Anti-freezing self-cleaning sprinkler head
Patent Information
- Application Number
- CN202522105273.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-29
AI Technical Summary
Existing fire sprinklers have limitations in terms of antifreeze protection for fire sprinklers with glass bulbs, and they have not effectively solved the problem of water treatment.
A self-cleaning antifreeze sprinkler head was designed. By setting a heating wire and a temperature sensor in the water channel, the heated water temperature is transferred to the outside of the glass column using a guiding component. Combined with an adsorption component to reduce water hardness and adsorb small particles, the glass column is broken quickly and the water does not freeze.
It improves the heat transfer strength of the glass column in low-temperature environments, reduces the possibility of breakage, responds quickly to fire needs, and provides a self-cleaning function to ensure that the water nozzles work normally in low-temperature environments.
Smart Images

Figure CN224925524U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire sprinkler technology, and more specifically to an antifreeze self-cleaning sprinkler head. Background Technology
[0002] Fire sprinklers are a key component of automatic sprinkler systems, primarily used to automatically spray water to control or extinguish initial fires. They are typically installed on the ceiling or walls of a building and can sense changes in ambient temperature, automatically activating the sprinkler system when a preset activation temperature is reached. Existing fire sprinklers, such as "Application No.: CN202420428413.9, A Highly Safe Antifreeze Fire Sprinkler," describe "the heating pipe and heating plate can heat the surface of the fire sprinkler and ensure that the water flowing inside will not freeze"; and "Application No.: CN202420956033.2, A Self-Cleaning Sealed Dustproof Concealed Sprinkler," describe "an adsorption component for reducing water hardness and adsorbing fine particles" in the water passage chamber. While the aforementioned fire sprinklers can provide antifreeze water and treat water quality, their antifreeze protection is relatively limited for fire sprinklers with glass bulbs. Utility Model Content
[0003] The purpose of this utility model is to provide an antifreeze self-cleaning sprinkler head in order to solve the above-mentioned technical problems.
[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes an antifreeze self-cleaning sprinkler head, including a sprinkler body and a water passage on it. A water-blocking plug is attached to the closed end of the water passage to block the water passage. A glass column is placed between the sprinkler body and the water-blocking plug. A heating wire is fixed inside the water passage. Water is contained in the water passage. A temperature sensor is fixed on the outside of the sprinkler body and its sensing end extends into the water passage. A guiding component communicating with the water passage is fixed on the water-blocking plug. The guiding component conducts heat and is close to the glass column.
[0005] As a preferred embodiment of the present invention, the guide component is provided in multiple sets and is evenly distributed outside the guide component.
[0006] As a preferred technical solution of this utility model, the guiding component includes a fixed strip that runs through both sides of the water-blocking plug and a soft strip that is attached and fixed to one end thereto. The other end of the fixed strip is connected to the water passage, and the soft strip is located on the outside of the glass column.
[0007] As a preferred embodiment of this utility model, the fixed strip is made of copper, and the flexible strip is made of thermally conductive silicone.
[0008] As a preferred technical solution of this utility model, it also includes an adsorption element disposed in the water passage.
[0009] As a preferred embodiment of this utility model, the adsorption element is fixedly mounted on the water-blocking plug, and the adsorption element moves within the closed opening.
[0010] The beneficial effects of this utility model are as follows: The heated water temperature is transferred to the outside of the glass column by the guide component. The glass column can also contact the guide component to improve the heat transfer intensity, reduce the possibility of breakage in a cold environment, and speed up the response rate, which helps to quickly reach the glass column's breakage temperature when needed. The softness of the soft strip in the guide component will not block the glass column when it breaks and has little impact on the falling of the water-blocking plug. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Reference numerals: Nozzle body-1, water-blocking plug-2, glass column-3, heating wire-4, temperature sensor-5, adsorption component-6, guide assembly-7, fixing strip-71, flexible strip-72. Detailed Implementation
[0013] like Figure 1 As shown, this utility model proposes: an antifreeze self-cleaning sprinkler head, including a sprinkler body 1 and a water passage on it, the water passage being vertically connected from top to bottom; A water-blocking plug 2 is attached to the closed end of the water passage to block the water passage. A closed end is set at the bottom of the water passage and blocked by the water-blocking plug 2. A glass column 3 is placed between the nozzle body 1 and the water-blocking plug 2. The bottom end of the glass column 3 contacts the nozzle body 1 and the top end contacts the bottom end of the water-blocking plug 2, thereby supporting and stabilizing the position of the water-blocking plug 2. When the glass column 3 is subjected to the heat of breakage, it breaks and causes the water-blocking plug 2 to fall off. A heating wire 4 is fixedly installed inside the water passage, and water is contained inside the water passage. A temperature sensor 5 is fixedly installed on the outside of the nozzle body 1, and its sensing end extends into the water passage. The heating wire 4 can be an iron-chromium-aluminum heating wire or a nickel-chromium heating wire. It also includes an externally powered PLC controller (not shown in the figure). The heating wire 4 and the temperature sensor 5 are electrically connected to the PLC controller. When the temperature sensor 5 detects that the water temperature in the water passage is too low, it connects the heating wire 4 to generate heat to prevent the water from freezing. The water-blocking plug 2 is fixedly provided with a guiding component 7 that connects to the water passage. The guiding component 7 conducts heat and is close to the glass column 3. The heated water temperature is transferred to the outside of the glass column 3 through the guiding component 7. The glass column 3 can also contact the guiding component 7 to improve the heat transfer intensity, reduce the possibility of breakage in a cold environment, and speed up the response rate, which helps to quickly reach the breakage temperature of the glass column when needed (such as in the event of a fire).
