Chassis water storage evaporator and water tank integrated combined type heat recovery heat pump water heater

Abstract

The utility model discloses a base plate water storage evaporator and water tank integrated combined type heat recovery heat pump water heater, and relates to the technical field of air energy water heaters, the base plate water storage evaporator and water tank integrated combined type heat recovery heat pump water heater comprises a cold water outlet, and the cold water outlet is connected with a household tap water outlet end; the heat preservation water tank is provided with a water inlet and a water outlet, the water outlet is connected with a water outlet pipe, and the output end of the water outlet pipe is a hot water outlet; the heating circulation pipeline is provided with a working medium, a compressor, a condensation high-pressure heater, a throttling valve and a chassis heat absorption evaporator, the condensation high-pressure heater is arranged in the heat preservation water tank, a chassis used for containing warm waste water is arranged at the bottom of the heat preservation water tank, the chassis heat absorption evaporator is arranged in the chassis, and an upper cover is arranged at the top of the chassis. The upper cover is provided with a plurality of water inlets. The return air of the compressor is preheated through the recycled heat, the compressor can keep a good operation state even in low-temperature weather, the energy-saving effect can be achieved, the service life of the compressor can be effectively prolonged, and the efficiency of the compressor can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air energy water heater, specifically is a bottom plate water storage evaporator and water tank integrated combined heat recovery heat pump water heater. BACKGROUND

[0002] Air energy water heater is according to " inverse Carnot " principle works, specifically, it is " outdoor unit " as heat exchanger from outdoor air heat absorption, heats low boiling point working medium ( refrigerant ) and makes it evaporate, and refrigerant vapor is compressed by heat pump ( compressor ) and enters the water tank, and the heat is released to the water in the water tank and condenses liquefaction, and then throttling pressure reduction and temperature reduction return to the heat exchanger of outdoor and enter the next cycle.

[0003] But the heat pump water heater on the market currently has the following defects in the use process:

[0004] 1, when bathing, a large number of warm waste water is difficult to directly utilize, and direct discharge will undoubtedly cause a large amount of resource waste;

[0005] 2, in low temperature weather, especially in winter in the north, due to the return air temperature reduction of heat pump, will make the heating efficiency of heat pump reduce, thereby not reaching the energy-saving purpose;

[0006] 3, need to install outdoor unit, on the one hand, outdoor unit occupies much ground, and the system composed of outdoor unit and indoor unit is complex and easy to damage; On the other hand, most of the houses on the market are decorated, and the traditional heat pump water heater must be punched and piped again, which has great installation difficulty, high cost and is not easy to promote the product. INVENTION CONTENTS

[0007] In order to solve the problems in the above related technologies, the present application provides the following technical solutions:

[0008] A bottom plate water storage evaporator and water tank integrated combined heat recovery heat pump water heater, comprising a cold water outlet, the cold water outlet is connected with the water outlet end of domestic tap water;

[0009] The heat preservation water tank has a water inlet and a water outlet, the water outlet is connected with a water outlet pipe, and the output end of the water outlet pipe is a hot water outlet;

[0010] A heating cycle pipeline with working medium, compressor, condensing high pressure heater, throttle valve and bottom plate heat absorption evaporator, the condensing high pressure heater is arranged in the interior of the heat preservation water tank, the bottom plate of the heat preservation water tank is provided with a bottom plate for containing warm waste water, the bottom plate heat absorption evaporator is arranged in the interior of the bottom plate, the top of the bottom plate is provided with an upper cover, and the upper cover has a plurality of water inlet holes.

[0011] Through the technical scheme, when the heat pump water heater works, the high-temperature and high-pressure liquid working medium heats the tap water in the water tank under the heat exchange of the condensing high-pressure heater, the high-pressure liquid working medium evaporates into low-temperature and low-pressure gas in the bottom heat-absorbing evaporator after passing through the throttling valve, and finally returns to the compressor to enter the next cycle. When the user takes a bath, the warm waste water will enter the bottom plate from the water inlet hole and contact the bottom heat-absorbing evaporator, and the bottom heat-absorbing evaporator absorbs the heat in the warm waste water, so that the heat can be recycled, and the return gas temperature of the compressor can be close to the optimal temperature of 25 degrees, thereby achieving the effect of energy saving.

