Air energy heat pump combined with gas furnace heating system and method

Abstract

The application discloses an air energy heat pump and gas stove combined heating system and method, which comprises an air energy heat pump body, a water tank and a gas stove body, first connecting pipes are fixedly connected to the two sides of the water tank, a plurality of groups of heat conduction rods are fixedly connected in the water tank, the upper ends of the heat conduction rods are inserted into a connecting cavity, the connecting cavity is arranged in the upper end of the water tank, a plurality of groups of arc-shaped grooves are arranged in the upper side of the heat conduction rods, two groups of air inlet holes are arranged in the two ends of a connecting block, an air outlet pipe is fixedly connected to the side, away from the connecting block, of the connecting cavity, and a second connecting pipe is fixedly connected to the side, away from the water tank, of the air outlet pipe. When the temperature detector in the water tank detects that the water temperature discharged by the air energy heat pump body cannot reach the set temperature, the gas stove body is started to replace the function of supplying hot water into the water tank, the plurality of groups of heat conduction rods can absorb the heat of the hot water in the water tank and conduct the heat to the upper ends of the heat conduction rods, defrosting is realized quickly, and the heating efficiency of the air energy heat pump is improved.

Description

Technical Field

[0001] This invention relates to the field of combined heating system technology, specifically to a combined heating system and method of an air source heat pump and a gas furnace. Background Technology

[0002] With the continuous depletion of traditional fossil energy and the growing awareness of environmental protection, air source heat pumps, as a renewable energy source, have gradually gained attention from all sectors of society. Air source heat pumps have the advantages of being easy to use, having high energy efficiency, and being green and environmentally friendly. Air source heat pumps use the energy in the air to generate heat energy, providing a large volume of hot water, high water pressure, and constant temperature for the whole family 24 hours a day, while consuming the least amount of energy to meet the above requirements.

[0003] For example, Chinese patent CN111442318A discloses a combined heating system of an air source heat pump and a gas furnace, including an air source heat pump, a water tank, a gas furnace water heater and a heating mechanism. The water tank is equipped with a stirring mechanism for mixing and stirring, and a cleaning mechanism for cleaning is provided at the bottom of the water tank. A drainer is fixedly installed on the lower water inlet. A return water mechanism is provided on the side of the water tank. The outlet of the return water mechanism is connected to the top of the inner side of the water tank. The top of the water tank is equipped with an upper water inlet connected to the outlet of the return water mechanism.

[0004] However, the above solution has the following shortcomings: Although the use of gas boiler water heater and air heat pump in the above patent reduces the waste of electricity resources, the outdoor unit of the air heat pump is mostly located in the external environment. When the temperature in the external environment is low, the outdoor air-cooled heat exchanger located in the air heat pump will frost. The defrosting system inside the equipment cannot achieve fast defrosting, which reduces the heating efficiency of the air heat pump. Therefore, we have introduced a combined heating system and method of air heat pump and gas boiler. Summary of the Invention

[0005] The purpose of this invention is to provide a combined heating system and method for air source heat pump and gas furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A combined heating system of an air source heat pump and a gas furnace includes an air source heat pump body, a water tank, and a gas furnace body. First connecting pipes are fixedly connected to both sides of the water tank. The other ends of the two sets of first connecting pipes are fixedly connected to the air source heat pump body and the gas furnace body, respectively. Several sets of heat-conducting rods are fixedly connected inside the water tank. The upper ends of the heat-conducting rods extend into a connecting cavity, which is located in the upper part of the water tank. A water storage cavity is formed inside the heat-conducting rods, containing distilled water. A first vacuum cavity is provided outside the water storage cavity, located inside the heat-conducting rods. Several sets of arc-shaped grooves are formed on the upper side of the heat-conducting rods.

