WO2008116358A1 - An automatic sprinkling temperature controlling device - Google Patents

Abstract

An automatic sprinkling temperature controlling device which includes a valve and a sprinkler communicated with the valve is disclosed. The valve includes a valve cover, a valve body and a valve rod inside the valve body. A water outlet communicated with an outside waterway is provided in the valve body and a piston or a membrane which closes the water outlet at the normal temperature, is provided in the lower portion of the valve rod. Furthermore, the temperature controlling device includes a temperature sensing head operable connected with the upper portion of the valve rod. The valve rod is controlled by the temperature sensing head so asto open the water outlet while the ambient temperature is up to a predetermined temperature and to close the water outlet again while the ambient temperature reverts to the normal temperature. The device can automatically open or close the valve according to the change of the ambient temperature without any external power so that the water can be saved.

Description

Technical field

 The invention belongs to the field of flow automatic control equipment, and relates to a spray automatic temperature control device, which is mainly applied to a cooling and fire protection system. Background extraction

 In the existing cooling system, for example, the summer cooling of the factory floor and the cooling of some flammable and explosive substances storage tanks all rely on manual operation of the valve to achieve the purpose, and the process requires not only a person to be responsible, but also a random control. The waste of water resources is also great.

 The existing fire-fighting technology is to install a smoke ion sensor and a glass bubble water sprinkler in the room, which can only be used in higher-level building houses such as hotels, restaurants, and office buildings. When the indoor temperature of the glass-type water sprinkler is rapidly increased, the glass bubbles are broken, and the fire water connected to the glass bubbles is sprayed down to suppress the spread of the fire. This disposable device can not cut off the water source on site, and can not automatically close the valve after the temperature is lowered. Therefore, after the fire is extinguished, the broken glass bubble is still sprinkled, and valuable water resources are wasted. Another prior art, namely "smart active fire extinguishing device", is a combination of a rotary sprinkler head and a fire extinguishing controller. Although this device has made some progress over the conventional technology, for example, automatic control spraying of fire water can be realized, but Its obvious drawback is the need for external power control, and in the event of a fire, the site will first be powered off, so the reliability of the device is clearly problematic. Summary of the invention

 The technical problem to be solved by the present invention is to provide a spray automatic temperature control device which can automatically open or cut a water passage according to changes in ambient temperature in view of the above-mentioned disadvantages existing in the prior art.

The technical solution adopted to solve the technical problem of the present invention is that the automatic spray temperature control device comprises a valve and a spray head communicating with the valve, wherein the valve comprises a valve cover, a valve body and a valve stem in the valve body, and the valve body has an external water passage Connected water outlet, the lower end of the valve stem has a piston or a diaphragm, and the piston or diaphragm seals the water outlet at normal temperature; the device also includes a temperature sensing head, sense The temperature head is connected to the upper end of the valve stem. When the ambient temperature reaches the set temperature, the temperature sensing head controls the valve stem to open the water outlet. When the ambient temperature returns to normal, the temperature sensing head control valve stem re-closes the water outlet.

 The temperature sensing head may include an interlocking mechanism connected to the valve stem and a spring-like thermal element that can control the linkage mechanism to move upward or downward on the linkage mechanism, and the interlocking mechanism is located at normal temperature. The position is just such that the piston or diaphragm at the lower end of the valve stem seals the water outlet.

 The top of the valve cover has a sleeve, and the upper end of the valve stem is inserted into the sleeve. The upper end of the valve stem is embedded with a magnetic column assembly, and the lower end of the linkage mechanism connected with the valve stem is sleeved outside the sleeve, and the inside is embedded therein. The magnetic ring assembly magnetically coupled to the magnetic column assembly, the linkage mechanism controls the valve stem by magnetic coupling of the magnetic column assembly and the magnetic ring assembly.

 The linkage mechanism may include a linkage sleeve, a transmission member connected to the lower portion of the linkage sleeve, and a return spring that is sleeved on the transmission member to force the transmission member to be at the bottom of the sleeve. The transmission member is sleeved outside the sleeve and can be sleeved along the sleeve. The tube slides up and down, the top of the return spring bears against the inner wall of the top of the bonnet, and a hole is formed in the top of the bonnet. The upper end of the interlocking sleeve protrudes from the hole, and the heat-sensitive element is sleeved on the upper end of the linkage sleeve.

