Interlocking space energy water heater and interlocking control method

Abstract

The present invention provides an interlocking space energy water heater and an interlocking control method, comprising a circuit control system, a first temperature sensor (8) arranged in a water outlet pipe of the solar collector (1), a second temperature sensor (9) arranged in the water tank (2), and a first switch (13) and a third switch (18) that are linked to each other. The present invention uses temperature difference to control the operation of solar energy, uses temperature to control the operation of air energy, and uses the linked first switch (13) and the third switch (18) to achieve the purpose of interlocking, so that the present invention can start solar energy first, improve the energy saving effect, and due to the interlocking nature, the temperature setting will not affect the operation of the present invention, which can meet the user's demand for temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of space energy water heaters, and in particular to an interlocking space energy water heater and an interlocking control method. Background Art

[0002] Solar energy is a pollution-free, energy-saving renewable energy source that is currently widely used in the hot water industry. However, in some cases, such as when there is no sunlight or the degree of sunlight is insufficient, using solar energy alone for heating cannot meet user needs. Therefore, the use of air energy to assist solar energy in heating has emerged, that is, using space energy to meet user needs at any time.

[0003] At present, the solar energy and air energy in the space energy water heater are operated separately. Specifically, temperature sensors are set in both the solar collector and the water tank, and a controller is used to electrically connect the two temperature sensors. The temperature difference between the solar collector and the water tank is used to control the heating of the solar heating device, and the temperature of the water tank is used to control the heating of the air energy. The two do not interfere with each other. As long as the temperature value and temperature difference value set by the controller are reached, the solar energy and air energy will operate. Therefore, it is possible that the solar energy and air energy work at the same time, resulting in a waste of resources.

[0004] In the prior art, for example, the temperature of the solar collector is defined as T1, the water tank temperature is defined as T2, and the temperature difference is defined as T3 = T1-T2. The setting value of the temperature difference for starting solar energy is set to 10°C, that is, when T3 is greater than 10°C, solar energy is started; the setting value of the water tank temperature and the temperature of the solar collector for starting air energy is set to 10°C, that is, when T1 is less than 10°C, air energy is started. Therefore, there are the following situations:

[0005] 1. T3 is greater than 10℃, T2 is greater than 10℃, in this case, the conditions for solar energy startup are met, but the conditions for air energy startup are not met. Therefore, solar energy works but air energy does not work. This situation occurs in clear weather with sufficient solar energy.

[0006] 2. T3 is not greater than 10℃, and T2 is greater than 10℃. In this case, neither solar energy nor air energy will be activated. This may occur when there is sufficient solar energy or when there is less solar energy. For example, when there is sufficient solar energy, the temperature of T2 may be 30℃, 40℃, etc. When there is less solar energy, T2 may be exactly 11℃ or 20℃, which are lower values ​​but can still reach the set value. In this case, neither solar energy nor air energy will work, but the temperature of the hot water may be lower and fail to meet the user's requirements.

[0007] 3. T3 is not greater than 10℃, T2 is not greater than 10℃, in this case, solar energy does not start, air energy starts. This situation occurs in rainy weather, solar energy heating cannot meet the requirements, so air energy is used for heating.

[0008] 4. When T3 is greater than 10℃ and T2 is not greater than 10℃, in this case, both solar energy and air energy are activated.

[0009] The above is a space energy control method of the prior art. Due to the variability of the environment, the hot water temperature may be low in the second case and fail to meet the needs of users, and the solar energy and air energy may work simultaneously in the fourth case, resulting in a waste of resources.

[0010] The above temperature difference and temperature setting values ​​are both set to 10℃, which is only a special setting. When the conventional setting in this field is adopted, that is, the water tank temperature for starting air energy and the temperature setting value of the solar collector are set to 50℃, and the other conditions are the same as above. Then, except for the second situation, the other situations are the same as the above situation, and the fourth situation is more likely to occur, that is, T3 is greater than 10℃, T2 is not greater than 50℃, at which time air energy and solar energy are heated at the same time.

[0011] According to the above two representative prior art settings, even if the setting values ​​of T2 and T3 are changed, the possible situations are all included in the above listed situations.

[0012] As can be seen from the above, in the prior art, since solar energy and air energy do not interfere with each other and are both directly controlled by temperature difference or temperature, there will be a situation where solar energy and air energy are started at the same time, and even in some cases there will be a problem of low hot water supply temperature. Summary of the invention

[0013] The purpose of the present invention is to overcome the defects of the prior art and provide an interlocking space energy water heater and an interlocking method which can effectively improve the energy saving effect.

