Elevator temperature control system and method based on bio-based phase change

Abstract

The present application discloses a temperature control system and method for an elevator based on a bio-based phase change, wherein the system comprises a temperature control plate filled with a bio-based phase change material, and the temperature control plate is installed on the inner side wall and / or top wall of the elevator car. The temperature control plate comprises a rectangular bottom plate and a plurality of temperature control units installed on the temperature control plate, wherein the temperature control unit has a second filling cavity, and the second filling cavity is filled with a bio-based phase change material. The advantage of the present application is that the ambient temperature is controlled by utilizing the heat absorption and heat release principle of the bio-based phase change material during phase change, thereby reducing energy consumption.

Description

Technical Field

[0001] The present application relates to the technical field of energy-saving temperature control, and in particular to an elevator temperature control system and method based on bio-based phase change. Background Art

[0002] With the acceleration of urbanization and the increase of high-rise buildings, elevators have become an important means of transportation for people's daily travel. As an indispensable vertical transportation tool in high-rise buildings, the comfort of elevators has attracted more and more attention. Among them, the environment in the elevator, especially the temperature, directly affects the comfort of passengers. The elevator car will cause great discomfort to passengers when the temperature is high in summer or low in winter.

[0003] At present, the temperature adjustment of elevator cars is generally achieved through air conditioning, but the air conditioning system has the following problems:

[0004] (1) Power outage means shutdown. When a power outage occurs in an elevator, the air conditioner will shut down and the temperature in the car will rise rapidly, causing great discomfort to the passengers trapped in the car.

[0005] (2) The air conditioning system has high energy consumption, especially in places with high personnel mobility such as elevators. The air conditioning system consumes high energy and has high operating costs.

[0006] (3) In hot or cold weather, the air conditioner works continuously, making a lot of noise and producing strong wind, which may cause discomfort to some passengers. Secondly, in hot or cold weather, the air conditioning effect is not significant. Summary of the invention

[0007] The present application provides an elevator temperature control system and method based on bio-based phase change, which has the advantage of utilizing the heat absorption and heat release principle of bio-based phase change materials during phase change to control the ambient temperature and reduce energy consumption.

[0008] The technical solution of this application is as follows:

[0009] On the one hand, the present application provides an elevator temperature control system based on bio-based phase change, including a temperature control panel filled with bio-based phase change material, wherein the temperature control panel is installed on the inner side wall and / or top wall of the elevator car.

[0010] Furthermore, the temperature control plate is rectangular and has a plurality of raised structures on one side surface, wherein the raised structures are conical, hemispherical or arched, and the temperature control plate has a first filling cavity, which extends into the raised structures; the first filling cavity is filled with bio-based phase change material.

[0011] Furthermore, the temperature control plate comprises a rectangular bottom plate and a plurality of temperature control units installed on the temperature control plate, wherein the temperature control unit has a second filling cavity, and the second filling cavity is filled with a bio-based phase change material;

[0012] The temperature control unit is provided with a plurality of protruding structures, the second filling cavity extends into the protruding structures, and the protruding structures are conical, hemispherical or arched.

[0013] Furthermore, the bottom plate has a third filling cavity, and the third filling cavity is filled with a bio-based phase change material.

[0014] Furthermore, the bottom plate is provided with a plurality of nesting grooves, the temperature control unit is installed in the nesting grooves, the nesting grooves are rectangular, and the temperature control unit is adapted to the nesting grooves.

[0015] Furthermore, a first heat-conducting member is provided in the third filling cavity, and a first heat-conducting joint extending into the nesting groove is provided on the first heat-conducting member;

[0016] A second heat-conducting member is provided in the second filling cavity, and a second heat-conducting joint extending to the bottom of the temperature control unit is provided on the second heat-conducting member;

[0017] The ends of the first heat conducting head and the second heat conducting head are both provided with plug holes, and heat conducting pipes are arranged in the plug holes of the first heat conducting head and the second heat conducting head.

[0018] Furthermore, it also includes a temperature control unit and a first heat exchange device, the first heat exchange device is arranged outside the elevator car, the second heat exchange device is arranged in the third filling cavity, a pipeline and a compressor are arranged between the first heat exchange device and the second heat exchange device, and the temperature control unit is used to control the compressor; the third filling cavity is provided with a temperature sensor for detecting the temperature of the bio-based phase change material in the third filling cavity.

