Temperature-adjustable warm air cushion

Abstract

A flow guide opening is additionally formed in the surface of a warm air cushion body, the flow guide opening and hundreds to thousands of air outlet holes formed in the surface of the warm air cushion body in the later stage act together, the flow of hot air entering the warm air cushion is changed, and the hot air circulation path trend is guided; the temperature difference between the end, close to the warm air blower, of the warm air cushion and the end, away from the warm air blower, of the warm air cushion is adjusted, the temperature rising range of the warm air cushion body is adjusted, and synchronous rising of the overall temperature of the warm air cushion body is guaranteed. The flow guide opening is changed from being completely closed to being completely opened, the opening and closing size can be freely adjusted and set by a user according to the requirements of environment temperature, heat-resisting temperature of bedding articles, moisture prevention, mildew prevention, peculiar smell removal in rainy seasons, heating in winter, high-temperature disinfection, sterilization and acarid removal and the like, and all use scene requirements are covered with one warm air cushion.

Description

Technical Field

[0001] This invention relates to an adjustable warm air mat whose heating temperature can be set by the user. Specifically, it is based on constant temperature heating warm air mat technology, and adds a guide port to the surface of the warm air mat. By adjusting the opening or closing range of the guide port, the flow rate and circulation path of the hot air entering the warm air mat are changed and guided, thereby adjusting and balancing the temperature difference between the end of the warm air mat near the heater and the end far from the heater, so as to achieve the purpose of freely adjusting the temperature rise of the warm air mat. Background Technology

[0002] The technical solution of this invention application is a re-creation based on the technical solutions of prior art document 1 "warm air pad" (patent number: ZL 2004 10085370.6) and prior art document 2 "bed drying machine" (patent number: ZL 2016 1 1024847.9).

[0003] Prior art document 1, "Warm Air Pad" (Patent No.: ZL 2004 1 0085370.6), achieves a shift in heating method from heat conduction to forced convection. The drying speed increases linearly with increasing temperature. However, because the heating temperature is below 100℃, the drying speed is directly affected by the relative humidity of the air. The drying index in weather forecasts is directly related to the relative humidity of the air. When the temperature is below 100℃, water vapor diffuses from areas of high relative humidity to areas of low relative humidity. If the relative humidity of the air reaches saturation, water vapor diffusion in the drying process immediately stops, and drying cannot be completed. In this case, the relative humidity of the air directly affects the drying speed.

[0004] The technical solution of Comparative Document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), can quickly heat the bed and maintain it above 100℃. The drying effect is not affected by the relative humidity of the air. It realizes "boiling mode drying and steaming temperature to remove mites". The drying speed increases exponentially. You can dry the moisture in your quilt and mattress quickly and thoroughly at home without leaving the house or leaving the bed. It is not limited by climate conditions or time and space.

[0005] 100℃ is the boiling point of water, the critical temperature at which water changes from a liquid to a gaseous state. When the temperature exceeds 100℃, water vapor evaporation follows different physical laws. Under standard atmospheric pressure, liquid water turns into water vapor, causing a sudden increase in pressure and a 1700-fold increase in volume. The volume of water vapor absorbed by one quilt after evaporation would require 1700 quilts of the same type to reach equilibrium with atmospheric pressure again. This means that, theoretically, after drying at 100℃, only 1 / 1700 of the original water vapor should remain in the quilt, while the remaining 1699 / 1700 will evaporate and leave the quilt.

[0006] For ease of understanding, we have simplified the drying principle of the technical solution in Comparative Document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), into the following formula:

[0007] Heating pad temperature = Initial ambient temperature + Heating pad temperature rise

[0008] The heating power of a heater directly affects the "temperature rise of the heating pad". "Initial ambient temperature" is a climate concept, and it is closely related to the region and season.