[0012] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater described in the application, the condensing high-pressure heater is located at a position close to the water inlet of the heat-insulating water tank.

[0013] Through the technical scheme, when the low-temperature tap water enters the water tank, the water temperature around the water inlet is low, which can increase the temperature difference between the condensing high-pressure heater and the water tank, thereby improving the heat exchange efficiency.

[0014] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater described in the application, the inside of the heat-insulating water tank is provided with a temperature sensor, and the temperature sensor is electrically connected with the compressor through a controller.

[0015] Through the technical scheme, the water temperature monitored by the temperature sensor is fed back to the controller to control the start and stop of the compressor, so that the water temperature can be stably maintained within a certain range.

[0016] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater described in the application, the inside of the bottom plate is provided with an overflow pipe for discharging cold water at the bottom of the bottom plate.

[0017] Through the technical scheme, the low-temperature sewage at the bottom of the bottom plate is discharged in time, which helps the high-temperature water at the top of the bottom plate to flow downward, thereby improving the heat exchange efficiency of the warm sewage and the bottom heat-absorbing evaporator, and improving the heat recovery effect.

[0018] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater described in the application, the bottom of the bottom plate is provided with a sewage discharge port, and the sewage discharge port is provided with a valve.

[0019] Through the technical scheme, after the user finishes taking a bath, the sewage can be discharged from the bottom plate in time, so that the inside of the bottom plate can be kept clean.

[0020] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater, the auxiliary heating device is arranged on the return flow pipeline between the bottom heat absorption evaporator and the compressor.

[0021] According to the technical scheme, when the return gas temperature after heat recovery of the bottom heat absorption evaporator is insufficient to reach the appropriate return gas temperature of the compressor due to low temperature weather, the auxiliary heating device directly heats the working medium return gas, so that the return gas temperature can be maintained at 25 degrees, thereby enabling the compressor to maintain a better operating state.

[0022] As a preferred scheme of the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater, the auxiliary heating device includes an electric heating element, a fan and a radiator, and the radiator is connected to the return flow pipeline between the bottom heat absorption evaporator and the compressor.

[0023] According to the technical scheme, the fan and the electric heating element cooperate to deliver warm air to the radiator, and the radiator heats the return flow pipeline after absorbing heat.

[0024] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0025] The heat pump water heater can recover heat from the warm waste water, preheat the return gas of the compressor by the recovered heat, and enable the compressor to maintain a better operating state even in low temperature weather, thereby achieving energy saving effect, and effectively improving the service life and efficiency of the compressor.

[0026] The heat pump water heater does not need to be installed with an "outdoor unit", and does not need to punch holes and lay pipes during installation, thereby reducing installation difficulty and cost, and facilitating market promotion of the product. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The drawings are schematic diagrams of the principles of the embodiments of the present application;

[0028] Figure 2 The drawings are schematic diagrams of the principles of the embodiments of the present application;

[0029] In the drawings: 1, cold water outlet; 2, heat preservation water tank; 3, water inlet; 4, water outlet; 5, water outlet pipe; 6, hot water outlet; 7, compressor; 8, condensing high pressure heater; 9, throttling valve; 10, bottom heat absorption evaporator; 11, bottom plate; 12, upper cover; 13, water inlet hole; 14, temperature sensor; 15, overflow pipe; 16, sewage outlet; 17, electric heating element; 18, fan; 19, radiator. DETAILED DESCRIPTION

[0030] For the purpose, technical solutions and advantages of the present application to be more clear, the following will be combined with the drawings of the present application to further describe the embodiments of the present application in detail. Figures 1-2 The embodiments of the present application are further described in detail.

[0031] The present embodiment provides a bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater, please refer to Figure 1 , the bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater comprises a cold water outlet 1, the cold water outlet 1 is connected with the household water outlet end; the heat preservation water tank 2 has a water inlet 3 and a water outlet 4, the water outlet 4 is connected with the water outlet pipe 5, and the output end of the water outlet pipe 5 is the hot water outlet 6; the cold water outlet 1 and the hot water outlet 6 are connected together through the valve, which can provide users with different temperature of warm tap water.

