CN211650419U - Complementary multifunctional adjusting heating system - Google Patents

Complementary multifunctional adjusting heating system Download PDF

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Publication number
CN211650419U
CN211650419U CN202020093187.5U CN202020093187U CN211650419U CN 211650419 U CN211650419 U CN 211650419U CN 202020093187 U CN202020093187 U CN 202020093187U CN 211650419 U CN211650419 U CN 211650419U
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CN
China
Prior art keywords
heat
component
pump
heat exchange
heat source
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Expired - Fee Related
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CN202020093187.5U
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Chinese (zh)
Inventor
郑清福
赵斌
郑祖华
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Tibet Huayang Heat Supply Engineering Service Co ltd
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Tibet Huayang Heat Supply Engineering Service Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

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Abstract

The utility model discloses a multi-functional heating system that adjusts of complementary formula, including the subassembly that prevents frostbite, first heat source component, the second heat source component, the heat accumulation subassembly, heat exchange assembly and cooling module, first heat source component links to each other with the heat accumulation subassembly, the heat accumulation subassembly passes through heat exchange assembly and links to each other with the user side, it has the second heat source component to connect in parallel between heat exchange assembly and the user side, first heat source component and second heat source component interchangeable heat, second heat source component links to each other with the user side, be connected with subassembly and cooling module that prevents frostbite on the first heat source component, be connected with softened water component on the heat accumulation subassembly, be provided with inflation level pressure subassembly in the system, inflation level pressure subassembly all links to each other with softened water component, heat accumulation subassembly and second heat source component all can provide the heat source to the user side alone, also can. The system stabilizes the pressure in each component through the expansion constant pressure component, adjusts the temperature of the system through the cooling component and the heat exchange component, and prevents the water solution from freezing through the anti-freezing component.

Description

Complementary multifunctional adjusting heating system
Technical Field
The utility model relates to a heating equipment especially relates to a multi-functional regulation heating system of complementary formula.
Background
On the grounds of Qinghai-Tibet plateau, the temperature difference between day and night is very large in winter, the temperature in the day is higher, the temperature at night is lower, and in order to enable the pipeline to supply heat uninterruptedly, each component connected in the system is required not to be frozen when supplying heat at night, the illumination is sufficient at noon, the water temperature can continuously rise, and pressure burden is brought to each component in the system due to expansion with heat and contraction with cold. Meanwhile, because the temperature changes continuously due to the alternation of day and night, the complementation exists between the underground heat source and the solar illumination, and the independent heat supply and the complementary heat supply coexist, so that the temperature in the system is in the dynamic change, the service life of pipelines and other devices can be influenced, and the pressure in the system needs to be stabilized. Meanwhile, under the condition of sufficient solar energy, the temperature in the system is already high, and only a cooling mode can be used under the condition, so that the waste of resources is completely caused, and the full utilization of the resources cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a complementary multi-functional regulation heating system to solve the not enough of correlation technique.
In order to solve the relevant problem, the utility model adopts the following technical scheme:
a complementary multifunctional adjusting heating system comprises an anti-freezing component, a first heat source component, a second heat source component, a heat storage component, a heat exchange component and a cooling component, wherein the first heat source component is connected with the heat storage component, the heat storage component is connected with a user side through the heat exchange component, the second heat source component is connected between the heat exchange component and the user side in parallel, the first heat source component and the second heat source component can exchange heat, the second heat source component is connected with the user side, the anti-freezing component and the cooling component are connected onto the first heat source component, and a softened water component is connected onto the heat storage component;
the pipeline between the first heat source component and the heat storage component, the pipeline between the heat exchange component and the second heat source component, the pipeline between the heat exchange component and the user side, and the pipeline between the second heat source component and the user side are all provided with expansion constant pressure components which are all connected with the softened water component;
the heat storage assembly and the second heat source assembly can independently provide heat sources for the user terminal and can also provide heat sources for the user simultaneously.
