CN209893698U - Defrosting and freezing device and air source heat pump unit comprising same - Google Patents
Defrosting and freezing device and air source heat pump unit comprising same Download PDFInfo
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- CN209893698U CN209893698U CN201920563819.7U CN201920563819U CN209893698U CN 209893698 U CN209893698 U CN 209893698U CN 201920563819 U CN201920563819 U CN 201920563819U CN 209893698 U CN209893698 U CN 209893698U
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Abstract
The utility model discloses a defrosting device and an air source heat pump unit comprising the same, which has the technical proposal that the defrosting device comprises a spray pipe, the spray pipe is communicated with a hot water inlet pipeline or a hot water outlet pipeline of a water side heat exchanger of the air source heat pump unit, the spray pipe is arranged on a water pan or an evaporator of the air source heat pump unit, the spray pipe is provided with spray holes, and hot water sprayed out of the spray holes directly or indirectly flows into the water pan; the utility model provides an air source heat pump unit, includes water side heat exchanger, evaporimeter and water collector, the water side heat exchanger is equipped with hot water inlet channel and hot water outlet conduit, the water collector is installed the below of evaporimeter, include the defrosting freeze the device, avoid the defrosting water in the water collector to freeze, also can melt the discharge with the defrosting water that has frozen in the water collector.
Description
Technical Field
The utility model relates to a heat pump set technical field, more specifically say, it relates to a defrosting freezes device and air source heat pump set including the device.
Background
In the prior art, the condensed water of the air source heat pump unit can freeze on the water pan, and particularly, under the low-temperature environment and windy weather, the condensed water is not discharged from the water pan, and is condensed into ice by the low-temperature strong convection weather, so that a drain hole on the water pan is blocked. And along with the continuous operation of unit and the continuous production of defrosting water, the ice on the water collector can constantly accumulate the thickening, covers the chassis earlier, and continuous up increases again covers the heat exchanger, and along with the area increase that the heat exchanger is covered by the ice, heat transfer capacity descends, and evaporating pressure constantly reduces, finally can take place low pressure protection, leads to the unit can not normally work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a defrosting freezes device reaches the water collector of avoiding air source heat pump set and freezes, guarantees the purpose of unit normal work.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a defrosting freezes device which characterized in that: the spraying pipe is communicated with a hot water inlet pipeline or a hot water outlet pipeline of a water side heat exchanger of the air source heat pump unit, the spraying pipe is installed on a water receiving tray or an evaporator of the air source heat pump unit, the spraying pipe is provided with spraying holes, and hot water sprayed out of the spraying holes directly or indirectly flows into the water receiving tray.
As a further optimization, an electromagnetic valve is arranged between the spray pipe and a hot water inlet pipeline or a hot water outlet pipeline of the water side heat exchanger.
As a further optimization, the spraying holes are uniformly provided in plurality.
As a further optimization, when the spray pipe is installed on the water pan, the opening angle of the spray hole faces the water pan.
Preferably, the evaporator is a U-shaped evaporator, a V-shaped evaporator or a side air outlet evaporator.
As a further optimization, the water receiving tray is provided with a slope, and the lowest part of the water receiving tray is provided with a drain hole.
As a further optimization, the water pan is made of an aluminum-coated zinc plate.
The second purpose of the utility model is to provide an air source heat pump unit reaches and avoids the water collector to freeze, guarantees the purpose of unit normal work.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an air source heat pump unit, includes water side heat exchanger, evaporimeter and water collector, the water side heat exchanger is equipped with hot water inlet pipe and hot water outlet pipe, the water collector is installed the below of evaporimeter, its characterized in that: the defrosting device comprises the defrosting device of any one of the technical schemes.
As a further optimization, a check valve is arranged on the lowest loop of the evaporator; during heating operation, refrigerant coming out of the water side heat exchanger is blocked by the one-way valve when passing through the lowest loop of the evaporator; and when defrosting is performed, the one-way valve is conducted.
