CN112484339A - Domestic hot water, cold supply and heat supply combined supply system - Google Patents
Domestic hot water, cold supply and heat supply combined supply system Download PDFInfo
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- CN112484339A CN112484339A CN202011449799.4A CN202011449799A CN112484339A CN 112484339 A CN112484339 A CN 112484339A CN 202011449799 A CN202011449799 A CN 202011449799A CN 112484339 A CN112484339 A CN 112484339A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 227
- 239000003507 refrigerant Substances 0.000 claims description 59
- 238000001816 cooling Methods 0.000 abstract description 19
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 45
- 238000010438 heat treatment Methods 0.000 description 19
- 230000009471 action Effects 0.000 description 18
- 239000000243 solution Substances 0.000 description 7
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- Mechanical Engineering (AREA)
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- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides a domestic hot water, cold supply and heat supply combined supply system, and belongs to the technical field of domestic hot water and air conditioning systems. This life hot water, the cooling, heat supply allies oneself with confession system includes heat pump set, life hot water user side, municipal administration water supply end and air conditioner are terminal, heat pump set's compressor, first heat exchanger, throttling arrangement and second heat exchanger connect gradually form first closed loop, it forms second closed loop to connect between air conditioner terminal and the second heat exchanger, the export of municipal administration water supply end links to each other with the first end of first main line, the second end of first main line links to each other with the first end of first branch road in parallel and the branch road in parallel of second respectively, first heat exchanger, the correspondence of second heat exchanger is connected in first branch road in parallel, the second is on the branch road in parallel. The invention realizes the combined supply of domestic hot water, cold supply and heat supply, simplifies the system structure, simplifies the system control, saves the system equipment consumables, reduces the installation space and is beneficial to saving energy.
Description
Technical Field
The invention relates to the technical field of domestic hot water and air conditioning systems, in particular to a domestic hot water, cold supply and heat supply combined supply system.
Background
With the improvement of living standard, the demands of people on air conditioning, cold and heat, and living hot water are continuously increased, which promotes the popularization of air conditioning and hot water systems. In the traditional supply mode, heat pump units are mostly adopted to provide cold and hot water of an air conditioner, and then one unit is independently added to prepare domestic hot water. However, the scheme needs two systems, so that the installation complexity and the occupied area are increased, the equipment investment cost is increased, a large amount of condensed heat is generated when the heat pump unit operates in a refrigeration mode, and the energy cannot be utilized by adopting two independent systems, so that the energy is wasted to a certain extent.
For simplifying above-mentioned system, improving the energy utilization degree, the condensation heat recovery unit has appeared, can realize the recycle to the condensation heat under the cooling mode, improved the energy utilization degree to a certain extent, but it still has certain shortcoming: the system capable of meeting the requirements of refrigeration and domestic hot water has more components, the system structure and the control strategy are more complex, and domestic hot water supply under a heat supply mode cannot be realized.
Disclosure of Invention
The invention provides a domestic hot water, cold supply and heat supply combined supply system, which can realize the combined supply of domestic hot water, cold supply and heat supply on the premise of simplifying the system structure.
The invention provides a domestic hot water, cold supply and heat supply combined supply system which comprises a heat pump unit, a domestic hot water user side, a municipal water supply end and an air conditioner tail end, wherein the heat pump unit comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger, the compressor, the first heat exchanger, the throttling device and the second heat exchanger are sequentially connected to form a first closed loop, and a second closed loop is formed between the air conditioner tail end and the second heat exchanger; the outlet of the municipal water supply end is connected with the first end of a first main pipeline, the second end of the first main pipeline is respectively connected with the first ends of a first parallel branch and a second parallel branch, the second ends of the first parallel branch and the second parallel branch are respectively connected with the first end of the second main pipeline, the second end of the second main pipeline is connected with the inlet of the domestic hot water user end, and the first heat exchanger and the second heat exchanger are correspondingly connected on the first parallel branch and the second parallel branch.
