Fire extinguishing device and air conditioner indoor unit

Abstract

The utility model discloses a fire extinguishing device and an air conditioner indoor unit, the fire extinguishing device comprises a container body, the container body is filled with a fire extinguishing agent, and the container body is provided with at least one discharge port communicated with the interior of the container body; and the temperature sensing assembly is arranged at the discharging opening and used for opening the discharging opening when the temperature sensing assembly is subjected to high temperature so that the fire extinguishing agent can be discharged from the discharging opening. According to the fire extinguishing device, the discharge port used for discharging the fire extinguishing agent is formed in the container body, and the fire extinguishing agent is discharged by opening the discharge port when the temperature sensing assembly is subjected to high temperature; the fire extinguishing agent can be rapidly discharged into the space where the heat exchanger of the air conditioner indoor unit is located, fire aggravation caused by leakage of combustible refrigerants in the heat exchanger is effectively prevented, and the use safety of an indoor air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a fire extinguishing device and an indoor unit of an air conditioner. Background Art

[0002] Electrical fires are caused by electrical line failures of electrical equipment. According to incomplete statistics, among the fires with identified causes, electrical fires account for the vast majority. As an electrical appliance widely used indoors, the indoor unit of an air conditioner has relatively complex electrical circuits inside, and there is a possibility of electrical fires. At present, the heat exchanger structure of the indoor unit of an air conditioner mostly adopts a finned-tube heat exchanger structure. The tube wall of the finned-tube heat exchanger is generally thin. In the initial stage of a fire caused by electricity in the indoor unit of an air conditioner, the pressure of the refrigerant in the heat exchanger increases, which easily causes the heat exchanger pipeline to rupture. When the refrigerant is a combustible refrigerant, after the heat exchanger ruptures, the leakage of the refrigerant burning or exploding will cause the fire to intensify, and the fire is very likely to spread from a local area to the entire indoor environment, causing greater harm. Summary of the Utility Model

[0003] The embodiment of the utility model provides a fire extinguishing device and an indoor unit of an air conditioner, which solve the problem that the leakage of combustible refrigerant in the heat exchanger caused by an electrical fire in the air conditioner intensifies the fire.

[0004] In a first aspect, the embodiment of the utility model provides a fire extinguishing device, which includes:

[0005] A container body filled with a fire extinguishing agent inside, and the container body is provided with at least one discharge port communicated with its inside;

[0006] A temperature sensing component is arranged at the discharge port, and the temperature sensing component is used to open the discharge port when experiencing high temperature so that the fire extinguishing agent is discharged from the discharge port.

[0007] In the fire extinguishing device provided by the embodiment of the utility model, the container body is provided with an extension section communicated with its inside. The extension section is bent and extended from one end of the container body, and the discharge port is arranged on the extension section.

[0008] In the fire extinguishing device provided by the embodiment of the utility model, the container body includes a pipe section. There are two extension sections, and the fire extinguishing agent is filled in the pipe section. The two extension sections are respectively connected to the opposite ends of the pipe section and are bent and extended from the opposite ends of the pipe section respectively.

[0009] In the fire extinguishing device provided by the embodiment of the utility model, the temperature sensing component includes a heat melting body and a heat conducting body. The heat melting body is arranged in the discharge port and closes the discharge port. The heat conducting body is arranged around the outer surface of the heat melting body. Among them, the heat conducting body is used for heat conduction to melt the heat melting body.

[0010] In the fire extinguishing device provided by the embodiment of the present utility model, the temperature sensing assembly further includes a sealing plug, the sealing plug is embedded in the discharge port, and a through hole penetrating into the interior of the container body is provided on the sealing plug, the heat melting body is embedded in the through hole to seal the through hole, and the heat conducting body is arranged around the outer surface of the sealing plug.

[0011] In the fire extinguishing device provided by the embodiment of the present utility model, the heat conducting body is spirally wound around the outer surface of the sealing plug.

[0012] In the fire extinguishing device provided by the embodiment of the present utility model, the caliber of the through hole gradually narrows from inside to outside.

[0013] In the fire extinguishing device provided by the embodiment of the present utility model, a filling nozzle is further provided on the container body, the filling nozzle is communicated with the interior of the container body, wherein the filling nozzle is used for filling the fire extinguishing agent into the interior of the container body.

