CN117847610A - Heat exchange system - Google Patents

Heat exchange system Download PDF

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Publication number
CN117847610A
CN117847610A CN202211219765.5A CN202211219765A CN117847610A CN 117847610 A CN117847610 A CN 117847610A CN 202211219765 A CN202211219765 A CN 202211219765A CN 117847610 A CN117847610 A CN 117847610A
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China
Prior art keywords
heat exchange
water temperature
switching device
heat
flow path
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CN202211219765.5A
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Chinese (zh)
Inventor
于永全
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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Priority to CN202211219765.5A priority Critical patent/CN117847610A/en
Publication of CN117847610A publication Critical patent/CN117847610A/en
Pending legal-status Critical Current

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Abstract

The invention provides a heat exchange system, which comprises a heat pump system, a wall-mounted furnace system and a waterway heat exchange system; the heat pump system comprises a heat pump circulation loop and a first heat exchanger arranged on the heat pump circulation loop, wherein the first heat exchanger has a heating state; the wall-mounted furnace system comprises a wall-mounted furnace; the waterway heat exchange system comprises a first heat exchange flow path, a second heat exchange flow path, a heat exchange working section and a first switching device, wherein the first heat exchange flow path is connected with the heat exchange working section to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section positioned between the input end of the first heat exchange flow path and the heat exchange working section, two ends of the second heat exchange flow path are connected with two ends of the connecting section, and the first switching device is used for switching the first heat exchange flow path to be communicated with one of the connecting section and the second heat exchange flow path; the first heat exchange flow path is connected with the first heat exchanger, and the second heat exchange flow path is connected with the wall-mounted furnace.

Description

Heat exchange system
Technical Field
The invention relates to the technical field of household appliances, in particular to a heat exchange system.
Background
The existing household independent hot water scheme mainly comprises two forms of gas wall-mounted furnaces and heat pump heating: the gas wall-mounted furnace mainly uses natural gas, so that the combustion efficiency of a small furnace is low, the heating cost is high, and the wall-mounted furnace has high noise during working; the heating effect of the heat pump system is reduced in a low-temperature environment, the comfort is easily affected by frequent defrosting, and the gas wall-mounted boiler and the heat pump are matched with a large-volume water tank, so that a large indoor area is occupied.
Disclosure of Invention
The invention mainly aims to provide a heat exchange system, which aims to improve the existing domestic hot water supply scheme that a wall-mounted boiler is independently used, so that the combustion efficiency is low, the heating cost is high, the noise is high, a heat pump system is independently used, the heating effect is attenuated in a low-temperature environment, and the comfort is easily influenced by frequent defrosting; and the gas wall-mounted furnace and the heat pump are matched with a large-volume water tank, so that the technical problem of occupying a large indoor area is solved.
To achieve the above object, the present invention provides a heat exchange system comprising:
the heat pump system comprises a heat pump circulation loop and a first heat exchanger arranged on the heat pump circulation loop, wherein the first heat exchanger has a heating state;
the wall-mounted furnace system comprises a wall-mounted furnace; the method comprises the steps of,
the waterway heat exchange system comprises a first heat exchange flow path, a second heat exchange flow path, a heat exchange working section and a first switching device, wherein the first heat exchange flow path is connected with the heat exchange working section to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section positioned between the input end of the first heat exchange flow path and the heat exchange working section, two ends of the second heat exchange flow path are connected with two ends of the connecting section, and the first switching device is used for switching the first heat exchange flow path to be communicated with one of the connecting section and the second heat exchange flow path;
The first heat exchange flow path is connected with the first heat exchanger, and the second heat exchange flow path is connected with the wall-mounted furnace.
Optionally, the first switching device includes a first three-way valve, and three interfaces of the first three-way valve are respectively connected with an input end of the first heat exchange flow path, one end of the connecting section, and one end of the second heat exchange flow path.
Optionally, the heat exchange working section includes:
the first heat exchange section is provided with a first heat exchange part which is used for exchanging heat between domestic water and hot water on the first heat exchange section;
the second heat exchange section is arranged in parallel with the first heat exchange section and is used for connecting an interface of a heat exchanger of heating or refrigerating equipment; the method comprises the steps of,
and the second switching device is used for switching the communication between the first heat exchange section and the first heat exchange flow path or the communication between the second heat exchange section and the first heat exchange flow path.
Optionally, the first heat exchange portion includes a second heat exchanger.
Optionally, the first heat exchange section includes a first branch, a second branch and a third branch, one end of the first branch is connected to the connection end, one end of the second branch and one end of the third branch are connected in parallel to the other end of the first branch, the other end of the second branch is connected to the first heat exchange flow path, and the other end of the third branch is connected to the second heat exchange flow path;
The heat exchange system further comprises a third switching device, wherein the third switching device is used for switching the first branch to be communicated with one of the first heat exchange flow path and the second heat exchange flow path;
the second heat exchanger is positioned on the first branch;
the second switching device is located on the first branch.
Optionally, the third switching device comprises a second three-way valve and/or a third three-way valve, wherein:
three interfaces of the second three-way valve are respectively connected with the second branch, the second heat exchange section and the first heat exchange flow path;
the third three-way valve is arranged on the second heat exchange flow path, and one interface of the third three-way valve is connected with the third branch.
Optionally, the second switching device comprises a first shut-off valve arranged on the first heat exchange section.
Optionally, the first heat exchanger further has a refrigeration state;
the heat exchange system further comprises a fourth switching device and a refrigerant branch, wherein two ends of the refrigerant branch are respectively connected with a refrigerant connecting section of the heat pump circulation loop, and the fourth switching device is used for switching the heat pump circulation loop to be communicated with one of the refrigerant connecting section and the refrigerant branch so as to correspondingly enable the first heat exchanger to be switched between the heating state and the refrigerating state;
The refrigerant branch is provided with the second heat exchange part which is used for heat exchange and heating of domestic water.
Optionally, the second heat exchange portion includes a third heat exchanger.
Optionally, the fourth switching device comprises a first throttling element and/or a second throttling element, wherein:
the first throttling element is positioned on the refrigerant connecting section;
the second throttling element is located on the second refrigerant flow path.
Optionally, the waterway heat exchange system further comprises a water pump and an expansion tank, wherein the water pump and the expansion tank are arranged on the first heat exchange flow path and are positioned at the upstream of the first heat exchanger, and the water pump and the expansion tank are arranged in parallel.
Optionally, the waterway heat exchange system further includes a fifth switching device including a second stop valve and/or a third stop valve, wherein:
the second stop valve is arranged in the second heat exchange flow path and is positioned at the water inlet of the wall-mounted furnace;
the third stop valve is arranged on the second heat exchange flow path and is positioned at the water outlet of the wall-mounted furnace.
Optionally, the heat exchange working section comprises a first heat exchange section, and a second heat exchanger is arranged on the first heat exchange section and is used for exchanging heat between domestic water and hot water on the first heat exchange section;
The heat exchange system further comprises a refrigerant branch, wherein the refrigerant branch is provided with a third heat exchanger, and the third heat exchanger is used for heat exchange and heating of domestic water;
the heat exchange system further comprises a heat storage water tank, the heat storage water tank comprises a shell and a heat storage part, a cavity is formed in the shell, and the heat storage part is arranged in the cavity and used for storing heat, so that when the heat pump system and the wall-mounted boiler system stop running, the heat can be released to heat domestic water;
wherein, the second heat exchanger and the third heat exchanger are both arranged in the cavity.
The invention is based on the heat exchange system, and further provides a heat exchange control method, the heat exchange system further comprises a heat exchange working section, the heat exchange working section comprises a first heat exchange section, a second switching device and a third switching device, and the first heat exchange section further comprises a first branch, a second branch and a third branch;
the heat exchange control method comprises the following steps:
receiving user input information, wherein the user input information comprises a user demand mode and a demand water temperature parameter;
and adjusting control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information.
Optionally, a second heat exchanger is arranged on the first heat exchange section and is used for exchanging heat between domestic water and hot water on the first heat exchange section;
the user demand mode includes a hot water mode, and the demand water temperature parameter includes a demand hot water temperature parameter;
according to the user input information, adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system, wherein the method comprises the following steps of:
comparing the required hot water temperature parameter with a preset hot water temperature parameter;
when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system to work according to a first control program;
when the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
Optionally, when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, the step of controlling the first switching device, the heat pump system and the wall-mounted boiler system to work according to a first control program includes:
Controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the communication of the first heat exchange section;
controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
acquiring a first actual water temperature parameter of the first heat exchange section;
calculating a water temperature difference delta T according to the first actual water temperature parameter and the required hot water temperature parameter 1 ；
When DeltaT 1 When the water temperature is larger than a first preset water temperature, controlling the heat pump system to continuously operate at the first power;
when the second preset water temperature is less than or equal to DeltaT 1 The method comprises the steps of controlling the heat pump system to operate at a second power when the temperature is smaller than or equal to a first preset water temperature, wherein the second power is smaller than the first power;
when DeltaT 1 And (3) controlling the heat pump system to stop running when the second preset water temperature is less than the second preset water temperature.
Optionally, when the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the step of controlling the first switching device, the heat pump system and the wall-mounted boiler system to work according to a second control program includes:
Controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
controlling the second switching device to switch the communication of the first heat exchange section;
controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
acquiring a second actual water temperature parameter of the first heat exchange section;
calculating a water temperature difference delta T according to the second actual water temperature parameter and the required hot water temperature parameter 2 ；
When DeltaT 2 Controlling the heat pump system and the wall-mounted boiler system to continuously operate at the first power;
when the second preset water temperature is less than or equal to DeltaT 2 Controlling the wall-mounted boiler system to stop running and controlling the heat pump system to run at a second power, wherein the second power is smaller than the first power;
when DeltaT 2 And controlling the heat pump system to stop running when the temperature is smaller than or equal to a second preset water temperature.
Optionally, the second heat exchange section is used for connecting an interface of a heat exchanger of heating or refrigerating equipment;
the user demand mode includes a heating mode, and the demand water temperature parameter includes a demand heating water temperature parameter;
The step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
comparing the required heating water temperature parameter with a preset heating water temperature parameter;
when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a first control program;
when the required heating water temperature parameter is greater than or equal to the preset heating water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
Optionally, when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a first control program includes:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
Controlling the second switching device to switch the second heat exchange section to be communicated;
the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
acquiring a third actual water temperature parameter of the second heat exchange section;
calculating a water temperature difference delta T according to the third actual water temperature parameter and the required heating water temperature parameter 3 ；
When DeltaT 3 When the third preset water temperature is more than the third preset water temperature, controlling the heat pump system to continuously operate at the first power;
when the fourth preset water temperature is less than or equal to delta T 3 The temperature of the water is smaller than or equal to a third preset water temperature, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power;
when DeltaT 3 And < a fourth preset water temperature, controlling the heat pump system to operate at a third power, wherein the third power is less than the second power.
