GB2547133A - Thermostatically controlled water pump assembly - Google Patents
Thermostatically controlled water pump assembly Download PDFInfo
- Publication number
- GB2547133A GB2547133A GB1705752.2A GB201705752A GB2547133A GB 2547133 A GB2547133 A GB 2547133A GB 201705752 A GB201705752 A GB 201705752A GB 2547133 A GB2547133 A GB 2547133A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- heating system
- temperature
- hot water
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 254
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 230000004913 activation Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000009849 deactivation Effects 0.000 claims description 15
- 230000000007 visual effect Effects 0.000 claims description 7
- 230000037361 pathway Effects 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/105—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system pumps combined with multiple way valves
-
- 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
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
- F24D3/1066—Distributors for heating liquids
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
Abstract
The assembly 10 comprises: a thermostat 36; hot water inlet 12 to receive hot water from a space heating system; return water inlet 14 to receive return water from the underfloor heating system (15, figure 4); mixing valve 16 to blend the received hot water and return water to provide mixed water; return water outlet 28 to return a portion of the received hot water to the space heating system; pump 24 to receive the mixed water; and an assembly water outlet 26 to receive the mixed water from the pump and supply the same to the underfloor system. The thermostat includes a controller 38, ideally a dial, and a temperature sensor 34 positioned to measure the temperature of hot water received at the hot water inlet. The thermostat activates the pump when hot water received from the space heating system reaches a pre-set activation temperature. The pre-set activation temperature is user adjustable, ideally by rotating the dial. The dial may include a test setting that operates the pump irrespective of the temperature measured by the sensor to permit testing of the pump immediately after commissioning. A combined water heating system and method are also claimed.
Description
Thermostatically controlled water pump assembly
This invention relates to a thermostatically controlled water pump assembly for underfloor heating systems, a combined water heating system including a thermostatically controlled water pump assembly, and a method of providing a supply of water to an underfloor heating system.
Underfloor heating (UFH) systems are used to control the temperature of small rooms such as conservatories and the like. UFH systems typically comprise a plurality of pipe runs, hereinafter referred to underfloor heating loops, which are embedded in the floor of a room. The underfloor heating loops are filled with hot fluid, typically water, such that as the hot fluid flows through the underfloor heating loops, the heat dissipates through the floor and into the room. It is important for the underfloor heating loops to be maintained at a constant and uniform temperature. UFH systems typically operate at much lower temperatures than radiators and therefore are not directly compatible for use on the same system. However, temperature controlled pump assemblies may be used to integrate underfloor heating systems with a heated water source, such as a boiler or radiator. Known temperature controlled pump assemblies comprise a hot water inlet connected to the hot water source, and a cold water inlet. The hot and cold water streams are mixed in a mixing valve to produce a warm water flow. The warm water flow has a temperature lower than that of the hot water inlet and is ideally compatible for use in an underfloor heating system. A water pump may then pump the warm water through the underfloor heating loops. The water pump is typically activated and deactivated (ie. switched on and off) by a bimetallic strip-type thermostat, such that if the water temperature in the hot water inlet exceeds a first value, hereinafter referred to as the ‘activation temperature’, the water pump will be activated. This is caused by expansion of the bimetallic strip which physically causes a circuit to be made at the activation temperature. The pump is then deactivated when the bimetallic strip contracts due to a drop in temperature, thereby breaching the circuit. The temperature at which this occurs is the ‘deactivation temperature’. The deactivation temperature is lower than the activation temperature, and the difference in these temperatures is indicative of the hysteresis of the bimetallic strip.
Bimetallic strip switches typically have a tolerance of ±5 °C and a hysteresis of approximately 11 °C. The hysteresis and activation and deactivation temperatures are dependent upon the configuration and composition of the bimetallic strip, and cannot be modified or adjusted after manufacture. It would be highly desirable for the temperature at which the water pump was activated and deactivated to be set by the end user. It will be apparent that this level of control over the operation of the pump is impossible with bimetallic strip. It is also noted that a hysteresis of 11 °C is significant, giving rise to a significant difference between the activation and deactivation temperatures. This can give rise to a significant time lag between an actual cooling of the hot water stream and its detection by the bimetallic strip.
Known thermostatically controlled water pump assemblies are currently only operational when fully installed, when connected to a heated water source, and when the water in the inlet has exceeded the activation temperature. The pump assembly cannot be tested for faults until this time. It therefore may not be possible to test the pump assembly immediately after installation. Furthermore, it is not possible to test the operation of the water pump for servicing or maintenance work unless the heating system has exceeded the activation temperature. It would be desirable to test the operation of the pump assembly without the need to wait for the water in the inlet to exceed the activation temperature.
