Electrically interworking and air energy coupled heating system

Abstract

The application discloses an electrically connected and air energy coupled heat supply system, which comprises an electrode boiler, a gas boiler, an air source heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger and a heat storage water tank, the electrode boiler is connected with the first heat exchanger through a pipeline, the gas boiler is connected with the second heat exchanger through a pipeline, the air source heat pump is connected with the third heat exchanger, and the first heat exchanger, the second heat exchanger and the third heat exchanger are all connected with the heat storage water tank. The heat supply system has the beneficial effects that air energy, electric energy and gas are combined to supply heat, and the reliability of the whole heat supply system is improved.

Description

Technical Field

[0001] This invention relates to the field of energy utilization, and more particularly to an electrical-electrical combined heating and air-source heat pump system. Background Technology

[0002] Currently, many regions use centralized natural gas heating. Although centralized natural gas heating is relatively environmentally friendly, it is subject to considerable uncertainty due to the requirement that natural gas must be transported through pipelines. Summary of the Invention

[0003] To address the above-mentioned problems, this invention proposes an electrical-coupled and air-source heat pump system.

[0004] The technical solution adopted in this invention is as follows:

[0005] An electrical-electrical combined heating and air-source heat pump system includes an electrode boiler, a gas boiler, an air-source heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, and a hot water storage tank. The electrode boiler is connected to the first heat exchanger via a pipeline, the gas boiler is connected to the second heat exchanger via a pipeline, the air-source heat pump is connected to the third heat exchanger, and the first, second, and third heat exchangers are all connected to the hot water storage tank.

[0006] The working principle of this heating system is as follows: First, during the day (peak electricity consumption period for industrial and agricultural production) when the weather is sunny, an air source heat pump can be used for heating (this process requires a certain amount of electricity). At night (off-peak electricity consumption period for industrial and agricultural production), an electrode boiler can be used for heating. When the power supply from the municipal power grid is lost, a gas boiler can be used for heating. Therefore, this heating system coordinates the use of air source heat pumps, electricity, and gas for heating, which improves the reliability of the entire heating system.

[0007] Optionally, the electrode boiler includes a furnace shell, electrode rods, baffles, ceramic packing, filter plates, and a thyristor power regulator. The electrode rods are disposed inside the furnace shell and are electrically connected to the thyristor power regulator. There are two filter plates disposed inside the furnace shell, and the two filter plates are parallel and do not contact each other. The ceramic packing is filled between the two filter plates. The bottom of the furnace shell has a water inlet and a water supply outlet, and the top of the furnace shell has a water outlet. The electrode rods are located between the water inlet and the water outlet, and the filter plates are located between the electrode rods and the water inlet. The baffles are disposed inside the furnace shell and are located between the water outlet and the top of the furnace shell.

[0008] It should be noted that the electrode rods installed inside the furnace shell of this type of electric boiler are the same as those in patent publication CN110068001B. The electrode heads of this type of electrode rod are quincunx-shaped, which increases the contact area with the electrolyte liquid and improves heating efficiency. However, because the electrode heads are quincunx-shaped, the entire electrode rod is prone to shaking when the electrode heads are impacted by water flow. Since the fittings on the electrode rod are made of ceramic, the ceramic on the electrode rod is prone to breakage when it shakes. In order to reduce the probability of ceramic breakage, the electric boiler used in this system needs to minimize the probability of electrode rod shaking. Therefore, all parts inside the furnace shell of this type of electrode boiler are fixedly installed, and there are no moving parts inside the furnace shell during operation. Thus, this type of electrode boiler can reduce the shaking of parts during operation. The heating power of the electrode rod is directly adjusted by the thyristor power regulator.

[0009] Meanwhile, in this type of electrode boiler, since the inlet and outlet are located at the bottom of the furnace shell, the process of water intake and replenishment may cause disturbance to the liquid inside the furnace shell, thereby affecting the stability of the electrode rods inside the furnace shell. Therefore, in this electrode boiler, a ceramic packing layer is formed between the inlet (including the outlet) and the electrode rods by utilizing the clamping effect of the filter screen plate. With the presence of this ceramic packing layer, when the electrolyte liquid (and boiler water) flows upward (i.e., in the direction of the electrode rods), the water passes through the obstruction and diversion effect of the ceramic packing layer. The water overflows upwards at each location, which avoids disturbance of the boiler water when water enters. Secondly, since the thermal conductivity of the ceramic packing layer is relatively poor compared to metal (the furnace shell is made of metal), the ceramic packing layer acts as a heat storage medium. When the low-temperature water entering from the water inlet (or water supply inlet) flows through the ceramic packing layer to the electrode rod and the zero-position electrode, the ceramic packing layer can preheat the low-temperature water, which reduces the temperature difference before and after the electrode rod to a certain extent, avoids the electrode rod from sudden cooling and heating during operation, and improves the service life of the electrode rod.