Optionally, when the required heating water temperature parameter is greater than or equal to the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a second control program includes:
Controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
controlling the second switching device to switch the second heat exchange section to be communicated;
the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
acquiring a fourth actual water temperature parameter of the second heat exchange section;
calculating a water temperature difference delta T according to the fourth actual water temperature parameter and the required heating water temperature parameter 4 ；
When DeltaT 4 The third preset water temperature is larger than the third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power;
when the fourth preset water temperature is less than or equal to delta T 4 The temperature of the water is smaller than or equal to a third preset water temperature, the wall-mounted boiler system is controlled to stop running, and the heat pump system is controlled to run at a second power, wherein the second power is smaller than the first power;
when DeltaT 4 And < a fourth preset water temperature, controlling the heat pump system to operate at a third power, wherein the third power is less than the second power.
Optionally, the user demand mode includes a hot water heating mode, and the demand water temperature parameter includes a demand hot water temperature parameter and a demand heating water temperature parameter;
The step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the second heat exchange section to be communicated;
controlling the third heat exchanger to switch the first branch to be communicated with the second heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
acquiring a fifth actual water temperature parameter of the first branch and a sixth actual water temperature parameter of the second heat exchange section;
comparing the fifth actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the wall-mounted boiler system;
and comparing the sixth actual water temperature parameter with the required heating water temperature parameter, and adjusting a control strategy of the heat pump system.
Optionally, the first heat exchanger further has a refrigeration state;
the heat exchange system further comprises a fourth switching device and a refrigerant branch, wherein two ends of the refrigerant branch are respectively connected with a refrigerant connecting section of the heat pump circulation loop;
The user demand mode comprises a hot water refrigeration mode, and the demand water temperature parameter comprises a demand hot water temperature parameter and a demand refrigeration water temperature parameter;
the step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the second heat exchange section to be communicated;
controlling the third switching device to be closed;
controlling the fourth switching device to switch the heat pump circulation loop to be communicated with the refrigerant branch;
controlling the first heat exchanger to switch to the refrigeration state;
controlling the heat pump system to work for a preset time period with a first power;
acquiring a seventh actual water temperature parameter of the first heat exchange section and an eighth actual water temperature parameter of the second heat exchange section;
comparing the seventh actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the third switching device;
and comparing the eighth actual water temperature parameter with the required refrigeration water temperature parameter, and adjusting a control strategy of the heat pump system.
The invention provides a heat exchange system, which comprises a water path heat exchange system, a water path heat exchange system and a water path heat exchange system, wherein the water path heat exchange system comprises a first heat exchange flow path, a second heat exchange flow path, a heat exchange working section and a first switching device, the first heat exchange flow path is connected with the heat exchange working section to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section positioned between the input end of the first heat exchange flow path and the heat exchange working section, two ends of the second heat exchange flow path are connected with two ends of the connecting section, and the first switching device is used for switching the first heat exchange flow path to be communicated with one of the connecting section and the second heat exchange flow path; that is, when the first switching device is used for switching the first heat exchange flow path and the connecting section, the water on the waterway heat exchange system flows on the first heat exchange flow path and is heated only by virtue of the fact that the first heat exchanger is in a heating state; when the first switching device switches the communication between the first heat exchange flow path and the second heat exchange flow path, water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path and sequentially passes through the first heat exchanger and the wall-mounted furnace for heating; in this way, the first heat exchange flow path is switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, so that the waterway heat exchange system has different flow paths, and the heat pump system and the wall-mounted boiler system have different opening and closing and running states, and therefore the user can obtain hot water with different heating temperatures, and experience of the user is improved; simultaneously, the heat pump system and the wall-mounted boiler system are arranged on the heat exchange system, so that the heat pump system and the wall-mounted boiler system can intermittently run and complement each other, and the energy-saving requirement can be met while the water supply is ensured to meet the requirement of a user; furthermore, because the heat pump system and the wall-mounted boiler system are arranged on the heat exchange system at the same time, the heat exchange system only needs to be provided with a common water tank, so that the occupied indoor area is reduced, and convenience is brought to the life of users.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a heat exchange system according to an embodiment of the present invention;
fig. 2 is a schematic view of the heat exchange system of fig. 1 in a state of supplying domestic water (medium-temperature water);
fig. 3 is a schematic view of the heat exchange system of fig. 1 in a state of supplying domestic water (high-temperature water);
fig. 4 is a schematic view of the heat exchange system of fig. 1 in a state of supplying heating water (medium-temperature water);
fig. 5 is a schematic view of the heat exchange system of fig. 1 in a state of being supplied with heating water (high-temperature water);
FIG. 6 is a schematic view of the heat exchange system of FIG. 1 in a condition of supplying water for life and heating;
FIG. 7 is a schematic view of the heat exchange system of FIG. 1 in a condition of supplying water for life and refrigeration;
FIG. 8 is an assembled schematic view of the heat exchange system of FIG. 1;
Fig. 9 is a flowchart of a first embodiment of a heat exchange control method provided by the present invention;
fig. 10 is a flowchart of a second embodiment of a heat exchange control method provided by the present invention;
FIG. 11 is a flow chart of a third embodiment of a heat exchange control method provided by the present invention;
fig. 12 is a flowchart of a fourth embodiment of a heat exchange control method provided by the present invention;
fig. 13 is a flowchart of a fifth embodiment of a heat exchange control method according to the present invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. Also, the technical solutions of the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist and is not within the scope of protection claimed by the present invention.
The existing household independent hot water scheme mainly comprises two forms of gas wall-mounted furnaces and heat pump heating: the gas wall-mounted furnace mainly uses natural gas, so that the combustion efficiency of a small furnace is low, the heating cost is high, and the wall-mounted furnace has high noise during working; the heating effect of the heat pump system is reduced in a low-temperature environment, the comfort is easily affected by frequent defrosting, and the gas wall-mounted boiler and the heat pump are matched with a large-volume water tank, so that a large indoor area is occupied.
In view of the above, the invention provides a heat exchange system, which aims to improve the existing household hot water supply scheme, and aims to solve the problems that in the independent use of a wall-mounted boiler, the combustion efficiency is low, the heating cost is high, the noise is large, and in the independent use of a heat pump system, the heating effect is attenuated in a low-temperature environment, and the comfort is easily affected by frequent defrosting; and the gas wall-mounted furnace and the heat pump are matched with a large-volume water tank, so that the technical problem of occupying a large indoor area is solved. Referring to fig. 1 to 8, an embodiment of a heat exchange system provided by the present invention is shown, and fig. 9 to 13, an embodiment of a heat exchange control method provided by the present invention is shown.
Referring to fig. 1, the heat exchange system 100 includes a heat pump system 1, a wall-mounted boiler system 2, and a waterway heat exchange system 3; the heat pump system 1 includes a heat pump cycle 1a, and a first heat exchanger 11 provided on the heat pump cycle 1a, the first heat exchanger 11 having a heating state; the wall-mounted furnace system 2 comprises a wall-mounted furnace 21; the waterway heat exchange system 3 comprises a first heat exchange flow path 3a, a second heat exchange flow path 3b, a heat exchange working section 3c and a first switching device 32, wherein the first heat exchange flow path 3a is connected with the heat exchange working section 3c to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section 3d positioned between the input end of the first heat exchange flow path 3a and the heat exchange working section 3c, two ends of the second heat exchange flow path 3b are connected with two ends of the connecting section 3d, and the first switching device 32 is used for switching the first heat exchange flow path 3a to be communicated with one of the connecting section 3d and the second heat exchange flow path 3 b; the first heat exchange flow path 3a is connected to the first heat exchanger 11, and the second heat exchange flow path 3b is connected to the wall-mounted boiler 21.
The invention provides a heat exchange system 100, wherein a waterway heat exchange system 3 comprises a first heat exchange flow path 3a, a second heat exchange flow path 3b, a heat exchange working section 3c and a first switching device 32, wherein the first heat exchange flow path 3a is connected with the heat exchange working section 3c to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section 3d positioned between the input end of the first heat exchange flow path 3a and the heat exchange working section 3c, two ends of the second heat exchange flow path 3b are connected with two ends of the connecting section 3d, and the first switching device 32 is used for switching the first heat exchange flow path 3a to be communicated with one of the connecting section 3d and the second heat exchange flow path 3 b; that is, when the first switching device 32 is used to switch the first heat exchange flow path 3a and the connection section 3d, the water on the water path heat exchange system 3 flows through the first heat exchange flow path 3a and is heated only by the first heat exchanger 11 in the heating state; when the first switching device 32 switches the first heat exchange flow path 3a to be communicated with the second heat exchange flow path 3b, water on the waterway heat exchange system 3 sequentially flows through the first heat exchange flow path 3a and the second heat exchange flow path 3b, and sequentially passes through the first heat exchanger 11 and the wall-hanging stove 21 to be heated; in this way, the first heat exchange flow path 3a and one of the connection section 3d and the second heat exchange flow path 3b can be switched to be communicated according to the water demand of the user, so that the waterway heat exchange system 3 has different flow paths, and the heat pump system 1 and the wall-mounted boiler system 2 have different opening and closing and running states, so that the user can obtain hot water with different heating temperatures, and the experience of the user is improved; meanwhile, the heat pump system 1 and the wall-mounted boiler system 2 are arranged on the heat exchange system 100 at the same time, so that the heat pump system 1 and the wall-mounted boiler system 2 can intermittently operate and complement each other, and the energy-saving requirement can be met while the water supply is ensured to meet the requirement of a user; furthermore, since the heat pump system 1 and the wall-hanging boiler system 2 are simultaneously arranged on the heat exchange system 100, the heat exchange system 100 only needs to be provided with a common water tank, thereby reducing the occupied indoor area and further bringing convenience to the life of users.
The specific form of the first switching device 32 is not limited in the present invention, and the first switching device 32 may include a plurality of switching elements respectively provided on the first heat exchange flow path 3a, the second heat exchange flow path 3b, the heat exchange working section 3c, and the connecting section 3 d.
Specifically, in the present embodiment, the first switching device 32 includes a first three-way valve 231, and three ports of the first three-way valve 231 are respectively connected to the input end of the first heat exchange flow path 3a, one end of the connection section 3d, and one end of the second heat exchange flow path 3 b; through setting up first three-way valve 231, can switch and realize first heat transfer flow path 3a with linkage segment 3d with one of them intercommunication of second heat transfer flow path 3b, so set up, simple structure, control is simple, and the cost is lower.
