An air source heat pump system configured with an auxiliary heat source defrost evaporator

Abstract

The application relates to the technical field of air source heat pump, in particular to an air source heat pump system with an auxiliary heat source defrosting evaporator, which comprises an outer machine, an exhaust plate with multiple small holes is fixedly connected to the rear side of the outer machine, a heat absorber is fixedly connected to the rear side of the exhaust plate, and a gas outlet pipe is fixedly connected to the rear side of the heat absorber; the air source heat pump system further comprises an inner machine, a filter screen is fixedly connected to the lower side of the inner machine, the gas outlet pipe is connected with a distribution seat through a connecting pipe, defrosting pipes are fixedly connected to the two sides of the distribution seat, defrosting plates are fixedly connected to the ends of the two defrosting pipes, and the defrosting plates are placed below the filter screen; a heat collection bin is slidably connected in the heat absorber, two air inlet windows are formed in the front end of the heat collection bin, an air outlet pipe is fixedly connected to the rear end of the heat collection bin, and the air outlet pipe is slidably connected in the gas outlet pipe; a zigzag-shaped water storage bin is fixedly connected in the heat collection bin, air channels are formed in the outer side of the water storage bin, and the two air inlet windows are communicated with the air outlet pipe through the air channels; two springs are fixedly connected between the heat collection bin and the heat absorber, and the air source heat pump system has the beneficial effect that the ice and frost on the surface of the evaporator can be removed in time.

Description

Technical Field

[0001] This invention relates to the field of air source heat pump technology, and more specifically to an air source heat pump system equipped with an auxiliary heat source defrosting evaporator. Background Technology

[0002] An air source heat pump is an energy regeneration device that uses air heat energy for heating. Its working principle is the reverse Carnot cycle. It only requires a small amount of electricity to drive the compressor to compress and rub the air, which is not hot, so that it is heated. This degraded air condenses when it encounters cold air and then evaporates to dissipate heat. The cycle is repeated, thereby extracting the heat energy in the air for direct use.

[0003] When the evaporator temperature of an air source heat pump is lower than the dew point temperature of the air, water will condense on the evaporator surface. If the ambient temperature is also close to or below 0°C, frost will easily form on the evaporator surface, affecting the efficiency of the heat pump. Defrosting needs to be performed in a timely manner to ensure the normal operation of the air source heat pump. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an air source heat pump system with an auxiliary heat source defrosting evaporator, which has the advantage of facilitating the timely removal of frost from the evaporator surface.

[0005] An air source heat pump system with an auxiliary heat source defrosting evaporator includes an outdoor unit, an exhaust plate with multiple small holes fixed to the rear of the outdoor unit, a heat absorber fixed to the rear of the exhaust plate, and an air outlet pipe fixed to the rear of the heat absorber. The system also includes an indoor unit, a filter fixed to the lower side of the indoor unit, and an air outlet pipe connected to a distribution seat via a connecting pipe. Defrosting pipes are fixed to both sides of the distribution seat, and defrosting plates are fixed to the ends of the two defrosting pipes. The defrosting plates are placed below the filter.

[0006] Furthermore, the heat absorber has a heat collection chamber that is slidably connected inside. The front end of the heat collection chamber has two air inlets, and the rear end of the heat collection chamber is fixedly connected to an air outlet pipe, which is slidably connected inside the air outlet pipe.

[0007] Furthermore, a tortuous water storage tank is fixed inside the heat collection chamber, and an air duct is machined on the outside of the water storage tank. Two air inlets are connected to the air outlet pipe through the air duct.

[0008] Furthermore, two springs are fixedly connected between the heat collection chamber and the heat absorber. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0010] Figure 1 This is a schematic diagram of the air source heat pump system with an auxiliary heat source defrosting evaporator in this invention;

[0011] Figure 2 This is an internal diagram of the air source heat pump system with an auxiliary heat source defrosting evaporator configured in this invention;

[0012] Figure 3 This is a schematic diagram of the structure of the indoor unit and the outdoor unit in this invention;

[0013] Figure 4 This is a schematic diagram of the structure of the indoor and outdoor units in another direction in this invention;

[0014] Figure 5 This is a schematic diagram of the heat absorber in this invention;

[0015] Figure 6 This is a cross-sectional view of the heat absorber and heat collection chamber in this invention;

[0016] Figure 7 This is a cross-sectional view of the heat absorber in this invention;

[0017] Figure 8 This is a schematic diagram of the heat collection chamber in this invention;

[0018] Figure 9 This is a cross-sectional view of the heat collection chamber in this invention;

[0019] Figure 10 This is a schematic diagram of the structure of the distributor and the defrosting plate in this invention;

[0020] Figure 11 This is a schematic diagram of the support rod in this invention;

[0021] Figure 12 This is a schematic diagram of the support rod and drainage ring in this invention.