[0009] Assuming the heater's rated power is 2000W and the heating pad's temperature rise is 80℃, taking January 20, 2024 (the Great Cold solar term) as an example, the heating temperatures of the same model of bed drying machine in different regions are as follows:

[0010] coordinate Guangzhou Guiyang Chengdu Changsha Shanghai Nanjing highest temperature 21℃ 9℃ 11℃ 4℃ 7℃ 4℃ Temperature rise 80℃ 80℃ 80℃ 80℃ 80℃ 80℃ cushion temperature 101℃ 89℃ 91℃ 84℃ 87℃ 84℃

[0011] In actual heating processes, the factors affecting heating effects are far more complex than in ideal laboratory conditions. Temperature differences generate convection; the greater the temperature difference, the faster the convection, and the faster the heat dissipates from the hotter object. With a heating pad at 100℃, a room with a lower ambient temperature loses heat faster and more heat than a room with a higher ambient temperature. A bed drying rack that can heat blankets to over 100℃ in Guangzhou might struggle to reach 80℃ in Shanghai and Nanjing. Conversely, a bed drying rack that can heat blankets to over 100℃ in Shanghai might cause the electronic thermometer to overheat and the temperature to spike above 130℃ in Guangzhou, frequently triggering overheat protection and preventing continuous heating.

[0012] The influence of seasons is similar to that of temperature differences between the north and south. Taking Guangzhou in 2023 as an example: winter (January 1), spring (March 1), and summer (June 1).

[0013] Location: Guangzhou January 1 March 1 June 1 highest temperature 18℃ 26℃ 38℃ Temperature rise 80℃ 80℃ 80℃ cushion temperature 98℃ 106℃ 118℃

[0014] A bed drying rack that can heat blankets to over 100℃ in hot weather will struggle to reach 100℃ in winter, even with double the heating time. Lower winter temperatures require more heat to compensate for heat loss from the blankets and mattress. A bed drying rack that can heat blankets to over 100℃ in winter will see temperatures rise above 130℃ in hot weather, frequently triggering overheat protection and preventing sustained heating.

[0015] The product combination of the bed drying machine produced according to the technical solution of document 2 "Bed Drying Machine" (patent number: ZL 2016 1 1024847.9) continues the product combination form of document 1 "Heating Mat" (patent number: ZL 2004 1 0085370.6): it consists of a heater (rated power 2200W) + a heating mat (matching the width of the mattress, available in 6 sizes: 2 meters wide, 1.8 meters wide, 1.5 meters wide, 1.35 meters wide, 1.2 meters wide, and 1 meter wide).

[0016] In the technical solution of Comparative Document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), "temperature rise" specifically refers to the temperature rise of the heating pad. After the heater is manufactured, the main factors affecting the "temperature rise," such as motor parameters, impeller size, and rated power of the heating element, are fixed. Indoor air is drawn into the heater, heated by the internal heating element, and then blown into the heating pad. At this time, the parameters of the heating pad's air outlet are also fixed values. Under ideal laboratory conditions where external factors are ignored, the temperature rise of the heating pad is also a relatively fixed value. The "initial ambient temperature" varies due to external factors such as region and season. Theoretically, the "temperature rise of the heating pad" needs to be adjusted accordingly with changes in the "initial ambient temperature" to ensure that the "temperature of the heating pad" remains stable in complex usage environments. Since the temperature rise of the heating pad in the technical solution of the prior art document 2 "Bed Drying Machine" (Patent No.: ZL 20161 1024847.9) is a relatively fixed value, according to the formula: heating pad body temperature = initial ambient temperature + heating pad temperature rise, the "heating pad body temperature" will inevitably fluctuate greatly with the change of the "initial ambient temperature".

[0017] The product manufactured based on the technical solution of Comparative Document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), has exceeded buyers' expectations in terms of drying speed and effect since its launch. It has received rave reviews on the Internet, and sales have increased exponentially. Many traditional media outlets and online bloggers have spontaneously recommended it. The repurchase rate of old customers is very high. Even mothers with dust mite allergies have consulted us for advice and purchase based on their doctors' recommendations. The bed drying machine has become a standard feature of many well-known chain hotels, used to solve the problems of dampness, mold, and odor in guest room beds and storeroom linens. The usage period has extended from autumn and winter to spring and summer rainy seasons, and the usage areas have expanded from the middle and lower reaches of the Yangtze River to all parts of the country. In terms of functional needs, it has expanded from winter heating to dehumidification, disinfection, sterilization, mite removal, and odor removal in the rainy season. As a result, the inherent defects of fixed drilling parameters and constant temperature heating pads have also been exposed by market feedback: the heater overheats, causing the machine fuse to blow; the plastic air outlet of the heater overheats and deforms; the plastic shell overheats and deforms; and the plastic produces an unpleasant odor when baked at high temperatures. In another extreme case, in areas where the winter temperature is consistently in the single digits, the heating time is doubled, but it is still impossible to reach the temperature of 100°C.

