CN203797785U - Linkage system of heating machine room with high-temperature ground source heat pump unit - Google Patents
Linkage system of heating machine room with high-temperature ground source heat pump unit Download PDFInfo
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- CN203797785U CN203797785U CN201420214893.5U CN201420214893U CN203797785U CN 203797785 U CN203797785 U CN 203797785U CN 201420214893 U CN201420214893 U CN 201420214893U CN 203797785 U CN203797785 U CN 203797785U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 230000003020 moisturizing effect Effects 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 206010069729 Collateral circulation Diseases 0.000 abstract 2
- 239000008400 supply water Substances 0.000 description 16
- 230000009183 running Effects 0.000 description 11
- 230000002706 hydrostatic effect Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model discloses a linkage system of a heating machine room with a high-temperature ground source heat pump unit. The linkage system comprises a plurality of heat pump main bodies, outdoor buried pipes, a ground source collateral circulation pump unit, a high expansion tank, a water storage tank, a water supply tank, a water supply pump unit, a constant-pressure expansion tank and a heating network circulation pump unit. The heat pump main bodies are parallelly connected with one another and respectively parallelly connected with an outer net water supply pipe. The outdoor buried pipes are respectively parallelly connected with the heat pump main bodies through a heat pump inlet pipe and a heat pump outlet pipe. The ground source collateral circulation pump unit is arranged on the heat pump inlet pipe. A high water level sensor and a low water level sensor are arranged on the wall of the high expansion tank. A fluid level indicator and the other low sensor are arranged on the wall of the water storage tank. A water supply pipe is connected with the bottom of the water supply tank. The constant-pressure expansion tank is connected with an inlet end of the heating network circulation pump unit through a heating pipe. An outer net water return pipe is connected with the inlet end of the heating network circulation pump unit, and the heat pump main bodies are respectively parallelly connected with an outlet end of the heating network circulation pump unit through a user-side water return pipe.
Description
Technical field
The utility model relates to a kind of linked system of high temperature Heating by Ground Source Heat Pump machine room.
Background technology
Due to central heating or district heating area of heat-supply service large, thermic load is also very large, if use earth source heat pump unit to substitute original boiler heat source system, needs the heat pump main frame in parallel of larger amt, and supporting relevant machine room auxiliary device, as water pump, constant pressure supply water facility etc.The machine room linkage technique that existing use high temperature earth source heat pump carries out extensive central heating does not also have ready-made experience, but the central heating land used source heat pump machine room of an operational excellence should have following feature:
1) meet user's room temperature yield criterion, between heating period, need to meet accurate 18 ℃ of China's civil buildings design office temperature scale;
2) fixed pressure operation of heating system, if due to heating system variable-pressure operation, is surpassing on static pressure line in limited time, can cause system overpressure, bottom radiator is broken, under lower than static pressure line, prescribe a time limit, can cause system depletion top layer radiator turned letter, affect heating effect;
3) heating according to need, because user's thermic load constantly changes, needs the heat that thermal source provides also to require to change, otherwise overheated window or underheat is worn the clothes and all do not met the service requirement of central heating;
4) higher water is carried coefficient, and the heat that unit pump power is carried is got over Gao Yuegao, and water pump is got over power saving;
5) continuous heat supply and gap adjustment operation can move continuously under temperature outside design, gap operation when warm outside higher than design;
6) can automatic checkout system parameter, automatic recognition system parameter, automatic alarm, heating system is the system of a relative complex, hydraulic regime and heating power working conditions change complexity, particularly the earth source heat pump host computer system of many parallel runnings, hydraulic regime is more complicated.
Therefore a computer supervisory control system being based upon on manual adjustment basis has great significance to the safe operation of earth source heat pump central heating and energy-saving run.