[0019] Furthermore, the components of the bio-based phase change material include, by weight, 90-98 parts of bio-based fatty acids, 0.5-2 parts of preservatives, 1-8 parts of thermal conductors, and 0.1-2 parts of pigments.

[0020] On the other hand, the present application provides a method for controlling elevator temperature based on bio-based phase change, which is performed using the above-mentioned elevator temperature control system based on bio-based phase change, and includes the following steps:

[0021] S1: Collect temperature data in the elevator car and calculate the daily average temperature of the elevator car , Indicates the average temperature in the elevator car on the kth day; obtains the predicted average temperature of the local area on the second day ;

[0022] S2: Configure the first temperature threshold , the second temperature threshold , first cut-off temperature and the second cut-off temperature , the first cut-off temperature The second cut-off temperature is lower than the melting point of the bio-based phase change material. A temperature higher than the melting point of the bio-based phase change material;

[0023] The predicted average temperature for the next day Above the second temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to drop to the first cut-off temperature ;

[0024] The predicted average temperature for the next day Below the first temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to rise to the second cut-off temperature .

[0025] The predicted average temperature for the next day At the first temperature threshold and the second temperature threshold The compressor does not work when the

[0026] S3: For the first temperature threshold and the second temperature threshold To update:

[0027] Traversal predicted average temperature Above the second temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the second temperature threshold is lowered , otherwise the second temperature threshold is increased :

[0028]

[0029] Among them, δ is the temperature value adjusted each time;

[0030] Traversal predicted average temperature Below the first temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the first temperature threshold is lowered , otherwise increase the first temperature threshold :

[0031] .

[0032] Furthermore, step S2 is performed during a low-peak electricity consumption period.

[0033] In summary, the beneficial effects of this application are:

[0034] 1. This application uses the heat absorption and heat release of bio-based phase change materials during phase change to control temperature. In summer, when the temperature is high, the bio-based phase change materials absorb heat during phase change to cool down during the day, and use the lower temperature at night to complete the phase change and return to a solid state. Within a specific temperature range, the purpose of temperature control can be achieved without consuming electricity;

[0035] 2. The present application controls the temperature of the bio-based phase change material in the third filling chamber by means of the temperature control unit, the first heat exchange device and the compressor, so that when the temperature is too high or too low, the temperature can be adjusted by the phase change of the bio-based phase change material, thereby realizing the cooling and heating functions, and can completely replace the air conditioning equipment in the elevator car;

[0036] 3. The present application uses bio-based phase change materials for temperature control. Therefore, the time period for temperature control of bio-based phase change materials can be flexibly adjusted. For example, when additional power supply is required for temperature control in high temperatures in summer and low temperatures in winter, the compressor can be started during the off-peak hours at night to control the bio-based phase change materials. This can also achieve certain energy storage and power control purposes, further reduce electricity costs, and achieve high efficiency and energy saving effects.

[0037] 4. This application controls the temperature of the bio-based phase change material by predicting the temperature of the next day, realizing automatic control, and by setting the first temperature threshold and the second temperature threshold The update can make the first temperature threshold and the second temperature threshold The configuration value is more accurate, so as to match its specific application scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of a temperature control plate in an embodiment of the present application, wherein the protruding structure on the temperature control plate is hemispherical;

[0039] Figure 2is a schematic diagram of a temperature control plate in an embodiment of the present application, wherein the protruding structure on the temperature control plate is conical;

[0040] Figure 3 It is a schematic diagram of the principle structure of a temperature control plate in one embodiment of the present application;

[0041] Figure 4 It is a schematic diagram of an elevator temperature control method based on bio-based phase change in one embodiment of the present application.

[0042] In the figure, 100, temperature control plate; 200, protruding structure; 300, bottom plate; 301, nesting groove; 400, temperature control unit; 500, first heat-conducting member; 501, first heat-conducting joint; 600, second heat-conducting member; 602, second heat-conducting joint; 700, jack; 800, heat-conducting pipe; 900, first heat exchange device; 901, second heat exchange device. DETAILED DESCRIPTION

[0043] The specific implementation of the present application is described in detail below with reference to the accompanying drawings.