According to the domestic hot water, cold supply and heat supply combined supply system provided by the invention, the first heat exchanger comprises a first heat exchanger water channel, a first heat exchanger refrigerant channel, an air channel and a fan, wherein two ends of the first heat exchanger refrigerant channel are respectively and correspondingly connected with the compressor and the throttling device; the two ends of the first heat exchanger water channel are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form the first parallel branch, and the fan is connected with the air channel.
According to the domestic hot water, cold supply and heat supply combined supply system provided by the invention, the second heat exchanger comprises a second heat exchanger first water channel, a second heat exchanger refrigerant channel and a second heat exchanger second water channel, and two ends of the second heat exchanger first water channel are respectively connected with the tail end of the air conditioner to form the second closed loop; two ends of the refrigerant channel of the second heat exchanger are correspondingly connected with the compressor and the throttling device respectively; and two ends of a second water channel of the second heat exchanger are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form the second parallel branch.
The domestic hot water, cold supply and heat supply combined supply system further comprises a third heat exchanger, wherein the third heat exchanger comprises a third heat exchanger water channel and a third heat exchanger refrigerant channel, the third heat exchanger refrigerant channel is connected to a connecting pipeline between the throttling device and the second heat exchanger refrigerant channel, and the third heat exchanger water channel is connected to a connecting pipeline between the second heat exchanger first water channel and the tail end of the air conditioner.
According to the domestic hot water, cold supply and heat supply combined supply system provided by the invention, the first main pipeline or the second main pipeline is provided with the first water pump; a second water pump is arranged on the second closed loop; a first valve is arranged on the first parallel branch; and a second valve is arranged on the second parallel branch.
The domestic hot water, cold supply and heat supply combined supply system further comprises a domestic hot water circulating branch, wherein a first end of the domestic hot water circulating branch is connected with an outlet of a domestic hot water user side, and a second end of the domestic hot water circulating branch is connected with the first main pipeline;
a third valve is arranged on the first main pipeline and is arranged on the first main pipeline between an outlet of the municipal water supply end and the second end of the domestic hot water circulation branch; a fourth valve is arranged on the domestic hot water circulation branch;
when the first water pump is arranged on the first main pipeline, the first water pump is arranged on the first main pipeline between the first end of the first parallel branch and the second end of the domestic hot water circulation branch.
According to the domestic hot water, cold supply and heat supply combined supply system provided by the invention, the heat pump unit comprises a four-way reversing valve, and the compressor is connected with the first heat exchanger and the second heat exchanger through the four-way reversing valve.
According to the domestic hot water, cold supply and heat supply combined supply system provided by the invention, an auxiliary heat source is also arranged at the inlet of the domestic hot water user side.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
the domestic hot water, cold supply and heat supply combined supply system provided by the invention is characterized in that a compressor, a first heat exchanger, a throttling device and a second heat exchanger are sequentially connected to form a first closed loop, the tail end of an air conditioner is connected with the second heat exchanger to form a second closed loop, the outlet of a municipal water supply end is connected with the first end of a first main pipeline, the second end of the first main pipeline is respectively connected with the first ends of a first parallel branch and a second parallel branch, the second ends of the first parallel branch and the second parallel branch are respectively connected with the first end of the second main pipeline, the second end of the second main pipeline is connected with the inlet of a domestic hot water user end, and the first heat exchanger and the second heat exchanger are correspondingly connected on the first parallel branch and the second parallel branch; when in cooling operation, the heat discharged by the first closed loop can be recovered through the first heat exchanger, so that the requirements of cooling and domestic hot water user sides are met simultaneously; during heating operation, the condensation heat of the first closed loop can be absorbed through the second heat exchanger, so that the demands of heat supply and domestic hot water user sides are met simultaneously, and combined supply of domestic hot water, cold supply and heat supply is realized.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a domestic hot water, cold supply and heat supply combined supply system provided by the invention;
FIG. 2 is a schematic view of the heating mode of the present invention;
FIG. 3 is a schematic view of the cooling mode of the present invention;
FIG. 4 is a schematic diagram of the heating and once-through life hot water mode of the present invention;
FIG. 5 is a schematic view of the cooling and once-through life hot water mode of the present invention;
FIG. 6 is a schematic view of a domestic hot water mode of the heating and hot water tank circulation heating type of the present invention;
FIG. 7 is a schematic view of a domestic hot water mode of the cooling and hot water tank circulation heating type of the present invention;
fig. 8 is a schematic diagram of the domestic hot water, cooling and heating combined supply system with the overheating section.
