A flow control apparatus includes a flow control signal generation device for generating a DC control signal based on an audio signal and at least one proportional valve. The flow control signal generation device includes an audio receiving module, a filter rectifier module, a microprocessor and a proportional valve control signal generation module. The filter rectifier module generates at least one DC audio signal by filtering the audio signal provided by the audio receiving module. The microprocessor generates a plurality of period attenuated values based on the DC audio signal. The proportional valve control signal generation module filters the audio signal, attenuates the signal based on the period attenuated values, and then performs filtering and rectification processing to generate the DC control signal, such that the proportional valve may control the opening ratio of the proportional valve based on the DC control signal.

According to one aspect of the presently disclosed subject matter, there is provided a heating device including: top and bottom walls, front, rear and side walls extending therebetween, all forming therebetween an interior of said heating device, said front wall being made of a see-through material; and a back panel made of a ceramic non-fiber material, such as porcelain, and mounted to the bottom wall and the top wall so as to be spaced from the rear wall and so as to conceal the rear wall at least when seen through the front wall.

The present disclosure relates to products and methods for modifying the reflection of a light source in a fireplace and other products.

An apparatus having a substantially air-sealed, transparent, front through which a flame within the firebox may be viewed. The apparatus may include a burner configured to hold and burn a liquid fuel and positioned so as to cause a flame from the burning fuel to appear within the firebox. The liquid fuel may be ethanol. The apparatus may include an igniter that has a user-operated igniter control that may be operated by a user from outside of the firebox that, upon operation, causes the liquid fuel within the burner to be ignited. The apparatus may include an extinguisher that has a user-operated extinguisher control that may be operated by a user from outside of the firebox that, upon operation, causes the flame to be extinguished. The apparatus may include a fuel inlet located outside of the firebox, and a fuel channel between the fuel inlet and the burner. A fuel tank may also be provided.

A flame simulating assembly is provided with a reflected flickering light that includes only one light source. Light from the light source passes though a rotating flicker element onto an angled reflector, or mirror, that reflects light up onto a simulated fuel bed and the some of the light is reflected off of the flicker elements towards a flame screen to create a simulated flame. The clipping flicker elements creates a fluttering light effect due to the flicker elements intermittently dipping into the light path. This fluctuating light is reflected onto the logs and ember bed in front and creates a dancing effect, which simulates glowing embers.

A portable fire pit is provided that includes a frame, a support structure, and a mesh. The frame can include a plurality of upwardly extending rods and cross-bars extending between the upwardly extending rods. The support structure can include a plurality of supports having an upper wall, a base, and an aperture sized to receive an upwardly extending rod of the frame. The support structure can extend around a periphery of the frame. The mesh can include a base and a plurality of apertures sized to receive an upwardly extending rod of the frame

A flow control apparatus includes a flow control signal generation device for generating a DC control signal based on an audio signal and at least one proportional valve. The flow control signal generation device includes an audio receiving module, a filter rectifier module, a microprocessor and a proportional valve control signal generation module. The filter rectifier module generates at least one DC audio signal by filtering the audio signal provided by the audio receiving module. The microprocessor generates a plurality of period attenuated values based on the DC audio signal. The proportional valve control signal generation module filters the audio signal, attenuates the signal based on the period attenuated values, and then performs filtering and rectification processing to generate the DC control signal, such that the proportional valve may control the opening ratio of the proportional valve based on the DC control signal.

The invention relates to the field of electric heating appliances, specifically an electric fireplace providing a 3D flame effect, which comprises a housing, and inside, decorative firelogs, embers, a first light projector, a second light reflector, a first light-emitting source, a second light-emitting source and a flame-imaging device; wherein the first light projector comprises a first actuator and a revolving drum connected with an output shaft of the first actuator, wherein the revolving drum scatters the light emitted from the first light-emitting source onto the decorative firelogs and the embers; wherein the second light reflector reflects the light emitted from the second light-emitting source onto the flame-imaging device. The projection of both lights simulates a realistic 3D effect of a burning flame.

An apparatus and method for aesthetic enhancement of indoor and outdoor living spaces combines fire, bubbling water and light reflection to foster enjoyment and relaxation. Wall assemblies having glass panes are spaced apart from each other to provide a chamber to hold water separate from a burner assembly. Air pumped into the water forms air bubbles in the water. A LED light strip illuminates the water, bubbles and glass panes in changing colors.

An electric fireplace having a simulated dynamic wall includes a housing and a simulated charcoal. The housing has a combustion room therein. The simulated charcoal is placed inside the combustion room and located at a bottom of the combustion room. An inner wall of the housing is provided with simulated wall tiles. A top of the combustion room is provided with a ceiling lamp. A connecting wire of the ceiling lamp is connected to a main control board. The main control board is provided with a low-voltage DC stabilized power supply circuit, a main control unit, a light-emitting load, and a light signal feedback comparator capable of forming a signal feedback.