CN212907552U

CN212907552U - Adsorption type thermoelectric switch

Info

Publication number: CN212907552U
Application number: CN202021724201.3U
Authority: CN
Inventors: 王俊杰; 席肖桐; 陈六彪; 郭嘉; 季伟; 崔晨
Original assignee: Technical Institute of Physics and Chemistry of CAS
Current assignee: Technical Institute of Physics and Chemistry of CAS
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-06
Anticipated expiration: 2030-08-18

Abstract

The utility model provides an absorption formula thermoelectric switch, include: a fixed element, a moving element, a thermal load and a flexible element; the flexible element is filled with adsorbent and adsorbate, two ends of the flexible element are respectively connected with the movable element and the fixed element, the fixed element and the heat load are arranged at intervals, the movable element sequentially penetrates through the flexible element and the fixed element, and the movable element is separated from or contacted with the heat load along with the temperature of the flexible element. The utility model provides an absorption formula thermoelectric switch adopts flexible component as the connecting piece, be connected with moving element and fixed component respectively, inside packing has adsorbent and adsorbate, utilize the relation of physical adsorption and temperature, adjust the gaseous volume in the flexible component, make flexible component produce flexible, drive moving element and be close to/keep away from the heat load, realize the break-make of electric current route, can realize the automatic control of heating process, need not extra manual operation, improve the heating device security of its control effectively, avoid overheated trouble.

Description

Adsorption type thermoelectric switch

Technical Field

The utility model relates to a heat flow path control technical field especially relates to an absorption formula thermoelectric switch.

Background

The current energy structure is mainly based on traditional fossil energy, but the high-grade electric energy generated by burning the fossil energy has a certain instability in time or space dimension with respect to the supply and demand of a user terminal.

Therefore, energy storage technology has become an important means to solve the problem of discontinuous energy consumption at the user end and maintain the balance between supply and demand. The heat storage technology is mainly used in the fields of power system peak regulation, solar power generation, heating and the like. One of the common heat storage technologies is to use an electric heating method to heat up the heat storage material, store the heat, and release and use the heat when a specific user needs the heat at a specific time. The resistance heating technology has the hidden troubles of short circuit, overheating caused by overlong heating time, equipment damage and the like. In order to ensure the safety of the system, a thermoelectric switch is usually used or an additional PID temperature control system is added to monitor the temperature, and when the temperature is higher than a designed value, the current path is cut off, and the heating is stopped. When the temperature is lower than the design value, the current is conducted and heating is started. These are all the keys to ensure safe operation of the electrical heating apparatus.

At present, thermoelectric switches for controlling temperature based on-off control of current mainly have two types, namely a bimetallic strip type structure and a ferrite magnet type structure. However, these two structures are complicated and difficult to process, and among them, the ferrite magnet type structure cannot be automatically controlled, and the heating cannot be automatically started by pressing a key when the user uses the ceramic magnet type structure. In addition, the existing system is additionally provided with additional devices such as a thermometer, a signal receiver and the like, and the PID technology is used for temperature control adjustment, but the complexity of the system is increased.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an absorption formula thermoelectric switch for simplify thermoelectric switch's structure, realize opening automatically/close heating process, guarantee heating device's safe operation.

An embodiment of the utility model provides an absorption formula thermoelectric switch, include:

a fixed element, a moving element, a thermal load and a flexible element;

the flexible element is filled with adsorbent and adsorbate, the both ends of flexible element respectively with the removal component with fixed component connects, fixed component with the heat load interval sets up, the removal component passes in proper order the flexible element with the fixed component, the removal component is along with the temperature of flexible element with heat load separation or contact.

According to an embodiment of the present invention, the movable element is separated from the thermal load when the temperature of the flexible element is higher than a preset value.

According to the utility model discloses an absorption formula thermoelectric switch, the adsorption capacity of adsorbent is in the temperature range of settlement and the temperature is negative correlation, and adsorbate (generally be gaseous) desorption and gaseous volume increase under the high temperature, when flexible element expanded to more than or equal to and predetermines length, the removal component with the thermal load separation.

According to an embodiment of the present invention, the flexible member contracts to a low temperature less than a predetermined length, and the moving member is in contact with the thermal load.

