CN212320082U - High-efficiency heat pump water heater - Google Patents
High-efficiency heat pump water heater Download PDFInfo
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- CN212320082U CN212320082U CN202021258514.4U CN202021258514U CN212320082U CN 212320082 U CN212320082 U CN 212320082U CN 202021258514 U CN202021258514 U CN 202021258514U CN 212320082 U CN212320082 U CN 212320082U
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Abstract
The utility model provides a high-efficient heat pump water heater belongs to heat pump system technical field. The problem that in the prior art, when water in a water tank is supplemented at a high temperature, the heat absorption rate of a refrigerant is poor is solved. This high-efficient heat pump water heater includes compressor, water side heat exchanger, flow controller, wind side heat exchanger by the refrigerant house steward connection, its characterized in that: and a cooler for performing secondary heat release on the refrigerant subjected to heat release by the water side heat exchanger in the heating mode is arranged on the part, between the water side heat exchanger and the throttler, of the refrigerant header pipe. The high-efficiency heat pump water heater has the advantages that: the problem of heat pump water heater high temperature moisturizing process energy loss is solved, retrieve refrigerant heat through low temperature moisturizing water, reduced the throttle loss, increase unit heating capacity and efficiency.
Description
Technical Field
The utility model belongs to the technical field of heat pump system, especially, relate to a high-efficient heat pump water heater.
Background
In the current commercial hot water field, a heat pump water heater is widely accepted due to energy conservation and environmental protection, replaces a boiler to produce hot water, is listed in a government purchase list, and is widely applied to places such as schools, factories, troops and hospitals, however, most of the heat pump water heaters adopt circulating heating, generally work in a high temperature region with the water temperature higher than 42 ℃, the temperature of a refrigerant outlet condenser is higher, the refrigerant is high in temperature and pressure, the throttling loss is larger, and the unit energy efficiency ratio is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solve at least partly high-efficient heat pump water heater in the above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a high-efficient heat pump water heater, include the compressor, water side heat exchanger, flow controller, the wind side heat exchanger that are connected by the refrigerant house steward, its characterized in that: and a cooler for performing secondary heat release on the refrigerant subjected to heat release by the water side heat exchanger in the heating mode is arranged on the part, between the water side heat exchanger and the throttler, of the refrigerant header pipe.
In the efficient heat pump water heater, an avoiding assembly which enables the refrigerant coming out of the restrictor to avoid the cooler to directly enter the water side heat exchanger in the defrosting mode is further arranged between the water side heat exchanger and the restrictor.
In the above-mentioned high-efficiency heat pump water heater, the evasion assembly includes a coolant bypass pipe arranged in parallel with a section of the coolant main pipe on which the cooler is arranged, and two ends of the coolant bypass pipe are respectively communicated with the coolant main pipe in a one-to-one sealing manner, and a first flow blocking member for preventing the coolant from flowing into the cooler from the restrictor is arranged between the communicating positions of the coolant bypass pipe on the coolant main pipe, the communicating positions being adjacent to the coolant outlet end of the cooler in the heating mode.
In the above high-efficiency heat pump water heater, the first flow blocking element is any one or more of a check valve and an electromagnetic valve.
In the above high-efficiency heat pump water heater, the avoidance assembly further includes a second flow choking element, which is arranged on the refrigerant bypass pipe and used for preventing the refrigerant coming out of the water side heat exchanger in the heating mode from directly flowing into the restrictor without passing through the cooler.
In the above high-efficiency heat pump water heater, the second flow blocking element is any one or more of a check valve and an electromagnetic valve.
Compared with the prior art, this high-efficient heat pump water heater's advantage lies in: the cooler is additionally arranged on the refrigerant main pipe between the water side heat exchanger and the throttler serving as the condenser, so that the heat of the refrigerant with higher temperature is further recovered by the aid of the cooler in low-temperature water replenishing, the temperature of the refrigerant is further reduced, heat absorption efficiency of the refrigerant is improved, throttling loss is reduced, and unit heating capacity and energy efficiency are increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 provides a working principle diagram in one embodiment of the present invention.
