CN211552039U - Water tank and heat pump hot water system - Google Patents
Water tank and heat pump hot water system Download PDFInfo
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- CN211552039U CN211552039U CN201921888580.7U CN201921888580U CN211552039U CN 211552039 U CN211552039 U CN 211552039U CN 201921888580 U CN201921888580 U CN 201921888580U CN 211552039 U CN211552039 U CN 211552039U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 445
- 238000010438 heat treatment Methods 0.000 claims abstract description 264
- 239000008236 heating water Substances 0.000 claims abstract description 8
- 230000003993 interaction Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 238000010257 thawing Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
The application relates to a water tank and heat pump hot water system, the water tank includes: a water tank inner container; the first heat exchanger is arranged on the water tank inner container; the first heat exchanger is wound on the inner container of the water tank and is used for heating water in the water tank; the water tank inner container is provided with a water circulation outlet and a water circulation inlet; the water circulation outlet and the water circulation inlet are used for being communicated with the circulation heating device, so that the water in the water tank is sucked out from the water circulation outlet by the circulation heating device, heated and then conveyed back to the water tank from the water circulation inlet. When needs heating, can be when first heat exchanger heating water tank normal water, make circulation heating device with the water in the water tank follow hydrologic cycle export suction and heating back according to the demand, export back to the water tank from the hydrologic cycle entry, so, alright in order to accelerate the speed to the water heating in the water tank, shorten heating time, satisfy the user fast to a large amount of hydrothermal demands.
Description
Technical Field
The application relates to the technology of hot water systems, in particular to a water tank and a heat pump hot water system.
Background
In order to meet the demand of people for hot water, heat pump hot water systems are increasingly widely used. At present, an existing heat pump hot water system is generally provided with a water tank for storing hot water, and water in the water tank is heated through a heating mechanism so as to obtain required hot water. In order to meet the greater demand of users for hot water, a large-volume water tank is often configured, and as the amount of water in the water tank increases, the time for the heating mechanism to heat the water in the large-volume water tank to a desired temperature is also prolonged, so that the heating waiting time becomes longer.
SUMMERY OF THE UTILITY MODEL
To overcome, at least to some extent, the problems in the related art, the present application provides a water tank and heat pump hot water system.
According to a first aspect of the present application, there is provided a water tank comprising:
a water tank inner container;
the first heat exchanger is arranged on the water tank inner container; the first heat exchanger is wound on the water tank inner container and used for heating water in the water tank;
the water tank inner container is provided with a water circulation outlet and a water circulation inlet; the water circulation outlet and the water circulation inlet are used for being communicated with a circulation heating device, so that the water in the water tank is sucked out from the water circulation outlet and heated by the circulation heating device, and then is conveyed back to the water tank from the water circulation inlet.
Optionally, the first heat exchanger and the water circulation outlet are respectively disposed at two ends of the water tank.
Optionally, the first heat exchanger is arranged at one end of the water tank far away from the ground when the water tank is in an installation completion state.
Optionally, the water circulation inlet comprises a first water circulation sub-inlet and a second water circulation sub-inlet;
the first water circulation sub-inlet is arranged at one end of the water tank with the water circulation outlet; the second water circulation sub-inlet is arranged at one end of the water tank, which is provided with the first heat exchanger; so that the water heated by the circulation heating device is input back to the water tank from the first water circulation sub-inlet and/or the second water circulation sub-inlet.
According to a second aspect of the present application, there is provided a heat pump hot water system comprising:
a water tank as described in the first aspect of the present application;
the circulating heating device is connected with the water circulating outlet and the water circulating inlet;
a heating medium processing device for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve; the first heating medium output end is communicated with the second heating medium input end through a second valve; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end.
Optionally, the system further includes:
the human-computer interaction end is used for generating the expected temperature signal and the set mode signal according to the operation of a user;
the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank;
and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor and the second temperature sensor, the expected temperature signal and the set mode signal.
Optionally, the circulation heating device includes:
a second heat exchanger and a water pump;
the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end;
the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and inputting the water back to the water tank through the heat exchange output end and the water circulation inlet.
