Electrochromic variable-emissivity electrocaloric refrigeration unit and device

Abstract

The invention belongs to the technical field of building refrigeration, and particularly relates to an electrochromic variable-emissivity electrocaloric refrigeration unit and device, comprising: a housing assembly of a sealed structure; the electrocaloric radiation refrigeration plate assembly is arranged in the middle of the inner side of the shell; the hot end phase change material assembly is arranged on the upper portion of the inner side of the shell, a first gap is formed between the hot end phase change material assembly and the electrocaloric radiation refrigeration plate assembly, and a first electric field is arranged in the first gap; and the cold end phase change material assembly is arranged on the lower portion of the inner side of the shell, a second gap is formed between the cold end phase change material assembly and the electrocaloric radiation refrigeration plate assembly, and a second electric field is arranged in the second gap. The air conditioner is simple in structure, and a refrigerant and a refrigerant pipeline are not needed; the radiation structure is thin, can be fixed on a ceiling or a wall, is small in occupied space, can be automatically mounted and dismounted according to actual requirements, and is high in convenience. The electric card refrigeration only depends on electric energy for refrigeration, and the device does not have ventilation inside and is totally closed, so that the noise is lower, and the sanitary condition is higher.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building refrigeration, and particularly relates to an electrochromic emissivity electrocardia refrigeration unit and device. BACKGROUND

[0002] The existing building refrigeration technology mainly relies on traditional compression refrigeration systems or fixed radiation refrigeration devices, and these technologies have significant limitations in practical application.

[0003] The traditional compression refrigeration system needs a complex refrigerant circulation pipeline, occupies a large amount of building space, has a refrigerant leakage risk, and has a large operating noise, and is difficult to meet the needs of places such as hospitals and laboratories that have strict requirements on noise and hygiene. According to the defects of the traditional compression refrigeration system, it is necessary to study a refrigeration device with high efficiency and small size. SUMMARY

[0004] The purpose of the present application is to provide an electrochromic emissivity electrocardia refrigeration unit and device to solve the above problems.

[0005] To achieve the above purpose, the present application provides the following solutions:

[0006] An electrochromic emissivity electrocardia refrigeration unit comprises:

[0007] A shell assembly, which is a sealed structure;

[0008] An electrocardia radiation refrigeration plate assembly is arranged in the middle part of the inner side of the shell;

[0009] A hot-end phase change material assembly is arranged in the upper part of the inner side of the shell, a first gap is arranged between the hot-end phase change material assembly and the electrocardia radiation refrigeration plate assembly, and a first electric field is arranged in the first gap;

[0010] A cold-end phase change material assembly is arranged in the lower part of the inner side of the shell, a second gap is arranged between the cold-end phase change material assembly and the electrocardia radiation refrigeration plate assembly, and a second electric field is arranged in the second gap.

[0011] Optionally, the shell assembly comprises a shell, an opening is arranged on one side of the shell, and a baffle is fixedly connected to the opening.

[0012] Optionally, the electrocardia radiation refrigeration plate assembly comprises:

[0013] An electrocardia radiation refrigeration plate is fixedly arranged in the middle part of the shell.

[0014] Optionally, an electrocardia radiation refrigeration plate slot is fixedly arranged in the middle part of the inner side of the shell, and the electrocardia radiation refrigeration plate is fixed to the shell by being inserted into the electrocardia radiation refrigeration plate slot.

[0015] Optionally, the hot-end phase change material assembly comprises a first partition plate fixed in the shell, the first partition plate and the inner wall of the shell together form a first phase change material cavity for filling the hot-end phase change material, and the first phase change material cavity is located on the upper inner side of the shell.

[0016] Optionally, the cold-end phase change material assembly comprises a second partition plate fixed in the shell, the second partition plate and the inner wall of the shell together form a second phase change material cavity for filling the cold-end phase change material, and the second phase change material cavity is located on the lower inner side of the shell.

[0017] Optionally, the first electric field comprises two hot-end ETEF films arranged in the first gap, one of the hot-end ETEF films is fixed to the bottom of the first partition plate, and the other hot-end ETEF film is fixed to the top of the electrically cooled radiation refrigeration plate; the two hot-end ETEF films are respectively electrically connected to the positive and negative electrodes of an electric field generator, and the electric field generator cooperates with the two hot-end ETEF films in the first gap to form the first electric field.