Fig. 2 provides a schematic diagram of the operation of the embodiment of fig. 1 in a heating mode.
FIG. 3 provides a schematic diagram of the embodiment of FIG. 1 in a defrost mode.
In the figure, a refrigerant header 101, a compressor 102, a water-side heat exchanger 103, a throttle valve 104, an air-side heat exchanger 105, a cooler 106, a refrigerant bypass pipe 107, a first check valve 108, a second check valve 109, and a four-way valve 110 are illustrated.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
As shown in fig. 1, the high-efficiency heat pump water heater includes a compressor 102, a water-side heat exchanger 103, a throttle valve 104, and an air-side heat exchanger 105 connected by a refrigerant header pipe 101, and a cooler 106 for secondarily releasing heat of a refrigerant having passed through the water-side heat exchanger 103 in a heating mode is provided on a portion of the refrigerant header pipe 101 located between the water-side heat exchanger 103 and the throttle.
It should be noted that the throttling device here is generally a throttling valve as shown in fig. 1 to 3, but may be a throttling pipe, and the two may be used individually or in combination, and the number may be one, or may be plural as needed.
The heating working principle is as follows: as shown in fig. 2, in the heating mode, the high-temperature and high-pressure exhaust gas of the compressor 102 firstly enters the water-side heat exchanger 103 as a condenser through the four-way valve 110 to release heat, the high-pressure and high-temperature liquid refrigerant after releasing heat enters the cooler 106 to exchange heat with the low-temperature water supplement (tap water is usually selected as the low-temperature water supplement) flowing through the cooler 106, the heated low-temperature water enters a water storage tank (not shown) in the water heater, the high-pressure and low-temperature refrigerant passes through the throttle valve 104, the low-pressure and low-temperature refrigerant enters the wind-side heat exchanger 105 as an evaporator, and the low-temperature and low-pressure refrigerant gas.
When the ambient temperature is lower than zero degrees centigrade (which is common in autumn and winter in northern areas), the outer surface of the heat exchanger serving as the evaporator is likely to frost, so that the heat pump water heater is generally provided with a defrosting mode, the wind side heat exchanger 105 serves as a condenser, and the water side heat exchanger 103 serves as the evaporator, so that the cooler 106 is not needed, and related measures are needed to enable the refrigerant coming out of the throttle valve 104 to avoid the cooler 106 and directly enter the water side heat exchanger 103 in the defrosting mode of the heat pump water heater, and the avoiding assembly plays a role.
Specifically, the avoidance component includes a refrigerant bypass pipe 107 arranged in parallel with a section of the refrigerant main pipe 101 on which the cooler 106 is arranged, two ends of the refrigerant bypass pipe 107 are respectively and hermetically communicated with the refrigerant main pipe 101 one by one, and a first choke member for preventing the refrigerant from flowing into the cooler 106 from the throttle valve 104 is arranged between a communication position of the cooler 106 and one end of the refrigerant bypass pipe 107 adjacent to the refrigerant outlet end of the cooler 106 in the heating mode on the refrigerant main pipe 101.
The defrosting work principle is as follows: as shown in fig. 3, in the defrosting mode, the high-temperature and high-pressure exhaust gas of the compressor 102 firstly enters the wind-side heat exchanger 105 as a condenser through the four-way valve 110 to release heat, after the high-pressure and high-temperature liquid refrigerant with released heat passes through the throttle valve 104, the low-pressure and low-temperature refrigerant enters the water-side heat exchanger 103 as an evaporator through the refrigerant bypass pipe 107 and the first flow blocking element while avoiding the cooler 106, and the low-temperature and low-pressure refrigerant gas after absorbing heat is evaporated and returned to the compressor 102 again.