According to a third aspect of the present application, there is provided a heat pump hot water system comprising:
a water tank as described in the first aspect of the present application;
the circulating heating device is connected with the water circulating outlet and the water circulating inlet;
the flow direction control device is used for controlling the water heated by the circulating heating device to be output back to the water tank from the first water circulating sub-inlet and/or the second water circulating sub-inlet;
a heating medium processing device for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve; the first heating medium output end is communicated with the second heating medium input end through a second valve; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end.
Optionally, the flow direction control device is a three-way valve.
Optionally, the circulation heating device includes:
a second heat exchanger and a water pump;
the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end;
the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and inputting the water back to the water tank through the heat exchange output end and the water circulation inlet;
the heat pump hot water system further includes:
the human-computer interaction end is used for generating the expected temperature signal and the set mode signal according to the operation of a user;
the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank;
a third temperature sensor for measuring the temperature of the heat exchange output end;
and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor, the second temperature sensor and the third temperature sensor, the expected temperature signal and the set mode signal.
Optionally, the heating medium processing apparatus includes: the system comprises a compressor, a four-way valve and an outdoor heat exchanger;
the outdoor heat exchanger comprises an outdoor heat exchanger inlet and an outdoor heat exchanger outlet;
a first port (C) of the four-way valve is the output end of the first heating medium;
a second port (E) of the four-way valve is communicated with an outlet of the outdoor heat exchanger;
the inlet of the outdoor heat exchanger is the input end of the first heating medium;
and a third port (D) and a fourth port (S) of the four-way valve are communicated with the compressor.
The technical scheme provided by the application can comprise the following beneficial effects: on the one hand, set up first heat exchanger on the water tank inner bag, on the other hand, the water tank inner bag still is provided with hydrologic cycle entry and hydrologic cycle export, first heat exchanger is around on the water tank inner bag, so set up, when needs heating, can be in first heat exchanger heating water tank normal water, make circulation heating device with the water in the water tank follow hydrologic cycle export suction and heating back according to the demand, in the water tank is failed back to from the hydrologic cycle entry, so, alright in order to accelerate the speed to the water heating in the water tank, shorten heat time, satisfy the user fast to a large amount of hydrothermal demands.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a water tank according to a first embodiment of the present application.
Fig. 2 is a schematic structural diagram of a heat pump hot water system according to a second embodiment of the present application.
Fig. 3 is a schematic structural diagram of a heat pump hot water system according to a third embodiment of the present application.
Fig. 4 is a flowchart illustrating a control method for a heat pump hot water system according to a fourth embodiment of the present application.
Fig. 5 is a schematic structural diagram of a heat pump hot water system of a hanging tank according to a third embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
In order to meet the demand of people for hot water, heat pump hot water systems are increasingly widely used. At present, an existing heat pump hot water system is generally provided with a water tank for storing hot water, and water in the water tank is heated through a heating mechanism so as to obtain required hot water. In order to meet the greater demand of users for hot water, a large-volume water tank is often configured, and as the amount of water in the water tank increases, the time for the heating mechanism to heat the water in the large-volume water tank to a desired temperature is also prolonged, so that the heating waiting time becomes longer.
In order to solve the above technical problems, the present application provides a water tank, a heat pump hot water system and a control method thereof, which are described below by way of example.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a water tank according to an embodiment of the present application.
As shown in fig. 1, the water tank provided by the present embodiment may include:
a water tank inner container 1;
the first heat exchanger 2 is arranged on the water tank inner container; the first heat exchanger is wound on the inner container of the water tank and is used for heating water in the water tank;
the water tank inner container is provided with a water circulation outlet 3 and a water circulation inlet; the water circulation outlet and the water circulation inlet are used for being communicated with the circulation heating device, so that the water in the water tank is sucked out from the water circulation outlet by the circulation heating device, heated and then conveyed back to the water tank from the water circulation inlet.