[0018] Optionally, the second electric field comprises two cold-end ETEF films arranged in the second gap, one of the cold-end ETEF films is fixed to the top of the second partition plate, and the other cold-end ETEF film is fixed to the bottom of the electrically cooled radiation refrigeration plate; the two cold-end ETEF films are respectively electrically connected to the positive and negative electrodes of another electric field generator, and another electric field generator cooperates with the two cold-end ETEF films in the second gap to form the second electric field.

[0019] Optionally, the hot-end phase change material and the cold-end phase change material are both paraffin.

[0020] An electrochromic emissivity electrically cooled radiation refrigeration device comprises at least one electrochromic emissivity electrically cooled radiation refrigeration unit.

[0021] Compared with the prior art, the present application has the following advantages and technical effects:

[0022] The application adopts the electric card element to carry out refrigeration, the system COP is high, is more energy-saving and convenient control; adopts the radiation heat transfer structure, controls the emissivity of ETEF through the voltage and then controls the heat transfer process, can realize the unidirectionality of the internal heat transfer process, and the radiation heat transfer can greatly reduce the unnecessary heat transfer caused by the heat conduction type; the electric field generator is adopted to control the refrigeration process of the electric card refrigeration device, can realize the automatic or manual control of the refrigeration power intensity and the refrigeration rate according to the actual demand; the refrigeration demand of the local space can be met, the application structure is simple, does not need refrigerant and refrigerant pipeline; the radiation structure is thin, can be fixed on the ceiling or wall, the land space is smaller, and can be installed and disassembled according to the actual demand, the convenience is high; the electric card refrigeration only relies on the electric energy to carry out refrigeration, compared with other energy is more stable and efficient, and the device does not contain ventilation, is fully enclosed, the noise is lower, and the sanitary condition is also higher. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor under the premise of the drawings:

[0024] Figure 1 It is a structural schematic diagram of the application;

[0025] Figure 2 It is a structural schematic diagram of the shell of the application;

[0026] Figure 3 It is a structural schematic diagram of the baffle of the application;

[0027] Figure 4 It is a schematic diagram of the electric field generator 12 and the ETEF film connection of the application;

[0028] Figure 5 It is a structural diagram of the electrically variable emissivity electric card refrigeration device composed of multiple electrically variable emissivity electric card refrigeration units of the application;

[0029] Figure 6 It is a circuit connection diagram of adjacent two electrically variable emissivity electric card refrigeration units of the application;

[0030] 1, shell; 2, hot end phase change material; 3, hot end ETEF film; 4, electric card radiation refrigeration plate; 5, cold end ETEF film; 6, cold end phase change material; 12, electric field generator; 15, infrared distance measuring and temperature measuring device; 16, electric card radiation refrigeration plate slot. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0033] With reference to Figures 1 to 6 The present application discloses an electrocaloric emissivity electrocaloric refrigeration unit, comprising:

[0034] A shell assembly, which is a sealed structure;

[0035] An electrocaloric radiation refrigeration plate assembly arranged at the middle part of the inner side of the shell;

[0036] A hot-end phase change material assembly arranged at the upper part of the inner side of the shell, and a first gap is arranged between the hot-end phase change material assembly and the electrocaloric radiation refrigeration plate assembly, and a first electric field is arranged in the first gap;

[0037] A cold-end phase change material assembly arranged at the lower part of the inner side of the shell, and a second gap is arranged between the cold-end phase change material assembly and the electrocaloric radiation refrigeration plate assembly, and a second electric field is arranged in the second gap.

