A temperature control device

Abstract

The application relates to the technical field of logistics transportation, and discloses a temperature control device, which comprises a heat preservation shell and at least one group of temperature control components; the temperature control component comprises a warm patch and a humidifying part; the heat preservation shell is internally provided with a storage space for placing transportation articles; the warm patch and the humidifying part are both located in the storage space, and the humidifying part is used for continuously providing moisture for the warm patch when the warm patch generates heat. The humidifying part can also increase the humidity of the warm patch, so that the warm patch can normally and continuously generate heat in a low-temperature environment, and therefore the heat generation efficiency of the warm patch can be improved.

Description

Technical Field

[0001] This invention relates to the field of logistics and transportation technology, and specifically to a temperature control device. Background Technology

[0002] When transporting certain items, if the ambient temperature is low, temperature-controlled packaging is usually added to prevent freezing damage. For example, when transporting cosmetics, fruits and vegetables, and live animals in winter, there is often a problem of freezing damage due to low ambient temperatures. Therefore, temperature-controlled packaging is generally considered as an anti-freezing measure during winter transportation.

[0003] In the logistics and transportation sector, adding temperature-controlled packaging to transported goods such as cosmetics, fruits and vegetables, and live animals will increase logistics and transportation costs. How to control the temperature of transported goods in a low-cost and effective manner is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] In view of this, the present invention provides a temperature control device that enables low-cost and efficient temperature control during the transportation of goods.

[0005] In a first aspect, the present invention provides a temperature control device, comprising: an insulation shell and at least one set of temperature control components; the temperature control components include a heat pack and a humidification section;

[0006] The interior of the insulated shell is equipped with storage space for placing transported goods;

[0007] Both the heat pack and the humidifier are located within the storage space, and the humidifier is used to continuously provide moisture to the heat pack when it is heating up.

[0008] In some alternative embodiments, the humidifying part is made of a water-absorbing material;

[0009] The humidifying part is located within the heat transfer range of the heat pack.

[0010] In some alternative embodiments, the humidifying part is in contact with the surface of the heat pack.

[0011] In some alternative embodiments, the humidifying part is located on the side of the heat pack away from the nonwoven fabric layer.

[0012] In some alternative embodiments, the humidifying unit absorbs 20g to 100g of water.

[0013] In some alternative embodiments, the humidifying section includes one or more layers of absorbent paper.

[0014] In some alternative implementations, the temperature control component is located on the bottom surface of the storage space; the portion of the storage space above the temperature control component is used to place transported items.

[0015] In some alternative implementations, the humidifying part is located below the heat pack.

[0016] In some alternative implementations, the temperature control device further includes: a cold storage bag;

[0017] The cold storage bag is located within the storage space, and the cold storage bag contains a gel and / or a liquid cold storage agent.

[0018] In some alternative implementations, the number of the cold storage bags is multiple;

[0019] Multiple cold storage bags are evenly distributed within the storage space.

[0020] The temperature control device provided by this invention includes a humidifier in addition to the heat pack inside the insulation shell. When the heat pack is heating, the humidifier can continuously provide moisture to the heat pack, thereby maintaining the humidity of the heat pack. When the temperature control device is in a low-temperature environment, even if the original moisture in the air decreases, the humidifier can increase the humidity of the heat pack, ensuring that the heat pack can heat normally and continuously, thereby improving the heating efficiency of the heat pack. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a temperature control device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the test box in the first test example according to an embodiment of the present invention;

[0024] Figure 3 This is a temperature curve diagram of a first test example according to an embodiment of the present invention;

[0025] Figure 4 This is another structural schematic diagram of the temperature control device according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the test box structure in the second test example according to an embodiment of the present invention;

[0027] Figure 6 This is a temperature curve diagram of a second test example according to an embodiment of the present invention;

[0028] Figure 7This is a schematic diagram of the test box structure in the third test example according to an embodiment of the present invention;

