阅读说明：本技术 一种微型便携防护服制冷系统 (Miniature portable protective clothing refrigerating system ) 是由 焦永生 于 2020-08-24 设计创作，主要内容包括：本发明揭示了一种微型便携防护服制冷系统,其包括蒸发器、冷凝器、节流装置、真空泵、聚风壳、风机和电源,所述蒸发器、冷凝器、节流装置、真空泵之间通过管道相连,所述微型便携防护服制冷系统还包括设置在管道内的制冷剂,所述制冷剂由所述真空泵驱动依次在所述冷凝器、节流装置和蒸发器之间循环流动,所述风机与所述蒸发器对应设置,用于将所述蒸发器周围的冷空气吹入防护服内,所述电源用于为所述真空泵和风机供电。本发明的微型便携防护服制冷系统利用制冷剂的相态变化进行制冷,其制冷效率更高,能够有效提供人体散热需要的冷量,迅速吸收人体的散热,使防护服穿着更为凉爽、舒适。(The invention discloses a refrigerating system of a miniature portable protective clothing, which comprises an evaporator, a condenser, a throttling device, a vacuum pump, an air gathering shell, a fan and a power supply, wherein the evaporator, the condenser, the throttling device and the vacuum pump are connected through a pipeline, the refrigerating system of the miniature portable protective clothing also comprises a refrigerant arranged in the pipeline, the refrigerant is driven by the vacuum pump to circularly flow among the condenser, the throttling device and the evaporator in sequence, the fan is arranged corresponding to the evaporator and used for blowing cold air around the evaporator into the protective clothing, and the power supply is used for supplying power to the vacuum pump and the fan. The miniature portable protective clothing refrigerating system utilizes the phase change of the refrigerant to refrigerate, has higher refrigerating efficiency, can effectively provide the cold energy required by the heat dissipation of the human body, quickly absorbs the heat dissipation of the human body, and leads the protective clothing to be cooler and more comfortable to wear.)

1. The utility model provides a miniature portable protective clothing refrigerating system which characterized in that: it includes evaporimeter (1), condenser (2), throttling arrangement (3), vacuum pump (4), gathers wind shell (5), fan (6) and power (7), link to each other through the pipeline between evaporimeter (1), condenser (2), throttling arrangement (3), vacuum pump (4), miniature portable protective clothing refrigerating system is still including setting up the refrigerant in the pipeline, the refrigerant by vacuum pump (4) drive is in proper order circulation flow between condenser (2), throttling arrangement (3) and evaporimeter (1), fan (6) with evaporimeter (1) corresponds the setting, be used for with in the protective clothing is insufflated to cold air around evaporimeter (1), power (7) are used for doing vacuum pump (4) and fan (6) power supply.

2. The miniature portable protective garment refrigeration system as set forth in claim 1, wherein: the evaporator (1) comprises a first inlet (10) and a first outlet (11), the condenser (2) comprises a second inlet (20) and a second outlet (21), a first pipeline (8) is connected between the first inlet (10) and the second outlet (21), the throttling device (3) is installed on the first pipeline (8), a second pipeline (80) is connected between the first outlet (11) and the second inlet (20), and the vacuum pump (4) is installed on the second pipeline (80).

3. The miniature portable protective garment refrigeration system as set forth in claim 1, wherein: the air-collecting device further comprises an air-collecting shell (5) and an air pipe (53) connected between the air-collecting shell (5) and the protective clothing, and the evaporator (1) and the fan (6) are arranged in the air-collecting shell (5).

4. A miniature portable protective garment refrigeration system as set forth in claim 3, wherein: the wind gathering shell (5) comprises a main body part (50), a connecting part (52) and a transition part (51) connected between the main body part (50) and the connecting part (52), the cross section of the transition part (51) is gradually reduced from the main body part (50) to the connecting part (52), and the connecting part (52) is connected with the wind pipe (53).

