CN109990464B - Domestic integral air conditioning heat pump water heater - Google Patents
Domestic integral air conditioning heat pump water heater Download PDFInfo
- Publication number
- CN109990464B CN109990464B CN201910165573.2A CN201910165573A CN109990464B CN 109990464 B CN109990464 B CN 109990464B CN 201910165573 A CN201910165573 A CN 201910165573A CN 109990464 B CN109990464 B CN 109990464B
- Authority
- CN
- China
- Prior art keywords
- water tank
- temperature
- evaporator
- heat pump
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a household integral type cold air heat pump water heater, which comprises a water tank, an evaporator, a compressor, a fan, a heat conduction coil pipe, a shell, a pipeline and a direct current motor, wherein the water tank is connected with the evaporator through the heat conduction coil pipe; the top end of the evaporator is provided with a plurality of nozzles; the nozzle is connected with the water tank through a pipeline; the pipeline is provided with an electromagnetic valve; the top of the water tank is provided with a foaming hole, the heat-conducting coil pipe is spirally arranged on the outer side of the water tank, and the distance between the heat-conducting coil pipe and the shell is 45-55 mm; the foaming material enters from the foaming hole and is filled between the heat-conducting coil and the shell; the invention adopts the integral foaming technology to enhance the heat preservation performance, the foaming hole is arranged at the top of the water tank, the water tank can be foamed by means of gravity and pressure, the periphery of the heat pump part can be well foamed by means of pressure, the aim of integral foaming is achieved, meanwhile, the integral foaming can reduce heat leakage and ineffective heat dissipation of the air water heater in the heating process, and simultaneously, the inlet air after integral foaming can firstly pass through the high-temperature cavity operated by the compressor, so that the operation temperature of the unit can be improved at low temperature.
Description
Technical Field
The invention relates to the technical field of heat pump water heaters, in particular to a household integral type cold air heat pump water heater.
Background
The air energy water heater adopts a reverse Carnot principle (a principle opposite to an air conditioner), absorbs heat from low-temperature air, transfers the heat to high-temperature water, and realizes a heating process.
a. At present, the common energy efficiency in the industry is lower due to the structural limitation of the household integral air energy water heater unit.
b. Meanwhile, the cold energy of a plurality of household integral air energy water heater units is wasted, or the cold energy cannot be utilized to meet the normal use requirement of a user.
Chinese patent (CN104776605B)) discloses a heat pump water heater control method, a controller and a heat pump water heater, the method comprises: storing outdoor environment temperature values of a plurality of preset time points acquired by a first temperature sensor; when the heat pump water heater is in an intelligent mode, inquiring outdoor environment temperature values obtained at the preset time points within n days before, wherein n is a preset positive integer; obtaining the average value of the outdoor environment temperature values of different preset time points in the previous n days according to the query result; and determining the starting time of the heat pump unit of the heat pump water heater on the day according to all the average values. According to the heat pump water heater control method, the controller and the heat pump water heater, an intelligent mode is added, so that the problems that the energy consumption of a heat pump unit is high in an automatic control mode, the operation is complicated in a timing control mode and the user experience is poor in the conventional heat pump water heater are solved; however, the heat pump water heater disclosed by the patent has poor heat preservation effect, the process problems of heat leakage and heat dissipation are easy to occur in the heating process, and the energy efficiency ratio of the heat pump water heater is poor.
The Chinese invention patent (CN104896733B) provides a control method and a control device of a heat pump water heater and the heat pump water heater, wherein the heat pump water heater comprises a water tank, and the control method of the heat pump water heater comprises the following steps: receiving water temperature and water time set by a user aiming at the heat pump water heater; detecting the ambient temperature of the heat pump water heater and the water temperature in the water tank; calculating the heating time required for heating the water in the water tank to the water temperature according to the environment temperature, the water using temperature, the water quantity in the water tank and the performance parameters of the heat pump water heater; and determining the starting time of heating of the heat pump water heater according to the water using time and the heating duration, and starting the heat pump water heater to heat when the system time reaches the starting time. Although the time that the heat pump water heater starts to heat can be adjusted according to the actual working condition of the heat pump water heater, the problem that the heat pump water heater finishes heating for a long time in advance and more energy is wasted due to the heat dissipation problem is solved, the heat pump water heater cannot be accurately controlled according to actual needs, particularly, the relation between the running conditions of a compressor, an evaporator and the like, the heating time and the water temperature used for the water heating is not provided, and the problem of energy waste is also solved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the integral type cold air heat pump water heater, wherein the top end of the evaporator is provided with a plurality of nozzles; the evaporator is sprayed through the nozzle in the heating process of the water heater, the running evaporation temperature of the cold air heat pump water heater is effectively provided, and therefore the energy efficiency ratio of the cold air heat pump water heater is provided.
