Phase change heat storage heater and use method

Abstract

The present invention provides a phase-change heat storage heater and a method of use. The heater includes a housing, a phase-change heat storage container is suspended in the housing, and an insulation layer is filled between the phase-change heat storage container and the inner wall of the housing; a heat conduction groove is provided at the upper end of the phase-change heat storage container, a liftable heat sink is installed on the housing, and the heat sink is lifted and lowered by a lifting mechanism, and the housing is provided with a protective cover on the outer side of the heat sink; when the heater is working, the heat sink moves downward and is inserted into the heat conduction groove, thereby heating the indoor environment; when the heater is in standby mode and not working, the lower end of the heat sink is separated from the heat conduction groove. The heater of the present invention uses molten salt phase change material for heat storage and heat release. The molten salt phase change material has a large heat capacity and a relatively long heat release time. It can be used for mobile heating without an external power cord, and the heating temperature is controlled by an MCU control module.

Description

Technical Field

[0001] The present invention relates to the field of heaters, and in particular to a phase-change heat storage heater and a method of using the same. Background Art

[0002] A heater is a device used for heating. Traditional heaters include electric heaters, gas heaters, and boiler heaters, most of which are immovable. For example, an oil-filled radiator heater has a short heat release time and must be connected to a power cord. It cannot be placed anywhere indoors. However, when not charging and always in a state of discharging and generating heat, an oil-filled radiator heater's heating time is longer than other electric heaters. Therefore, there are currently no wireless, portable heaters with a long heat release time on the market (i.e., heaters that can generate heat for a longer period of time without being connected to a power cord).

[0003] Molten salt material is a type of heat storage phase change material, which has the advantages of low saturated vapor pressure, large heat capacity, long heat release time, no supercooling and phase separation, approximately isothermal heat absorption and heat release processes, good thermal conductivity and thermal stability.

[0004] Therefore, a phase change heat storage heater can be developed to apply the phase change heat storage and heat release principle to the heater field. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide a phase change heat storage heater and a method of use to overcome the defects in the prior art.

[0007] (2) Technical solution

[0008] In order to solve the technical problem, the present invention provides a phase change heat storage heater and a method of use, the heater includes a box body, a phase change heat storage container is suspended in the box body, and an insulation layer is filled between the phase change heat storage container and the inner wall of the box body; a heat conduction groove is provided at the upper end of the phase change heat storage container, and a liftable heat dissipation block is installed on the box body, and the number of the heat dissipation block is at least one, and the box body is provided with a protective cover on the outside of the heat dissipation block; when the heater is working, the lower end of the heat dissipation block moves downward and is inserted into the heat conduction groove. After the heat dissipation block is inserted into the heat conduction groove, the molten salt medium in the phase change heat storage container can transfer heat to the heat dissipation block, thereby providing heating to the room; when the heater is on standby and not working, the lower end of the heat dissipation block is separated from the heat conduction groove.

[0009] Furthermore, a lifting mechanism for driving the heat dissipation block is installed on the box body, and the lifting mechanism includes a driving motor installed in the box body, a driving gear connected to the driving motor, and a transmission rack meshed with the driving gear, the transmission rack is connected to the heat dissipation block, and the transmission rack is vertically arranged.

[0010] Furthermore, a guide sleeve is installed on the box body, and the transmission rack is slidably installed in the guide sleeve; the box body includes a box cover, the guide sleeve is fixed on the box cover, and the box cover is provided with an avoidance hole for avoiding the heat dissipation block.

[0011] Furthermore, an elastic thermal insulation pad is installed at the avoidance hole or the heat conduction groove; the elastic thermal insulation pad is symmetrically arranged on the avoidance hole or the heat conduction groove.

[0012] Furthermore, the number of the heat dissipation blocks is 2, and the upper ends of the heat dissipation blocks are wavy.

[0013] Furthermore, the guide sleeve is provided with a limited waist-shaped groove, and a connecting rod is installed on the transmission rack, and the connecting rod passes through the limited waist-shaped groove and is connected to the heat dissipation block.

