CN110617544A - High underfloor heating system of security - Google Patents
High underfloor heating system of security Download PDFInfo
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- CN110617544A CN110617544A CN201910827817.9A CN201910827817A CN110617544A CN 110617544 A CN110617544 A CN 110617544A CN 201910827817 A CN201910827817 A CN 201910827817A CN 110617544 A CN110617544 A CN 110617544A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a high-safety floor heating system which comprises a hot water coil laid on the ground, a control device with a control circuit and a temperature control probe electrically connected with the control circuit, wherein one end of the hot water coil is provided with a water inlet, the other end of the hot water coil is provided with a water return port, a heating cable penetrates through the hot water coil, two ends of the heating cable respectively penetrate through the water inlet and the water return port to be electrically connected with the control circuit, the control device comprises a water pump, and the water pump is respectively connected with the water inlet and a recovery port through a connecting pipeline. The invention can realize the uniformity of temperature rise of the whole room and effectively eliminate the potential safety hazard caused by overhigh temperature rise.
Description
Technical Field
The invention relates to the technical field of floor heating, in particular to a floor heating system with high safety.
Background
When the existing indoor heating in winter is carried out, the air conditioner is a common heating mode, has the characteristics of convenience in installation, flexibility in use, high temperature rise, low cost and the like, and has the defects of uneven temperature, influence on environment temperature and the like. With the improvement of living standard of people, room heating is increasingly popularized by installing floor heating systems indoors. The existing floor heating system has two modes, the first mode is a pure electric heating mode, and the principle is that a heating cable buried in a concrete layer is laid on the ground, then decorative layers such as floors, floor tiles and the like are laid on the heating cable, and a temperature control probe is arranged at the corner of a room. When the heating cable is electrified, the whole ground can be heated, and then the heating of the whole room is realized. When the temperature detected by the temperature control probe reaches a set temperature value, the controller cuts off the power supply of the heating cable; thereby achieving accurate temperature control. However, this method has the following disadvantages: because the quantity of control by temperature change probe is limited, consequently, can't accurately detect the temperature of whole ground, local region high temperature appears easily when the ground has the covering (for example, lay tatami, yoga mat etc. on the floor), and this region is inconvenient to set up control by temperature change probe usually, therefore is difficult to implement the controller temperature, and serious probably leads to heating cable damage, even the scheduling problem of catching a fire, influences the security that floor heating used. The second is the water heating type, namely, a hot water pipe buried in a concrete layer is laid on the ground, one end of the hot water pipe is a water inlet, the other end of the hot water pipe is a water return port, then hot water is generated through a gas device or an electric heating device, and the hot water forms circulating flow in the water pipe in a pumping mode, so that heating of a room is realized. It can be understood that the heating mode is similar to that of a radiator, and because the whole pipeline is in a series mode, the temperature of hot water from the water inlet to the water return port can be greatly different, so that the ground temperature is not uniform. That is to say, the floor heating system detects the temperature of the room through the temperature control probe, and then controls the working state of the electric heating device of the gas device, so as to control the temperature of the room. Because the temperature of the hot water pipe is greatly different from the water inlet to the water return port, the temperature control probe cannot actually detect the real temperature of a room. In particular, when the area of the room is relatively large, the above-described unevenness of the temperature is more prominent.
In addition, the hot water pipe of the water heating type floor heating is embedded in the concrete layer, so that the uniform conduction of temperature is facilitated, and the condition that the zebra-shaped fading traces appear on the surface of the floor due to the fact that the temperature is higher at the position where the hot water pipe is laid is avoided. Therefore, once local leakage of the hot water pipe occurs, people can hardly accurately judge the position of the fault point, and only can pry off the concrete layer and reinstall the whole floor heating system, so that the maintenance and use cost is greatly increased.
Disclosure of Invention
The invention aims to solve the problems that the existing floor heating system is uneven in temperature and prone to potential safety hazards caused by local overhigh temperature, and the like.
The second purpose of the invention is to solve the problems that the fault position is difficult to accurately locate and the later maintenance and use cost is high in the existing floor heating system, and provide a floor heating system with high safety, which can accurately detect the fault position, thereby greatly reducing the later maintenance and use cost and reducing the maintenance workload.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high underfloor heating system of security, is including laying the hot water coil pipe on ground, having control circuit's controlling means, the control by temperature change probe of being connected with the control circuit electricity, and hot water coil pipe one end is the water inlet, and the other end is the return water mouth, wear to be equipped with heating cable in the hot water coil pipe, water inlet and return water mouth are worn out respectively at heating cable's both ends and are connected with the control circuit electricity, and controlling means includes a water pump, and the water pump is connected with water inlet, recovery mouth respectively through connecting tube.
