CN211177454U - Anti-freezing device of household air energy water heater - Google Patents
Anti-freezing device of household air energy water heater Download PDFInfo
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- CN211177454U CN211177454U CN201922379808.6U CN201922379808U CN211177454U CN 211177454 U CN211177454 U CN 211177454U CN 201922379808 U CN201922379808 U CN 201922379808U CN 211177454 U CN211177454 U CN 211177454U
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Abstract
The utility model discloses an anti-freezing device for a household air energy water heater, which comprises a temperature control switch, an electric three-way valve and a standby power supply; the standby power supply is arranged in an outdoor case of the air energy water heater and is connected with a household circuit; the temperature control switch is arranged at a circulating water outlet of the heat exchanger and is connected with the output end of the standby power supply; the electric three-way valve is arranged on the circulating water outlet pipe, two static contacts and one movable contact are arranged in the temperature control switch, and a control line of the electric three-way valve is connected with any one of the static contacts in the temperature control switch; and the lower outlet of the electric three-way valve is connected with a drain pipe. This domestic air can water heater freeze-proof device has effectively solved when the long-time not being at home of user, and the compressor can not keep normally open state, and takes place to freeze and splits and make the problem that the heat exchanger freezes because of the cold heat exchanger copper pipe that leads to of weather.
Description
Technical Field
The utility model relates to an air can water heater technical field, in particular to domestic air can water heater freeze-proof device.
Background
Air can water heater, also known as "air source heat pump water heater". The air energy water heater absorbs low-temperature heat in the air, the air is compressed by the compressor and then is pressurized and heated, and the compressed high-temperature heat energy is used for heating water temperature under the action of the heat exchanger.
The heat exchanger is one of important components of the air energy water heater, and comprises a circulating pipeline consisting of an inner pipe and an outer pipe, wherein water and a refrigerant respectively and oppositely flow in gaps between the inner pipe and the outer pipe to transfer heat. Generally, in order to ensure high heat transfer efficiency of the heat exchanger, the inner tube and the outer tube are usually made of copper materials. The heat exchangers are usually concentrated on the outdoor unit, when the air energy water heater is in a shutdown unused state and the temperature of the external environment is low, particularly under severe cold weather conditions in northeast China, the temperature of external water is kept below 0 ℃ for a long time, the water is frozen into ice after the temperature of the water is reduced to 0 ℃, and due to the fact that the densities of the water and the ice are different, the water in the same volume is frozen to expand, copper pipes are broken, and the heat exchangers are damaged.
In the prior art, in order to avoid the damage of the heat exchanger caused by the lower external temperature, the compressor is normally kept in a normally open state, and water in the heat exchanger can be heated in time to prevent freezing. However, the method has large power consumption and high use cost for users; meanwhile, when the user leaves home and goes out for a long time, the air energy water heater cannot be used, the household power supply of the whole household is usually turned off, the compressor cannot be kept in a normally open state at the moment, and the heat exchanger still has the risk of possible frost damage.
Thus, the prior art needs to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art's weak point, an object of the utility model is to provide a domestic air can water heater freeze-proof device, aim at solving when the long-time not at home of user, the compressor can not keep normally open state, and because of weather is cold, leads to the heat exchanger copper pipe to take place to freeze and splits the problem that makes the heat exchanger freeze.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the anti-freezing device of the household air energy water heater comprises an outdoor case and a water tank, wherein a heat exchanger is arranged in the outdoor case, the heat exchanger is connected with the water tank through a circulating water inlet pipe and a circulating water outlet pipe, and the anti-freezing device of the household air energy water heater comprises a temperature control switch, an electric three-way valve and a standby power supply; the standby power supply is arranged in the outdoor case and is connected with the household circuit; the temperature control switch is arranged at a circulating water outlet of the heat exchanger and is connected with the output end of the standby power supply; the electric three-way valve is arranged on the circulating water outlet pipe, two static contacts and one movable contact are arranged in the temperature control switch, and a control line of the electric three-way valve is connected with any one of the static contacts in the temperature control switch; the lower outlet of the electric three-way valve is connected with a drain pipe.
In the anti-freezing device for the household air energy water heater, the temperature control switch is provided with a thermistor.
In the anti-freezing device for the household air energy water heater, the standby power supply is provided with a control device.