[0032] The bottom water storage evaporator and water tank integrated combined heat recovery heat pump water heater further comprises a heating cycle pipeline with working medium, compressor 7, condensing high pressure heater 8, throttling valve 9 and bottom heat absorption evaporator 10. In the case, the working medium adopts 410A refrigerant, and other embodiments can also use the remaining types of refrigerants commonly used in air conditioners and air energy water heaters.

[0033] The condensing high pressure heater 8 and the bottom heat absorption evaporator 10 in the case are both made of long copper pipes coiled, the condensing high pressure heater 8 is arranged in the inside of the heat preservation water tank 2, and the condensing high pressure heater 8 is located at the position close to the water inlet 3 of the heat preservation water tank 2; the inside of the heat preservation water tank 2 is provided with a temperature sensor 14, the temperature sensor 14 is electrically connected with the compressor 7 through the controller, the temperature inside the water tank is monitored through the temperature sensor 14, and the temperature data is fed back to the controller, so that the start and stop of the compressor 7 is controlled through the controller, so that the temperature inside the heat preservation water tank 2 is kept constant in a certain range.

[0034] Please refer to Figure 1 and Figure 2 , the bottom of the heat preservation water tank 2 is provided with a bottom disc 11 for containing warm waste water, the bottom heat absorption evaporator 10 is arranged in the inside of the bottom disc 11, the top of the bottom disc 11 is provided with an upper cover 12, the upper cover 12 has a plurality of water inlet holes 13; a bearing frame is arranged between the bottom disc 11 and the upper cover 12, the bearing frame in the case is fixedly arranged on the inner wall of the bottom of the bottom disc 11 by a plurality of bearing columns, so that the upper cover 12 can be supported on the basis of not affecting the layout of the bottom heat absorption evaporator 10, and the upper cover 12 can bear the weight of at least two adults.

[0035] The bottom plate 11 is internally provided with an overflow pipe 15 for discharging the cold water at the bottom of the bottom plate 11, the bottom end of the overflow pipe 15 is close to the bottom of the bottom plate 11, the top end of the overflow pipe 15 is higher than the bottom plate heat absorbing evaporator 10, when the water level in the bottom plate 11 is higher than the top end of the overflow pipe 15, the low-temperature water at the bottom of the bottom plate 11 can be discharged, thereby increasing the heat transfer efficiency between the warm waste water at the top of the bottom plate 11 and the bottom plate heat absorbing evaporator 10. The bottom of the bottom plate 11 is provided with a sewage outlet 16, the sewage outlet 16 is provided with a valve, and the waste water can be discharged through the sewage outlet 16.

[0036] Each set of heat preservation water tank 2 is correspondingly provided with a set of heating circulating pipeline, and the plurality of sets of heating circulating pipelines are connected in parallel and share the same compressor 7 and bottom plate 11, so as to utilize the space of the heat pump water heater as much as possible. In the case, the heat preservation water tank 2 adopts two sets of vertical water tanks, and the two sets of heat preservation water tanks 2 are arranged on the two sides of the bottom plate 11; in other embodiments, the arrangement of the heat preservation water tank 2 is not limited to the number and any mounting manner, for example, a wall-mounted water tank, an upper top water tank, etc.

[0037] In the case, the throttle valve 9, the capillary tube (the condensing high-pressure heater 8 and the bottom plate heat absorbing evaporator 10) are provided in two groups, and in actual use, only one group can be provided.

[0038] The auxiliary heating device is arranged on the return pipeline between the bottom plate heat absorbing evaporator 10 and the compressor 7, and in the case, the auxiliary heating device adopts an electric heating mode. The auxiliary heating device includes an electric heating element 17, a fan 18 and a radiator 19, the radiator 19 is connected to the return pipeline between the bottom plate heat absorbing evaporator 10 and the compressor 7, the electric heating element 17 and the fan 18 are arranged on one side of the radiator 19, and in the case, the electric heating element 17 can adopt an electric heating wire to supply heat, the warm air generated by the electric heating element 17 and the fan 18 heats the radiator 19, so that the return air temperature of the compressor 7 approaches the optimal temperature of 25 degrees, so that the compressor 7 maintains a better operating state, which not only prolongs the service life of the compressor 7, but also achieves the effect of energy saving.