Utility model content
The purpose of this utility model is to overcome the defect of prior art and linked system that a kind of high temperature Heating by Ground Source Heat Pump machine room is provided, it can carry out to operational outfit the monitoring of hydraulic regime and heating power operating mode, and automatically control affecting the equipment of system safety operation, on affecting the equipment of system energy efficiency operation, supervise and be aided with the means of labor management.
The purpose of this utility model is achieved in that a kind of linked system of high temperature Heating by Ground Source Heat Pump machine room, comprise many heat pump main frames in parallel, outside ground, source circulating pump group, high expansion water box, catch basin, moisturizing groove, small pump group, level pressure expansion drum and heating network circulating pump group, wherein
Described heat pump main frame is in parallel with outer net feed pipe;
It is in parallel with described heat pump main frame that described outside ground goes out pipe by a heat pump inlet pipe and heat pump, and described ground source circulating pump group is set on described heat pump inlet pipe;
The tank wall of described high expansion water box is provided with high and low level sensor, and the water inlet pipe of this high expansion water box is connected with one end of a filler pipe, and this filler pipe is connected with the entrance point of described ground source circulating pump group by a check-valves; The bottom of this high expansion water box connects an expansion tube, and this expansion tube is also connected with the entrance point of described ground source circulating pump group by a check valve;
The tank wall of described catch basin is provided with fluid level indicator and low sensors, on the bottom tank wall of this catch basin, connect a supercharging water pipe, this supercharging water pipe is connected with one end of described filler pipe with check valve by a booster pump, on this catch basin, also connect an adjutage being connected with the port of export of described ground source circulating pump group, the check valve that discharges water is set on this adjutage;
The bottom of described moisturizing groove connects a filling pipe, on this filling pipe, by described small pump group, is connected with described level pressure expansion drum, also connects a tapping pipe on this moisturizing groove, and this tapping pipe is connected with described level pressure expansion drum by a drain valve;
Described level pressure expansion drum is connected with the entrance point of described heating network circulating pump group by a heating tube;
The entrance point of described heating network circulating pump group connects outer net return pipe, and the port of export of this heating network circulating pump group is in parallel with described heat pump main frame by user's side return pipe.
The linked system of above-mentioned high temperature Heating by Ground Source Heat Pump machine room, wherein, the entrance point of described heating network circulating pump group connects described outer net return pipe by a dirt separator, a by pass filter also in parallel in this heating network circulating pump group.
The linked system of above-mentioned high temperature Heating by Ground Source Heat Pump machine room, wherein, a safety valve also in parallel on described drain valve.
The linked system of above-mentioned high temperature Heating by Ground Source Heat Pump machine room, wherein, described catch basin is connected with municipal water supply pipe by a check valve, and described moisturizing groove is connected with municipal water supply pipe with check valve by a flow sensor.
The linked system of above-mentioned high temperature Heating by Ground Source Heat Pump machine room, wherein, also connects a bypass solenoid valve between described outer net feed pipe and outer net return pipe.
The linked system of above-mentioned high temperature Heating by Ground Source Heat Pump machine room, wherein, described outer net feed pipe, outer net return pipe, heat pump inlet pipe, heat pump go out on pipe, user's side return pipe a temperature sensor is set respectively, described outer net feed pipe, outer net return pipe, heat pump go out on pipe and heating tube a pressure sensor is set respectively, and described outer net feed pipe and heat pump inlet pipe arrange respectively a flow sensor.
