A pressure relief facility for a refrigeration appliance with a body defining a chamber and having a peripheral rim, the appliance having a door with a peripheral gasket operable between an open position in which the gasket is away from the rim and a closed position in which the gasket sealably contacts the rim. The relief facility includes a planar body having opposed major faces and having opposed first and second peripheral edges. The body has a number of passages adjacent to each other, each passage having a first opening at the first peripheral edge, and a second opening at the second peripheral edge. An adhesive element is attached on one of the major faces adapted to secure the body to the rim of the appliance body in registration with to the gasket with the first openings in communication with the chamber, and the second openings in communication with ambient air. The planar body may be an elongated rectangular piece of corrugated plastic, with the passages running transverse to the length.

A domestic appliance has a carcass, a door for closing an inner space, a differential pressure sensor having a sensor membrane for identifying a difference in pressure between an interior air pressure in the inner space and an exterior air pressure in an outer space, a door opening aid for assisting the door opening process, and a control unit for the door opening aid which is dependent on the detected difference in pressure. The control unit is configured to detect a pressure curve of the difference in pressure and to control the door opening aid depending on the pressure curve that has been detected.

The present disclosure relates to an intelligent positive and negative pressure system and an operation method therefor, and an intelligent positive and negative pressure electric appliance. The system comprises a positive and negative pressure intelligent fresh-keeping refrigerator, a positive and negative pressure intelligent washing machine, a positive and negative pressure dish washing and fruit and vegetable cleaning machine, a positive and negative pressure range hood, a positive and negative pressure baking and frying microwave oven, a positive and negative pressure fresh-keeping compartment container, a positive and negative pressure fresh-keeping warehouse, a positive and negative pressure disinfection machine, and a positive and negative pressure module cabinet. By means of the positive and negative pressure system, a fluid and a carried substance thereof are regulated and controlled by means of positive and negative pressure, so as to affect an object in a specific space in a targeted manner.

There is provided an arrangement for adjusting temperature in at least one location within a target volume. The arrangement comprises one or more elements comprising sound inputs, gas inputs and gas outputs, said gas outputs arranged in a plurality of locations in the target volume; at least one temperature measurement device capable of determining a temperature of at least one of the locations; a sound wave generator for modifying gas output to the target volume by one or more sound waves fed into the sound inputs; a controller connected at least to the temperature measurement device and the sound wave generator to cause generating one or more sound waves on the basis of the temperature obtained by the temperature measurement device such that the temperature at the location of temperature measurement is caused to decrease or increase towards a target temperature defined for the location.

A refrigerator is disclosed. The refrigerator includes a cabinet, a freezing compartment defined in the cabinet, a door coupled to the cabinet so as to open and close the freezing compartment, and a pressure regulator mounted on the cabinet on as to allow an inside of the freezing compartment to communicate with an outside of the freezing compartment to reduce the difference in pressure when the door is opened, wherein the pressure regulator includes a connecting tube mounted at the position on the cabinet, an air introduction tube connected to the connecting tube outside of the cabinet, an opening device mounted in the air introduction tube so as to open and close an inlet of the air introduction tube, and a heater disposed around the connecting tube so as to heat the connecting tube to thus eliminate frost accumulated on the inner surface of the connecting tube.

Provided is a negative pressure release port that can prevent freezing in a channel. This negative pressure release port comprises: a cylindrical member made of a pipe in which a fluid can pass through and a base; a heating element disposed on one end inside the pipe; a retaining member that retains the heating element; a rib that connects an inner wall face of the pipe and the retaining member; and a check valve that is provided inside the base provided more toward the other end than the heating element, that allows air passing through the interior of the base to flow from the other end to the one end, and prevents flow from the one end to the other end.

A combination light and pressure relief vent (10) is disclosed which includes a housing (11), a valve assembly (12), and a light assembly (13). The housing include a valve body (16), port tube (17), and an outside louver (18). The valve body has a low pressure intake port (25), a high pressure intake port (26), and a low pressure exhaust port (27). The valve assembly includes a low pressure intake valve (40), a high pressure intake valve (42), and a low pressure exhaust valve (44). The light assembly includes a heat sink casing (51) which partially defines a heat chamber (52). The casing has a front wall (55) to which is mounted an LED module (57). A lens cover (61) is coupled to the front surface of the casing. Heat generated by the LED module is transferred through the casing to the heat chamber to warm the valve assembly.

The invention relates to a method for the pressure-based determining of a product parameter in a freeze dryer, in particular a product temperature. In a method of this type at a point in time t.sub.START a closing element as an intermediate valve between an ice chamber and a drying chamber of the freeze dryer is closed. Then, during a pressure rise occurring due to the sublimation pressure values (P.sub.1, P.sub.2, . . . ) are measured in the drying chamber. At a point in time t.sub.END then the closing element is opened. From the measured pressure values (P.sub.1, P.sub.2, . . . ) an approximation of a product parameter, in particular a product temperature T.sub.APPROX, is determined.

According to the invention the point in time t.sub.END is determined specifically for the measured pressure values (P.sub.1, P.sub.2, . . . ) such that the time span for which the closing element is closed and the pressure rising occurs depends on the determined pressure values and such that the time span is variable during a drying process.

By use of the inventive method it is in particular possible to avoid an undesired start of thawing of the drying product.

For the purpose of improving a usability, a home appliance door, in particular a home chiller appliance door, is proposed: The home appliance door has an inner wall section; an outer wall section; a valve connecting the inner wall section and the outer wall section; and a cover element which is separate from and fixed to the valve and at least partly covers the inner wall section.

Provided are a door seal and a refrigeration container having the door seal. The door seal comprises a sealing air chamber portion and a latching tongue portion. The latching tongue portion is used to be connected to the door body. The latching tongue portion comprises a barb and a fixed plate for connecting the barb to the sealing air chamber portion. The sealing air chamber portion is connected to the fixed plate through a connection portion, and a gap is formed between the sealing air chamber portion and the fixed plate. Several through holes are provided on the fixed plate at a position between the barb and the connection portion. The through holes are arranged on the fixed plate without affecting the appearance. When the door body is closed, the through holes are pressed and blocked by the sealing air chamber portion without affecting the sealing.