According to a first aspect of the invention there is a thermostatically controlled water pump assembly for an underfloor heating system comprising: a water conducting arrangement comprising a hot water inlet connectable to receive a supply of hot water from a hot water heating system, a return water inlet connectable to receive a supply of return water from the underfloor heating system, a mixing valve for mixing the supply of hot water with the supply of return water to provide a supply of mixed water, the water conducting arrangement further comprising a return water outlet connectable to a water return portion of the hot water heating system and in water conducting connection with the return water inlet; a water pump connected to the mixing valve to receive the supply of mixed water; an assembly water outlet connectable to the underfloor heating system and connected to receive water leaving the water pump; and a thermostat comprising a temperature sensor positioned to measure the temperature of the supply of hot water received via the hot water inlet, and a controller; wherein the temperature sensor is configured to provide temperature measurement across a range of temperatures and the controller is configured to activate the water pump when the temperature measured by the temperature sensor reaches a pre-set activation temperature, wherein the pre-set activation temperature is user-adjustable.
The supply of hot water may be from a hot water heating system, such as from a radiator or boiler. The mixing valve may be operable to adjust the ratio of the supply of hot water and the supply of return water mixed by the mixing valve. The temperature of the mixed water may be adjustably set at a temperature between about 25 °C to 60 °C. The activation temperature may be pre-set using any convenient means, such as a control knob. The water conducting arrangement may further comprise an isolating valve operable to close the hot water inlet. The water conducting arrangement may further comprise an isolating valve operable to close the return water outlet.
The temperature sensor may be an electronic temperature sensor providing an electronic output signal which is related to the measured temperature.
The temperature sensor may be a digital temperature sensor providing a digital output signal which is related to the measured temperature.
The controller may be configured to provide an optional operational mode which causes the water pump to be activated irrespective of the temperature measured by the temperature sensor.
The controller may be configured with a deactivation mode in which the water pump is deactivated when the temperature measured by the temperature sensor is less than a pre-set deactivation temperature.
The pre-set deactivation temperature may be the same as or less than the pre-set activation temperature.
The controller may be configured so that, for a pre-set period of time after the water pump is activated, the deactivation mode is disabled. The pre-set period of time may be up to 10 minutes, or more preferably up to 5 minutes.
The temperature sensor may be configured to provide temperature measurement across a temperature range of 30 to 55 °C.
The water conducting arrangement may comprise a first section connected to the mixing valve, the first section comprising the hot water inlet and defining a first water conducting pathway that connects the hot water inlet with the mixing valve, and wherein the temperature sensor is positioned to measure the temperature of the supply of hot water in the first water conducting pathway.
The first section may comprise a side arm in which the temperature sensor is positioned. The first section may further comprise an isolating valve operable to close the hot water inlet.
The water conducting arrangement may comprise a second section connected to the mixing valve, wherein the second section comprises the return water inlet and the return water outlet and defines at least one second water conducting pathway that connects the return water inlet with both of the return water outlet and the mixing valve. The second section may further comprise an isolating valve operable to close the return water outlet.
According to a second aspect of the invention there is a combined water heating system comprising: a hot water heating system; an underfloor heating system; and a thermostatically controlled water pump assembly according to the first aspect of the invention; in which the hot water inlet is connected to receive a supply of hot water from a hot water heating system, the assembly water outlet is connected to an inlet of the underfloor heating system, the return water inlet is connected to a return water line of the underfloor heating system, and the return water outlet is connected to a return water line of the hot water heating system.
The hot water heating system may be a system that heats one or more radiators.
According to a third aspect of the invention there is a method of providing a supply of water to an underfloor heating system comprising: providing a thermostatically controlled water pump assembly according to the first aspect of the invention in which the hot water inlet is connected to receive a supply of hot water from a hot water heating system, the assembly water outlet is connected to an inlet of the underfloor heating system, the return water inlet is connected to a return water line of the underfloor heating system, and the return water outlet is connected to a return water line of the hot water heating system; and activating the water pump when the temperature measured by the temperature sensor reaches a pre-set activation temperature.
Prior to the step of activating the water pump, the pre-set activation temperature may be set by a user.
The pump assembly may comprise a visual indicator which provides a visual indication when the water pump is activated. The visual indicator may be any convenient type, such as a light emitting diode (LED).
Embodiments of the apparatus in accordance with the present invention will now be described, by way of example only, and with reference to the accompanying drawings, in which:
Figure 1 is a schematic representation of an assembly of the first embodiment of the invention.
Figure 2 is a perspective view of an assembly of the first embodiment of the invention.