Referring to fig. 2 to 7, the heat exchange working section 3c includes a first heat exchange section 3c1, a second heat exchange section 3c2, and a second switching device 33; the first heat exchange section 3c1 is provided with a first heat exchange part 31 for exchanging heat between domestic water and hot water on the first heat exchange section 3c 1; the second heat exchange section 3c2 is arranged in parallel with the first heat exchange section 3c1, and the second heat exchange section 3c2 is used for connecting an interface of a heat exchanger of the heating device 300 or the refrigerating device 400; the second switching device 33 is configured to switch the first heat exchange section 3c1 to communicate with the first heat exchange flow path 3a or the second heat exchange section 3c2 to communicate with the first heat exchange flow path 3 a; by arranging the first heat exchange section 3c1 and the second heat exchange section 3c2, different water demands of users can be met; when the user needs the domestic hot water 200, the first heat exchange section 3c1 is connected with the first heat exchange flow path 3a to provide the domestic hot water 200 for the user; when a user needs heating or refrigerating, the second heat exchange section 3c2 is connected with the first heat exchange flow path 3a to provide heating hot water or refrigerating cold water for the user; thus, the user experience is improved.
It should be noted that the specific form of the first heat exchange portion 31 is not limited in the present invention, the first heat exchange section 3c1 may itself form the first heat exchange portion 31 for directly exchanging heat with domestic water, and in this embodiment, the first heat exchange portion 31 includes the second heat exchanger 311
The present invention is not limited to the heating apparatus 300 and the cooling apparatus 400, and the heating apparatus 300 may be a floor heater, a radiator, or the like, and the cooling apparatus 400 may be a fan tray, an air cooler, or the like.
Specifically, the first heat exchange section 3c1 includes a first branch 3c11, a second branch 3c12, and a third branch 3c13, one end of the first branch 3c11 is connected to the connecting section 3d, one end of the second branch 3c12 and one end of the third branch 3c13 are connected in parallel to the other end of the first branch 3c11, the other end of the second branch 3c12 is connected to the first heat exchange flow path 3a, and the other end of the third branch 3c13 is connected to the second heat exchange flow path 3b; the heat exchange system 100 further comprises a third switching device 34, wherein the third switching device 34 is used for switching the first branch 3c11 to be communicated with one of the first heat exchange flow path 3a and the second heat exchange flow path 3b; the second heat exchanger 31 is located on the first branch 3c 11; the second switching means 33 are located on the first branch 3c 11.
When the user needs the domestic hot water 200, the first switching device 32 switches the first heat exchange flow path 3a to be communicated with the connection section 3d, the second switching device 33 switches the first heat exchange section 3c1 to be communicated, and the third switching device 34 switches the first branch 3c11 to be communicated with the first heat exchange flow path 3a so as to form the circulating heat exchange loop, at this time, the water on the waterway heat exchange system 3 is heated in the first heat exchange flow path 3a through the first heat exchanger 11, the hot water flows to the first branch 3c11 through the connection section 3d, and after heat exchange between the hot water and the domestic water through the second heat exchanger 31, the domestic water is heated, and the heat exchanged water flows back to the first heat exchange flow path 3a from the first branch 3c11 through the second branch 3c 12; when the user needs high-temperature hot water, the first switching device 32 switches the first heat exchange flow path 3a to be communicated with the second heat exchange flow path 3b, the second switching device 33 switches the first heat exchange section 3c1 to be communicated, and the third switching device 34 switches the first branch 3c11 to be communicated with the first heat exchange flow path 3a so as to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system 3 flows through the first heat exchange flow path 3a and the second heat exchange flow path 3b in sequence, and is heated by the first heat exchanger 11 and the wall-mounted boiler 21 in sequence, the hot water flows to the first branch path 3c11, after passing through the second heat exchanger 31 and exchanging heat with domestic water, the domestic water is heated, and the heat exchanged water flows from the first branch path 3c11, through the second branch path 3c12, and flows back to the first heat exchange flow path 3a; thus, circulation of the circulating heat exchange loop is realized; meanwhile, according to the water demand of a user, the first heat exchange flow path 3a is switched to be communicated with one of the connecting section 3d and the second heat exchange flow path 3b, so that the waterway heat exchange system 3 has different flow paths, and the heat pump system 1 and the wall-mounted boiler system 2 have different opening and closing and running states, hot water with different heating temperatures can be obtained by the user, and the experience of the user is improved.
When the user needs heating, the first switching device 32 switches the first heat exchange flow path 3a to be communicated with the connecting section 3d, the second switching device 33 switches the second heat exchange section 3c2 to be communicated, the third switching device 34 switches the first branch 3c11 to be disconnected from the first heat exchange flow path 3a, and the second heat exchange section 3c2 is connected with the first heat exchange flow path 3a to form the circulating heat exchange loop, at this time, water on the waterway heat exchange system 3 is heated by the first heat exchanger 11 in the first heat exchange flow path 3a, hot water flows to the second heat exchange section 3c2 and flows back to the first heat exchange flow path 3a after the heat exchanger of the heating device 300 provides heating for the user; when the user needs high-temperature warm air, the first switching device 32 switches the first heat exchange flow path 3a to be communicated with the second heat exchange flow path 3b, the second switching device 33 switches the second heat exchange section 3c2 to be communicated, the third switching device 34 switches the first branch 3c11 to be disconnected from the first heat exchange flow path 3a, and the second heat exchange section 3c2 is connected with the first heat exchange flow path 3a so as to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system 3 flows through the first heat exchange flow path 3a and the second heat exchange flow path 3b in sequence, is heated by the first heat exchanger 11 and the wall-hanging stove 21 in sequence, flows to the second heat exchange section 3c2, flows to the heat exchanger of the heating device 300 to provide heating for a user, and flows back to the first heat exchange flow path 3a; thus, circulation of the circulating heat exchange loop is realized; meanwhile, according to the heating requirement of a user, the first heat exchange flow path 3a is switched to be communicated with one of the connecting section 3d and the second heat exchange flow path 3b, so that the waterway heat exchange system 3 has different flow paths, and the heat pump system 1 and the wall-mounted boiler system 2 have different opening and closing and running states, so that the user can obtain heating at different temperatures, and the experience of the user is improved.
When the user needs both the domestic hot water 200 and the heating, the first switching device 32 switches the first heat exchange flow path 3a to communicate with the connection section 3d, the second switching device 33 switches the second heat exchange section 3c2 to communicate, and the third heat exchanger 12 switches the first branch 3c11 to communicate with the second heat exchange flow path 3 b; at this time, the water on the waterway heat exchange system 3 flows to the second heat exchange section 3c2 after the first heat exchange flow path 3a is heated by the first heat exchanger 11, and flows to the heat exchanger of the heating device 300 to provide heating for the user, and then flows back to the first heat exchange flow path 3a to form a first circulation heat exchange loop; part of water on the waterway heat exchange system 3 is heated by the wall-mounted boiler 21 in the second heat exchange flow path 3b, hot water flows to the first branch path 3c11, after passing through the second heat exchanger 31 and exchanging heat with domestic water, the domestic water is heated, and the exchanged water flows from the first branch path 3c11, through the third branch path 3c13 and flows back to the second heat exchange flow path 3b to form a second circulating heat exchange loop; thus, the circulation of the first circulating heat exchange loop and the second circulating heat exchange loop is realized; meanwhile, the first switching device 32, the second switching device 33 and the third switching device 34 can be controlled to act according to the hot water heating requirement of the user, so that the waterway heat exchange system 3 has different circulation paths, and the heat pump system 1 and the wall-mounted boiler system 2 have different opening and closing and running states, so that the user can obtain hot water and heating at the same time, and the experience of the user is improved.
The specific form of the third switching device 34 is not limited by the present invention, and the third switching device 34 may include two switching elements disposed on the first branch 3c11 and the second branch 3c12, respectively.
Specifically, in the present embodiment, the third switching device 34 includes a second three-way valve 341 and/or a third three-way valve 342, where: three interfaces of the second three-way valve 341 are respectively connected with the second branch 3c12, the second heat exchange section 3c2 and the first heat exchange flow path 3a; the third three-way valve 342 is disposed on the second heat exchange flow path 3b, and one interface thereof is connected to the third branch 3c13; in this embodiment, the third switching device 34 may be the second three-way valve 341 disposed between the second branch 3c12, the second heat exchange section 3c2, and the first heat exchange flow path 3a, or the third three-way valve 342 disposed in the second heat exchange flow path 3b and having one interface connected to the third branch 3c13; the second three-way valve 341 and the third three-way valve 342 may be provided at the same time; through setting up second three-way valve 341 with third three-way valve 342 realizes the difference the circulation route of circulation heat transfer circuit, not only simple structure, control is convenient, can satisfy the different demands of user moreover.
In the present embodiment, the second switching device 33 includes a first shut-off valve 331 provided on the first heat exchange section 3c 1; the first heat exchange section 3c1 and the second heat exchange section 3c2 can be switched on and off by the first stop valve 331, so that the structure is simple, the control is convenient, and the cost is low.
In the present invention, the first heat exchanger 11 also has a cooling state; the heat exchange system 100 further includes a fourth switching device 4 and a refrigerant branch 1c, two ends of the refrigerant branch 1c are respectively connected to a refrigerant connection section 1b of the heat pump cycle 1a, and the fourth switching device 4 is configured to switch the heat pump cycle 1a to be communicated with one of the refrigerant connection section 1b and the refrigerant branch 1c, so as to correspondingly switch the first heat exchanger 11 between the heating state and the cooling state; the second heat exchange part 12 is arranged on the refrigerant branch 1c, and the second heat exchange part 12 is used for heat exchange and heating of domestic water.
It should be noted that, the specific form of the second heat exchange portion 12 is not limited in the present invention, and the refrigerant branch 1c may itself form the second heat exchange portion 12 to directly exchange heat with domestic water, and in this embodiment, the second heat exchange portion 12 includes the third heat exchanger 121.
When the user needs both the domestic hot water 200 and the refrigeration, the first switching device 32 switches the first heat exchange flow path 3a to communicate with the connection section 3d, the second switching device 33 switches the second heat exchange section 3c2 to communicate, the fourth switching device 4 switches the heat pump cycle 1a to communicate with the refrigerant branch 1c, and the first heat exchanger 11 switches to the refrigeration state; at this time, the refrigerant flows through the third heat exchanger 12 from the refrigerant branch 1c, exchanges heat with the domestic water, heats the domestic water, and flows into the first heat exchanger 11, the first heat exchanger 11 is in the refrigeration state at this time and is used for refrigerating hydration heat on the first heat exchange flow path 3a, the refrigerant flows back from the first heat exchanger 11 to form the heat pump circulation loop 1a, meanwhile, cold water flows through the connecting section 3d from the first heat exchange flow path 3a, flows to the second heat exchange section 3c2, flows through the heat exchanger of the refrigeration equipment 400 to provide cold air for a user, and flows back to the first heat exchange flow path 3a, so as to form the circulation heat exchange loop; in this way, the circulation of the heat pump cycle 1a and the circulation heat exchange circuit is achieved; meanwhile, the first switching device 32, the second switching device 33 and the third switching device 34 may be controlled to act according to the hot water cooling requirement of the user, so that the waterway heat exchange system 3 has different flow paths, and the heat pump system 1 and the wall-mounted boiler system 2 have different opening and closing and running states, so that the user can obtain hot water and cold air at the same time, and further experience of the user is improved.