Reference numerals:
1: a compressor; 2: a four-way reversing valve; 3: a first heat exchanger;
31: first heat exchanger water pass 32: first heat exchanger refrigeration 33: an air passage;
a lane; an agent channel;
34: a fan; 4: an air conditioner terminal; 5: a throttling device;
61: a first water pump; 62: a second water pump; 71: a first valve;
72: a second valve; 73: a third valve; 74: a fourth valve;
8: a municipal water supply end; 9: a second heat exchanger; 91: first heat exchanger
A water passage;
92: second heat exchanger refrigeration 93: second heat exchanger second 10: a domestic hot water user side;
an agent channel; a water passage;
11: a third heat exchanger; 111: third heat exchanger water pass 112: refrigeration of third heat exchanger
A lane; an agent channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The domestic hot water, cold supply and heat supply combined supply system of the present invention is described below with reference to fig. 1 to 8, and the system includes a heat pump unit, an air conditioner terminal 4, a municipal water supply terminal 8 and a domestic hot water user terminal 10. The heat pump unit comprises a compressor 1, a first heat exchanger 3, a throttling device 5 and a second heat exchanger 9, wherein the compressor 1, the first heat exchanger 3, the throttling device 5 and the second heat exchanger 9 are sequentially connected to form a first closed loop, and the first closed loop is a heat pump circulation loop. The connection between the air conditioning terminal 4 and the second heat exchanger 9 forms a second closed loop which is an air conditioning water circulation loop. Wherein, the export of municipal administration water supply end 8 links to each other with the first end of first main line, and the second end of first main line links to each other with the first end of first parallel branch road and the parallel branch road of second respectively, and the second end of first parallel branch road and the parallel branch road of second links to each other with the first end of second main line respectively, and the second end of second main line links to each other with the entry of life hot water user end 10, and first heat exchanger 3 is connected on first parallel branch road, and second heat exchanger 9 is connected on the parallel branch road of second.
When in cooling operation, the heat discharged by the first closed loop can be recovered through the first heat exchanger 3, so that the requirements of cooling and domestic hot water user sides are met simultaneously; during heating operation, the condensation heat of the first closed loop can be absorbed through the second heat exchanger 9, so that the demands of heat supply and domestic hot water user sides are met simultaneously, and combined supply of domestic hot water, cold supply and heat supply is realized.
In some embodiments of the present invention, the first heat exchanger 3 includes a first heat exchanger water passage 31, a first heat exchanger refrigerant passage 32, an air passage 33, and a fan 34, wherein both ends of the first heat exchanger refrigerant passage 32 are respectively connected to the compressor 1 and the throttling device 5. Two ends of the first heat exchanger water channel 31 are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form a first parallel branch. The fan 34 is connected to the air passage 33.
The medium flowing through the first heat exchanger water passage 31 is water, and the medium flowing through the first heat exchanger refrigerant passage 32 is a refrigerant. That is, through the heat transfer between first heat exchanger water passageway 31 and the first heat exchanger refrigerant passageway 32, can retrieve the heat that the first closed loop discharged for prepare life hot water, and then satisfy the demand of life hot water user.
The fan 34 can convey air through the air passage 33, so that the air exchanges heat with the first heat exchanger water passage 31 and the first heat exchanger refrigerant passage 32, and any two heat exchanges of three fluid media, namely air, water and refrigerant, can be realized.