The linked system of high temperature Heating by Ground Source Heat Pump machine room of the present utility model has following characteristics:
1. can automatically adjust the operation number of units of the high temperature earth source heat pump unit of many parallel runnings according to outer net house steward's return water temperature, and can be according to the automatic decision off-load or load the object of unit running time of every earth source heat pump, realize the function of operation continuously and gap adjust operation;
2. can be according to outdoor temperature, the return water temperature of automatically adjusting high temperature earth source heat pump according to outdoor temperature-water temperature operation curve prepared in advance or outdoor temperature-water temperature running section is set, and the matter that realizes heat supply running regulates;
3. can automatically adjust heating network static pressure according to the heating network static pressure line setting in advance, guarantee that heat supply running is fixed pressure operation, prevent that outer net equipment from breaking or high-rise radiator turned letter, affect heating effect;
4. can manually adjust frequency conversion amount or the water pump operation quantity of heating network water circulating pump according to heating network house steward's flow monitoring equipment, guarantee maximized water pump conveying coefficient, the amount that realizes heat supply running regulates;
5. the automatic constant pressure supply water system of management operating underground pipe high expansion water box, whether monitoring underground pipe has leakage;
6. can automatically preserve or print hydraulic regime parameter and the heating power duty parameter in heat supply running stage on the same day, as heating network for pressure of return water, static pressure change curve, circular flow and rate of water make-up, source for pressure of return water, circular flow, the supply and return water temperature change curve of heating network, outer temperature change curve, source supply and return water temperature change curve etc.;
7. can carry out anticipation timely and warning to affecting the hydraulic regime parameter of system or equipment safe operation, as heating network overpressure alarm, heating network variable-pressure operation warning, the too low warning of heating network flow, underground pipe overpressure alarm, the too low warning of underground pipe flow, water pump overload-alarm etc.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the linked system of high temperature Heating by Ground Source Heat Pump machine room of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, the linked system of a kind of high temperature Heating by Ground Source Heat Pump machine room of the present utility model, comprise high temperature earth source heat pump main frame 1, outside ground 7, source circulating pump group 2, high expansion water box 19, catch basin 16, moisturizing groove 14, small pump group 12, level pressure expansion drum 9 and heating network circulating pump group 4, wherein:
Heat pump main frame 1 is in parallel with outer net feed pipe, and this outer net feed pipe is provided with temperature sensor 25, pressure sensor 23 and flow sensor 24;
It is in parallel with heat pump main frame 1 that outside ground 7 goes out pipe by a heat pump inlet pipe and heat pump, and ground source circulating pump group 2 is set on heat pump inlet pipe; Heat pump inlet pipe is provided with temperature sensor 30 and flow sensor 32, and heat pump goes out pipe and is provided with temperature sensor 27 and pressure sensor 29;
The tank wall of high expansion water box 19 is provided with high and low level sensor 18,17, and the water inlet pipe of this high expansion water box 19 is connected with one end of a filler pipe, and this filler pipe is connected with the entrance point of ground source circulating pump group 2 by a check-valves; The bottom of this high expansion water box 19 connects an expansion tube, and this expansion tube is also connected with the entrance point of ground source circulating pump group 2 by a check valve;
The tank wall of catch basin 16 is provided with fluid level indicator and low sensors 20, this catch basin 16 is connected with municipal water supply pipe by a check valve, on the bottom tank wall of this catch basin 16, connect a supercharging water pipe, this supercharging water pipe is connected with one end of filler pipe with check valve by a booster pump 15, on this catch basin 16, also connect an adjutage being connected with the port of export of ground source circulating pump group 2, the check valve that discharges water is set on this adjutage;
Moisturizing groove 14 is connected with municipal water supply pipe with check valve by a flow sensor 13, the bottom of this moisturizing groove 14 connects a filling pipe, on this filling pipe, by small pump group 12, be connected with level pressure expansion drum 9, on this moisturizing groove 14, also connect a tapping pipe, this tapping pipe is connected with level pressure expansion drum 9 by a drain valve 10; A safety valve 11 also in parallel on drain valve 10;
Level pressure expansion drum 9 is connected with the entrance point of heating network circulating pump group 4 by a heating tube; This heating tube is provided with a pressure sensor 21;
The entrance point of heating network circulating pump group 4 connects outer net return pipe by a dirt separator 6, and the port of export of this heating network circulating pump group 4 is in parallel with heat pump main frame 1 by user's side return pipe, and pressure sensor 31 and temperature sensor 22 are set on outer net return pipe; One temperature sensor 26 is set on user's side return pipe; A by pass filter 8 also in parallel in this heating network circulating pump group 4;
Between outer net return pipe and outer net feed pipe, also connect a bypass solenoid valve 5.