A household integral type cold air heat pump water heater comprises a water tank, an evaporator, a compressor, a fan, a heat conducting coil, a shell, a pipeline and a direct current motor; it is characterized in that the preparation method is characterized in that,
the top end of the evaporator is provided with a plurality of nozzles; the nozzle is connected with the water tank through a pipeline; the pipeline is provided with an electromagnetic valve;
the top of the water tank is provided with a foaming hole, the heat-conducting coil pipe is spirally arranged on the outer side of the water tank, and the distance between the heat-conducting coil pipe and the shell is 45-55 mm; the foaming material enters from the foaming hole and then is filled between the heat-conducting coil and the shell;
the fan is connected with the evaporator, the evaporator is connected with the compressor through a pipeline, and the water tank is connected with the compressor through a pipeline;
the evaporator is connected with the direct current motor;
a throttle valve or a throttle capillary is also arranged on a pipeline between the water tank and the evaporator;
the shell is provided with a controller, and the controller comprises
A temperature detection unit for detecting the temperature of the lower part of the water tank;
a flow rate control unit for adjusting and controlling the flow rate of the nozzle;
the judging unit further comprises a calculating unit for calculating a difference value between the target water use temperature and the temperature of the lower part of the water tank detected by the temperature detecting unit;
the control unit is used for controlling the flow rate of the nozzle and the running power of the compressor and the evaporator according to the result of the judging unit;
and the execution unit is used for controlling the flow rate of the nozzle, the compressor and the evaporator in the flow rate control unit according to the result of the judgment unit.
Preferably, the judging unit comprises a first judging unit and a second judging unit;
the first judging unit is used for judging the relation between the difference value of the target water temperature Tm of the user and the lower temperature Tc of the water tank and 0;
and the second judgment unit is used for judging the relation between the difference value between the target water temperature Tm of the user and the lower water tank temperature Tc and a judgment value delta T, wherein the judgment value delta T is an empirical value, and the delta T is more than 0 ℃.
Preferably, the controller comprises a heating mode, a ventilation mode and a switching device; the switching device switches the heating mode and the ventilation mode according to the result of the first judging unit.
Preferably, the temperature detection unit comprises a plurality of temperature sensors, and the detected temperature value at the lower part of the water tank is an arithmetic mean value of a plurality of temperature values.
Preferably, the foaming material is poly (methylpolyphenylene isocyanate).
Preferably, the bottom of the water tank is convex.
Preferably, the top end of the shell is provided with an air outlet and an air inlet; the air outlet is provided with an air outlet air receiving pipe, the tail end of the air outlet air receiving pipe is provided with a separation blade, and the separation blade is used for controlling the air outlet direction.
Preferably, the controller is electrically connected with the blocking piece and used for controlling the movement direction of the blocking piece.
The control method of the household integral type cold air heat pump water heater comprises the following steps;
s1: setting a target water temperature Tm of a user, and detecting a temperature Tc at the lower part of the water tank through a temperature detection unit;
s2: judging the relation between Tm-Tc and 0 through a first judging unit;
s3: if Tm-Tc is less than 0, the controller controls the switching device to enter a ventilation mode;
s4: if Tm-Tc is greater than 0, the controller controls the switching device to enter a heating mode; setting the judgment value as delta T, and judging the relation between Tm-Tc and delta T through a second judgment unit;
s5: if Tm-Tc is larger than Delta T, the compressor and the evaporator work at 100% power, and the flow rate of the nozzle is controlled to be maximum Vmax;
s6: when Tm-Tc < Δ T, a ratio a of Tm-Tc/Δ T is calculated, the compressor and the evaporator are operated in a power mode of a × 100%, and the flow rate of the nozzle is controlled to Vc — Vmax × a.
