Cooling vest with multi-stage cooling function and preparation process thereof

Abstract

The invention provides a cooling vest with a multi-stage cooling function and a preparation process of the cooling vest. The cooling vest is composed of a heat exchange bag, a cold storage pad, a first temperature control device, a second temperature control device, a first pipeline, a second pipeline, a front piece and a rear piece. The first temperature control device can control liquid in the first pipeline to flow, and the second temperature control device can control liquid in the second pipeline to flow. Liquid in the pipeline can enter the heat exchange bag and then is cooled by the cold storage pad. According to the cooling vest, when the first temperature control device and the second temperature control device are not started, the back of the human body can be cooled through the cold storage pad. When the first temperature control device is started, the chest and the back can be cooled. When the second temperature control device is started, the abdomen and the waist can be cooled. The two temperature control devices can be started independently or simultaneously, the multi-stage cooling function can be achieved, and the cooling requirements of the human body in different high-temperature environments are met.

Description

Technical Field

[0001] The present application relates to the field of textile and clothing, and more specifically, it relates to a cooling vest with a multi-stage cooling function and a preparation process thereof. Background Art

[0002] Cooling vests bring coolness and comfort to workers in the sweltering summer. Currently, the common cooling vests on the market are mainly cold storage type cooling vests and liquid cooling type cooling vests. The Chinese patent with the authorization publication number CN213756745U discloses a cold storage type cooling vest. The cold storage type cooling vest absorbs the heat of the human body and the environment through a cold storage agent. Ice packs have a high enthalpy value and can absorb more heat under the same mass. However, the phase change temperature point of ice is relatively low, and direct contact with the human body is likely to cause cold stress. In addition, the Chinese patent with the publication number CN 209300300U discloses a liquid cooling type cooling vest. The liquid cooling type cooling vest cools the human body through the liquid in the pipeline. However, the pipelines in the existing liquid cooling type cooling vests are all controlled by a single system and cannot achieve precise temperature control of different areas of the human body.

[0003] Therefore, the development of a cold storage pad with both high enthalpy value and alleviating cold stress and a pipeline with regional precise temperature control can greatly help improve the wearing comfort of the cooling vest. Summary of the Invention

[0004] The invention object of the present application is to develop a cooling vest with a cold storage pad having both high enthalpy value and alleviating cold stress and a pipeline with regional precise temperature control, so as to improve the wearing comfort of the cooling vest. For this purpose, the present invention provides a cooling vest with a multi-stage cooling function and a preparation process thereof.

[0005] In the first aspect, the present invention provides a cooling vest with a multi-stage cooling function. The cooling vest with the multi-stage cooling function includes a heat exchange bag, a cold storage pad, a temperature control device I, a temperature control device II, a pipeline I, a pipeline II, a front piece, and a back piece. The temperature control device I can independently control the liquid flow in the pipeline I, and the temperature control device II can independently control the liquid flow in the pipeline II. The pipeline I is mainly distributed in the upper half of the front piece and the back piece, and the pipeline II is mainly distributed in the lower half of the front piece and the back piece. The liquid in the pipeline can enter the heat exchange bag and then be cooled by the cold storage pad. When the cooling vest is not started by the temperature control device I and the temperature control device II, the cold storage pad can be relied on to cool the human back. When the temperature control device I is started, it can cool the chest and the back. When the temperature control device II is started, it can cool the abdomen and the waist. The two temperature control devices can be started separately or simultaneously, and can achieve a multi-stage cooling function to meet the cooling requirements of the human body in environments with different high temperature degrees.

[0006] Both the temperature control device 1 and the temperature control device 2 are composed of a lithium battery, a water pump, a thermocouple temperature sensor, and a temperature control module, and can realize the operation and stop of the water pump according to a preset temperature.

[0007] Both the pipeline 1 and the pipeline 2 are made of PU or PVC materials, with an inner pipe diameter in the range of 1 - 3 mm and an outer pipe diameter in the range of 3 - 5 mm.

[0008] The front piece and the rear piece are cut from a fabric composed of polyester or nylon.

[0009] The heat exchange bag is a sac-shaped object formed by hot pressing a polyurethane composite film, and has two water inlets and two water outlets.