[0010] In this type of electrode boiler, a baffle is also installed inside the furnace shell. The function of the baffle is twofold: to reduce the evaporation of the boiler water and to improve the stability of the boiler water below, thus preventing disturbance of the boiler water.

[0011] Optionally, the partition is parallel to the filter plate.

[0012] Optionally, a corrugated hose is also included, with both the inlet and outlet connected to a corrugated hose.

[0013] Optionally, a zero-position electrode may also be included, which is disposed inside the furnace shell.

[0014] Optionally, a water supply pipe is connected to the water supply port. The water supply pipe is circular and has a stud inside. The thread of the stud is close to the inner wall of the water supply pipe. The gap between the stud and the water supply pipe is a channel for water to enter the furnace shell. The stud is perpendicular to the filter plate.

[0015] The specific water supply pipe is located at the bottom of the furnace shell. Because the electrode boiler loses some boiler water during operation due to dripping and leakage, and the lost boiler water needs to be replenished in time, a water supply pipe is further installed to replenish the boiler water. In this type of boiler water supply pipe, a stud is installed inside the boiler water pipe. Boiler water is replenished between the stud and the inner wall of the water supply pipe. The path of the boiler water flowing through the water supply pipe is not a straight path, but a spiral oscillating path. Therefore, the replenished boiler water will overflow from all directions when it enters the furnace shell. The replenished boiler water follows a spiral path inside the furnace shell. During the water intake process, it will continuously rub against the stud and the water supply pipe, increasing the temperature of the water when it enters, thereby avoiding sudden cooling and heating at the bottom of the furnace shell.

[0016] Optionally, the surface roughness Ra value of the stud is greater than 0.8.

[0017] The relatively rough stud serves two purposes: firstly, it increases friction with water during water replenishment, and secondly, it allows dust particles suspended in the water to adhere to the stud as much as possible during water replenishment.

[0018] Optionally, an inspection manhole is provided on the furnace shell.

[0019] Optionally, it may also include a battery module, which is electrically connected to the air source heat pump.

[0020] Since air source heat pumps also require a certain amount of electricity to drive the compressor when heating the air, a battery module is added. When the grid power supply is completely lost, the air source heat pump can be powered by the battery module, thereby realizing heating using air energy.

[0021] Optionally, it also includes a first main water pump, a first auxiliary water pump, a second main water pump, a second auxiliary water pump, a third main water pump, and a third auxiliary water pump. The first main water pump is connected to the first heat exchanger and the electrode boiler, the first auxiliary water pump is connected to the first heat exchanger and the hot water storage tank, the second main water pump is connected to the gas boiler and the second heat exchanger, the second auxiliary water pump is connected to the second heat exchanger and the hot water storage tank, the third main water pump is connected to the air source heat pump and the third heat exchanger, and the third auxiliary water pump is connected to the third heat exchanger and the hot water storage tank.

[0022] The beneficial effects of this invention are: by coordinating the use of air energy, electric energy and gas for heating, the reliability of the entire heating system is improved. Attached Figure Description

[0023] Figure 1 This is a simplified schematic diagram of an electrical-electrical combined heating and air-source heat pump system.

[0024] Figure 2 This is a simplified structural diagram of an electrode boiler;

[0025] Figure 3 This is a schematic diagram showing the fit between the water supply pipe and the stud.