[0018] In response to the increasing problem of overheating causing blown fuses, melted air vents, and deformed casings in space heaters, we developed a safety protection device and applied for and obtained an invention patent, "Safety Protection Device for Fan-Type Heaters" (Patent No.: ZL 2015 1 0163242.7). This device can anticipate abnormal use and unexpected situations, immediately cutting off the power supply to the heating element while continuing to blow cold air to rapidly cool the internal components before cutting off the power supply to the entire unit. Until the cause of the malfunction is resolved, the space heater remains in standby alarm mode and will not automatically resume operation. If a malfunction alarm is detected, simply unplug the power cord, eliminate any causes of air blockage or poor ventilation, plug the power cord back in, and turn it on to restore normal operation. No disassembly or replacement of any components is required. However, this technology does not fundamentally solve the overheating problem, and frequent activation of the overheat protection can lead to a poor user experience. With increased sales, the number of after-sales inquiries and returns / exchanges related to the overheat protection issue has significantly increased. In order to find a solution, we added new models to the existing 2200W heater, reducing the heating power to 2000W and 1800W.

[0019] model JF-01 JF-20 JF-18 Rated power 2200W 2000W 1800W

[0020] Adjusting the heating power of a single heater is limited by physical space, production equipment, and processing technology. Furthermore, the red line of safety standards requiring a safe distance between the heating element and the heating element cannot be crossed, limiting the potential for improvement. In practice, adding more models is the only option. However, without sufficient market demand, adding models only increases production costs without achieving a return that covers those costs. In actual sales, the initial market only offered a 2200W heater model; now, 2000W heaters account for over 80%, and 1800W heaters account for over 10%. The early 2200W heater has become almost negligible, meaning that producing a batch of 2200W heaters might take several years to sell, resulting in inventory backlog.

[0021] After that, we turned our attention to adjusting the parameters of the heating pad.

[0022] Similar to the heating principle of an electric water faucet, with the heating element power remaining constant, when the faucet is fully open, the water flow is at its maximum, the water temperature rise at the outlet is small, and the water temperature is low; as the faucet is slowly tightened, the water flow decreases accordingly, the water temperature rise at the outlet increases accordingly, and the water temperature rises accordingly.

[0023] By adjusting the number and area of ​​the air outlet holes on the surface of the heated air pad, and simulating the use of a bed drying machine under different ambient temperatures, three representative groups of heated air pad air outlet parameters (A, B, and C) were selected. These parameters were then combined with heated air heaters of different heating powers, and perfect technical solutions were found for each segmented market with a certain scale.

[0024] The heated air pads are divided into three types based on the temperature of the heating zone: Type A, Type B, and Type C.

[0025] The three heated mattresses can be paired with three different models of heaters to create bed drying racks with nine different heating temperature ranges, meeting the personalized needs of buyers. Buyers can choose the appropriate bed drying rack based on factors such as their local climate, seasonal changes, indoor temperature differences, and the material, thickness, quantity, and age of their bedding.

[0026] Type A heated mattress [heating temperature 110-130℃] is suitable for users whose indoor temperature is consistently below 10℃ in winter. It is suitable for winter heating, drying, and dehumidification, and for users who need disinfection, sterilization, and mite removal. High temperatures are not suitable for latex mattresses, silk comforters, or down comforters. It is not suitable for use in high-temperature areas or during high-temperature seasons.