On the one hand, set up first heat exchanger on the water tank inner bag, on the other hand, the water tank inner bag still is provided with hydrologic cycle entry and hydrologic cycle export, first heat exchanger is around on the water tank inner bag, so set up, when needs heating, can be in first heat exchanger heating water tank normal water, make circulation heating device with the water in the water tank follow hydrologic cycle export suction and heating back according to the demand, in the water tank is failed back to from the hydrologic cycle entry, so, alright in order to accelerate the speed to the water heating in the water tank, shorten heat time, satisfy the user fast to a large amount of hydrothermal demands.
The first heat exchanger can be an external coil heat exchanger, and can be a microchannel, a copper coil or an aluminum coil.
It should be noted that the first heat exchanger and the water circulation outlet are respectively disposed at two ends of the water tank, and taking the water tank in an installation completed state as an example, the first heat exchanger may be disposed at one end of the water tank far away from the ground, and correspondingly, the water circulation outlet is disposed at one end of the water tank near the ground. Because the higher water of temperature is compared in the density of the lower water of temperature little, therefore, the higher water of temperature can float on the lower water of temperature, so, in this embodiment can set up the one end of keeping away from ground at the water tank with first heat exchanger, when utilizing first heat exchanger heating, can heat the water on water tank upper portion relatively, keep away from the water of ground one end promptly, when having avoided the water of heating other positions of water tank to a certain extent, the water at this position rises because of the temperature, the density reduces, float on large-scale heat transfer between the water of in-process and the position of not heating, can produce usable hot water fast, on this basis, utilize circulation heating device to carry out the circulation heating to the water of the one end nearer apart from ground, thus, just can heat the water of water tank upper portion and water tank lower part simultaneously to a certain extent, it is faster to make hot water speed.
Still take the state that the water tank is in the completion of installation as an example, the upper portion of water tank is the one end that the water tank is far away from ground, and the lower portion of water tank is the one end that the water tank is close to ground. In order to recover the hot water as quickly as possible, the water circulation inlet of the water tank may include a first water circulation sub-inlet 41 and a second water circulation sub-inlet 42, the first water circulation sub-inlet being provided at the end of the water tank having the water circulation outlet; the second water circulation sub-inlet is arranged at one end of the water tank with the first heat exchanger; so that the water heated by the circulation heating device is returned to the water tank from the first water circulation sub-inlet and/or the second water circulation sub-inlet, for example, the water heated by the circulation heating device can be returned to the upper part of the water tank from the second water circulation sub-inlet, so as to meet the requirement of a user on rapidly heating water, and simultaneously reduce the mixing loss of cold water and hot water at the lower part of the water tank.
It should be noted that, for the control logic and related devices for controlling the water heated by the circulation heating device to flow into the water tank from the first water circulation sub-inlet and/or the second water circulation sub-inlet, reference may be made to the contents of the following third embodiment and fourth embodiment of the present application.
Example two
Referring to fig. 2, fig. 2 is a schematic structural diagram of a heat pump hot water system according to a second embodiment of the present application.
As shown in fig. 2, the heat pump hot water system provided by the present embodiment may include:
the water tank provided by the first embodiment of the application;
a circulation heating device 5 connected with the water circulation outlet and the water circulation inlet;
a heating medium processing device 6 for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve 7; the first heating medium output end is communicated with the second heating medium input end through a second valve 8; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end.
In addition, the heat pump water heating system provided by the present embodiment may further include: the man-machine interaction end is used for generating an expected temperature signal and a set mode signal according to the operation of a user; the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank; and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor and the second temperature sensor, an expected temperature signal and a set mode signal.
It should be noted that, the circulation heating device can be various, and the circulation heating device includes: a second heat exchanger 51 and a water pump 52; the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end; the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and the water is returned to the water tank through the heat exchange output end and the water circulation inlet.
Wherein, the second heat exchanger can be a double-pipe heat exchanger, a shell-and-tube heat exchanger or a plate heat exchanger.
In addition, the heating medium processing device may be a device component with a compressor as a core, for example, the heating medium processing device of the present embodiment may include a compressor 61, a four-way valve 62, and an outdoor heat exchanger 63; the outdoor heat exchanger comprises an outdoor heat exchanger inlet and an outdoor heat exchanger outlet; a first port C of the four-way valve is a first heating medium output end; a second port E of the four-way valve is communicated with an outlet of the outdoor heat exchanger; an inlet of the outdoor heat exchanger is a first heating medium input end; and a third port D and a fourth port S of the four-way valve are communicated with the compressor.