[0014] The technical solution adopted by the present invention to solve the above-mentioned problem is an interlocking space energy water heater, comprising a solar collector, a water tank and an air source heat pump, wherein the solar collector and the air source heat pump are respectively connected to the water tank through a circulation pipeline, and the interlocking space energy water heater also includes a circuit control system, a first temperature sensor arranged in a water outlet pipe of the solar collector, and a second temperature sensor arranged in the water tank;

[0015] The circuit control system includes a first switch, a solar circulation pump electrically connected to the first switch, a solar temperature difference controller for controlling the opening and closing of the first switch, a second switch, a third switch connected in series to the second switch, an air source heat pump and an air source water pump circulation pump electrically connected to the third switch, and an air energy temperature controller for controlling the opening and closing of the second switch. The solar circulation pump is arranged in a circulation pipeline between the solar collector and the water tank, and the air source water pump circulation pump is arranged in a circulation pipeline between the air source heat pump and the water tank. The first sensor and the second sensor are both electrically connected to the solar temperature difference controller, and the second sensor is also electrically connected to the air energy temperature controller. The first switch and the third switch are interlocking switches. When the first switch is closed, the third switch is disconnected, and when the first switch is disconnected, the third switch is closed.

[0016] In some embodiments, a fourth switch is connected in series between the first switch and the solar circulation pump, and a fifth switch is connected in parallel to the fourth switch. The fourth switch and the second switch are interlocking switches. When the fourth switch is closed, the second switch is opened, and when the fourth switch is opened, the second switch is closed.

[0017] In some embodiments, the third switch is connected in parallel with a sixth switch.

[0018] In some embodiments, the solar circulation pump is connected in parallel with a first indicator light.

[0019] In some embodiments, the air source heat pump is connected in parallel with a second indicator light.

[0020] The present invention also provides an interlocking control method for an interlocking space energy water heater:

[0021] When the first switch is closed and the second switch is opened, the third switch linked to the first switch is opened, the solar circulation pump works, and the air source heat pump and the air source water pump circulation pump do not work;

[0022] When the first switch is disconnected and the second switch is disconnected, the third switch linked to the first switch is closed, the solar circulation pump does not work, and the air source heat pump and the air source water pump circulation pump do not work;

[0023] When the first switch is closed and the second switch is closed, the third switch linked to the first switch is opened, the solar circulation pump does not work, and the air source heat pump and the air source water pump circulation pump work;

[0024] When the first switch is opened and the second switch is closed, the third switch linked to the first switch is closed, the solar circulation pump works, and the air source heat pump and the air source water pump circulation pump do not work.

[0025] In some embodiments, when the temperature difference between the temperature T1 detected by the first temperature sensor and the temperature T2 detected by the second temperature sensor is not less than the temperature difference setting value T3 of the solar temperature difference controller and the T2 is not less than the temperature setting value T0 of the air energy temperature controller, the solar temperature difference controller controls the first switch to close, the third switch linked to the first switch to open, the air energy temperature controller controls the second switch to open, the solar circulation pump works, and the air source heat pump and the air source water pump circulation pump do not work;

[0026] When T1-T2 is less than T3 and T2 is not less than T0, the solar temperature difference controller controls the first switch to be disconnected, the third switch linked to the first switch is closed, the air energy temperature controller controls the second switch to be disconnected, the solar circulation pump does not work, and the air source heat pump and the air source water pump circulation pump do not work;

[0027] When T1-T2 is less than T3 and T2 is less than T0, the solar temperature difference controller controls the first switch to be disconnected, the third switch linked with the first switch to be closed, the air energy temperature controller controls the second switch to be closed, the solar circulation pump does not work, and the air source heat pump and the air source water pump circulation pump work;

[0028] When T1-T2 is not less than T3 and T2 is less than T0, the solar temperature difference controller controls the first switch to close, the third switch linked to the first switch is disconnected, the air energy temperature controller controls the second switch to close, the solar circulation pump works, and the air source heat pump and the air source water pump circulation pump do not work.

