions are arranged in the same direction in all the heat exchanging members of each heat absorbing or radiating part.