[0014] Furthermore, a charging port and a display screen are installed on the box; the inner cavity of the phase change heat storage container is honeycomb or grid-shaped, and the medium contained in the inner cavity of the phase change heat storage container is molten salt phase change material; and the insulation layer is aerogel.

[0015] Furthermore, the present technical solution also provides a method for using a phase-change thermal storage heater, which is implemented based on the above-mentioned phase-change thermal storage heater, wherein the box has a built-in MCU control module;

[0016] When the heater is working, it specifically includes the following steps: step S01, turning on the heater switch; step S02, inputting the set temperature T1; step S03, the heat sink is heated, the MCU control module controls the drive motor to work, drives the transmission rack and drives the heat sink to move downward, and inserts the heat sink into the heat conduction groove of the phase change heat storage container; step S04, when the indoor real-time ambient temperature T3 rises to the set temperature T1, the drive motor drives the heat sink to move upward and out of the heat conduction groove; step S05, when the indoor real-time ambient temperature T3 drops to the first set threshold, the drive motor drives the heat sink to move downward and reinsert it into the heat conduction groove; step S06, loop, repeating the steps S04 and S05; step S07, shutting down;

[0017] Furthermore, the downward movement of the heat sink is related to the set temperature T1 and the molten salt temperature T2 in the phase-change heat storage container; the higher the set temperature T1, the greater the downward movement of the heat sink driven by the drive motor; the lower the molten salt temperature T2 in the phase-change heat storage container, the greater the downward movement of the heat sink, all of which are controlled by the MCU control module;

[0018] When the heater is just heating up, the indoor real-time ambient temperature T3 rises from the initial ambient temperature T4 to the set temperature T1, and the drive motor drives the heat sink to move upward so that it is separated from the phase change heat storage container; when the indoor real-time ambient temperature T3 drops to a first set threshold, the drive motor drives the heat sink to move downward and insert it into the heat conduction groove; the first set threshold is greater than the initial ambient temperature T4 and less than the set temperature T1; further, the value of the first set threshold is set to be 1-5 degrees Celsius less than the value of the set temperature T1;

[0019] When the molten salt temperature T2 is lower than a second set threshold, the MCU control module outputs a charging alarm signal.

[0020] When the heater is charged, it is charged by connecting a power source to the charging port of the box to store heat in the molten salt medium in the phase change heat storage container; when the heater is turned off, the charging port drives the heat dissipation block to reset upward to the initial position.

[0021] (3) Beneficial effects

[0022] The present invention provides a phase change heat storage heater and a method of use, which have the following advantages over the prior art:

[0023] 1) The heater uses molten salt phase change material for heat storage and heat release. The inner cavity of the phase change heat storage container containing the molten salt material adopts a honeycomb or grid structure to increase the contact area between the inner cavity and the molten salt, effectively solving the thermal balance performance of the molten salt. Its internal heat conduction speed is fast, which can make full use of the heat absorption and release cycle of the molten salt phase change material, effectively increase the heat exchange area with the phase change material, make the temperature distribution uniform, improve the heat transfer efficiency, and quickly and efficiently store or release heat; taking advantage of the long heat release time of the molten salt material, the heater can be moved to any position for heat release after a single heat storage without being connected to an external power cord;

[0024] 2) Heat is provided by inserting the heat dissipation block into the heat conduction groove of the phase change heat storage container. The upper end of the heat dissipation block is wavy, which increases the heat dissipation area and helps to improve the heating efficiency. When in standby mode, the heat dissipation block can be moved upward to separate from the heat conduction groove.

[0025] 3) The heat sink is lifted and lowered by a lifting mechanism, specifically by the meshing movement of the motor and the gear rack. When the heat sink is lifted out of the heat conduction groove, it is sealed by an elastic thermal insulation pad to prevent heat dissipation.