As further optimization, the water heater comprises a buffer water tank, wherein the buffer water tank is provided with a hot water inlet and a hot water outlet, the hot water inlet is communicated with the hot water outlet pipeline, and the hot water outlet is communicated with the hot water inlet pipeline.
To sum up, the utility model discloses following beneficial effect has: hot water is sprayed out of the spray holes of the spray pipe and directly or indirectly flows onto the water receiving tray, so that the frost water in the water receiving tray is prevented from freezing, and the frozen frost water in the water receiving tray can be melted and discharged.
Drawings
FIG. 1 is a system diagram of an air source heat pump unit in an embodiment;
FIG. 2 is an exploded view of the U-shaped evaporator and the water pan in the embodiment;
FIG. 3 is an exploded view of the evaporator and the drip tray in the embodiment;
fig. 4 is a schematic view illustrating the cooperation between the side-outlet evaporator and the water pan in the embodiment.
In the figure: 1. a buffer water tank; 11. a hot water outlet; 12. a hot water inlet; 2. a water circulating pump; 3. a water side heat exchanger; 31. a hot water inlet pipe; 32. a hot water outlet pipe; 4. a compressor; 5. an evaporator; 51. a U-shaped evaporator; 52. a V-shaped evaporator; 53. a side air-out evaporator; 6. a water pan; 61. a water pan; 62. a water pan; 621. a mounting seat; 622. a water receiving tank; 63. a water pan; 631. a water receiving groove; 7. a main path throttling element; 8. a shower pipe; 81. a shower pipe; 82. a shower pipe; 83. a shower pipe; 9. an electromagnetic valve; 100. a one-way valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a system connection relationship of an air source heat pump unit, which includes a buffer water tank 1, a circulating water pump 2, a water-side heat exchanger 3, a compressor 4, an evaporator 5 and a water pan 6 connected according to fig. 1. The working principle of the air source heat pump unit is as follows: the compressor 4 performs heating operation, high-temperature and high-pressure gaseous refrigerant is sent to the water side heat exchanger 3, in the water side heat exchanger 3, the high-temperature and high-pressure gaseous refrigerant heats water in the water side heat exchanger 3, the high-temperature and high-pressure refrigerant releases heat and is condensed into medium-temperature and high-pressure refrigerant, then the medium-temperature and high-pressure refrigerant flows to the evaporator 5, before entering the evaporator 5, the high-temperature and high-pressure refrigerant is throttled and reduced in pressure by the main path throttling element 7 to low-temperature and low-pressure gas-liquid two-phase refrigerant, the low-temperature and low-pressure gas-liquid two-phase refrigerant absorbs heat in the evaporator 5 and is evaporated into the low-temperature and low-pressure gaseous refrigerant, the gaseous refrigerant is sucked into a return port of the compressor 4, the compressor 4 compresses the low-temperature and. The buffer water tank 1 is provided with a hot water outlet 11 and a hot water inlet 12, the water side heat exchanger 3 is provided with a hot water inlet pipeline 31 and a hot water outlet pipeline 32, the hot water outlet 11 of the buffer water tank 1 is communicated with the hot water inlet pipeline 31 of the water side heat exchanger 3, water in the buffer water tank 1 is delivered into the water side heat exchanger 3 through the circulating water pump 2, and the hot water inlet 12 of the buffer water tank 1 is communicated with the hot water outlet pipeline 32 of the water side heat exchanger 3. Under the low temperature situation, this air source heat pump set generally heats the operation, and water side heat exchanger 3 produces hot water, and the problem of frequently opening of this air source heat pump set is solved in the setting of buffer tank 1, and buffer tank 1 can guarantee the hot water of capacity and supply the use.