Different from the prior art, the invention organically combines the electric heating mode and the water heating mode, and a heating cable is arranged in the hot water coil in a penetrating way. When the heating is needed, the control circuit enables the heating cable to be electrified and generate heat, and water circulation is formed in the hot water coil pipe when the water pump operates, so that hot water is formed by uniformly heating water flow. The heating device has the advantages of water heating safety and simple and convenient electric heating. In particular, when the ground is covered with a covering to affect heat dissipation, the flowing hot water can effectively take away heat in time, so that the temperature of the whole hot water coil and the whole room is kept balanced. When the temperature detected by the temperature control probe reaches the temperature set by the control device, the heating cable can be powered off, so that the temperature is kept at the set temperature value. Since the temperature of the hot water is surely below the boiling point, it is ensured that no safety accident due to local excessive temperature occurs.
Preferably, a water temperature sensor for detecting a water temperature is provided in the water return port of the hot water coil, and the water temperature sensor is electrically connected to the control circuit.
The water temperature sensor can timely detect the water temperature in the hot water coil. When local ground has the covering and influence the heat dissipation, can make the rivers in the hot water coil produce certain temperature difference, controlling means accessible detects the water temperature difference of hot water coil, accurately judges whether ground has the covering and leads to the temperature not enough even, and then sends out the police dispatch newspaper in time, reminds the user to notice.
Preferably, a plurality of one-way valves which are communicated from the water inlet to the water outlet in a one-way mode are arranged in the heating coil, the one-way valves are arranged at intervals in the length direction of the heating coil, a pressure sensor used for detecting water pressure is arranged in the heating coil between the adjacent one-way valves, the pressure sensor is electrically connected with the control circuit, a first stop valve is arranged on a connecting pipeline on one side of the water pump, which is connected with the water inlet, and a second stop valve and a bypass pipeline connected with running water are arranged on a connecting pipeline on one side of the water pump, which is connected.
It is known that the check valve allows water to smoothly flow forward from the water inlet side to the water return side in the hot water coil, but effectively prevents water from flowing backward from the water return side to the water inlet side. The one-way valve separates a plurality of sections of coil units in the hot water coil.
After the floor heating system is used for a certain time, the user can actively detect the floor heating system. Specifically, the second stop valve is closed, the water pump and the bypass pipeline are opened, and at the moment, tap water supplies water for the water pump and is input into the hot water coil. When the hot water coil is filled with water and the pressure is increased to the detection pressure, the first stop valve and the bypass pipeline are closed, and the hot water coil keeps the detection pressure for a certain time. If the pressure of each section of coil unit of the hot water coil displayed by the control device is kept unchanged, the hot water coil is not leaked, so that the hot water coil can be continuously used normally; if the pressure value of one of the pressure sensors displayed by the control device gradually drops, the leakage of the coil unit at the section corresponding to the pressure sensor is indicated.
In particular, the present invention is separated between the two sections of the coil unit by a one-way valve. Therefore, when a section of coil unit leaks and the pressure drops gradually, the water in the adjacent upstream coil unit will push the check valve to partially replenish the leaking coil unit, so that the pressure drops gradually. In the same way, the water pressure of a plurality of upstream coil units which are sequentially connected with the leaked coil units is gradually reduced. The user can conveniently and accurately judge the water leaking coil pipe unit by observing the pressure value change corresponding to each pressure sensor, thereby effectively avoiding a large amount of water leaking accidents of the hot water coil pipe.
Preferably, the heating coil comprises a plurality of coil units connected in series through pipe joints, at least part of the pipe joints are straight-through two-way joints, the inner holes of the two-way joints comprise threaded holes at two ends, a sliding hole which is close to the cylindrical shape on one side of the water return port and a locking hole which is close to the conical shape on one side of the water inlet, the big end of the locking hole is connected with the sliding hole, the check valve comprises a valve core matched with the locking hole and a sliding sleeve arranged in the opening of the sliding hole, a supporting rib which radially extends and is connected to the inner side wall of the sliding hole is arranged on the circumferential surface of the sliding sleeve, a positioning rod inserted in the sliding sleeve is arranged on the end surface of the valve.
The one-way valve is creatively arranged in the two-way joint, so that the one-way valve is convenient to install and use, and the cost is reduced. When water flow in the hot water coil pipe flows forwards, the water flow can push the valve core to overcome the elasticity of the reset pressure spring and move towards one side of the sliding hole, the check valve is in a conduction state at the moment, and hot water can flow towards one side of the water return port through the locking hole, a gap between the valve core and the inner hole of the two-way connector and the sliding hole. When the pressure of one side of the water return opening in the hot water coil pipe is higher than the pressure of one side of the water inlet, the valve core is pushed by the thrust of water flow and the elasticity of the reset pressure spring to move towards one side of the locking hole together, then the valve core is tightly attached to the locking hole, and the check valve is in a cut-off state at the moment.