[0014] In the fire extinguishing device provided by the embodiment of the present utility model, the fire extinguishing device further includes a pressure indicating instrument, the pressure indicating instrument is arranged on the container body and communicated with the interior of the container body, wherein the pressure indicating instrument is used for indicating the pressure inside the container body.

[0015] In a second aspect, the embodiment of the present utility model provides an indoor unit of an air conditioner, the indoor unit of the air conditioner includes a housing, a heat exchanger, and the fire extinguishing device in the first aspect above, the fire extinguishing device and the heat exchanger are adjacently arranged in the housing, and the discharge ports of the fire extinguishing device are adjacent to two axially opposite ends of the heat exchanger.

[0016] The embodiment of the present utility model provides a fire extinguishing device and an indoor unit of an air conditioner. The fire extinguishing device includes a container body and a temperature sensing assembly; the interior of the container body is filled with a fire extinguishing agent, and the container body is provided with at least one discharge port communicated with its interior; the temperature sensing assembly is arranged at the discharge port, and the temperature sensing assembly is used for opening the discharge port when experiencing high temperature so that the fire extinguishing agent is discharged from the discharge port. The fire extinguishing device provided by the present application is provided with a discharge port for discharging the fire extinguishing agent on the container body, and the temperature sensing assembly opens the discharge port when experiencing high temperature to discharge the fire extinguishing agent. When the fire extinguishing device is applied to the indoor unit of the air conditioner, in the initial stage of a fire caused by electricity in the indoor unit of the air conditioner, the fire extinguishing agent can be quickly discharged into the space where the heat exchanger of the indoor unit of the air conditioner is located, effectively preventing the leakage of combustible refrigerant in the heat exchanger and causing the fire to intensify, and improving the safety of using the indoor air conditioner. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the fire extinguishing device provided by the embodiment of the present utility model;

[0019] Figure 2 Application scenario diagram of the fire extinguishing device provided by the embodiment of the present utility model;

[0020] Figure 3 For Figure 2 Enlarged view of part A;

[0021] Figure 4 Application scenario diagram of the fire extinguishing device provided by the embodiment of the present utility model;

[0022] Figure 5 Cross-sectional view of the fire extinguishing device provided by the embodiment of the present utility model;

[0023] Figure 6 For Figure 1 Enlarged view of part B;

[0024] Figure 7 For Figure 5 Enlarged view of part C;

[0025] Figure 8 Cross-sectional view of the sealing plug and the heat-melting body of the fire extinguishing device provided by the embodiment of the present utility model;

[0026] Figure 9 Cross-sectional view of the sealing plug and the heat-melting body of the fire extinguishing device provided by the embodiment of the present utility model;

[0027] Figure 10 Side view of the fire extinguishing device provided by the embodiment of the present utility model;

[0028] Figure 11 Bottom view of the fire extinguishing device provided by the embodiment of the present utility model;

[0029] Figure 12 Structural schematic diagram of the indoor unit of the air conditioner provided by the embodiment of the present utility model;

[0030] In the figure, each reference numeral is:

[0031] 100, Fire extinguishing device; 10, Container body; 11, Extension section; 12, Pipe body section; 101, Discharge port; 102, Filling nozzle; 20, Temperature sensing component; 21, Heat melting body; 22, Heat conducting body; 23, Sealing plug; 230, Through hole; 30, Pressure indicating instrument; 200, Indoor unit of air conditioner; 2010, Heat exchanger; 2020, Housing. Detailed implementation mode

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for explaining and understanding the present invention, rather than for limiting the present invention. In addition, in the drawings, structures that are similar or the same are denoted by the same reference numerals.

[0034] Refer to Figures 1 to 5 , which shows an embodiment of the fire extinguishing device 100 provided by the present invention. The structure and working principle of the fire extinguishing device 100 will be described in detail below with reference to the accompanying drawings of the specification. The fire extinguishing device 100 includes a container body 10 and a temperature sensing component 20; the container body 10 is filled with a fire extinguishing agent inside, and the container body 10 is provided with at least one discharge port 101 communicating with its interior; the temperature sensing component 20 is arranged at the discharge port 101, and the temperature sensing component 20 is used to open the discharge port 101 when exposed to high temperature so that the fire extinguishing agent is discharged from the discharge port 101.

