CN213514443U - Water tank assembly and heat supply system - Google Patents
Water tank assembly and heat supply system Download PDFInfo
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- CN213514443U CN213514443U CN202022246163.1U CN202022246163U CN213514443U CN 213514443 U CN213514443 U CN 213514443U CN 202022246163 U CN202022246163 U CN 202022246163U CN 213514443 U CN213514443 U CN 213514443U
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Abstract
The utility model provides a water tank set spare, heating system. The water tank component comprises a heat storage water tank and a direct heating part, the heat storage water tank is arranged outside the heat storage water tank, the direct heating part is provided with a second water inlet and a second water outlet, the second water inlet is communicated with the first water outlet, a second heat exchange mechanism is arranged in the direct heating part, and the second heat exchange mechanism is communicated with the refrigerant heat exchange circulation. The utility model provides a water tank set spare, heating system, reduce heat storage water tank's volume, and the outside at heat storage water tank additionally sets up the straight portion of heating and guarantees the leaving water temperature, thereby adapt to more installation places, and carry out the second grade heating in sending the water in the heat storage water tank to the straight portion of heating in addition, increase heating system's play water speed, avoid the long-time waiting of user, simultaneously through the than automatic control heating system's of temperature working mode, realize heating system's intelligent regulation.
Description
Technical Field
The utility model relates to a preparation hot water system technical field, especially a water tank set spare, heating system.
Background
The air energy heat pump water heater is safe and energy-saving, convenient and comfortable to use, and is used by more and more users, the air energy water heater is provided with a heat storage water tank, the water tank container is large, the occupied area is large, and a lot of users generally do not reserve water tank installation positions or cold and hot water pipe connectors to cause the problem of incapability of installation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that a heat storage water tank of an air energy heat pump water heater in the prior art is too large in size and cannot be installed, a water tank assembly and a heat supply system are provided, wherein a direct heating part is added outside the heat storage water tank to reduce the occupied space of the heat storage water tank under the condition of ensuring the water outlet temperature.
A water tank assembly having an inlet and an outlet, comprising:
the heat storage water tank is provided with a first water inlet and a first water outlet, a first heat exchange mechanism is arranged in the heat storage water tank, and the first heat exchange mechanism is in heat exchange circulation communication with a refrigerant;
the direct heat part is arranged outside the heat storage water tank and provided with a second water inlet and a second water outlet, the second water inlet is communicated with the first water outlet, a second heat exchange mechanism is arranged in the direct heat part and is communicated with the refrigerant heat exchange circulation;
the first water inlet constitutes the water inlet and the second water outlet constitutes the water outlet.
The second heat exchange mechanism comprises an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, the inner pipe is provided with a second water inlet and a second water outlet, and the outer pipe is in heat exchange circulation communication with the refrigerant; or the outer pipe is provided with the second water inlet and the second water outlet, and the inner pipe is communicated with the refrigerant in a heat exchange cycle manner.
And a flow regulating mechanism is arranged between the second water inlet and the first water outlet.
The first heat exchange mechanism is provided with a first refrigerant inlet, the second heat exchange mechanism is provided with a second refrigerant inlet, the first refrigerant inlet is communicated with the refrigerant heat exchange circulation through a first on-off mechanism, and the second refrigerant inlet is communicated with the refrigerant heat exchange circulation through a second on-off mechanism.
The first heat exchange mechanism is provided with a first refrigerant inlet, the second heat exchange mechanism is provided with a second refrigerant outlet, and the second refrigerant outlet is communicated with a pipeline between the first refrigerant inlet and the first on-off mechanism.
The second heat exchange mechanism is provided with a second refrigerant outlet, and a one-way valve is arranged at the second refrigerant outlet.
A heating system comprises the water tank assembly.