The positioning rod connected with the valve core is connected in the sliding sleeve in a sliding mode, so that the valve core can be well guided to the moving stroke, and meanwhile, the positioning rod can prevent the reset pressure spring from being bent and deformed after being pressed.
Preferably, the positioning rod is in threaded connection with the sliding sleeve, a first water guide groove extending along the axial direction is formed in a conical surface on the outer side of the valve core, a second water guide groove extending along the axial direction to a junction with the locking hole is formed in the inner side wall of the sliding hole, an accommodating groove is formed in the large end of the valve core, the positioning rod is arranged on the bottom surface of the accommodating groove, one end of the reset pressure spring abuts against the sliding sleeve, the other end of the reset pressure spring abuts against the bottom surface of the accommodating groove, when the valve core abuts against the locking hole, the valve core is located at a cut-off position, and the first water guide groove and; when the limiting disc is attached to the sliding sleeve, the valve core is located at a conducting position, and the first water guide groove and the second water guide groove are partially overlapped in the axial direction and are overlapped in the circumferential direction.
In this scheme, locating lever and sliding sleeve threaded connection, when the case is in the stop position of pasting and leaning on the locking hole, first guiding gutter and second guiding gutter all misplace in circumference and axial. When the valve core is extruded by water flow and moves to a conducting position towards one side of the sliding hole, the first water guide groove and the second water guide groove are partially overlapped in the axial direction, and meanwhile, the valve core can simultaneously rotate, so that the first water guide groove and the second water guide groove are overlapped in the circumferential direction. That is, the first water guide groove and the second water guide groove are connected at this time, and the hot water can flow to the side of the water return port through the locking hole, the first water guide groove, the second water guide groove, and the sliding hole.
It should be noted that the outer diameter of the large end of the valve core can be matched with the inner diameter of the sliding hole. When the valve core moves towards one side of the sliding hole, the one-way valve is still in a cut-off state, so that the valve core can continuously move; the one-way valve can be instantly conducted within an extreme time until the valve core rotates to the conducting position. That is, the check valve of the prior art generally has a gradually opening conducting process, and the pressure difference between the two cavities changes after conducting, thereby causing the state of the check valve to be unstable, whereas the check valve of the present invention is always in the cut-off state during the initial valve core moving and opening process. Therefore, when a user actively detects the floor heating system, if water leakage occurs in one section of the coil unit, the pressure in the adjacent coil unit at the upstream of the coil unit is higher than that of the leaked coil unit, the valve core can gradually move towards one side of the sliding hole under the action of pressure difference, correspondingly, the space of the leaked coil unit is reduced, the pressure reduction speed is reduced, the pressure of the adjacent coil unit at the upstream is gradually reduced, and the one-way valve is switched on until the pressure difference is greater than the lowest starting pressure of the one-way penalty. Because the section of the water flow of the first water guide groove and the second water guide groove is smaller when the first water guide groove and the second water guide groove are just communicated, the state that the valve core returns to the original position due to the fact that the pressure difference is greatly reduced after the first water guide groove and the second water guide groove are communicated can be avoided.
Preferably, a bypass interface is arranged on the circumferential surface of the two-way connector, a sleeve cover in sealing connection is sleeved on the bypass interface, the pressure sensor comprises an elastic diaphragm arranged at the opening of the bypass interface, a convex ring abutting against the elastic diaphragm is arranged on the inner side of the sleeve cover, a guide rod extending towards one side far away from the bypass interface is arranged at the center of the elastic diaphragm, a magnet is embedded in the guide rod, two reed pipes are arranged at intervals along the axial direction of the guide rod on the sleeve cover, and when the elastic diaphragm deforms and the magnet is close to the first reed pipe, the control device displays a low-pressure signal; when the magnet is close to the second reed switch, the control device displays a high pressure signal.
The present invention is directed to a pressure sensor disposed at a two-way joint to quickly and accurately sense a pressure change of a coil unit. When the water pressure in the coil unit rises to the detection pressure, the water pressure enables the elastic diaphragm to bulge outwards, so that the guide rod is driven to move axially, the magnet on the guide rod is close to the second reed pipe, the second reed pipe outputs an electric signal to the control circuit, and the control device displays a high-pressure signal; when the water pressure in the coil unit gradually decreases, the elastic membrane retracts inwards to reset, so that the guide rod is driven to move axially, the magnet on the guide rod is close to the first reed pipe, the first reed pipe outputs an electric signal to the control circuit, and the control device displays a low-pressure signal. That is, the pressure sensor of the present invention can output two high and low pressure signals, thereby facilitating the simplification of the structure, the convenient assembly, and the stable and reliable long-time operation. Of course, to facilitate viewing, we could have the high pressure signal show a red light and the low pressure signal show a green light.