[0022] In the diagram: Outdoor unit 101; Exhaust plate 102; Indoor unit 103; Filter screen 104; Insulation compartment 105; Adjustment window 106; Connecting pipe 107;

[0023] Heat absorber 201; exhaust pipe 202; filter plate 203; spring 204;

[0024] 301 heat collection chamber; 302 air outlet duct; 303 air inlet window; 304 water storage chamber; 305 air duct;

[0025] Distribution seat 401; defrosting pipe 402; defrosting plate 403; water trough 404; support rod 405; water receiving tray 406; drain pipe 407; drain ring 408; water outlet pipe 409. Detailed Implementation

[0026] like Figure 1-7 As shown in Figure 10, this example can achieve the effect of easily and promptly removing frost from the surface of the evaporator.

[0027] The air source heat pump system, equipped with an auxiliary heat source defrosting evaporator, includes an outdoor unit 101. An exhaust plate 102 with multiple small holes is fixedly connected to the rear of the outdoor unit 101. A heat absorber 201 is fixedly connected to the rear of the exhaust plate 102, and an exhaust pipe 202 is fixedly connected to the rear of the heat absorber 201. It also includes an indoor unit 103, with a filter 104 fixedly connected to its lower side. The exhaust pipe 202 is connected to a distribution seat 401 via a connecting pipe 107. Defrosting pipes 402 are fixedly connected to both sides of the distribution seat 401, and defrosting plates 403 are fixedly connected to the ends of the two defrosting pipes 402, placed below the filter 104. After the outdoor unit 101 is started, the fan inside the outdoor unit 101 drives air to flow from the front to the rear of the outdoor unit 101, and the air then condenses inside the outdoor unit 101. The air is heated by the condenser and then enters the absorber 201 through the exhaust plate 102 at the rear of the outdoor unit 101. The heated air is accelerated and kept warm in the absorber 201. Then, the air is pushed from the exhaust pipe 202 into the connecting pipe 107 by the fan inside the outdoor unit 101. The heated air enters the distribution seat 401 and is evenly divided into two parts by the distribution seat 401 and enters the defrost pipe 402. The defrost pipe 402 contacts the defrost plate 403 at the end and heats the defrost plate 403. The heated defrost plate 403 raises the air near the filter 104, which facilitates the melting of frost on the evaporator of the indoor unit 103 and achieves the effect of timely removal of frost on the surface of the evaporator.

[0028] Through the heat absorption and heat transfer of the heat absorber 201 and the distribution seat 401, the heat lost by the evaporator is collected and transferred to the defrosting plate 403 below the frosted evaporator. The defrosting plate 403 is then heated to assist in the defrosting of the evaporator, thereby saving energy consumption for melting the frost on the evaporator. At the same time, the defrosting plate 403 serves as an auxiliary heat source, which can promptly utilize the heat lost by the condenser, thus facilitating the timely removal of frost from the evaporator surface.

[0029] like Figure 1-9 As shown, this example can achieve the effect of absorbing the heat lost by the condenser of outdoor unit 101.

[0030] Since the heat absorber 201 has a heat collection chamber 301 slidably connected inside, and the heat collection chamber 301 has two air inlets 303 processed at the front end, and the heat collection chamber 301 has an air outlet pipe 302 fixedly connected at the rear end, the air outlet pipe 302 is slidably connected inside the air outlet pipe 202; the fan of the outdoor unit 101 blows the heated gas near the condenser into the air inlets 303, and then the heat collection chamber 301 keeps the heated gas warm, thereby preventing the temperature of the heated gas from dropping, and then it enters the air outlet pipe 202 through the air outlet pipe 302, and then enters the distribution seat 401 through the connecting pipe 107, thereby achieving the effect of absorbing the heat lost by the condenser of the outdoor unit 101.

[0031] like Figure 1-9 As shown, this example can achieve the effect of maintaining the internal gas temperature of the heat collection chamber 301.

[0032] Because a tortuous water storage tank 304 is fixedly connected inside the heat collection chamber 301, and an air duct 305 is machined on the outside of the water storage tank 304, and two air inlets 303 are connected to the air outlet pipe 302 through the air duct 305; water is filled in the water storage tank 304. When heated gas enters the air duct 305 through the air inlet 303, it flows in the air duct 305 and heats the water in the water storage tank 304 through heat exchange. Because water has a large specific heat capacity, the water temperature is not easily changed, so the water in the water storage tank 304 near the air outlet pipe 302 can still maintain a high temperature, thereby heating the gas passing near the air outlet pipe 302 and maintaining the temperature of the gas at the air outlet pipe 302. The tortuous water storage tank 304 increases the contact area between the air duct 305 and the water storage tank 304, making it easier to heat the water storage tank 304, thereby achieving the effect of maintaining the temperature of the gas inside the heat collection chamber 301.