The heat supply system further comprises a compressor, an evaporator and a four-way valve, wherein an exhaust port of the compressor is communicated with a D communication port of the four-way valve, an air suction port of the compressor is communicated with an S communication port of the four-way valve, a first refrigerant inlet of the first heat exchange mechanism and a second refrigerant inlet of the second heat exchange mechanism are both communicated with a C communication port of the four-way valve, a first inlet and a first outlet of the evaporator are communicated with an E communication port of the four-way valve, and a first refrigerant outlet of the first heat exchange mechanism and a second refrigerant outlet of the second heat exchange mechanism are both communicated with a second inlet and a second outlet of the evaporator through a throttling mechanism; or a second refrigerant outlet of the second heat exchange mechanism is communicated with the first refrigerant inlet, and a first refrigerant outlet of the first heat exchange mechanism is communicated with a second inlet and a second outlet of the evaporator through a throttling mechanism.
The control method of the heating system includes that the first heat exchange mechanism is provided with a first refrigerant inlet, the second heat exchange mechanism is provided with a second refrigerant inlet, the first refrigerant inlet is in heat exchange circulation communication with the refrigerant through a first on-off mechanism, and the second refrigerant inlet is in heat exchange circulation communication with the refrigerant through a second on-off mechanism, and the control method includes:
in the defrosting mode, the first on-off mechanism is in an open state, the second on-off mechanism is in a closed state, and a communication port D of the four-way valve is communicated with a communication port E.
The control method further comprises the following steps:
in the heat storage and heating mode, the first on-off mechanism is in an open state, the second on-off mechanism is in a closed state, and a communication port D of the four-way valve is communicated with a communication port C;
in the direct heating mode, the first on-off mechanism is in a closed state, the second on-off mechanism is in an open state, and a communication port D of the four-way valve is communicated with a communication port C.
The control method further comprises the following steps:
detecting whether water flow exists at the water outlet;
if so, switching the heating system to a direct heating mode;
if not, the heating system is switched to the heat storage and heating mode.
After the heating system is switched to the direct heating mode, the method further comprises the following steps:
acquiring a set temperature T0 and a water temperature T1 in the hot water storage tank, and comparing T0 with T1;
if T1 is less than T0-a, the first on-off mechanism is switched to an on state, and the second on-off mechanism is switched to an off state;
if T1 is more than or equal to T0-a, keeping the working state of the first on-off mechanism and the working state of the second on-off mechanism unchanged;
a is a calculation constant.
After the heating system is switched to the heat storage and heating mode, the method further comprises the following steps:
acquiring a set temperature T0 and water temperature T2 of a water outlet, and comparing T0 with T2;
if T2 is less than T0-b, the first on-off mechanism is switched to a closed state, and the second on-off mechanism is switched to an off-on state;
if T1 is more than or equal to T0-b, keeping the working state of the first on-off mechanism and the working state of the second on-off mechanism unchanged;
b is a calculation constant.
The utility model provides a water tank set spare, heating system, reduce heat storage water tank's volume, and the outside at heat storage water tank additionally sets up the straight portion of heating and guarantees the leaving water temperature, thereby adapt to more installation places, and carry out the second grade heating in sending the water in the heat storage water tank to the straight portion of heating in addition, increase heating system's play water speed, avoid the long-time waiting of user, simultaneously through the than automatic control heating system's of temperature working mode, realize heating system's intelligent regulation.
Drawings
Fig. 1 is a schematic structural diagram of a water tank assembly according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a water tank assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a heating system according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a heating system according to an embodiment of the present invention;
in the figure:
1. a heat storage water tank; 11. a first water inlet; 12. a first water outlet; 2. a first heat exchange mechanism; 31. a second water inlet; 32. a second water outlet; 4. a second heat exchange mechanism; 7. a flow rate adjusting mechanism; 21. a first refrigerant inlet; 41. a second refrigerant inlet; 81. a first on-off mechanism; 82. a second on-off mechanism; 42. a second refrigerant outlet; 22. a first refrigerant outlet; 100. a compressor; 101. an evaporator; 102. a four-way valve; 103. and a throttling mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
A water tank assembly as shown in fig. 1 to 4, having a water inlet and a water outlet, comprising: the heat storage water tank 1 is provided with a first water inlet 11 and a first water outlet 12, a first heat exchange mechanism 2 is arranged in the heat storage water tank 1, the first heat exchange mechanism 2 is in heat exchange circulation communication with a refrigerant, cold water is introduced into the heat storage water tank 1 through the first water inlet 11, and the cold water exchanges heat with the first heat exchange mechanism 2 in the heat storage water tank 1 to prepare hot water and is stored in the heat storage water tank 1; the direct heating part is arranged outside the heat storage water tank 1 and provided with a second water inlet 31 and a second water outlet 32, the second water inlet 31 is communicated with the first water outlet 12, a second heat exchange mechanism 4 is arranged in the direct heating part, the second heat exchange mechanism 4 is circularly communicated with the refrigerant heat exchange, the first water inlet 11 forms the water inlet, the second water outlet 32 forms the water outlet, the water which completes one heat exchange in the heat storage water tank 1 flows into the direct heating part again to exchange heat with the second heat exchange mechanism 4, and finally is discharged from the second water outlet 32, so that the temperature set by a user is reached.