When a user needs to actively detect the floor heating system, when the pressure of one coil unit is gradually reduced to a low pressure value due to water leakage, the pressure of the adjacent coil unit at the upstream of the coil unit is also gradually reduced to the low pressure value. The coil pipe unit with water leakage can be accurately judged according to the sequence and time of reaching the low pressure value, namely the lighting sequence of the green light. That is, the pressure sensor with high and low output signals can meet the use requirement of the invention, and meanwhile, the detection and judgment of detection personnel are convenient.
Preferably, the sleeve cover comprises a cylindrical connecting section, one end of the connecting section is in threaded connection with the bypass connector, the other end of the connecting section is provided with an integrated sealing cover, the convex ring is integrally arranged on the inner side wall of the connecting section, the end part of the guide rod provided with the magnet is connected in the sealing cover in a sliding mode, and the reed pipe is embedded in the side wall of the sealing cover.
The sleeve cover is in threaded connection with the bypass connector, so that the assembly and the maintenance of the sleeve cover are facilitated, and the pressure of the convex ring on the elastic diaphragm is conveniently adjusted. The guide rod is connected with the sealing cover in a sliding way, so that the guide rod can form stable support when moving axially, and the reed pipe embedded on the outer side wall of the sealing cover is convenient to install and is convenient to be electrically connected with the control circuit through a lead.
Therefore, the invention has the following beneficial effects: the temperature rise of the whole room can be realized, and the potential safety hazard caused by overhigh temperature rise can be effectively eliminated. And the position of a fault point can be accurately detected, so that the later maintenance use cost is greatly reduced, and the maintenance workload is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Figure 2 is a schematic cross-sectional view of a hot water coil of the present invention.
Fig. 3 is a schematic diagram of a structure of the manual supercharging device.
Fig. 4 is a schematic view of another arrangement of the hot water coil.
Fig. 5 is a schematic view of a one-way valve.
Fig. 6 is a schematic diagram of a pressure sensor.
In the figure: 1. the water heater comprises a hot water coil 11, a water inlet 12, a water return port 13, a heating cable 14, a split ring 141, a first straight section 142, a second straight section 15, a two-way joint 151, a sliding hole 152, a locking hole 153, a second water guide groove 154, a bypass interface 16, a sleeve cover 161, a convex ring 162, a reed pipe 163, a connecting section 164, a sealing cover 2, a plug 3, a water pump ring 40, an elastic diaphragm 41, a guide rod 42, a magnet 43, a clamping piece 5, a first stop valve 6, a second stop valve 7, a bypass pipeline 8, a manual increasing device 81, a cylinder 82, a piston 83, a pressure cavity 84, a return spring 85, an upper cover 86, a pressurizing rod 87, a radial handle 90, a valve core 901, a first water guide groove 902, an accommodating groove 91, a sliding sleeve 92, a supporting rib 93 and a.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1 and fig. 2, a high underfloor heating system of security, including lay hot water coil 1 in the concrete ground, control device with control circuit, the control by temperature change probe (not shown in the figure) of being connected with control circuit electricity, hot water coil one end is water inlet 11, and the other end is return water mouth 12, wear to be equipped with heating cable 13 in the hot water coil, water inlet and return water mouth are worn out respectively to heating cable's both ends and are connected with control circuit electricity, and control device includes a water pump 3, and the water pump is connected with water inlet, recovery mouth respectively through connecting tube.
Different from the prior art, the invention organically combines the electric heating mode and the water heating mode, and a heating cable is arranged in the hot water coil in a penetrating way. When heating is needed, the control circuit enables the heating cable to be electrified and generate heat, the whole heating cable generates heat uniformly, and the temperature of the heating cable in unit length is reduced remarkably on the premise that the total power meets the heating requirement, so that the potential safety hazard caused by high temperature of the heating cable is avoided. Meanwhile, the water pump runs, water circulation is formed in the hot water coil pipe, and the heating cable enables water flow to be uniformly heated to form hot water. When the temperature detected by the temperature control probe reaches the temperature set by the control device, the heating cable can be powered off, so that the temperature is kept at the set temperature value.
When the floor is provided with coverings such as blankets and yoga mats to affect heat dissipation, the flowing hot water can effectively take away heat in time, so that the temperature of the whole hot water coil and the whole room is kept balanced. Since the temperature of the hot water is surely below the boiling point, it is ensured that no safety accident due to local excessive temperature occurs.
As a preferred scheme, a water temperature sensor for detecting the water temperature can be arranged in a water return opening of the hot water coil pipe, and the water temperature sensor is electrically connected with the control circuit so as to detect the water temperature in the hot water coil pipe in time.