[0008] A connecting block is fixedly connected to one side of the connecting cavity. An air guide cavity is opened in the connecting block. A connecting rod is movably connected to the air guide cavity. Two sets of T-shaped sealing blocks are fixedly connected to both ends of the connecting rod. The T-shaped sealing blocks are snapped into the air inlets. The two sets of air inlets are opened in both ends of the connecting block. An air outlet pipe is fixedly connected to the side of the connecting cavity away from the connecting block. A second connecting pipe is fixedly connected to the side of the air outlet pipe away from the water tank. The end of the second connecting pipe away from the water tank is fixedly connected to the air inlet pipe. The air inlet pipe is fixedly connected to the upper end of the air source heat pump body.

[0009] Preferably, a support rod is fixedly connected inside both the air inlet pipe and the air outlet pipe, a fan is fixedly connected inside the support rod, a filter screen is fixedly connected to the end of the connecting block away from the water tank, and a temperature detector is fixedly connected to the lower side inside the water tank.

[0010] Preferably, a positioning block is fixedly sleeved on the outside of the connecting rod, the positioning block slides in the limiting cavity, the limiting cavity is opened in the connecting block, and a spring is sleeved on the outside of the connecting rod, one end of the spring is fixedly connected to the positioning block, and the other end is fixedly connected to the limiting cavity.

[0011] Preferably, a second vacuum chamber is provided inside the second connecting pipe. The side of the water tank away from the second connecting pipe is fixedly connected to the input end of the first three-way valve. One end of the first three-way valve is fixedly connected to the heating pipe, and the other end of the heating pipe is fixedly connected to the second three-way valve. Both ends of the second three-way valve are fixedly connected to water guide pipes. The other ends of the two sets of water guide pipes are respectively fixedly connected to the air source heat pump body and the gas furnace body.

[0012] Furthermore, to achieve the above objectives, the present invention also provides a method for combined heating of an air source heat pump and a gas furnace, used in the aforementioned combined heating system of an air source heat pump and a gas furnace, comprising the following steps:

[0013] S1. Turn on the air source heat pump body to heat the water source and discharge it into the water tank. The hot water in the water tank enters the heating pipe through the first three-way valve to heat the room. The water source passing through the heating pipe enters the air source heat pump body again after being converted by the second three-way valve. When the heat of the air source heat pump body decreases, the gas furnace body works to make the hot water produced enter the water tank.

[0014] S2. The fans in the air outlet and air inlet rotate. Under the suction of the two sets of fans, the T-shaped sealing block that is stuck in the air inlet is disengaged. The air outside enters the air guide chamber through the air inlet on the right side. The air that enters the air guide chamber enters the connecting chamber. The heat conduction rod in the water tank will absorb the heat emitted by the hot water.

[0015] S3. The distilled water in the water storage chamber is heated into steam and moves upward to heat the upper side of the heat-conducting rod. The air entering the connecting chamber passes through several sets of heat-conducting rods and is heated. The heated air enters the second connecting pipe and falls through the air inlet pipe onto the surface of the outdoor air-cooled heat exchanger in the air source heat pump body to melt the frost. After the frost melts, the air source heat pump body restarts and the gas furnace body shuts down.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the temperature detector in the water tank detects that the water temperature discharged from the air source heat pump body does not reach the set temperature, the gas furnace body will start to replace the function of supplying hot water to the water tank. At the same time, the rotation of the two sets of fans can disengage the T-shaped sealing block from the air inlet. At this time, the outside air will enter the connecting cavity. Several sets of heat-conducting rods can absorb the heat of the hot water inside the water tank and conduct it to its upper end. After the air in the connecting cavity is heated, it is blown to the surface of the outdoor air-cooled heat exchanger in the air source heat pump by the rotation of the two sets of fans, realizing rapid defrosting and improving the heating efficiency of the air source heat pump. Attached Figure Description

[0017] Figure 1 This is a top-section structural diagram of the present invention;

[0018] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the heat-conducting rod of the present invention;

[0020] Figure 4 This is a schematic diagram of the top section structure of the water tank of the present invention;

[0021] Figure 5 This is a cross-sectional view of the connecting block of the present invention.