In the anti-freezing device for the household air energy water heater, the standby power supply is provided with a heat-resistant protective cover.
In the anti-freezing device for the household air energy water heater, a capacitance protection device is arranged between the standby power supply and the temperature control switch.
In the anti-freezing device for the household air energy water heater, the anti-freezing device further comprises heat preservation cotton arranged around the circulating water inlet pipe and the circulating water outlet pipe.
In the anti-freezing device for the household air energy water heater, the trigger temperature of the temperature control switch is 0-5 ℃.
Advantageous effects
Compared with the prior art, the utility model provides a domestic air can water heater freeze-proof device is provided with the temperature detect switch who is used for the perception temperature and sets up electric three-way valve at circulating line through the circulation delivery port at the heat exchanger to set up stand-by power supply in the off-premises station, effectively solved when the user is not at home for a long time, the compressor can not keep normally open state, and takes place to freeze the problem of splitting and making the heat exchanger frost damage because of the cold heat exchanger copper pipe that leads to of weather.
Drawings
Fig. 1 is a schematic diagram of an anti-freezing device for a household air energy water heater provided by the present invention.
Fig. 2 is a schematic diagram provided by the present invention.
Detailed Description
The utility model provides a domestic air can water heater freeze-proof device, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses do further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 and 2, an anti-freezing device for a household air energy water heater is disclosed, wherein a conventional household air energy water heater generally comprises an outdoor cabinet 1 and a water tank 2, a heat exchanger (not shown in the drawings) is arranged in the outdoor cabinet 1, and the heat exchanger comprises a plurality of circulation pipelines; the heat exchanger is connected with the water tank 2 through a circulating water inlet pipe 3 and a circulating water outlet pipe 4.
The anti-freezing device of the household air energy water heater comprises a temperature control switch 5, an electric three-way valve 6 and a standby power supply 7; the standby power supply 7 is arranged in the outdoor case 1 of the air energy water heater and is connected with the household circuit to store electricity for the standby power supply; the temperature control switch 5 is arranged at a circulating water outlet of the heat exchanger, and the temperature control switch 5 can sense the water temperature in the circulating water outlet pipe 4 and is connected with the output end of the standby power supply 7; the electric three-way valve 6 is arranged on the circulating water outlet pipe 4, the inlet of the electric three-way valve 6 is right opposite to the circulating water outlet direction of the heat exchanger, the right outlet is right opposite to the inlet direction of the water tank, and the lower outlet is connected with a drain pipe 8, so that water in the heat exchanger can be drained conveniently in necessary time; two fixed contacts and a moving contact are arranged in the temperature control switch 5, and a control line of the electric three-way valve 6 is connected with any one fixed contact in the temperature control switch 5.
In some embodiments, when the temperature control switch 5 is lower than the trigger temperature, the movable contact is turned to the stationary contact connected with the control line of the electric three-way valve and is communicated with each other.
The utility model discloses a theory of operation: by providing the backup power supply 7 in the outdoor unit case 1, the backup power supply 7 can be used to drive the electric three-way valve 6. Because the standby power supply 7 is connected to the household circuit, when a user is not at home for a long time, the charging switch can be turned on indoors in advance to store electricity for the standby power supply 7 in advance. When the user leaves home, the backup power supply 7 can drive the electric three-way valve 6 as necessary even if the user turns off the main power switch at home. Meanwhile, a temperature control switch 5 is arranged at a circulating water outlet of the heat exchanger, and the temperature control switch 5 can sense the water temperature in the circulating water outlet pipe 4. When a user leaves home, devices such as a compressor and the like can not work any more, if the temperature of water in the circulating water outlet pipe 4 is higher than the critical temperature for triggering the temperature control switch 5, the temperature control switch 5 keeps the original state of being directly connected with the standby power supply 7 through the contact of a movable contact and a fixed contact, and meanwhile, the lower outlet of the electric three-way valve 6 is in a closed state; and once the outside air temperature drops, when the water temperature in the circulating water outlet pipe 4 drops to the critical temperature for triggering the temperature control switch 5, the original balance mode of the contact of the movable contact and the stationary contact is changed, the movable contact is rotated to the stationary contact connected with the control line of the electric three-way valve 6 and communicated with the stationary contact, the standby power supply 7 is communicated with the electric three-way valve 6, the electric three-way valve 6 is driven to adjust the position of the valve core, so that the right outlet is closed, the lower outlet is opened for drainage operation, the water in the heat exchanger is ensured to be drained in time before reaching the freezing point, and the copper pipe is prevented from being broken due to the fact that the water.