[0026] 4) The MCU control module controls the downward movement of the heat sink as a whole to achieve the purpose of indoor temperature control. When the indoor real-time ambient temperature T3 rises to the set temperature T1, the MCU control module controls the heat sink to move upward out of the heat conduction slot; when the indoor real-time ambient temperature T3 drops to the first set threshold, the MCU control module controls the heat sink to move downward and reinsert into the heat conduction slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a phase-change thermal storage heater according to the present invention;

[0028] Figure 2 This is an exploded view of a phase change thermal storage heater according to the present invention;

[0029] Figure 3 This is a half-section perspective view of a phase change heat storage heater according to the present invention;

[0030] Figure 4 A phase change heat storage heater of the present invention Figure 3 A magnified view of middle A;

[0031] Figure 5 A three-dimensional diagram of a phase-change heat storage heater cover according to the present invention;

[0032] Figure 6 This is a schematic structural diagram of a phase change heat storage heater according to the present invention;

[0033] Figure 7 This is a flowchart of a method for using a phase change thermal storage heater according to the present invention;

[0034] Figure 8 This is a schematic diagram of the temperature of a phase change thermal storage heater of the present invention when it is working;

[0035] The names of the components corresponding to the various figure marks in the figure are: 1. Box body; 2. Phase change heat storage container; 3. Insulation layer; 4. Heat conduction groove; 5. Heat dissipation block; 6. Protective cover; 7. Drive motor; 8. Drive gear; 9. Transmission rack; 10. Guide sleeve; 11. Box cover; 12. Avoidance hole; 13. Elastic insulation pad; 14. Limit waist groove; 15. Connecting rod; 16. Charging port; 17. Display screen. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] Example 1:

[0038] See Figures 1 to 6 The present invention provides a phase-change heat storage heater, which includes a housing 1, in which a phase-change heat storage container 2 is suspended and installed. The medium contained in the inner cavity of the phase-change heat storage container 2 is a molten salt phase-change material; the inner cavity of the phase-change heat storage container 2 is honeycomb-shaped or grid-shaped, which is convenient for increasing the contact area with the molten salt, effectively solving the thermal balance performance of the molten salt, and its internal heat conduction speed is fast, so that the heat absorption and release cycle of the molten salt phase-change material can be fully utilized, the temperature distribution is uniform, the heat transfer efficiency is improved, and heat storage or heat release is carried out quickly and efficiently; refer to Figure 6 , an insulation layer 3 is filled between the phase change heat storage container 2 and the inner wall of the box body 1. In this embodiment, the insulation layer 3 is aerogel, but it can also be other insulation materials; a heat conduction groove 4 is provided on the upper end of the phase change heat storage container 2, and heat is dissipated through the heat conduction groove 4. A heat dissipation block 5 that can be raised and lowered is installed on the box body 1. The number of the heat dissipation block 5 is at least one. The box body 1 is provided with a protective cover 6 on the outside of the heat dissipation block 5. The protective cover 6 is formed with grid holes connected to the external environment, that is, the phase change heat storage container 2 transmits heat through the heat conduction groove 4 and the heat dissipation block 5, and the hot air enters the indoor environment through the grid holes; when the heater is working, the lower end of the heat dissipation block 5 moves downward and is inserted into the heat conduction groove 4. After the heat dissipation block 5 is inserted into the heat conduction groove 4, the molten salt medium in the phase change heat storage container 2 can conduct heat to the heat dissipation block 5 (for heat exchange), thereby providing heat to the room; when the heater is on standby and not working, the lower end of the heat dissipation block 5 is separated from the heat conduction groove 4. See Figure 1 and Figure 2 , rollers are provided at the bottom of the box 1; the molten salt phase change material has the advantages of large heat capacity, long discharge time, and good thermal stability. Therefore, after the phase change heat storage container 2 has completed heat storage, it can be moved and used, and can be moved and placed to any position in the room, which is highly practical.

[0039] The heat sink 5 can be in the form of a sheet, a square array, or a cylindrical array. In this embodiment, the heat sink 5 is in the form of a sheet. In this embodiment, there are two heat sinks 5, and the upper end of the heat sink 5 is wavy. The advantage of the wavy structure is that it can increase the heat dissipation area of ​​the heat sink 5, thereby facilitating heat dissipation to the indoor environment.