The first water inlet 11 is a cold water inlet located at the lower part of the heat storage water tank 1, and the first water outlet 12 is a warm water outlet located at the upper part of the heat storage water tank.
The second heat exchange mechanism 4 comprises an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, the inner pipe is provided with a second water inlet 31 and a second water outlet 32, and the outer pipe is in heat exchange circulation communication with the refrigerant; or, the outer pipe is provided with the second water inlet 31 and the second water outlet 32, the inner pipe is in heat exchange circulation communication with the refrigerant, that is, the second heat exchange mechanism 4 is a double pipe heat exchanger, and water and the refrigerant flow in two flow channels of the double pipe heat exchanger respectively and perform heat exchange.
A flow regulating mechanism 7 is arranged between the second water inlet 31 and the first water inlet 11, the amount of water entering the direct heating part is controlled by the flow regulating mechanism 7, and under the condition that the heat exchange amount of the second heat exchange mechanism 4 is constant, the temperature of water at the final second water outlet 32 is controlled according to the amount of water entering the second heat exchange mechanism 4.
The first heat exchange mechanism 2 is provided with a first refrigerant inlet 21, the second heat exchange mechanism 4 is provided with a second refrigerant inlet 41, the first refrigerant inlet 21 is communicated with the refrigerant heat exchange cycle through a first on-off mechanism 81, the second refrigerant inlet 41 is communicated with the refrigerant heat exchange cycle through a second on-off mechanism 82, whether the refrigerant in the refrigerant heat exchange cycle enters the first heat exchange mechanism 2 or not is controlled through the first on-off mechanism 81, whether the refrigerant in the refrigerant heat exchange cycle enters the second heat exchange mechanism 4 or not is controlled through the second on-off mechanism 82, and the working mode of the water tank assembly is controlled according to the control of the first on-off mechanism 81 and the second on-off mechanism 82, so that the purpose of keeping the water temperature in the water tank 1 and the purpose of rapidly providing hot water are achieved.
The first heat exchange mechanism 2 is provided with a first refrigerant inlet 21, the second heat exchange mechanism 4 is provided with a second refrigerant outlet 42, the second refrigerant outlet 42 is communicated with a pipeline between the first refrigerant inlet 21 and the first on-off mechanism 81, namely, the refrigerant which completes heat exchange in the second heat exchange mechanism 4 can flow into the first heat exchange mechanism 2 through the first refrigerant inlet 21 to exchange heat with water in the heat storage water tank 1, so that secondary heat exchange of the refrigerant is realized.
The second heat exchange mechanism 4 is provided with a second refrigerant outlet 42, and the one-way valve 9 is arranged at the second refrigerant outlet 42, so that the problem that the refrigerant enters the second heat exchange mechanism 4 from the second refrigerant outlet 42 is avoided while the refrigerant entering the second heat exchange mechanism 4 can smoothly flow out of the second heat exchange mechanism 4 after being heated inside the second heat exchange mechanism 4.
A heating system comprises the water tank assembly.