Because the demand of temperature detect switch 5 to the electric energy is not big, stand-by power supply 7 only need ensure can drive electronic three-way valve 6 when needing, therefore stand-by power supply 7's accumulate capacity need not too big, also accords with the domestic power consumption demand when being convenient for set up.
In some embodiments, the temperature controlled switch 5 is provided with a thermistor. The resistance of the thermistor can be changed along with the rise or the fall of the ambient temperature, so that the current of the original circuit is changed, the original balance is broken, and the temperature control switch 5 is triggered.
In some embodiments, the backup power supply 7 is provided with a control device, which is integrated in the control device of the indoor water heater and which is switched on when necessary to charge the backup power supply.
In certain embodiments, the backup power source 7 is provided with a heat resistant shield. The standby power supply 7 is arranged in the outdoor unit, is easily influenced by wind, rain and rain, is easy to generate potential safety hazards, and reduces potential safety hazards such as fire disasters and the like by arranging the heat-resistant protective cover.
In some embodiments, a capacitive protection device 9 for protecting the circuit of fig. 2 is provided between the backup power supply 7 and the temperature-dependent switch 5.
In some embodiments, the anti-freezing device further comprises heat insulation cotton arranged on the circulating water inlet pipe 3 and the circulating water outlet pipe 4, and the heat insulation cotton can reduce the heat conduction rate of the external air and the copper pipe and slow down the falling rate of the water temperature in the circulating water inlet pipe and the circulating water outlet pipe.
In certain embodiments, the trigger temperature of the temperature control switch 7 is 0-5 ℃, so that the water in the water pipe of the heat exchanger is discharged before reaching the freezing point in time.
To sum up, the utility model provides a domestic air can water heater freeze-proof device is provided with the temperature detect switch who is used for the perception temperature and sets up electric three-way valve at circulating line through the circulation delivery port at the heat exchanger to set up stand-by power supply in the off-premises station, effectively solved when the user is long-time not at home, the compressor can not keep normally open state, and takes place to freeze the problem of splitting and making the heat exchanger frost damage because of the cold heat exchanger copper pipe that leads to of weather.
It is understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications are intended to fall within the scope of the appended claims.
Claims (7)
1. The utility model provides a domestic air can water heater freeze-proof device, domestic air can water heater include outdoor quick-witted case and water tank, the quick-witted incasement of outdoor is equipped with the heat exchanger, through circulation inlet tube and circulation outlet pipe connection, its characterized in that between heat exchanger and the water tank: the anti-freezing device of the household air energy water heater comprises a temperature control switch, an electric three-way valve and a standby power supply; the standby power supply is arranged in the outdoor case and is connected with the household circuit; the temperature control switch is arranged at a circulating water outlet of the heat exchanger and is connected with the output end of the standby power supply; the electric three-way valve is arranged on the circulating water outlet pipe, two static contacts and one movable contact are arranged in the temperature control switch, and a control line of the electric three-way valve is connected with any one of the static contacts in the temperature control switch; the lower outlet of the electric three-way valve is connected with a drain pipe.
2. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: the temperature control switch is provided with a thermistor.
3. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: the standby power supply is provided with a control device.
4. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: the standby power supply is provided with a heat-resistant protective cover.
5. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: and a capacitance protection device is arranged between the standby power supply and the temperature control switch.
6. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: the anti-freezing device also comprises heat insulation cotton arranged around the circulating water inlet pipe and the circulating water outlet pipe.
7. A domestic air energy water heater de-icing apparatus as claimed in claim 1, wherein: the trigger temperature of the temperature control switch is 0-5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379808.6U CN211177454U (en) | 2019-12-25 | 2019-12-25 | Anti-freezing device of household air energy water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379808.6U CN211177454U (en) | 2019-12-25 | 2019-12-25 | Anti-freezing device of household air energy water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211177454U true CN211177454U (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922379808.6U Active CN211177454U (en) | 2019-12-25 | 2019-12-25 | Anti-freezing device of household air energy water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211177454U (en) |
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2019
- 2019-12-25 CN CN201922379808.6U patent/CN211177454U/en active Active
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