 In order to prevent the temperature of the valve itself from affecting the temperature sensitive element, the insulating sleeve is fixed with a heat insulating sleeve, and the heat sensitive element is sleeved on the heat insulating sleeve.

 In addition, in order to facilitate the convection of hot air and improve the sensitivity of the temperature-sensitive element to the temperature, a temperature-sensitive cover may be provided on the heat-sensitive element casing, and a plurality of heat-conducting holes may be formed at the top and the periphery of the temperature-sensitive cover, and the temperature-sensitive cover may also be made of metal. The wire mesh is directly processed.

 Preferably, the magnetic ring in the magnetic ring assembly and the magnets in the magnetic column assembly are respectively two sets, and the two magnets are connected in the same polarity, that is, the two magnets in the magnetic ring assembly are magnetically repulsively mounted; The two magnets in the magnetic column assembly are magnetically repulsively mounted. This structure greatly increases the magnetic coupling between the two components.

 The thermosensitive element may be a temperature memory alloy or a paraffin or a warm pack filled with an organic solvent.

 Further preferably, the valve stem further has a pressure relief hole and a pressure relief pad that blocks the pressure relief hole at a normal temperature. Thus, when the valve is opened, the valve stem first lifts the pressure relief pad away from the pressure relief hole, and the water pressure in the upper part of the valve cavity is released through the pressure relief hole, causing the pressure of the diaphragm or the upper and lower end faces of the piston to be equal, and the valve stem can easily put the piston Or lift the diaphragm out of the water outlet in the valve.

In the present invention, the valve using the diaphragm is generally applied to a water system with a large water flow and a low water pressure. In the middle of the system; valves using pistons are generally used in high water pressure water systems.

 The valve is connected to the sprinkler head through a connecting member, and the valve is screwed to one end of the connecting member, and the sprinkler head is rotatably connected to the connecting member, and the outer circumference of the sprinkler head is symmetrically or evenly opened with two or three sprinkling ports; When the pressurized water flows through the communicating member from the two symmetric spraying ports of the sprinkler head, the centrifugal force of the water sprayed from the symmetric two spouts causes the sprinkler head to rotate on the connecting member because the sprinkler head is movably connected with the communicating member. , It becomes an automatic temperature control device for rotatable spraying, so as to achieve a wider spray range.

 The spraying automatic temperature control device of the invention can automatically detect the change of the ambient temperature, and can automatically open according to the preset operating temperature value, and the action of the valve does not need any external power. When the ambient temperature drops, the valve can be automatically closed to avoid waste of water resources. DRAWINGS

 Figure 1 is a schematic view of the structure of the present invention

 In the figure: 1—spray head cover 2—sprinkler head cover 3—bearing 4 one connecting piece 5—relief hole '6—valve body 7—pressure relief pad 8—water outlet 9—magnetic column cover 10—diaphragm 11 a valve stem 12 - valve cover 13 - transmission member 14 a linkage sleeve 15 - temperature sensing cover 16 - bolt 17 - thermal element 18 - bonnet 19 a return spring 20 - magnetic column assembly 21 - magnetic ring assembly 22 - Spray port 23 - insulation sleeve

 The direction indicated by the arrow in the figure is the direction of the water flow. detailed description

 The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

 The following examples are non-limiting examples of the invention.

 As shown in Fig. 1, the spray automatic temperature control device of the present invention comprises a valve, a spray head communicating with the valve through the communication member 4, and a temperature sensing head for controlling the opening and closing of the valve. In this embodiment, the valve uses a valve having a diaphragm type spool.

The valve includes a valve cover 12, a valve body 6 and a valve stem 11 in the valve body 6. The valve body 6 also has a water outlet 8 which is connectable with an external water passage. The valve cover 12 is threadedly mounted on the upper portion of the valve body 6, with a sleeve at the top, and the upper portion of the valve stem 11 is inserted into the sleeve of the valve cover 12. The lower part of the valve stem 11 has a diaphragm 10 which can seal the water outlet 8, and the bottom of the valve stem 11 is also blocked at normal temperature. The pressure relief pad 7 of the pressure relief hole 5 is held.