[0038] The present application uses an electrocaloric element to perform refrigeration, has a high system COP, is more energy-saving and convenient to control, uses a radiation heat transfer structure, controls the emissivity of ETEF and further controls the heat transfer process through voltage control, can realize the unidirectionality of the internal heat transfer process, and can greatly reduce the unnecessary heat transfer caused by the heat conduction type through the use of radiation heat transfer; the refrigeration process of the electrocaloric refrigeration device is controlled by an electric field generator, and the refrigeration power intensity and the refrigeration rate can be automatically or manually controlled according to actual needs; the refrigeration demand of a local space can be met, and refrigerant and refrigerant pipelines are not needed; the radiation structure is relatively thin, can be fixed on a ceiling or a wall, has a relatively small floor space, and can be installed and disassembled according to actual needs, and has high convenience; the electrocaloric refrigeration only relies on electric energy to perform refrigeration, is more stable and efficient compared to other energy sources, and the device is completely closed and does not contain ventilation, has lower noise, and has higher sanitary conditions.

[0039] As an optional embodiment, the shell assembly comprises a shell 1, and an opening is arranged on one side of the shell 1, and a baffle is fixedly connected to the opening.

[0040] As an optional embodiment, the electrocaloric radiation refrigeration plate assembly comprises:

[0041] An electrically cooled radiative panel 4 is fixedly arranged in the middle of the housing 1.

[0042] As an optional embodiment, an electrically cooled radiative panel slot 16 is fixedly arranged in the middle of the inner side of the housing 1, and the electrically cooled radiative panel 4 is inserted into the electrically cooled radiative panel slot 16 and fixed with the housing 1.

[0043] As an optional embodiment, the hot-end phase-change material assembly comprises a first partition plate fixedly arranged in the housing 1, and the first partition plate and the inner wall of the housing 1 jointly form a first phase-change material cavity for filling the hot-end phase-change material 2, which is located at the upper part of the inner side of the housing 1.

[0044] As an optional embodiment, the cold-end phase-change material assembly comprises a second partition plate fixedly arranged in the housing 1, and the second partition plate and the inner wall of the housing 1 jointly form a second phase-change material cavity for filling the cold-end phase-change material 6, which is located at the lower part of the inner side of the housing 1.

[0045] As an optional embodiment, the first electric field comprises two hot-end ETEF films 3 arranged in the first gap, one of which is fixedly connected with the bottom of the first partition plate, and the other of which is fixedly connected with the top of the electrically cooled radiative panel 4; the two hot-end ETEF films 3 are respectively electrically connected with the positive and negative electrodes of an electric field generator 12, and the electric field generator 12 cooperates with the two hot-end ETEF films 3 in the first gap to form the first electric field.

[0046] As an optional embodiment, the second electric field comprises two cold-end ETEF films 5 arranged in the second gap, one of which is fixedly connected with the top of the second partition plate, and the other of which is fixedly connected with the bottom of the electrically cooled radiative panel 4; the two cold-end ETEF films 5 are respectively electrically connected with the positive and negative electrodes of another electric field generator 12; and the other electric field generator 12 cooperates with the two cold-end ETEF films 5 in the second gap to form the second electric field.

[0047] As an optional embodiment, the hot-end phase-change material 2 and the cold-end phase-change material 6 are both paraffin.

[0048] The refrigeration unit is made of the housing 1, the electrically cooled radiative panel 4, the ETEF material, the phase-change material, and the electric field generator.

[0049] The specific manufacturing steps are as follows:

[0050] According to the refrigeration requirements, the geometric size of the electrically cooled radiative panel 4 is determined, the upper and lower surfaces of the electrically cooled radiative panel 4 that meet the size requirements are respectively covered with the hot-end ETEF film 3 and the cold-end ETEF film 5, and the electrically cooled radiative panel 4 is obtained.

[0051] The shell 1 is reasonably designed according to the geometric size of the electric card radiation refrigeration plate 4, and the shell 1 is sleeved outside the electric card radiation refrigeration plate 4. The size of the shell 1 is further determined based on the geometric size of the electric card radiation refrigeration unit.

[0052] Draw a drawing, and make the shell 1 and the baffle according to the drawing respectively.

[0053] The shell 1 is a semi-closed structure. The space separated by the first partition plate in the upper part is a hot-end phase change material storage space. The middle part is reserved for the electric card radiation refrigeration plate slot 16. The space separated by the second partition plate in the lower part is a cold-end phase change material storage space.

[0054] After all the components are assembled, a baffle is connected to become a fully closed structure.