5. The miniature portable protective garment refrigeration system as set forth in claim 1, wherein: the device also comprises a belt (9) tied at the waist, wherein the evaporator (1), the condenser (2), the throttling device (3), the vacuum pump (4), the wind gathering shell (5), the fan (6) and the power supply (7) are all arranged on the belt (9).

6. The miniature portable protective garment refrigeration system as set forth in claim 5, wherein: the harness strap (9) is a restraint strap, and the evaporator (1), the condenser (2), the throttling device (3), the vacuum pump (4), the wind gathering shell (5), the fan (6) and the power supply (7) are hooked on the restraint strap in groups.

7. A miniature portable protective garment refrigeration system as claimed in any one of claims 1 to 6, wherein: the refrigerant is n-pentane.

8. The miniature portable protective body suit refrigeration system of claim 7, wherein: the evaporator (1) and the condenser (2) comprise spiral copper tubes through which the refrigerant flows.

9. The miniature portable protective body suit refrigeration system of claim 8, wherein: the diameter of the spiral copper pipe is 10mm, and the wall thickness is 1 mm-1.5 mm.

10. The miniature portable protective body suit refrigeration system of claim 7, wherein: the power supply (7) is a 12V battery pack, and the working flow of the vacuum pump (4) is at least 15L/min.

Technical Field

The invention relates to a refrigerating system of a miniature portable protective suit.

Background

At present, the closed protective clothing is required to be worn in many occasions, for example, in workshops or hospitals with high dustproof requirements, the closed protective clothing is often required to be worn, and particularly in the epidemic prevention process, the wearing of the protective clothing is indispensable.

Because the protective clothing has good tightness, the protective clothing is easy to feel sultry when being worn, and the improvement of the ventilation performance is particularly important for the wearing comfort. In the prior art, protective clothing equipped with a refrigeration system exists, for example, chinese patent application No. 201920873900.5 discloses a double-layer refrigeration air-conditioning clothing, which includes semiconductor refrigeration sheets (also called thermoelectric refrigeration sheets) for refrigeration and a fan, wherein cold air around the semiconductor refrigeration sheets is blown into the air-conditioning clothing by the fan, so that the temperature in the air-conditioning clothing is reduced, and the clothing is more comfortable to wear.

However, although the semiconductor cooling plate has the advantage of high cooling speed, the semiconductor cooling plate also has the following disadvantages: 1) semiconductor refrigeration piece refrigeration inefficiency, its refrigeration efficiency is about 0.6, and is fixed, can not change through technical means for it is difficult to in time, fully takes away the heat in the protective clothing, if need improve the refrigerating output, then need increase semiconductor refrigeration piece, and this will increase refrigerating system's quality and volume, is unfavorable for wearing. 2) The low direct current power supply that makes its needs the large capacity of refrigeration efficiency leads to it can not work for a long time, also can release a large amount of heats to operational environment simultaneously, influences the hot environment on every side, and in addition, the big direct current power supply of capacity, its quality and volume are also big more for dress is heavy, influences the travelling comfort. 3) The semiconductor refrigeration piece can not bear vibration, and even if the semiconductor refrigeration piece falls down at a height of 20-30 cm, the refrigeration function of the semiconductor refrigeration piece is lost.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a miniature portable protective clothing refrigerating system which is high in refrigerating efficiency, can effectively absorb heat of a human body and is more comfortable.

In order to achieve the purpose, the invention provides a miniature portable protective clothing refrigerating system which comprises an evaporator, a condenser, a throttling device, a vacuum pump, a wind gathering shell, a fan and a power supply, wherein the evaporator, the condenser, the throttling device and the vacuum pump are connected through pipelines, the miniature portable protective clothing refrigerating system further comprises a refrigerant arranged in the pipelines, the refrigerant is driven by the vacuum pump to circularly flow among the condenser, the throttling device and the evaporator in sequence, the fan is arranged corresponding to the evaporator and used for blowing cold air around the evaporator into the protective clothing, and the power supply is used for supplying power to the vacuum pump and the fan.

