A ductless fumehood system, the system comprising: at least one ductless fumehood, the ductless fumehood comprising: a housing; a workspace formed within the housing; a door for selectively closing off the workspace; an air inlet for introducing air into the workspace; a master module for receiving air from the workspace, purging unwanted substances from that air, and then exhausting that filtered air to the ambient room atmosphere, wherein the master module comprises: a master module filter; a master module filter sensor for determining proper functioning of the master module filter; a master module exhaust fan for moving air from the workspace, through the master module filter and out into the ambient room atmosphere; a master module alarm for alerting an operator of a function failure within the ductless fumehood; and a master module central processing unit for (i) controlling the operation of the active elements of the master module, (ii) detecting a function failure of the master module, and (iii) activating the master module alarm in the event of a failure within the master module; and at least one slave module for receiving air from the workspace, purging unwanted substances from that air, and then exhausting that filtered air to the ambient room atmosphere, wherein the slave module comprises: a slave module filter; a slave module filter sensor for determining proper functioning of the slave module filter; a slave module exhaust fan for moving air from the workspace, through the slave module filter and out into the ambient room atmosphere; wherein the at least one slave module is in communication with the master module such that the master module central processing unit is capable of (i) controlling the operation of the active elements of the slave module, (ii) detecting a function failure of the slave module, and (iii) activating the master module alarm in the event of a failure within that slave module.

A ductless fumehood system, the system comprising: at least one ductless fumehood for purging hazardous substances from a workspace located within the ductless fumehood; and a remote monitor unit for receiving information from the at least one ductless fumehood and issuing an alert upon the occurrence of a pre-determined condition at the at least one ductless fumehood.

A ductless fumehood comprising: a housing; a workspace formed within the housing; a door for selectively closing off the workspace; an air inlet for introducing air into the workspace; an air outlet for removing air from the workspace; a filter system for receiving air from the air outlet, purging unwanted substances from that air, and then exhausting that filtered air to t

The present invention relates to a sealed and ventilated receptacle for storing equipment, such as firefighter turnout gear, that generally includes a base, at least one sidewall extending from the base, and a top wall that covers the opposite end of the sidewall. A sealable door may be positioned on the sidewall to access the inside of the receptacle and to prevent any contaminants from exiting the receptacle. The receptacle may also include an intake fan and exhaust fan that are each connected to a duct for providing fresh air to and removing contaminated air from the inside of the receptacle. The receptacle may further include a temperature control unit for regulating the temperature inside of the receptacle. Additionally, a hook for hanging a firefighter coat, trousers, or other items may also be included on the inside of the receptacle.

An apparatus including a sensor configured to sense total pressure within an inner chamber of a housing, and to sense differential pressure between the inner chamber of the housing and work area outside of the housing; a computer processor configured to receive signals from the sensor based on the total pressure and the differential pressure; and wherein the computer processor controls the rate at which the flapper oscillates based on the total pressure signal from the sensor, to thereby control the direction of flow of air from the inner chamber of the housing through the plurality of openings of the blade, through the plurality of openings of the teeth, for optimum containment with ultra stable vortex inside the chamber; and controls the rate at which exhaust damper modulates based on differential pressure signal to maintain constant face velocity at the apparatus user opening and out an exhaust opening of the housing.

The present invention relates to a laboratory apparatus, comprising a UV radiation device which has at least one UV lamp to carry out a disinfection process, and a control device to control the UV lamp, wherein the control device is designed to specify a duration (t) during which the UV lamp is operated during the disinfection process. The control device is designed to specify the duration (t) using a control function stored in the control device as a function of the operating time (d) of the UV lamp, in such a manner that the duration (t) increases with increasing operating time (d). The present invention further relates to a method for operating such a laboratory apparatus.

The present invention provides a steady flow structure and a ventilation apparatus having the steady flow structure. The ventilation apparatus comprises: a hood arranged indoors, an inner chamber of the hood constituting a work chamber; and a front wall of the hood formed with a front opening which opens towards the indoor environment; an air supply duct, which supplies air into the work chamber through air supply outlets provided on the hood and extending in the left and right width direction of the work chamber; and an air exhaust duct, through which the air entering the work chamber through the front opening and the air entering the work chamber through the air supply outlets are exhausted from the work chamber to outside; a steady flow structure is provided in the interior of the air supply duct, supply airflow enters into the steady flow structure in the left-right directions, and then blows out evenly and stably along the air supply outlets located along the sides of the steady flow structure after flowing through the steady flow structure.

A device for cleaning, for example degritting or desanding, a turbomachine module comprising: (i) structure for isolating bearings of the module, by containment in a closed enclosure; (ii) structure for overpressurizing said enclosure; (iii) means for stripping material deposited in the walls of annular recesses of the module; and (iv) structure for sucking up the material thus stripped.

The present invention relates to a safety workbench, in which, for the purpose of calibrating the safety workbench before beginning regular operation, a device control unit is implemented to cause measurement means to ascertain an actual measured value, which is representative of a flow velocity achieved at normal fan performance, an analysis unit is implemented to compare the actual measured value to a starting setpoint value and, in case of an established deviation, to correct a stored starting limiting value in accordance with the deviation, or means for controlling the fan are implemented to operate the fan at a fan performance corresponding to a stored starting limiting value, a device control unit is implemented to cause the measurement means to ascertain an actual limiting measured value which is representative of the flow velocity achieved at the set fan performance, and a storage unit is implemented to store the actual limiting measured value as the corrected limiting value. Furthermore, the present invention relates to a corresponding calibration method.

A cleaning booth has a handheld blaster, which emits a pulsed electromagnetic wave that is produced by a wave source. A fiber-optic cable feeds the wave from the source to the blaster. An operator can aim the blaster toward a part that rests on a movable table in the booth. When the operator actuates the wave source, a radiation beam from the blaster ablates anti-reflective coating residue from the part. The cleaning operation can be performed in a same room as the anti-reflective coating process equipment.

A cleaning booth has a handheld blaster, which emits a pulsed electromagnetic wave that is produced by a wave source. A fiber-optic cable feeds the wave from the source to the blaster. An operator can aim the blaster toward a part that rests on a movable table in the booth. When the operator actuates the wave source, a radiation beam from the blaster ablates anti-reflective coating residue from the part. The cleaning operation can be performed in a same room as the anti-reflective coating process equipment.

A machining system capable of preventing mist from leaking out from an enclosure to the outside. The machining system includes a first enclosure including an opening and configured to define a first space in which a workpiece is processed, a second enclosure arranged adjacent to the first enclosure and configured to define a second space communicating with the first space through the opening, wherein a robot which can advance to and retreat from the first space through the opening is installed in the second space, and a pressure adjustment device configured to increase a pressure in the second space higher than a pressure in the first space.