The present invention is not limited to the specific form of the fourth switching device 4, and the fourth switching device 4 may include two switching elements respectively disposed on the refrigerant connection section 1b and the second refrigerant flow path.
Specifically, in the present embodiment, the fourth switching device 4 includes a first throttling element 41 and/or a second throttling element 42, wherein: the first throttling element 41 is positioned on the refrigerant connecting section 1 b; the second throttling element 42 is located in the second refrigerant flow path; that is, the fourth switching device 4 may be the first throttling element 41 provided in the refrigerant connection section 1b, or the second throttling element 42 provided in the second refrigerant flow path; the first throttling element 41 and the second throttling element 42 on the refrigerant connection section 1b and the second refrigerant flow path may be provided at the same time; by providing the first throttling element 41 and the second throttling element 42, different circulation paths of the heat pump circulation loop 1a are realized, and the heat pump circulation loop is simple in structure, convenient to control and capable of meeting different requirements of users.
In order to make the structural arrangement of the heat exchange system 100 more compact, in the present invention, the heat exchange system 100 further includes a heat storage tank 5, where the heat storage tank 5 includes a housing and a heat storage portion, a cavity is formed in the housing, and the heat storage portion is disposed in the cavity, so as to store heat, so that when the heat pump system 1 and the wall-hanging stove system 2 stop running, domestic water can be heated; wherein the second heat exchanger 31 and the third heat exchanger 12 are both disposed in the cavity; in this way, the structural arrangement of the heat exchange system 100 is more compact, the occupied space of the heat exchange system 100 is reduced, and the user experience is improved; meanwhile, the protection effect on the second heat exchanger 31 and the third heat exchanger 12 can be achieved, and the service lives of the second heat exchanger 31 and the third heat exchanger 12 are prolonged; furthermore, the heat released by the second heat exchanger 31 and the third heat exchanger 12 during heat exchange is absorbed by the heat storage portion, and when the heat pump system 1 and the wall-mounted boiler system 2 stop running, the heat storage portion releases heat to heat domestic water, so as to meet the energy-saving requirement.
In the present invention, the water path heat exchange system 3 further includes a water pump 35 and an expansion tank 36, the water pump 35 and the expansion tank 36 are disposed on the first heat exchange flow path 3a and upstream of the first heat exchanger 11, and the water pump 35 and the expansion tank 36 are disposed in parallel.
In the present invention, the waterway heat exchange system 3 further includes a fifth switching device 37, the fifth switching device 37 includes a second stop valve 371 and/or a third stop valve 372, wherein: the second stop valve 371 is disposed in the second heat exchange flow path 3b and is located at a water inlet of the wall-mounted boiler 21; the third stop valve 372 is provided in the second heat exchange flow path 3b and is located at the water outlet of the wall-mounted boiler 21; that is, the fifth switching device 37 may be the second shut-off valve 371 provided in the second heat exchanging channel 3b and located at the water inlet of the wall-hanging stove 21, or the third shut-off valve 372 provided in the second heat exchanging channel 3b and located at the water outlet of the wall-hanging stove 21; the second stop valve 371 and the third stop valve 372 of the water inlet of the wall-mounted boiler 21 and the water outlet of the wall-mounted boiler 21 may be provided at the same time; through setting up second stop valve 371 with the third stop valve 372 realizes hanging stove 21 with the break-make of second heat transfer flow path 3b, simple structure, control is convenient.
Based on the above heat exchange system, the present invention further provides a heat exchange control method, and referring to fig. 9 to 13, fig. 9 to 13 are specific embodiments of the heat exchange control method provided by the present invention.
Fig. 9 is a flowchart of a first embodiment of a heat exchange control method provided by the present invention.
The heat exchange system further comprises a heat exchange working section, wherein the heat exchange working section comprises a first heat exchange section, a second switching device and a third switching device, and the first heat exchange section further comprises a first branch, a second branch and a third branch;
the heat exchange control method comprises the following steps:
s10: receiving user input information, wherein the user input information comprises a user demand mode and a demand water temperature parameter;
s20: and adjusting control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information.
The invention provides a heat exchange system, which comprises a water path heat exchange system, a water path heat exchange system and a water path heat exchange system, wherein the water path heat exchange system comprises a first heat exchange flow path, a second heat exchange flow path, a heat exchange working section and a first switching device, the first heat exchange flow path is connected with the heat exchange working section to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section positioned between the input end of the first heat exchange flow path and the heat exchange working section, two ends of the second heat exchange flow path are connected with two ends of the connecting section, and the first switching device is used for switching the first heat exchange flow path to be communicated with one of the connecting section and the second heat exchange flow path; that is, when the first switching device is used for switching the first heat exchange flow path and the connecting section, the water on the waterway heat exchange system flows on the first heat exchange flow path and is heated only by virtue of the fact that the first heat exchanger is in a heating state; when the first switching device switches the communication between the first heat exchange flow path and the second heat exchange flow path, water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path and sequentially passes through the first heat exchanger and the wall-mounted furnace for heating; in this way, the first heat exchange flow path is switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, so that the waterway heat exchange system has different flow paths, and the heat pump system and the wall-mounted boiler system have different opening and closing and running states, and therefore the user can obtain hot water with different heating temperatures, and experience of the user is improved; simultaneously, the heat pump system and the wall-mounted boiler system are arranged on the heat exchange system, so that the heat pump system and the wall-mounted boiler system can intermittently run and complement each other, and the energy-saving requirement can be met while the water supply is ensured to meet the requirement of a user; furthermore, because the heat pump system and the wall-mounted boiler system are arranged on the heat exchange system at the same time, the heat exchange system only needs to be provided with a common water tank, so that the occupied indoor area is reduced, and convenience is brought to the life of users.
In this embodiment, the first switching device includes a first three-way valve, and three ports of the first three-way valve are respectively connected to an input end of the first heat exchange flow path, one end of the connection section, and one end of the second heat exchange flow path; the third switching device comprises a second three-way valve 341 and a third three-way valve, and three interfaces of the second three-way valve are respectively connected with the second branch, the second heat exchange section and the first heat exchange flow path; the third three-way valve is arranged on the second heat exchange flow path, and one interface of the third three-way valve is connected with the third branch; the second switching device comprises a first stop valve arranged on the first heat exchange section; the first three-way valve is arranged, so that the first heat exchange flow path can be switched to be communicated with one of the connecting section and the second heat exchange flow path; by arranging the second three-way valve and the third three-way valve, different circulation paths of the circulating heat exchange loop are realized, so that the circulating heat exchange system is simple in structure, convenient to control and capable of meeting different requirements of users; the first heat exchange section and the second heat exchange section can be switched on and off through the opening and closing of the first stop valve, and the device is simple in structure, convenient to control and low in cost.
Fig. 10 is a flowchart of a second embodiment of a heat exchange control method provided by the present invention.
The first heat exchange section is provided with a second heat exchanger for exchanging heat between domestic water and hot water on the first heat exchange section;
the user demand mode includes a hot water mode, and the demand water temperature parameter includes a demand hot water temperature parameter;
step S20 of adjusting control policies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system according to the user input information includes:
s201: comparing the required hot water temperature parameter with a preset hot water temperature parameter;
s202: when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system to work according to a first control program;
s203: when the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
In this embodiment, when the user needs domestic hot water and the user needs middle-temperature hot water, the required hot water temperature parameter is smaller than the preset hot water temperature parameter, and the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system are controlled to work according to a first control program; when a user needs high-temperature hot water, the required hot water temperature parameter is larger than or equal to the preset hot water temperature parameter, and the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system are controlled to work according to a second control program; therefore, the first heat exchange flow path is communicated with one of the connecting section and the second heat exchange flow path, so that the waterway heat exchange system has different flow paths, and the heat pump system and the wall-mounted boiler system have different opening and closing and running states, and a user can obtain hot water with different heating temperatures, and experience of the user is improved.
Specifically, when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, the step S202 of controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to operate according to a first control program includes:
S2021: controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
s2022: controlling the second switching device to switch the communication of the first heat exchange section;
s2023: controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
s2024: controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
s2025: acquiring a first actual water temperature parameter of the first heat exchange section;
s2026: calculating a water temperature difference delta T according to the first actual water temperature parameter and the required hot water temperature parameter 1 ；
S2027: when DeltaT 1 When the water temperature is larger than a first preset water temperature, controlling the heat pump system to continuously operate at the first power;
s2028: when the second preset water temperature is less than or equal to DeltaT 1 The method comprises the steps of controlling the heat pump system to operate at a second power when the temperature is smaller than or equal to a first preset water temperature, wherein the second power is smaller than the first power;
s2029: when DeltaT 1 And (3) controlling the heat pump system to stop running when the second preset water temperature is less than the second preset water temperature.
In this embodiment, when the user needs middle-temperature hot water, the required hot water temperature parameter is smaller than the preset hot water temperature parameter, the first switching device switches the first heat exchange flow path to be communicated with the connection section, the second switching device switches the first heat exchange section to be communicated, and the third switching device switches the first branch to be communicated with the first heat exchange flow path so as to form the circulating heat exchange loop, at this time, water on the waterway heat exchange system is heated in the first heat exchange flow path through the first heat exchanger, hot water flows to the first branch through the connection section, after heat exchange between the second heat exchanger and the domestic water, the domestic water is heated, and the heat exchanged water flows from the first branch to the second branch and flows back to the first heat exchange flow path; meanwhile, according to a first actual water temperature parameter of the first heat exchange section, the heat pump system is controlled to alternately operate with the first power and the second power, so that the first heat exchange flow path can be switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, and the waterway heat exchange system is provided with different flow paths; and the water supply is ensured to meet the requirements of users, meanwhile, the energy-saving requirements can be met, and the experience of the users is improved.
It should be noted that the specific values of the first preset water temperature and the second preset water temperature are not limited in the present invention, specifically, in the present embodiment, the first preset water temperature is set to 3 ℃, the second preset water temperature is set to 1 ℃, when Δt 1 When the temperature is more than 3 ℃, the difference between the first actual water temperature parameter of the first heat exchange section and the water temperature parameter of the required hot water is larger, and the heat pump system is controlled to continuously operate at the first power, so that the heat pump system can continuously heat the water on the first heat exchange flow path, and the water temperature on the first heat exchange flow path is further improved; when 1 ℃ is less than or equal to delta T 1 When the temperature is less than or equal to 3 ℃, the first actual water temperature parameter of the first heat exchange section is close to the required hot water temperature parameter, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; in this way, when the first actual water temperature parameter of the first heat exchange section is close to the required hot water temperature parameter, the operation power of the heat pump system is reduced, and on one hand, the water on the first heat exchange flow path can be continuously added The heat meets the water use requirement of a user, and on the other hand, the energy-saving requirement can be met; when DeltaT 1 When the temperature is lower than 1 ℃, the heat pump system is controlled to stop running, and as the heat released by the second heat exchanger during heat exchange is absorbed by the heat storage part, when the heat pump system and the wall-mounted boiler system stop running, the heat storage part releases heat to heat domestic water, so that the water demand of a user can be met, and the energy-saving demand can also be met.