[0027] The test data for the 1.8-meter wide A-type heating pad combined with 2000W and 1800W heaters are as follows:

[0028] JF-20 / 1800M-A type JF-18 / 1800M-A type Bedroom temperature 12℃ 10℃ On the heated mat Two cotton quilts (28 jin) are needed. Two cotton quilts (28 jin) are needed. Under the warm air pad Two cotton quilts (28 jin) were laid out. Two cotton quilts (28 jin) were laid out. Drying time 120 minutes 120 minutes Temperature of the four corners of the quilt and mattress Top left corner: 130℃, 121℃; Top right corner, Bottom left corner: 118℃, 115℃; Bottom right corner Top left corner: 117℃, 113℃; Top right corner, Bottom left corner: 107℃, 111℃; Bottom right corner

[0029] Model B warm air mattress [heating temperature 100-120℃] is a universal type and the main model recommended for winter. It provides heating in winter, suitable for families with indoor temperatures below 20℃; it dehumidifies during the rainy season, suitable for use during humid periods such as the humid south wind season and the plum rain season, killing bacteria, fungi, viruses, mites, scabies mites, bedbugs, fleas, and other harmful pathogens; it is suitable for quickly drying, disinfecting, sterilizing, dehumidifying, removing mites, and eliminating odors in hotel and guesthouse mattresses and quilts; it is suitable for drying and dehumidifying cotton, silk, down, wool, and synthetic fiber quilts and blankets; it is also suitable for quickly drying and dehumidifying Simmons mattresses, palm fiber mattresses, tatami mattresses, etc. It is not suitable for latex mattresses.

[0030] The test data for the 1.8-meter wide Model B heating pad combined with 2000W and 1800W heaters are as follows:

[0031] JF-20 / 1800M-B type JF-18 / 1800M-B type Bedroom temperature 15℃ 16℃ On the heated mat Cover with 3 cotton quilts [42 jin] Two goose down comforters (9.8 catties) Under the warm air pad Two cotton quilts (28 jin) were laid out. Two cotton quilts (28 jin) were laid out. Drying time 120 minutes 120 minutes Temperature of the four corners of the quilt and mattress Top left corner 108℃ 108℃ Top right corner Bottom left corner 104℃ 106℃ Bottom right corner Top left corner 91℃ 90℃ Top right corner Bottom left corner 85℃ 85℃ Bottom right corner

[0032] Model C heated mattress [heating temperature 80-100℃] is the main model recommended for summer. It is suitable for families with heating equipment in winter, where the indoor temperature is around 20℃; it is also suitable for high-end hotel rooms with constant temperature all year round, for quickly drying, disinfecting, sterilizing, dehumidifying, mite-removing, and deodorizing mattresses and quilts; it is suitable for quilts made of silk, goose down, etc., as well as high-end brand Simmons mattresses, latex mattresses, latex pillows, foam mattresses, and other mattresses and bedding that are not heat-resistant.

[0033] The test data for the 1.8-meter wide C-type heating pad combined with 2000W and 1800W heaters are as follows:

[0034] JF-20 / 1800M-C type JF-18 / 1800M-C type Bedroom temperature 25℃ 28℃ On the heated mat Two goose down comforters (9.8 catties) Two silk quilts (10.4 catties) are used for this purpose. Under the warm air pad Two cotton quilts (28 jin) were laid out. Two cotton quilts (28 jin) were laid out. Drying time 120 minutes 120 minutes Temperature of the four corners of the quilt and mattress Top left corner 97℃ 95℃ Top right corner Bottom left corner 93℃ 93℃ Bottom right corner Top left corner 93℃ 90℃ Top right corner Bottom left corner 87℃ 86℃ Bottom right corner

[0035] The perforation parameters for the three heater pads A, B, and C above are data obtained under ideal laboratory conditions. Real-world applications are much more complex. For example, in Guangdong, winter cold waves can cause temperatures to plummet to single digits, only to quickly recover to above 20 degrees Celsius. In Hainan and Guangdong, most households only have a single 6- or 8-pound cotton quilt in winter. These quilts are thin and highly breathable; after heating, the plastic film used to observe the drying effect floats and slides onto the floor, and even after several hours of heating, the temperature rarely reaches 100°C. In winter, if a household doesn't have heating equipment, they have to sleep under several heavy quilts weighing over ten kilograms each. These quilts are thick, damp, hardened, and not breathable, causing the heater to overheat and alarm after only ten minutes of operation. In the same area, the temperature can differ by more than ten degrees Celsius between households with and without heating equipment. Since the air outlet of the heater pad is pre-made at the factory, users are helpless. The only remedy is to replace it with a heater pad that has a higher (lower) temperature or a heater with a larger (smaller) wattage. This results in a significant proportion of after-sales returns and exchanges.