[0026] The figures are labeled as follows: 1. Electrode boiler; 101. Furnace shell; 1011. Water outlet; 1012. Water inlet; 102. Zero-position electrode; 103. Electrode rod; 1031. Electrode rod; 104. Baffle plate; 105. Inspection door; 106. Filter plate; 107. Ceramic packing layer; 108. Corrugated tube; 109. Support; 1010. Stud; 1013. Make-up water pipe; 2. Gas boiler; 3. Air source heat pump; 41. First heat exchanger; 42. Second heat exchanger; 43. Third heat exchanger; 5. First main water pump; 52. First auxiliary water pump; 61. Second main water pump; 62. Second auxiliary water pump; 71. Third main water pump; 72. Third auxiliary water pump; 8. Hot water storage tank; 81. Hot water supply pipe; 82. Recycled water pipe. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] As attached Figure 1 As shown, an electrical and air-source coupled heating system includes an electrode boiler 1, a gas boiler 2, an air source heat pump 3, a first heat exchanger 41, a second heat exchanger 42, a third heat exchanger 43, and a hot water storage tank 8. The electrode boiler 1 is connected to the first heat exchanger 41 via a pipe, the gas boiler 2 is connected to the second heat exchanger 42 via a pipe, the air source heat pump 3 is connected to the third heat exchanger 43, and the first heat exchanger 41, the second heat exchanger 42, and the third heat exchanger 43 are all connected to the hot water storage tank 8.

[0029] The working principle of this heating system is as follows: First, during the day (peak period for industrial and agricultural electricity consumption) when the weather is sunny, the air source heat pump 3 can be used for heating (this process requires a certain amount of electricity). At night (off-peak period for industrial and agricultural electricity consumption), the electrode boiler 1 can be used for heating. When the power supply from the municipal power grid is lost, the gas boiler 2 can be used for heating. Therefore, this heating system coordinates the use of air source heat pump, electric energy and gas for heating, which improves the reliability of the entire heating system.

[0030] As attached Figure 2As shown, the electrode boiler 1 includes a furnace shell 101, electrode rods 1031, baffles 104, ceramic packing, filter plates 106, and a thyristor power regulator (not shown in the attached figure). The electrode rods 1031 are disposed inside the furnace shell 101 and are electrically connected to the thyristor power regulator. There are two filter plates 106, which are disposed inside the furnace shell 101 and are parallel and do not contact each other. The ceramic packing... The filter screen 106 is filled between two filter screen plates 106. The bottom of the furnace shell 101 is provided with a water inlet 1012 and a water supply outlet, and the furnace shell 101 is provided with a water outlet 1011. The electrode rod 1031 is located between the water inlet 1012 and the water outlet 1011. The filter screen plate 106 is located between the electrode rod 1031 and the water inlet 1012. The partition plate 104 is disposed inside the furnace shell 101 and is located between the water outlet 1011 and the top of the furnace shell 101.

[0031] It should be noted that the electrode rod 1031 installed inside the furnace shell 101 of this type of electric boiler is the same as the electrode rod 1031 in patent publication document CN110068001B. The electrode head of this type of electrode rod 1031 is shaped like a quincunx, which increases the contact area with the electrolyte solution and improves heating efficiency. However, because the electrode head is quincunx-shaped, the entire electrode rod 1031 is prone to shaking when the electrode head is impacted by water flow. Furthermore, the fittings on the electrode rod 1031 are made of ceramic. When the electrode rod 1031 shakes, the ceramic on the electrode rod 1031 is prone to cracking. In order to reduce the probability of ceramic cracking, the electric boiler used in this system needs to minimize the probability of the electrode rod 1031 shaking. Therefore, all parts inside the furnace shell 101 of this electrode boiler 1 are fixedly installed. There are no moving parts inside the furnace shell 101 during operation. Therefore, the shaking of parts can be reduced during operation. The heating power of the electrode rod 1031 is directly adjusted by the thyristor power regulator.

[0032] Meanwhile, in this type of electrode boiler 1, since the inlet 1012 and the water inlet are located at the bottom of the furnace shell 101, the process of water intake and water replenishment may cause disturbance to the liquid inside the furnace shell 101, thereby affecting the stability of the electrode rod 1031 inside the furnace shell 101. Therefore, in this electrode boiler 1, a ceramic packing layer 107 is formed between the inlet 1012 (including the water inlet) and the electrode rod 1031 by utilizing the clamping action of the filter screen plate 106. With the presence of this ceramic packing layer 107, when the electrolyte liquid (and boiler water) flows upward (i.e., in the direction of the electrode rod 1031), the water passes through the obstruction and diversion effect of the ceramic packing layer 107. The upward overflow at each position of 107 avoids disturbance of the furnace water during water intake. Secondly, since the thermal conductivity of the ceramic packing layer 107 is relatively poor compared to metal (the furnace shell 101 is made of metal), the ceramic packing layer 107 acts as a heat storage medium. When the low-temperature water entering from the water inlet 1012 (or water supply inlet) flows through the ceramic packing layer 107 to the electrode rod 1031 and the zero-position electrode 102, the ceramic packing layer 107 can preheat the low-temperature water, which reduces the temperature difference before and after the electrode rod 1031 to a certain extent, avoids the sudden cooling and heating phenomenon of the electrode rod 1031 during operation, and improves the service life of the electrode rod 1031.