Specifically, when the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the step S203 of controlling the first switching device, the heat pump system and the wall-mounted boiler system to work according to a second control program includes:
s2031: controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
s2032: controlling the second switching device to switch the communication of the first heat exchange section;
s2033: controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
s2034: controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
s2035: acquiring a second actual water temperature parameter of the first heat exchange section;
S2036: calculating a water temperature difference delta T according to the second actual water temperature parameter and the required hot water temperature parameter 2 ；
S2037: when DeltaT 2 Controlling the heat pump system and the wall-mounted boiler system to continuously operate at the first power;
s2038: when the second preset water temperature is less than or equal to DeltaT 2 Controlling the wall-mounted boiler system to stop running and controlling the heat pump system to run at a second power, wherein the second power is smaller than the first power;
s2039: when DeltaT 2 And controlling the heat pump system to stop running when the temperature is smaller than or equal to a second preset water temperature.
In this embodiment, when the user needs domestic hot water, the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the first switching device switches the first heat exchange flow path to be communicated with the second heat exchange flow path, the second switching device switches the first heat exchange section to be communicated, and the third switching device switches the first branch to be communicated with the first heat exchange flow path so as to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path, is sequentially heated by the first heat exchanger and the wall-mounted boiler, flows to the first branch, exchanges heat with domestic water through the second heat exchanger, heats the domestic water, and flows back to the first heat exchange flow path from the first branch through the second branch; meanwhile, according to a second actual water temperature parameter of the first heat exchange section, the heat pump system and the wall-mounted boiler system are controlled to alternately operate with the first power and the second power, so that the first heat exchange flow path can be switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, and the waterway heat exchange system is provided with different flow paths; and the water supply is ensured to meet the requirements of users, meanwhile, the energy-saving requirements can be met, and the experience of the users is improved.
It should be noted that the specific values of the first preset water temperature and the second preset water temperature are not limited in the present invention, specifically, in the present embodiment, the first preset water temperature is set to 3 ℃, the second preset water temperature is set to 1 ℃, when Δt 2 When the temperature is more than 3 ℃, the difference between the second actual water temperature parameter of the first heat exchange section and the water temperature parameter of the required hot water is larger, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power, so that the heat pump system and the wall-mounted boiler system can continuously heat water on the first heat exchange flow path and the second heat exchange flow path, and the water temperature on the first heat exchange flow path is further improved; when 1 ℃ is less than or equal to delta T 2 When the temperature is lower than or equal to 3 ℃, the second actual water temperature parameter of the first heat exchange section is close to the required hot water temperature parameterThe wall-mounted boiler system is controlled to stop running, and the heat pump system is controlled to run at a second power, wherein only the heat pump system runs at the second power, and the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; when the second actual water temperature parameter of the first heat exchange section is close to the required hot water temperature parameter, only the heat pump system is started, and the running power of the heat pump system is reduced, so that on one hand, the water on the first heat exchange flow path can be continuously heated, the water consumption requirement of a user is met, and on the other hand, the energy saving requirement can be met; when DeltaT 2 When the temperature is lower than 1 ℃, the heat pump system is controlled to stop running, and as the heat released by the second heat exchanger during heat exchange is absorbed by the heat storage part, when the heat pump system and the wall-mounted boiler system stop running, the heat storage part releases heat to heat domestic water, so that the water demand of a user can be met, and the energy-saving demand can also be met.
That is, when the user needs middle-temperature hot water, the first switching device switches the first heat exchange flow path to be communicated with the connecting section, the second switching device switches the first heat exchange section to be communicated, the third switching device switches the first branch to be communicated with the first heat exchange flow path so as to form the circulating heat exchange loop, at this time, water on the waterway heat exchange system is heated in the first heat exchange flow path through the first heat exchanger, hot water flows to the first branch through the connecting section, after heat exchange is carried out between the second heat exchanger and the domestic water, the domestic water is heated, and the heat exchanged water flows back to the first heat exchange flow path from the first branch through the second branch; when the user needs high-temperature hot water, the first switching device switches the first heat exchange flow path to be communicated with the second heat exchange flow path, the second switching device switches the first heat exchange section to be communicated, and the third switching device switches the first branch to be communicated with the first heat exchange flow path so as to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path, is sequentially heated by the first heat exchanger and the wall-mounted boiler, flows to the first branch, exchanges heat with domestic water through the second heat exchanger, heats the domestic water, and flows back to the first heat exchange flow path from the first branch through the second branch; thus, circulation of the circulating heat exchange loop is realized; meanwhile, the first heat exchange flow path is switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, so that the waterway heat exchange system has different flow paths, the heat pump system and the wall-mounted boiler system have different opening and closing and running states, and therefore the user can obtain hot water with different heating temperatures, and experience of the user is improved.
Fig. 11 is a flowchart of a third embodiment of a heat exchange control method provided by the present invention.
The second heat exchange section is used for connecting an interface of a heat exchanger of heating or refrigerating equipment;
the user demand mode includes a heating mode, and the demand water temperature parameter includes a demand heating water temperature parameter;
the step S20 of adjusting the control policies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system according to the user input information includes:
s201': comparing the required heating water temperature parameter with a preset heating water temperature parameter;
s202': when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a first control program;
s203': when the required heating water temperature parameter is greater than or equal to the preset heating water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
In this embodiment, when the user needs to heat, and when the user needs to warm middle warmer, the required heating water temperature parameter is smaller than the preset heating water temperature parameter, and the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system are controlled to work according to a first control program; when the user needs to be high Wen Nuanqi, the required heating water temperature parameter is larger than or equal to the preset heating water temperature parameter, and the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system are controlled to work according to a second control program; therefore, the first heat exchange flow path is communicated with one of the connecting section and the second heat exchange flow path, so that the waterway heat exchange system has different flow paths, the heat pump system and the wall-mounted furnace system have different opening and closing and running states, a user can obtain heating air with different temperatures, and the experience of the user is improved.
Specifically, when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, the step S202' of controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system to operate according to a first control program includes:
S2021': controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
s2022': controlling the second switching device to switch the second heat exchange section to be communicated;
s2023': the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
s2024': controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
s2025': acquiring a third actual water temperature parameter of the second heat exchange section;
s2026': calculating a water temperature difference delta T according to the third actual water temperature parameter and the required heating water temperature parameter 3 ；
S2027': when DeltaT 3 When the third preset water temperature is more than the third preset water temperature, controlling the heat pump system to continuously operate at the first power;
s2028': when the fourth preset water temperature is less than or equal to delta T 3 The temperature of the water is smaller than or equal to a third preset water temperature, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power;
s2029': when DeltaT 3 And < a fourth preset water temperature, controlling the heat pump system to operate at a third power, wherein the third power is less than the second power.
In this embodiment, when the user needs heating, when the user needs middle warmer air, the first switching device switches the first heat exchange flow path to be communicated with the connection section, the second switching device switches the second heat exchange section to be communicated, the third switching device switches the first branch to be disconnected from the first heat exchange flow path, and the second heat exchange section is connected with the first heat exchange flow path to form the circulation heat exchange loop, at this time, water on the waterway heat exchange system is heated by the first heat exchanger in the first heat exchange flow path, and the hot water flows to the second heat exchange section and flows back to the first heat exchange flow path after the heat exchanger of the heating device provides heating for the user; meanwhile, according to a third actual water temperature parameter of the second heat exchange section, the heat pump system is controlled to alternately operate with the first power and the second power, so that the first heat exchange flow path can be switched to be communicated with one of the connecting section and the second heat exchange flow path according to the water demand of a user, and the waterway heat exchange system is provided with different flow paths; and the water supply is ensured to meet the requirements of users, meanwhile, the energy-saving requirements can be met, and the experience of the users is improved.
It should be noted that the specific values of the third preset water temperature and the fourth preset water temperature are not limited in the present invention, specifically, in the present embodiment, the third preset water temperature is set to 3 ℃, and the fourth preset water temperatureThe temperature is set to 1 ℃, when delta T 3 When the temperature is more than 3 ℃, the difference between the third actual water temperature parameter of the second heat exchange section and the required heating water temperature parameter is larger, and the heat pump system is controlled to continuously operate at the first power, so that the heat pump system can continuously heat the water on the first heat exchange flow path, and the water temperature on the first heat exchange flow path is further improved; when 1 ℃ is less than or equal to delta T 3 When the temperature is less than or equal to 3 ℃, the third actual water temperature parameter of the second heat exchange section is close to the required heating water temperature parameter, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; when the third actual water temperature parameter of the second heat exchange section is close to the required heating water temperature parameter, the running power of the heat pump system is reduced, so that on one hand, water on the first heat exchange flow path can be continuously heated, the water consumption requirement of a user is met, and on the other hand, the energy saving requirement can be met; when DeltaT 3 When the temperature is less than 1 ℃, the heat pump system is controlled to operate at the third power so as to ensure the water temperature on the first heat exchange flow path, so that the water consumption requirement of a user can be met, and the energy saving requirement can also be met.
Specifically, when the required heating water temperature parameter is greater than or equal to the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a second control program, the method includes the following step S203' of:
s2031': controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
s2032': controlling the second switching device to switch the second heat exchange section to be communicated;
s2033': the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
s2034': controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
s2035': acquiring a fourth actual water temperature parameter of the second heat exchange section;
s2036': calculating a water temperature difference delta T according to the fourth actual water temperature parameter and the required heating water temperature parameter 4 ；
S2037': when DeltaT 4 The third preset water temperature is larger than the third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power;
s2038': when the fourth preset water temperature is less than or equal to delta T 4 The temperature of the water is smaller than or equal to a third preset water temperature, the wall-mounted boiler system is controlled to stop running, and the heat pump system is controlled to run at a second power, wherein the second power is smaller than the first power;
s2039': when DeltaT 4 And < a fourth preset water temperature, controlling the heat pump system to operate at a third power, wherein the third power is less than the second power.