[0044] Embodiment 1: A bio-based phase change based elevator temperature control system comprises a temperature control plate filled with a bio-based phase change material, wherein the temperature control plate is installed on the inner side wall and / or top wall of the elevator car.

[0045] like Figure 1 As shown, the temperature control plate 100 is rectangular, and one side surface thereof has a plurality of protrusion structures 200, and the protrusion structures are conical (such as Figure 2 as shown) or hemispherical (as Figure 1 As shown) or arched, the temperature control plate has a first filling cavity, and the first filling cavity extends into the convex structure; the first filling cavity is filled with a bio-based phase change material.

[0046] The components of the bio-based phase change material include 90-98 parts of bio-based fatty acid, 0.5-2 parts of preservative, 1-8 parts of thermal conductor and 0.1-2 parts of pigment by weight.

[0047] As an example, the bio-based fatty acid is palmitic acid ester, which is a common bio-based fatty acid with a moderate melting point (about 60-65°C) and a large latent heat of phase change, making it suitable for use as a phase change material. It is non-toxic, non-corrosive, and biodegradable, meeting environmental protection requirements.

[0048] The preservative is sodium benzoate, which is a commonly used food-grade preservative that can inhibit the growth of microorganisms and extend the service life of composite materials. Adding sodium benzoate to bio-based fatty acids can improve the stability and safety of the material.

[0049] The thermal conductor is graphene nanoplatelets, which have extremely high thermal conductivity and can effectively improve the thermal conductivity of composite materials. By evenly dispersing graphene nanoplatelets in bio-based fatty acids, the thermal response speed and thermal management capabilities of the material can be enhanced.

[0050] Pigments are used to dye bio-based fatty acids into different colors, which are placed in transparent filling devices and can be used to decorate car panels. Pigments are natural food colorings, which come from plants, minerals or microorganisms, are harmless to the human body, and can provide stable colors. Adding specific natural food colorings to bio-based fatty acids can give the material a specific color without affecting its phase change characteristics and biodegradability.

[0051] Embodiment 2: A bio-based phase change based elevator temperature control system comprises a temperature control plate 100 filled with a bio-based phase change material, wherein the temperature control plate 100 is installed on the inner side wall and / or top wall of the elevator car.

[0052] refer to Figure 3 The temperature control plate 100 includes a rectangular bottom plate 300 and a plurality of temperature control units 400 mounted on the temperature control plate 100, wherein the temperature control unit 400 has a second filling cavity filled with a bio-based phase change material;

[0053] The temperature control unit 400 has a plurality of protruding structures 200 . The second filling cavity extends into the protruding structures 200 . The protruding structures 200 are conical, hemispherical or arched.

[0054] The bottom plate 300 has a third filling cavity therein, and the third filling cavity is filled with a bio-based phase change material.

[0055] The bottom plate 300 is provided with a plurality of nesting grooves 301, and the temperature control unit 400 is installed in the nesting grooves 301. The nesting grooves 301 are rectangular, and the temperature control unit 400 is adapted to the nesting grooves 301. The temperature control unit 400 is detachably arranged in the nesting grooves 301. As an example, the nesting grooves 301 are circular, and the bottom of the temperature control unit 400 is set to an adapted circular shape. It can be understood that in some other embodiments, the nesting grooves 301 are rectangular, and the bottom of the temperature control unit 400 is set to an adapted rectangular shape.

[0056] A first heat-conducting member 500 is disposed in the third filling cavity, and a first heat-conducting joint 501 extending into the nesting groove 301 is disposed on the first heat-conducting member 500;

[0057] A second heat-conducting member 600 is disposed in the second filling cavity, and a second heat-conducting joint 602 extending to the bottom of the temperature control unit 400 is disposed on the second heat-conducting member 600;

[0058] The first heat conducting head and the second heat conducting head are both provided with a plug hole 700 at their ends, and heat conducting pipes 800 are provided in the plug holes 700 of the first heat conducting head and the second heat conducting head.

[0059] As an example, the first heat-conducting member 500 and the second heat-conducting member 600 are both aluminum multi-layer heat-conducting plates, and the heat-conducting pipe 800 is a copper pipe with a heat-conducting medium inside to increase its thermal conductivity.