[0040] See Figure 3 and Figure 4The housing 1 is provided with a lifting mechanism for driving the heat sink 5. The lifting mechanism includes a driving motor 7 installed in the housing 1, a driving gear 8 connected to the driving motor 7, and a transmission rack 9 meshing with the driving gear 8. The transmission rack 9 is connected to the heat sink 5 and is arranged vertically. When the driving motor 7 is working, it drives the driving gear 8 to rotate, thereby driving the transmission rack 9 to move up and down in the vertical direction. The heat sink 5 is fixedly connected to the transmission rack 9 by a connecting rod 15. Therefore, the rising and falling movement of the heat sink 5 is achieved through the meshing movement of the driving motor 7 and the gear rack. When the heat sink 5 rises and disengages from the heat conduction groove 4 of the phase change heat storage container 2, the heater is in a standby state (the heat sink 5 is also disengaged from the heat conduction groove 4 when the heater is turned off). When the heat sink 5 falls and is inserted into the heat conduction groove 4, the heat sink 5 conducts heat and the heater is in a working heat release state.

[0041] See Figure 4 and Figure 5 The box body 1 is provided with a guide sleeve 10, in which the transmission rack 9 is slidably mounted. The box body 1 includes a box cover 11, on which the guide sleeve 10 is fixed. The box cover 11 is provided with a relief hole 12 for avoiding the heat sink 5. Elastic heat insulation pads 13 are installed at the relief hole 12 or the heat conduction groove 4. The elastic heat insulation pads 13 are symmetrically arranged on the relief hole 12 or the heat conduction groove 4. In this embodiment, refer to Figure 6 The elastic heat-insulating pad 13 is arranged at the avoidance hole 12. When the heat sink 5 rises and escapes from the avoidance hole 12, the symmetrically arranged elastic heat-insulating pad 13 seals the avoidance hole 12 to isolate the heat source; Figure 6 In this embodiment, when the heat dissipation block 5 is separated from the avoidance hole 12, the elastic thermal insulation pad 13 can simultaneously seal the heat conduction groove 4.

[0042] See Figure 4 and Figure 5 The guide sleeve 10 is provided with a limited waist-shaped groove 14; a connecting rod 15 is installed on the transmission rack 9, and the connecting rod 15 passes through the limited waist-shaped groove 14 and is connected to the heat sink 5; the connecting rod 15 moves up and down in the limited waist-shaped groove 14, and the upward and downward travel of the transmission rack 9 and the heat sink 5 is limited by the limited waist-shaped groove 14.

[0043] See Figure 1The housing 1 is provided with a charging port 16 and a display screen 17. The display screen 17 is used to display the set temperature T1 and the real-time indoor ambient temperature T3. The driving motor 7 is connected to a lithium battery, which is connected to the MCU control module in the housing 1. When the power cord is not connected externally for heat dissipation, the driving motor 7 is powered by the lithium battery to control the lifting and lowering of the heat dissipation block 5. A graphene heating module (not shown in the figure) connected to the charging port 16 is installed at the bottom of the phase change heat storage container 2. The graphene heating module can use wireless electromagnetic charging and heat storage (existing technology, not an improvement point of this patent), or it can be connected to a power supply at the charging port 16 for wired charging and heat storage. This embodiment mainly uses the charging port 16 as the main method for charging and heat storage.

[0044] The heater of this embodiment utilizes the principle that molten salt phase change material has a longer heating time, and applies the molten salt heat storage and heat release principle to the heater equipment. Therefore, compared with traditional heaters, it can extend the heat release time as much as possible without an external power cord after heat storage, and to a certain extent realizes the function of wireless use. After heat storage is completed, it can be moved to any position in the room without the need for too frequent heating and energy storage.