[0022] In the diagram: 1. Air source heat pump body; 2. Inlet pipe; 3. Second connecting pipe; 4. Outlet pipe; 5. Connecting cavity; 6. Water tank; 7. Connecting block; 8. First connecting pipe; 9. Heat conducting rod; 10. First three-way valve; 11. Heating pipe; 12. Water guide pipe; 13. Gas furnace body; 14. Second three-way valve; 15. Second vacuum cavity; 16. Temperature detector; 17. Water storage cavity; 18. First vacuum cavity; 19. Arc groove; 20. Connecting rod; 21. Spring; 22. Limiting cavity; 23. Positioning block; 24. Filter screen; 25. Air inlet; 26. T-shaped sealing block; 27. Air guide cavity; 28. Support rod; 29. ​​Fan. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5 The present invention provides a technical solution: Example

[0025] A combined air source heat pump and gas furnace heating system includes an air source heat pump body 1, a water tank 6, and a gas furnace body 13. First connecting pipes 8 are fixedly connected to both sides of the water tank 6. The other ends of the two sets of first connecting pipes 8 are fixedly connected to the air source heat pump body 1 and the gas furnace body 13, respectively. When the air source heat pump body 1 is turned on, water entering it is heated. The heated water enters the water tank 6 through the left first connecting pipe 8 for storage. Hot water generated by the gas furnace body 13 enters the water tank 6 through the right first connecting pipe 8. The water tank 6 is fixedly connected to the air source heat pump body 1. A number of heat-conducting rods 9 are fixedly connected. The upper end of the heat-conducting rods 9 extends into the connecting cavity 5. The connecting cavity 5 is opened in the upper end of the water tank 6. A water storage cavity 17 is opened in the heat-conducting rods 9. Distilled water is stored in the water storage cavity 17. A first vacuum cavity 18 is provided outside the water storage cavity 17. The first vacuum cavity 18 is opened in the heat-conducting rods 9. The first vacuum cavity 18 can save the heat absorbed by the heat-conducting rods 9, so that the distilled water in the water storage cavity 17 can be evaporated quickly. The evaporated steam enters the upper end of the water storage cavity 17, and the cooled steam falls into the lower end along the interior of the water storage cavity 17.

[0026] Several sets of arc-shaped grooves 19 are opened on the upper side of the heat-conducting rod 9. The arc-shaped grooves 19 can increase the contact surface between the heat-conducting rod 9 and the air, thereby accelerating the heating of the air. A connecting block 7 is fixedly connected to one side of the connecting cavity 5. An air guide cavity 27 is opened in the connecting block 7. A connecting rod 20 is movably connected in the air guide cavity 27. Two sets of T-shaped sealing blocks 26 are fixedly connected to both ends of the connecting rod 20. The T-shaped sealing blocks 26 are engaged in the air inlet 25. Under the suction of the two sets of fans 29, the T-shaped sealing blocks 26 located in the air inlet 25 begin to move to the left. The movement of the T-shaped sealing blocks 26 drives the connecting rod 20 to move synchronously. At this time, under the drive of the connecting rod 20, the positioning block 23 begins to move to the left along the limiting cavity 22. At this time, the spring 21 is compressed, and the air in the external environment enters the air guide cavity 27 through the air inlet 25 on the right side.

[0027] Two sets of air inlets 25 are opened at both ends of the connecting block 7. The connecting cavity 5 is fixedly connected to the air outlet pipe 4 on the side away from the connecting block 7. The air outlet pipe 4 is fixedly connected to the second connecting pipe 3 on the side away from the water tank 6. The end of the second connecting pipe 3 away from the water tank 6 is fixedly connected to the air inlet pipe 2. The air inlet pipe 2 is fixedly connected to the upper end of the air source heat pump body 1. When the fan 29 located in the air inlet pipe 2 and the air outlet pipe 4 stops rotating, the two sets of T-shaped sealing blocks 26 will move to the right and re-lock into the air inlet 25 under the elastic force of the spring 21. Example