[0033] Meanwhile, after the gas enters the air passage 305 through the exhaust plate 102, the cross-sectional area of ​​the gas flow decreases, thereby increasing the gas flow rate and reducing the time for the gas to lose heat to the outside, thus further achieving the effect of maintaining the gas temperature inside the heat collection chamber 301.

[0034] like Figure 1-9 As shown, this example can achieve the effect of preventing damage to the 304 water storage tank.

[0035] Because two springs 204 are fixedly connected between the heat collection chamber 301 and the heat absorber 201, when the heat absorber 201 is impacted, relative sliding occurs between the heat collection chamber 301 and the heat absorber 201. Simultaneously, the air outlet pipe 302 slides inside the air outlet pipe 202, thereby compressing or stretching the springs 204. The compressed or stretched springs 204, through elastic deformation, generate a spring force that pushes the heat collection chamber 301 in the opposite direction, thus preventing relative movement between the heat collection chamber 301 and the heat absorber 201, thereby facilitating heat collection... The relative sliding between the heat collection chamber 301 and the heat absorber 201 provides a buffer, thereby preventing the heat collection chamber 301 and the heat absorber 201 from colliding, and thus preventing damage to the water storage chamber 304. At the same time, the spring 204 allows the relative sliding between the heat collection chamber 301 and the heat absorber 201, thereby preventing the impact on the heat absorber 201 from directly acting on the heat collection chamber 301, and further preventing the water storage chamber 304 from being damaged by the impact, thus achieving the effect of preventing the water storage chamber 304 from breaking.

[0036] like Figure 1-9 As shown, this example can achieve the effect of avoiding airway 305 blockage.

[0037] Because the front end of the heat absorber 201 is fixedly connected to a filter plate 203 with multiple small holes, the gas passing through the exhaust plate 102 needs to pass through the filter plate 203 before entering the heat absorber 201. This filters out impurities in the gas blown in by the fan of the outdoor unit 101, thereby preventing dust and other impurities from entering the air inlet 303 of the heat collection chamber 301 and preventing impurities from entering the air passage 305 and blocking it, thus avoiding poor gas flow and achieving the effect of preventing the air passage 305 from being blocked.

[0038] like Figure 1-5 As shown in Figures 10-12, this example can achieve the effect of collecting water droplets after the frost melts on the surface of the evaporator.

[0039] Since a support rod 405 is fixedly connected to the upper side of the distribution seat 401, and a water receiving tray 406 is fixedly connected to the top of the support rod 405, and a defrosting plate 403 is placed above the water receiving tray 406; the water receiving tray 406 is fixed below the filter screen 104 of the indoor unit 103 by the support rod 405, so that the frost on the surface of the evaporator melts and drips into the water receiving tray 406. At the same time, the defrosting plate 403 above the water receiving tray 406 can receive the ice that has not yet melted but has fallen, and then melt the ice with the temperature of the defrosting plate 403, and then collect the melted frost, avoiding environmental pollution, and thus achieving the effect of collecting water droplets after the frost on the surface of the evaporator melts.

[0040] like Figure 1-5 As shown in Figures 10-12, this example can facilitate the treatment of wastewater inside the water receiving tray 406.

[0041] Because the support rod 405 has a drain pipe 407 inside, and the top of the drain pipe 407 is connected to the water receiving tray 406; the wastewater inside the water receiving tray 406 flows downward inside the support rod 405 through the drain pipe 407, and then is discharged through the end of the drain pipe 407. Since the indoor unit 103 is installed at a high position, it is convenient to discharge the wastewater inside the water receiving tray 406 at a lower position, thereby achieving the effect of convenient treatment of the wastewater inside the water receiving tray 406.

[0042] like Figure 1-5 As shown in Figures 10-12, this example demonstrates how drainage can be easily controlled.

[0043] Because the lower part of the support rod 405 is rotatably connected to a drain ring 408, and a water outlet pipe 409 is fixedly connected to the drain ring 408, with the end of the water outlet pipe 409 connected to the drain pipe 407; when the drain ring 408 is rotated so that the ends of the water outlet pipe 409 and the drain pipe 407 are not on the same plane, the drain ring 408 blocks the end of the drain pipe 407, thereby preventing wastewater from being discharged through the drain pipe 407, thus achieving the effect of closing the drain pipe 407; when the ends of the water outlet pipe 409 and the drain pipe 407 are on the same plane, the end of the water outlet pipe 409 is connected to the drain pipe 407, and wastewater can enter the water outlet pipe 409 through the end of the drain pipe 407, thereby discharging the wastewater, thus achieving the effect of opening the drain pipe 407 for drainage, and the drainage can be controlled by adjusting the rotation angle of the drain ring 408, thus achieving the effect of easy drainage control.