Because the low-temperature and low-pressure gas-liquid two-phase refrigerant absorbs heat and evaporates in the evaporator 5, the surface temperature of the evaporator 5 is low, so that moisture in the air is frosted on the surface of the evaporator 5, and the moisture is continuously accumulated and thickened, the heat exchange between the refrigerant and the air is prevented, the unit cannot normally work in severe cases, in order to normally work, the unit needs to regularly remove the frost on the evaporator 5, and water generated by defrosting needs to be sequentially discharged, so that the normal and long-term operation of the unit can be normally ensured. The defrosting water tray 6 is arranged below the evaporator 5, defrosting water on the evaporator 5 flows to the defrosting water tray 6 and is discharged through a water discharging hole of the defrosting water tray 6. The water pan 6 is provided with a spray pipe 8, the spray pipe 8 is communicated with a hot water inlet pipe 31 or a hot water outlet pipe 32 of the water side heat exchanger 3, the temperature difference between the water temperature of the hot water inlet pipe 31 of the water side heat exchanger 3 and the water temperature in the hot water outlet pipe 32 is about 5 degrees, and therefore the hot water in the hot water inlet pipe 31 and the hot water outlet pipe 32 of the water side heat exchanger 3 can be used for spraying. The spray pipe 8 is provided with spray holes, and hot water sprayed from the spray holes flows into the water pan 6 to prevent defrosting water in the water pan 6 from freezing. An electromagnetic valve 9 is arranged between the spray pipe 8 and a hot water inlet pipeline 31 of the water side heat exchanger 3, when the evaporator 5 is defrosted, the electromagnetic valve 9 is opened, hot water is sprayed out of spray holes of the spray pipe 8, and defrosting water in the water pan 6 is prevented from freezing.
As an optimization, the heat exchange loop of the evaporator 5 is optimized, and a check valve 100 is added on the lowest loop of the evaporator 5. When the air source heat pump unit is used for heating, a refrigerant coming out of the water side heat exchanger 3 does not pass through a loop at the lowest end of the evaporator 5 due to the blocking effect of the one-way valve 100, a height difference can be formed between the refrigerant and a protective edge when the lowest end of the evaporator 5 is installed, and due to the blocking effect of the one-way valve 100, the loop at the lowest end of the evaporator 5 cannot participate in evaporation heat exchange of the refrigerant, so that the loop at the lowest end of the evaporator 5 keeps the temperature close to the environment, and the loop cannot frost; when the air source heat pump unit defrosts, the check valve 100 is conducted, the high-temperature and high-pressure refrigerant of the compressor 4 passes through the lowest loop of the evaporator 5, because the lowest loop of the evaporator 5 does not participate in heating operation, a frost layer cannot be attached to fins, the lowest loop of the evaporator 5 can keep high temperature, and defrosting water generated after defrosting of all loops on the upper portion of the evaporator 5 passes through the fins of the loop and then flows onto the water receiving disc 6 to be discharged from a water discharging hole of the water receiving disc 6, so that the lowest loop of the evaporator 5 can secondarily heat all the defrosting water, the defrosting water is kept to have high temperature after leaving the evaporator 5, and rapid icing is avoided.
Preferably, the water receiving tray 6 is made of an aluminum-zinc-coated plate, the wettability of water of the aluminum-zinc-coated plate is poor, and water can flow away quickly. The water pan 6 is provided with a slope, the drain hole is arranged at the lowest part of the water pan 6, and the defrosting water is quickly drained away under the action of gravity. A plurality of spraying holes are uniformly arranged on the spraying pipe 8, and the opening angles of the spraying holes are opposite to the water pan 6. Evaporator 5 is preferably U type evaporator 51, V type evaporator 52 or side air-out evaporator 53, and the structure of water collector 6 is optimally designed corresponding to different types of evaporator 5, and the concrete is as follows: when the evaporator 5 is a U-shaped evaporator 51, as shown in fig. 2, the middle of the water pan 61 protrudes to form slopes on both sides, two U-shaped spray pipes 81 are arranged on the water pan 61, and the U-shaped evaporators 51 can be used by combining two evaporators; when the evaporator 5 is a V-shaped evaporator 52, as shown in fig. 3, the water receiving tray 62 includes a mounting seat 621 and two front and rear water receiving tanks 622, spray pipes 82 are mounted on the front and rear sides of the mounting seat 621, defrosting water flows into the water receiving tanks 622 from the mounting seat 621 through the lower portions of the spray pipes 82, and the opening angles of the spray holes of the spray pipes 82 are opposite to the mounting seat 621; when the evaporator 5 is the side-outlet evaporator 53, as shown in fig. 4, a water receiving groove 631 is disposed in the water receiving tray 63.