In addition, the invention also provides the following auxiliary technical scheme:

the evaporator comprises a first inlet and a first outlet, the condenser comprises a second inlet and a second outlet, a first pipeline is connected between the first inlet and the second outlet, the throttling device is installed on the first pipeline, a second pipeline is connected between the first outlet and the second inlet, and the vacuum pump is installed on the second pipeline.

The miniature portable protective clothing refrigerating system further comprises a wind gathering shell and a wind pipe connected between the wind gathering shell and the protective clothing, and the evaporator and the fan are arranged in the wind gathering shell.

The wind gathering shell comprises a main body part, an interface part and a transition part connected between the main body part and the interface part, the cross section of the transition part is gradually reduced from the main body part to the interface part, and the interface part is connected with the wind pipe.

The miniature portable protective clothing refrigerating system further comprises a belt tied to the waist, and the evaporator, the condenser, the throttling device, the vacuum pump, the air gathering shell, the fan and the power supply are all installed on the belt.

The bridle is the restraint area, evaporimeter, condenser, throttling arrangement, vacuum pump, gather wind shell, fan and power grouping hook on the restraint area.

The refrigerant is n-pentane.

The evaporator and the condenser comprise a spiral copper tube through which the refrigerant flows.

The diameter of the spiral copper pipe is 10mm, and the wall thickness is 1 mm-1.5 mm.

The power supply is a 12V battery pack, and the working flow of the vacuum pump is at least 15L/min.

Compared with the prior art, the invention has the advantages that:

1. the miniature portable protective clothing refrigerating system utilizes the phase change of the refrigerant to refrigerate, has higher refrigerating efficiency, can effectively provide the cold energy required by the heat dissipation of the human body, quickly absorbs the heat dissipation of the human body, and leads the protective clothing to be cooler and more comfortable to wear;

2. the miniature portable protective clothing refrigeration system uses n-pentane as a refrigerant, the phase change temperature of the system is just close to the resting temperature of a human body, the phase change can be conveniently generated, the overall size and weight of the refrigeration system are effectively reduced, the protective clothing is more portable to wear, and the work is not influenced;

3. the miniature portable protective clothing refrigerating system connects the fan and the evaporator to the strap, is very convenient to install and carry, and simultaneously ensures that all parts are in direct contact with air, thereby having better radiating effect.

Drawings

FIG. 1 is a schematic diagram of the construction of a miniature portable protective garment refrigeration system of the present invention.

FIG. 2 is a schematic diagram of the miniature portable protective garment refrigeration system of the present invention with drawstrings.

Figure 3 is a schematic view of the miniature portable protective garment refrigeration system of the present invention strapped to the waist.

Detailed Description

The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.

As shown in fig. 1, the miniature portable protective clothing refrigeration system corresponding to a preferred embodiment of the present invention comprises an evaporator 1, a condenser 2, a throttling device 3, a vacuum pump 4, a wind-gathering shell 5, a fan 6 and a power supply 7.

The evaporator 1, the condenser 2, the throttling device 3 and the vacuum pump 4 are connected by pipes to form a closed loop, specifically, the evaporator 1 comprises a first inlet 10 and a first outlet 11, the condenser 2 comprises a second inlet 20 and a second outlet 21, the throttling device 3 is installed on a first pipe 8 connected between the first inlet 10 and the second outlet 21, and the vacuum pump 4 is installed on a second pipe 80 connected between the second inlet 20 and the first outlet 11. The pipe and the inlet may be connected by a pipe joint 81.

The refrigerant is filled in the piping, and the refrigerant can flow through the evaporator 1, the condenser 2, the expansion device 3, and the vacuum pump 4 is a power source for driving the refrigerant to flow. Specifically, the vacuum pump 4 compresses and delivers the refrigerant in a gaseous state to the condenser 2, in which process the refrigerant changes from the gaseous state to a liquid state, and releases heat. The liquid refrigerant then passes through the throttle device 3 and enters the evaporator 1, where it changes from a liquid state to a gaseous state and evaporates absorbing heat. The gaseous refrigerant is again driven to the evaporator 1 by the vacuum pump 4, thus reciprocating.