[0035] In specific implementation, in actual application, the fire extinguishing device 100 is mainly used to be installed in the indoor unit 200 of the air conditioner to prevent serious harm caused by electrical fires in the indoor unit 200 of the air conditioner. Such as Figure 2 and Figure 3As shown, a heat exchanger 2010 is provided in the indoor unit 200 of the air conditioner. The heat exchanger 2010 is an important component in the air conditioning system. Its main function is to heat and cool the outside air through the heat exchanger 2010, and then send the air at an appropriate temperature to the indoor through pipelines and other means. The commonly used heat exchanger 2010 in the indoor unit 200 of the air conditioner is a finned-tube heat exchanger 2010, which is a heat exchanger 2010 with fins (aluminum fins or copper fins) sleeved on the heat transfer tubes (copper tubes or aluminum tubes). The pipe wall of the finned-tube heat exchanger 2010 is generally thin. When a fire breaks out, the pressure of the refrigerant in the air conditioner rises, which easily causes the pipelines of the heat exchanger 2010 to rupture. In particular, the bends and welded elbows of the pipelines are more likely to rupture. The rupture of the pipelines of the heat exchanger 2010 will cause the extinguishing agent to leak out, and the combustible extinguishing agent will intensify the fire. For example, combustible refrigerants such as R290 and R32 will burn, causing the fire to spread from a small area to a large area. Therefore, the heat exchanger 2010 of the indoor unit 200 of the air conditioner is the most important part for the action of the fire extinguishing device 100.

[0036] In this embodiment, the fire extinguishing device 100 is composed of a container body 10 and a temperature sensing component 20. The container body 10 is a closed container that can accommodate a gas or liquid medium. The interior of the container body 10 is a cavity with a certain volume. The fire extinguishing agent is filled inside the container body 10 in a compressed form, so that there is a certain pressure inside the container body 10. The type of the fire extinguishing agent can be arbitrary, and it can be a dry powder fire extinguishing agent, a carbon dioxide fire extinguishing agent, a foam fire extinguishing agent, etc. At least one discharge port 101 is provided on the container body 10. When the fire extinguishing device 100 is actually applied to the indoor unit 200 of the air conditioner, the discharge port 101 on the container body 10 is arranged adjacent to the surface of the heat exchanger 2010 of the indoor unit 200 of the air conditioner. The discharge port 101 is an opening that connects the interior of the container body 10 to the outside, and its function is to discharge the fire extinguishing agent. The fire extinguishing agent inside the container body 10 can be discharged to the outside of the container body 10 through the discharge port 101. The temperature sensing component 20 is installed at the discharge port 101. Under normal circumstances, the temperature sensing component 20 completely seals the discharge port 101 on the container body 10, so that a closed space is formed inside the container body 10, and the fire extinguishing agent cannot be discharged from the discharge port 101 and will not leak either. The temperature sensing component 20 is a temperature control valve, and high temperature is a necessary condition for triggering the temperature sensing component 20 to open the discharge port 101. Here, the high temperature includes but is not limited to the temperature that can cause combustibles to burn. Generally, a temperature above 100 °C can be called high temperature. When the temperature sensing component 20 is subjected to high temperature, it can open the discharge port 101 on the container body 10, and the fire extinguishing agent inside the container body 10 will be discharged from the discharge port 101 under the action of pressure. When the fire extinguishing device 100 is actually applied, the discharge port 101 is adjacent to the surface of the heat exchanger 2010 of the indoor unit of the air conditioner. When the fire extinguishing agent is discharged from the discharge port 101, the fire extinguishing agent can fill the space where the heat exchanger 2010 is located at the fastest speed. Even if the pipeline of the heat exchanger 2010 ruptures and the refrigerant leaks, the leaked combustible refrigerant will be contacted and mixed with the fire extinguishing agent, so that the combustible refrigerant loses its combustion ability, thereby suppressing the expansion and spread of the fire and preventing the electrical fire of the indoor unit 200 of the air conditioner from developing into a fire.

[0037] The fire extinguishing device provided in this embodiment is provided with a discharge port for discharging the fire extinguishing agent on the container body, and the temperature sensing component opens the discharge port when subjected to high temperature to discharge the fire extinguishing agent. When the fire extinguishing device is applied to the indoor unit of the air conditioner, in the initial stage of the fire caused by electricity in the indoor unit of the air conditioner, the fire extinguishing agent can be quickly discharged into the space where the heat exchanger of the indoor unit of the air conditioner is located, effectively preventing the combustible refrigerant in the heat exchanger from leaking and causing the fire to intensify, and improving the safety of using the indoor air conditioner.