[0039] In addition, the electric heating element 17 and the fan 18 can also be used independently when the compressor 7 is in a stopped state, so that warm air can be generated in low-temperature weather, thereby providing heating for the indoor.

[0040] In the specific use, the compressor 7 starts, the high-temperature and high-pressure liquid working medium in the condensing high-pressure heater 8 can heat the tap water in the heat preservation water tank 2, and the working medium after passing through the heat preservation water tank 2 is low-temperature and high-pressure liquid, when passing through the throttling valve 9, the working medium is injected and evaporated to form low-temperature and low-pressure gas or gas-liquid mixed state to enter the bottom plate heat absorption evaporator 10, the warm waste water in the bath enters the bottom plate 11 from the water inlet hole 13 and contacts the bottom plate heat absorption evaporator 10, part of the heat in the warm waste water is absorbed by the return gas, and finally flows back to the compressor 7 to enter the next cycle. When the return gas temperature is insufficient to reach the appropriate temperature of the compressor 7, the fan 18 and the electric heating element 17 deliver warm air to the radiator 19, so that the return gas temperature of the compressor 7 approaches the optimal temperature of 25 degrees, so as to achieve the effect of energy saving.

[0041] Although the present application has been described with reference to the embodiments above, various improvements can be made thereto and equivalents can be substituted therefor without departing from the scope of the present application. In particular, each of the features disclosed in the embodiments of the present application can be used in any combination unless there is structural conflict. The combinations of these features are not exhaustively described in the specification only for the purpose of omitting the length and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat recovery heat pump water heater with a chassis water storage evaporator and a water tank integrated into one, characterized by: Comprising A cold water outlet (1) is connected to the water outlet end of domestic tap water; A heat preservation water tank (2) has a water inlet (3) and a water outlet (4), the water outlet (4) is connected with a water outlet pipe (5), and the output end of the water outlet pipe (5) is a hot water outlet (6); A heating cycle pipeline with working medium, compressor (7), condensing high pressure heater (8), throttle valve (9) and bottom plate heat absorbing evaporator (10), the condensing high pressure heater (8) is arranged in the heat preservation water tank (2), the bottom of the heat preservation water tank (2) is provided with a bottom plate (11) for containing warm waste water, the bottom plate heat absorbing evaporator (10) is arranged in the bottom plate (11), the top of the bottom plate (11) is provided with an upper cover (12), the upper cover (12) has a plurality of water inlet holes (13).

2. The integrated combination of a water tank and a heat recovery heat pump water heater with a bottom tank evaporator according to claim 1, characterized in that: The condensing high pressure heater (8) is located near the water inlet (3) of the heat preservation water tank (2).

3. The integrated combination of a water tank and a heat recovery heat pump water heater with a bottom tank evaporator according to claim 1, characterized in that: The inside of the heat preservation water tank (2) is provided with a temperature sensor (14), and the temperature sensor (14) is electrically connected with the compressor (7) through a controller.

4. The integrated combination of a water tank and a bottomed water-stored evaporator and heat-recovery heat pump hot water heater according to claim 1, characterized in that: The inside of the bottom plate (11) is provided with an overflow pipe (15) for discharging cold water at the bottom of the bottom plate (11).

5. The integrated combination of a water tank and a thermosiphon evaporator with heat recovery of claim 1, wherein: The bottom of the bottom plate (11) is provided with a sewage outlet (16), and the sewage outlet (16) is provided with a valve.

6. The integrated combination of a water tank and a heat-recovery heat pump water heater with a bottom tank evaporator as claimed in any one of claims 1-5, characterized in that: The backflow pipeline between the bottom plate heat absorbing evaporator (10) and the compressor (7) is provided with an auxiliary heating device.

7. The integrated combination of a water tank and a water storage evaporator heat recovery heat pump water heater according to claim 6, characterized in that: The auxiliary heating device includes an electric heating element (17), a fan (18) and a radiator (19), and the radiator (19) is connected to the backflow pipeline between the bottom plate heat absorbing evaporator (10) and the compressor (7).

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