Further, the first heat source assembly comprises a flat plate type heat collector for receiving solar illumination and a heat collecting side plate type converter arranged in parallel.
Furthermore, the anti-freezing component comprises an anti-freezing liquid storage tank and an anti-freezing liquid pump which are connected in parallel, the anti-freezing liquid storage tank is arranged on the input end of the flat plate type heat collector and is connected with the output end of the flat plate type heat collector, and the anti-freezing liquid pump is arranged between the flat plate type heat collector and the heat collection side plate type converter.
Furthermore, the cooling assembly comprises an air cooler, an output end of the air cooler is connected with an input end of the flat plate type heat collector, and an input end of the air cooler is connected with an output end of the antifreezing liquid pump.
Further, the heat storage assembly comprises a heat storage water pump and a heat storage water tank, the heat storage water pump is arranged between the heat storage water tank and the heat collection side plate type converter, and the softened water assembly is connected with the heat storage water tank.
Further, heat exchange assembly includes first heat transfer pump, heat transfer board and second heat transfer pump, first heat transfer pump sets up hot water storage tank with between the heat transfer board, and set up hot water storage tank's output, the heat transfer board includes heat pump heat transfer board and terminal heat transfer board, terminal heat transfer board directly links to each other with the user, the heat pump heat transfer board passes through the second heat transfer pump links to each other with second heat source subassembly.
Further, the second heat source component comprises a high-temperature water source heat pump set, and the high-temperature water source heat pump set is arranged between the second heat exchange pump and the user side.
Further, the input of user side is provided with user heating water pump.
Furthermore, the input end of the user heating water pump, the input end of the second heat exchange pump and the input end of the antifreezing liquid pump are all connected with the expansion constant-pressure component.
Further, the expansion constant-pressure assembly comprises a constant-pressure pump, and the input end of the constant-pressure pump is connected with the softened water assembly.
The utility model discloses following beneficial effect has:
1) the three expansion constant-pressure components are added in the system, so that the pressure in the whole pipeline is stable, the whole system is not greatly influenced, each component in the whole system is protected, the service life of the system is effectively prolonged, and a water source is provided for the system under the condition that the system is lack of water.
2) Be provided with the subassembly that prevents frostbite in this system, prevent to lead to can not carrying the heat because the temperature is too low in the pipeline, simultaneously because the frozen increase volume of water for pipeline in the pipeline breaks, thereby makes heating system damage, so the increase of subassembly that prevents frostbite also can play protection device's effect.
3) The system is provided with a cooling assembly, and the aim is to prevent the water temperature from being too high when the system is in sufficient illumination, so that the pressure in each pipeline assembly is increased, and the components in the system are damaged.
4) The traditional water source heat pump has higher energy consumption, and the high-temperature water source heat pump has low energy consumption, and the combination with a solar system at the altitude of more than 4500 m can reach 0.76 through tests.
5) The detectors in the system can be remotely monitored, and the electric two-way valve can be remotely controlled, so that the energy consumption is ideal, the energy consumption cost is saved, and the manual maintenance cost is reduced.
6) The system can not only supply heat, but also provide hot water for users when the heat in the system is completely sufficient under the condition of sufficient solar energy, so that the cost of the users can be saved, the system and the resources can be fully utilized, and the expansion constant-pressure component can directly extract the water in the heat storage water tank to supplement the water used by the users.
Drawings
FIG. 1 is a schematic diagram of a first portion of a heating system;
FIG. 2 is a schematic diagram of a second portion of the heating system coupled to FIG. 1;
fig. 3 is a third partial configuration diagram of the heating system connected to fig. 2.