According to an embodiment of the present invention, the flexible element is provided with a passage for the moving element to pass through; the contact end of the moving element is movably disposed between the fixed element and the thermal load.

According to the utility model discloses an absorption formula thermoelectric switch, the removal element includes: a first transverse structure, a second transverse structure and a longitudinal structure;

the first transverse structure is connected with the flexible element; the longitudinal structure is movably arranged in the channel and the fixed element, a first end of the longitudinal structure is connected with the first transverse structure, a second end of the longitudinal structure is connected with the second transverse structure, and the second transverse structure is in contact with the heat load when the temperature of the flexible element is lower than a preset value.

The embodiment of the utility model provides an absorption formula thermoelectric switch is still provided, be equipped with on the fixed element with the through-hole of longitudinal structure looks adaptation, longitudinal structure movably sets up in the through-hole, longitudinal structure all the time with the lateral wall of through-hole contacts.

The utility model provides an absorption formula thermoelectric switch adopts flexible component as the connecting piece, be connected with moving element and fixed component respectively, inside packing has adsorbent and adsorbate, utilize the relation of physical adsorption and temperature, adjust the gaseous volume in the flexible component, make flexible component produce flexible, drive moving element and be close to/keep away from the heat load, realize the break-make of electric current route, can realize the automatic control of heating process, need not extra manual operation, improve the heating device security of its control effectively, avoid overheated trouble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a communication state of an adsorption type thermoelectric switch provided in an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an off state of an adsorption type thermoelectric switch according to an embodiment of the present invention;

1. a moving element; 2. an adsorbent and an adsorbate; 3. a flexible element; 4. a fixing element; 5. a heat load.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An adsorption type thermoelectric switch provided by an embodiment of the present invention is described below with reference to fig. 1 and 2, and includes: a fixed element 4, a moving element 1, a thermal load 5 and a flexible element 3.

The flexible element 3 is filled with the adsorbent and the adsorbate 2, two ends of the flexible element 3 are respectively connected with the movable element 1 and the fixed element 4, the fixed element 4 is arranged at a distance from the heat load 5, the movable element 1 sequentially penetrates through the flexible element 3 and the fixed element 4, and the movable element 1 is separated from or contacts the heat load 5 along with the temperature of the flexible element 3.

In this embodiment, when the temperature of the flexible element 3 is lower than the preset value, the moving element 1 contacts the thermal load 5, and the thermoelectric switch is in a connected state as shown in fig. 1. The moving element 1 is detached from the thermal load 5 when the temperature of the flexible element 3 is higher than a preset value.

In the closed state of the adsorption thermoelectric switch provided in this embodiment, as shown in fig. 1, when the switch is in the on state, the moving element 1 is in contact with the thermal load 5, the circuit is turned on, and the heating device starts heating. As shown in fig. 2, when the temperature of the moving element 1 is higher than the designed value, heat is transferred to the flexible element 3 through the moving element 1, the temperature of the adsorbent and the adsorbate 2 filled inside the flexible element 3 increases, the adsorption amount of the adsorbate (adsorbate is generally gas) to the adsorbate decreases at high temperature, part of the adsorbate is desorbed, the gas heats up and expands, the length of the flexible element 3 increases, the moving element 1 is pushed away from the heat load 5, the current path is cut off, and heating stops. When the temperature of the movable element 1 is lower than a set value, the temperature of the flexible element 3 in thermal contact with the movable element is lower, the flexible element 3 begins to contract, the length is reduced, one end of the flexible element 3 is connected with the fixed element 4 and cannot move, the flexible element 3 pushes the movable element 1 to be in contact with the thermal load 5, the current path is conducted, the heating device is started, the thermal load 5 is heated again, heat is transferred to the movable element 1, the movable element 1 is heated to the set value, the heat is transferred to the flexible element 3 again through the movable element 1, the flexible element 3 is heated and expanded again, and therefore automatic opening and closing can be achieved according to the characteristics of the adsorbent and the adsorbate 2 in the flexible element 3 without external manual detection and operation.