[0038] In one embodiment, referring to Figures 1 to 5, the container body 10 is provided with an extension section 11 communicating with its interior. The extension section 11 extends by bending from one end of the container body 10, and the discharge port 101 is arranged on the extension section 11. In a specific implementation, the container body 10 of the fire extinguishing device 100 is provided with an extension section 11 communicating with the interior of the container body 10. The extension section 11 is a part of the container body 10 and extends by bending from one end of the container body 10. The discharge port 101 is arranged on the extension section 11. In practice, since the ends of the heat exchanger 2010 of the indoor unit 200 of the air conditioner are the bending and welding parts of the heat exchange pipelines, the pipelines at both ends of the heat exchanger 2010 are relatively weak and are the parts most likely to burst when affected by high temperature. Therefore, both ends of the heat exchanger 2010 of the indoor unit 200 of the air conditioner are the key action parts of the fire extinguishing device 100. When the fire extinguishing device 100 is actually applied to the indoor unit 200 of the air conditioner, the bent and extended extension section 11 can extend to the position of the end of the heat exchanger 2010 of the indoor unit 200 of the air conditioner, so that the discharge port 101 on the extension section 11 is adjacent to the end of the heat exchanger 2010. When an electrical fire occurs in the indoor unit 200 of the air conditioner, the temperature-sensitive component 20 arranged at the discharge port 101 will completely open the discharge port 101 on the extension section 11 after experiencing high temperature. The fire extinguishing agent filled and stored inside the container body 10 is discharged from the discharge port 101 on the extension section 11 under the action of pressure. The discharged fire extinguishing agent can fill the space where the weakest heat exchange pipelines at the end of the heat exchanger 2010 are located at the fastest speed. Even if the refrigerant leaks from the weak part of the heat exchange pipeline of the heat exchanger 2010, the fire extinguishing agent can contact and mix with the leaked refrigerant at the fastest speed, suppressing the fire from the source and preventing the fire from spreading.

[0039] Further, referring to Figures 1 to 5, the container body includes a pipe body section 12, there are two extension sections 11, the fire extinguishing agent is filled in the pipe body section 12, the two extension sections 11 are respectively connected to opposite ends of the pipe body section 12 and are bent and extended from opposite ends of the pipe body section 12. In a specific implementation, the amount of refrigerant in the heat exchanger 2010 of the indoor unit 200 of the air conditioner is relatively large. If a large amount of combustible refrigerant leaks, more fire extinguishing agent needs to be proportioned to suppress it. To increase the amount of fire extinguishing agent that the container body 10 can hold, it is necessary to increase the volume of the container body 10. However, most of the space in the indoor unit 200 of the air conditioner is used to install various refrigeration components, and the available space is small. Therefore, in this embodiment, the overall volume of the container body 10 is increased by improving the shape of the container body 10. The container body 10 is composed of a pipe body section 12, and the pipe body section 12 is in the shape of a long pipe as a whole, and the pipe body section 12 is the main part for accommodating the fire extinguishing agent. When the fire extinguishing device 100 is actually applied to the indoor unit 200 of the air conditioner, the radial space occupied by the pipe body section 12 in the indoor unit 200 of the air conditioner is small, and the pipe body section 12 as a whole can be installed along the axial direction of the indoor unit 200 of the air conditioner. On the basis of not interfering with the installation of other components of the indoor unit 200 of the air conditioner, the overall volume of the container body 10 is larger, so that the amount of fire extinguishing agent that can be filled in the container body 10 as a whole is more. Here, two extension sections 11 are provided, and the two extension sections 11 are respectively connected to opposite ends in the axial direction of the pipe body section 12 and are bent and extended from both ends of the pipe body section 12 to the end faces of opposite ends of the heat exchanger 2010 of the indoor unit 200 of the air conditioner. When an electrical fire occurs in the indoor unit 200 of the air conditioner, the temperature sensing component 20 opens the discharge ports 101 on the two extension sections 11, so that the fire extinguishing agent is discharged through the discharge ports 101 on the two extension sections 11 to the relatively weak heat exchange pipeline parts at both ends of the heat exchanger 2010 of the indoor unit 200 of the air conditioner, and the available fire extinguishing agent of the fire extinguishing device 100 is sufficient to completely suppress the combustion of a large amount of combustible refrigerant leaked from the heat exchanger 2010, making the suppression of the electrical fire in the indoor unit 200 of the air conditioner more reliable.