The linked system of a kind of high temperature Heating by Ground Source Heat Pump machine room of the present utility model, its major function is as follows:
1. heat pump main frame 1 is many parallel runnings, and quantity in parallel from several to tens not etc., when quantity in parallel surpasses 12, can be divided into groups.As when the return water temperature control model, heat pump goes out heat supply return water temperature signal and the setting value of artificial input or the setting value comparison that outer temperature-temperature curve is set automatically that the temperature sensor 27 on pipe sends, and system is again according to determining to add off-load quantity and add off-load object the running time of every heat pump main frame or cohort.
2. heating power operating mode operational factor:
A. the temperature sensor on outer net feed pipe 25 gathers outer net supply water temperatures, and when outer net supply water temperature exceeds outer temperature-supply water temperature prepared in advance or predefined the highest supply water temperature, system will send warning signal, and need manually ascertain the reason;
B. the temperature sensor on outer net return pipe 22 gathers outer net return water temperature, and when outer net supply water temperature exceeds outer temperature-supply water temperature prepared in advance or predefined minimum supply water temperature, system will send warning signal, and need manually ascertain the reason;
C. the temperature sensor on user's side return pipe 26 gathers user's side return water temperature of source pump, and system is according to this signal and according to the start and stop of the heat pump main frame 1 of outer temperature-return water temperature curve prepared in advance or the artificial return water temperature control parallel running of setting;
D. outdoor thermometer 28 gathers outdoor temperature, and system, according to outdoor temperature signal and the predefined outdoor temperature-return water temperature curve accepted, is judged the start and stop of heat pump main frame 1 automatically;
E. the temperature sensor on heat pump inlet pipe 30 gathers the temperature that heat source side is entered source pump;
F. underground pipe temperature sensor 33～36 gathers the differently soil moisture of pipe laying depth;
G. the temperature sensor 27 collection source pump that heat pump goes out on pipe are entered heat source side temperature, and system, according to the temperature of the congealing point of the artificial heat source side circulation fluid of setting, is sent antifreeze early warning signal.
3. hydraulic regime operational factor:
A. the hydrostatic pressure of the 21 acquiring heat supply pipe networks of the pressure sensor on heating tube, system is according to the allowed band of predefined heating network hydrostatic pressure, small pump group 12 to drain valve 10 and hot water pipe net manages, be that the hydrostatic pressure of heating network is while being greater than setting value+upper deviation, drain valve 10 is opened, until the hydrostatic pressure of heating network is closed while equaling to set value, while being less than setting value-deviation as the hydrostatic pressure of heating network, small pump group 12 starts, until the hydrostatic pressure of heating network equals setting value, closes;
B. the pressure sensor on outer net feed pipe 23 gathers outer net pressure of supply water, and as the Flow-rate adjustment foundation of heating network circulating pump 4 or the adjusting foundation of bypass motor-driven valve 5, when local outer net pressure of supply water surpasses setting pressure, system is sent the warning of outer net water supply superpressure;
C. the pressure sensor on outer net return pipe 31 gathers outer net pressure of return waters, and as the frequency conversion foundation of heating network circulating pump group 4, and when outer net pressure of return water is during lower than setting pressure, system is sent outer net backwater low pressure and warned; And the difference of the hydrostatic pressure of outer net pressure of return water and heating network is using the cleaning foundation as dirt separator 6, and system can be sent dirt separator 6 and clean alerting signal;
D. heat pump goes out locality pipe laying pressure of supply water of pressure sensor 29 on pipe, and as underground pipe superpressure warning foundation, when underground pipe pressure of supply water surpasses setting pressure, system is sent the warning of underground pipe superpressure;
E. 24 acquiring heat supply pipe network circular flows of the flow sensor on outer net feed pipe, Flow-rate adjustment foundation as heating network circulating pump group 4, and together with the supply and return water temperature that gathers with temperature sensor 25 on outer net feed pipe of the return water temperature gathering with temperature sensor 22 on outer net return pipe as the basis of heating load, system-computed is also described the Heating Period heating load change curve of Yi Wei unit;
F. the source circular flow locality of the flow sensor 32 on heat pump inlet pipe, and together with going out with heat pump the ground source supply water temperature that the temperature sensor 27 on pipe gathers as the adjusting foundation of ground source circulating pump group 2;