The evaporator 1 and the condenser 2 both adopt spiral copper pipes for heat exchange, the size parameters of the spiral copper pipes can be determined according to actual requirements, preferably, the pipe diameters of the spiral copper pipes of the evaporator 1 and the condenser 2 are 10mm, the wall thickness is 1-1.5 mm, the outer diameter of the spiral copper pipe of the condenser 2 is preferably 40mm, and the height is 200 mm; the spiral copper tube of the evaporator 1 preferably has an outer diameter of 40mm and a height of 100 mm. The spiral copper pipe is used for heat dissipation, so that the heat exchange area and the efficiency can be effectively improved, the size is small, and the overall size of the refrigerating system can be effectively reduced.

The evaporator 1 and the fan 6 are installed in the wind gathering shell 5, the wind gathering shell 5 comprises a main body part 50 in a tubular shape, a connecting part 52 and a transition part 51 connected between the main body part 50 and the connecting part 52, the size of the connecting part 52 is smaller than that of the main body part 50, and the connecting part 51 and the main body part 50 are in transition connection through the transition part 51 with the gradually reduced cross section. The cross-sectional shapes of the main body portion 50, the connecting portion 52 and the transition portion 51 are preferably circular. The fan 6 is installed at a position closer to the interface portion 52 than the evaporator 1, and the fan 6 is a micro duct fan, and can suck air from the opening 50a of the main body portion 50, cool the evaporator 1, and send the air out of the interface portion 52 after operation. The interface 52 is provided with an air duct 53, and the air duct 53 is connected to the protective clothing for sending cold air into the protective clothing.

The filtering device 54 is arranged in the wind gathering shell 5, and the filtering device 54 is used for filtering and purifying the outside air, so that the gas entering the protective clothing can meet the requirement of the protection grade of the protective clothing, and is safer and more reliable. The installation position of the filter device 54 is not limited, and for example, it may be installed at the opening 50a, or between the fan 6 and the evaporator 1, or at the outlet of the fan 6.

The wind gathering shell 5 is made of a material with good heat insulation performance, and a heat insulation layer can be arranged inside or outside the wind gathering shell, so that the air inside the wind gathering shell can be cooled better, and heat exchange with the outside air is reduced. The wind gathering shell 5 can retain and collect the cold energy generated by the evaporator 1, thereby reducing the loss of the cold energy, and enabling the low-temperature gas to be better sent into the protective clothing to cool the human body.

The air pipe 53 is preferably a flexible pipe, such as a corrugated pipe, etc., and the air pipe is a flexible pipe, so that the angle rotation is flexible, the length can be changed, the wearing is more comfortable, and the normal activities of people are not affected. The protective clothing can be provided with a joint capable of being in quick butt joint with the air pipe 53, so that the installation is convenient.

The power supply 7 is electrically connected with the vacuum pump 4 and the fan 6 and is used for supplying power to the vacuum pump 4 and the fan 6.

In the invention, the refrigerant adopts n-pentane, and the specific heat of the n-pentane is 2.25/Kg ℃; latent heat of vaporization is 357 KJ/Kg; the relative density is 626Kg/Nm³(ii) a The molecular weight is 72.

The heat dissipation of human body in light activity and moderate activity are 181w and 235w respectively (the numerical value is referred to in "practical heat supply and air conditioning design manual" second edition P1548, main edition: Lu Zuang Qing, Chinese building industry press), taking moderate activity as an example, the heat generated per hour is: 235(w) × 3600(s) ═ 846000(J), which is also its required heat dissipation; the mass of n-pentane to be circulated per hour is: 846000(J)/357(KJ/Kg) ≈ 2.37 (Kg); the volume of n-pentane needed to be circulated per hour is calculated as follows: 2.37(Kg)/72 × 22.4 ≈ 0.73 (m)³/h)≈12.1(L/min)。

It can be seen that the flow rate of the vacuum pump 4 in the operating state needs to be at least 12.1L/min, and in view of efficiency loss and the like, the operating flow rate of the vacuum pump 4 is preferably at least 15L/min.