It should be noted that specific control logic in the system may refer to the fourth embodiment described below, and details are not described in this embodiment.
EXAMPLE III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a heat pump hot water system according to a third embodiment of the present application.
As shown in fig. 3, the heat pump hot water system provided by the present embodiment may include:
the water tank provided by the first embodiment of the application;
the circulating heating device is connected with the water circulating outlet and the water circulating inlet;
the flow direction control device 9 is used for controlling the water heated by the circulating heating device to be output to the water tank from the first water circulating sub-inlet and/or the second water circulating sub-inlet;
a heating medium processing device for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve; the first heating medium output end is communicated with the second heating medium input end through a second valve; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end. It should be noted that the circulation heating device may include: a second heat exchanger and a water pump; the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end; the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and the water is returned to the water tank through the heat exchange output end and the water circulation inlet.
In addition, the heat pump water heating system of the present embodiment may further include: the man-machine interaction end is used for generating an expected temperature signal and a set mode signal according to the operation of a user; the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank; the third temperature sensor is used for measuring the temperature of the heat exchange output end; and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor, the second temperature sensor and the third temperature sensor, an expected temperature signal and a set mode signal.
The flow direction control device may be a three-way valve or a plurality of common control valves, for example, two common control valves, which respectively control the flow of the first water circulation sub-inlet and the flow of the second water circulation sub-inlet. Taking the water tank in a state of being installed, the flow direction control device being a three-way valve, and the water circulation inlet including a first water circulation sub-inlet and a second water circulation sub-inlet as an example, the upper part of the water tank, i.e. the end of the water tank far away from the ground, and the lower part of the water tank, i.e. the end of the water tank near the ground, the first water circulation sub-inlet being arranged at the end of the water tank having the water circulation outlet, in this embodiment, the lower part of the water; the second water circulation sub-inlet is arranged at one end of the water tank, which is provided with the first heat exchanger, and can be the upper part of the water tank in the embodiment; and water heated by the circulating heating device is conveyed back to the water tank from the first water circulating sub-inlet and/or the second water circulating sub-inlet through the three-way valve. If the water heated by the circulating heating device is returned to the upper part of the water tank from the second water circulating sub-inlet, the requirement of a user for quickly making hot water is met, and the mixing loss of cold and hot water at the lower part of the water tank is reduced
Specifically, the control of the three-way valve can be controlled according to the temperature measured by the third temperature sensor, for example, when the temperature measured by the third temperature sensor is higher than a preset temperature value (in this embodiment, 42 ℃), the three-way valve can be controlled to operate, so that water heated by the circulation heating device enters the upper part of the water tank through the second water circulation sub-inlet, the requirement of a user for quickly making hot water is met, and the mixing loss of cold water and hot water at the lower part of the water tank is reduced. The temperature of the water can be controlled according to the temperature measured by the first temperature sensor (at this time, the first temperature sensor is arranged at one end of the upper part of the water tank described above) and the temperature measured by the third temperature sensor, for example, when the temperature measured by the third temperature sensor is greater than or equal to the temperature measured by the first temperature sensor, the three-way valve is controlled to operate, so that the water heated by the circulation heating device enters the upper part of the water tank through the second water circulation sub-inlet; when the temperature measured by the third temperature sensor is smaller than the difference value between the temperature measured by the first temperature sensor and another preset temperature value (in the embodiment, another preset temperature value can be 3 ℃), controlling the three-way valve to act, so that the water heated by the circulating heating device enters the lower part of the water tank through the first water circulation sub-inlet; otherwise, the state of the three-way valve at the time can be maintained.
In addition, for the specific control logic of the working states of the first valve, the second valve, the circulation heating device and the heating medium processing device, reference may be made to embodiment four of the present application, which is not described herein again.