Based on the above embodiment, the utility model discloses still provide an embodiment, as shown in fig. 1 and fig. 2, flexible component 3 is the bellows that the material that the thermal conductivity is good made, and the combination of active carbon, zeolite etc. can be selected to inside adsorbent, and adsorbent particle size, filling mode are adjusted according to actual conditions. The adsorbate is selected from safe, non-explosive and non-toxic gas. The volume in the corrugated pipe is changed according to the specific volume change of the adsorbate at different temperatures and the different adsorption quantity of the adsorbent to gas at different temperatures.

Generally, the adsorption amount of the adsorbent is inversely related to the temperature in a set temperature range, and when the flexible element 3 expands to a predetermined length or more at a high temperature, the movable element 1 is separated from the heat load 5. When the flexible element 3 shrinks to less than the preset length at low temperature, the moving element 1 is in contact with the heat load 5.

In addition, metal powder can be added into the adsorbent inside the corrugated pipe, so that the heat transfer characteristic of the adsorbent is enhanced.

Correspondingly, the heat load 5 and the moving element 1 are made of metal materials with good thermal conductivity, such as gold, silver, copper (red copper) and other metal materials.

In this embodiment, the flexible element 3 is provided with a passage through which the moving element 1 passes. The flexible element 3 is movable in the passage and the contact end of the moving element 1 is movably arranged between the fixed element 4 and said heat load 5.

In order to ensure the reliability and sensitivity of the switch, the fixing element 4 is made of an insulating material with poor heat-conducting property. The flexible element 3 is located between the moving element 1 and the fixed element 4, so that the flexible element 3 is prevented from directly contacting with other external structures to transfer heat.

Wherein the moving element 1 comprises: a first transverse structure, a second transverse structure and a longitudinal structure. The first transverse structure is connected to the flexible element 3. A longitudinal structure is movably arranged in the passage and the fixed element 4, a first end of the longitudinal structure being connected to the first transverse structure, a second end of the longitudinal structure being connected to the second transverse structure, and the second transverse structure being in contact with the thermal load 5 when the temperature of the flexible element 3 is below a preset value.

Correspondingly, the fixing element 4 is provided with a through-hole adapted to the longitudinal structure, which is movably arranged in the through-hole. Throughout the contraction and expansion of the flexible element 3, the longitudinal structures are always in contact with the side walls of the through hole.

To sum up, the embodiment of the utility model provides an absorption formula thermoelectric switch adopts flexible component as the connecting piece, is connected with moving element and fixed component respectively, and inside packing has adsorbent and adsorbate, utilizes the relation of physical adsorption and temperature, adjusts the interior gas volume of flexible component for flexible component produces telescopically, drives moving element and is close to/keeps away from the heat load, realizes the break-make of electric current route, can realize the automatic control of heating process, need not extra manual operation, improves the heating device security of its control effectively, avoids overheated trouble.

In addition, the adsorption type thermoelectric switch is different from the prior art, only comprises a fixed element, a moving element, a heat load, a flexible element and an adsorbent and adsorbate filled in the flexible element, and has a simple and reliable structure.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An adsorption-type thermoelectric switch, comprising:

a fixed element, a moving element, a thermal load and a flexible element;

2. The sorption thermoelectric switch of claim 1, wherein the moving element is decoupled from the thermal load when the temperature of the flexible element is above a preset value.

3. The absorption thermoelectric switch according to claim 1, wherein an absorption amount of the adsorbent is inversely related to a temperature in a predetermined temperature range, the adsorbate is desorbed at a high temperature and a gas volume is increased, and the moving member is separated from the thermal load when the flexible member is expanded to a predetermined length or more.

4. The absorbed thermoelectric switch of claim 3, wherein the moving element is in contact with the thermal load when the flexible element cryogenically contracts to less than a predetermined length.

5. The adsorptive thermoelectric switch according to any one of claims 1 to 4, wherein said flexible member has a passage therein through which said moving member passes; the contact end of the moving element is movably disposed between the fixed element and the thermal load.

6. The absorbed thermoelectric switch of claim 5, wherein the moving element comprises: a first transverse structure, a second transverse structure and a longitudinal structure;

7. The absorption thermoelectric switch according to claim 6, wherein said fixing member has a through hole adapted to said longitudinal structure, said longitudinal structure is movably disposed in said through hole, and said longitudinal structure is always in contact with a sidewall of said through hole.