In the figure: 1-a softened water component; 2-expansion constant pressure assembly; 3-flat plate collector; 4-heat collecting side plate type converter; 5-frozen liquid storage tank; 6-antifreeze liquid pump; 7-an air cooler; 8-a heat storage water pump; 9-a heat storage water tank; 10-a first heat exchange pump; 11-a heat exchange plate; 12-a second heat exchange pump; 13-heat pump heat exchange plates; 14-end heat exchange plates; 15-a user terminal; 16-high temperature type water source heat pump group; 17-user heating water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the drawings illustrate: the solid line is a heat supply pipeline, and the dotted line is a water return pipeline. The terminal A of FIG. 1 is connected to the terminal A of FIG. 2; the terminal B of FIG. 1 is connected to the terminal A of FIG. 2; the terminal C of FIG. 2 is connected to the terminal C of FIG. 3; the D terminal of FIG. 2 is connected to the D terminal of FIG. 3; the E terminal of FIG. 2 is connected to the E terminal of FIG. 3; the F-terminal of fig. 2 is connected to the F-terminal of fig. 3. FH denotes an auxiliary heat source return pipe; FG denotes an auxiliary heat source water supply pipe; TH represents a heat collection side water return pipe; TG denotes a heat collecting side water supply pipe; LH denotes a cooling return pipe; LG denotes a cooling water supply pipe; SH denotes a heat storage side return pipe; SG denotes a heat storage side water supply pipe; RH represents a hot water return pipe; RG denotes a hot water supply pipe. T1-T6 each represents a temperature sensor; FM 1-FM 15 all represent electric two-way valves.
The utility model provides a complementary multi-functional regulation heating system, including subassembly that prevents frostbite, first heat source subassembly, second heat source subassembly, the heat accumulation subassembly, heat exchange assembly and cooling module, first heat source subassembly links to each other with the heat accumulation subassembly, the heat accumulation subassembly passes through heat exchange assembly and links to each other with the user, parallel connection has second heat source subassembly between heat exchange assembly and the user, first heat source subassembly and second heat source subassembly interchangeable heat, the second heat source subassembly links to each other with the user, be connected with subassembly and cooling module that prevents frostbite on the first heat source subassembly, be connected with demineralized water subassembly 1 on the heat accumulation subassembly. And the expansion constant-pressure component 2 is arranged on the pipeline between the first heat source component and the heat storage component, the pipeline between the heat exchange component and the second heat source component, the pipeline between the heat exchange component and the user side, and the pipeline between the second heat source component and the user side, and the expansion constant-pressure component 2 is connected with the softened water component 1. The heat storage component and the second heat source component can independently provide heat sources for the user side and can also provide heat sources for the user at the same time.
In some embodiments, the first heat source assembly comprises a flat plate collector 3 for receiving solar radiation and a collector side plate converter 4 arranged in parallel. The flat plate type heat collector 3 is connected with the heat collection side plate type converter 4 through a heat collection side water return pipe TH and a heat collection side water supply pipe TG, a temperature sensor T1 is further arranged in the first heat source assembly, the temperature sensor is arranged at the output end of the flat plate type heat collector 3, and the temperature sensor T1 is used for detecting the temperature connected to the flat plate type heat collector 3.