Figure 3 is a schematic representation of a thermostat included in the first embodiment of the invention.
Figure 4 is a graphical representation of a combined water heating system including a hot water heating system, a pump assembly of the first embodiment of the invention and an underfloor heating system.
Figures 1 and 2 show a first embodiment of a thermostatically controlled water pump assembly 10 for an underfloor heating system. The assembly 10 comprises a hot water inlet 12 and a return water inlet 14. The hot water inlet 12 may be connected to a hot water heating system, such as a radiator 13 or a boiler (not shown). In use, the hot water inlet 12 receives a hot supply of water into the assembly 10. The return water inlet 14 may be connected to underfloor heating loops 15 and receives a supply of return water into the assembly. The return water inlet 14 may be a return feed from underfloor heating loops 15.
The hot water introduced via the hot water inlet 12 and the return water introduced via the return water inlet 14 are mixed in a mixing valve 16. The mixing valve 16 comprises a mixing chamber 18. The ratio of hot water and return water entering the mixing chamber 18 may be adjusted using the control knob 20. The mixed water exits the mixing chamber via conduit 22. The mixed water has a lower temperature than the hot water entering the hot water inlet 12 but a higher temperature than the return water entering the return water inlet 14, the temperature of the mixed water being set by adjustment of the control knob 20. The temperature of the mixed water may be adjustably set at a temperature between about 25 °C to 60 °C.
The conduit 22 is connected to a water pump 24. The water pump 24 connects to an assembly water outlet 26. The assembly water outlet 26 may be connected to one or more underfloor heating loops 15, for example, via a flow manifold (not shown). The return feed from the one or more underfloor heating loops may be connected to the return water inlet 14. The water received by the return water inlet 14 may be directed in part towards the mixing valve 16 and in part towards a return water outlet 28. The return water outlet 28 may return the water to the hot water heating system. The efficiency of the pump assembly is improved by connecting the return feed from the underfloor heating loops to the return water inlet 14 and directing this flow in part back through the mixing valve 16.
The assembly 10 may be isolated from the hot water heating system using isolating valves 30 and 32. In the first embodiment the isolating valve 30 is disposed proximal to the hot water inlet 12, and the isolating valve 32 is disposed proximal to the return water outlet 28. The isolating valve 30 is operable to prevent water from entering the pump assembly 10 via the first inlet 12. The isolating valve 32 is operable to prevent water returning to the hot water heating system. The isolating valves 30 and 32 may independently be any convenient type, such as a ball valve, stopcock valve, or gate valve. The isolating valves 30 and 32 are made from scale resistant materials to provide a long lifespan without seizing up.
The temperature of water entering the hot water inlet 12 is measured by a temperature sensor 34. The temperature sensor 34 may have a tolerance of approximately ±1-2 °C. The temperature sensor 34 may be an electronic temperature sensor, such as a digital temperature sensor. In the embodiment shown in Figures 1 to 3, the temperature sensor 34 is disposed in the conduit 31, between hot water inlet 12 and the mixing valve 16. The temperature sensor 34 is part of a thermostat 36. If the temperature measured by the temperature sensor 34 reaches or exceeds a first designated value, referred to as the ‘activation temperature’, the water pump 24 is switched on or activated. Conversely, if the temperature measured by the temperature sensor 34 falls below a second designated value, referred to as the ‘deactivation temperature’, the water pump 24 is switched off or deactivated. The deactivation temperature may be the same as or less than the activation temperature value by up to 11 °C or, more preferably, 4-6 °C. The hysteresis in the system can help prevent the pump 24 being switched on and off in quick succession, a problem known as “pump hunting”. The thermostat may also be programmed to disregard quick temperature fluctuations, for example temperature drifts of less than five minutes, in order to prevent pump hunting. In one embodiment the thermostat 36 is configured so that after the water pump 24 is activated, the water pump 24 remains activated for at least a pre-set period of time irrespective of the temperature measured by the temperature sensor 34. In one embodiment the water pump 24 is only deactivated after the temperature measured by the temperature sensor 34 is consistently less than the deactivation temperature for a pre-set period of time.
The activation temperature, that is the designated value at which the water pump 24 is activated, is determined by the end user, and may be adjusted via a controller 38. This gives the user of the product improved control over the conditions and temperature that the water pump 24 is activated with regards to known designs. In one embodiment, the activation temperature may be adjusted from between 30 °C and 55 °C.
The thermostat 36 may also comprise visual indicator 40, such as LED. The visual indicator 40 may indicate when the water temperature in the inlet conduit 31 has reached or exceeded the activation temperature or when the water pump 24 is activated.