[0044] like Figure 1-5 As shown in Figures 10-12, this example can facilitate the collection of melted frost.

[0045] Because the defrosting plate 403 has multiple water channels 404, when the frost melted by the high temperature of the defrosting plate 403 drips down onto the defrosting plate 403, the water dripping from the top of the defrosting plate 403 is facilitated by the multiple water channels 404, and the melted ice water is facilitated to fall into the water receiving tray 406, thereby achieving the effect of facilitating the collection of melted frost.

[0046] like Figure 1-5 As shown in Figures 10-12, this example demonstrates how to improve defrosting capabilities.

[0047] Since a heat insulation chamber 105 is fixedly connected between the defrosting plate 403 and the distribution seat 401, and an adjustment window 106 is machined on the heat insulation chamber 105, and the water outlet pipe 409 is slidably connected in the adjustment window 106; the heat insulation chamber 105 separates the components between the defrosting plate 403 and the distribution seat 401 from the outside world, thereby preventing heat loss to the outside world, and making it easier for the defrosting pipe 402 to heat the defrosting plate 403, thereby maintaining the temperature of the defrosting plate 403, and thus achieving the effect of improving the defrosting capacity.

[0048] The adjustment window 106 restricts the rotation angle of the outlet pipe 409, thereby restricting the rotation angle of the drain ring 408, thus preventing the outlet pipe 409 from entering the insulation chamber 105 after rotation. At the same time, the adjustment window 106 serves as a reference, making it easier to observe the rotation angle of the outlet pipe 409, thus making it easier to confirm whether the outlet pipe 409 is open for drainage, thereby preventing the drain pipe 407 from being accidentally opened and causing sewage discharge, which would pollute the external environment.

Claims

1. An air-source heat pump system equipped with an auxiliary heat source defrosting evaporator, characterized in that: The system includes an outdoor unit (101), an exhaust plate (102) with multiple small holes fixed to the rear side of the outdoor unit (101), a heat absorber (201) fixed to the rear side of the exhaust plate (102), and an air outlet pipe (202) fixed to the rear side of the heat absorber (201). The system also includes an indoor unit (103), a filter screen (104) fixed to the lower side of the indoor unit (103), and an air outlet pipe (202) connected to a distribution seat (401) via a connecting pipe (107). Defrosting pipes (402) are fixed to both sides of the distribution seat (401), and defrosting plates (403) are fixed to the ends of the two defrosting pipes (402). The defrosting plates (403) are placed below the filter screen (104). The heat absorber (201) has a heat collection chamber (301) slidably connected inside. The heat collection chamber (301) has two air inlets (303) machined at the front end. The heat collection chamber (301) has an air outlet pipe (302) fixedly connected at the rear end. The air outlet pipe (302) is slidably connected inside the air outlet pipe (202). The heat collection chamber (301) has a tortuous water storage chamber (304) fixed inside. The water storage chamber (304) has an air duct (305) processed on the outside. Two air inlets (303) are connected to the air outlet pipe (302) through the air duct (305). Two springs (204) are fixedly connected between the heat collection chamber (301) and the heat absorber (201). The front end of the heat absorber (201) is fixedly connected to a filter plate (203) with multiple small holes. A support rod (405) is fixedly connected to the upper side of the distribution seat (401), and a water receiving tray (406) is fixedly connected to the top of the support rod (405). The defrosting plate (403) is placed above the water receiving tray (406).

2. An air source heat pump system with an auxiliary heat source defrosting evaporator as described in claim 1, characterized in that: The support rod (405) has a drain pipe (407) inside, and the top of the drain pipe (407) is connected to the water receiving tray (406).

3. An air source heat pump system with an auxiliary heat source defrosting evaporator as described in claim 2, characterized in that: The lower part of the support rod (405) is rotatably connected to a drainage ring (408), and a water outlet pipe (409) is fixedly connected to the drainage ring (408). The end of the water outlet pipe (409) is connected to the drainage pipe (407).

4. An air source heat pump system with an auxiliary heat source defrosting evaporator as described in claim 3, characterized in that: The defrosting plate (403) is machined with multiple water passage grooves (404).

5. An air source heat pump system with an auxiliary heat source defrosting evaporator as described in claim 4, characterized in that: A heat insulation chamber (105) is fixedly connected between the defrosting plate (403) and the distribution seat (401). An adjustment window (106) is machined on the heat insulation chamber (105), and the water outlet pipe (409) is slidably connected inside the adjustment window (106).

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