[0033] In this type of electrode boiler 1, a baffle 104 is also provided inside the furnace shell 101. The function of the baffle 104 is twofold: first, to reduce the evaporation of the boiler water; and second, to improve the stability of the boiler water below (the boiler water is almost in contact with the baffle), and to prevent the boiler water from shaking or being disturbed.

[0034] As attached Figure 2 As shown, the partition 104 is parallel to the filter plate 106.

[0035] As attached Figure 2 As shown, it also includes corrugated hoses, with corrugated hoses connected to both the inlet 1012 and the outlet 1011.

[0036] As attached Figure 2 As shown, it also includes a zero-position electrode 102, which is disposed inside the furnace shell 101.

[0037] There are three pairs of specific electrode rods and zero-position electrodes, but only two pairs are shown in the attached diagram.

[0038] As attached Figure 2 As shown, a water supply pipe 1013 is connected to the water supply port. The water supply pipe 1013 is a circular water supply pipe. A stud 1010 is installed inside the water supply pipe. The thread of the stud 1010 is close to the inner wall of the water supply pipe. The gap between the stud 1010 and the water supply pipe is the channel for water to enter the furnace shell 101. The stud 1010 is perpendicular to the filter screen plate 106.

[0039] See appendix Figure 3 As shown, the specific water supply pipe is located at the bottom of the furnace shell 101. Since the electrode boiler 1 loses some boiler water during operation due to dripping and leakage, and the lost boiler water needs to be replenished in time, a water supply pipe is further set up to replenish the boiler water. In this type of boiler water supply pipe, a stud 1010 is set inside the boiler water pipe. Boiler water is replenished between the stud 1010 and the inner wall of the water supply pipe. The path of the boiler water when flowing through the water supply pipe is not a straight path, but a spiral oscillating path. Therefore, the replenished boiler water will overflow from all directions when it enters the furnace shell 101. The replenished boiler water follows a spiral path inside the furnace shell 101. During the water intake process, it will continuously rub against the stud 1010 and the water supply pipe to increase the temperature, thereby avoiding the phenomenon of sudden cooling and heating at the bottom of the furnace shell 101.

[0040] See appendix Figure 2 As shown, the temperature of the boiler water above the ceramic packing layer 107 is relatively high, while the temperature of the boiler water below the ceramic packing layer 107 is relatively low.

[0041] As attached Figure 2 As shown, the surface roughness Ra value of stud 1010 is greater than 0.8.

[0042] See appendix Figure 3 As shown, the relatively rough stud 1010 serves two purposes: firstly, it increases the friction with water during water replenishment, and secondly, it allows dust particles suspended in the water to adhere to the stud 1010 as much as possible during water replenishment.

[0043] As attached Figure 2 As shown, an inspection manhole is provided on the furnace shell 101.

[0044] It also includes a battery module, which is electrically connected to the air source heat pump 3.

[0045] Since the air source heat pump 3 also requires a certain amount of electricity to drive the compressor when heating the air, a battery module is further added. When the grid power supply is completely lost, the air source heat pump 3 can be powered by the battery module, thereby realizing heating using air energy.

[0046] As attached Figure 1As shown, it also includes a first main water pump 5, a first auxiliary water pump 52, a second main water pump 61, a second auxiliary water pump 62, a third main water pump 71, and a third auxiliary water pump 72. The first main water pump 5 is connected to the first heat exchanger 41 and the electrode boiler 1. The first auxiliary water pump 52 is connected to the first heat exchanger 41 and the hot water storage tank 8. The second main water pump 61 is connected to the gas boiler 2 and the second heat exchanger 42. The second auxiliary water pump 62 is connected to the second heat exchanger 42 and the hot water storage tank 8. The third main water pump 71 is connected to the air source heat pump 3 and the third heat exchanger 43. The third auxiliary water pump 72 is connected to the third heat exchanger 43 and the hot water storage tank 8.