[0029] Figure 8 This is a temperature curve diagram of a third test example according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the two surfaces of a heat patch according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the test box structure in the fourth test example according to the present invention;

[0032] Figure 11 This is a temperature curve diagram of the fourth test example according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Insulated shell; 101. Insulated cardboard box; 102. Foam box; 20. Heat pack; 201. Non-woven fabric layer; 202. Heat-conducting layer; 30. Humidifier; 301. Absorbent paper; 40. Cold storage bag; 401. Ice pack; 100. Simulation box. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] When using temperature-controlled packaging to prevent frozen transported goods, the temperature-controlled packaging can take the following forms:

[0037] (1) Use PCM (Phase Change Material) phase change cold storage agent + insulated box: Commonly used in the transportation of pharmaceuticals, high-end food, hazardous chemicals, etc. The solution can be used for various climate changes throughout the year, including high temperature and low temperature weather, and control the temperature within a certain range;

[0038] (2) A constant temperature box made of compressor + battery pack: It is a supplementary form of refrigerated truck, used for small-scale cargo transportation. It is also commonly used in the transportation of medicines, high-end food, and hazardous chemicals. The solution can be used for various climate changes throughout the year, including high temperature and low temperature weather, to control the temperature within a certain range.

[0039] (3) Use of heat packs + insulated boxes: Heat packs are used by people who are afraid of the cold in winter. They are attached to the inner layer of clothing close to the body and their heating effect brings warmth to people. They were later used in winter transportation to achieve insulation.

[0040] In the implementation process, in addition to the feasibility of the solution, economic benefits are an indispensable consideration. Although the above methods (1) and (2) can be applied to a variety of scenarios, method (3) has advantages over the first two in terms of volume and weight, which can save on logistics and transportation costs. In addition, it has lower material input costs for the same effect in specific scenarios, so its application range is wider.

[0041] Heat packs are generally composed of iron powder, activated carbon, salts, etc., which react chemically with oxygen in the air to release heat. Their heating time can generally reach more than ten hours. However, due to the long time required for logistics transportation, long-lasting heat packs are generally used, with a heating time of up to 72 hours (about three days). However, when the transported goods are insulated based on the above method (3), the heat packs often fail after a few hours. The heat packs stop heating or the heating is not obvious, and they cannot reach the heating time marked on the product, thus affecting the temperature control effect on the transported goods and causing problems such as freezing damage.

[0042] In the process of realizing this invention, the inventor discovered that after the heat patch in the above method (3) fails, it will reheat when it is placed in room temperature air again.

[0043] Specifically, the inventors conducted a corresponding duration of insulation test on method (3) according to the logistics transportation timeliness requirements. During the corresponding duration of the test, the external ambient temperature simulated winter climate conditions, with a value of approximately -30℃ to -20℃. When the heat pack was providing heat, the temperature curve inside the insulation box changed relatively smoothly. When the heat pack was not providing heat or was exhausted (the heat pack failed), the temperature curve inside the box would quickly approach the ambient temperature, at which point the test ended. However, after the test, when the heat pack returned to the normal temperature environment (approximately 20℃ to 30℃), the heat pack would reheat.

[0044] Since heat packs require oxygen to heat up, the initial suspicion was that the relatively sealed insulation chamber resulted in low oxygen levels after a period of heating, leading to a decrease in heat production and reduced heating efficiency. Based on this, three identical sets of heat packs were tested: the first set was directly exposed to room temperature conditions, and the second set was directly exposed to low-temperature conditions. After a period of time, it was found that the first set of heat packs could heat up normally, but the second set, even in an environment with sufficient air, had a temperature approaching ambient temperature (approximately -20°C), indicating that the second set of heat packs was ineffective. The third set of heat packs, under vacuum conditions, did not react; however, when the third set was exposed to air, the reaction initiated.

[0045] Based on the three sets of tests above, it can be seen that the heat pack requires air, but in low-temperature environments, other factors also affect its heating performance. Furthermore, since moisture in the air condenses in low-temperature environments, reducing air humidity, it is suspected that the reduced air humidity is causing the heat pack to malfunction.