In the embodiment shown in Figure 1 the thermostat 36 has an override mode, which may be activated by adjusting the control dial 38 into the override or test position 42. The override mode is characterised in that the water pump 24 is permanently switched on irrespective of the temperature measured by the temperature sensor 34. The override mode may be beneficially used during installation of the assembly 10 to ensure that the water pump 24 is fully operational. Alternatively, the override mode may be used when servicing the pump assembly. The override mode may be used in circumstances where the water in the system is not heated or alternatively if no water is present in the system. This negates the need to connect the assembly 10 to a hot water heating system in order to test the pump 24. Therefore any potential faults in the commissioning of the assembly 10 may be noticed sooner, without the need to wait for the system to reach the required temperature. Additionally, this means that the pump assembly may be serviced conveniently at any time, without the inconvenience of waiting for the water in the system to reach the required temperature.
The assembly may be fixed to a wall bracket to allow attachment to a wall for convenient installation.
The pump assembly 10 may be part of a combined water heating system shown generally in Figure 4. The pump assembly 10 allows the integration of a hot water heating system, such as a radiator 13, and an underfloor heating system 15.
Claims (17)
1. A thermostatically controlled water pump assembly for an underfloor heating system comprising: a water conducting arrangement comprising a hot water inlet connectable to receive a supply of hot water from a hot water heating system, a return water inlet connectable to receive a supply of return water from the underfloor heating system, a mixing valve for mixing the supply of hot water with the supply of return water to provide a supply of mixed water, the water conducting arrangement further comprising a return water outlet connectable to a water return portion of the hot water heating system and in water conducting connection with the return water inlet; a water pump connected to the mixing valve to receive the supply of mixed water; an assembly water outlet connectable to the underfloor heating system and connected to receive water leaving the water pump; and a thermostat comprising a temperature sensor positioned to measure the temperature of the supply of hot water received via the hot water inlet and a controller; wherein the temperature sensor is configured to provide temperature measurement across a range of temperatures and the controller is configured to activate the water pump when the temperature measured by the temperature sensor reaches a pre-set activation temperature, wherein the pre-set activation temperature is user-adjustable.
2. The pump assembly according to claim 1 in which the temperature sensor is an electronic temperature sensor providing an electronic output signal which is related to the measured temperature.
3. The pump assembly according to claim 1 or claim 2 in which the temperature sensor is a digital temperature sensor providing a digital output signal which is related to the measured temperature.
4. The pump assembly according to any one of claims 1 to 3 in which the controller is configured to provide an optional operational mode which causes the water pump to be activated irrespective of the temperature measured by the temperature sensor.
5. The pump assembly according to any previous claim in which the controller is configured with a deactivation mode in which the water pump is deactivated when the temperature measured by the temperature sensor is less than a pre-set deactivation temperature.
6. The pump assembly according to claim 5 in which the pre-set deactivation temperature is the same as or less than the pre-set activation temperature.
7. The pump assembly according to claim 5 or claim 6 in which the controller is configured so that, for a pre-set period of time after the water pump is activated, the deactivation mode is disabled.
8. The pump assembly according to any previous claim in which the temperature sensor is configured to provide temperature measurement across a temperature range of 30 to 55 °C.
9. The pump assembly according to any previous claim in which the water conducting arrangement comprises a first section connected to the mixing valve, the first section comprising the hot water inlet and defining a first water conducting pathway that connects the hot water inlet with the mixing valve, and wherein the temperature sensor is positioned to measure the temperature of the supply of hot water in the first water conducting pathway.
10. The pump assembly according to claim 9 in which the first section comprises a side arm in which the temperature sensor is positioned.
11. The pump assembly according to claim 9 or claim 10 in which the water conducting arrangement comprises a second section connected to the mixing valve, wherein the second section comprises the return water inlet and the return water outlet and defines at least one second water conducting pathway that connects the return water inlet with both of the return water outlet and the mixing valve.
12. The pump assembly according to any previous claim comprising a visual indicator which provides a visual indication when the water pump is activated.
13. A combined water heating system comprising: a hot water heating system; an underfloor heating system; and a thermostatically controlled water pump assembly according to claim 1; in which the hot water inlet is connected to receive a supply of hot water from a hot water heating system, the assembly water outlet is connected to an inlet of the underfloor heating system, the return water inlet is connected to a return water line of the underfloor heating system, and the return water outlet is connected to a return water line of the hot water heating system.
14. The combined water heating system according to claim 13 in which the hot water heating system is a system that heats one or more radiators.