The man-machine interaction end can be a device with any one or all of keys and a screen, a user can input expected temperature through the keys to correspondingly generate expected temperature signals, can input a setting mode through the keys to correspondingly generate setting mode signals, and the screen can display part or all of the temperatures related to the system and the setting mode of the system. Of course, when there is no key, the screen may be a touch screen, which may be displayed or may be used for user input.
In addition, the heating medium processing device may be a device component with a compressor as a core, for example, the heating medium processing device of the present embodiment may include a compressor, a four-way valve, and an outdoor heat exchanger; the outdoor heat exchanger comprises an outdoor heat exchanger inlet and an outdoor heat exchanger outlet; a first port C of the four-way valve is a first heating medium output end; a second port E of the four-way valve is communicated with an outlet of the outdoor heat exchanger; an inlet of the outdoor heat exchanger is a first heating medium input end; and a third port D and a fourth port S of the four-way valve are communicated with the compressor.
In addition, the water tank may have a vertical water tank and a hanging water tank, please refer to fig. 5, fig. 5 is a schematic structural diagram of a heat pump hot water system of a hanging water tank according to a third embodiment of the present application, and components and working principles contained therein may refer to other parts of the present application.
Example four
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a control method of a heat pump hot water system according to a fourth embodiment of the present application.
As shown in fig. 4, the method for controlling a heat pump hot water system according to the present embodiment is applied to a heat pump hot water system according to the second embodiment or the third embodiment of the present application, and may include:
and 41, acquiring a first temperature measured by the first temperature sensor, a second temperature measured by the second temperature sensor and an ambient temperature.
And 43, controlling the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the first temperature, the second temperature, the environment temperature, the expected temperature signal and the setting mode signal.
Specifically, the setting mode signal in step 43 may include a first mode signal, a second mode signal and a third mode signal, and in addition, the first temperature sensor is disposed at one end of the water tank having the first heat exchanger; the second temperature sensor is arranged at one end of the water tank with a water circulation outlet; the control logic of the heat pump water heating system is different depending on the setting mode signal, and the following description will be given of each setting mode signal (in this embodiment, the control of the operating state of the heating medium processing apparatus is mainly embodied in the frequency control of the compressor in the heating medium processing apparatus):
and when the set mode signal is the first mode signal, controlling the first valve to be opened and controlling the working frequency of the heating medium processing device according to the first temperature, the ambient temperature and the expected temperature signal. For example, when the first temperature is less than or equal to a user set temperature-X and the environmental temperature is less than or equal to Y, the compressor operates at a high frequency, wherein X can be, but is not limited to, 5 ℃, Y can be, but is not limited to, 25 ℃, and the high-frequency operation frequency of the compressor can be 80Hz or above; the expected temperature signal-X is less than the first temperature, or the environment temperature is more than Y, the variable frequency compressor operates at the intermediate frequency, and the intermediate frequency operation frequency can be 40-60 Hz.
And when the set mode signal is a first mode signal and the first temperature and expected temperature signal meet a first preset condition, controlling the first valve and the second valve to be opened, controlling the circulating heating device to start running and controlling the working frequency of the heating medium processing device according to the second temperature, the ambient temperature and the expected temperature signal. Wherein the first predetermined condition may be that the first temperature ≧ the desired temperature signal. The control of the compressor frequency can be, but is not limited to, performed according to the following specific examples: and when the second temperature is less than or equal to the expected temperature signal-M and the environmental temperature is less than or equal to N, the variable frequency compressor operates at a medium frequency, wherein M can be 7 ℃, and N can be 30 ℃. When the expected temperature signal-M is less than the second temperature and less than the expected temperature signal, or the environment temperature is more than N, the frequency conversion compressor operates at a low frequency, and the low-frequency operation frequency can be 20-38 Hz. Mid-frequency operation can be referred to the previous description.
And when the mode signal is set to be the first mode signal and the second temperature and the expected temperature signal meet a second preset condition, controlling the first valve and the second valve to be closed, and controlling the heating medium processing device and the circulating heating device to stop running. Wherein the second preset condition may be that the second temperature is greater than or equal to the desired temperature signal.