[0010] The cold storage pad includes air, a spacer fabric, a cold storage agent, and a packaging bag. The air, spacer fabric, and cold storage agent are placed inside the packaging bag.

[0011] The spacer fabric can be selected as a double-layer spacer fabric woven from yarns composed of one or more combinations of polyester fiber, polypropylene fiber, nylon fiber, and polyethylene fiber, and the fabric layer height is between 1 - 3 cm.

[0012] The cold storage agent is composed of deionized water, a thickening agent, a foaming agent, and inorganic salts. The content of deionized water is between 85 - 99%, the thickening agent is between 0.1 - 9%, the foaming agent is between 0.1 - 6%, and the inorganic salts are between 0.1 - 5%.

[0013] The thickening agent is one or more of sodium polyacrylate, starch, gum arabic, and carboxymethyl cellulose.

[0014] The foaming agent is one or more of sodium dodecyl sulfate and sodium lauroyl sarcosinate.

[0015] The inorganic salts are one or more of sodium carbonate, sodium sulfate, sodium chloride, and calcium chloride.

[0016] Second, the present application provides a preparation method for the above-mentioned cooling vest with a multi-stage cooling function, which includes the following steps:

[0017] Step 1: Prepare the cold storage pad. The preparation of the cold storage pad can be carried out in the following five steps

[0018] (1) Cut the spacer fabric and the composite fabric;

[0019] (2) Stack and hot-press the composite fabrics in the order of "one layer of composite fabric, one layer of spacer fabric, one layer of composite fabric" in sequence, leaving a 1 cm gap as a filling port;

[0020] (3) Inject the cold storage agent;

[0021] (4) Inject a fixed amount of air;

[0022] (5)Thermal press composite sealing.

[0023] Step Two: Cut the clothing fabric and reserve positions for the pipeline, temperature control device, and heat exchange bag.

[0024] Step Three: Assemble the pipeline, temperature control device, and heat exchange bag.

[0025] Step Four: Sew the front piece and the back piece.

[0026] Further, in (1) of Step One, the length and width of the spacer fabric should be 2 - 5 cm less than those of the composite fabric.

[0027] Further, in (2) of Step One, stack them in the order of "one layer of composite fabric, one layer of spacer fabric, one layer of composite fabric" and thermally press and bond the two layers of composite fabric together. The width of the thermal press seam is between 0.2 - 0.8 cm, the thermal press temperature is between 180 - 260 °C, and the thermal press pressure is between 10 - 30 MPa. In addition, leave a 1 cm gap on one side of the composite fabric without thermal press bonding as the filling port for subsequent air and cold storage agent filling.

[0028] Further, in (3) of Step One, add thickener, foaming agent, and inorganic salt to deionized water in sequence, and stir for 6 hours at 25 - 50 °C, with a stirring speed of 50 - 300 revolutions per minute;

[0029] Further, in (4) of Step One, fill deionized water from the filling port until it is full, then pour out the deionized water to measure the capacity of the cold storage bag, dry the cold storage bag, then load the cold storage agent, and the content of the cold storage agent is 10 - 90% of the capacity of the cold storage bag. Then, fill in air, and the air content is 10 - 90% of the capacity of the cold storage bag;

[0030] Further, in (5) of Step One, after filling in air, clamp the filling port of the cold storage bag and perform thermal press for sealing. The thermal press temperature is between 180 - 260 °C, and the thermal press pressure is between 10 - 30 MPa.

[0031] Further, in Step Two: Pipeline One and Pipeline Two are clamped by two layers of fabric or fixed on a single - sided fabric by sewing. The placement methods of the temperature control device and the heat exchange bag mainly adopt the pocket placement method. Cut the fabric of a specific size according to the above requirements.

[0032] Further, in Step Three: Sew the fabric to fix Pipeline One, Pipeline Two, Temperature Control Device One, Temperature Control Device Two, and the heat exchange bag on the fabric.

[0033] Further, in Step Four: Finally, sew the front piece and the back piece to make a cooling vest.