The heating system further comprises a compressor 100, an evaporator 101 and a four-way valve 102, wherein an exhaust port of the compressor 100 is communicated with a communication port D of the four-way valve 102, a suction port of the compressor 100 is communicated with a communication port S of the four-way valve 102, a first refrigerant inlet 21 of the first heat exchange mechanism 2 and a second refrigerant inlet 41 of the second heat exchange mechanism 4 are both communicated with a communication port C of the four-way valve 102, a first inlet and a first outlet of the evaporator 101 are communicated with a communication port E of the four-way valve 102, a first refrigerant outlet 22 of the first heat exchange mechanism 2 and a second refrigerant outlet 42 of the second heat exchange mechanism 4 are both communicated with a second inlet and a second outlet of the evaporator 101 through a throttling mechanism 103, namely the first heat exchange mechanism 2 and the second heat exchange mechanism 4 are connected in parallel between the communication port C and the throttling mechanism 103, and the refrigerant discharged from the compressor 100 can respectively enter the first heat exchange mechanism 2 and the second heat exchange mechanism 4 for heat exchange, the purposes of heating the water in the heat storage water tank 1 and supplying hot water to the direct heating part are achieved; or, the second refrigerant outlet 42 of the second heat exchange mechanism 4 is communicated with the first refrigerant inlet 21, the first refrigerant outlet 22 of the first heat exchange mechanism 2 is communicated with the second inlet and outlet of the evaporator 101 through the throttling mechanism 103, and the refrigerant in the refrigerant heat exchange cycle can firstly perform first heat exchange inside the second heat exchange mechanism 4, then flow into the first heat exchange mechanism 2 to perform second heat exchange, and then flow back into the evaporator 101 (refrigerant heat exchange cycle) through the throttling mechanism 103, so that the purposes of heating the water inside the heat storage water tank 1 and supplying hot water to the straight heat part are achieved.
In a control method of the heating system, the first heat exchange mechanism 2 has a first refrigerant inlet 21, the second heat exchange mechanism 4 has a second refrigerant inlet 41, the first refrigerant inlet 21 is in communication with the refrigerant heat exchange cycle through a first on-off mechanism 81, and the second refrigerant inlet 41 is in communication with the refrigerant heat exchange cycle through a second on-off mechanism 82, where the control method includes:
in the defrosting mode, the first on-off mechanism 81 is in an open state, the second on-off mechanism 82 is in a closed state, the communication port D of the four-way valve 102 is communicated with the communication port E, at this time, the refrigerant discharged by the compressor 100 enters the evaporator 101 through the communication port D and the communication port E of the four-way valve 102 to be defrosted, then flows into the heat storage water tank 1 through the throttling mechanism 103 to absorb heat, flows back to the communication port C and the communication port S of the four-way valve 102 through the first on-off mechanism 81, and finally flows back to the inside of the compressor 100 to complete refrigerant circulation, wherein the check valve 9 is arranged at the second refrigerant outlet 42 of the second heat exchange mechanism 4, so that the refrigerant flowing out of the throttling mechanism 103 can be prevented from entering the inside of the second heat exchange mechanism 4 to absorb.