G. the flow sensor on moisturizing groove 14 13 gathers refill flow, as the outer net foundation of leaking, the same day integrated flow be greater than setting day allow moisturizing value time, system is sent the outer net warning of leaking;
H. when using high expansion water box 19 as underground pipe constant pressure supply water system, utilize high liquid level sensor 18 on high expansion water box 19 and low liquid level sensor 17 to control the keying of booster pumps 15, when the liquid level in high expansion water box 19 is lower than low liquid level sensor 17, system starts booster pump 15 liquid of catch basin 16 or ethylene glycol liquid-accumulating trough is pumped into high expansion water box 19, until the high liquid level sensor 18 of submergence, stop booster pump 15, guarantee that the fixed pressure operation of underground pipe system is normal;
I. when using catch basin 16 as the catch basin of high expansion water box 19 or ethylene glycol liquid-accumulating trough, the maximum swelling amount of pressing underground pipe system as catch basin 16 designs, low sensors 20 on catch basin 16 is served as the effect that underground pipe leaks warning sensor, when the liquid level of catch basin 16 is during lower than the installation site of low sensors 20, system can be sent the alarm signal that underground pipe leaks.
4. system is sent all kinds of alarm signals relevant with safe operation:
A. system can be sent the warning of outer net superpressure, outer net variable-pressure operation warning, the too high warning of underground pipe operating pressure, underground pipe leakage warning, outer net leakage warning, the too high warning of outer net supply water temperature, the too low warning of outer net return water temperature, the too low warning of heat source temperature, dirt separator obstruction warning etc.;
B. system can be sent the actuating signal of all kinds of executing agencies, as small pump group 12, booster pump 15, drain valve 10.
5. the bypass motor-driven valve 5 between outer net return pipe and outer net feed pipe, concrete aperture is by manual adjustment, and the pressure that the heating network flow gathering according to the flow sensor 24 on outer net feed pipe and pressure sensor 23 gather and the pressure that the pressure sensor on outer net return pipe 31 gathers obtain supplies backwater pressure reduction.
6. the function of other device:
A. the interior Preliminary pressure-filled of level pressure expansion drum 9 is heating network hydrostatic pressure lower limit, the highest operating pressure be safety valve 11 open pressure for 90% of high hydrostatic pressure;
B. in parallel by pass filter 8 in heating network circulating pump group 4, operating flux is metered flow 5%～10%.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (6)
1. the linked system of a high temperature Heating by Ground Source Heat Pump machine room, comprise many high temperature earth source heat pump main frames in parallel, outside ground, source circulating pump group, high expansion water box, catch basin, moisturizing groove, small pump group, level pressure expansion drum and heating network circulating pump group, it is characterized in that
Described heat pump main frame is in parallel with outer net feed pipe;
It is in parallel with described heat pump main frame that described outside ground goes out pipe by a heat pump inlet pipe and heat pump, and described ground source circulating pump group is set on described heat pump inlet pipe;
The tank wall of described high expansion water box is provided with high and low level sensor, and the water inlet pipe of this high expansion water box is connected with one end of a filler pipe, and this filler pipe is connected with the entrance point of described ground source circulating pump group by a check-valves; The bottom of this high expansion water box connects an expansion tube, and this expansion tube is also connected with the entrance point of described ground source circulating pump group by a check valve;
The tank wall of described catch basin is provided with fluid level indicator and low sensors, on the bottom tank wall of this catch basin, connect a supercharging water pipe, this supercharging water pipe is connected with one end of described filler pipe with check valve by a booster pump, on this catch basin, also connect an adjutage being connected with the port of export of described ground source circulating pump group, the check valve that discharges water is set on this adjutage;
The bottom of described moisturizing groove connects a filling pipe, on this filling pipe, by described small pump group, is connected with described level pressure expansion drum, also connects a tapping pipe on this moisturizing groove, and this tapping pipe is connected with described level pressure expansion drum by a drain valve;
Described level pressure expansion drum is connected with the entrance point of described heating network circulating pump group by a heating tube;
The entrance point of described heating network circulating pump group connects outer net return pipe, and the port of export of this heating network circulating pump group is in parallel with described heat pump main frame by user's side return pipe.