[0055] Finally, the lower surface of the lower plate of the space storing the hot-end phase change material in the container and the upper surface of the upper plate of the space storing the cold-end phase change material are respectively attached with the hot-end ETEF film 3 and the cold-end ETEF film 5.

[0056] The electric card radiation refrigeration plate 4 covered with the ETEF film is inserted into the electric card radiation refrigeration plate slot 16. Then, the hot-end paraffin is filled into the first phase change material cavity, and the cold-end paraffin is filled into the first phase change material cavity. Then, the positive and negative electrodes of the electric field generator 12 are connected to the surfaces of the two hot-end ETEF films 3 / cold-end ETEF films 5 through connecting electric wires. Finally, the baffle is connected (such as welded) with the shell 1 and sealed.

[0057] The frequency and intensity of the electric field are set by the electric field generator 12. The voltage control frequency between the upper and lower ETEF films in the first electric field / second electric field is the same as the electric field frequency, that is, the voltage control settings of the hot-end ETEF film 3 on the first partition plate and the upper surface of the electric card radiation refrigeration plate 4 are completely the same, and the voltage control settings of the cold-end ETEF film 5 on the second partition plate and the lower surface of the electric card radiation refrigeration plate 4 are completely the same. However, the voltage control of the first electric field is half a period later than that of the second electric field.

[0058] An electrochromic emissivity electric card refrigeration device comprises at least one electrochromic emissivity electric card refrigeration unit.

[0059] The first electric field of adjacent two electrochromic emissivity electric card refrigeration units is electrically connected, and the second electric field of adjacent two electrochromic emissivity electric card refrigeration units is electrically connected.

[0060] The electrochromic emissivity electric card refrigeration device is composed of a plurality of electrochromic emissivity electric card refrigeration units distributed as needed.

[0061] In the present application, the refrigeration control is performed according to the temperature of the heat source, and the radiation control is performed by setting the infrared distance measuring and temperature measuring device 15 in the scene. Among them, the refrigeration control is to adjust the electric field strength and frequency of the electric field generator 12, which is divided into three grades.

[0062] The infrared distance measuring and temperature measuring device 15 is fixed on the bottom of the shell 1.

[0063] Further, one end of the electrocaloric refrigeration unit can be arranged on the interior facade or ceiling of the wall through the telescopic rod, and the other end of the electrocaloric refrigeration unit is hinged to the interior facade or ceiling of the wall. The slope of each unit is controlled by controlling the length of each telescopic pipe, thereby controlling the curvature of the entire device to realize directional radiation.

[0064] One end of the telescopic rod is hinged to the building, and the other end of the telescopic rod is hinged to the end of the electrocaloric refrigeration unit.

[0065] By controlling the telescopic length of the telescopic rod, different slopes of the electrocaloric refrigeration unit are realized.

[0066] Further, the refrigeration and directional radiation control modes are both divided into automatic mode and manual mode.

[0067] In the manual refrigeration mode, the user can set the refrigeration rate by setting the electric field strength and frequency, and in the manual directional radiation mode, the user can adjust by setting the telescopic length of the telescopic rod.

[0068] The electrocaloric refrigeration device with variable emissivity of the sub-space thermal environment directional regulation has the following advantages:

[0069] The electrocaloric element is used for refrigeration, the system COP is high, and it is more energy-saving and convenient to control;

[0070] The radiation heat transfer structure is adopted, the emissivity of ETEF is controlled by voltage, and then the heat transfer process is controlled, the unidirectionality of the internal heat transfer process can be realized, and the unnecessary heat transfer caused by the heat conduction type can be greatly reduced;

[0071] The mechanical transmission structure is adopted to change the curvature of the radiation surface, which can realize automatic or manual control of directional radiation according to actual needs, and the refrigeration efficiency is higher;

[0072] The electric field generator is used to control the refrigeration process of the electrocaloric refrigeration device, which can realize automatic or manual control of refrigeration power intensity and refrigeration rate according to actual needs;

[0073] It can meet the refrigeration demand of local space without refrigerant and refrigerant pipeline; the radiation structure is thin, which can be fixed on the ceiling or wall, occupies small space, and can be installed and disassembled according to actual needs, and the convenience is high;

[0074] The electric refrigeration only relies on electric energy to carry out refrigeration, is more stable and efficient compared to other energy, and does not contain ventilation inside the device, is fully closed, is lower in noise, and is higher in sanitary condition, and compared to other refrigeration ends, the application has greater advantages in some refrigeration occasions which are higher in noise and sanitary requirement.

