8results about How to "Improve heating performance" patented technology

The invention relates to the technical field of heat pump systems, in particular to a heat pump intermediate heat exchanger air supply system and a control method thereof.A REFPROP function is introduced according to the evaporation pressure, the condensation pressure, the compressor frequency, the refrigerating capacity and other parameters of operation of a heat pump unit to obtain all state parameters of the whole two-stage compression process of a unit compressor, such as the primary compression end pressure and the enthalpy value; and according to the deviation value range of the optimal intermediate pressure ratio of the compressor and the air supply ratio of the main path circulation, the air supply amount of the main path circulation of the heat pump unit is determined. By adjusting the opening degree of the auxiliary path electronic expansion valve, the auxiliary path outlet pressure value of the unit is close to the optimal middle pressure of the compressor. By means of air supply control, it is guaranteed that in the operation process of the unit, the opening degree of the auxiliary electronic expansion valve can be controlled according to the calculated deviation value of the air supply ratio of the heat pump system and the intermediate pressure ratio of the compressor, the air supply pressure of the unit is the optimal intermediate pressure, and therefore the optimal heating performance of the unit is achieved.

This utility model discloses a heating furnace device with a heat treatment atmosphere control structure, belonging to the technical field of heating furnaces. It includes a combustion structure comprising a fuel tank and a burner. A furnace body structure is installed on top of the fuel tank, including a furnace wall and a cover plate. An atmosphere control inlet structure is connected to the outer wall of the fuel tank, comprising an inlet pipe and a conversion box. One end of the inlet pipe is connected to a diffusion structure. A heating structure is installed inside the fuel tank, including an airflow equalization plate, a heater, and vortex guide ribs. A detection component is installed on one side of the furnace wall, comprising a slide rail, a slider, and a gas concentration detector. By setting a diffusion structure on the outside of the furnace wall, the gas is transported and diffused in a laminar flow from bottom to top, enhancing the uniformity of gas flow and improving the heating effect.

The invention discloses a heating device for a fresh air system, and relates to the technical field of fresh air, the heating device for the fresh air system comprises a fresh air fan, one side of the fresh air fan is fixedly connected with an outlet pipe, one end of the outlet pipe is fixedly connected with a connecting pipe A, and one side of the connecting pipe A is provided with a uniform heating mechanism; by arranging the uniform heating mechanism, when air passes through the multiple heating grooves in the inner wall of the heat conduction cylinder, due to the fact that the area of the inner walls of the heating grooves is large and the number of the inner walls of the heating grooves is large, the air is fully heated and then exhausted, the air heating effect is completed, and more uniform heating and air circulation of the air are completed through the heating grooves in the closed heat conduction cylinder.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

The utility model belongs to the technical field of vacuum crystallization furnace equipment, and particularly relates to a vacuum crystallization furnace which comprises a furnace body, a cover plate is arranged at the top of the furnace body, and a bottom plate of the furnace body and the cover plate are both communicated with a vacuum pipe and a plurality of backfilling pipes; the heating part is arranged between the bearing part and the bottom plate of the furnace body, and the heating part is suitable for emitting heat to heat and crystallize the battery piece; the vacuum pipes are arranged to vacuumize the cavity from the top and the bottom of the furnace body at the same time, the vacuumizing effect is uniform, and the efficiency is high; nitrogen is introduced through the backfilling pipe to supplement gas to the cavity from the top and the bottom of the furnace body at the same time, so that the air pressure of the cavity is stable, and the drying progress is accelerated; by arranging the heating part, the heating mode of the heating part can be infrared heating, the crystallization of the battery piece coated with liquid medicine can be efficiently realized by heating the surface of the battery, a special crystallization cavity does not need to be additionally arranged, the use volume of the cavity is reduced, and the cost is reduced.

The present invention relates to the field of PTC composite materials, and more specifically, it relates to a PTC composite material for a heating plate and a preparation process thereof. A preparation process for a PTC composite material for a heating plate comprises the following steps: rubber mixing processing, polymer matrix and conductive filler mixing processing, modified silica filler preparation and addition, graphene grafting modification and doping mixing. The present invention mixes and fuses mixed rubber, high-density polyethylene, mixed masterbatch, ethylene-octene copolymer and modified silica filler to obtain a composite PTC material with good PTC effect stability and flexibility, and, by doping with modified graphene, the mechanical properties and PTC strength of the composite PTC material can be further improved to obtain a flexible PTC composite material with good PTC strength, PTC effect temperature resistance and flexibility.

The application provides a heat exchange structure, an air conditioner and a control method. The heat exchange structure comprises: an outdoor unit arranged outdoors, the outdoor unit comprising a compressor, a defrosting pipeline arranged on the compressor; an outdoor heat exchanger arranged in the outdoor unit, the outdoor heat exchanger being connected with the defrosting pipeline, the defrosting pipeline being connected with the compressor, so that fluid in the compressor flows into the outdoor heat exchanger; a heating pipeline, one end of the heating pipeline being connected with the outdoor heat exchanger, the other end of the heating pipeline being connected with the compressor, so that fluid in the outdoor heat exchanger flows into the compressor, the heating pipeline being provided with a heating component for heating fluid; the heating pipeline is provided with a gas-liquid separator for separating gas and liquid; a heat exchange device, the heat exchange device being connected with the heating pipeline and the defrosting pipeline, so as to exchange heat between fluid in the heating pipeline and fluid in the defrosting pipeline. The heat exchange structure solves the problem of liquid accumulation in the gas-liquid separator, improves the amount of refrigerant circulation during heating, reduces the defrosting frequency of the unit, and improves the heating use comfort.

The invention discloses a polyester fiber / polyesteramide fiber multilayer composite warm-keeping flocculus which is composed of an upper-layer fiber net, a middle-layer fiber net and a lower-layer fiber net, the upper-layer fiber net and the lower-layer fiber net are both prepared from a first fiber net, and the middle-layer fiber net is formed by stacking and reinforcing the first fiber net and a second fiber net. The production process comprises the following steps: 1, preparing an upper-layer fiber web and a lower-layer fiber web, 2, preparing a middle-layer fiber web, and laminating and compounding the first fiber web and the second fiber web; 3, fiber web stacking and reinforcing, wherein first fiber webs are stacked on the upper surface and the lower surface of the middle-layer fiber web respectively, and needling reinforcing is conducted after stacking is completed; and carrying out hot air bonding reinforcement under the condition of 160 DEG C, trimming, sterilizing, rolling and packaging to obtain the polyester fiber / polyesteramide fiber multi-layer composite warm-keeping flocculus. The moisture absorption, moisture conductivity and air permeability of the flocculus are improved, and the overall heat preservation performance of the flocculus is enhanced.