[0036] If the technical solution of prior art document 1, "Heating Pad" (Patent No.: ZL 2004 1 0085370.6), is experience-oriented, and the technical solution of prior art document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), is technology-oriented, then this invention can be said to be user-oriented.

[0037] Analogous to the camera industry, manufacturers equip various camera models with standard lenses, zoom lenses, telephoto lenses, wide-angle lenses, etc., and have launched perfect technical solutions for each market segment.

[0038] From a user's perspective, the average consumer won't buy all the professional accessories and equipment offered by a vendor just because they need to take photos, and they might not even even consider doing so. What 99% of ordinary consumers really need is a smartphone that allows them to take great photos simply by swiping and pinching their fingers on the touchscreen.

[0039] Similarly, the idea that users of bed drying racks should purchase different wattage heaters and multiple heating pads (A, B, and C) with different air outlet parameters for different usage scenarios—winter and summer, cotton quilts and silk quilts and down quilts, latex mattresses and Simmons mattresses, drying and dehumidification, and winter heating—is merely wishful thinking on the part of the sellers. The reality is that buyers often struggle to choose between different wattage heaters and heating pads with different parameters (A, B, and C), inevitably leaving them with the unfortunate situation of not being able to have their cake and eat it too.

[0040] In the technical solution of prior art document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), there are 9 SKU combinations for a 1.8-meter wide mattress: JF-01 / 1800M-A, JF-01 / 1800M-B, JF-01 / 1800M-C, JF-20 / 1800M-A, JF-20 / 1800M-B, JF-20 / 1800M-C, JF-18 / 1800M-A, JF-18 / 1800M-B, and JF-18 / 1800M-C. Based on 6 common market mattress sizes: 2 meters, 1.8 meters wide, 1.5 meters wide, 1.35 meters wide, 1.2 meters wide, and 1 meter wide, 54 SKU combinations can be created. Summary of the Invention

[0041] The purpose of this invention is to design an adjustable warm air pad. An air guide is added to the surface of the pad, and this air guide, along with hundreds to thousands of air outlets processed later on the pad surface, works together to change the flow rate of hot air entering the pad and guide the circulation path of the hot air. This adjusts and balances the temperature difference between the end of the pad near the heater and the end far from the heater, controlling the temperature rise of the pad and ensuring that the overall temperature of the pad rises synchronously and evenly.

[0042] The opening can be fully closed or fully open, and the size of the opening and closing can be freely adjusted by the user according to the ambient temperature, the heat resistance temperature of the bedding, and the needs of moisture prevention, mildew prevention and odor removal in the rainy season, heating in winter, high-temperature disinfection and sterilization to remove mites, etc. The heating temperature of the warm air pad can be set, and one warm air pad can cover all usage scenarios.

[0043] In order to achieve the above-mentioned objectives, the applicant provides the following technical solution.

[0044] The technical solution of this invention divides the air outlet parameters affecting the temperature rise of the heated air pad into two parts. One part uses the perforation parameters of the heated air pad (high-temperature type A or general type B) from the technical solution of prior art document 2, "Bed Drying Machine" (patent number: ZL 2016 1 1024847.9), which are constant values ​​that cannot be adjusted later. The new part exists in the form of an "air guide," which is an adjustable variable. Users can freely adjust the opening and closing size of the "air guide." After the two parts are dynamically combined, the temperature rise of the heated air pad in prior art document 2, "Bed Drying Machine" (patent number: ZL 2016 1 1024847.9), will be reduced. In the technical solution (1024847.9), the constant temperature heating pad has been changed to a user-adjustable temperature heating pad. One heating pad can be used safely all year round: it can meet the heating needs of the cold and humid winters in the south, and can also be used to remove moisture and prevent mold during the spring and summer rainy seasons, replacing outdoor air drying. It can also be used for high-temperature disinfection, sterilization, mite removal, and odor removal. Users can freely adjust the temperature according to the heat resistance of the mattress and quilt material. One heating pad can meet the heating and drying needs of the whole family for different types of quilts and mattresses. The adjustable temperature heating pad is no longer affected by geographical and regional climate conditions. It can flexibly adjust the temperature rise according to the climate conditions of the environment, ensuring that the temperature will not be too low in low-temperature areas and will not overheat in warm areas and high-temperature seasons. The adjustable temperature heating pad also makes it possible for hotels, guesthouses, and housekeeping service industries to use the product at the optimal temperature in different seasons.