[0045] Example 2:

[0046] See Figure 7 This embodiment provides a method for using a phase-change thermal storage heater. Based on the phase-change thermal storage heater of the first embodiment, the box 1 has a built-in MCU control module for controlling the drive motor 7 to drive the heat sink 5 to rise and fall;

[0047] When the heater works, it includes the following steps:

[0048] Step S01, turning on the heater switch;

[0049] Step S02, inputting a set temperature T1;

[0050] Step S03: The heat sink generates heat, and the MCU control module controls the drive motor 7 to work, driving the transmission rack 9 and driving the heat sink 5 to move downward, inserting the heat sink 5 into the heat conduction groove 4 of the phase change heat storage container 2;

[0051] Step S04: When the indoor real-time ambient temperature T3 rises to the set temperature T1, the driving motor 7 drives the heat sink 5 to move upward and out of the heat conduction groove 4;

[0052] Step S05: When the indoor real-time ambient temperature T3 drops to a first set threshold, the driving motor 7 drives the heat sink 5 to move downward and reinsert it into the heat conduction groove 4;

[0053] Step S06, loop, repeating steps S04 and S05;

[0054] Step S07, shut down the machine, and the MCU control module controls the driving motor 7 to drive the heat sink 5 to reset upward to the initial position.

[0055] In step S04, when the heater just starts heating, the real-time indoor ambient temperature T3 rises from the initial ambient temperature T4 to the set temperature T1. The first set threshold is greater than the initial ambient temperature T4 and less than the set temperature T1. In this embodiment, the value of the first set threshold is set to be 1-5 degrees Celsius lower than the set temperature T1, preferably 2 degrees Celsius lower than the set temperature T1.

[0056] Combined with attachment Figure 7 and Figure 8 For example: when in use, the set temperature T1 is set to 30 degrees Celsius. The first set threshold value at this time is set to 28 degrees Celsius by default. If the initial indoor ambient temperature T4 is detected to be 5 degrees Celsius; when the heater is working, the MCU control module controls the drive motor 7 to drive the heat sink 5 to move down and insert it into the heat conduction groove 4. The heat is transferred to the room through the heat sink 5 for heating. At this time, the indoor real-time ambient temperature T3 gradually rises from the initial ambient temperature of 10 degrees Celsius. When the indoor real-time ambient temperature T3 rises to the set 30 degrees Celsius, the MCU control module controls the drive motor 7 to drive the heat sink 5 out of the heat conduction groove 4; when the indoor real-time ambient temperature T3 falls back to the first set threshold value of 28 degrees Celsius, the MCU control module controls the heat sink 5 to move down and reinsert it into the heat conduction groove 4, and the downward movement of the heat sink 5 is controlled by the MCU control module.

[0057] Among them, the downward displacement of the heat sink 5 is related to the set temperature T1 and the molten salt temperature T2 in the phase change heat storage container 2; the higher the set temperature T1, the greater the downward displacement of the heat sink 5 driven by the drive motor 7; the lower the molten salt temperature T2 in the phase change heat storage container 2, the greater the downward displacement of the heat sink 5, all of which are controlled by the MCU control module; when the molten salt temperature T2 is lower than the second set threshold, the MCU control module outputs a charging alarm signal (this function is mainly used in scenarios where no external power cord is connected). In this embodiment, the value of the second set threshold is 40 degrees Celsius (it can also be set to 35 degrees Celsius or other temperatures). The downward displacement of the heat sink 5 is also related to the real-time indoor ambient temperature T3. The closer the real-time indoor ambient temperature T3 is to the set temperature T1, the smaller the downward displacement of the heat sink 5.

[0058] When the heater is charged, it is charged by connecting the power supply at the charging port 16 of the box body 1 to store heat in the molten salt medium in the phase change heat storage container 2; when shut down, the charging port 16 drives the heat dissipation block 5 to reset upward to the initial position.