When the floor heating system starts to work, heat generated by the heating cable is transferred to hot water flowing in the hot water coil, the hot water transfers the heat to the hot water coil, and the hot water coil transfers the heat to the ground, so that the temperature of the whole room rises. That is, the temperature is gradually decreased from the heating cable, the hot water coil to the ground in the whole system. In addition, for the slender hot water coil, the hot water in the slender hot water coil flows in a substantially laminar state, and is stirred by the blades of the water pump to form a warm flow only at the position of the water pump.
When the local ground is covered to affect heat dissipation, the heat dissipation of the ground and the hot water coil in the area is slowed and the temperature is raised, accordingly, the heat dissipation of the water flow flowing through the hot water coil is reduced, and a certain temperature difference is formed compared with the hot water in other parts. That is to say, the hot water that flows out from the return water mouth has the phenomenon of "suddenly cold suddenly hot", and controlling means accessible detects the temperature difference of hot water coil pipe return water mouth, accurately judges whether ground has the covering and leads to the temperature not enough even, and then sends out the police dispatch newspaper in time, reminds the user to pay attention to.
As another preferred scheme, a plurality of one-way valves which are communicated from the water inlet to the water outlet in a one-way mode can be arranged in the heating coil, and the one-way valves are arranged at intervals in the length direction of the heating coil, so that the hot water coil is divided into a plurality of coil units. In addition, a pressure sensor for detecting water pressure is arranged in the coil unit between two adjacent one-way valves, and the pressure sensor is electrically connected with the control circuit. That is, the control device can accurately display the real-time water pressure of each coil unit. In addition, a first stop valve 5 is arranged on a connecting pipeline on one side of the water inlet connected with the water pump, a second stop valve 6 is arranged on a connecting pipeline on one side of the water return port connected with the water pump, and a bypass pipeline 7 connected with tap water is arranged on the connecting pipeline between the water pump and the second stop valve.
When the floor heating system works normally, the check valve can enable water flow to smoothly flow forward to one side of the water return port from one side of the water inlet in the hot water coil pipe. After the floor heating system is used for a certain time, a user can actively detect the floor heating system so as to effectively avoid serious consequences caused by sudden and large water leakage of the hot water coil pipe.
Specifically, the second stop valve can be closed, the water pump and the bypass pipeline can be opened, and tap water supplies water for the water pump and is input into the hot water coil pipe. When the hot water coil is filled with water and the pressure is increased to the detection pressure, the first stop valve and the bypass pipeline are closed, the hot water coil keeps the detection pressure for a certain time, and the hot water coil forms a closed loop. If the pressure corresponding to each coil unit displayed by the control device is kept unchanged, the hot water coil is not leaked, so that the hot water coil can be continuously used normally; if the pressure corresponding to one of the coil units displayed by the control device gradually drops, the leakage of the coil unit corresponding to the section of the pressure sensor is indicated.
It can be understood that a corresponding stop valve can be arranged on the bypass pipeline to control the on-off of the bypass pipeline.
The two sections of coil units are separated by the one-way valve. Therefore, when a section of coil unit leaks and the pressure drops gradually, the water in the adjacent upstream first coil unit will push away the check valve and partially replenish the leaking coil unit, so that the pressure of the adjacent first coil unit also drops gradually. In the same way, the water pressure of the upstream second and even third coil units connected with the leaked coil unit is gradually reduced. The user can conveniently and accurately judge the water leaking coil pipe unit by observing the pressure value corresponding to each coil pipe unit and the change sequence of the pressure, thereby effectively avoiding a large amount of water leakage accidents of the hot water coil pipe.
In the present embodiment, the water inlet side of the hot water coil is referred to as upstream, the water return side of the hot water coil is referred to as downstream, and the flow of water from the water inlet side to the water return side is referred to as forward flow, whereas reverse flow is referred to. In addition, when water leaks from a coil unit, if the amount of water leakage is small, the number of upstream coil units affected by the water leakage is small, and the number of upstream coil units affected by the water leakage is large. That is, we can judge the leakage state of the coil unit by observing the number of the coil units with reduced pressure and the speed of the reduction, so as to adopt the corresponding proper means to perform effective maintenance on the hot water coil. For example, when the leakage water is very little, hot water in the hot water coil can be pumped out by a water pump, and then leakage repairing glue like tire repair liquid is filled in the hot water coil, and the glue can be extruded into the gap of the hot water coil to be solidified quickly, so that the hot water coil can be used normally again. When the water leakage of the hot water coil is large, the concrete ground needs to be excavated to replace the damaged coil unit.
In order to facilitate the pressure rise of the hot water coil, the water pump can adopt a booster pump so that the hot water coil can reach a higher detection pressure. Of course, the water pressure of the hot water coil can be increased by a manual pressurizing device.