[0014] The guide component 7 has multiple sets that are evenly distributed outside the guide component 7, providing a uniform and efficient heat conduction effect.
[0015] The guiding component 7 includes a fixed strip 71 that runs through both sides of the water-blocking plug 2 and a flexible strip 72 that is attached to one end of the fixed strip 71. The other end of the fixed strip 71 is connected to the water channel, and the flexible strip 72 is located on the outside of the glass column 3. The fixed strip 71 runs through the top and bottom ends of the water-blocking plug 2. The bottom end of the fixed strip 71 can be glued to the flexible strip 72 with adhesive (thermal conductive silicone adhesive and polyurethane adhesive). As shown in the figure, the flexible strip 72 can be embedded in the bottom end of the water-blocking plug 2 and then attached to the fixed strip 71. The flexible strip 72 is glued to the water-blocking plug 2, thus fixing them together. The fixed strip 71 transfers the temperature of the water to the outside of the glass column 3 through the flexible strip 72 or through contact. The guiding component 7 should not be set in too many groups to prevent the flexible strip 72 from blocking the glass column 3 from breaking and falling.
[0016] Among them, the solid strip 71 is made of copper, and the flexible strip 72 is made of thermally conductive silicone. It has good thermal conductivity, and the softness of the flexible strip 72 will not obstruct the glass column 3 when it breaks and will have little impact on the falling of the water-blocking plug 2.
[0017] It also includes an adsorption element 6 installed in the water passage, which is used to reduce the hardness of the water and adsorb small particles to provide a self-cleaning effect.
[0018] The adsorption element 6 is fixed on the water-blocking plug 2 and moves in the closed position. The adsorption element 6 is fixed at the top of the water-blocking plug 2 by means of bonding (using epoxy resin glue or polyurethane glue), so that when the water-blocking plug 2 falls, it can fall down with the adsorption element 6 to reduce the obstruction of water flow. The adsorption element 6 is arranged in a ring shape as shown in the figure and does not block water from contacting the fixed strip 71.
[0019] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A self-cleaning antifreeze sprinkler head, comprising a sprinkler body (1) and a water passage thereon, wherein a water-blocking plug (2) for blocking the water passage is affixed to the closed end of the water passage, a glass column (3) is disposed between the sprinkler body (1) and the water-blocking plug (2), a heating wire (4) is fixedly disposed inside the water passage, water is disposed inside the water passage, and a temperature sensor (5) is fixedly disposed on the outside of the sprinkler body (1) with its sensing end penetrating into the water passage, characterized in that, The water-blocking plug (2) is fixed with a guide component (7) that connects to the water passage. The guide component (7) conducts heat and is close to the glass column (3).
2. The antifreeze self-cleaning sprinkler head according to claim 1, characterized in that, The guide component (7) has multiple sets and is evenly distributed outside the guide component (7).
3. The antifreeze self-cleaning sprinkler head according to claim 2, characterized in that, The guide assembly (7) includes a fixed strip (71) that runs through both sides of the water-blocking plug (2) and a soft strip (72) that is attached to one end of the fixed strip (71). The other end of the fixed strip (71) is connected to the water passage, and the soft strip (72) is located outside the glass column (3).
4. The antifreeze self-cleaning sprinkler head according to claim 3, characterized in that, The material of the solid strip (71) is copper, and the material of the flexible strip (72) is thermally conductive silicone.
5. The antifreeze self-cleaning sprinkler head according to claim 1, characterized in that, It also includes an adsorption element (6) installed in the water passage.
6. The antifreeze self-cleaning sprinkler head according to claim 5, characterized in that, The adsorbent (6) is fixed on the water-blocking plug (2), and the adsorbent (6) moves in the closed position.
Citation Information
Patent Citations
Self-cleaning type sealing dustproof concealed spray head
CN222238633U
Anti-freezing fire sprinkler with high safety
CN222566689U