[0060] Through the detachable combination of the bottom plate 300 and the plurality of temperature control units 400, different temperature control units 400 can be set to different colors to form a pattern, which can be used to control the temperature and form a decoration. The pattern can also be changed by replacing the temperature control unit 400.

[0061] The temperature control unit directly faces the environment inside the car. The raised structure on the temperature control unit can increase the heat dissipation surface and improve the temperature control effect. In specific implementation, considering that the temperature control unit should have a good heat exchange effect, the raised surface of the temperature control unit should be set within a thinner range. Therefore, it is inevitable that it may be damaged due to collision. In the event of damage to the temperature control unit, it can be replaced separately for easy maintenance.

[0062] It also includes a temperature control unit and a first heat exchange device 900. The first heat exchange device 900 is arranged outside the elevator car. A second heat exchange device 901 is arranged in the third filling cavity. A pipeline and a compressor are arranged between the first heat exchange device 900 and the second heat exchange device 901. The temperature control unit is used to control the compressor. A temperature sensor is arranged in the third filling cavity to detect the temperature of the bio-based phase change material in the third filling cavity.

[0063] The components of the bio-based phase change material include 90-98 parts of bio-based fatty acid, 0.5-2 parts of preservative, 1-8 parts of thermal conductor and 0.1-2 parts of pigment by weight.

[0064] The temperature is controlled by utilizing the heat absorption and release of bio-based phase change materials during phase change. When the temperature is high in summer, the bio-based phase change materials can be used to absorb heat during phase change for cooling during the day, and the lower temperature can be used at night to complete the phase change and return to a solid state. Within a specific temperature range, the purpose of temperature control can be achieved without consuming electricity.

[0065] When the temperature is too high in summer or too low in winter, the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit, the first heat exchange device 900 and the compressor. When the temperature is too high or too low, the temperature can be adjusted by the phase change of the bio-based phase change material, thereby realizing the cooling and heating functions, which can completely replace the air-conditioning equipment in the elevator car.

[0066] As an example, the temperature control panels are arranged on the side walls and top walls of the elevator. The temperature in the car is controlled by multiple temperature control panels in multiple directions, which has a good temperature control effect and low noise during the control process.

[0067] Example 3: A method for controlling the temperature of an elevator based on a bio-based phase change, using the elevator temperature control system based on a bio-based phase change as described in Example 2, with reference to Figure 4 , including the following steps:

[0068] S1: Collect the temperature data in the elevator car. The temperature in the elevator car can be obtained by arranging a temperature sensor in the elevator car, or by arranging an environmental monitoring device in the elevator, and calculating the daily average temperature of the elevator car , Indicates the average temperature in the elevator car on the kth day; obtains the predicted average temperature of the local area on the second day , the predicted average temperature of the local area for the next day was obtained through the Internet;

[0069] S2: Configure the first temperature threshold , the second temperature threshold , first cut-off temperature and the second cut-off temperature , the first cut-off temperature The second cut-off temperature is lower than the melting point of the bio-based phase change material. higher than the melting point of the bio-based phase change material; specifically, the bio-based phase change material reaches a first cutoff temperature When the bio-based phase change material reaches the second cut-off temperature When the bio-based phase change material is completely melted.

[0070] The predicted average temperature for the next day Above the second temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to drop to the first cut-off temperature ;

[0071] The predicted average temperature for the next day Below the first temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to rise to the second cut-off temperature .

[0072] The predicted average temperature for the next day At the first temperature threshold and the second temperature threshold The compressor does not work when the

[0073] Step S2 is performed at a low electricity consumption time. Usually, nighttime is a low electricity consumption time. Therefore, step S2 is performed at night, that is, the temperature control unit is started at night to heat or cool the bio-based phase change material.

[0074] S3: For the first temperature threshold and the second temperature threshold To update:

[0075] Traversal predicted average temperature Above the second temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the second temperature threshold is lowered , otherwise the second temperature threshold is increased :

[0076]

[0077] Wherein, δ is the temperature value adjusted each time, and this embodiment adopts 1°C;

[0078] Traversal predicted average temperature Below the first temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the first temperature threshold is lowered , otherwise increase the first temperature threshold :

[0079] .