In some embodiments of the present invention, the second heat exchanger 9 comprises a second heat exchanger first water channel 91, a second heat exchanger refrigerant channel 92 and a second heat exchanger second water channel 93, wherein both ends of the second heat exchanger first water channel 91 are respectively connected with the air conditioner terminal 4 to form a second closed loop. Both ends of the second heat exchanger refrigerant passage 92 are connected to the compressor 1 and the throttle device 5, respectively. Two ends of a second water channel 93 of the second heat exchanger are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form a second parallel branch. The medium flowing through the first water channel 91 of the second heat exchanger may be a circulating medium such as water and coolant, the medium flowing through the second water channel 93 of the second heat exchanger may be water, and the medium flowing through the refrigerant channel 92 of the second heat exchanger may be a refrigerant. That is, the condensation heat of the first closed loop can be absorbed through the heat exchange among the second heat exchanger first water channel 91, the second heat exchanger second water channel 93 and the second heat exchanger refrigerant channel 92, so that the demands of domestic hot water users and air conditioner end heat supply users are met.
Specifically, the first water pump 61 may be disposed on the first main pipe or the second main pipe according to actual use requirements. In the present embodiment, the first water pump 61 is provided on the first main pipe. That is, the outlet of the municipal water supply end 8 is connected to two parallel branches (a first parallel branch and a second parallel branch, respectively) through a first main pipe, the two parallel branches pass through a first heat exchanger water passage 31 and a second heat exchanger second water passage 93, and then the two parallel branches join at the second main pipe and are connected to the inlet of the domestic hot water user end 10 through the second main pipe.
Wherein a first valve 71 is arranged on the first parallel branch. A second valve 72 is provided in the second parallel branch.
In some embodiments of the present invention, the system further comprises a domestic hot water circulation branch, a first end of the domestic hot water circulation branch is connected to the outlet of the domestic hot water user terminal 10, and a second end of the domestic hot water circulation branch is connected to the first main pipeline. The domestic hot water circulating branch can form a hot water tank circulating heating type domestic hot water loop together with the first main pipeline, the second main pipeline, the first parallel branch and the second parallel branch.
Wherein, a third valve 73 is arranged on the first main pipeline, and the third valve 73 is arranged on the first main pipeline between the outlet of the municipal water supply end 8 and the second end of the domestic hot water circulation branch. A fourth valve 74 is arranged on the domestic hot water circulation branch.
When the first water pump 61 is disposed on the first main pipe, the first water pump 61 is disposed on the first main pipe between the first parallel branch and the domestic hot water circulation branch, that is, the second end of the domestic hot water circulation branch is located between the first water pump 61 and the third valve 73.
In some embodiments of the present invention, the system further comprises a third heat exchanger 11, the third heat exchanger 11 comprising a third heat exchanger water channel 111 and a third heat exchanger refrigerant channel 112, wherein the third heat exchanger refrigerant channel 112 is connected to the connection between the throttling device 5 and the second heat exchanger refrigerant channel 92, and the third heat exchanger water channel 111 is connected to the connection between the second heat exchanger first water channel 91 and the air conditioning terminal 4. The medium flowing through the third heat exchanger water channel 111 may be a circulating medium such as water and brine, and the medium flowing through the third heat exchanger refrigerant channel 112 may be a refrigerant.
In some embodiments of the invention, the heat pump unit comprises a four-way reversing valve 2, and the compressor 1 is connected with the first heat exchanger refrigerant channel 32 of the first heat exchanger 3 and the second heat exchanger refrigerant channel 92 of the second heat exchanger 9 through the four-way reversing valve 2. By adjusting the four-way selector valve 2, the direction of circulation of the medium in the first closed circuit can be adjusted.
In the embodiment of the present invention, a second water pump 62 is also connected to the second closed loop to provide circulating power to the second closed loop.
In an embodiment of the present invention, an auxiliary heat source is further disposed at the inlet of the domestic hot water user end 10, and is used for further heating the hot water flowing into the domestic hot water user end 10 to meet the requirement of the domestic hot water user.
The operation modes of the present invention will be specifically described below with reference to the drawings.