[0034] Due to the adoption of the above - mentioned scheme, the beneficial effects of the present invention are:

[0035] 1. A cooling vest with a multi - stage cooling function according to the present invention can achieve a multi - stage cooling function by controlling the independent or simultaneous start and stop of two temperature control devices, meeting the cooling requirements of the human body in environments with different high - temperature degrees.

[0036] 2. The multi - stage cooling function and the cold quantity slow - release function of the cold storage pad in the cooling vest of the present invention contribute to increasing the cooling duration.

[0037] 3. The preparation process of the present invention is simple and does not require equipment replacement, can be mass - produced, and is suitable for large - scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is the process flow chart of a cooling vest with a multi - stage cooling function provided by the present invention;

[0039] Figure 2 is the structural schematic diagram of a cooling vest with a multi - stage cooling function provided by the present invention;

[0040] Figure 3 is the structural schematic diagram of the cold storage pad provided by the present invention;

[0041] Figure 4 is the schematic diagram of the cold quantity slow - release principle of the cold storage pad provided by the present invention;

[0042] Note: 1 - heat exchange bag, 2 - cold storage pad, 3 - temperature control device 1, 4 - temperature control device 2, 5 - pipeline 1, 6 - pipeline 2, 7 - front piece, 8 - back piece, 9 - composite fabric, 10 - cold storage agent, 11 - spacer fabric, 12 - air. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The technical solutions and effects of the present application will be further described in detail below in conjunction with the embodiments and the drawings. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0044] Embodiment:

[0045] Step 1, prepare the cold storage pad. The preparation of the cold storage pad can be carried out in the following five steps

[0046] (1) Cut the spacer fabric and the composite fabric. The length of the spacer fabric is 8 cm and the width is 6 cm; the length of the composite fabric is 10 cm and the width is 8 cm. The spacer fabric is a double - layer polyester spacer fabric, and the composite fabric is a composite fabric composed of a polyurethane film and a polyester fabric.

[0047] (2) Heat-pressed composite fabric. Stack the layers in the order of "one layer of composite fabric, one layer of spacer fabric, one layer of composite fabric" and heat-press and bond the two layers of composite fabric together. The width of the heat-pressed seam is 0.4 cm, the heat-pressing temperature is 200 °C, and the heat-pressing pressure is 15 MPa. In addition, leave a 1-cm gap on one side of the composite fabric without heat-pressing and bonding it as the filling port for subsequent air and refrigerant filling.

[0048] (3) Preparation of refrigerant. Add sodium polyacrylate, sodium dodecyl sulfate, and sodium carbonate into deionized water in sequence and stir for 6 hours at 25 - 50 °C with a stirring speed of 50 - 300 revolutions per minute. The content of deionized water is 95%, the content of sodium polyacrylate is 2%, the content of foaming agent is 2%, and the content of inorganic salt is 1%.

[0049] (4) Injection of refrigerant and air. Load the refrigerant, and the content of the refrigerant is 70% of the capacity of the cold storage bag. Then, fill in air, and the content of air is 30% of the capacity of the cold storage bag.

[0050] (5) Heat-pressed composite sealing. Clamp the filling port of the cold storage bag and perform heat-pressing for sealing. The heat-pressing temperature is between 200 °C, and the heat-pressing pressure is between 15 MPa.

[0051] Step 2: Pipeline 1 and Pipeline 2 are clamped by two layers of fabric or fixed on a single-layer fabric by sewing. The placement method of the temperature control device and the heat exchange bag mainly adopts the pocket placement method. Cut the fabric into a specific size according to the above requirements.

[0052] Step 3: Sew the fabric to fix Pipeline 1, Pipeline 2, Temperature Control Device 1, Temperature Control Device 2, and the heat exchange bag on the fabric.

[0053] Step 4: Finally, sew the front piece and the back piece to make a cooling vest.