 The temperature sensing head comprises a linkage sleeve 14, a transmission member 13 connected to the linkage sleeve 14, a return spring 19 which is sleeved on the transmission member 13 for forcing the transmission member to be at the bottom of the sleeve, a bonnet 18, a heat-sensitive element 17, and a cover for heat. A temperature sensing cover 15 outside the sensitive element 17 and threadedly connected to the bonnet 18.

 The lower portion of the interlocking sleeve 14 is coupled to the upper portion of the transmission member 13. The transmission member 13 is sleeved outside the sleeve at the top of the valve cover 12 and is slidable up and down along the sleeve, and the top of the return spring 19 bears against the top inner wall of the bonnet 18. A hole is formed in the top of the bonnet 18, and the upper end of the interlocking sleeve 14 projects from the hole, and a spring-like heat-sensitive element 17 is fitted over the upper end of the interlocking sleeve 14.

 A magnetic ring assembly 21 is embedded in the lower portion of the transmission member 13, and a magnetic column assembly 20 magnetically coupled to the magnetic ring assembly 21 is embedded in the top of the valve stem 11.

 There are two magnets in the magnetic ring assembly 21 in the transmission member 13, which are magnetically repulsively mounted; there are also two magnets in the magnetic column assembly 20 at the top of the valve stem 11, the magnetic properties of which are also repelled; when the transmission member 13 is placed over the valve When the sleeve is covered and slides up and down along the sleeve, the magnetic ring assembly 21 in the transmission member 13 drives the magnetic column assembly 20 (mounted in the magnetic cylinder sleeve 9) on the valve stem 11 to move up and down due to magnetic coupling. , that is, the valve stem 11 is driven to move up and down.

 The upper portion of the interlocking sleeve 14 is fixed with a heat insulating sleeve 23 by bolts, and the heat sensitive member 17 is sleeved outside the heat insulating sleeve 23. A temperature sensing cover 15 is disposed on the outer surface of the heat sensitive element 17, and a heat conducting hole is formed in the top and the periphery of the temperature sensing cover 15.

 The heat-sensitive element 17 can be made of a temperature memory alloy or a paraffin or a warm pack filled with an organic solvent. In this embodiment, the temperature-sensitive element 17 is a temperature memory alloy.

 One end of the connecting member 4 is screwed to the outlet of the M body 6, and the other end is movably connected to the top cover 2 of the sprinkler head by a rolling bearing 3 (or a sliding bearing), and the sprinkler head cover 2 is connected to the sprinkler head cover 1 by bolts, the sprinkler head Two or three spray ports 22 are symmetrically or uniformly opened on the outer circumference of the bottom cover 1.

At normal temperature, the heat-sensitive element 17 is in a contracted state. Due to the compression of the return spring 19, the transmission member 13 is pressed against the bottom of the sleeve on the valve cover 12, and the magnetic ring assembly 21 in the transmission member 13 is magnetically coupled to actuate the valve. The magnetic column assembly 20 in the rod 11 is pushed down, forcing the pressure relief pad 7 at the lower end of the valve stem to seal the pressure relief hole 5, and pressing the diaphragm 10 against the water outlet under the action of water pressure, the valve No water flows out; when the temperature sensor 17 detects the ambient temperature rises through the heat conduction hole on the temperature sensing cover 15 and reaches the set operating temperature, The thermal element 17 is immediately deformed and expanded. Since the lower portion of the spring-like heat-sensitive element 17 has been pressed against the upper portion of the bonnet, the deformation can only push the linkage sleeve 14 upward; the linkage sleeve 1 drives the transmission member 13 upward. Movement, since the magnetic ring in the magnetic ring assembly 21 and the magnet in the magnetic column assembly 20 are respectively connected in two polarities, the magnetic coupling degree of the magnetic ring assembly and the magnetic column assembly is improved, and the interlocking sleeve 14 is moved upward. When the magnetic ring assembly 21 in the transmission member 13 drives the magnetic column assembly 20 in the valve stem 11 to move upward, that is, the valve stem 11 is moved upward, and the pressure relief pad 7 at the lower end of the valve stem 11 first leaves the pressure relief hole 5, the valve The water pressure in the upper part of the chamber is released to the valve outlet through the pressure relief hole, which causes the water pressure on the upper and lower surfaces of the diaphragm 10 to be equal. The valve stem 11 easily drives the diaphragm 10 to leave the water outlet 8 in the valve, and the fire water passes through the water outlet. 8 Flow directly out of the valve body 6.