[0046] Tests revealed that the heating effect of hand warmers in low-temperature environments is indeed related to humidity. Maintaining the humidity of the hand warmers can effectively improve their heating performance. Based on this, this invention provides a temperature control device that continuously supplies moisture to the hand warmers, enabling them to maintain continuous heating and thus improving their heating effect in low-temperature environments.

[0047] Figure 1 This is a schematic diagram of a temperature control device according to an embodiment of the present invention, such as... Figure 1 As shown, the temperature control device includes: an insulation shell 10 and at least one set of temperature control components; the temperature control components include a heat pack 20 and a humidification section 30; Figure 1 The following example illustrates a temperature control device that includes a set of temperature control components.

[0048] In this embodiment, the temperature control device is specifically a device used in the logistics and transportation field for temperature-controlled packaging of transported goods. Accordingly, the insulated shell 10 has a storage space inside for placing the transported goods; this storage space is closable. For example, the insulated shell 10 includes a top cover plate, which is used to close the storage space. The transported goods may be, for example, cosmetics, fruits and vegetables, live animals, or other items that require insulation and cannot be kept at excessively low temperatures for extended periods.

[0049] The insulation shell 10 can be a shell with a relatively fixed structure, such as... Figure 1 As shown, the insulated shell 10 can be a box structure; for example, the insulated shell 10 can be an insulated cardboard box, an insulated foam box, etc. Alternatively, the insulated shell 10 can also be a flexible shell made of insulating material; for example, the insulated shell 10 can be a flexible insulated bag, etc. This embodiment does not limit the shape or material of the insulated shell 10, as long as it can provide storage space and has an insulating function.

[0050] The heating pad 20 and the humidifier 30 of the temperature control component are both located in the storage space. The humidifier 30 is used to continuously provide moisture to the heating pad 20 when it is heating.

[0051] In this embodiment, in addition to the heat pack 20, the storage space also includes a humidifying unit 30 for humidifying the heat pack 20. When the heat pack 20 is heating, the humidifying unit 30 continuously provides moisture to the heat pack 20, thereby maintaining the humidity of the heat pack 20 within a reasonable range and ensuring that the heat pack 20 can continue to heat. The humidifying unit 30 can be, for example, a small humidifier.

[0052] It is understood that the temperature control component is mainly used to control the temperature in the storage space of the temperature control device in order to avoid the temperature of the storage space being too low. Therefore, the number of temperature control components (i.e. the number of heating pads 20 and humidifying parts 30) can be set according to the actual situation. For example, the larger the storage space of the temperature control device and the higher the temperature requirement, the more temperature control components are needed. The specific number can be determined based on actual needs.

[0053] To verify and demonstrate that keeping the heat pack 20 moist in a low-temperature environment can effectively improve its heating capacity, a test example is provided below, in which three test boxes are tested. All three test boxes use a paper shell with heat preservation function, that is, the heat preservation shell 10 is simulated by the heat preservation cardboard box 101, and the same model of heat pack 20 and simulation box 100 are installed inside. The simulation box 100 is used to simulate the transportation of goods.

[0054] Figure 2 The diagram shows the structural schematics of the three test boxes in the first test example, and also shows the cross-sectional schematics of the three test boxes.

[0055] like Figure 2 As shown, the test box A1 includes: an insulated cardboard box 101, a heat patch 20, and a simulation box 100.

[0056] Test chamber A2 includes: an insulated cardboard box 101, a heat patch 20, and a simulation box 100. That is, test chamber A1 and test chamber A2 have the same structure.

[0057] Test chamber A3 includes: an insulated cardboard box 101, a heat patch 20, two sheets of soaked absorbent paper 301, and a simulation box 100; wherein, the absorbent paper 301 in test chamber A3 contains a certain amount of water. In test chamber A3, the absorbent paper 301 is attached to the heat patch 20.