In some embodiments, the anti-freezing assembly comprises an anti-freezing liquid storage tank 5 and an anti-freezing liquid pump 6 connected in parallel, the anti-freezing liquid storage tank 5 is arranged on the input end of the flat plate type heat collector 3 and is connected with the output end of the flat plate type heat collector 3, the anti-freezing liquid pump 6 is arranged between the flat plate type heat collector 3 and the heat collecting side plate type converter 4, the anti-freezing assembly is arranged on a heat collecting side water supply pipe TG, two sides of the anti-freezing liquid pump 6 are connected through a flexible rubber joint, a pressure gauge is arranged in front of the flexible rubber joint at the inlet end of the anti-freezing liquid pump 6, a Y-shaped filter is arranged in front of the pressure gauge, the pressure gauge is arranged in front of the Y-shaped filter, the pressure gauge is arranged in rear of the flexible rubber joint at the outlet end of the anti-freezing liquid pump 6, a, and simultaneously filtering the liquid in the heat collecting side water supply pipe TG. The antifreeze is glycol, and the freezing point of the antifreeze is 3 ℃ lower than the local extreme lowest outdoor environment temperature. An antifreeze solution sampling port is arranged at the input end of the heat collection side water supply pipe TG to facilitate the specific gravity check of antifreeze solution in a heat supply system, so that the specific gravity of the antifreeze solution is in a certain range, and an electric two-way valve and a one-way liquid discharge valve are connected on a pipeline connected with the antifreeze solution storage tank 5, thereby facilitating the better control of the specific gravity of the antifreeze solution in the system. An electric two-way valve FM1 is additionally arranged between the heat collection side water return pipe TH and the heat collection side water supply pipe TG, and the anti-freezing condition of water supply and water return can be adjusted through the electric two-way valve FM 1. Be provided with the subassembly that prevents frostbite in this system, prevent to lead to can not carrying the heat because the temperature is too low in the pipeline, simultaneously because the frozen increase volume of water for pipeline in the pipeline breaks, thereby makes heating system damage, so the increase of subassembly that prevents frostbite also can play protection device's effect.
In some embodiments, the cooling module comprises an air cooler 7, the output of the air cooler 7 is connected to the input of the flat plate collector 3, and the input of the air cooler 7 is connected to the output of the antifreeze pump 6. Meanwhile, an electric two-way valve FM2 and an electric two-way valve FM3 are arranged on the cooling water return pipe LH and the cooling water supply pipe LG of the cooling component. When the temperature of T1 is higher than 100 ℃, the electric two-way valve FM1 and the electric two-way valve FM2 are closed, the electric two-way valve FM3 is opened, and the air cooler 7 operates to dissipate heat; when the temperature of T1 is less than or equal to 100 ℃, electric two-way valve FM2 and electric two-way valve FM3 are closed, electric two-way valve FM1 is opened, and air cooler 7 stops operating. A cooling module is provided in the system to prevent the water temperature from being too high when the system is illuminated sufficiently, causing pressure to build up in the respective pipe modules and damaging the components in the system, and the air cooler 7 will only operate when the water temperature in the system is too hot.
In some embodiments, the heat storage assembly comprises a heat storage water pump 8 and a heat storage water tank 9, the heat storage water pump 8 is arranged between the heat storage water tank 9 and the heat collection side plate type converter 4, and the softened water assembly 1 is connected with the heat storage water tank 9. A heat storage side water return pipe SH and a heat storage side water supply pipe SG are arranged between the heat storage water tank 9 and the heat collection side plate type converter 4, a heat storage water pump 8 is arranged on the heat storage side water return pipe SH, the outlet end of the heat storage side water return pipe SH is the heat collection side plate type converter 4, and the heat is exchanged through the heat collection side plate type converter 4 and enters the heat storage water tank 9 through the heat storage side water supply pipe SG. Therefore, the low-temperature water in the system can be changed into high-temperature water, and heat can be continuously provided for a user.
In some embodiments, the heat exchange assembly comprises a first heat exchange pump 10, a heat exchange plate 11 and a second heat exchange pump 12, the first heat exchange pump 10 is disposed between the hot water storage tank 9 and the heat exchange plate 11 and disposed at an output end of the hot water storage tank 9, the heat exchange plate 11 comprises a heat pump heat exchange plate 13 and an end heat exchange plate 14, the end heat exchange plate 14 is directly connected to a user end 15, and the heat pump heat exchange plate 13 is connected to the second heat source assembly through the second heat exchange pump 12. A hot water return pipe RH and a hot water supply pipe RG are arranged at the heat storage water tank 9 and the user terminal 15, a first heat exchange pump 10 is arranged on the hot water return pipe RH, a second heat exchange pump 12 is arranged on the hot water supply pipe RG, and heat exchange plates 11 are arranged on the hot water return pipe RH and the hot water supply pipe RG in parallel, wherein an electric two-way valve FM4 and an electric two-way valve FM5 are arranged on the heat storage side of a heat pump heat exchange plate 13, and an electric two-way valve FM6 and an electric two-way valve FM7 are arranged on the heat storage side of a tail end heat exchange plate 14 to control the heat exchange condition between the heat exchange.