In other embodiments, the shower pipe 8 may be installed on the evaporator 5, and hot water sprayed from the shower holes of the shower pipe 8 defrosts and defrosts the evaporator 5 and indirectly flows into the water pan 6.
The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the above embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.
Claims (10)
1. The utility model provides a defrosting freezes device which characterized in that: the spraying pipe is communicated with a hot water inlet pipeline or a hot water outlet pipeline of a water side heat exchanger of the air source heat pump unit, the spraying pipe is installed on a water receiving tray or an evaporator of the air source heat pump unit, the spraying pipe is provided with spraying holes, and hot water sprayed out of the spraying holes directly or indirectly flows into the water receiving tray.
2. The defrost device of claim 1, wherein: and an electromagnetic valve is arranged between the spray pipe and a hot water inlet pipeline or a hot water outlet pipeline of the water side heat exchanger.
3. The defrost device of claim 1, wherein: the spraying holes are uniformly provided with a plurality of spraying holes.
4. The defrost device of claim 1, wherein: when the spray pipe is arranged on the water pan, the opening angle of the spray hole faces the water pan.
5. The defrost device of claim 1, wherein: the evaporator is a U-shaped evaporator, a V-shaped evaporator or a side air outlet evaporator.
6. The defrost device of claim 1, wherein: the water pan is provided with a slope, and the lowest part of the water pan is provided with a drain hole.
7. The defrost device of claim 1, wherein: the water pan is made of an aluminum-coated zinc plate.
8. The utility model provides an air source heat pump unit, includes water side heat exchanger, evaporimeter and water collector, the water side heat exchanger is equipped with hot water inlet pipe and hot water outlet pipe, the water collector is installed the below of evaporimeter, its characterized in that: comprising a defrost device according to any one of claims 1-7.
9. The air source heat pump unit of claim 8, wherein: a check valve is arranged on the lowest loop of the evaporator; during heating operation, refrigerant coming out of the water side heat exchanger is blocked by the one-way valve when passing through the lowest loop of the evaporator; and when defrosting is performed, the one-way valve is conducted.
10. The air source heat pump unit of claim 8, wherein: the hot water outlet pipe is communicated with the hot water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563819.7U CN209893698U (en) | 2019-04-23 | 2019-04-23 | Defrosting and freezing device and air source heat pump unit comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563819.7U CN209893698U (en) | 2019-04-23 | 2019-04-23 | Defrosting and freezing device and air source heat pump unit comprising same |
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| CN209893698U true CN209893698U (en) | 2020-01-03 |
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| CN201920563819.7U Active CN209893698U (en) | 2019-04-23 | 2019-04-23 | Defrosting and freezing device and air source heat pump unit comprising same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611072A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Control method of cooling and heating air conditioner |
| CN115059973A (en) * | 2022-06-27 | 2022-09-16 | 湘南学院 | Ground source heat pump energy-saving air conditioner applying fuzzy mathematics |
-
2019
- 2019-04-23 CN CN201920563819.7U patent/CN209893698U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611072A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Control method of cooling and heating air conditioner |
| CN115059973A (en) * | 2022-06-27 | 2022-09-16 | 湘南学院 | Ground source heat pump energy-saving air conditioner applying fuzzy mathematics |
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