[0058] Test chamber A1 was placed in a room temperature environment (approximately 26°C), while test chambers A2 and A3 were placed in a low temperature environment (approximately -10°C) and tested. During the test, the internal temperature of each test chamber (specifically, the temperature inside simulation chamber 100, for example, the bottom temperature of simulation chamber 100) and the two ambient temperatures were collected in real time. The temperature curves are shown below. Figure 3 As shown, the horizontal axis represents time, and the vertical axis represents temperature (°C). The results of this test case are shown in Table 1 below.

[0059] Table 1

[0060] Record Name Data points Duration Maximum value (°C) Minimum value (°C) Average value (°C) Test chamber A1 internal temperature 128 4h14m 32.3 30.8 31.9 Test chamber A2 internal temperature 128 4h14m -0.4 -4.0 -3.2 Test chamber A3 internal temperature 128 4h14m 0.8 -3.3 -2.2 Ambient temperature (normal temperature) 128 4h14m 26.2 24.3 25.4 Ambient temperature (low temperature) 128 4h14m -8.3 -8.9 -8.7

[0061] based on Figure 3As shown in Table 1, adding heat packs 20 inside the box can improve the heating effect. Furthermore, using absorbent paper 301 to maintain the humidity of the heat packs 20 can effectively improve their heating effect and extend the heating time.

[0062] The temperature control device provided in this embodiment, in addition to the heat pack 20, also has a humidification section 30 inside the heat insulation shell 10. When the heat pack 20 is heating, the humidification section 30 can continuously provide moisture to the heat pack 20, thereby maintaining the humidity of the heat pack 20. When the temperature control device is in a low temperature environment, even if the original moisture in the air decreases, the humidification section 30 can increase the humidity of the heat pack 20, ensuring that the heat pack 20 can heat normally and continuously, thereby improving the heating efficiency of the heat pack 20.

[0063] In some alternative implementations, such as Figure 4 As shown, the temperature control device also includes a cold storage bag 40; the cold storage bag 40 is located in the storage space and contains a gel and / or liquid cold storage agent.

[0064] In this embodiment, the cold storage bag 40 initially contains a material with cold storage function, such as a gel and / or a liquid cold storage agent. Under low-temperature conditions, the liquid cold storage agent will solidify (phase change), transforming into a solid state. Utilizing the heat-releasing characteristic of the cold storage agent during solidification, the temperature control effect of the temperature control device can be further improved. Combining the heat pack 20 and the cold storage bag 40, it is easier to meet temperature control requirements. The gel can generally be made of polyamide-based materials, which have good thermal insulation properties.

[0065] For example, the cold storage bag 40 can be an ice pack, ice box, etc., and there are no restrictions on the outer shell material of the cold storage bag 40; the main material of the cold storage agent inside the cold storage bag 40 is water. For example, the cold storage agent can be a mixture containing water and salt, forming a simple phase change material with low cost. Of course, the cold storage agent can also be made based on other solvents. This embodiment does not limit the composition of the cold storage agent, as long as it meets the cold storage requirements.

[0066] Optionally, such as Figure 4 As shown, there are multiple cold storage bags 40; the multiple cold storage bags 40 are evenly distributed in the storage space. For example, the multiple cold storage bags 40 are evenly distributed around the heat pack 20 (or humidification section 30), which makes the temperature distribution inside the storage space more uniform and helps to ensure that the humidification section 30 can continuously evaporate moisture.

[0067] Another test example is provided below, in which three test chambers are tested, using ice pack 401 as the cold storage bag 40. All three test chambers use a paper shell with thermal insulation function, i.e., an insulated cardboard box 101 simulates the thermal insulation shell 10, and each contains the same type of ice pack 401 and a simulated box 100. The ice pack 401 initially contains a liquid cold storage agent. Utilizing the characteristic that the cold storage agent releases heat when it solidifies, it achieves a certain degree of insulation while minimizing rapid temperature changes inside the test chamber, facilitating observation.