[0028] Based on Example 1, in order to ensure that the two sets of T-shaped sealing blocks 26 can always be locked into the air inlet 25 under normal conditions, and at the same time to allow the water entering the heating pipe 11 to be reused, support rods 28 are fixedly connected to the air inlet pipe 2 and the air outlet pipe 4. Fans 29 are fixedly connected to the support rods 28. A filter screen 24 is fixedly connected to the end of the connecting block 7 away from the water tank 6. A temperature detector 16 is fixedly connected to the lower side of the water tank 6. The specific model of the temperature detector 16 is MIK-WZP-PT100 produced by Hangzhou Meikong Automation Technology Co., Ltd. When the outdoor air-cooled heat exchanger of the air source heat pump body 1 frosts due to low temperature, resulting in a decrease in heating time, the temperature detector 16 located in the water tank 6 detects that the water temperature does not reach the set range for a long time. At this time, the temperature detector 16 will transmit a signal to the processor, and the processor will control the gas furnace body 13 to start working.

[0029] A positioning block 23 is fixedly sleeved on the outside of the connecting rod 20. The positioning block 23 slides in the limiting cavity 22, which is opened in the connecting block 7. A spring 21 is sleeved on the outside of the connecting rod 20. One end of the spring 21 is fixedly connected to the positioning block 23, and the other end is fixedly connected to the limiting cavity 22. When the fan 29 located in the air inlet pipe 2 and the air outlet pipe 4 stops rotating, the two sets of T-shaped sealing blocks 26 will move to the right and re-lock into the air inlet 25 under the elastic force of the spring 21.

[0030] A second vacuum chamber 15 is provided inside the second connecting pipe 3. The side of the water tank 6 away from the second connecting pipe 3 is fixedly connected to the input end of the first three-way valve 10. One end of the first three-way valve 10 is fixedly connected to the heating pipe 11, and the other end of the heating pipe 11 is fixedly connected to the second three-way valve 14. Both ends of the second three-way valve 14 are fixedly connected to water guide pipes 12. The other ends of the two sets of water guide pipes 12 are fixedly connected to the air source heat pump body 1 and the gas furnace body 13, respectively. By switching the two sets of second three-way valves 14 back and forth, the water source passing through the heating pipe 11 can enter the air source heat pump body 1 or the gas furnace body 13, so as to realize the reuse of water source.

[0031] Furthermore, to achieve the above objectives, the present invention also provides a method for combined heating of an air source heat pump and a gas furnace, used in the aforementioned combined heating system of an air source heat pump and a gas furnace, comprising the following steps:

[0032] S1. Turn on the air source heat pump body 1 to heat the water source and discharge it into the water tank 6. The hot water in the water tank 6 enters the heating pipe 11 through the first three-way valve 10 to heat the room. The water source passing through the heating pipe 11 re-enters the air source heat pump body 1 after being converted by the second three-way valve 14. When the heating capacity of the air source heat pump body 1 decreases, the gas furnace body 13 works to make the hot water produced enter the water tank 6.

[0033] S2, the fans 29 in the air outlet pipe 4 and the air inlet pipe 2 rotate. Under the suction of the two sets of fans 29, the T-shaped sealing block 26 located in the air inlet 25 is disengaged. The air outside passes through the air inlet 25 on the right and enters the air guide chamber 27. The air entering the air guide chamber 27 enters the connecting chamber 5. The heat conduction rod 9 located in the water tank 6 will absorb the heat emitted by the hot water.

[0034] S3. The distilled water in the water storage chamber 17 is heated into steam and moves upward to heat the upper side of the heat conduction rod 9. The air entering the connecting chamber 5 passes through several sets of heat conduction rods 9 and is heated. The heated air enters the second connecting pipe 3 and falls through the air inlet pipe 2 onto the surface of the outdoor air-cooled heat exchanger in the air source heat pump body 1 to melt the frost. After the frost melts, the air source heat pump body 1 restarts and the gas furnace body 13 is turned off.