[0045] The adjustable warm air cushion may have one or multiple air inlets.

[0046] The air inlet on the adjustable warm air pad is located at the edge of the area where the measured temperature of the warm air pad is relatively low, making it convenient to adjust the opening and closing of the air inlet.

[0047] The air vents on the adjustable warm air mat are completely closed. When the indoor ambient temperature is between 10℃ and 20℃, the mat is heated for 2 hours under simulated home use conditions, and the highest measured temperature of the mat does not exceed 140℃. This avoids damage to the plastic parts of the heater and bedding caused by excessively high temperatures.

[0048] The air vents on the adjustable warm air pad are completely closed. When the indoor temperature is below 10°C, the pad is heated for 2 hours under simulated home use conditions. The measured average temperature of the four corners of the warm air pad is not less than 100°C, which meets the needs of families in the cold and humid south during winter who do not use heating equipment.

[0049] With the air vents on the adjustable warm air mat fully open, the mat is heated for 2 hours under simulated home use conditions. The measured average temperature rise of the four corners of the warm air mat relative to the ambient temperature is over 20°C, which can quickly dry heat-sensitive bedding in hot and dry weather.

[0050] The adjustable warm air cushion can be opened and closed using a zipper, Velcro, or other convenient methods such as snaps or a vent valve.

[0051] The adjustable warm air pad has perforations on all four sides. By passing a rope or strap through the perforations, the warm air pad can be tied and fixed to the mattress or bed frame, and the height of the warm air pad's inflation and the extent of its contraction can be controlled during operation.

[0052] Alternatively, webbing can be sewn onto the perforated positions on all four sides of the heating pad to replace the perforations, thereby fixing the heating pad to the mattress or bed frame and controlling the height of the heating pad's inflation and the extent of its contraction during operation.

[0053] The beneficial effects of the technical solution of this invention can be viewed from both the user's and the merchant's perspectives.

[0054] From the user's perspective, the technical solution of this invention, based on the "perfect" technical solution already provided in prior art document 2, "Bed Drying Machine" (patent number: ZL2016 1 1024847.9), fills in the "flawless" gap, much like the camera function of a smartphone. It eliminates the user's dilemma about what heating power of a heater to buy, and the hesitation about choosing between parameters A, B, and C for a heated mattress. A simple combination of a universal heater and an adjustable warming mat can meet all daily needs, allowing you to stay indoors all year round, with your bedding always on. The warming mat's temperature can be freely adjusted according to the ambient temperature, meeting the requirements of heating above 100℃, "boiling mode drying," and "steaming temperature mite removal." The heating temperature can also be selected based on the heat resistance of the quilt (cotton, silk, down, etc.) and mattress (Simmons, latex, etc.), and can be increased to 110℃-130℃ for rapid and thorough disinfection, sterilization, mite removal, and odor elimination. Without increasing purchase costs, users get the best of both worlds, achieving excellent value. In terms of user experience, there will be no more issues such as the heater not reaching the expected temperature, excessively high temperatures causing frequent overheating alarms, deformation of the heater's plastic parts due to overheating, unpleasant odors from the heated plastic parts, or damage to bedding due to excessive heat. The technical solution of this invention fixes the heating pad to the mattress through perforation, controls the height of the heating pad's inflation and the extent of its contraction during operation, and ensures that the heating pad fully covers the mattress, causing the entire mattress to heat up synchronously. Even if the user's blanket is thin, the heating pad will not shrink significantly and fail to fully cover the mattress, so there is no need to worry about the edges of the mattress not drying.