Specifically, as shown in fig. 1 and 3, a three-way joint may be disposed on a connection pipeline between the first stop valve and the water inlet, and a plug 2 may be disposed at a bypass hole of the three-way joint, so as to seal the connection pipeline. And the manual pressurizing device 8 comprises a vertical cylinder 81 with a sealed lower part, and a piston 82 arranged in the cylinder, so that a pressure chamber 83 is formed at the lower part of the cylinder. The lower part of the cylinder body is provided with a connecting pipe communicated with the pressure cavity, the pressure cavity is internally provided with a return spring 84 which is pressed against the lower surface of the piston, the opening of the upper part of the cylinder body is provided with an upper cover 85, the center of the upper cover is in threaded connection with a vertical pressurizing rod 86, the lower end of the pressurizing rod is hemispherical and is pressed against the upper surface of the piston, and the upper end of the pressurizing rod is provided with a radial handle 87.
When the pressure in the hot water coil needs to be increased to detect the hot water coil, the first stop valve and the second stop valve can be closed firstly, then the plug is screwed off, and the connecting pipe on the cylinder body is connected with the bypass hole of the three-way joint. At the moment, the bypass pipeline is connected with a tap water faucet, and the first stop valve, the second stop valve and the water pump are opened, so that tap water can flow into the hot water coil pipe and the pressure cavity of the cylinder body through the bypass pipeline. Then the first stop valve, the second stop valve and the bypass pipeline are closed, the radial handle is rotated, the pressurizing rod is moved downwards axially, the piston is driven to move downwards, the pressure in the pressure cavity and the pressure in the hot water coil pipe are gradually increased, and therefore the water pressure of the hot water coil pipe can be accurately adjusted.
The hot water coil pipe of the invention can adopt serpentine arrangement as shown in figure 1 so as to be convenient for connecting the water inlet and the water return port with the water pump through a connecting pipeline. Or, the hot water coil can also be arranged in a rectangular mosquito-repellent incense form from inside to outside as shown in fig. 4, the water inlet on the outer side of the hot water coil can be directly connected with the water pump through a connecting pipeline, and the water return port on the inner side of the hot water coil can be connected with the water pump through a connecting pipeline laid on the upper side of the hot water coil. Specifically, the hot water coil includes a plurality of split rings 14 which are gradually increased from inside to outside, each split ring includes a first straight section 141 along the length direction and a second straight section 142 along the width direction, and the first straight section of each split ring from inside to outside is once prolonged, and the second straight section is also once increased. The initial section of the innermost split ring is a half-section first straight section, then is connected with a section of second straight section, then is connected with a section of first straight section, then is connected with a section of second straight section, and then is connected with a half-section first straight section, so that a split ring … … is formed by analogy, and a plurality of split rings which are connected in sequence and are gradually enlarged can be formed. A two-way joint can be arranged in the middle of the first straight section, and the first straight section and the second straight section can be connected through an arc-shaped bend or through a 9-degree bent joint. That is, the coil units of the heating coil are connected by pipe joints, and at least some of the pipe joints are straight-through two-way joints.
As shown in fig. 5, the inner hole of the two-way joint 15 includes a threaded hole with two ends connected with the coil unit, a cylindrical sliding hole 151 near the water return port, and a conical locking hole 152 near the water inlet port, and the large end of the locking hole is connected with the sliding hole. It should be noted that, for the plastic hot water coil made of pert pipe, the two-way joint can be hermetically connected with the coil unit by hot melting.
In addition, the check valve includes that the adaptation is at downthehole case 90 of locking, set up sliding sleeve 91 in the sliding hole opening, set up 4 radial extensions on the sliding sleeve periphery and be connected to the support rib 92 of the downthehole lateral wall of sliding, the case sets up the locating lever 93 of pegging graft in the sliding sleeve near the terminal surface center of sliding sleeve, be located the case and overlap on the locating lever between the sliding sleeve and establish a pressure spring 94 that resets, pressure spring one end that resets supports presses the sliding sleeve, the other end supports presses the case to make the case support and lean on the downthehole lateral wall of locking.
When water flow in the hot water coil pipe flows forwards, the water flow can push the valve core to overcome the elasticity of the reset pressure spring and move towards one side of the sliding hole, the check valve is in a conduction state at the moment, and hot water can flow towards one side of the water return port through the locking hole, a gap between the valve core and the inner hole of the two-way connector and the sliding hole. When no hot water flows in the hot water coil pipe or the pressure on one side of the water return port is higher than the pressure on one side of the water inlet, the valve core moves towards one side of the locking hole under the combined action of the elasticity of the reset pressure spring and the thrust of the water pressure, and then is tightly attached to the locking hole, and the check valve is in a cut-off state at the moment.