In this embodiment, when the user needs high-temperature warm air, the first switching device switches the first heat exchange flow path to be communicated with the second heat exchange flow path, the second switching device switches the second heat exchange section to be communicated, the third switching device switches the first branch to be disconnected from the first heat exchange flow path, and the second heat exchange section is connected with the first heat exchange flow path to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path, is sequentially heated by the first heat exchanger and the wall-mounted boiler, flows to the second heat exchange section, flows to the heat exchanger of the heating equipment to provide heating for a user, and flows back to the first heat exchange flow path; thus, circulation of the circulating heat exchange loop is realized; meanwhile, the first heat exchange flow path is switched to be communicated with one of the connecting section and the second heat exchange flow path according to heating requirements of users, so that the waterway heat exchange system has different flow paths, the heat pump system and the wall-mounted boiler system have different opening and closing and running states, users can obtain heating at different temperatures, and experience of the users is improved.
It should be noted that the specific values of the third preset water temperature and the fourth preset water temperature are not limited in the present invention, specifically, in the present embodiment, the third preset water temperature is set to 3 ℃, the fourth preset water temperature is set to 1 ℃, when Δt 4 When the temperature is more than 3 ℃, the difference between the fourth actual water temperature parameter of the second heat exchange section and the required heating water temperature parameter is larger, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power, so that the heat pump system and the wall-mounted boiler system can continuously heat water on the first heat exchange flow path and the second heat exchange flow path, and the water temperature on the first heat exchange flow path is further improved; when 1 ℃ is less than or equal to delta T 4 When the temperature is less than or equal to 3 ℃, the fourth actual water temperature parameter of the second heat exchange section is close to the required heating water temperature parameter, the wall-mounted boiler system is controlled to stop running, and the heat pump system is controlled to run at a second power, at the moment, only the heat pump system runs at the second power, wherein the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; when the fourth actual water temperature parameter of the second heat exchange section is close to the required heating water temperature parameter, only the heat pump system is started, and the running power of the heat pump system is reduced, so that on one hand, the water on the first heat exchange flow path can be continuously heated, the water consumption requirement of a user is met, and on the other hand, the energy saving requirement can be met; when DeltaT 4 When the temperature is less than 1 ℃, the heat pump system is controlled to operate at the third power so as to ensure the water temperature on the first heat exchange flow path, so that the water consumption requirement of a user can be met, and the energy saving requirement can also be met.
That is, when the user needs heating, when the user needs middle warmer air, the first switching device switches the first heat exchange flow path to be communicated with the connecting section, the second switching device switches the second heat exchange section to be communicated, the third switching device switches the first branch to be disconnected from the first heat exchange flow path, the second heat exchange section is connected with the first heat exchange flow path to form the circulating heat exchange loop, at this time, water on the waterway heat exchange system is heated by the first heat exchanger in the first heat exchange flow path, the hot water flows to the second heat exchange section and flows back to the first heat exchange flow path after the heat exchanger of the heating equipment provides heating for the user; when the user needs high-temperature warm air, the first switching device switches the first heat exchange flow path to be communicated with the second heat exchange flow path, the second switching device switches the second heat exchange section to be communicated, the third switching device switches the first branch to be disconnected from the first heat exchange flow path, and the second heat exchange section is connected with the first heat exchange flow path so as to form the circulating heat exchange loop; at this time, the water on the waterway heat exchange system sequentially flows through the first heat exchange flow path and the second heat exchange flow path, is sequentially heated by the first heat exchanger and the wall-mounted boiler, flows to the second heat exchange section, flows to the heat exchanger of the heating equipment to provide heating for a user, and flows back to the first heat exchange flow path; thus, circulation of the circulating heat exchange loop is realized; meanwhile, the first heat exchange flow path is switched to be communicated with one of the connecting section and the second heat exchange flow path according to heating requirements of users, so that the waterway heat exchange system has different flow paths, the heat pump system and the wall-mounted boiler system have different opening and closing and running states, users can obtain heating at different temperatures, and experience of the users is improved.
Fig. 12 is a flowchart of a fourth embodiment of a heat exchange control method provided by the present invention.
The user demand mode includes a hot water heating mode, and the demand water temperature parameter includes a demand hot water temperature parameter and a demand heating water temperature parameter;
step S20 of adjusting control policies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system according to the user input information includes:
s201": controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
s202': controlling the second switching device to switch the second heat exchange section to be communicated;
s203": controlling the third heat exchanger to switch the first branch to be communicated with the second heat exchange flow path;
s204": controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
s205": acquiring a fifth actual water temperature parameter of the first branch and a sixth actual water temperature parameter of the second heat exchange section;
s206': comparing the fifth actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the wall-mounted boiler system;
s207": and comparing the sixth actual water temperature parameter with the required heating water temperature parameter, and adjusting a control strategy of the heat pump system.
When a user needs domestic hot water and heating at the same time, the first switching device switches the first heat exchange flow path to be communicated with the connecting section, the second switching device switches the second heat exchange section to be communicated, and the third heat exchanger switches the first branch to be communicated with the second heat exchange flow path; at this time, the water on the waterway heat exchange system is heated by the first heat exchanger in the first heat exchange flow path, the hot water flows to the second heat exchange section and flows to the heat exchanger of the heating equipment to provide heating for a user, and then flows back to the first heat exchange flow path to form a first circulating heat exchange loop; part of water on the waterway heat exchange system is heated in the second heat exchange flow path through the wall-mounted furnace, hot water flows to the first branch path, after passing through the second heat exchanger and exchanging heat with domestic water, the domestic water is heated, and the exchanged water flows from the first branch path, through the third branch path and flows back to the second heat exchange flow path to form a second circulating heat exchange loop; thus, the circulation of the first circulating heat exchange loop and the second circulating heat exchange loop is realized; meanwhile, according to the comparison result of the fifth actual water temperature parameter and the required hot water temperature parameter, the sixth actual water temperature parameter and the required heating water temperature parameter, the heat pump system and the wall-mounted boiler system are controlled to have different opening and closing and running states, so that a user can obtain hot water and heating at the same time, and the experience of the user is improved.
It should be noted that, the step S206 "of comparing the fifth actual water temperature parameter with the required hot water temperature parameter and adjusting the control strategy of the wall-mounted boiler system, and the step S207" of comparing the sixth actual water temperature parameter with the required heating water temperature parameter and adjusting the control strategy of the heat pump system do not have a certain precedence relationship.
Specifically, the step S206″ of comparing the fifth actual water temperature parameter with the required hot water temperature parameter and adjusting the control strategy of the wall-mounted boiler system includes:
s2061": calculating a water temperature difference delta T according to the sixth actual water temperature parameter and the required hot water temperature parameter 6 ；
S2062": when DeltaT 5 The water temperature is not less than a fifth preset water temperature, and the wall hanging stove system is controlled to be closed;
s2063": when DeltaT 5 And (3) controlling the heat pump system and the wall-mounted boiler system to continuously operate at the first power.
It should be noted that the specific value of the fifth preset water temperature is not limited in the present invention, specifically, in the present embodiment, the fifth preset water temperature is set to 0 ℃, when Δt 6 When the temperature is more than or equal to 0 ℃, the sixth actual water temperature parameter reaches the required hot water temperature parameter, the wall-mounted boiler system is controlled to be closed, and as the heat released by the second heat exchanger during heat exchange is absorbed by the heat storage part, when the heat pump system and the wall-mounted boiler system stop running, the heat storage part releases heat to heat domestic water, so that the water requirement of a user can be met, and the energy saving requirement can also be met; when DeltaT 6 When the temperature is lower than 0 ℃, the sixth actual water temperature parameter does not reach the required hot water temperature parameter, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power, so that the heat pump system and the wall-mounted boiler system can continuously heat water on the first heat exchange flow path and the second heat exchange flow path, and furtherAnd increasing the water temperature on the first heat exchange flow path to meet the water demand of a user.
Specifically, the step S207″ of comparing the sixth actual water temperature parameter with the required heating water temperature parameter, and adjusting the control strategy of the heat pump system includes:
s2071": calculating a water temperature difference delta T according to the fifth actual water temperature parameter and the required heating water temperature parameter 5 ；
S2072": when DeltaT 5 The third preset water temperature is larger than the third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power;
s2073": when the fourth preset water temperature is less than or equal to delta T 5 The temperature of the water is smaller than or equal to a third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to operate at a second power, wherein the second power is smaller than the first power;
s2074": when DeltaT 5 And controlling the heat pump system and the wall-mounted boiler system to operate at a third power, wherein the third power is smaller than the second power.
It should be noted that the specific values of the third preset water temperature and the fourth preset water temperature are not limited in the present invention, specifically, in the present embodiment, the third preset water temperature is set to 3 ℃, the fourth preset water temperature is set to 1 ℃, when Δt 5 When the temperature is more than 3 ℃, the difference between the fifth actual water temperature parameter and the required heating water temperature parameter is larger, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power, so that the heat pump system and the wall-mounted boiler system can continuously heat water on the first heat exchange flow path and the second heat exchange flow path, and the water temperature on the first heat exchange flow path and the second heat exchange flow path is further improved; when 1 ℃ is less than or equal to delta T 5 When the temperature is less than or equal to 3 ℃, the fifth actual water temperature parameter is close to the required heating water temperature parameter, and the heat pump system and the wall-mounted boiler system are controlled to operate at a second power, wherein the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; therefore, when the fifth actual water temperature parameter is close to the required heating water temperature parameter, the running power of the heat pump system and the wall-mounted boiler system is reduced, on one hand, the water on the first heat exchange flow path and the second heat exchange flow path can be continuously heated, the water requirement of a user is met, and on the other hand, the energy saving requirement can be met; when DeltaT 5 When the temperature is less than 1 ℃, the heat pump system and the wall-mounted boiler system are controlled to operate at third power so as to ensure the water temperatures on the first heat exchange flow path and the second heat exchange flow path, thereby not only meeting the water consumption requirement of users, but also meeting the energy-saving requirement.
That is, when the user needs both domestic hot water and heating, the first switching device switches the first heat exchange flow path to communicate with the connection section, the second switching device switches the second heat exchange section to communicate, and the third heat exchanger switches the first branch to communicate with the second heat exchange flow path; at this time, the water on the waterway heat exchange system is heated by the first heat exchanger in the first heat exchange flow path, the hot water flows to the second heat exchange section and flows to the heat exchanger of the heating equipment to provide heating for a user, and then flows back to the first heat exchange flow path to form a first circulating heat exchange loop; part of water on the waterway heat exchange system is heated in the second heat exchange flow path through the wall-mounted furnace, hot water flows to the first branch path, after passing through the second heat exchanger and exchanging heat with domestic water, the domestic water is heated, and the exchanged water flows from the first branch path, through the third branch path and flows back to the second heat exchange flow path to form a second circulating heat exchange loop; thus, the circulation of the first circulating heat exchange loop and the second circulating heat exchange loop is realized; meanwhile, the first switching device, the second switching device and the third switching device can be controlled to act according to the hot water heating requirement of a user, so that the waterway heat exchange system has different flow paths, the heat pump system and the wall-mounted boiler system have different opening and closing and running states, the user can obtain hot water and heating at the same time, and the experience of the user is improved.