[0040] In one embodiment, referring to Figure 6 and Figure 7, the temperature-sensitive component 20 includes a heat-melting body 21 and a heat-conducting body 22. The heat-melting body 21 is disposed in the discharge port 101 and closes the discharge port 101. The heat-conducting body 22 is disposed around the outer surface of the heat-melting body 21. Wherein, the heat-conducting body 22 is used for conducting heat to melt the heat-melting body 21. In a specific implementation, the temperature-sensitive component 20 includes a heat-melting body 21 and a heat-conducting body 22. The heat-melting body 21 is mainly disposed in the discharge port 101 on the container body 10 to close the discharge port 101 on the container body 10. The heat-melting body 21 is a substance that will melt under high-temperature conditions, but it is in a solid state under normal temperature conditions and has good sealing performance, and can seal the discharge port 101. The heat-conducting body 22 is disposed around the outer surface of the heat-melting body 21 and is used to conduct heat to the heat-melting body 21. The heat-conducting body 22 can be in direct contact with the outer surface of the heat-melting body 21, or there can be other non-heat-insulating substances between the heat-conducting body 22 and the heat-melting body 21. The heat-conducting body 22 is designed with a material having good heat-conducting performance, usually a metal material, such as metals like copper and aluminum. When an electrical fire occurs, the heat in the space will be preferentially absorbed by the heat-conducting body 22, and the temperature of the heat-conducting body 22 rises, causing the heat-melting body 21 to melt. During the melting process of the heat-melting body 21, the volume gradually becomes smaller until the volume is not enough to close the discharge port 101 on the container body 10, so that the discharge port 101 is opened, and the extinguishing agent in the container body 10 is discharged from the discharge port 101 under the action of pressure, and then contacts the surface of the heat exchanger 2010 to play a role in suppressing the fire.

[0041] Further, referring to Figures 7 to 10, the temperature-sensitive component 20 further includes a sealing plug 23. The sealing plug 23 is embedded in the discharge port 101, and a through hole 230 communicating with the inside of the container body 10 is provided on the sealing plug 23. The heat-melting body 21 is embedded in the through hole 230 to seal the through hole 230, and the heat-conducting body 22 is disposed around the outer surface of the sealing plug 23. In a specific implementation, the heat-conducting body 22 and the heat-melting body 21 are separated by the sealing plug 23. The sealing plug 23 has good heat conductivity and sealing performance. Specifically, the sealing plug 23 can be designed with rubber material. The bottom end of the sealing plug 23 is embedded in the discharge port 101 of the container body 10, maintaining good airtightness with the discharge port 101. A through hole 230 is axially provided on the sealing plug 23, and the through hole 230 on the sealing plug 23 penetrates into the inside of the container body 10, communicating the inside of the container body 10 with the outside. The overall shape of the heat-melting body 21 is adapted to the internal shape of the through hole 230 on the sealing plug 23. The heat-melting body 21 is integrally embedded in the through hole 230, and it is in interference fit with the through hole 230 to seal the through hole 230. The heat-conducting body 22 is integrally disposed around the outer surface of the top end of the sealing plug 23 and is in direct contact with the outer surface of the sealing plug 23. When an electrical fire occurs in the indoor unit 200 of the air conditioner, the heat-conducting body 22 preferentially absorbs the heat in the space, the temperature of the heat-conducting body 22 rises, and the heat is conducted to the sealing plug 23 through the heat-conducting body 22, causing the temperature of the sealing plug 23 to rise. Since the heat-melting body 21 is embedded in the through hole 230 on the sealing plug 23, the surface of the heat-melting body 21 is uniformly heated, and the heat-melting body 21 gradually melts and its volume gradually becomes smaller. Until the volume of the heat-melting body 21 melts to a level where it is insufficient to seal the through hole 230 on the sealing plug 23, the fire extinguishing agent inside the container body 10 is discharged from the through hole 230 on the sealing plug 23 under the action of pressure. The discharged fire extinguishing agent quickly fills the space where the surface of the heat exchanger 2010 is located, playing a role in suppressing the fire.