[0068] Figure 5 The diagram shows the structural schematics of the three test boxes in the second test example, and also shows the cross-sectional schematics of the three test boxes.

[0069] like Figure 5 As shown, test chamber B1 includes: an insulated cardboard box 101, a 1kg ice pack 401, and a simulation chamber 100.

[0070] Test chamber B2 includes: an insulated cardboard box 101, a heat pack 20, a 1kg ice pack 401, and a simulation chamber 100.

[0071] Test chamber B3 includes: an insulated cardboard box 101, a heat patch 20, two sheets of soaked absorbent paper 301, a 1kg ice pack 401, and a simulation chamber 100; wherein, the absorbent paper 301 in test chamber B3 contains a certain amount of water. In test chamber B3, the absorbent paper 301 is attached to the heat patch 20.

[0072] Test chambers B1, B2, and B3 were all placed in a low-temperature environment (approximately -10°C) and tested. During the test, the internal temperature of each test chamber (specifically, the temperature inside simulation chamber 100, for example, the bottom temperature of simulation chamber 100) and the corresponding ambient temperature were collected in real time. The temperature curves are shown below. Figure 6 As shown, the horizontal axis represents time, and the vertical axis represents temperature (°C). The results of this test case are shown in Table 2 below.

[0073] Table 2

[0074] Record Name Data points Duration Maximum value (°C) Minimum value (°C) Average value (°C) Test chamber B1 internal temperature 143 4h44m -6.3 -6.4 -6.3 Test chamber B2 internal temperature 143 4h44m -3.2 -4.7 -4.2 Test chamber B3 internal temperature 143 4h44m -3.1 -3.9 -3.3 Ambient temperature (low temperature) 143 4h44m -9.3 -9.8 -9.5

[0075] based on Figure 6 As shown in Table 2, adding ice packs 401 inside the chamber provides a certain degree of insulation; combining heat packs 20 and ice packs 401 further enhances the insulation effect. Furthermore, using absorbent paper 301 to maintain the humidity of heat packs 20 can further improve the insulation effect of the temperature control device.

[0076] In some alternative implementations, to reduce costs, the humidifier 30 is made of a water-absorbing material; and the humidifier 30 is located within the heat transfer range of the heat pack 20.

[0077] In this embodiment, the humidifying part 30 is made of a water-absorbing material, such as a water-absorbing resin, and the type of water-absorbing material is not limited in this embodiment. The water-absorbing material absorbs a certain amount of water, which gradually evaporates during use, thereby continuously providing moisture to the heat patch 20. Furthermore, when the heat patch 20 heats up, the heat it generates can be transferred to a certain range, referred to as the heat transfer range; the humidifying part 30 made of the water-absorbing material is located within the heat transfer range of the heat patch 20.

[0078] Specifically, when using this temperature control device, for example when using it to transport certain items, a certain amount of water can be added to the humidifying part 30, such as spraying or immersing the humidifying part 30 with water, and the humidifying part 30 can be placed within the heat transfer range of the heat pack 20, so that when the heat pack 20 heats up, the heat it generates can heat the humidifying part 30, ensuring that the humidifying part 30 can continuously evaporate moisture and preventing the humidifying part 30 from freezing in a low-temperature environment.

[0079] The distance between the humidifying part 30 and the heat pack 20 can be set to be less than a preset distance, so that the humidifying part 30 can be located within the heat transfer range of the heat pack 20. Alternatively, a material or device with heat transfer effect can be placed between the humidifying part 30 and the heat pack 20, and attached to the humidifying part 30 and the heat pack 20 respectively, so that the heat generated by the heat pack 20 can also be indirectly transferred to the humidifying part 30.

[0080] Optionally, the humidifying part 30 is attached to the surface of the heat pack 20. By attaching the humidifying part 30 to the surface of the heat pack 20, the heat pack 20 can directly transfer heat to the humidifying part 30, effectively ensuring that the moisture in the absorbent material can continue to evaporate.