Fig. 13 is a flowchart of a fifth embodiment of a heat exchange control method according to the present invention.
The first heat exchanger also has a refrigeration state;
the heat exchange system further comprises a fourth switching device and a refrigerant branch, wherein two ends of the refrigerant branch are respectively connected with a refrigerant connecting section of the heat pump circulation loop;
the user demand mode comprises a hot water refrigeration mode, and the demand water temperature parameter comprises a demand hot water temperature parameter and a demand refrigeration water temperature parameter;
step S20 of adjusting control policies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-hanging stove system according to the user input information includes:
s201' ": controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
s202' ": controlling the second switching device to switch the second heat exchange section to be communicated;
s203' ". Controlling the third switching device to be closed;
s204' ": controlling the fourth switching device to switch the heat pump circulation loop to be communicated with the refrigerant branch;
s205' ": controlling the first heat exchanger to switch to the refrigeration state;
s206' ": controlling the heat pump system to work for a preset time period with a first power;
S207' ". Acquiring a seventh actual water temperature parameter of the first heat exchange section and an eighth actual water temperature parameter of the second heat exchange section;
s208' ": comparing the seventh actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the third switching device;
s209' ". And comparing the eighth actual water temperature parameter with the required refrigeration water temperature parameter, and adjusting a control strategy of the heat pump system.
In this embodiment, when the user needs domestic hot water and refrigeration at the same time, the first switching device switches the first heat exchange flow path to be communicated with the connection section, the second switching device switches the second heat exchange section to be communicated, the fourth switching device switches the heat pump circulation loop to be communicated with the refrigerant branch, and the first heat exchanger is switched to the refrigeration state; at this time, the refrigerant flows through the third heat exchanger from the refrigerant branch, exchanges heat with and heats domestic water, the refrigerant after heat exchange flows to the first heat exchanger, the first heat exchanger is in the refrigerating state at this time and is used for refrigerating hydration heat on the first heat exchange flow path, the refrigerant flows back from the first heat exchanger to form the heat pump circulation loop, meanwhile, cold water flows through the connecting section from the first heat exchange flow path, flows to the second heat exchange section and flows back to the first heat exchange flow path after providing cold air for a user through the heat exchanger of the refrigerating equipment, and the circulation heat exchange loop is formed; in this way, circulation of the heat pump circulation loop and the circulation heat exchange loop is realized; meanwhile, according to the comparison result of the seventh actual water temperature parameter and the required hot water temperature parameter, the eighth actual water temperature parameter and the required refrigeration water temperature parameter, the heat pump system and the wall hanging stove system are controlled to have different opening and closing and running states, so that a user can obtain hot water and cold air at the same time, and the experience of the user is improved.
It should be noted that, the step S208 '"of comparing the seventh actual water temperature parameter with the required hot water temperature parameter and adjusting the control strategy of the third switching device, and the step S209'" of comparing the eighth actual water temperature parameter with the required cooling water temperature parameter and adjusting the control strategy of the heat pump system have no necessary precedence relationship.
Specifically, the step S208' "of comparing the seventh actual water temperature parameter with the required hot water temperature parameter and adjusting the control strategy of the third switching device includes:
s2081' ": calculating a water temperature difference delta T according to the seventh actual water temperature parameter and the required hot water temperature parameter 7 ；
S2082': when DeltaT 7 The water temperature is not less than a fifth preset water temperature, and the first throttling element is controlled to be openedOpening, the second throttling element is closed;
s2083': when DeltaT 7 And < a fifth preset water temperature, controlling the heat pump system to continuously operate at the first power.
It should be noted that the specific value of the fifth preset water temperature is not limited in the present invention, specifically, in the present embodiment, the fifth preset water temperature is set to 0 ℃, when Δt 7 When the temperature is more than or equal to 0 ℃, the sixth actual water temperature parameter reaches the required heating water temperature parameter, the first throttling element is controlled to be opened, the second throttling element is controlled to be closed, and as the heat released by the second heat exchanger during heat exchange is absorbed by the heat storage part, when the heat pump system and the wall-mounted boiler system stop running, the heat storage part releases heat to heat domestic water, so that the water requirement of a user can be met, and the energy-saving requirement can also be met; when DeltaT 7 When the temperature is less than 0 ℃, the sixth actual water temperature parameter does not reach the required heating water temperature parameter, and the heat pump system is controlled to continuously operate with the first power, so that the heat pump system can continuously heat the water in the first heat exchange flow path, the water temperature on the first heat exchange flow path is further improved, and the water demand of a user is met.
Specifically, the fourth switching device comprises a first throttling element and a second throttling element, wherein: the first throttling element is positioned on the refrigerant connecting section; the second throttling element is located on the second refrigerant flow path. The step S209' "of comparing the eighth actual water temperature parameter with the required refrigeration water temperature parameter and adjusting the control strategy of the heat pump system includes:
s2091' ": calculating a water temperature difference delta T according to the eighth actual water temperature parameter and the required refrigeration water temperature parameter 8 ；
S2092' ": when DeltaT 8 The third preset water temperature is larger than the third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power;
s2093' ": when the fourth preset water temperature is less than or equal to delta T 8 The temperature of the water is smaller than or equal to a third preset water temperature, the heat pump system and the wall hanging furnace system are controlled to operate at a second power, Wherein the second power is less than the first power;
s2094' ": when DeltaT 8 And controlling the heat pump system and the wall-mounted boiler system to operate at a third power, wherein the third power is smaller than the second power.
It should be noted that the specific values of the third preset water temperature and the fourth preset water temperature are not limited in the present invention, specifically, in the present embodiment, the third preset water temperature is set to 3 ℃, the fourth preset water temperature is set to 1 ℃, when Δt 5 When the temperature is more than 3 ℃, the difference between the eighth actual water temperature parameter and the required refrigeration water temperature parameter is larger, and the heat pump system is controlled to continuously operate at the first power, so that the heat pump system can continuously refrigerate the water in the first heat exchange flow path, and the water temperature on the first heat exchange flow path is further reduced; when 1 ℃ is less than or equal to delta T 5 When the temperature is lower than or equal to 3 ℃, the eighth actual water temperature parameter is close to the required refrigeration water temperature parameter, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power, and the first power is P 1 The second power is P 2 ，P 2 ＝P 1 - (2*t) wherein t is time/min; therefore, when the eighth actual water temperature parameter is close to the required refrigeration water temperature parameter, the operation power of the heat pump system is reduced, so that on one hand, the water on the first heat exchange flow path can be continuously refrigerated, the water consumption requirement of a user is met, and on the other hand, the energy saving requirement can be met; when DeltaT 5 When the temperature is less than 1 ℃, the heat pump system is controlled to operate at the third power so as to ensure the water temperature of the first heat exchange flow path, so that the water consumption requirement of a user can be met, and the energy saving requirement can also be met.
When a user needs domestic hot water and refrigeration at the same time, the first switching device switches the first heat exchange flow path to be communicated with the connecting section, the second switching device switches the second heat exchange section to be communicated, the fourth switching device switches the heat pump circulation loop to be communicated with the refrigerant branch, and the first heat exchanger is switched to be in the refrigeration state; at this time, the refrigerant flows through the third heat exchanger from the refrigerant branch, exchanges heat with and heats domestic water, the refrigerant after heat exchange flows to the first heat exchanger, the first heat exchanger is in the refrigerating state at this time and is used for refrigerating hydration heat on the first heat exchange flow path, the refrigerant flows back from the first heat exchanger to form the heat pump circulation loop, meanwhile, cold water flows through the connecting section from the first heat exchange flow path, flows to the second heat exchange section and flows back to the first heat exchange flow path after providing cold air for a user through the heat exchanger of the refrigerating equipment, and the circulation heat exchange loop is formed; in this way, circulation of the heat pump circulation loop and the circulation heat exchange loop is realized; meanwhile, the first switching device, the second switching device and the third switching device can be controlled to act according to hot water refrigerating demands of users, so that the waterway heat exchange system has different circulation paths, the heat pump system and the wall-mounted boiler system have different opening and closing and running states, and therefore users can obtain hot water and cold air at the same time, and experience of the users is improved.
The foregoing description is only of alternative embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims (22)

1. A heat exchange system, comprising:
the heat pump system comprises a heat pump circulation loop and a first heat exchanger arranged on the heat pump circulation loop, wherein the first heat exchanger has a heating state;
the wall-mounted furnace system comprises a wall-mounted furnace; the method comprises the steps of,
the waterway heat exchange system comprises a first heat exchange flow path, a second heat exchange flow path, a heat exchange working section and a first switching device, wherein the first heat exchange flow path is connected with the heat exchange working section to form a circulating heat exchange loop, the circulating heat exchange loop comprises a connecting section positioned between the input end of the first heat exchange flow path and the heat exchange working section, two ends of the second heat exchange flow path are connected with two ends of the connecting section, and the first switching device is used for switching the first heat exchange flow path to be communicated with one of the connecting section and the second heat exchange flow path;
The first heat exchange flow path is connected with the first heat exchanger, and the second heat exchange flow path is connected with the wall-mounted furnace.
2. The heat exchange system of claim 1, wherein the first switching device comprises a first three-way valve having three ports connected to an input of the first heat exchange flow path, one end of the connecting section, and one end of the second heat exchange flow path, respectively.
3. The heat exchange system of claim 1, wherein the heat exchange operating section comprises:
the first heat exchange section is provided with a first heat exchange part which is used for exchanging heat between domestic water and hot water on the first heat exchange section;
the second heat exchange section is arranged in parallel with the first heat exchange section and is used for connecting an interface of a heat exchanger of heating or refrigerating equipment; the method comprises the steps of,
and the second switching device is used for switching the communication between the first heat exchange section and the first heat exchange flow path or the communication between the second heat exchange section and the first heat exchange flow path.
4. A heat exchange system according to claim 3, wherein the first heat exchange portion comprises a second heat exchanger.
5. A heat exchange system according to claim 3 wherein the first heat exchange section comprises a first leg, a second leg, and a third leg, one end of the first leg being connected to the connecting section, one end of the second leg and one end of the third leg being connected in parallel to the other end of the first leg, the other end of the second leg being connected to the first heat exchange flow path, the other end of the third leg being connected to the second heat exchange flow path;
the heat exchange system further comprises a third switching device, wherein the third switching device is used for switching the first branch to be communicated with one of the first heat exchange flow path and the second heat exchange flow path;
the second heat exchanger is positioned on the first branch;
the second switching device is located on the first branch.