[0042] In one embodiment, referring to Figure 6 and Figure 7, the heat conductor 22 is spirally wound around the outer surface of the sealing plug 23. In a specific implementation, in order to improve the heat conduction effect, the heat conductor 22 is designed into a filament shape. The filament-shaped heat conductor 22 is spirally wound around the outer surface of the top of the sealing plug 23, and the heat conductor 22 is wound evenly for multiple turns as a whole, so that the contact area between the heat conductor 22 and the sealing plug 23 is increased. When an electrical fire occurs in the indoor unit 200 of the air conditioner, the heat conductor 22 preferentially absorbs the heat in the space, the temperature of the filament-shaped heat conductor 22 rises, and the heat on the heat conducting member is evenly distributed to the sealing plug 23 through each turn of the winding, prompting the heat conductor 22 embedded in the through hole 230 on the sealing plug 23 to melt until the heat melt 21 melts to a volume insufficient to seal the through hole 230 on the sealing plug 23, and the fire extinguishing agent inside the container body 10 is discharged from the through hole 230 on the sealing plug 23 under the action of pressure. The discharged fire extinguishing agent quickly fills the space where the surface of the heat exchanger 2010 is located, preventing the combustible refrigerant inside the heat exchanger 2010 from leaking out and exacerbating the fire.

[0043] In one embodiment, referring to Figures 7 to 9 , the caliber of the through hole 230 gradually narrows from inside to outside. In a specific implementation, the caliber of the through hole 230 on the sealing plug 23 is designed to gradually narrow from inside to outside, that is, the shape of the space inside the through hole 230 is frustum-shaped, the caliber outside the through hole 230 is smaller than the caliber inside the through hole 230, and the shape of the heat melt 21 is designed to be frustum-shaped to match the shape of the through hole 230. After the heat melt 21 is embedded in the through hole 230, due to the caliber of the through hole 230 gradually narrowing from inside to outside, the inner side wall of the through hole 230 forms a limit on the outer side wall of the heat melt 21, and the wider part of the heat melt 21 cannot pass through the part with a smaller caliber of the through hole 230. This enables the heat melt 21 to form a good seal for the through hole 230 at normal temperature, and the fire extinguishing agent inside the container body 10 cannot easily leak through the edge of the through hole 230, making the reliability of the fire extinguishing device 100 better.

[0044] In one embodiment, referring to Figure 11 , the container body 10 is further provided with a filling nozzle 102, and the filling nozzle 102 is communicated with the inside of the container body 10. Among them, the filling nozzle 102 is used to fill the fire extinguishing agent into the container body 10. In a specific implementation, a filling nozzle 102 is provided on the container body 10, the filling nozzle 102 is communicated with the inside of the container body 10, and the filling nozzle 102 has a one-way conduction function, which can only pass through in one direction, that is, it can pass through the inside of the container body 10 from the outside of the container body 10 through the filling nozzle 102, but it cannot pass through the outside of the container body 10 from the inside of the container body 10 through the filling nozzle. When the amount of the fire extinguishing agent inside the container body 10 is insufficient, the fire extinguishing agent can be filled into the container body 10 through the filling nozzle 102, which is very convenient.

[0045] In one embodiment, the fire extinguishing device 100 further includes a pressure indicating instrument 30. The pressure indicating instrument 30 is disposed on the container body 10 and is in communication with the interior of the container body 10. Among them, the pressure indicating instrument 30 is used to indicate the pressure inside the container body 10. In a specific implementation, the fire extinguishing device 100 further includes a pressure indicating instrument 30. The pressure indicating instrument 30 is arranged on the container body 10 and is in communication with the interior of the container body 10. The pressure indicating instrument 30 is an instrument that can detect and indicate the pressure inside a sealed container in real time. The pressure indicating instrument 30 is provided with a dial, a pointer, scales, etc. Since the fire extinguishing agent is stored in the interior of the container body 10 for a long time, the sealing performance may be affected due to the aging of the container body 10. If the sealing performance of the container body 10 has problems, it may cause the fire extinguishing agent to leak. Therefore, the pressure indicating instrument 30 can detect and indicate the pressure inside the container body 10 in real time. If the scale value indicated by the pointer on the dial of the pressure indicating instrument 30 becomes smaller, it indicates that the fire extinguishing agent in the container body 10 is likely to leak. This can remind the user to replace the new fire extinguishing device 100 to ensure that the fire extinguishing device 100 can play a normal role in suppressing the fire when an electrical fire occurs in the indoor unit 200 of the air conditioner.