It should be noted that the first blocking element is generally a check valve (e.g., the first check valve 108 shown in fig. 1 to 3), and may be single, or certainly, a plurality of check valves may be selected as needed, and in addition, in order to improve the reliability of blocking, the first blocking element may also be or include only a solenoid valve, or may be single, or certainly, a plurality of check valves may be selected as needed.
Preferably, in order to prevent the refrigerant flowing out of the water-side heat exchanger 103 in the heating mode from directly flowing into the throttle valve 104 without passing through the cooler 106, the bypass module further includes a second choke provided in the refrigerant bypass pipe 107.
It should be noted that the second blocking element is usually a check valve (such as the second check valve 109 shown in fig. 1 to 3), and may be single, or certainly, a plurality of check valves may be selected as needed, and in addition, in order to improve the reliability of blocking, the first blocking element may also be or include only a solenoid valve, or certainly, the number of the first blocking element may be single, or certainly, a plurality of check valves may be selected as needed.
The water replenishing method of the efficient heat pump water heater is used for replenishing water to a water storage tank when the water storage tank in the heat pump water heater descends to a water replenishing level in a heating mode, the heat pump water heater is the efficient heat pump water heater, and the water replenishing method comprises the following steps.
Step 100, detecting the temperature of water in the current water storage tank.
And 200, performing different water replenishing operations according to different comparison relations between the temperature of the water in the current water storage tank and the set temperature range of the high-temperature water in the water storage tank.
Step 210, when the condition that the temperature of the water in the current water storage tank is within the temperature range of the high-temperature water in the set water storage tank is met, the water supplementing operation mode is that low-temperature water supplementing is injected into a water inlet on the cooler 106, the medium-temperature water supplementing heated by the cooler 106 and coming out of a water outlet of the cooler is conveyed into the water storage tank of the water heater, meanwhile, the water in the water storage tank of the water heater is conveyed to a water inlet of the water side heat exchanger 103, and the high-temperature water heated by the water side heat exchanger 103 and coming out of the water outlet of the water side heat exchanger is conveyed into the water storage tank of the.
Step 220, when the condition that the temperature of the water in the current water storage tank is smaller than the set temperature range of the high-temperature water in the water storage tank is met, the water supplementing operation mode is that the low-temperature water supplementing is stopped from being injected into the water storage tank of the water heater through the cooler 106, meanwhile, only the water in the water storage tank of the water heater is conveyed to the water inlet of the water side heat exchanger 103, and then the high-temperature water which is heated by the water side heat exchanger 103 and then flows out of the water outlet of the water side heat exchanger is conveyed into the water storage tank of the water heater.
And 300, repeating the steps until the water replenishing is completed.
A specific example of the application of the water replenishing method in the heat pump water heater listed above is given below, and the following example is an explanation of the present invention and the present invention is not limited to the following example.
As shown in fig. 2, the target temperature of the water in the water storage tank of the heat pump water heater is 55 ℃, the set temperature range of the high-temperature water in the water storage tank is set to be 42-50 ℃, and the temperature of the low-temperature water is selected to be 5-25 ℃.
The hot water in the high-temperature water storage tank (the water temperature in the water storage tank is more than 55 ℃) is used, when the water level is reduced to the water supplementing level, the unit receives a water supplementing signal, a water supplementing valve (not shown) is opened, low-temperature tap water (the water temperature is 5 ℃) firstly passes through the cooler 106, absorbs the energy of a high-temperature refrigerant in the cooler 106, the high-temperature refrigerant enters the water storage tank after being heated to 50 ℃, the heat of the high-temperature refrigerant is transferred to the water storage tank for storage, meanwhile, the high-temperature refrigerant is cooled to a low-temperature refrigerant (the temperature of the refrigerant is reduced to 15 ℃), the condensation supercooling degree is increased, the throttling loss is reduced.