As shown in fig. 3 and 4, the control method further includes:
in the heat storage and heating mode, the first on-off mechanism 81 is in an open state, the second on-off mechanism 82 is in a closed state, the communication port D of the four-way valve 102 is communicated with the communication port C, at this time, the refrigerant discharged by the compressor 100 enters the first heat exchange mechanism 2 through the communication port D and the communication port C of the four-way valve 102 to exchange heat with the heat in the heat storage water tank 1, then flows to the throttling mechanism 103 through the first refrigerant outlet of the first heat exchange mechanism 2, flows back to the communication port E and the communication port S of the four-way valve 102 through the evaporator 101, and finally flows to the inside of the compressor 100 to complete refrigerant circulation, the cold water enters the inside of the heat storage water tank 1 through the first water inlet 11, is heated by the refrigerant inside of the first heat exchange mechanism 2, is finally stored in the heat storage water tank 1, or flows out from the second water outlet 32 or from the first water outlet 12 to flow through the second heat exchange mechanism after being reheated by the first water outlet 12 4 (no heat exchange) and then flows out from the second water outlet 32;
in the direct heating mode, the first on-off mechanism 81 is in a closed state, the second on-off mechanism 82 is in an open state, the communication port D of the four-way valve 102 is communicated with the communication port C, at this time, the refrigerant discharged from the compressor 100 directly enters the second heat exchange mechanism 4 through the communication port D and the communication port C of the four-way valve 102 to heat the water inside the second heat exchange mechanism 4, because the water with a certain temperature is introduced from the inside of the heat storage water tank 1 inside the second heat exchange mechanism 4, the temperature at the second water outlet 32 can quickly reach the temperature set by the user, meanwhile, the refrigerant entering the second heat exchange mechanism 4 can directly flow to the throttling mechanism 103 through the second refrigerant outlet 42 and flow back to the inside of the compressor 100 through the evaporator 101 and the four-way valve 102 to complete refrigerant circulation, or enter the inside of the first heat exchange mechanism 2 through the first refrigerant inlet 21 to heat the water inside the heat storage water tank 1, then flows to a throttling mechanism 103 through a first refrigerant outlet and returns to the interior of the compressor 100 through an evaporator 101 and a four-way valve 102 to complete refrigerant circulation.
In fig. 3 and 4, solid arrows indicate the flow direction of the refrigerant in the heat storage and supply mode and the heat supply mode, and single-line arrows indicate the flow direction of the refrigerant in the defrosting mode.
The control method further comprises the following steps:
detecting whether water flow exists at the water outlet;
if the user needs hot water with a certain temperature, the heating system is switched to a direct heating mode, and the hot water consumption of the user is preferably supplied;
if not, the user does not need hot water at this time, the heating system is switched to the heat storage heating mode, the water temperature in the heat storage water tank 1 is kept at the preset temperature, the user can be ensured to directly provide or reduce the heat absorption quantity required in the second heat exchange mechanism 4 when needing hot water, the second heat exchange mechanism 4 can heat more water in the heat storage water tank 1 to the temperature required by the user under the condition of the same heat exchange quantity, and the speed of providing hot water is increased.
After the heating system is switched to the direct heating mode, the method further comprises the following steps:
acquiring a set temperature T0 and a water temperature T1 in the hot water storage tank 1, and comparing T0 with T1, wherein the set temperature T0 is set by a user;
if T1 is less than T0-a, it is indicated that if the user needs to use hot water at this time, the water temperature in the hot water storage tank 1 cannot meet the requirement of the user, the first on-off mechanism 81 is switched to an on state, and the second on-off mechanism 82 is switched to an off state to heat the water in the hot water storage tank 1, so that the water in the hot water storage tank 1 can meet the requirement of the user when the user uses the hot water at any time;
if T1 is not less than T0-a, it is indicated that if the user needs to use hot water at this time, the temperature of the water in the hot water storage tank 1 can reach the requirement of the user without heating, and the working state of the first on-off mechanism 81 and the working state of the second on-off mechanism 82 are kept unchanged;
a is a calculation constant, and the value range of a is 1-10 ℃, and preferably 5 ℃.
After the heating system is switched to the heat storage and heating mode, the method further comprises the following steps:
acquiring a set temperature T0 and water temperature T2 of a water outlet, and comparing T0 with T2;
if T2 is less than T0-b, the water temperature of the outlet water of the heating system does not meet the requirement of a user at the moment, the first on-off mechanism 81 is switched to a closed state, the second on-off mechanism 82 is switched to an on-off state, and the water in the second heat exchange mechanism 4 is heated by the refrigerant, so that the water temperature of the outlet water is close to the set water temperature T0 of the user and is finally basically equal to the set temperature T0 of the user;
if T1 is not less than T0-b, it is indicated that the temperature of the outlet water of the heating system can reach the set temperature of the user at this time or the temperature of the water in the hot water storage tank 1 can reach the set temperature of the user without being heated in the second heat exchange mechanism 4, and the working state of the first on-off mechanism 81 and the working state of the second on-off mechanism 82 are kept unchanged;
b is a calculation constant, and the value range of b is 1-10 ℃, and preferably 5 ℃.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A water tank assembly having a water inlet and a water outlet, characterized by: the method comprises the following steps:
the heat storage water tank (1) is provided with a first water inlet (11) and a first water outlet (12), a first heat exchange mechanism (2) is arranged in the heat storage water tank (1), and the first heat exchange mechanism (2) is communicated with a refrigerant heat exchange cycle;
the direct heating part is provided with a second water inlet (31) and a second water outlet (32), the second water inlet (31) is communicated with the first water outlet (12), a second heat exchange mechanism (4) is arranged in the direct heating part, and the second heat exchange mechanism (4) is in heat exchange circulation communication with the refrigerant;
the first water inlet (11) constitutes the water inlet and the second water outlet (32) constitutes the water outlet.