[0081] Optionally, the humidifying part 30 has a layered structure to fully receive the heat transferred from the heat pack 20. For example, the layered structure of the humidifying part 30 can fit more fully with the heat pack 20. Specifically, the humidifying part 30 may include one or more layers of absorbent paper 301. The absorbent paper 301 is made of absorbent material and has the functions of absorbing and locking in water. It is not only cost-effective but also helps to maintain the humidity of the heat pack 20.

[0082] To verify and demonstrate that keeping the heat pack 20 moisturized in a low-temperature environment can effectively improve its heating capacity, another test example is provided below, in which three test chambers are tested. All three test chambers have foam shells, i.e., foam box 102 simulates the heat insulation shell 10, and each is equipped with an ice pack 401 inside. The ice pack 401 initially contains liquid cold storage agent. By utilizing the characteristic that the cold storage agent can release heat when it solidifies, it can achieve a certain degree of heat preservation effect while minimizing rapid temperature changes inside the test chamber, which is conducive to observation.

[0083] Figure 7 The diagram shows the structural schematics of the three test boxes in the third test example, and also shows the cross-sectional schematics of the three test boxes.

[0084] like Figure 7 As shown, test box C1 includes: foam box 102 and 1kg ice pack 401.

[0085] Test box C2 includes: foam box 102, 1kg ice pack 401 and a heat pack 20.

[0086] Test chamber C3 includes: a foam box 102, a 1kg ice pack 401, a heat patch 20, and a soaked absorbent paper 301, meaning the absorbent paper 301 in test chamber C3 contains a certain amount of water. Inside test chamber C3, the absorbent paper 301 is in contact with the heat patch 20.

[0087] Test chambers C1, C2, and C3 were all placed in a low-temperature environment of -20℃ and tested. During the test, the internal temperature of each test chamber and the ambient temperature were collected in real time. The temperature curves are shown below. Figure 8 As shown, the horizontal axis represents time, and the vertical axis represents temperature (°C). The results of this test case are shown in Table 3 below.

[0088] Table 3

[0089] Record Name Data points Duration Maximum value (°C) Minimum value (°C) Average value (°C) Test chamber C1 internal temperature 3228 2d5h47m 26.8 -19.6 -9.6 Test chamber C2 internal temperature 3281 2d6h40m 27.8 -3.4 0.4 Test chamber C3 internal temperature 3278 2d6h37m 27.7 1.7 5.9 Ambient temperature 3206 2d5h25m 25.6 -20.5 -18.3

[0090] based on Figure 8 As shown in Table 3, adding heat packs 20 inside the box can improve the heating effect. Furthermore, using absorbent paper 301 to maintain the humidity of the heat packs 20 can effectively improve their heating effect and extend the heating time.

[0091] In this embodiment, the humidifying part 30 is made of absorbent material, which can maintain the humidity of the heat pack 20 at low cost. Furthermore, the humidifying part 30 is located within the heat transfer range of the heat pack 20, effectively preventing it from freezing in low-temperature environments and thus affecting the evaporation of moisture from the absorbent material. By attaching the humidifying part 30 to the surface of the heat pack 20, heat can be directly transferred from the heat pack 20 to the humidifying part 30, effectively ensuring the continuous evaporation of moisture from the absorbent material. Using absorbent paper 301 to provide moisture to the heat pack 20 is low-cost and conducive to widespread adoption.

[0092] In some alternative implementations, the temperature control unit is located on the bottom surface of the storage space; the portion of the storage space above the temperature control unit is used to place transported items. For example... Figure 1 As shown, the heat pack 20 and the humidifier 30 are both located at the bottom of the storage space, and the storage space above them is used to place transported items. In a low-temperature environment, when the heat pack 20 heats up, the cold air flows downward and the hot air flows upward, so the heat pack 20 can provide heat to the transported items better and has a better heat preservation effect.