[0029] The beneficial effect of the present invention is that the linkage effect of the first switch and the third switch is utilized, that is, when the first switch is closed, the third switch is disconnected, so that when the solar collector is working, the air energy must be in a non-working state. Therefore, the operation of the solar collector is prioritized, and the solar energy can be fully utilized to achieve energy-saving effects. The heating temperature of the air energy can be determined according to the set value, so that the temperature of the hot water can always be obtained according to actual needs, which not only achieves the energy-saving effect but also meets the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an overall operating principle diagram of an interlocking space energy water heater and an interlocking method according to an embodiment of the present invention;

[0031] Figure 2 An interlocking circuit schematic diagram of an interlocking space energy water heater and an interlocking method according to an embodiment of the present invention;

[0032] In the figure, 1. solar collector; 2. water tank; 3. air source heat pump; 4. solar circulation pump; 5. air energy temperature controller; 6. air source water pump circulation pump; 7. solar temperature difference controller; 8. first temperature sensor; 9. second temperature sensor; 10. circulation pipeline; 11. cold water inlet pipe; 12. hot water outlet pipe; 13. first switch; 14. second switch; 15. fifth switch; 16. sixth switch; 17. fourth switch; 18. third switch; 19. first indicator light; 20. second indicator light. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0034] Reference Figure 1 Figure 2 , an interlocking space energy water heater, comprising a solar collector 1, a water tank 2 and an air source heat pump 3, wherein the solar collector 1 and the air source heat pump 3 are both connected to the water tank 2 through a circulation pipe 10, and the connection method thereof is referred to Figure 1 As shown, the solar collector 1 and the water tank 2 are connected by two pipes, one pipe allows the hot water in the solar collector 1 to enter the water tank 2, and the other pipe allows the water in the water tank 2 to enter the solar collector 1; the air source heat pump 3 and the water tank 2 are also connected by two pipes in the same way as the connection between the solar collector 1 and the water tank 2 mentioned above.

[0035] The interlocking space energy water heater also includes a circuit control system, a first temperature sensor 8 arranged in the water outlet pipe of the solar collector 1, and a second temperature sensor 9 arranged in the water tank 2; as a better position, the first temperature sensor 8 is arranged at the water outlet of the solar collector 1, so that the measured temperature is more accurate.

[0036] The circuit control system includes a first switch 13, a solar circulation pump 4 electrically connected to the first switch 13, a solar temperature difference controller 7 for controlling the opening and closing of the first switch 13, a second switch 14, a third switch 18 connected to the second switch 14, an air source heat pump 3 and an air source water pump circulation pump 6 electrically connected to the third switch 18, and an air energy temperature controller 5 for controlling the opening and closing of the second switch 14. In this embodiment, the connections between the switches are all circuit connections.

[0037] The solar circulation pump 4 is arranged in the circulation pipe 10 between the solar collector 1 and the water tank 2. Specifically, the water in the water tank 2 enters the pipe through which the solar collector 1 passes. The air source water pump circulation pump 6 is arranged in the circulation pipe 10 between the air source heat pump 3 and the water tank 2. Its arrangement method is similar to that of the solar circulation pump 4, and is used to pump the water in the water tank 2 into the air source heat pump 3.

[0038] The first sensor 8 and the second sensor 9 are both electrically connected to the solar temperature difference controller 7, which is used to obtain the temperature difference between the solar collector 1 and the water tank 2 through the temperatures of the first sensor 8 and the second sensor 9, and control the opening and closing of the first switch 13 through the temperature difference; the second sensor 9 is also electrically connected to the air energy temperature controller 5, and the air energy temperature controller 5 controls the opening and closing of the second switch 14 only through the temperature; the first switch 13 and the third switch 18 are linkage switches, and the linkage switch here means that when the first switch 13 is disconnected, the third switch 18 is in a closed state. When the first switch 13 is closed, the third switch 18 is in an open state.

[0039] As a better embodiment, a fourth switch 17 is also connected in series between the first switch 13 and the solar circulation pump 4, and the fourth switch 17 is connected in parallel with a fifth switch 15, where the parallel connection refers to the connection of the two ends of the fifth switch 15 with the two ends of the fourth switch 17. The fourth switch 17 and the second switch 14 are linkage switches. The linkage switch here means that when the second switch 17 is disconnected, the fourth switch 14 is in a closed state, and when the second switch 17 is closed, the fourth switch 14 is in an open state. In this embodiment, when the fifth switch 15 is closed, the operation of the solar circulation pump 4 is only controlled by the temperature difference and not by the second switch 14. When the fifth switch 15 is disconnected, according to the actual situation, the temperature in the water tank 2 after air energy heating cannot be lower than the temperature in the solar collector 1. Therefore, the solar circulation pump 4 does not work all the time, and only the air source heat pump 3 and the air source water pump circulation pump 6 work. Therefore, in the actual production process, the fifth switch is a manually controlled switch and is always in a closed state, and is only disconnected when solar energy is not needed.