Compared with the prior art, the invention has the following beneficial effects:
(1) the top of the water tank of the integral type cold air heat pump water heater is provided with a foaming hole, the heat conducting coil pipe is spirally arranged on the outer side of the water tank, and the distance between the heat conducting coil pipe and the shell is 45-55 mm; the foaming material enters from the foaming hole and is filled between the heat-conducting coil and the shell; the water tank is foamed by the foaming hole at the top of the water tank depending on gravity and pressure, the periphery of the heat pump part is foamed well depending on pressure, the purpose of integral foaming is achieved, and the water tank can be foamed completely only once. Meanwhile, the whole foaming can reduce the heat leakage and ineffective heat dissipation of the air water heater in the heating process, and the running temperature of the unit can be improved at low temperature.
(2) The top end of the evaporator in the integral type cold air heat pump water heater provided by the invention is provided with a plurality of nozzles; the evaporator is sprayed through the nozzle in the heating process of the water heater, the running evaporation temperature of the cold air heat pump water heater is effectively provided, and therefore the energy efficiency ratio of the cold air heat pump water heater is provided.
(3) The evaporator provided by the invention is connected with a direct current motor; the air outlet of the evaporator is controlled by the direct current motor, so that the speed regulation performance of the direct current motor is good, the loss is small, the efficiency is high, and the power factor is high, thereby reducing the power consumption of the fan to a certain extent.
(4) The bottom surface of the water tank provided by the invention is a convex surface, the single convex inner container is adopted, the accumulation of cold water in the water tank is reduced, the unit performance is improved, and meanwhile, a mode is specially invented for solving the problem that the cold energy of the existing unit is wasted or unreasonable in utilization, and the requirement of a user on using the cold energy is met.
(5) The invention compares the real-time temperature of the lower part of the water tank detected by the temperature detection unit with the target temperature of the water for users, carries out the operation of heating or ventilation mode on the hot water heating pump, compares the difference value of the real-time temperature of the lower part of the water tank and the target temperature of the water for users with the preset value, and sends corresponding execution signals to the evaporator, the compressor and the flow control unit by the controller, thereby leading the evaporator and the compressor to automatically carry out the work power control in real time and reducing the energy consumption to the maximum extent.
Drawings
FIG. 1 is a schematic structural diagram of an integrated cold air heat pump water heater provided by the invention;
FIG. 2 is a top view of the integrated chilled air heat pump water heater provided by the present invention;
FIG. 3 is a front view of the integrated chilled air heat pump water heater provided by the present invention;
FIG. 4 is a schematic view of the opposite side of the front view of the integrated chilled air heat pump water heater provided by the present invention;
FIG. 5 is a schematic diagram of the operation of the integrated cold air heat pump water heater provided by the invention;
FIG. 6 is a schematic view of the air outlet direction controlled by the baffle plate according to the present invention;
FIG. 7 is a flow chart of a control method of the integrated cold air heat pump water heater provided by the invention;
the specific meanings of the symbols in the drawings are as follows:
1. foaming pores; 2. a water tank; 3. a controller;
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Referring to fig. 1-6, a household integral type cold air heat pump water heater comprises a water tank, an evaporator, a compressor, a fan, a heat conducting coil, a shell, a pipeline and a direct current motor; the top end of the evaporator is provided with a plurality of nozzles; the nozzle is connected with the water tank through a pipeline; the top end of the evaporator in the integral type cold air heat pump water heater provided by the invention is provided with a plurality of nozzles; the evaporator is sprayed through the nozzle in the heating process of the water heater, so that the running evaporation temperature of the cold air heat pump water heater is effectively provided, and the energy efficiency ratio of the cold air heat pump water heater is further provided;
the pipeline is provided with an electromagnetic valve; the top of the water tank is provided with a foaming hole 1, the heat-conducting coil pipe is spirally arranged on the outer side of the water tank, and the distance between the heat-conducting coil pipe and the shell is 45-55 mm; foaming materials enter from the foaming holes 1 and then are filled between the heat conducting coil and the shell; the invention forms an integral foaming technology to enhance the heat preservation performance, the foaming hole is arranged at the top of the water tank, the water tank can be foamed by gravity and pressure, the periphery of the heat pump part can be well foamed by pressure, the aim of integral foaming is achieved, and the foaming can be completed only by foaming once. Meanwhile, the whole foaming can reduce the heat leakage and ineffective heat dissipation of the air water heater in the heating process, and the running temperature of the unit can be improved at low temperature.