The power supply 7 adopts a direct current power supply, the voltage of the direct current power supply is 12V, and the capacity of the direct current power supply is preferably a lithium battery pack of 15000 mAh. The vacuum pump 4 has the functions of pressurizing and vacuumizing, increases the vacuum degree on the evaporator 1 side, and pressurizes on the condenser 2 side, and adopts a vacuum pump with the voltage of 12V and the power of 42w, for example, a vacuum pump with the model number VN-C4 can be selected.

For heat dissipation of human bodyThe air amount is 846000(J/h)/[82.8(KJ/Kg) -50.3(KJ/Kg)]26(Kg/h), in the formula, a more typical value of the air conditioner calculation temperature in summer is selected as an estimation basis: 82.8 at 33 deg.C and 60% relative humidity, 50.3 at 20 deg.C and 80% relative humidity (enthalpy value after refrigeration), and the difference between the two is refrigerating capacity and is converted into volume of 26(Kg/h)/1.293 (Kg/m)³)≈20(m³H), therefore, the amount of air blown by the fan 6 needs to be more than 20m³/h。

In this embodiment, the fan 6 is selected as a duct fan, and the air supply amount is 36m³The power is 6W, and the voltage is direct current 12V.

As shown in fig. 3, the evaporator 1, the condenser 2, the throttling device 3, the vacuum pump 4, the wind-collecting shell 5, the fan 6, the power supply 7, etc. are integrally mounted on a belt 9, the belt 9 is tied on the waist of the user, preferably a restraining belt, and the evaporator 1, etc. can be connected to the restraining belt by means of, for example, a hook, so that the connection is very convenient. During the connection, evaporimeter 1, gather wind shell 5 and fan 6 and be a set of, through gather wind shell 5 connect on band 9 can, power 7 and vacuum pump 4 can be connected and be a set of, condenser 2 is another group, hangs respectively in the different positions of band 9. Because condenser 2, power 7 and vacuum pump 4 etc. all directly expose in the air, it can dispel the heat fast, just with the cooling, improve life. The pipeline adopts the flexible plastic pipe, can make the shape change of adaptability, and the wearing use of being more convenient for.

Because vacuum pump 4 during operation can produce more obvious vibration, consequently, can separate through the soft layer between vacuum pump 4 and the band 9, the soft layer can be rubber, felt, bubble cotton etc. can play absorbing effect, uses more comfortablely.

The normal pentane is used as a refrigerant, so that the mass and the volume of the whole refrigerating system can be effectively reduced, the evaporation/liquefaction temperature of the normal pentane is 36.1 ℃, the pressure requirement on the vacuum pump is low, the vacuum pump with small size and weight can be used, the volumes of other parts can be correspondingly reduced, and the portability and the miniaturization are more favorably realized. In addition, the evaporation/liquefaction temperature of the n-pentane is close to the body temperature of a human body, phase change is easy to occur, the use is more comfortable, and supercooling or overheating is avoided.

Through measurement and calculation, the mass of the whole refrigerating system (excluding the bridle 9) is not more than 2Kg, so that the protective clothing is more portable to carry and wear, the load is reduced, and the normal activity is facilitated.

The miniature portable protective clothing refrigerating system at least comprises the following advantages:

1. the miniature portable protective clothing refrigerating system utilizes the phase change of the refrigerant to refrigerate, has higher refrigerating efficiency, can effectively provide the cold energy required by the heat dissipation of the human body, quickly absorbs the heat dissipation of the human body, and leads the protective clothing to be cooler and more comfortable to wear;

2. the miniature portable protective clothing refrigeration system uses n-pentane as a refrigerant, the phase change temperature of the system is just close to the body temperature of a human body, the phase change can be conveniently generated, the overall size and weight of the refrigeration system are effectively reduced, the protective clothing is more portable to wear, and the work is not influenced;

3. the miniature portable protective clothing refrigerating system connects the fan and the evaporator to the strap, is very convenient to install and carry, and simultaneously ensures that all parts are in direct contact with air, thereby having better radiating effect.

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.