[0059] The MCU control module of this embodiment can also be implanted with a timed charging and energy storage function. At night, especially during off-peak hours, charging and heat storage are performed through intelligent control of the MCU control module.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A phase change heat storage heater, comprising a housing (1), characterized in that: A phase-change heat storage container (2) is suspended in the box (1), and a heat-insulating layer (3) is filled between the phase-change heat storage container (2) and the inner wall of the box (1); a heat-conducting groove (4) is provided at the upper end of the phase-change heat storage container (2); a heat-dissipating block (5) that can be lifted and lowered is installed on the box (1), and the number of the heat-dissipating block (5) is at least one; the box (1) is provided with a protective cover (6) on the outer side of the heat-dissipating block (5); when the heater is working, the lower end of the heat-dissipating block (5) moves downward and is inserted into the heat-conducting groove (4); when the heater is on standby and not working, the heat-dissipating block (5) is lifted and lowered. The lower end is separated from the heat conduction groove (4); a lifting mechanism for driving the heat dissipation block (5) is installed on the box body (1), and the lifting mechanism includes a driving motor (7) installed in the box body (1), a driving gear (8) connected to the driving motor (7), and a transmission rack (9) meshed with the driving gear (8), the transmission rack (9) is connected to the heat dissipation block (5), and the transmission rack (9) is vertically arranged; the inner cavity of the phase change heat storage container (2) is honeycomb-shaped or grid-shaped, and the medium contained in the inner cavity of the phase change heat storage container (2) is a molten salt phase change material; The box (1) is equipped with an MCU control module; when the heater is working, the following steps are included: step S01, turning on the heater switch; step S02, inputting the set temperature T1; step S03, the heat sink generates heat, the MCU control module controls the drive motor (7) to work, drives the transmission rack (9) and drives the heat sink (5) to move downward, and inserts the heat sink (5) into the heat conduction groove (4) of the phase change heat storage container (2); step S04, when the indoor real-time ambient temperature T3 rises to the set temperature T1, the drive motor (7) drives the heat sink (5) to move upward and out of the heat conduction groove (4); step S05, when the indoor real-time ambient temperature T3 drops to the first set threshold, the drive motor (7) drives the heat sink (5) to move upward and out of the heat conduction groove (4); The block (5) moves downward and is reinserted into the heat conduction groove (4); step S06, loop, repeating the steps S04 and S05; step S07, shutting down; the downward movement of the heat dissipation block (5) is related to the set temperature T1 and the molten salt temperature T2 in the phase change heat storage container (2); the higher the set temperature T1, the greater the downward movement of the heat dissipation block (5) driven by the drive motor (7); the lower the molten salt temperature T2 in the phase change heat storage container (2), the greater the downward movement of the heat dissipation block (5), all of which are controlled by the MCU control module; the value of the first set threshold is set to be 1-5 degrees Celsius less than the value of the set temperature T1; when the molten salt temperature T2 is lower than the second set threshold, the MCU control module outputs a charging alarm signal.

2. The phase change thermal storage heater according to claim 1, characterized in that: A guide sleeve (10) is installed on the box body (1), and the transmission rack (9) is slidably installed in the guide sleeve (10); the box body (1) includes a box cover (11), the guide sleeve (10) is fixed on the box cover (11), and the box cover (11) is provided with an avoidance hole (12) for avoiding the heat dissipation block (5).

3. The phase change thermal storage heater according to claim 2, characterized in that: An elastic heat-insulating pad (13) is installed at the avoidance hole (12) or the heat-conducting groove (4); the elastic heat-insulating pad (13) is symmetrically arranged on the avoidance hole (12) or the heat-conducting groove (4).

4. The phase change thermal storage heater according to claim 1, characterized in that: The number of the heat dissipation blocks (5) is two, and the upper ends of the heat dissipation blocks (5) are wavy.

5. The phase change thermal storage heater according to claim 2, characterized in that: The guide sleeve (10) is provided with a limited waist-shaped groove (14), and a connecting rod (15) is installed on the transmission rack (9), and the connecting rod (15) passes through the limited waist-shaped groove (14) and is connected to the heat dissipation block (5).

6. The phase change thermal storage heater according to claim 3, characterized in that: The box (1) is equipped with a charging port (16) and a display screen (17); the driving motor (7) is connected to a lithium battery; the thermal insulation layer (3) is aerogel; and a graphene heating module connected to the charging port (16) is installed at the bottom of the phase change heat storage container (2).

7. The phase change thermal storage heater according to claim 1, characterized in that: When charging, the power supply is connected to the charging port (16) of the box (1) for charging; when shutting down, the charging port (16) drives the heat dissipation block (5) to reset upward to the initial position.

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