The fan is connected with the evaporator, the evaporator is connected with the compressor through a pipeline, and the water tank 2 is connected with the compressor through a pipeline; the evaporator is connected with the direct current motor; a throttle valve or a throttle capillary is also arranged on the pipeline between the water tank 2 and the evaporator; the shell is provided with a controller 3; the controller 3 includes a temperature detection unit for detecting the temperature of the lower portion of the water tank; a flow rate control unit for adjusting and controlling the flow rate of the nozzle; the judging unit further comprises a calculating unit for calculating a difference value between the target water use temperature and the temperature of the lower part of the water tank detected by the temperature detecting unit; the control unit is used for controlling the flow rate of the nozzle and the running power of the compressor and the evaporator according to the result of the judging unit; and the execution unit is used for controlling the flow rate of the nozzle, the compressor and the evaporator in the flow rate control unit according to the result of the judgment unit.
The judging unit comprises a first judging unit and a second judging unit;
the first judging unit is used for judging the relation between the difference value of the target water temperature Tm of the user and the lower temperature Tc of the water tank 2 and 0;
if Tm-Tc is less than 0, the controller controls the switching device to enter a ventilation mode;
if Tm-Tc is greater than 0, the controller controls the switching device to enter a heating mode;
and the second judgment unit is used for judging the relation between the difference value between the target water temperature Tm of the user and the lower temperature Tc of the water tank 2 and a judgment value delta T, wherein the judgment value delta T is an empirical value, and the delta T is more than 0 ℃.
Setting the judgment value as delta T, and judging the relation between Tm-Tc and delta T through a second judgment unit;
if Tm-Tc is larger than Delta T, the compressor and the evaporator work at 100% power, and the flow rate of the nozzle is controlled to be maximum Vmax;
s6: when Tm-Tc < Δ T, a ratio a of Tm-Tc/Δ T is calculated, the compressor and the evaporator are operated at 100% power in a power mode of a × 100%, and the flow rate of the nozzle is controlled to Vc ═ Vmax × a.
The controller comprises a heating mode, a ventilation mode and a switching device; the switching device switches the heating mode and the ventilation mode according to the result of the first judging unit.
The temperature detection unit comprises a plurality of temperature sensors, the detected temperature value at the lower part of the water tank 2 is the arithmetic mean value of a plurality of temperature values, and the foaming material is isocyanate poly (methyl polyphenylene oxide). The bottom of the water tank is convex. The top end of the shell is provided with an air outlet and an air inlet; the air outlet is provided with an air outlet air receiving pipe, the tail end of the air outlet air receiving pipe is provided with a separation blade, and the separation blade is used for controlling the air outlet direction. The controller 3 is electrically connected with the blocking piece and is used for controlling the movement direction of the blocking piece.
The control method of the household integral type cold air heat pump water heater comprises the following steps;
s1: setting a target water temperature Tm of a user, and detecting a temperature Tc at the lower part of the water tank through a temperature detection unit;
s2: judging the relation between Tm-Tc and 0 through a first judging unit;
s3: if Tm-Tc is less than 0, the controller controls the switching device to enter a ventilation mode;
s4: if Tm-Tc is greater than 0, the controller controls the switching device to enter a heating mode; setting the judgment value as delta T, and judging the relation between Tm-Tc and delta T through a second judgment unit;
s5: if Tm-Tc is larger than Delta T, the compressor and the evaporator work at 100% power, and the flow rate of the nozzle is controlled to be maximum Vmax;
s6: when Tm-Tc < Δ T, a ratio a of Tm-Tc/Δ T is calculated, the compressor and the evaporator are operated at 100% power in a power mode of a × 100%, and the flow rate of the nozzle is controlled to Vc ═ Vmax × a.