6. The heat exchange system of claim 5, wherein the third switching device comprises a second three-way valve and/or a third three-way valve, wherein:
three interfaces of the second three-way valve are respectively connected with the second branch, the second heat exchange section and the first heat exchange flow path;
the third three-way valve is arranged on the second heat exchange flow path, and one interface of the third three-way valve is connected with the third branch.
7. A heat exchange system according to claim 3, wherein the second switching means comprises a first shut-off valve provided on the first heat exchange section.
8. The heat exchange system of claim 1 wherein the first heat exchanger further has a refrigerated condition;
the heat exchange system further comprises a fourth switching device and a refrigerant branch, wherein two ends of the refrigerant branch are respectively connected with a cold refrigerant connecting section of the heat pump circulation loop, and the fourth switching device is used for switching the heat pump circulation loop to be communicated with one of the cold refrigerant connecting section and the refrigerant branch so as to correspondingly enable the first heat exchanger to be switched between the heating state and the refrigerating state;
the refrigerant branch is provided with a second heat exchange part which is used for heat exchange and heating of domestic water.
9. The heat exchange system of claim 8, wherein the second heat exchange portion comprises a third heat exchanger.
10. Heat exchange system according to claim 8, wherein the fourth switching means comprises a first throttling element and/or a second throttling element, wherein:
the first throttling element is positioned on the cold refrigerant connecting section;
The second throttling element is located on the second refrigerant flow path.
11. The heat exchange system of claim 1, further comprising a water pump and an expansion tank disposed on the first heat exchange flow path upstream of the first heat exchanger, the water pump and the expansion tank being disposed in parallel.
12. The heat exchange system of claim 1, further comprising a fifth switching device comprising a second shut-off valve and/or a third shut-off valve, wherein:
the second stop valve is arranged in the second heat exchange flow path and is positioned at the water inlet of the wall-mounted furnace;
the third stop valve is arranged on the second heat exchange flow path and is positioned at the water outlet of the wall-mounted furnace.
13. The heat exchange system of claim 1, wherein the heat exchange working section comprises a first heat exchange section provided with a second heat exchanger for exchanging heat between domestic water and hot water on the first heat exchange section;
the heat exchange system further comprises a refrigerant branch, wherein the refrigerant branch is provided with a third heat exchanger, and the third heat exchanger is used for heat exchange and heating of domestic water;
The heat exchange system further comprises a heat storage water tank, the heat storage water tank comprises a shell and a heat storage part, a cavity is formed in the shell, and the heat storage part is arranged in the cavity and used for storing heat, so that when the heat pump system and the wall-mounted boiler system stop running, the heat can be released to heat domestic water;
wherein, the second heat exchanger and the third heat exchanger are both arranged in the cavity.
14. A heat exchange control method based on a heat exchange system according to any one of claims 1 to 13, characterized in that the heat exchange system further comprises a heat exchange working section comprising a first heat exchange section, a second switching device and a third switching device, the first heat exchange section further comprising a first branch, a second branch and a third branch;
the heat exchange control method comprises the following steps:
receiving user input information, wherein the user input information comprises a user demand mode and a demand water temperature parameter;
and adjusting control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information.
15. The heat exchange system of claim 14, wherein the first heat exchange section is provided with a second heat exchanger for exchanging heat between the domestic water and the hot water on the first heat exchange section;
the user demand mode includes a hot water mode, and the demand water temperature parameter includes a demand hot water temperature parameter;
according to the user input information, adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system, wherein the method comprises the following steps of:
comparing the required hot water temperature parameter with a preset hot water temperature parameter;
when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system to work according to a first control program;
when the required hot water temperature parameter is greater than or equal to the preset hot water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
16. The heat exchange system as set forth in claim 15, wherein the step of controlling the first switching device, the heat pump system and the wall-hanging boiler system to operate according to a first control program when the required hot water temperature parameter is smaller than the preset hot water temperature parameter, comprises:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the communication of the first heat exchange section;
controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
acquiring a first actual water temperature parameter of the first heat exchange section;
calculating a water temperature difference delta T according to the first actual water temperature parameter and the required hot water temperature parameter 1 ；
When DeltaT 1 When the water temperature is larger than a first preset water temperature, controlling the heat pump system to continuously operate at the first power;
when the second preset water temperature is less than or equal to DeltaT 1 The method comprises the steps of controlling the heat pump system to operate at a second power when the temperature is smaller than or equal to a first preset water temperature, wherein the second power is smaller than the first power;
when DeltaT 1 And (3) controlling the heat pump system to stop running when the second preset water temperature is less than the second preset water temperature.
17. The heat exchange system as set forth in claim 15, wherein the step of controlling the first switching device, the heat pump system and the wall-hanging boiler system to operate according to a second control program when the required hot water temperature parameter is equal to or greater than the preset hot water temperature parameter, comprises:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
controlling the second switching device to switch the communication of the first heat exchange section;
controlling the third switching device to switch the first branch to be communicated with the first heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
acquiring a second actual water temperature parameter of the first heat exchange section;
calculating a water temperature difference delta T according to the second actual water temperature parameter and the required hot water temperature parameter 2 ；
When DeltaT 2 Controlling the heat pump system and the wall-mounted boiler system to continuously operate at the first power;
when the second preset water temperature is less than or equal to DeltaT 2 Controlling the wall-mounted boiler system to stop running and controlling the heat pump system to run at a second power, wherein the second power is smaller than the first power;
When DeltaT 2 And controlling the heat pump system to stop running when the temperature is smaller than or equal to a second preset water temperature.
18. The heat exchange system of claim 14, wherein the second heat exchange section is adapted to connect an interface of a heat exchanger of a heating or cooling device;
the user demand mode includes a heating mode, and the demand water temperature parameter includes a demand heating water temperature parameter;
the step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
comparing the required heating water temperature parameter with a preset heating water temperature parameter;
when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, controlling the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system to work according to a first control program;
when the required heating water temperature parameter is greater than or equal to the preset heating water temperature parameter, the first switching device, the second switching device, the third switching device, the heat pump system and the wall hanging stove system are controlled to work according to a second control program.
19. The heat exchange system as set forth in claim 18, wherein the step of controlling the first switching device, the second switching device, the third switching device, the heat pump system, and the wall-hanging boiler system to operate according to a first control program when the required heating water temperature parameter is smaller than the preset heating water temperature parameter, comprises:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the second heat exchange section to be communicated;
the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
controlling the heat pump system to work for a preset time period with a first power, and controlling the wall-mounted boiler system to be closed;
acquiring a third actual water temperature parameter of the second heat exchange section;
calculating a water temperature difference delta T according to the third actual water temperature parameter and the required heating water temperature parameter 3 ；
When DeltaT 3 When the third preset water temperature is more than the third preset water temperature, controlling the heat pump system to continuously operate at the first power;
when the fourth preset water temperature is less than or equal to delta T 3 The temperature of the water is smaller than or equal to a third preset water temperature, and the heat pump system is controlled to operate at a second power, wherein the second power is smaller than the first power;
When DeltaT 3 And < a fourth preset water temperature, controlling the heat pump system to operate at a third power, wherein the third power is less than the second power.
20. The heat exchange system as set forth in claim 18, wherein the step of controlling the first switching device, the second switching device, the third switching device, the heat pump system, and the wall-hanging boiler system to operate according to a second control program when the required heating water temperature parameter is equal to or greater than the preset heating water temperature parameter, comprises:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the second heat exchange flow path;
controlling the second switching device to switch the second heat exchange section to be communicated;
the third switching device is controlled to switch the first branch and the first heat exchange flow path to be disconnected, and the second heat exchange section is connected with the first heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
acquiring a fourth actual water temperature parameter of the second heat exchange section;
calculating a water temperature difference delta T according to the fourth actual water temperature parameter and the required heating water temperature parameter 4 ；
When DeltaT 4 The third preset water temperature is larger than the third preset water temperature, and the heat pump system and the wall-mounted boiler system are controlled to continuously operate at the first power;
When the fourth preset water temperature is less than or equal to delta T 4 The temperature of the water is smaller than or equal to a third preset water temperature, the wall-mounted boiler system is controlled to stop running, and the heat pump system is controlled to run at a second power, wherein the second power is smaller than the first power;
when DeltaT 4 The temperature of the water is less than a fourth preset temperature, and the heat pump is controlledThe system operates at a third power, wherein the third power is less than the second power.
21. The heat exchange system of claim 14, wherein the user demand mode comprises a hot water heating mode, and the demand water temperature parameter comprises a demand hot water temperature parameter and a demand heating water temperature parameter;
the step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the second heat exchange section to be communicated;
controlling the third heat exchanger to switch the first branch to be communicated with the second heat exchange flow path;
controlling the heat pump system and the wall-mounted furnace system to work for a preset time period with a first power;
Acquiring a fifth actual water temperature parameter of the first branch and a sixth actual water temperature parameter of the second heat exchange section;
comparing the fifth actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the wall-mounted boiler system;
and comparing the sixth actual water temperature parameter with the required heating water temperature parameter, and adjusting a control strategy of the heat pump system.
22. The heat exchange system of claim 14 wherein the first heat exchanger further has a refrigerated condition;
the heat exchange system further comprises a fourth switching device and a refrigerant branch, wherein two ends of the refrigerant branch are respectively connected with a cold refrigerant connecting section of the heat pump circulation loop;
the user demand mode comprises a hot water refrigeration mode, and the demand water temperature parameter comprises a demand hot water temperature parameter and a demand refrigeration water temperature parameter;
the step of adjusting the control strategies of the first switching device, the second switching device, the third switching device, the heat pump system and the wall-mounted boiler system according to the user input information comprises the following steps:
controlling the first switching device to switch the first heat exchange flow path to be communicated with the connecting section;
controlling the second switching device to switch the second heat exchange section to be communicated;
Controlling the third switching device to be closed;
controlling the fourth switching device to switch the heat pump circulation loop to be communicated with the refrigerant branch;
controlling the first heat exchanger to switch to the refrigeration state;
controlling the heat pump system to work for a preset time period with a first power;
acquiring a seventh actual water temperature parameter of the first heat exchange section and an eighth actual water temperature parameter of the second heat exchange section;
comparing the seventh actual water temperature parameter with the required hot water temperature parameter, and adjusting a control strategy of the third switching device;
and comparing the eighth actual water temperature parameter with the required refrigeration water temperature parameter, and adjusting a control strategy of the heat pump system.
CN202211219765.5A 2022-09-30 2022-09-30 Heat exchange system Pending CN117847610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211219765.5A CN117847610A (en) 2022-09-30 2022-09-30 Heat exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211219765.5A CN117847610A (en) 2022-09-30 2022-09-30 Heat exchange system

Publications (1)

Publication Number Publication Date
CN117847610A true CN117847610A (en) 2024-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211219765.5A Pending CN117847610A (en) 2022-09-30 2022-09-30 Heat exchange system

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Country Link
CN (1) CN117847610A (en)

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