[0035] Working principle: When in use, the air source heat pump body 1 is turned on to heat the water source entering it. The heated water source enters the water tank 6 through the first connecting pipe 8 on the left side for storage. The water source stored in the water tank 6 can enter the heating pipe 11 through the first three-way valve 10 to heat the room. The water source passing through the heating pipe 11 is converted by the second three-way valve 14 and then enters the air source heat pump body 1 through the corresponding water guide pipe 12 to achieve water source reuse. At the same time, by connecting the external water pipe to the first three-way valve 10, the water source in the water tank 6 can be exported for use.

[0036] When the outdoor air-cooled heat exchanger of the air source heat pump body 1 experiences frost formation due to low temperatures, resulting in a decrease in heating capacity, the temperature detector 16 located in the water tank 6 detects that the water temperature has not reached the set range for an extended period. At this time, the temperature detector 16 transmits a signal to the processor, which then controls the gas boiler body 13 to start operating. The hot water produced by this gas boiler enters the water tank 6 through the first connecting pipe 8, bringing the water temperature in the water tank 6 to the set value. Simultaneously, the air source heat pump body 1 shuts off, and the second three-way valve 14 switches the water supply from the heating pipe 11 to the gas boiler body 13. The fans 29 located in the air outlet pipe 4 and the air inlet pipe 2 start to rotate. The two sets of fans 29 rotate synchronously, causing the air in the connecting cavity 5 to be discharged into the surface of the outdoor air-cooled heat exchanger in the air source heat pump body 1. At this time, under the suction of the two sets of fans 29, the T-shaped sealing block 26 located in the air inlet 25 starts to move to the left. The movement of the T-shaped sealing block 26 drives the connecting rod 20 to move synchronously. At this time, under the drive of the connecting rod 20, the positioning block 23 starts to move to the left along the limiting cavity 22. At this time, the spring 21 is compressed, and the air in the external environment passes through the right air inlet 25 and enters the air guide cavity 27.

[0037] Air entering the air guide chamber 27 enters the connecting chamber 5 through the air inlet 25 on the right side. Due to the high water temperature in the water tank 6, several sets of heat-conducting rods 9 located in the water tank 6 begin to absorb the heat emitted by the hot water. Distilled water in the water storage chamber 17 moves upward as steam under the heating of the heat-conducting rods 9. The steam moving to the upper end of the water storage chamber 17 heats the heat-conducting rods 9. At this time, the air entering the connecting chamber 5 passes through the arc-shaped grooves 19 opened on the upper side of several sets of heat-conducting rods 9 and is heated. The heated air enters the second connecting pipe 3 and falls onto the surface of the outdoor air-cooled heat exchanger in the air source heat pump body 1 through the air inlet pipe 2, thus melting the frost. At the same time, the second vacuum chamber 15 opened in the second connecting pipe 3 can reduce the dissipation of air heat. When the frost melts, the air source heat pump body 1 restarts, and the gas furnace body 13 is turned off, realizing the combined use of the air source heat pump body 1 and the gas furnace body 13.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined air source heat pump and gas furnace heating system, comprising an air source heat pump body (1), a water tank (6), and a gas furnace body (13), characterized in that: The water tank (6) is fixedly connected to two sides of the first connecting pipe (8). The other ends of the two sets of first connecting pipes (8) are fixedly connected to the air source heat pump body (1) and the gas furnace body (13) respectively. Several sets of heat-conducting rods (9) are fixedly connected inside the water tank (6). The upper end of the heat-conducting rod (9) extends into the connecting cavity (5). The connecting cavity (5) is opened in the upper end of the water tank (6). A water storage cavity (17) is opened inside the heat-conducting rod (9). Distilled water is stored in the water storage cavity (17). A first vacuum cavity (18) is provided outside the water storage cavity (17). The first vacuum cavity (18) is opened inside the heat-conducting rod (9). Several sets of arc-shaped grooves (19) are opened on the upper side of the heat-conducting rod (9). A connecting block (7) is fixedly connected to one side of the connecting cavity (5). An air guide cavity (27) is opened in the connecting block (7). A connecting rod (20) is movably connected in the air guide cavity (27). Two sets of T-shaped sealing blocks (26) are fixedly connected to both ends of the connecting rod (20). The T-shaped sealing blocks (26) are snapped into the air inlet (25). The two sets of air inlets (25) are opened in both ends of the connecting block (7). An air outlet pipe (4) is fixedly connected to the side of the connecting cavity (5) away from the connecting block (7). A second connecting pipe (3) is fixedly connected to the side of the air outlet pipe (4) away from the water tank (6). The end of the second connecting pipe (3) away from the water tank (6) is fixedly connected to the air inlet pipe (2). The air inlet pipe (2) is fixedly connected to the upper end of the air source heat pump body (1).