[0040] Similarly, the third switch 18 is connected in parallel with the sixth switch 16. This design is similar to the fourth switch 14 and the fifth switch 15, except that when the sixth switch 16 is disconnected, it has no effect on this embodiment, but when the sixth switch 16 is closed, the solar circulation pump 4 and the air source heat pump 3 and the air source water pump circulation pump 6 are started at the same time, which can speed up the heating speed of the water in the water tank 2. Therefore, in the actual production process, the sixth switch 16 is a manually controlled switch and is always in an open state. It is closed only when it is necessary to heat with solar energy and air energy at the same time.

[0041] Preferably, the solar circulation pump 4 is connected in parallel with a first indicator light 19. The air source heat pump 3 is connected in parallel with a second indicator light 20. The first indicator light 19 and the second indicator light 20 are used to easily determine whether the air energy is heating or the solar energy is heating, or both are heating at the same time.

[0042] The following also provides an interlocking control method for an interlocking space energy water heater, and as an embodiment, the temperature difference setting value of the solar temperature difference controller 7 is determined to be 3°C, and the temperature setting value of the air energy temperature controller 5 is 50°C and 55°C, that is, when the temperature difference between the first temperature sensor 8 and the second temperature sensor 9 is greater than or equal to 3°C, the solar circulation pump 4 works; when the temperature of the second temperature sensor 9 is less than 50°C, the air source heat pump 3 and the air source water pump circulation pump 6 work, and when the air energy is heated to the temperature of the second temperature sensor 9 to reach 55°C, the air source heat pump 3 and the air source water pump circulation pump 6 stop working. The details are as follows:

[0043] When the temperature difference between the temperature detected by the first temperature sensor 8 and the temperature detected by the second temperature sensor 9 is not less than 3°C, and the temperature detected by the second temperature sensor 9 is not less than 50°C, the solar temperature difference controller 7 controls the first switch 13 to close, the air energy temperature controller 5 controls the second switch 14 to open, the solar circulation pump 4 works, and the air source heat pump 3 and the air source water pump circulation pump 6 do not work;

[0044] When the temperature difference between the temperature detected by the first temperature sensor 8 and the temperature detected by the second temperature sensor 9 is less than 3°C, and the temperature detected by the second temperature sensor 9 is not less than 50°C, the solar temperature difference controller 7 controls the first switch 13 to be disconnected, the air energy temperature controller 5 controls the second switch 14 to be disconnected, the solar circulation pump 4 does not work, and the air source heat pump 3 and the air source water pump circulation pump 6 do not work;

[0045] When the temperature difference between the temperature detected by the first temperature sensor 8 and the temperature detected by the second temperature sensor 9 is less than 3°C, and the temperature detected by the second temperature sensor 9 is less than 50°C, the solar temperature difference controller 7 controls the first switch 13 to disconnect, and the third switch 18 linked to the first switch 13 is closed, the air energy temperature controller 5 controls the second switch 14 to close, the solar circulation pump 4 does not work, and the air source heat pump 3 and the air source water pump circulation pump 6 work; when the temperature detected by the second temperature sensor 9 is equal to 55°C, the air energy temperature controller 5 controls the second switch 14 to disconnect, and the air source heat pump 3 and the air source water pump circulation pump 6 no longer work.

[0046] When the temperature difference between the temperature detected by the first temperature sensor 8 and the temperature detected by the second temperature sensor 9 is not less than 3°C, and the temperature detected by the second temperature sensor 9 is less than 50°C, the solar temperature difference controller 7 controls the first switch 13 to close, and the third switch 18 linked to the first switch 13 is disconnected, the air energy temperature controller 5 controls the second switch 14 to close, the solar circulation pump 4 works, and the air source heat pump 3 and the air source water pump circulation pump 6 do not work.

[0047] It is worth noting that the above-mentioned temperature difference or temperature setting values ​​can be set according to actual needs.

[0048] The advantage of the present invention is that the linkage effect of the first switch 13 and the third switch 18 is utilized, that is, when the first switch 13 is closed, the third switch 18 is disconnected, so that when the solar collector 1 is working, the air energy must be in a non-working state. Therefore, the operation of the solar collector 1 is prioritized, and the solar energy can be fully utilized to achieve energy-saving effects. The heating temperature of the air energy can be determined according to the set value, so that the temperature of the hot water can always be obtained according to actual needs, which not only achieves the energy-saving effect but also meets the needs of users.