[0055] From a retailer's perspective, the number of SKU combinations for a bed drying machine corresponding to a single mattress size has been reduced from nine in the prior art document 2 "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9) to only one in this invention. A single universal heater and an adjustable warming pad are sufficient to cover all usage scenarios of the 2200W, 2000W, and 1800W heaters with A, B, and C air outlet parameters found in the prior art document 2 "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9). Furthermore, the number of SKU combinations for bed drying machines corresponding to six standard mattress sizes has been significantly reduced from 54 in the prior art document 2 "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9) to only 6 in this invention. The significant reduction in SKU combinations directly results in a substantial increase in large-scale production efficiency, reduced error risk, lower production costs, reduced inventory costs, and improved capital turnover efficiency. Technically, it completely eliminates returns and after-sales repair issues caused by deformation or damage to machine plastic parts due to overheating. In the technical solution of Comparative Document 2, "Bed Drying Quilt Machine" (Patent No.: ZL 2016 1 1024847.9), the height and extent of the heating pad's inflation are related to the number and weight of the quilts covering it. If the quilts are thin and few in number, the heating pad inflates significantly, resulting in large shrinkage in length and width. In this case, a larger-sized heating pad can be purchased to remedy the situation. If the quilts are thick and numerous, the heating pad inflates less, resulting in less shrinkage in length and width, allowing for the selection of a heating pad that matches the mattress size. The technical solution of this invention uses perforations to fix the heating pad to the mattress, controlling the height and extent of the heating pad's inflation and shrinkage during operation, which can significantly reduce the return rate caused by the heating pad's size becoming unsuitable after inflation and shrinkage. Attached Figure Description

[0056] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0057] Figure 1 This is a schematic diagram of the inner liner structure of an adjustable warm air cushion with two airflow outlets.

[0058] Figure 2 This is a schematic diagram of the inner liner structure of an adjustable warm air cushion with a flow guide port. Detailed Implementation

[0059] Implementation method one, Figure 1According to the technical solution of Comparative Document 2, "Bed Drying Machine" (Patent No.: ZL 2016 1 1024847.9), a 2000W rated power heater and a 1.8m wide x 2m long heating pad are selected. The heating pad is connected to the heater through an air inlet 3. Air outlets 2 are machined on the inner surface of the heating pad. The number and area of ​​each outlet 2 require repeated sampling and testing. The heating pad should be continuously heated until its surface temperature remains dynamically stable at 120℃-140℃. Two 10cm long metal zippers are sewn onto the far end of the air inlet of the heating pad to form a guide port 1. The location of the guide port 1 needs to be determined through actual testing, selecting an area where the temperature of the heating pad body is relatively low. Perforations 4 are made on the four sides of the heating pad using a sew-on-a-clothes eyelet punching machine. There are four perforations 4 on each side. A rope is threaded through the perforations 4 to securely tie the heating pad to the mattress, reducing the height of the heating pad's inflation and the extent of its contraction during operation.

[0060] The following is Figure 1 Test data after the heater pad was completed (heater unit is located in the upper right corner):

[0061] Heating power Indoor temperature Zipper status Temperature of the four corners of the heating pad 20 million for winter season 21.2 Completely closed Top left corner: 131.4℃, 136.1℃; Top right corner, Bottom left corner: 120.4℃, 110.5℃; Bottom right corner 20 million for winter season 21.7 Open 1 / 3 Top left corner: 121.6℃, 122.7℃; Top right corner, Bottom left corner: 117.7℃, 117.7℃, Bottom right corner 20 million for winter season 20.9 Open 1 / 2 Top left corner: 109.6℃, 107.9℃; Top right corner, Bottom left corner: 107.9℃, 108.9℃; Bottom right corner 20 million for winter season 22.9 Fully open Top left corner: 90.3℃, 88.8℃; Top right corner, Bottom left corner: 88.9℃, 89.0℃; Bottom right corner 10 million for summer season 20.2 Completely closed Top left corner: 79.1℃, 81.5℃; Top right corner, Bottom left corner: 74.9℃, 71.6℃; Bottom right corner 10 million for summer season 21.0℃ Fully open Top left corner: 57.6℃, 56.2℃; Top right corner, Bottom left corner: 57.5℃, 58.0℃; Bottom right corner