15. A method of providing a supply of water to an underfloor heating system comprising: providing a thermostatically controlled water pump assembly according to claim 1 in which the hot water inlet is connected to receive a supply of hot water from a hot water heating system, the assembly water outlet is connected to an inlet of the underfloor heating system, the return water inlet is connected to a return water line of the underfloor heating system, and the return water outlet is connected to a return water line of the hot water heating system; and activating the water pump when the temperature measured by the temperature sensor reaches a pre-set activation temperature.
16. The method according to claim 15 in which, prior to the step of activating the water pump, the pre-set activation temperature is set by a user.
17. A thermostatically controlled water pump assembly or combined water heating system substantially as described herein and/or with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1705752.2A GB2547133B (en) | 2017-04-10 | 2017-04-10 | Thermostatically controlled water pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1705752.2A GB2547133B (en) | 2017-04-10 | 2017-04-10 | Thermostatically controlled water pump assembly |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201705752D0 GB201705752D0 (en) | 2017-05-24 |
| GB2547133A true GB2547133A (en) | 2017-08-09 |
| GB2547133B GB2547133B (en) | 2018-03-21 |
Family
ID=58744673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1705752.2A Active GB2547133B (en) | 2017-04-10 | 2017-04-10 | Thermostatically controlled water pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2547133B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2727195A1 (en) * | 1994-11-21 | 1996-05-24 | Financ & Comm Chablais | Factory-made module for underfloor and radiator central heating |
| US5556027A (en) * | 1994-04-05 | 1996-09-17 | Fiedrich; Joachim | Hydronic heating outdoor temperature reset supply water temperature control system |
| DE29820945U1 (en) * | 1998-11-17 | 1999-04-22 | Schoettler Frank | Device for regulating the flow temperature (for hot water underfloor heating) for combined underfloor heating and radiator systems |
| CN203642300U (en) * | 2013-12-05 | 2014-06-11 | 佛山市日丰企业有限公司 | Floor heating water mixing device |
-
2017
- 2017-04-10 GB GB1705752.2A patent/GB2547133B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5556027A (en) * | 1994-04-05 | 1996-09-17 | Fiedrich; Joachim | Hydronic heating outdoor temperature reset supply water temperature control system |
| FR2727195A1 (en) * | 1994-11-21 | 1996-05-24 | Financ & Comm Chablais | Factory-made module for underfloor and radiator central heating |
| DE29820945U1 (en) * | 1998-11-17 | 1999-04-22 | Schoettler Frank | Device for regulating the flow temperature (for hot water underfloor heating) for combined underfloor heating and radiator systems |
| CN203642300U (en) * | 2013-12-05 | 2014-06-11 | 佛山市日丰企业有限公司 | Floor heating water mixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201705752D0 (en) | 2017-05-24 |
| GB2547133B (en) | 2018-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6062485A (en) | Radiant heating system reset control | |
| US5119988A (en) | Hydronic heating water temperature control system | |
| US5707007A (en) | Hydronic heating with continuous circulation supplying multi-temperature heating loops | |
| KR100905924B1 (en) | Device for control each temperature of warm circulation water of each room control system | |
| GB2452043A (en) | Radiator thermostatic control | |
| US20120312885A1 (en) | Variable rate heating for agricultural purposes | |
| US10316981B2 (en) | Heat pump water heater appliance and an electronic mixing valve | |
| KR101040692B1 (en) | Proportional Flow-rate Control System using Pressure Difference | |
| US20180274792A1 (en) | Water heater appliance with a flow meter | |
| US10082301B1 (en) | Water heater appliance with a cold water bypass | |
| US20240053060A1 (en) | A hydraulic unit | |
| US20080237362A1 (en) | Hot water supply system | |
| EP3564593A3 (en) | Thermostatic device and sanitary water supply and/or dispensing system comprising such a thermostatic device | |
| US11536490B2 (en) | Water heater appliances and methods of sabbath operation | |
| DK179725B1 (en) | Heating system | |
| GB2547133A (en) | Thermostatically controlled water pump assembly | |
| US6390381B1 (en) | Control unit and process for adjusting the heating loops in large area heating systems and to control the adjusted heating loops | |
| US9970681B2 (en) | Water heater appliance | |
| EP3021049A1 (en) | Heat interface unit | |
| US11347246B2 (en) | Water heater appliances and methods for controlling a mixing valve with a park period | |
| DK179855B1 (en) | Manifold for a heating system and a floor heating | |
| US3168243A (en) | Heating system | |
| JP3465587B2 (en) | Hot water heating system | |
| CN112272724A (en) | Safety valve and method for controlling a safety valve | |
| KR100945267B1 (en) | Heat Supply Method using Calibration Data |