2. The water tank assembly of claim 1, wherein: the second heat exchange mechanism (4) comprises an outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, the inner pipe is provided with a second water inlet (31) and a second water outlet (32), and the outer pipe is in heat exchange circulation communication with the refrigerant; or the outer pipe is provided with the second water inlet (31) and the second water outlet (32), and the inner pipe is in heat exchange circulation communication with the refrigerant.
3. The water tank assembly of claim 1, wherein: a flow regulating mechanism (7) is arranged between the second water inlet (31) and the first water outlet (12).
4. The water tank assembly of claim 1, wherein: the first heat exchange mechanism (2) is provided with a first refrigerant inlet (21), the second heat exchange mechanism (4) is provided with a second refrigerant inlet (41), the first refrigerant inlet (21) is communicated with the refrigerant heat exchange circulation through a first on-off mechanism (81), and the second refrigerant inlet (41) is communicated with the refrigerant heat exchange circulation through a second on-off mechanism (82).
5. The water tank assembly of claim 4, wherein: the first heat exchange mechanism (2) is provided with a first refrigerant inlet (21), the second heat exchange mechanism (4) is provided with a second refrigerant outlet (42), and the second refrigerant outlet (42) is communicated with a pipeline between the first refrigerant inlet (21) and the first on-off mechanism (81).
6. The water tank assembly of claim 1, wherein: the second heat exchange mechanism (4) is provided with a second refrigerant outlet (42), and a one-way valve (9) is arranged at the second refrigerant outlet (42).
7. A heating system, characterized in that: comprising a cistern assembly as claimed in any one of claims 1 to 6.
8. A heating system according to claim 7, wherein: the heating system further comprises a compressor (100), an evaporator (101) and a four-way valve (102), wherein an exhaust port of the compressor (100) is communicated with a D communication port of the four-way valve (102), a suction port of the compressor (100) is communicated with an S communication port of the four-way valve (102), a first refrigerant inlet (21) of the first heat exchange mechanism (2) and a second refrigerant inlet (41) of the second heat exchange mechanism (4) are both communicated with the C communication port of the four-way valve (102), a first inlet and a first outlet of the evaporator (101) are communicated with the E communication port of the four-way valve (102), and a first refrigerant outlet of the first heat exchange mechanism (2) and a second refrigerant outlet (42) of the second heat exchange mechanism (4) are both communicated with a second inlet and a second outlet of the evaporator (101) through a throttling mechanism (103); or a second refrigerant outlet (42) of the second heat exchange mechanism (4) is communicated with the first refrigerant inlet (21), and a first refrigerant outlet of the first heat exchange mechanism (2) is communicated with a second inlet and a second outlet of the evaporator (101) through a throttling mechanism (103).
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| CN202022246163.1U CN213514443U (en) | 2020-10-09 | 2020-10-09 | Water tank assembly and heat supply system |
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| CN202022246163.1U CN213514443U (en) | 2020-10-09 | 2020-10-09 | Water tank assembly and heat supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112197432A (en) * | 2020-10-09 | 2021-01-08 | 珠海格力电器股份有限公司 | Water tank assembly, heat supply system and control method of heat supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112197432A (en) * | 2020-10-09 | 2021-01-08 | 珠海格力电器股份有限公司 | Water tank assembly, heat supply system and control method of heat supply system |
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