Furthermore, the positioning rod can be in threaded connection with the sliding sleeve, a first water guide groove 901 extending along the axial direction is formed in the conical surface on the outer side of the valve core, a second water guide groove 153 extending to the junction with the locking hole along the axial direction is formed in the inner side wall of the sliding hole, an accommodating groove 902 is formed in the center of the large end of the valve core, the positioning rod is arranged on the bottom surface of the accommodating groove, one end of the reset pressure spring abuts against the sliding sleeve, and the other end of the reset pressure spring enters the accommodating groove and abuts against the bottom surface of the accommodating groove. When the valve core is attached to the locking hole, the valve core is located at the cut-off position, and the first water guide groove and the second water guide groove are staggered in the circumferential direction and the axial direction, namely, the first water guide groove and the second water guide groove are mutually disconnected; when the valve core overcomes the elasticity of the reset pressure spring and is attached to the sliding sleeve, the valve core is located at a conducting position, the first water guide groove and the second water guide groove are overlapped and overlapped in the axial direction and overlapped in the circumferential direction, namely, the first water guide groove and the second water guide groove are communicated at the moment, hot water can flow to one side of the water return port through the locking hole, the first water guide groove, the second water guide groove and the sliding hole, and the reset pressure spring is compressed in the accommodating groove.
It should be noted that, we can make the valve core into a cone frustum shape, and the outer diameter of the big end of the valve core matches with the inner diameter of the sliding hole. When the valve core moves towards one side of the sliding hole, the one-way valve is still in a cut-off state, so that the valve core can continuously move; the one-way valve can be instantly conducted within an extreme time until the valve core rotates to the conducting position. When a user actively detects the floor heating system, if water leakage occurs in one section of the coil unit, the pressure in the adjacent coil unit at the upstream of the coil unit is higher than that of the leaked coil unit, at the moment, the valve core can gradually move towards one side of the sliding hole under the action of pressure difference, correspondingly, the space of the leaked coil unit is reduced, the pressure reduction speed is reduced, the pressure of the adjacent coil unit at the upstream is gradually reduced, and the one-way valve is switched on until the pressure difference is greater than the lowest starting pressure of the one-way penalty. Because the section of the water flow of the first water guide groove and the second water guide groove is smaller when the first water guide groove and the second water guide groove are just communicated, the state that the valve core returns to the original position due to the fact that the pressure difference is greatly reduced after the first water guide groove and the second water guide groove are communicated can be avoided.
Furthermore, as shown in fig. 5 and 6, a bypass port 154 communicating with the sliding hole may be further disposed on the outer circumferential surface of the two-way joint, and a cover 16 for sealing connection is sleeved on the bypass port. The pressure sensor comprises an elastic diaphragm 40 arranged at the opening of the bypass interface, an annular convex ring 161 abutting against the elastic diaphragm is arranged on the inner side of the sleeve cover, a guide rod 41 extending towards one side far away from the bypass interface is arranged at the center of the elastic diaphragm, a magnet 42 is embedded in the end part of the guide rod, and two reed pipes 162 arranged at intervals along the axial direction of the guide rod are arranged on the sleeve cover.
When the water pressure in the coil unit rises to the detection pressure, the water pressure enables the elastic diaphragm to bulge outwards, so that the guide rod is driven to move axially, the magnet on the guide rod is close to the second reed pipe, the second reed pipe outputs an electric signal to the control circuit, and the control device displays a high-pressure signal; when the water pressure in the coil unit gradually decreases, the elastic membrane retracts inwards to reset, so that the guide rod is driven to move axially, the magnet on the guide rod is close to the first reed pipe, the first reed pipe outputs an electric signal to the control circuit, and the control device displays a low-pressure signal. For the convenience of observation, we can make the high pressure signal show a red light and the low pressure signal show a green light.
Therefore, when a user needs to actively detect the floor heating system, when the pressure of one coil unit is gradually reduced to a low pressure value due to water leakage, the pressure of the adjacent coil unit at the upstream of the coil unit is also gradually reduced to the low pressure value. The coil pipe unit with water leakage can be accurately judged according to the sequence and time of reaching the low pressure value, namely the lighting sequence of the green light.
Specifically, the cap includes a cylindrical connecting section 163, one end of the connecting section is screwed to the bypass port, an opening at the other end of the connecting section is provided with an integrated cap 164, the convex ring is integrally provided on the inner side wall of the connecting section, the end of the guide rod provided with the magnet is slidably connected in the cap, and the reed pipe is embedded in the side wall of the cap.
The sleeve cover is connected to the bypass connector in a threaded mode, assembly and maintenance of the bypass connector are facilitated, pressure of the convex ring on the elastic diaphragm is convenient to adjust, and the reed pipe is electrically connected with the control circuit through a lead attached to the outer side of the hot water coil pipe.