[0093] Optionally, such as Figure 1 As shown, the humidifying part 30 is located below the heat pack 20. Since the humidifying part 30 contains moisture, such as moisture locked in its absorbent material, placing the humidifying part 30 below the heat pack 20 can prevent the moisture in the humidifying part 30 from contaminating the transported items, and the heat pack 20 can also directly contact the transported items, ensuring the heat transfer effect.

[0094] Optionally, the humidifying part 30 is located on the side of the heat pack 20 away from the nonwoven fabric layer 201.

[0095] Figure 9 A schematic diagram of both sides of the heat patch 20 is shown; as follows: Figure 9 As shown, one side of the heat patch 20 is generally a non-woven fabric layer 201, which ensures that the heating material inside the heat patch can come into contact with the outside air, thereby allowing a chemical reaction to occur and generate heat. If the humidifying part 30, such as the absorbent paper 301, is placed on the non-woven fabric layer 201 of the heat patch 20, it may affect the breathability of the heat patch 20. Placing the humidifying part 30 on the side of the heat patch 20 away from the non-woven fabric layer 201 can prevent the attached humidifying part 30 from affecting the heating effect of the heat patch 20 itself.

[0096] like Figure 9 As shown, the side of the heat pack 20 away from the non-woven fabric layer 201 is a heat-conducting layer 202, which is, for example, aluminum foil. For example, absorbent paper 301 can be attached to the heat-conducting layer 202.

[0097] Optionally, the humidifying part 30 can absorb 20g to 100g of water. For example, when using this temperature control device, a single temperature control component can provide 20g to 100g of water. If the humidifying part 30 absorbs too much water, although the heat pack 20 can still heat up normally, this will increase the weight of the temperature control device, thereby increasing logistics and transportation costs.

[0098] The following is another test example, in which four test boxes are tested; all four test boxes use a paper shell with heat preservation function, that is, the heat preservation shell 10 is simulated by the heat preservation cardboard box 101, and the same type of heat patch 20, ice pack 401 and simulation box 100 are provided inside, which is used to simulate the transportation of goods.

[0099] Figure 10 The diagram shows the structure of the four test boxes in the fourth test example, and also shows the cross-sectional diagram of the four test boxes.

[0100] like Figure 10 As shown, the test chamber D1 includes: an insulated cardboard box 101, a heat patch 20, a 1kg ice pack 401, and a simulation chamber 100. The heat patch 20 has been soaked in water.

[0101] Test box D2 includes: an insulated cardboard box 101, a heat patch 20, two sheets of soaked absorbent paper 301, a 1kg ice pack 401, and a simulation box 100. The absorbent paper 301 and the heat patch 20 are placed side by side, that is, they are not attached together.

[0102] Test box D3 includes: an insulated cardboard box 101, a heat patch 20, two sheets of soaked absorbent paper 301, a 1kg ice pack 401, and a simulation box 100. The absorbent paper 301 is bonded to the non-woven fabric layer 201 of the heat patch 20. Figure 10 In the middle, the upper surface of the heat patch 20 is the surface corresponding to the non-woven fabric layer 201, and the lower surface is the surface corresponding to the heat-conducting layer 202.

[0103] Test box D4 includes: an insulated cardboard box 101, a heat patch 20, two sheets of soaked absorbent paper 301, a 1kg ice pack 401, and a simulation box 100. The absorbent paper 301 is attached to the heat-conducting layer 202 of the heat patch 20.

[0104] In this test case, the absorbent paper 301 in each test chamber has the same properties: the absorbent paper 301 is 13cm*18cm in size, the two sheets of absorbent paper 301 are 2mm thick, and the water absorption capacity is 61g. The heat patch 20 has a 72-hour long-lasting effect, is 195mm*90mm in size, has a non-woven fabric layer 201 on one side and a heat-conducting layer 202 made of aluminum film on the other side.