Fig. 2 is a schematic diagram of the heating mode of the present invention. When the air conditioner terminal 4 needs to supply heat, the second water pump 62 is turned on, the first water pump 61 is turned off, the first valve 71, the second valve 72, the third valve 73 and the fourth valve 74 are turned off, and the fan 34 on the first heat exchanger 3 is operated.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, the second heat exchanger 9 becomes a condenser, and the first heat exchanger 3 becomes an evaporator; under the action of the second water pump 62, the heating circulation liquid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, flows through the air conditioner terminal 4 to release heat, returns to the second heat exchanger first water channel 91 to continuously absorb heat, and circulates in the way; meanwhile, the first heat exchanger 3 exchanges heat with the first heat exchanger refrigerant passage 32 by the blower 34 thereof, so that the first heat exchanger refrigerant passage 32 absorbs heat from the outdoor air.
Fig. 3 is a schematic view of a cooling mode of the present invention. When the air conditioner terminal 4 needs cooling, the second water pump 62 is turned on, the first water pump 61 is turned off, the first valve 71, the second valve 72, the third valve 73 and the fourth valve 74 are turned off, and the fan 34 on the first heat exchanger 3 is operated.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, and the first heat exchanger 3 becomes a condenser and the second heat exchanger 9 becomes an evaporator; under the action of the second water pump 62, the cooling circulation fluid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to release heat, flows through the air conditioner terminal 4 to absorb heat, returns to the second heat exchanger first water channel 91 to release heat continuously, and circulates in such a way; at the same time, the first heat exchanger 3, under the action of its fan 34, exchanges heat with the first heat exchanger refrigerant channel 32, releasing heat to the outdoor air.
Fig. 4 is a schematic diagram of the heating and straight-through domestic hot water mode of the present invention. When the air conditioner terminal 4 needs heat supply and the domestic hot water user terminal 10 needs domestic hot water, the second valve 72 is opened, the first valve 71 is closed, the second water pump 62 and the first water pump 61 are opened, and the fan 34 on the first heat exchanger 3 is operated.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, the second heat exchanger 9 becomes a condenser, and the first heat exchanger 3 becomes an evaporator; under the action of the second water pump 62, the heating circulation liquid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, flows through the air conditioner terminal 4 to release heat, returns to the second heat exchanger first water channel 91 to continuously absorb heat, and circulates in the way; meanwhile, under the action of the fan 34 of the first heat exchanger 3, air exchanges heat with the first heat exchanger refrigerant channel 32, so that the first heat exchanger refrigerant channel 32 absorbs heat from outdoor air; meanwhile, under the action of the first water pump 61, the domestic hot water supply water flows from the municipal water supply end 8, passes through the second heat exchanger second water channel 93, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, and then flows to the domestic hot water user end 10.
Fig. 5 is a schematic view showing the cooling and direct hot water supplying mode according to the present invention. When the air conditioner terminal 4 needs cooling and the domestic hot water user terminal 10 needs domestic hot water, the first valve 71 is opened, the second valve 72 is closed, and the first water pump 61 and the second water pump 62 are respectively opened.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, and the first heat exchanger 3 becomes a condenser and the second heat exchanger 9 becomes an evaporator; under the action of the second water pump 62, the cooling circulation fluid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to release heat, flows through the air conditioner terminal 4 to absorb heat, returns to the second heat exchanger first water channel 91 to release heat continuously, and circulates in such a way; meanwhile, under the action of the second water pump 62, the domestic hot water supply water flows from the municipal water supply end 8, passes through the first heat exchanger water passage 31, exchanges heat with the first heat exchanger refrigerant passage 32 to absorb heat, and then flows to the domestic hot water user end 10. At this time, if the heat quantity to be released by the first heat exchanger 3 as a condenser is larger than the heat quantity used by a domestic hot water user, the fan 34 on the first heat exchanger 3 is started to exchange heat between the air and the first heat exchanger refrigerant channel 32, and the heat quantity is released to the outdoor air; otherwise the fan 34 need not be turned on.