[0080] The comfortable temperature range may adopt a conventional human body comfortable temperature range. In this embodiment, considering the large passenger flow in the elevator car, the comfortable temperature range is preset to 20°C-30°C.

[0081] Different application scenarios, different elevator car busyness, different passenger flow, the same first temperature threshold and the second temperature threshold This may lead to different temperature control results. The first temperature threshold and the second temperature threshold By updating, specific values ​​that are closer to its application scenario can be obtained to match its specific application scenario.

[0082] The above is only a preferred implementation of the present application. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present application, and these all fall within the scope of protection of the present application.

Claims

1. An elevator temperature control system based on bio-based phase change, characterized in that: comprising a temperature control panel filled with a bio-based phase change material, the temperature control panel being mounted on an interior side wall and / or top wall of an elevator car; The temperature control plate comprises a rectangular bottom plate and a plurality of temperature control units installed on the temperature control plate, wherein the temperature control unit has a second filling cavity filled with a bio-based phase change material; The temperature control unit has a plurality of protrusion structures, the second filling cavity extends into the protrusion structures, and the protrusion structures are conical, hemispherical or arched; The bottom plate has a third filling cavity therein, and the third filling cavity is filled with a bio-based phase change material; The bottom plate is provided with a plurality of nesting grooves, the temperature control unit is installed in the nesting grooves, the nesting grooves are rectangular, and the temperature control unit is adapted to the nesting grooves; A first heat-conducting member is provided in the third filling cavity, and a first heat-conducting joint extending into the nesting groove is provided on the first heat-conducting member; A second heat-conducting member is provided in the second filling cavity, and a second heat-conducting joint extending to the bottom of the temperature control unit is provided on the second heat-conducting member; The ends of the first heat conducting head and the second heat conducting head are both provided with plug holes, and heat conducting pipes are arranged in the plug holes of the first heat conducting head and the second heat conducting head.

2. The elevator temperature control system based on bio-based phase change according to claim 1 is characterized in that: It also includes a temperature control unit and a first heat exchange device, the first heat exchange device is arranged outside the elevator car, a second heat exchange device is arranged in the third filling cavity, a pipeline and a compressor are arranged between the first heat exchange device and the second heat exchange device, and the temperature control unit is used to control the compressor; a temperature sensor is arranged in the third filling cavity for detecting the temperature of the bio-based phase change material in the third filling cavity.

3. The elevator temperature control system based on bio-based phase change according to any one of claims 1-2, characterized in that: The components of the bio-based phase change material include 90-98 parts of bio-based fatty acid, 0.5-2 parts of preservative, 1-8 parts of thermal conductor and 0.1-2 parts of pigment by weight.

4. A method for controlling elevator temperature based on bio-based phase change, characterized in that: The elevator temperature control system based on bio-based phase change according to any one of claims 1 to 3 is applied, comprising the following steps: S1: Collect temperature data in the elevator car and calculate the daily average temperature of the elevator car , Indicates the average temperature in the elevator car on the kth day; obtains the predicted average temperature of the local area on the second day ; S2: Configure the first temperature threshold , the second temperature threshold , first cut-off temperature and the second cut-off temperature , the first cut-off temperature The second cut-off temperature is lower than the melting point of the bio-based phase change material. A temperature higher than the melting point of the bio-based phase change material; The predicted average temperature for the next day Above the second temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to drop to the first cut-off temperature ; The predicted average temperature for the next day Below the first temperature threshold When the temperature of the bio-based phase change material in the third filling cavity is controlled by the temperature control unit to rise to the second cut-off temperature ; The predicted average temperature for the next day At the first temperature threshold and the second temperature threshold The compressor does not work when the S3: For the first temperature threshold and the second temperature threshold To update: Traversal predicted average temperature Above the second temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the second temperature threshold is lowered , otherwise increase the second temperature threshold : ； Among them, δ is the temperature value adjusted each time; Traversal predicted average temperature Below the first temperature threshold Calculate the average daily temperature of the elevator car in the first n natural days of The mean ,Will Compared with the preset comfortable temperature range, if If the temperature is greater than the comfortable temperature range, the first temperature threshold is lowered , otherwise increase the first temperature threshold : 。 5. The elevator temperature control method based on bio-based phase change according to claim 4 is characterized in that: The step S2 is performed during the off-peak hours of electricity consumption.

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