In addition, when the temperature of the water in the water storage tank of the water heater is continuously reduced to the lower limit of the temperature range (selected to be between 42 ℃ and 50 ℃) of the high-temperature water in the set water storage tank, the low-temperature water replenishing is stopped from being filled into the water storage tank of the water heater, and only when the temperature of the water in the water storage tank is increased to the temperature allowing water replenishing again, the low-temperature water replenishing is re-filled into the water storage tank of the water heater through the cooler 106, and the energy transfer is carried out until the water in the water storage tank is fully replenished.
In the process, the water side heat exchanger 103 serving as a condenser starts a normal condensation function, the refrigerant is completely liquefied in the water side heat exchanger to prepare most of heat, and the cooler 106 recovers the energy of the liquid refrigerant to play a role in increasing supercooling, reduce throttling loss and improve the unit efficiency.
After the water replenishing method is applied, the capacity of the unit can be improved by 25% at the highest energy, and the energy efficiency can be improved by 20% at the highest energy.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as the refrigerant header 101, the compressor 102, the water side heat exchanger 103, the throttle valve 104, the wind side heat exchanger 105, the cooler 106, the refrigerant bypass pipe 107, the first check valve 108, the second check valve 109, the four-way valve 110, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (6)
1. The utility model provides a high-efficient heat pump water heater, includes compressor (102), water side heat exchanger (103), throttle, wind side heat exchanger (105) by refrigerant house steward (101) connection, its characterized in that: and a cooler (106) for performing secondary heat release on the refrigerant subjected to heat release by the water side heat exchanger (103) in the heating mode is arranged on the part, positioned between the water side heat exchanger (103) and the throttler, of the refrigerant header pipe (101).
2. The efficient heat pump water heater according to claim 1, wherein an avoidance assembly is further disposed between the water side heat exchanger (103) and the restrictor, and the avoidance assembly enables the refrigerant flowing out of the restrictor to avoid the cooler (106) and directly enter the water side heat exchanger (103) in the defrosting mode.
3. The efficient heat pump water heater according to claim 2, wherein the evasion assembly comprises a refrigerant bypass pipe (107) arranged in parallel with a section of the refrigerant main pipe (101) on which the cooler (106) is arranged, two ends of the refrigerant bypass pipe (107) are respectively in one-to-one sealing communication with the refrigerant main pipe (101), and a first flow blocking member for preventing the refrigerant from flowing into the cooler (106) from the restrictor is arranged between the communication positions of the cooler (106) on the refrigerant main pipe (101) and one end of the refrigerant bypass pipe (107) adjacent to the refrigerant outlet end of the cooler (106) in the heating mode.
4. The high-efficiency heat pump water heater according to claim 3, wherein the first flow resisting element is any one or more of a check valve and a solenoid valve.
5. The high-efficiency heat pump water heater according to claim 2, wherein the evasion assembly further comprises a second flow blocking element arranged on the refrigerant bypass pipe (107) and used for preventing the refrigerant flowing out of the water-side heat exchanger (103) in the heating mode from directly flowing into the restrictor without passing through the cooler (106).
6. The efficient heat pump water heater according to claim 5, wherein the second flow blocking element is any one or more of a check valve and a solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021258514.4U CN212320082U (en) | 2020-06-30 | 2020-06-30 | High-efficiency heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021258514.4U CN212320082U (en) | 2020-06-30 | 2020-06-30 | High-efficiency heat pump water heater |
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| Publication Number | Publication Date |
|---|---|
| CN212320082U true CN212320082U (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021258514.4U Active CN212320082U (en) | 2020-06-30 | 2020-06-30 | High-efficiency heat pump water heater |
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| Country | Link |
|---|---|
| CN (1) | CN212320082U (en) |
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2020
- 2020-06-30 CN CN202021258514.4U patent/CN212320082U/en active Active
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Address after: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Patentee after: Zhejiang Zhongguang Electric Appliance Group Co.,Ltd. Address before: 323000 No.96 Yunjing Road, Shuige Industrial Park, Lishui City, Zhejiang Province Patentee before: ZHEJIANG ZHONGGUANG ELECTRIC APPLIANCES Co.,Ltd. |