摘要:
A thermal expansion valve for controlling flow of refrigerant from a high pressure (condenser) inlet to a low pressure (evaporator) outlet. The main valve is operated by pressure in a temperature sensing fluid filled capsule acting on a diaphragm connected to a valve operating rod. Upstream of the main valve, mounted on the same block is a solenoid operated shutoff valve. A first noise reducing restricting orifice is disposed in the high pressure inlet upstream of the shutoff valve. A second noise reducing restricting orifice is disposed in the shutoff valve which is preferably pilot operated.
摘要:
A movement detector and fluid shut-off device, including a housing having an ingress and egress for fluid flow. The device including a valve shut-off means for selectively blocking fluid flow. The valve shut-off means includes a plunger normally urged towards the egress. The plunger has a front end which is capable of sealing the egress. The device also includes a detector means for detecting movement. The detector means includes a free weight hung on internal structure of the housing defining support structure. The detector means further includes release means which holds the plunger in a first position away from the egress allowing fluid flow and releases the plunger to its second, activated, position upon sufficient oscillation of the free weight.
摘要:
Two case members of the same shape are attached to the body of an expansion valve and a temperature sensing drive element through sound insulating members. Each of the two case members is formed having upper retaining and retainable portions at its upper part and lower retaining and retainable portions at its lower part. The upper retaining portion, upper retainable portion, lower retaining portion, and lower retainable portion of one of the case members are in engagement with the upper retainable portion, upper retaining portion, lower retainable portion, and lower retaining portion, respectively, of the other case member.
摘要:
A method for preventing hunting of a thermal expansion valve used to control the flow of refrigerant supplied to an evaporator in a refrigeration cycle. A refrigeration apparatus is provided with a compressor, a condenser, a receiver, an expansion valve, and an evaporator connected in this order, spherically activated carbon made of phenol having pore sizes fit for molecular sizes of a working fluid is prepared; and the spherically activated carbon is provided into the expansion valve; whereby hunting, or the repeated opening and closing of the expansion valve, is prevented.
摘要:
Electronic device operable by an user for regulating and controlling ambient parameters, such as ambient temperature, comprising a processing unit, a display device for displaying selectable control functions and setting parameters related to a set of desired ambient conditions and a selection/control unit for selecting by the user at least one control function or setting parameter from among a set of displayed control functions or setting parameters. The device comprises an interactive display of a dot matrix type able to display to a user variable indications comprising at least the specific control function associated with each of said selection/control unit according to the specific selection made by the user.
摘要:
A heat transmission retardant member 140 is formed of a cup-like shaped resin material utilizing nylon or polyacetals, comprising a collar 141 formed to the outside of the upper end thereof, and a thick-walled cylinder portion 143 having at the lower end thereof a tapered portion 142. Said retardant member 140 is positioned so that the upper end contacts a support member 82′, said collar 141 is supported by the inner surface of a housing 81, the outer surface of said cylinder portion 143 contacts the inner surface of said housing 81, and the end of said tapered portion 142 is inserted to a second hole 72 and contacting the outer surface of a heat-sensing driven member 100 and further positioned within a lower chamber 85 defined by a diaphragm 82. Said retardant member 140 is mounted to said driven member 100 so as to cover the outer surface thereof and being mounted outside the second refrigerant passage 63, said tapered portion 143 defining a space 144 between the exterior of the driven member 100 and the interior of said cylinder portion 142. Not only is the hunting phenomenon suppressed by the existence of the activated carbon, but the invasion of the refrigerant to the lower chamber 85 is prevented, and the heat from the heat transmission retardant member 140 is transmitted to the heat-sensing driven member 100 via space 144 which enables to provide a further retardation to the response of the valve to the temperature change of the refrigerant exiting the evaporator. The hunting is further suppressed effectively.
摘要:
A thermal expansion valve body for a thermal expansion valve. In order to provide universality so that the thermal expansion valve can ultimately be formed with an inlet and outlet either being aligned or at an angle to one another, the thermal expansion valve body includes an inlet protrusion for the inlet an outlet protrusion for the outlet, and a bypass aperture protrusion for a bypass aperture. The outlet protrusion and the bypass protrusion are substantially identical such that the outlet can be formed in one the outlet and bypass protrusions, and the bypass aperture can be formed in the other of the outlet and bypass protrusions.