2. the linked system of high temperature Heating by Ground Source Heat Pump machine room according to claim 1, it is characterized in that, the entrance point of described heating network circulating pump group connects described outer net return pipe by a dirt separator, a by pass filter also in parallel in this heating network circulating pump group.
3. the linked system of high temperature Heating by Ground Source Heat Pump machine room according to claim 1, is characterized in that, a safety valve also in parallel on described drain valve.
4. the linked system of high temperature Heating by Ground Source Heat Pump machine room according to claim 1, is characterized in that, described catch basin is connected with municipal water supply pipe by a check valve, and described moisturizing groove is connected with municipal water supply pipe with check valve by a flow sensor.
5. the linked system of high temperature Heating by Ground Source Heat Pump machine room according to claim 1, is characterized in that, also connects a bypass solenoid valve between described outer net feed pipe and outer net return pipe.
6. the linked system of high temperature Heating by Ground Source Heat Pump machine room according to claim 1, it is characterized in that, described outer net feed pipe, outer net return pipe, heat pump inlet pipe, heat pump go out on pipe, user's side return pipe a temperature sensor is set respectively, described outer net feed pipe, outer net return pipe, heat pump go out on pipe and heating tube a pressure sensor is set respectively, and described outer net feed pipe and heat pump inlet pipe arrange respectively a flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214893.5U CN203797785U (en) | 2014-04-29 | 2014-04-29 | Linkage system of heating machine room with high-temperature ground source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420214893.5U CN203797785U (en) | 2014-04-29 | 2014-04-29 | Linkage system of heating machine room with high-temperature ground source heat pump unit |
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| Publication Number | Publication Date |
|---|---|
| CN203797785U true CN203797785U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420214893.5U Expired - Lifetime CN203797785U (en) | 2014-04-29 | 2014-04-29 | Linkage system of heating machine room with high-temperature ground source heat pump unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647680A (en) * | 2017-03-14 | 2017-05-10 | 挪信能源技术（上海）有限公司 | Remote monitoring system of multiple ground source heat pumps |
| CN109237583A (en) * | 2018-10-10 | 2019-01-18 | 浙江正理生能科技有限公司 | A kind of air source heat pump central heating system and control method |
| CN111609597A (en) * | 2019-02-22 | 2020-09-01 | 艾默生环境优化技术(苏州)有限公司 | Automatic water replenishing system and method for heat pump unit |
-
2014
- 2014-04-29 CN CN201420214893.5U patent/CN203797785U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647680A (en) * | 2017-03-14 | 2017-05-10 | 挪信能源技术（上海）有限公司 | Remote monitoring system of multiple ground source heat pumps |
| CN109237583A (en) * | 2018-10-10 | 2019-01-18 | 浙江正理生能科技有限公司 | A kind of air source heat pump central heating system and control method |
| CN111609597A (en) * | 2019-02-22 | 2020-09-01 | 艾默生环境优化技术(苏州)有限公司 | Automatic water replenishing system and method for heat pump unit |
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