[0105] Test chambers D1, D2, D3, and D4 were all placed in a low-temperature environment (approximately -10°C) and tested. During the test, the internal temperature of each test chamber (specifically, the temperature inside simulation chamber 100, for example, the bottom temperature of simulation chamber 100) and two ambient temperatures were collected in real time. The temperature curves are shown below. Figure 11 As shown, the horizontal axis represents time, and the vertical axis represents temperature (°C). The results of this test case are shown in Table 4 below.

[0106] Table 4

[0107] Record Name Data points Duration Maximum value (°C) Minimum value (°C) Average value (°C) Test chamber D1 internal temperature 216 7h10m 2.8 -2.8 1.2 Test chamber D2 internal temperature 216 7h10m 0.2 -4.0 -2.4 Test chamber D3 internal temperature 216 7h10m 3.3 -4.2 -1.7 Test chamber D4 internal temperature 216 7h10m 3.4 -1.7 -0.3 Ambient temperature (low temperature) 216 7h10m -9.1 -9.8 -9.5

[0108] based on Figure 11 As shown in Table 4, the placement of the absorbent paper 301 also affects the heating effect of the heat pack 20. Comparing different placement methods, it can be concluded that the heat pack 20 has the best heating effect when the absorbent paper 301 is attached to the heat-conducting layer 202 of the heat pack 20, that is, when the absorbent paper 301 is attached to the side of the heat pack 20 away from the non-woven fabric layer 201.

[0109] The temperature control device provided in this embodiment uses a humidifying section 30 to increase the humidity of the heat pack 20, thereby improving the heating efficiency of the heat pack 20. In low-temperature environments, the humidifying section 30, made of a material that physically locks in water, such as absorbent paper, is placed close to the heat pack 20 to continuously provide humidity. The absorbent material, such as absorbent paper, comes into contact with the non-non-woven fabric layer (e.g., the thermally conductive layer) of the heat pack 20, which not only provides humidity to the heat pack 20, allowing it to continue generating heat, but also allows the heat pack 20 to directly transfer heat to the absorbent paper, preventing it from freezing and ensuring that the absorbent paper can continuously provide humidity. This, in turn, allows the heat pack 20 to continue generating heat, and so on, thereby maintaining a stable temperature inside the chamber.

[0110] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations should all be covered within the protection scope of the present invention.

Claims

1. A temperature control device, characterized in that, include: The insulation shell (10) and at least one set of temperature control components; the temperature control components include a heat pack (20) and a humidification section (30); The insulation shell (10) has a storage space inside for placing transported goods; The heat pack (20) and the humidifier (30) are both located in the storage space. The humidifier (30) is used to continuously provide moisture to the heat pack (20) when it is heating.

2. The temperature control device according to claim 1, characterized in that, The humidification section (30) is made of absorbent material; The humidifying part (30) is located within the heat transfer range of the heat pack (20).

3. The temperature control device according to claim 2, characterized in that, The humidifying part (30) is attached to the surface of the heat pack (20).

4. The temperature control device according to claim 3, characterized in that, The humidifying part (30) is located on the side of the heat pack (20) away from the nonwoven fabric layer (201).

5. The temperature control device according to claim 2, characterized in that, The humidification unit (30) has a water absorption capacity of 20g to 100g.

6. The temperature control device according to any one of claims 2 to 5, characterized in that, The humidifying section (30) includes one or more layers of absorbent paper (301).

7. The temperature control device according to claim 1, characterized in that, The temperature control component is located on the bottom surface of the storage space; the storage space above the temperature control component is used to place transported items.

8. The temperature control device according to claim 7, characterized in that, The humidifying part (30) is located below the heat pack (20).

9. The temperature control device according to claim 1, characterized in that, Also includes: Cold storage bag (40); The cold storage bag (40) is located within the storage space, and the cold storage bag (40) contains a gel and / or a liquid cold storage agent.

10. The temperature control device according to claim 9, characterized in that, The number of the cold storage bags (40) is multiple; Multiple cold storage bags (40) are evenly distributed within the storage space.

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