[0046] In one embodiment, an indoor unit 200 of an air conditioner is provided, as Figure 12 shown, and with reference to Figure 1 and Figure 2 , the fire extinguishing device 100 is disposed adjacent to the heat exchanger 2010 in the housing 2020, and the discharge port 101 of the fire extinguishing device 100 is adjacent to the axially opposite ends of the heat exchanger 2010. In a specific implementation, the indoor unit 200 of the air conditioner is composed of a housing 2020, a heat exchanger 2010, a fire extinguishing device 100, and some other components. The fire extinguishing device 100 is installed in the housing 2020 of the indoor unit 200 of the air conditioner. The discharge port 101 on the container body 10 of the fire extinguishing device 100 is adjacent to the relatively weak heat exchange pipelines at the axially opposite ends of the heat exchanger 2010 of the indoor unit 200 of the air conditioner. When an electrical fire occurs in the indoor unit 200 of the air conditioner, the temperature sensing component 20 of the fire extinguishing device 100 will be subjected to high temperature and open the discharge port 101 on the container body 10, so that the fire extinguishing agent in the container body 10 can be discharged to the parts of the heat exchanger 2010 where refrigerant leakage is most likely to occur at the fastest speed. Even if the heat exchanger 2010 ruptures due to the high temperature of the pipeline and the combustible refrigerant leaks out, under the action of the fire extinguishing agent, the fire cannot spread further. After the fire extinguishing agent is discharged, it can quickly suppress the local fire around and prevent the fire from spreading. Among them, the fire extinguishing device 100 in this embodiment can adopt any one of the fire extinguishing devices 100 provided by the present invention. Since the specific structure and working principle of the fire extinguishing device 100 have been introduced in detail in the previous specification, for the sake of simplicity of the specification, it will not be repeated here.

[0047] The indoor unit of the air conditioner in this embodiment has higher safety during indoor use because it adopts the fire extinguishing device provided by the present utility model.

[0048] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A fire extinguishing device, characterized in that: include: A container body, the interior of which is filled with a fire extinguishing agent, and the container body is provided with at least one discharge port communicating with the interior thereof; A temperature sensing component is arranged at the discharge port, and is used to open the discharge port when subjected to high temperature so that the fire extinguishing agent can be discharged from the discharge port.

2. The fire extinguishing device according to claim 1, characterized in that: The container body is provided with an extension section communicated with the interior thereof, the extension section is bent and extended from one end of the container body, and the discharge port is provided at the extension section.

3. The fire extinguishing device according to claim 2, characterized in that: The container body includes a tube section, two extension sections are provided, the fire extinguishing agent is filled in the tube section, and the two extension sections are respectively connected to opposite ends of the tube section and are respectively bent and extended from opposite ends of the tube section.

4. The fire extinguishing device according to any one of claims 1 to 3, characterized in that: The temperature sensing component includes a hot melt and a heat conductor, wherein the hot melt is disposed in the discharge port and closes the discharge port, and the heat conductor is disposed around the outer surface of the hot melt, wherein the heat conductor is used for conducting heat to melt the hot melt.

5. The fire extinguishing device according to claim 4, characterized in that: The temperature sensing component also includes a sealing plug, which is embedded in the discharge port and is provided with a through hole that penetrates to the inside of the container body. The hot melt is embedded in the through hole to seal the through hole, and the heat conductor is arranged around the outer surface of the sealing plug.

6. The fire extinguishing device according to claim 5, characterized in that: The heat conductor is spirally wound around the outer surface of the sealing plug.

7. The fire extinguishing device according to claim 5, characterized in that: The diameter of the through hole gradually narrows from the inside to the outside.

8. The fire extinguishing device according to any one of claims 1 to 3, characterized in that: The container body is also provided with a filling nozzle, which is communicated with the interior of the container body, wherein the filling nozzle is used to fill the fire extinguishing agent into the interior of the container body.

9. The fire extinguishing device according to any one of claims 1 to 3, characterized in that: The fire extinguishing device further comprises a pressure indicating instrument, which is arranged on the container body and communicated with the interior of the container body, wherein the pressure indicating instrument is used to indicate the pressure inside the container body.

10. An air conditioner indoor unit, characterized in that: It comprises a shell, a heat exchanger and the fire extinguishing device according to any one of claims 1 to 9, wherein the fire extinguishing device is arranged adjacent to the heat exchanger in the shell, and the discharge port of the fire extinguishing device is adjacent to two opposite ends of the heat exchanger in the axial direction.

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