[0062] Implementation Method Two Figure 2 According to the technical solution of reference document 2, "Bedtimer for Drying Bedding" (Patent No.: ZL 2016 1 1024847.9), a 2000W rated power heater and a 1.2m wide x 2m long heating pad are selected. The heating pad is connected to the heater through an air inlet 3. Air outlets 2 are machined on the inner surface of the heating pad. The number and area of ​​each outlet 2 need to be repeatedly tested and sampled. The heating pad should be continuously heated until its surface temperature remains dynamically stable at 120℃-140℃. A 12cm long metal zipper is sewn to the far end of the air inlet of the heating pad. The location of the air outlet 1 needs to be determined through actual testing, and should be selected in an area where the temperature of the heating pad body is relatively low. Use an automatic tarpaulin buttoning machine to punch and fasten holes 4 on the four sides of the heating pad. There are four holes 4 on the long side and two holes 4 on the short side. Use ropes to pass through the holes 4 to secure the heating pad to the mattress and reduce the height of the heating pad's inflation and the extent of its contraction during operation.

[0063] The following is Figure 2 Test data after the heater pad was completed (heater unit is located in the upper right corner):

[0064] Heating power Indoor temperature Zipper status Temperature of the four corners of the heating pad 20 million for winter season 10.4℃ Completely closed Top left corner: 111.2℃, 120.9℃; Top right corner, Bottom left corner: 106.3℃, 107.7℃; Bottom right corner 20 million for winter season 9.6℃ Open 1 / 3 Top left corner: 106.1℃, 105.9℃; Top right corner, Bottom left corner: 102.0℃, 102.9℃; Bottom right corner 20 million for winter season 8.4℃ Open 1 / 2 Top left corner: 83.5℃, 84.4℃; Top right corner, Bottom left corner: 84.8℃, 85.9℃; Bottom right corner 20 million for winter season 10.6℃ Open 3 / 4 Top left corner: 75.4℃, 74.9℃; Top right corner, Bottom left corner: 73.0℃, 73.8℃; Bottom right corner 20 million for winter season 8.6℃ Fully open Top left corner: 61.4℃; Top right corner: 61.4℃; Bottom left corner: 61.9℃; Bottom right corner: 62.4℃

Claims

1. An adjustable warm air cushion, characterized in that: Add a freely openable and closeable air guide port (1) to the surface of the heating pad.

2. The adjustable warm air cushion according to claim 1, characterized in that: The flow guide (1) can be fully closed or fully open, and the size of the opening and closing can be freely adjusted by the user as needed.

3. The adjustable warm air cushion according to claim 2, characterized in that: The flow guide (1) can be a single port or a combination of multiple ports.

4. The adjustable warm air cushion according to claim 3, characterized in that: The flow guide (1) is located at the edge of the area where the measured temperature of the warm air pad is relatively low.

5. An adjustable warm air cushion according to claim 3, characterized in that... When the flow port (1) is in a completely closed state, and the indoor ambient temperature is between 10℃ and 20℃, the pad is heated for 2 hours under simulated home use conditions, and the actual measured maximum temperature of the pad does not exceed 140℃.

6. An adjustable warm air cushion according to claim 3, characterized in that... When the air inlet (1) is in a completely closed state, and the indoor ambient temperature is below 10℃, the pad is heated for 2 hours under simulated home use conditions, and the measured average temperature of the four corners of the warm air pad is not lower than 100℃.

7. An adjustable warm air cushion according to claim 3, characterized in that... When the air inlet (1) is fully open, the pad is heated for 2 hours under simulated home use conditions. The measured average temperature rise of the four corners of the warm air pad relative to the ambient temperature is more than 20°C.

8. An adjustable warm air cushion according to claim 3, characterized in that... The flow port (1) can be opened and closed by a zipper, or by Velcro, or by other convenient methods such as snaps, air release valves, etc.

9. An adjustable warm air cushion according to claim 3, characterized in that... The heating pad has perforations (4) on all four sides. A rope or strap is passed through the perforations (4) to bind and fix the heating pad to the mattress or bed frame.

10. An adjustable warm air pad according to claim 9, characterized in that webbing can be sewn onto the perforations (4) on the four sides of the warm air pad to replace the perforations, so as to fix the warm air pad to the mattress or bed frame.

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