[0054] Using a Pyrist Dse differential scanning calorimeter, the enthalpy value of the cold storage agent was measured to be 289 J / g in accordance with "GB / T 19466.3-2004 Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of melting and crystallization temperatures and enthalpies". A constant temperature heating hot plate was used to simulate the human skin surface. The surface of the hot plate was made of silica gel, and the surface temperature was set at 33 °C. The cold storage pad was placed on the hot plate, and a thermocouple thermometer was used to measure the temperature on the side of the cold storage pad close to the hot plate and the temperature on the side of the cold storage pad close to the environment, and the relevant data was recorded. The test environment temperature was maintained at 25 ± 1 °C, and the environmental humidity was maintained at 65 ± 1% RH. The test results showed that the temperature of the contact surface between the cold storage pad of the present invention and the hot plate was on average 8 °C lower than that of the ordinary cold storage pad. The time taken for the surface of the cold storage pad of the present invention to reach 33 °C was 11 minutes longer than that of the ordinary cold storage pad. Through actual wearing of the cooling vest by a real person, it was found that in high temperature environments of 30 °C and 35 °C, wearing the cooling vest could respectively reduce the average skin temperature of the subject by more than 0.8 and 1.2 °C, and the human body felt cool.

[0055] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the equipment and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cooling vest with multi-stage cooling function, characterized in that, The cooling vest with multi-stage cooling function includes heat exchange bags, cold storage pads, temperature control device 1, temperature control device 2, pipeline 1, pipeline 2, front piece and back piece; The temperature control device 1 independently controls the liquid flow in the pipeline 1, and the temperature control device 2 independently controls the liquid flow in the pipeline 2.

2. The cooling vest with multi-stage cooling function according to claim 1, characterized in that Both the temperature control device 1 and the temperature control device 2 are composed of a lithium battery, a water pump, a thermocouple temperature sensor and a temperature control module, and realize the operation and stop of the water pump according to a preset temperature.

3. The cooling vest with multi-stage cooling function according to claim 1, characterized in that, The pipeline 1 is arranged in the upper half of the front piece and the back piece, and the pipeline 2 is arranged in the lower half of the front piece and the back piece.

4. The cooling vest with multi-stage cooling function according to claim 1, characterized in that, The cold storage pad includes air, cold storage agent, double-layer spacer fabric and packaging bag; the air and the cold storage agent are filled in the double-layer spacer fabric, and the double-layer spacer fabric is arranged in the packaging bag.

5. The cooling vest with a multi-stage cooling function according to claim 4, characterized in that, The cold storage agent is composed of deionized water, thickening agent, foaming agent, and inorganic salt. The content of deionized water is 85-99%, the content of thickening agent is 0.1-9%, the content of foaming agent is 0.1-6%, and the content of inorganic salt is 0.1-5%.

6. The cooling vest with multi-stage cooling function according to claim 5, characterized in that, The thickening agent is selected from one or more of sodium polyacrylate, starch, gum arabic, and carboxymethyl cellulose; The foaming agent is selected from one or more of sodium dodecyl sulfate and sodium lauroyl sarcosinate; The inorganic salt is selected from one or more of sodium carbonate, sodium sulfate, sodium chloride, and calcium chloride.

7. The cooling vest with multi-stage cooling function according to claim 4, characterized in that, The double-layer spacer fabric is woven from yarns composed of one or more combinations of polyester fiber, polypropylene fiber, nylon fiber, and polyethylene fiber.

8. A method for preparing a cooling vest with a multi-stage cooling function according to any one of claims 1-7, characterized in that, It includes the following steps: Step 1: Prepare the cold storage pad; (1) Cut the spacer fabric and the composite fabric; (2) Stack them in the order of "one layer of composite fabric, one layer of spacer fabric, one layer of composite fabric" in sequence, hot-press the composite fabric, and leave a 1 cm gap as the filling port; (3) Inject the cold storage agent; (4) Inject a certain amount of air; (5) Hot-press and seal; Step 2: Cut the clothing fabric and reserve positions for pipelines, temperature control devices, and heat exchange bags; Step 3: Assemble pipelines, temperature control devices, and heat exchange bags; Step 4: Sew the front piece and the back piece.

9. The preparation method of the cooling vest with multi-stage cooling function according to claim 8, characterized in that, In (3) and (4) of Step 1, the air injection volume is 10-90% of the packaging bag volume, and the cold storage agent injection volume is 10-90% of the packaging bag volume.

10. The preparation method of the cooling vest with multi-stage cooling function according to claim 8, characterized in that, In (5) of Step 1, the hot-press temperature is 180-260 °C, and the hot-press pressure is 10-30 MPa.

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