In some embodiments, the second heat source component includes a high temperature type water source heat pump set 16, the high temperature type water source heat pump set 16 is disposed between the second heat exchange pump 12 and the user terminal 15, and the high temperature type water source heat pump set 16 can rapidly raise the water temperature to 72 ℃. The input at the user side is provided with user heating water pump 17, and user heating water pump 17 can give the user heat transfer. An auxiliary heat source water return pipe FH and an auxiliary heat source water supply pipe FG are connected between the temperature type water source heat pump group 16 and the user terminal 15, an electric two-way valve FM12 and an electric two-way valve FM13 are arranged between the high temperature type water source heat pump group 16 and the heat pump heat exchange plate 13, an electric two-way valve FM9 and an electric two-way valve FM11 are arranged between the high temperature type water source heat pump group 16 and the user terminal 15, and an electric two-way valve FM8 and an electric two-way valve FM10 are arranged between the tail end heat exchange plate 14 and the user terminal 15, so that the connection and disconnection of the 6 electric two-way valves can be controlled, the condition that the heat storage water tank 9 and the high temperature type water source heat pump group 16 supply heat to the user terminal 15 is controlled, the heat storage water tank 9 and the high temperature. Finally, the heating temperature of the user terminal 15 reaches 72 ℃, the return water temperature is 67 ℃, and only such temperature can ensure that the indoor temperature of the user terminal 15 reaches 18 ℃ and the temperature is in a stable state.
In some embodiments, the input of the user heating water pump 17, the input of the second heat exchange pump 12, and the input of the antifreeze pump 6 are connected to the expansion constant pressure assembly 2. The expansion constant pressure assembly 2 comprises a constant pressure pump, the input end of the constant pressure pump is connected with the softened water assembly 1, and under the condition of water shortage in the system, a water tank in the expansion constant pressure assembly 2 provides water source for the system. The expansion constant pressure module 2 is provided on the cooling water supply pipe LG and the hot water supply pipe RG, respectively. The three expansion constant-pressure components 2 are added in the system, so that the pressure in the whole pipeline is stable, the whole system is not greatly influenced, the protection of each component in the whole system is facilitated, and the service life of the system is effectively prolonged.
In some embodiments, the user terminal 15 is provided with a water intake switch, and the system can not only supply heat, but also supply hot water to the user when the heat is sufficient enough under the condition that the solar energy is sufficient, so that the cost can be saved for the user, and meanwhile, the system can be fully utilized. Under the condition of water supply, the expansion constant-pressure component 2 can directly extract water in the heat storage water tank 9 to supplement water used by a user, and the water can be used by the user after being heated by the high-temperature water source heat pump group 16.
In some embodiments, multiple components in the system are arranged in parallel, wherein one group is in a use state, and the other group is in a standby state, and when the component of the group in use fails, the component of the standby group is immediately activated, so that the system is not in a shutdown state.
The traditional water source heat pump has higher energy consumption, and the high-temperature water source heat pump group 16 has low energy consumption, and the combination with a solar system at the altitude of more than 4500 m can reach 0.76 through tests. The detectors in the system can be remotely monitored, and all the electric two-way valves can be remotely controlled, so that the energy consumption is idealized, the energy consumption cost is saved, and the manual maintenance cost is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (10)

1. The utility model provides a multi-functional regulation heating system of complementary formula which characterized in that: the system comprises an anti-freezing component, a first heat source component, a second heat source component, a heat storage component, a heat exchange component and a cooling component, wherein the first heat source component is connected with the heat storage component, the heat storage component is connected with a user side through the heat exchange component, the second heat source component is connected between the heat exchange component and the user side in parallel, the first heat source component and the second heat source component can exchange heat, the second heat source component is connected with the user side, the anti-freezing component and the cooling component are connected onto the first heat source component, and a softened water component (1) is connected onto the heat storage component;
the pipeline between the first heat source component and the heat storage component, the pipeline between the heat exchange component and the second heat source component, the pipeline between the heat exchange component and the user side, and the pipeline between the second heat source component and the user side are all provided with expansion constant pressure components (2), and the expansion constant pressure components (2) are all connected with the softened water component (1);
the heat storage assembly and the second heat source assembly can independently provide heat sources for the user terminal and can also provide heat sources for the user simultaneously.