 The water flow is then ejected from the sprinkler 22 of the sprinkler via the communication member 4. Since the sprinkler head and the communication member 4 are movably connected by the bearing 3, the centrifugal force when water is ejected from the symmetrical spout, so that the sprinkler head is in the communicating member 4 Rotate up to achieve a wider spray effect.

 When the ambient temperature drops below the set temperature value, the thermosensitive element 17 returns to its original contracted state, and the valve is closed again by the action of the return spring, the water flow is cut off, and the spraying stops.

Claims

Claim A spray automatic temperature control device comprising a valve and a sprinkler head connected to the valve, wherein the valve comprises a valve cover (12), a valve body (6) and a valve stem (11>, a wide body (6) There is an ice outlet (8) which can communicate with the external waterway. The lower end of the valve stem (11) has a piston or a diaphragm (10), and the piston or diaphragm seals the water outlet (8) at normal temperature; the device also includes There is a temperature sensing head, and the temperature sensing head is connected with the upper end of the valve stem (11). When the ambient temperature reaches the set temperature, the temperature sensing head controls the valve stem to open the water outlet. When the ambient temperature returns to normal, the temperature sensing head is controlled. The valve stem recloses the water outlet. 2. The automatic spray temperature control device according to claim 1, wherein the temperature sensing head comprises a linkage mechanism that is connected to the valve stem (11), and the linkage mechanism controls the linkage mechanism upward or The spring-like thermal element (17) moves downwards, and the interlocking mechanism is placed at a normal temperature so that the piston or diaphragm (10) at the lower end of the wide rod (11) seals the water outlet (8). 3. The automatic spray temperature control device according to claim 2, wherein the valve cover (12) has a sleeve at the top, the upper end of the valve stem (11) is inserted into the sleeve, and the magnetic rod assembly is embedded at the upper end of the valve stem (20) The lower end of the linkage mechanism that is in control connection with the valve stem (11) is sleeved outside the sleeve, and has a magnetic ring assembly (21) magnetically coupled to the magnetic column assembly (20). 4. The automatic spray temperature control device according to claim 3, wherein the linkage mechanism comprises a linkage sleeve (14), a transmission member (13) connected to a lower portion of the linkage sleeve, and a transmission member (13). a return spring (19) and a bonnet (18) forcing the transmission member at the bottom of the sleeve, the transmission member (13) is sleeved outside the sleeve and can slide up and down along the sleeve, and the top of the return spring (19) The inner wall of the top of the bonnet is opened, and a hole is formed in the top of the bonnet. The upper end of the oscillating sleeve protrudes from the hole, and the heat-sensitive element (17) is sleeved on the upper end of the oscillating sleeve. 5. The automatic spray temperature control device according to claim 4, characterized in that the insulating sleeve (14) is fixed with a heat insulating sleeve (23), and the heat sensitive element (17) is sleeved on the heat insulating sleeve. 6. The automatic spray temperature control device according to claim 4, characterized in that the temperature sensitive element (17) is jacketed with a temperature sensing cover (15), and the temperature sensing cover can be provided with a plurality of heat conduction holes. 7. The automatic spray temperature control device according to claim 3, characterized in that the magnetic ring in the magnetic ring assembly (21) and the magnets in the magnetic column assembly (20) are respectively two groups, and two and two homopolar Sexually connected installation. 8. The automatic spray temperature control device according to claim 2, characterized in that the heat sensitive element (17) is a temperature memory alloy or a paraffin or a warm pack filled with an organic solvent. The automatic spray temperature control device according to claim 1, characterized in that the valve stem further has a pressure relief hole (5) and a pressure relief pad (7) for sealing the pressure relief hole at a normal temperature. 10. The automatic spray temperature control device according to any one of claims 1-9, characterized in that the valve is connected to the sprinkler head through a communication member (4), the valve is connected to one end of the communication member, and the sprinkler head is rotatably connected. On the connecting member, a spray port (22) is formed on the outer circumference of the sprinkler head to become an automatic temperature control device for rotatable spraying.