The first mode signal is a rapid heating mode, hot water can be rapidly supplied to a user, and when the water temperature at the upper part of the water tank is low, only the heat exchanger at the upper part (namely the first heat exchanger) is independently started for heating, so that the purpose of rapidly recovering the hot water at the upper part of the water tank for the user to use is achieved. And after the temperature of the upper part of the water tank is heated to the required temperature, the upper heat exchanger and the circulating heating heat exchanger are started to heat simultaneously, and the whole tank of water is rapidly heated.
And when the set mode signal is a second mode signal, controlling the first valve and the second valve to be opened and controlling the working frequency of the heating medium processing device according to the first temperature, the second temperature, the expected temperature signal and the ambient temperature. When the average value of the first temperature and the second temperature is less than the expected temperature signal-X and the environmental temperature is less than or equal to Y, the compressor operates at intermediate frequency; when the average value of the first temperature and the second temperature is larger than or equal to the expected temperature signal-X or the environment temperature is larger than Y, the compressor operates at low frequency. For the values of the mid-frequency operation, the low-frequency operation and X, Y, reference can be made to the foregoing description.
And when the mode signal is set to be the second mode signal and the first temperature and the expected temperature signal meet a third preset condition, controlling the first valve to be closed. The third predetermined condition may be that the first temperature ≧ the desired temperature signal.
And when the mode signal is set to be the second mode signal and the second temperature and the expected temperature signal meet the fourth preset condition, controlling the second valve to be closed, and simultaneously controlling the heating medium processing device and the circulating heating device to stop running. The fourth predetermined condition may be that the second temperature ≧ the desired temperature signal.
The second mode signal can be a standard heating mode, the first heat exchanger and the second heat exchanger in the circulating heating device are used for heating in a cooperative mode, the disturbance of water in the water tank is enhanced, the heat exchange efficiency of the first heat exchanger and the heat exchange efficiency of the second heat exchanger can be effectively improved, and meanwhile, the heating rate is considered.
When the set mode signal is a third mode signal, if the first temperature is lower than a first preset temperature, controlling the first valve to be opened and controlling the heating medium processing device to work at a preset frequency; and if the first temperature is greater than or equal to a first preset temperature, controlling the first valve to be closed, controlling the heating medium processing device to work at a preset frequency, controlling the second valve to be opened, and controlling the circulating heating device to start working. The first preset temperature may be, but is not limited to, 45 ℃.
And when the set mode signal is a third mode signal and the second temperature is greater than or equal to the temperature of the expected temperature signal, controlling the heating medium processing device and the circulating heating device to stop running and controlling the second valve to close.
The third mode signal can be an energy-saving heating mode, at the initial stage of water temperature heating, the first heat exchanger is used for heating, the heat exchange temperature difference between the first heat exchanger on the upper portion and the water tank is large, the heat exchange efficiency is high, along with the water temperature heating, hot water is gathered on the upper portion under the action of buoyancy, and therefore the circulating heating device is switched to at the moment to heat the water temperature on the lower portion of the water tank.
In order to increase the defrosting rate of the outdoor heat exchanger and avoid the problem that high-pressure protection is easily caused under the condition that the outdoor heat exchanger is frostless or frostless, based on the heat pump hot water system provided by the second embodiment and the third embodiment, the heat pump hot water system control method provided by the present embodiment further includes a defrosting logic, including: receiving a system defrosting signal; when the system defrosting signal is defrosting, if the second temperature is greater than or equal to a second preset temperature, controlling a second valve to be opened, controlling a four-way valve to be reversed, and controlling a circulating heating device to start to operate; and if the second temperature is lower than the second preset temperature, controlling the first valve and the second valve to be opened, controlling the four-way valve to be reversed, and controlling the circulating heating device to start to operate.
The second preset temperature may preferably be 10 ℃, and the four-way valve may refer to the flow direction of the heating medium and the flow direction of the defrosting medium in fig. 2 and 3.