2. The complementary multi-function regulated heating system of claim 1, further comprising: the first heat source component comprises a flat plate type heat collector (3) for receiving solar illumination and a heat collection side plate type converter (4) arranged in parallel.
3. A complementary multi-function regulated heating system according to claim 2 and further comprising: the anti-freezing component comprises an anti-freezing liquid storage tank (5) and an anti-freezing liquid pump (6) which are connected in parallel, the anti-freezing liquid storage tank (5) is arranged on the input end of the flat plate type heat collector (3) and is connected with the output end of the flat plate type heat collector (3), and the anti-freezing liquid pump (6) is arranged between the flat plate type heat collector (3) and the heat collecting side plate type converter (4).
4. A complementary multi-function regulated heating system according to claim 3 and further characterized by: the cooling assembly comprises an air cooler (7), the output end of the air cooler (7) is connected with the input end of the flat plate type heat collector (3), and the input end of the air cooler (7) is connected with the output end of the antifreezing liquid pump (6).
5. A complementary multi-function regulated heating system according to claim 3 and further characterized by: the heat storage assembly comprises a heat storage water pump (8) and a heat storage water tank (9), the heat storage water pump (8) is arranged between the heat storage water tank (9) and the heat collection side plate type converter (4), and the softened water assembly (1) is connected with the heat storage water tank (9).
6. The complementary multi-function regulated heating system of claim 5, further comprising: the heat exchange assembly comprises a first heat exchange pump (10), heat exchange plates (11) and a second heat exchange pump (12), the first heat exchange pump (10) is arranged between the heat storage water tank (9) and the heat exchange plates (11) and arranged at the output end of the heat storage water tank (9), the heat exchange plates (11) comprise heat pump heat exchange plates (13) and tail end heat exchange plates (14), the tail end heat exchange plates (14) are directly connected with a user end (15), and the heat pump heat exchange plates (13) are connected with the second heat source assembly through the second heat exchange pump (12).
7. The complementary multi-function regulated heating system of claim 6, further comprising: the second heat source component comprises a high-temperature type water source heat pump set (16), and the high-temperature type water source heat pump set (16) is arranged between the second heat exchange pump (12) and the user terminal (15).
8. The complementary multi-function regulated heating system of claim 7, further comprising: and a user heating water pump (17) is arranged at the input end of the user end.
9. A complementary multi-function regulated heating system according to claim 8 and further comprising: the input end of the user heating water pump (17), the input end of the second heat exchange pump (12) and the input end of the antifreeze liquid pump (6) are connected with the expansion constant-pressure component (2).
10. A complementary multi-function regulated heating system according to claim 9 and further comprising: the expansion constant-pressure component (2) comprises a constant-pressure pump, and the input end of the constant-pressure pump is connected with the softened water component (1).
CN202020093187.5U 2020-01-16 2020-01-16 Complementary multifunctional adjusting heating system Expired - Fee Related CN211650419U (en)

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CN202020093187.5U CN211650419U (en) 2020-01-16 2020-01-16 Complementary multifunctional adjusting heating system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111442323A (en) * 2020-01-16 2020-07-24 西藏华阳供热工程服务有限公司 Complementary multifunctional adjusting heating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111442323A (en) * 2020-01-16 2020-07-24 西藏华阳供热工程服务有限公司 Complementary multifunctional adjusting heating system

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