Fig. 6 is a schematic view illustrating a domestic hot water mode of heating and hot water tank circulation heating according to the present invention. When the air conditioner terminal 4 needs to supply heat and the domestic hot water user terminal 10 needs domestic hot water, the second valve 72 and the fourth valve 74 are opened, the first valve 71 and the third valve 73 are closed, the first water pump 61 and the second water pump 62 are respectively opened, and the fan 34 on the first heat exchanger 3 is operated.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, the second heat exchanger 9 becomes a condenser, and the first heat exchanger 3 becomes an evaporator; under the action of the second water pump 62, the heating circulation liquid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, flows through the air conditioner terminal 4 to release heat, returns to the second heat exchanger first water channel 91 to continuously absorb heat, and circulates in the way; meanwhile, under the action of the fan 34 of the first heat exchanger 3, air exchanges heat with the first heat exchanger refrigerant channel 32, so that the first heat exchanger refrigerant channel 32 absorbs heat from outdoor air; meanwhile, under the action of the first water pump 61, the domestic hot water flows through the second heat exchanger second water channel 93, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, then flows to the domestic hot water user terminal 10, and the above steps are repeated in a circulating manner; when the water storage capacity of the domestic hot water user terminal 10 is insufficient, the third valve 73 is opened, the fourth valve 74 is closed, and the rest is kept unchanged, and under the action of the first water pump 61, the domestic hot water supply water starts from the municipal water supply 8, flows through the second heat exchanger second water channel 93, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, and then flows to the domestic hot water user terminal 10 to increase the water storage capacity.
Fig. 7 is a schematic view illustrating a domestic hot water mode in which the cold and hot water tanks are cyclically heated according to the present invention. When the air conditioner terminal 4 needs cooling and the domestic hot water user terminal 10 needs domestic hot water, the first valve 71 and the fourth valve 74 are opened, the second valve 72 and the third valve 73 are closed, and the first water pump 61 and the second water pump 62 are respectively opened.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, and the first heat exchanger 3 becomes a condenser and the second heat exchanger 9 becomes an evaporator; under the action of the second water pump 62, the cooling circulation fluid flows through the second heat exchanger first water channel 91, exchanges heat with the second heat exchanger refrigerant channel 92 to release heat, flows through the air conditioner terminal 4 to absorb heat, returns to the second heat exchanger first water channel 91 to release heat continuously, and circulates in such a way; meanwhile, under the action of the first water pump 61, the domestic hot water flows through the first heat exchanger water channel 31, exchanges heat with the first heat exchanger refrigerant channel 32 to absorb heat, then flows to the domestic hot water user terminal 10, and the steps are repeated in a circulating manner; when the water storage capacity of the domestic hot water user terminal 10 is insufficient, the third valve 73 is opened, the fourth valve 74 is closed, and the rest is kept unchanged, so that under the action of the first water pump 61, domestic hot water is supplied from the municipal water supply terminal 8, flows through the first heat exchanger water channel 31, exchanges heat with the first heat exchanger refrigerant channel 32 to absorb heat, and then flows to the domestic hot water user terminal 10 to increase the water storage capacity. At this time, if the heat quantity to be released by the first heat exchanger 3 as a condenser is larger than the heat quantity used by a domestic hot water user, the fan 34 on the first heat exchanger 3 is started to exchange heat between the air and the first heat exchanger refrigerant channel 32, and the heat quantity is released to the outdoor air; otherwise the fan 34 need not be turned on.
Fig. 8 is a schematic view of the domestic hot water, cooling and heating combined supply system with the overheating section of the present invention. When heat supply and domestic hot water demand are needed simultaneously, the temperature of a condenser is often changed when domestic hot water is produced, and the efficiency of a heat pump is reduced. To alleviate this effect, the second heat exchanger 9 only undertakes the heat exchange of the overheating section by adding the third heat exchanger 11, and the heat exchange of the domestic hot water does not pass through the whole process of the condenser any more, but only passes through the second heat exchanger 9 as the overheating section.