The control method of the household integral type cold air heat pump water heater provided by the invention has the advantages that the controller sends corresponding execution signals to the evaporator, the compressor and the flow control unit, so that the power and the flow of the evaporator, the compressor and the flow control unit are controlled according to the result of the judging unit, and the energy consumption is reduced to the maximum extent.
The above-described series of detailed descriptions are merely specific to possible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and various changes made without departing from the gist of the present invention within the knowledge of those skilled in the art are included in the scope of the present invention.
Claims (6)
1. A control method of a household integral type cold air heat pump water heater comprises a water tank, an evaporator, a compressor, a fan, a heat conducting coil, a shell, a pipeline and a direct current motor; the top end of the evaporator is provided with a plurality of nozzles; the nozzle is connected with the water tank through a pipeline; the pipeline is provided with an electromagnetic valve;
the top of the water tank is provided with a foaming hole, the heat-conducting coil pipe is spirally arranged on the outer side of the water tank, and the distance between the heat-conducting coil pipe and the shell is 45-55 mm; the foaming material enters from the foaming hole and then is filled between the heat-conducting coil and the shell;
the fan is connected with the evaporator, the evaporator is connected with the compressor through a pipeline, and the water tank is connected with the compressor through a pipeline;
the evaporator is connected with the direct current motor;
a throttle valve or a throttle capillary is also arranged on a pipeline between the water tank and the evaporator;
the shell is provided with a controller, and the controller comprises
A temperature detection unit for detecting the temperature of the lower part of the water tank;
a flow rate control unit for adjusting and controlling the flow rate of the nozzle;
the judging unit further comprises a calculating unit for calculating a difference value between the target water use temperature and the temperature of the lower part of the water tank detected by the temperature detecting unit;
the control unit is used for controlling the flow rate of the nozzle and the running power of the compressor and the evaporator according to the result of the judging unit;
the execution unit controls the flow rate of the nozzle in the flow rate control unit, the compressor and the evaporator according to the result of the judgment unit;
the judging unit comprises a first judging unit and a second judging unit;
the first judging unit is used for judging the relation between the difference value of the target water temperature Tm of the user and the lower temperature Tc of the water tank and 0;
the second judgment unit is used for judging the relation between the difference value between the target water temperature Tm of the user and the lower water tank temperature Tc and a judgment value delta T, wherein the judgment value delta T is an empirical value, and the delta T is greater than 0 ℃;
the controller comprises a heating mode, a ventilation mode and a switching device; the switching device switches the heating mode and the ventilation mode according to the result of the first judging unit;
the control method of the household integral type cold air heat pump water heater is characterized by comprising the following steps of;
s1: setting a target water temperature Tm of a user, and detecting a temperature Tc at the lower part of the water tank through a temperature detection unit;
s2: judging the relation between Tm-Tc and 0 through a first judging unit;
s3: if Tm-Tc is less than 0, the controller controls the switching device to enter a ventilation mode;
s4: if Tm-Tc is greater than 0, the controller controls the switching device to enter a heating mode; setting the judgment value as delta T, and judging the relation between Tm-Tc and delta T through a second judgment unit;
s5: if Tm-Tc is larger than Delta T, the compressor and the evaporator work at 100% power, and the flow rate of the nozzle is controlled to be maximum Vmax;
s6: when Tm-Tc < Δ T, a ratio a of Tm-Tc/Δ T is calculated, the compressor and the evaporator are operated in a power mode of a × 100%, and the flow rate of the nozzle is controlled to Vc — Vmax × a.
2. A control method of an integral cool air heat pump water heater for home use as claimed in claim 1, wherein the temperature detecting unit includes a plurality of temperature sensors, and the detected temperature value of the lower part of the water tank is an arithmetic mean of a plurality of temperature values.
3. A control method of an integral type cold air heat pump water heater for home use as claimed in claim 1, wherein said foaming material is poly (methylpolyphenylene isocyanate).
4. A control method of an integral cool air heat pump water heater for home use as claimed in claim 1, wherein the bottom of the water tank is convex.