[0075] In the description of the present application, it is to be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0076] The above-described embodiments are only used to describe the preferred modes of the present application, and are not used to limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application defined by the claims.

Claims

1. An electrochromic emissivity electrocaloric refrigeration unit, characterized in that, The application relates to an electrocaloric radiative cooling device. The application comprises: a shell assembly, which is a sealed structure; an electrocaloric radiative cooling plate assembly arranged in the middle of the inner side of the shell; a hot-end phase change material assembly arranged in the upper part of the inner side of the shell, a first gap being arranged between the hot-end phase change material assembly and the electrocaloric radiative cooling plate assembly, and a first electric field being arranged in the first gap; 2. An electrochromic emissivity electrocaloric refrigeration unit according to claim 1, characterized in that: a cold-end phase change material assembly arranged in the lower part of the inner side of the shell, a second gap being arranged between the cold-end phase change material assembly and the electrocaloric radiative cooling plate assembly, and a second electric field being arranged in the second gap.

3. An electrochromic emissivity electrocaloric refrigeration unit according to claim 2, wherein, The shell assembly comprises a shell (1), one side of which is provided with an opening, and a baffle is fixed to the opening. The electrocaloric radiative cooling plate assembly comprises:

4. An electrochromic emissivity electrocaloric refrigeration unit according to claim 3, wherein: an electrocaloric radiative cooling plate (4) fixedly arranged in the middle of the shell (1).

5. An electrochromic emissivity electrocaloric refrigeration unit according to claim 2, wherein, An electrocaloric radiative cooling plate slot (16) is fixedly arranged in the middle of the inner side of the shell (1), and the electrocaloric radiative cooling plate (4) is inserted into the electrocaloric radiative cooling plate slot (16) and fixed to the shell (1).

6. An electrochromic emissivity electrocaloric refrigeration unit according to claim 5, wherein: The hot-end phase change material assembly comprises a first partition plate fixed in the shell (1), and the first partition plate and the inner wall of the shell (1) jointly form a first phase change material cavity for filling hot-end phase change material (2), which is arranged in the upper part of the inner side of the shell (1).

7. An electrochromic emissivity electrocaloric refrigeration unit according to claim 6, wherein: The cold-end phase change material assembly comprises a second partition plate fixed in the shell (1), and the second partition plate and the inner wall of the shell (1) jointly form a second phase change material cavity for filling cold-end phase change material (6), which is arranged in the lower part of the inner side of the shell (1).

8. An electrochromic emissivity electrocaloric refrigeration unit according to claim 7, wherein: The first electric field comprises two hot-end ETEF films (3) arranged in the first gap, one of the hot-end ETEF films (3) is fixed to the bottom of the first partition plate, and the other hot-end ETEF film (3) is fixed to the top of the electrocaloric radiative cooling plate (4); the two hot-end ETEF films (3) are respectively electrically connected to the positive and negative electrodes of an electric field generator (12), and the electric field generator (12) and the two hot-end ETEF films (3) cooperate to form the first electric field in the first gap.

9. An electrochromic emissivity electrocaloric refrigeration unit according to claim 1, wherein: The second electric field comprises two cold-end ETEF films (5) arranged in the second gap, one of the cold-end ETEF films (5) is fixed to the top of the second partition plate, and the other cold-end ETEF film (5) is fixed to the bottom of the electrocaloric radiative cooling plate (4); the two cold-end ETEF films (5) are respectively electrically connected to the positive and negative electrodes of another electric field generator (12), and another electric field generator (12) and the two cold-end ETEF films (5) cooperate to form the second electric field in the second gap.

10. An electrochromic emissivity electrocaloric refrigeration device, characterized in that, The hot-end phase change material (2) and the cold-end phase change material (6) are both paraffin. The application further relates to an electrocaloric radiative cooling device comprising at least one electrocaloric radiative cooling unit as described in any one of claims 1-9.

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