When the air conditioner terminal 4 needs heat supply and the domestic hot water user terminal 10 needs domestic hot water, the second valve 72 is opened, the first valve 71 is closed, the first water pump 61 and the second water pump 62 are respectively opened, and the fan 34 on the first heat exchanger 3 is operated.
At the moment, the compressor 1 is started, the four-way reversing valve 2 is adjusted, the second heat exchanger 9 and the third heat exchanger 11 become condensers, and the first heat exchanger 3 becomes an evaporator; under the action of the second water pump 62, the heat supply circulating liquid flows through the second heat exchanger first water channel 91 and the third heat exchanger water channel 111, exchanges heat with the second heat exchanger refrigerant channel 92 and the third heat exchanger refrigerant channel 112 respectively to absorb heat, flows through the air conditioner terminal 4 to release heat, returns to the second heat exchanger first water channel 91 and the third heat exchanger water channel 111 to continuously absorb heat, and circulates in the way; meanwhile, under the action of the fan 34 of the first heat exchanger 3, air exchanges heat with the first heat exchanger refrigerant channel 32, so that the first heat exchanger refrigerant channel 32 absorbs heat from outdoor air; meanwhile, under the action of the first water pump 61, the domestic hot water supply water flows from the municipal water supply end 8, passes through the second heat exchanger second water channel 93, exchanges heat with the second heat exchanger refrigerant channel 92 to absorb heat, and then flows to the domestic hot water user end 10.
The embodiment specifically describes the straight-flow domestic hot water mode as an example, and in addition, the straight-flow domestic hot water mode can be replaced by a hot water tank circulation heating type domestic hot water mode, and the structural form and the operation mode of the straight-flow domestic hot water mode are similar to those of the embodiment, and are not described again here.
In summary, in the domestic hot water, cold supply and heat supply combined supply system, the first heat exchanger 3 is a three-medium heat exchanger, and the second heat exchanger 9 is a three-channel heat exchanger, so that the system structure is simplified, the condensation heat can be recycled during cold supply to prepare domestic hot water, the energy for preparing domestic hot water is saved, the equipment consumables and the installation space are saved, and the domestic hot water supply in a heat supply mode is realized.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A domestic hot water, cold supply and heat supply combined supply system is characterized by comprising a heat pump unit, a domestic hot water user side, a municipal water supply end and an air conditioner tail end, wherein the heat pump unit comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger, the compressor, the first heat exchanger, the throttling device and the second heat exchanger are sequentially connected to form a first closed loop, and a second closed loop is formed between the air conditioner tail end and the second heat exchanger; the outlet of the municipal water supply end is connected with the first end of a first main pipeline, the second end of the first main pipeline is respectively connected with the first ends of a first parallel branch and a second parallel branch, the second ends of the first parallel branch and the second parallel branch are respectively connected with the first end of the second main pipeline, the second end of the second main pipeline is connected with the inlet of the domestic hot water user end, and the first heat exchanger and the second heat exchanger are correspondingly connected on the first parallel branch and the second parallel branch.
2. The domestic hot water, cold supply and heat supply combined supply system according to claim 1, wherein the first heat exchanger comprises a first heat exchanger water passage, a first heat exchanger refrigerant passage, an air passage and a fan, and two ends of the first heat exchanger refrigerant passage are respectively connected with the compressor and the throttling device correspondingly; the two ends of the first heat exchanger water channel are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form the first parallel branch, and the fan is connected with the air channel.
3. The domestic hot water, cold supply and heat supply combined supply system according to claim 1, wherein the second heat exchanger comprises a second heat exchanger first water channel, a second heat exchanger refrigerant channel and a second heat exchanger second water channel, and two ends of the second heat exchanger first water channel are respectively connected with the tail end of the air conditioner to form the second closed loop; two ends of the refrigerant channel of the second heat exchanger are correspondingly connected with the compressor and the throttling device respectively; and two ends of a second water channel of the second heat exchanger are respectively and correspondingly connected with the second end of the first main pipeline and the first end of the second main pipeline to form the second parallel branch.
4. A domestic hot water, cold supply and heat supply combined supply system according to claim 3, further comprising a third heat exchanger, wherein the third heat exchanger comprises a third heat exchanger water passage and a third heat exchanger refrigerant passage, the third heat exchanger refrigerant passage is connected to the connecting pipeline between the throttling device and the second heat exchanger refrigerant passage, and the third heat exchanger water passage is connected to the connecting pipeline between the second heat exchanger first water passage and the air conditioner terminal.
5. The domestic hot water, cold supply and heat supply combined supply system according to any one of claims 1 to 4, wherein a first water pump is arranged on the first main pipeline or the second main pipeline; a second water pump is arranged on the second closed loop; a first valve is arranged on the first parallel branch; and a second valve is arranged on the second parallel branch.
6. The domestic hot water, cold supply and heat supply combined supply system according to claim 5, further comprising a domestic hot water circulation branch, wherein a first end of the domestic hot water circulation branch is connected with an outlet of the domestic hot water user side, and a second end of the domestic hot water circulation branch is connected with the first main pipeline;
a third valve is arranged on the first main pipeline and is arranged on the first main pipeline between an outlet of the municipal water supply end and the second end of the domestic hot water circulation branch; a fourth valve is arranged on the domestic hot water circulation branch;
when the first water pump is arranged on the first main pipeline, the first water pump is arranged on the first main pipeline between the first end of the first parallel branch and the second end of the domestic hot water circulation branch.
7. The domestic hot water, cold supply and heat supply combined supply system according to any one of claims 1 to 4, wherein the heat pump unit comprises a four-way reversing valve, and the compressor is connected with the first heat exchanger and the second heat exchanger through the four-way reversing valve.
8. The domestic hot water, cold supply and heat supply combined supply system according to any one of claims 1 to 4, wherein an auxiliary heat source is further provided at the inlet of the domestic hot water user side.
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| CN202011449799.4A CN112484339B (en) | 2020-12-09 | 2020-12-09 | Domestic hot water, cold supply and heat supply combined supply system |
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| CN202011449799.4A CN112484339B (en) | 2020-12-09 | 2020-12-09 | Domestic hot water, cold supply and heat supply combined supply system |
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| CN112484339B CN112484339B (en) | 2024-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517959A (en) * | 2022-02-28 | 2022-05-20 | 青岛海尔空调电子有限公司 | Control method of air conditioning system |
| CN114517940A (en) * | 2022-02-28 | 2022-05-20 | 青岛海尔空调电子有限公司 | Air conditioning system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509363A (en) * | 2016-01-31 | 2016-04-20 | 嘉兴学院 | High-efficiency clean multi-energy comprehensive utilization cold-heat combined supply system |
| WO2020143169A1 (en) * | 2019-01-07 | 2020-07-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method therefor |
| CN214250197U (en) * | 2020-12-09 | 2021-09-21 | 清华大学 | Domestic hot water, cold supply and heat supply combined supply system |
-
2020
- 2020-12-09 CN CN202011449799.4A patent/CN112484339B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509363A (en) * | 2016-01-31 | 2016-04-20 | 嘉兴学院 | High-efficiency clean multi-energy comprehensive utilization cold-heat combined supply system |
| WO2020143169A1 (en) * | 2019-01-07 | 2020-07-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method therefor |
| CN214250197U (en) * | 2020-12-09 | 2021-09-21 | 清华大学 | Domestic hot water, cold supply and heat supply combined supply system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517959A (en) * | 2022-02-28 | 2022-05-20 | 青岛海尔空调电子有限公司 | Control method of air conditioning system |
| CN114517940A (en) * | 2022-02-28 | 2022-05-20 | 青岛海尔空调电子有限公司 | Air conditioning system |
| CN114517959B (en) * | 2022-02-28 | 2024-02-20 | 青岛海尔空调电子有限公司 | Control method of air conditioning system |
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| CN112484339B (en) | 2024-05-28 |
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