5. A control method of an integral cool air heat pump water heater for household as claimed in claim 1, wherein the top end of the housing is provided with an air outlet and an air inlet; the air outlet is provided with an air outlet air receiving pipe, the tail end of the air outlet air receiving pipe is provided with a separation blade, and the separation blade is used for controlling the air outlet direction.
6. A control method of an integral cool air heat pump water heater for household as claimed in claim 5, wherein said controller is electrically connected to said flap for controlling the moving direction of the flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165573.2A CN109990464B (en) | 2019-03-05 | 2019-03-05 | Domestic integral air conditioning heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165573.2A CN109990464B (en) | 2019-03-05 | 2019-03-05 | Domestic integral air conditioning heat pump water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990464A CN109990464A (en) | 2019-07-09 |
| CN109990464B true CN109990464B (en) | 2020-01-14 |
Family
ID=67130110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910165573.2A Active CN109990464B (en) | 2019-03-05 | 2019-03-05 | Domestic integral air conditioning heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990464B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547955U (en) * | 2009-11-07 | 2010-08-11 | 广东美的电器股份有限公司 | Air-source refrigerant cycling heat pump water heater |
| KR101348846B1 (en) * | 2012-07-17 | 2014-01-07 | 신남섭 | Heat pump boiler |
| CN203132144U (en) * | 2013-03-05 | 2013-08-14 | 广东美的电器股份有限公司 | Water heater |
| CN104266354A (en) * | 2014-10-16 | 2015-01-07 | 广东美的暖通设备有限公司 | Heat pump water heater |
| CN104534650A (en) * | 2014-12-12 | 2015-04-22 | 广东芬尼电器有限公司 | Household integral air energy water heater |
| CN207729833U (en) * | 2017-12-11 | 2018-08-14 | 广东芬尼科技股份有限公司 | A kind of circulating heat pump water heater |
-
2019
- 2019-03-05 CN CN201910165573.2A patent/CN109990464B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109990464A (en) | 2019-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205939805U (en) | Integrated machine of air conditioner and water heater | |
| CN204787394U (en) | Fountain refrigerating plant | |
| CN201706831U (en) | Energy-saving constant-temperature constant-humid preserving refrigeratory system | |
| CN104728972B (en) | A kind of energy storage type phase transformation air-conditioning system and its control method | |
| CN104677048A (en) | Air capacity control method for refrigerating compartment of refrigerator and refrigerator | |
| CN201803567U (en) | Defrosting control system of refrigerator | |
| CN202204149U (en) | Direct-heating type domestic heat pump water heater | |
| CN101889713B (en) | Solar-heat pump combined food air thawing system and thawing method | |
| CN105698382A (en) | Heat-pump water heater and controlling method thereof | |
| CN103807939A (en) | Four-season uninterrupted air conditioning equipment for user timing starting of cold storage and heat storage | |
| CN109990464B (en) | Domestic integral air conditioning heat pump water heater | |
| CN209116477U (en) | High energy-saving refrigeration/heating circulating water path system | |
| CN104214869A (en) | Highly-efficient chilled water storage device | |
| CN101886834A (en) | Constant-temperature constant-moisture air-conditioning system of constant energy type | |
| CN201265981Y (en) | Water heating apparatus of flexible two-stage coupling phase-change energy accumulation defrosting heat pump | |
| CN204128269U (en) | A kind of is the refrigerator of water heater heat supply | |
| CN207050130U (en) | It is a kind of to determine frequency energy storage type mobile air conditioner | |
| CN2508167Y (en) | Condensed heat recovering device for central conditioning system | |
| CN201992941U (en) | Air-cooled refrigerator | |
| CN201344588Y (en) | Heat pump hot water unit capable of reliably supplying water | |
| CN114413451A (en) | Vertical cabinet type household air conditioner indoor unit and control method thereof | |
| CN208205329U (en) | A kind of defrosting control system of multi-evaporator inverter air conditioner system | |
| CN102721174A (en) | Household variable-capacitance stepless regulation instant heat-pump water heater | |
| CN102287916A (en) | Kitchen heat pump device | |
| CN112066587A (en) | Cold source device, double-cold-source cold and hot water unit and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |