bed drying machine

Abstract

The invention relates to a bed quilt airing machine, in particular to a device for blowing high-pressure and high-temperature hot air into a warm air cushion through a warm air blower and heating and drying bedding and a mattress by hot air coming out of an air outlet hole in the surface of the warm air cushion in order to rapidly dry the bedding and the mattress. Specific to the problems of low drying speed and poor drying effect in the prior art, a brand new technical scheme capable of rapidly heating and maintaining a quilt over 100 DEG C, improving an existing technology from an evaporation mode to a boiling mode and increasing the drying speed by over 2 times is designed. Interaction relationships between parameters of the warm air blower and the warm air cushion are found through experiments, parameter boundary values are defined clearly, and meanwhile the concepts of pressure difference and average heat coverage are introduced into the parameters of the bed quilt airing machine for the first time. The bed quilt airing machine is mainly applied to household bedding and mattress drying and dehumidification, and is also suitable for rapid drying, disinfection, sterilization and peculiar smell removal of beds in hotel and restaurant guest rooms.

Description

technical field [0001] The invention relates to a quilt drying machine on a bed, specifically a device that uses high-pressure, high-temperature hot air fed by a heater to heat and dry the bedding mattress through the air outlet holes on the surface of the warm air pad, so as to dry the bedding mattress quickly. . Background technique [0002] The technical solution of the present application is a re-creation based on the technical solution of Reference Document 1 (Patent No.: ZL 2004 1 0085370.6). The substantive contribution of the comparative technical solution lies in the realization of the transformation of the drying heating method from heat conduction to the heat transfer method dominated by forced convection. By the three-dimensional omni-directional heating between the inner fibrous tissues, the heating process completely gets rid of the limitation of the low thermal conductivity of the air, and the improvement of the heating effect is also transformed from a linea...

AI Technical Summary

Problems solved by technology

[0003] The technical solution of Comparative Document 1 was proposed by the applicant based on the test data under the technical background at that time. Looking back today, the technical solution of Comparative Document 1 has the following defects: First, the warm The parameters of the wind pad are only appearance characteristics. Theoretically, the decisive factor for this substantial change is the wind pressure distributed on the air outlet holes on the surface of the warm air pad. Specifically, when the wind pressure distributed on the air outlet holes on the surface of the warm air pad When the pressure is large enough, when there is a continuous, stable and measurable pressure difference between the inside and outside of the bedding to be dried, forced convection can be realized. The greater the pressure difference, the more obvious the effect of heat transfer by forced convection.

If the wind pressure of the air outlet holes distributed on the surface of the warm air pad is not enough to allow the hot air to penetrate the inner tube of the quilt, not only the forced convection cannot be realized, but also the internal temperature of the heater will rise sharply due to the inability to discharge the heat generated in time. Cause the thermal protection device to operate frequently until the machine fails and cannot continue to work

In addition, this abnormal use situation also increases the running resistance of the motor. If the motor is overloaded for a long time, the temperature rise of the motor will exceed the design level standard, and the temperature of the winding will rise rapidly, causing irreversible damage to the motor.

Secondly, in the actual production, how to choose the best within the range limited by the parameters of the heating pad, the technical solution of the comparison document 1 is completely based on experience for actual testing. This kind of testing is not only expensive, but also full of uncertainty.

Third, the technical scheme of Comparative Document 1 only clearly limits the parameters of the heater pad, and does not involve the parameters of the heater used in conjunction with the heater pad. In actual use, the heater is the source of hot air and the heater pad It is a heat sink, the heater and the heater pad must be used together, the importance of the two is equally important

Fourth, the warm air pad in the technical proposal of Comparative Document 1 is sewn from double-layer textile fabrics with airtight properties. The textile fabrics with airtight properties need to be coated. The coating process belongs to the textile finishing technology. The function is to improve the performance of the fabric. The requirements for the coating effect are different, and the processing cost varies greatly. The low-cost coating processing fee accounts for a negligible proportion of the total cost of the heating pad, and the high-demand coating processing cost is even higher than the heating pad. For the cost of the air cushion fabric, there is no quantitative index for the detection of the airtight performance of the fabric in the technical scheme of the comparison document 1

Fifth, from the perspective of the practical application of the technical solution in Comparative Document 1, the power of the shaded pole motor was already close to the limit value under the premise of meeting the design level safety standards, which means that the air volume and wind speed output by the heater have no longer To improve the space, because the heater shell and internal components are mostly made of plastic, and the heated mattress and bedding are also flammable textiles, so the temperature of the hot air blown by the heater must be strictly limited. These factors lead to the heating of the heater The power is restricted, and it is close to the safety limit, so there is no room for improvement

Images