[0047] Specifically, the boiler water in electrode boiler 1 is sodium phosphate electrolyte solution, while the boiler water in gas boiler 2 is softened water, and the liquid in air source heat pump 3 is antifreeze solution. During operation, the electrolyte solution circulates between electrode boiler 1 and first heat exchanger 41 through the action of the first main water pump 5 (the circulation path is shown in the attached diagram). Figure 1 (As indicated by the middle arrow), while the softened water in the gas boiler 2 circulates between the gas boiler 2 and the second heat exchanger 42 via the second main water pump 61 (the flow is shown in the attached diagram). Figure 1 (As indicated by the arrow in the middle), and the air source heat pump 3 and the third heat exchanger 43 are connected by the third main water pump 71 for the circulation of antifreeze solution (the route is shown in the attached diagram). Figure 1 (The three items indicated by the arrows in the middle)

[0048] The water flowing between the hot water storage tank 8 and the first heat exchanger 41, the second heat exchanger 42, and the third heat exchanger 43 can be ordinary municipal tap water. Water convection between the first heat exchanger 41 and the hot water storage tank 8 is achieved via a first auxiliary water pump 52, while water convection between the second heat exchanger 42 and the hot water storage tank 8 is achieved via a second auxiliary water pump 62, and water convection between the third heat exchanger 43 and the hot water storage tank 8 is achieved via a third auxiliary water pump 72. The hot water in the hot water storage tank 8 flows to the user via a hot water supply pipe, and after cooling at the user's location, it flows back to the hot water storage tank 8 via a return water pipe.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent modifications made based on the content of the present invention specification, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. An electrical-coupled and air-source heat pump coupled heating system, characterized in that, It includes an electrode boiler, a gas boiler, an air source heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, and a hot water storage tank. The electrode boiler is connected to the first heat exchanger via a pipe, the gas boiler is connected to the second heat exchanger via a pipe, the air source heat pump is connected to the third heat exchanger, and the first, second, and third heat exchangers are all connected to the hot water storage tank. The electrode boiler includes a furnace shell, electrode rods, baffles, ceramic packing, filter plates, and a thyristor power regulator. The electrode rods are disposed inside the furnace shell and are electrically connected to the thyristor power regulator. There are two filter plates disposed inside the furnace shell, and the two filter plates are parallel and do not contact each other. The ceramic packing is filled between the two filter plates. The bottom of the furnace shell has a water inlet and a water supply outlet, and the top of the furnace shell has a water outlet. The electrode rods are located between the water inlet and the water outlet, and the filter plates are located between the electrode rods and the water inlet. The baffles are disposed inside the furnace shell and are located between the water outlet and the top of the furnace shell. The thermal conductivity of the ceramic packing layer is relatively poor compared to that of the furnace shell. The ceramic packing layer acts as a heat storage medium. When water flows through the ceramic packing layer to the electrode rod and the zero-position electrode, the ceramic packing layer preheats the water.

2. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, The partition is parallel to the filter plate.

3. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, It also includes corrugated hoses, with corrugated hoses connected to both the inlet and outlet.

4. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, It also includes a zero-position electrode, which is disposed inside the furnace shell.

5. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, A water supply pipe is connected to the water inlet. The water supply pipe is circular and has a stud inside. The thread of the stud is close to the inner wall of the water supply pipe. The gap between the stud and the water supply pipe is the channel for water to enter the furnace shell. The stud is perpendicular to the filter plate.

6. The electrical and air-source heat pump coupled heating system as described in claim 5, characterized in that, The surface roughness Ra value of the stud is greater than 0.

8.

7. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, The furnace shell is provided with an inspection manhole.

8. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, It also includes a battery module, which is electrically connected to the air source heat pump.

9. The electrical and air-source heat pump coupling heating system as described in claim 1, characterized in that, It also includes a first main water pump, a first auxiliary water pump, a second main water pump, a second auxiliary water pump, a third main water pump, and a third auxiliary water pump. The first main water pump is connected to the first heat exchanger and the electrode boiler. The first auxiliary water pump is connected to the first heat exchanger and the hot water storage tank. The second main water pump is connected to the gas boiler and the second heat exchanger. The second auxiliary water pump is connected to the second heat exchanger and the hot water storage tank. The third main water pump is connected to the air source heat pump and the third heat exchanger. The third auxiliary water pump is connected to the third heat exchanger and the hot water storage tank.

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