Claims

1. An interlocking space energy water heater, comprising a solar collector (1), a water tank (2) and an air source heat pump (3), wherein the solar collector (1) and the air source heat pump (3) are connected to the water tank (2) through a circulation pipe (10), characterized in that: The interlocking space energy water heater further comprises a circuit control system, a first temperature sensor (8) arranged in the water outlet pipe of the solar collector (1), and a second temperature sensor (9) arranged in the water tank (2); The circuit control system comprises a first switch (13), a solar circulation pump (4) electrically connected to the first switch (13), a solar temperature difference controller (7) for controlling the opening and closing of the first switch (13), a second switch (14), a third switch (18) connected in series with the second switch (14), an air source heat pump (3) and an air source water pump circulation pump (6) electrically connected to the third switch (18), and an air energy temperature controller (5) for controlling the opening and closing of the second switch (14), wherein the solar circulation pump (4) is arranged in a circulation pipe (10) between the solar collector (1) and the water tank (2), and the air source water pump circulation pump (6) is arranged between the air source heat pump (3) and the water tank (2). In a circulation pipeline (10), the first temperature sensor (8) and the second temperature sensor (9) are both electrically connected to the solar temperature difference controller (7), the second temperature sensor (9) is also electrically connected to the air energy temperature controller (5), the first switch (13) and the third switch (18) are interlocking switches, when the first switch (13) is closed, the third switch (18) is opened, when the first switch (13) is opened, the third switch (18) is closed, a fourth switch (17) is also connected in series between the first switch (13) and the solar circulation pump (4), the fourth switch (17) is connected in parallel with a fifth switch (15), the fourth switch (17) and the second switch (14) are connected in series with each other. The invention is a linkage switch. When the fourth switch (17) is closed, the second switch (14) is disconnected. When the fourth switch (17) is disconnected, the second switch (14) is closed. The third switch (18) is connected in parallel with a sixth switch (16). The solar circulation pump (4) is connected in parallel with a first indicator light (19). The air source heat pump (3) is connected in parallel with a second indicator light (20). When the first switch (13) is closed and the second switch (14) is disconnected, the third switch (18) linked to the first switch (13) is disconnected. The solar circulation pump (4) works, while the air source heat pump (3) and the air source water circulation pump (6) do not work. When the first switch (13) is disconnected and the second switch (14) is disconnected, When the third switch (18) linked to the first switch (13) is closed, the solar circulation pump (4) does not work, and the air source heat pump (3) and the air source water pump circulation pump (6) do not work. When the first switch (13) is closed and the second switch (14) is closed, the third switch (18) linked to the first switch (13) is disconnected, the solar circulation pump (4) does not work, while the air source heat pump (3) and the air source water pump circulation pump (6) work. When the first switch (13) is disconnected and the second switch (14) is closed, the third switch (18) linked to the first switch (13) is closed, the solar circulation pump (4) works, while the air source heat pump (3) and the air source water pump circulation pump (6) do not work.When the temperature difference between the temperature T1 detected by the first temperature sensor (8) and the temperature T2 detected by the second temperature sensor (9) is not less than the temperature difference setting value T3 of the solar temperature difference controller (7) and the temperature T2 is not less than the temperature setting value T0 of the air energy temperature controller (5), the solar temperature difference controller (7) controls the first switch (13) to close, the third switch (18) linked to the first switch (13) to open, the air energy temperature controller (5) controls the second switch (14) to open, the solar circulation pump (4) to work, and the air source heat pump (3) and the air source water pump circulation pump (6) to stop working; When T1-T2 is less than T3 and T2 is not less than T0, the solar temperature difference controller (7) controls the first switch (13) to be disconnected, the third switch (18) linked to the first switch (13) to be closed, the air energy temperature controller (5) controls the second switch (14) to be disconnected, the solar circulation pump (4) does not work, and the air source heat pump (3) and the air source water pump circulation pump (6) do not work; When T1-T2 is less than T3 and T2 is less than T0, the solar temperature difference controller (7) controls the first switch (13) to be disconnected, and the third switch (18) linked to the first switch (13) to be closed, the air energy temperature controller (5) controls the second switch (14) to be closed, the solar circulation pump (4) does not work, and the air source heat pump (3) and the air source water pump circulation pump (6) work; When T1-T2 is not less than T3 and T2 is less than T0, the solar temperature difference controller (7) controls the first switch (13) to close, the third switch (18) linked to the first switch (13) to open, the air energy temperature controller (5) controls the second switch (14) to close, the solar circulation pump (4) to work, and the air source heat pump (3) and the air source water pump circulation pump (6) to stop working.

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