2. The combined heating system of air source heat pump and gas furnace according to claim 1, characterized in that: A support rod (28) is fixedly connected inside the air inlet pipe (2) and the air outlet pipe (4). A fan (29) is fixedly connected inside the support rod (28). A filter screen (24) is fixedly connected to the end of the connecting block (7) away from the water tank (6). A temperature detector (16) is fixedly connected to the lower side inside the water tank (6).

3. The combined heating system of air source heat pump and gas furnace according to claim 1, characterized in that: A positioning block (23) is fixedly sleeved on the outside of the connecting rod (20). The positioning block (23) slides in the limiting cavity (22). The limiting cavity (22) is opened in the connecting block (7). A spring (21) is sleeved on the outside of the connecting rod (20). One end of the spring (21) is fixedly connected to the positioning block (23), and the other end is fixedly connected to the limiting cavity (22).

4. The combined heating system of air source heat pump and gas furnace according to claim 1, characterized in that: The second connecting pipe (3) has a second vacuum chamber (15) inside. The water tank (6) is fixedly connected to the input end of the first three-way valve (10) on the side away from the second connecting pipe (3). One end of the first three-way valve (10) is fixedly connected to the heating pipe (11), and the other end of the heating pipe (11) is fixedly connected to the second three-way valve (14). Both ends of the second three-way valve (14) are fixedly connected to water guide pipes (12). The other ends of the two sets of water guide pipes (12) are fixedly connected to the air source heat pump body (1) and the gas furnace body (13), respectively.

5. A method for combined heating of an air source heat pump and a gas furnace, used in the combined heating system of an air source heat pump and a gas furnace as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. Turn on the air source heat pump body (1) to heat the water source and discharge it into the water tank (6). The hot water in the water tank (6) enters the heating pipe (11) through the first three-way valve (10) to heat the room. The water source passing through the heating pipe (11) re-enters the air source heat pump body (1) after being converted by the second three-way valve (14). When the heating capacity of the air source heat pump body (1) decreases, the gas furnace body (13) works to make the hot water it produces enter the water tank (6). S2. The fans (29) in the air outlet pipe (4) and air inlet pipe (2) rotate. Under the suction of the two sets of fans (29), the T-shaped sealing block (26) located in the air inlet (25) is disengaged. The air outside passes through the air inlet (25) on the right and enters the air guide chamber (27). The air entering the air guide chamber (27) enters the connecting chamber (5). The heat conduction rod (9) located in the water tank (6) will absorb the heat emitted by the hot water. S3. The distilled water in the water storage chamber (17) is heated into steam and moves upward to heat the upper side of the heat-conducting rod (9). The air entering the connecting chamber (5) passes through several sets of heat-conducting rods (9) and is heated. The heated air enters the second connecting pipe (3) and falls through the air inlet pipe (2) onto the surface of the outdoor air-cooled heat exchanger in the air source heat pump body (1) to melt the frost. After the frost melts, the air source heat pump body (1) restarts and the gas furnace body (13) shuts down.

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