In addition, for the heat pump hot water system with the flow direction control device, the control method of the embodiment may further include:
Specifically, taking the water tank in a state of being installed, the flow direction control device being a three-way valve, and the water circulation inlet including a first water circulation sub-inlet and a second water circulation sub-inlet as an example, the upper part of the water tank, i.e., the end of the water tank far away from the ground, the lower part of the water tank, i.e., the end of the water tank near the ground, the first water circulation sub-inlet being disposed at the end of the water tank having the water circulation outlet, which may be the lower part of the water tank in this; the second water circulation sub-inlet is arranged at one end of the water tank, which is provided with the first heat exchanger, and can be the upper part of the water tank in the embodiment; and water heated by the circulating heating device is conveyed back to the water tank from the first water circulating sub-inlet and/or the second water circulating sub-inlet through the three-way valve. If the water heated by the circulating heating device is returned to the upper part of the water tank from the second water circulating sub-inlet, the requirement of a user for quickly making hot water is met, and the mixing loss of cold and hot water at the lower part of the water tank is reduced
Specifically, the control of the three-way valve can be controlled according to the temperature measured by the third temperature sensor, for example, when the temperature measured by the third temperature sensor is higher than a preset temperature value (in this embodiment, 42 ℃), the three-way valve can be controlled to operate, so that water heated by the circulation heating device enters the upper part of the water tank through the second water circulation sub-inlet, the requirement of a user for quickly making hot water is met, and the mixing loss of cold water and hot water at the lower part of the water tank is reduced. The temperature of the water can be controlled according to the temperature measured by the first temperature sensor (at this time, the first temperature sensor is arranged at one end of the upper part of the water tank described above) and the temperature measured by the third temperature sensor, for example, when the temperature measured by the third temperature sensor is greater than or equal to the temperature measured by the first temperature sensor, the three-way valve is controlled to operate, so that the water heated by the circulation heating device enters the upper part of the water tank through the second water circulation sub-inlet; when the temperature measured by the third temperature sensor is smaller than the difference value between the temperature measured by the first temperature sensor and another preset temperature value (in the embodiment, another preset temperature value can be 3 ℃), controlling the three-way valve to act, so that the water heated by the circulating heating device enters the lower part of the water tank through the first water circulation sub-inlet; otherwise, the state of the three-way valve at the time can be maintained.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application, and by designing such modules or processes in a manner that is not necessary for the performance of the functions specified in the flowcharts or steps of the process.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. A water tank applied to a heat pump hot water system is characterized by comprising:
a water tank inner container;
the first heat exchanger is arranged on the water tank inner container; the first heat exchanger is wound on the water tank inner container and used for heating water in the water tank;
the water tank inner container is provided with a water circulation outlet and a water circulation inlet; the water circulation outlet and the water circulation inlet are used for being communicated with a circulation heating device, so that the water in the water tank is sucked out from the water circulation outlet and heated by the circulation heating device, and then is conveyed back to the water tank from the water circulation inlet.
2. The water tank as claimed in claim 1, wherein the first heat exchanger and the water circulation outlet are respectively provided at both ends of the water tank.
3. The water tank as claimed in claim 2, wherein the first heat exchanger is disposed at an end of the water tank away from the ground when the water tank is in an installation-completed state.
4. The water tank of claim 2 wherein the water circulation inlet comprises a first water circulation sub-inlet and a second water circulation sub-inlet;
the first water circulation sub-inlet is arranged at one end of the water tank with the water circulation outlet; the second water circulation sub-inlet is arranged at one end of the water tank, which is provided with the first heat exchanger; so that the water heated by the circulation heating device is input back to the water tank from the first water circulation sub-inlet and/or the second water circulation sub-inlet.
5. A heat pump water heating system, comprising:
a water tank as claimed in any one of claims 1 to 3;
the circulating heating device is connected with the water circulating outlet and the water circulating inlet;
a heating medium processing device for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve; the first heating medium output end is communicated with the second heating medium input end through a second valve; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end.
6. The heat pump hot water system as claimed in claim 5, further comprising:
the man-machine interaction end is used for generating an expected temperature signal and a set mode signal according to the operation of a user;
the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank;
and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor and the second temperature sensor, the expected temperature signal and the set mode signal.
7. The heat pump hot water system as claimed in claim 6, wherein the circulation heating means comprises:
a second heat exchanger and a water pump;
the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end;
the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and inputting the water back to the water tank through the heat exchange output end and the water circulation inlet.