Claims (7)
1. The utility model provides a high underfloor heating system of security, is including laying the hot water coil pipe on ground, having control circuit's controlling means, the control by temperature change probe of being connected with the control circuit electricity, and hot water coil pipe one end is the water inlet, and the other end is the return water mouth, characterized by, wear to be equipped with heating cable in the hot water coil pipe, water inlet and return water mouth are worn out respectively at heating cable's both ends and are connected with the control circuit electricity, and controlling means includes a water pump, and the water pump is connected with water inlet, recovery mouth respectively through connecting tube.
2. The high-safety floor heating system as claimed in claim 1, wherein a water temperature sensor for detecting a water temperature is provided in a water return port of the hot water coil, and the water temperature sensor is electrically connected to the control circuit.
3. The high-safety floor heating system of claim 1, wherein a plurality of check valves which are communicated in a one-way mode from a water inlet to a water outlet are arranged in the heating coil, the check valves are arranged at intervals in the length direction of the heating coil, a pressure sensor for detecting water pressure is arranged in the heating coil between every two adjacent check valves, the pressure sensor is electrically connected with the control circuit, a first stop valve is arranged on a connecting pipeline on one side of the water pump, which is connected with the water inlet, and a second stop valve and a bypass pipeline connected with tap water are arranged on a connecting pipeline on one side of the water pump, which is connected with the water return port.
4. The high-safety floor heating system of claim 3, characterized in that the heating coil comprises a plurality of coil units connected in series through pipe joints, at least part of the pipe joints are straight-through two-way joints, an inner hole of each two-way joint comprises threaded holes at two ends, a cylindrical sliding hole at one side close to the water return port and a locking hole conical at one side close to the water inlet, the large end of each locking hole is connected with the corresponding sliding hole, the check valve comprises a valve element and a sliding sleeve, the valve element is matched with the valve element in the corresponding locking hole and arranged in the opening of the corresponding sliding hole, supporting ribs radially extending and connected to the inner side wall of the corresponding sliding hole are arranged on the circumferential surface of the sliding sleeve, a positioning rod inserted in the corresponding sliding sleeve is arranged on the end surface of.
5. The high-safety floor heating system is characterized in that the positioning rod is in threaded connection with the sliding sleeve, a first water guide groove extending in the axial direction is formed in a conical surface on the outer side of the valve core, a second water guide groove extending in the axial direction to a junction with the locking hole is formed in the inner side wall of the sliding hole, an accommodating groove is formed in the large end of the valve core, the positioning rod is arranged on the bottom surface of the accommodating groove, one end of the reset pressure spring abuts against the sliding sleeve, the other end of the reset pressure spring abuts against the bottom surface of the accommodating groove, when the valve core abuts against the locking hole, the valve core is located at a cut-off position, and the first water guide groove and the second water; when the limiting disc is attached to the sliding sleeve, the valve core is located at a conducting position, and the first water guide groove and the second water guide groove are partially overlapped in the axial direction and are overlapped in the circumferential direction.
6. The high-safety floor heating system as claimed in claim 4, wherein a bypass connector is arranged on the circumferential surface of the two-way connector, a cover which is in sealing connection with the bypass connector is sleeved on the bypass connector, the pressure sensor comprises an elastic diaphragm arranged at an opening of the bypass connector, a convex ring which is pressed against the elastic diaphragm is arranged on the inner side of the cover, a guide rod which extends towards one side far away from the bypass connector is arranged in the center of the elastic diaphragm, a magnet is embedded in the guide rod, two reed pipes which are arranged at intervals along the axial direction of the guide rod are arranged on the cover, and when the elastic diaphragm deforms and the magnet is close to the first reed pipe, the control device displays a low-pressure; when the magnet is close to the second reed switch, the control device displays a high pressure signal.
7. The high-safety floor heating system as claimed in claim 6, wherein the sleeve cover comprises a cylindrical connecting section, one end of the connecting section is in threaded connection with the bypass connector, an integrated sealing cover is arranged at the other end of the connecting section, the convex ring is integrally arranged on the inner side wall of the connecting section, the end part of the guide rod provided with the magnet is slidably connected in the sealing cover, and the reed pipe is embedded in the side wall of the sealing cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910827817.9A CN110617544B (en) | 2019-09-03 | 2019-09-03 | High underfloor heating system of security |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910827817.9A CN110617544B (en) | 2019-09-03 | 2019-09-03 | High underfloor heating system of security |
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| CN110617544A true CN110617544A (en) | 2019-12-27 |
| CN110617544B CN110617544B (en) | 2020-09-29 |
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| CN201910827817.9A Expired - Fee Related CN110617544B (en) | 2019-09-03 | 2019-09-03 | High underfloor heating system of security |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189103A (en) * | 2020-01-13 | 2020-05-22 | 欧贝多物联科技(嵊州)有限公司 | Intelligent bypass valve device |
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| CN101846356A (en) * | 2010-06-03 | 2010-09-29 | 太仓市海建塑料制品厂 | Electric heating type dry method module |
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