8. A heat pump water heating system, comprising:
the water tank of claim 4;
the circulating heating device is connected with the water circulating outlet and the water circulating inlet;
the flow direction control device is used for controlling the water heated by the circulating heating device to be output back to the water tank from the first water circulating sub-inlet and/or the second water circulating sub-inlet;
a heating medium processing device for raising the temperature of the heating medium;
the heating medium processing device comprises a first heating medium output end and a first heating medium input end; the circulating heating device comprises a second heating medium input end and a second heating medium output end; the first heat exchanger comprises a third heating medium input end and a third heating medium output end;
the first heating medium output end is communicated with the third heating medium input end through a first valve; the first heating medium output end is communicated with the second heating medium input end through a second valve; the second heating medium output end and the third heating medium output end are both communicated with the first heating medium input end.
9. The heat pump hot water system as claimed in claim 8, wherein the flow direction control means is a three-way valve.
10. The heat pump hot water system as claimed in claim 9, wherein the circulation heating means comprises:
a second heat exchanger and a water pump;
the second heat exchanger comprises a second heating medium input end, a second heating medium output end, a heat exchange input end and a heat exchange output end;
the water pump is used for inputting water in the water tank into the second heat exchanger through the water circulation outlet and the heat exchange input end for heating, and inputting the water back to the water tank through the heat exchange output end and the water circulation inlet;
the heat pump hot water system further includes:
the man-machine interaction end is used for generating an expected temperature signal and a set mode signal according to the operation of a user;
the first temperature sensor and the second temperature sensor are used for measuring the water temperatures at two ends of the water tank;
a third temperature sensor for measuring the temperature of the heat exchange output end;
and the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the circulating heating device and the heating medium processing device, so that the controller controls the working states of the first valve, the second valve, the circulating heating device and the heating medium processing device according to the temperatures measured by the first temperature sensor, the second temperature sensor and the third temperature sensor, the expected temperature signal and the set mode signal.
11. The heat pump water heating system according to any one of claims 5 to 10, wherein the heating medium treatment device includes: the system comprises a compressor, a four-way valve and an outdoor heat exchanger;
the outdoor heat exchanger comprises an outdoor heat exchanger inlet and an outdoor heat exchanger outlet;
a first port (C) of the four-way valve is the output end of the first heating medium;
a second port (E) of the four-way valve is communicated with an outlet of the outdoor heat exchanger;
the inlet of the outdoor heat exchanger is the input end of the first heating medium;
and a third port (D) and a fourth port (S) of the four-way valve are communicated with the compressor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888580.7U CN211552039U (en) | 2019-11-04 | 2019-11-04 | Water tank and heat pump hot water system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921888580.7U CN211552039U (en) | 2019-11-04 | 2019-11-04 | Water tank and heat pump hot water system |
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| CN211552039U true CN211552039U (en) | 2020-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836534A (en) * | 2019-11-04 | 2020-02-25 | 珠海格力电器股份有限公司 | Water tank, heat pump hot water system and control method thereof |
| CN115119519A (en) * | 2021-01-25 | 2022-09-27 | 广东芬尼克兹节能设备有限公司 | Water temperature control method, device and equipment of swimming pool heat pump system and storage medium |
-
2019
- 2019-11-04 CN CN201921888580.7U patent/CN211552039U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836534A (en) * | 2019-11-04 | 2020-02-25 | 珠海格力电器股份有限公司 | Water tank, heat pump hot water system and control method thereof |
| CN110836534B (en) * | 2019-11-04 | 2023-11-24 | 珠海格力电器股份有限公司 | Water tank, heat pump water heating system and control method thereof |
| CN115119519A (en) * | 2021-01-25 | 2022-09-27 | 广东芬尼克兹节能设备有限公司 | Water temperature control method, device and equipment of swimming pool heat pump system and storage medium |
| CN115119519B (en) * | 2021-01-25 | 2024-01-02 | 广东芬尼克兹节能设备有限公司 | Water temperature control method, device, equipment and storage medium of swimming pool heat pump system |
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