CN1818498A - Hot-pump water heater with air source - Google Patents

Hot-pump water heater with air source Download PDF

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CN1818498A
CN1818498A CN 200610049686 CN200610049686A CN1818498A CN 1818498 A CN1818498 A CN 1818498A CN 200610049686 CN200610049686 CN 200610049686 CN 200610049686 A CN200610049686 A CN 200610049686A CN 1818498 A CN1818498 A CN 1818498A
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water
heat exchanger
valve
heat
water heater
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CN 200610049686
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CN100404980C (en
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黄道德
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黄道德
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Abstract

An air source heat pump water heater comprises a main body, a thermal storage insulated water tank and a controller. The main body is contactly made up of a finned tube type evaporimeter, an auxiliary frost-dissolving heat exchanger, a gas-liquid separator, a compressor, a double pipe heat exchanger, a reservoir, an electronic expansion valve, a reserving valve, a magnetic valve, a one-way valve and the relative refrigeration fittings. The double pipe heat exchanger is connected with a refrigerant and a heat water-circulating pipe lines separately to make the refrigerant and water exchange heat. The heat water-circulating pipes are disposed on the upper and lower parts of the heat storage insulated water tank separately.

Description

空气源热泵热水器 Air source heat pump water heater

一、所属技术领域本发明涉及一种空气源热泵热器,特别是对现有直接蒸发式空气源热泵热水器化霜系统及热水供给系统作了改进的一种节能、环保型的热水装置,属于能源类供热技术领域。 I. Technical Field The present invention relates to an ordinary air source heat pump, especially for an existing direct expansion air source heat pump water heater defrosting system and hot water supply system has been improved in an energy-saving, environment-friendly water-heating , belonging to the energy heating technology.

二、背景技术 Second, the technical background

目前我国热水器市场上普遍销售的热水器产品为电热水器、燃气热水器和太阳能热水器等。 Currently on the market generally sell our water heater water heater products for electric water heaters, gas water heaters and solar water heaters. 其中,电热水器以消耗大量昂贵的电力为代价,不利于能源的合理利用;燃气热水器在使用中则存在严重的安全隐患,每年因燃气热水器的使用而引发的中毒事件时有报道;常规的太阳能热水器在阴雨天是不能生产热水的,只能依靠电加热来弥补太阳能的不足,从而也存在能源的浪费现象,特别是在一些阴雨天比较多的南方地区使用这种热水器并不十分经济。 Among them, electric water heaters to consume large amounts of expensive electricity expense, is not conducive to the rational use of energy; gas water heater there is a serious security risk in use, it has been reported poisoning incidents each year due to the use of gas water heater triggered; conventional solar water heater in the rainy days can not produce hot water, can only rely on electric heating to compensate for the lack of solar energy, and thus there is waste of energy, the use of this water heater is not very economical, especially in some of the more rainy days in the south. 于是,一种新型的基于热泵循环原理的热水器开始在热水器市场上崭露头角,它是利用蒸发器从周围环境中吸收热能(太阳能、空气或水等),并通过冷凝器将热能释放到水中去,从而实现热水的生产。 Accordingly, the heat pump water heater based on a new cycle begins on the principles of the food market emerge, which is an evaporator absorbs thermal energy (solar energy, air or water, etc.) from the surrounding environment, and through a condenser to heat energy released into the water, enabling the production of hot water. 热泵热水器具有高效节能、环保、安全可靠等优点,可全天候使用。 Heat pump water heater having a high efficiency, and environmental protection, safe and reliable, all-weather use. 能源危机正越来越严重地制约着我国国民经济的快速发展,从近几年全国各地爆发的“电荒”就可以让我们十分清楚地认识到这一问题的严重性,因此,发展节能产品是国家支持、民众得益之举,具有广阔的发展和应用前景。 The energy crisis is more and more seriously restricting the rapid development of China's national economy in recent years, outbreaks across the country, "power shortage" can make us very clearly understand the seriousness of this issue, therefore, the development of energy-saving products State support, the public benefit of the move, and has a broad development prospects.

现有的空气源热泵热水器中,如:中国专利曾公开的“空气源热泵热水器”(CN200420019720.4,公告日2005.02.02),室外机由风冷换热器、压缩机及相关配件组成,板式冷凝器分别与制冷剂管路、热水循环管路进行连接,采用循环水泵提供热水回路的循环动力,保温水箱采用承压式结构,上、下部分别设有热水循环接管与板式冷凝器和循环水泵连接,形成闭合的热水循环回路,内筒内设有圆缺形的阻流隔板,以增加热水循环在水箱内的阻力,控制器采用单片机,输入端为插入水箱中的温度传感器,输出端控制压缩机、轴流风扇和循环水泵的启停,主要缺点是无法在北方地区推广应用。 Existing air source heat pump water heater, such as: Chinese patent has publicly "air-source heat pump water heater" (CN200420019720.4, announcement 2005.02.02), the outdoor unit by the air-cooled heat exchangers, compressors and related accessories composition, each plate condenser with the refrigerant line, the hot water circulation pipe is connected, power cycle using circulating hot water circuit pump, pressurized water tank holding structure, the upper and lower hot water circulation are provided to take over and condensing plate and a circulating pump are connected to form a closed circuit of hot water circulation, the cylinder is provided with a separator baffle circular segment-shaped, in order to increase the resistance to hot water circulation in the tank, using SCM controller, an input terminal to be inserted into the tank a temperature sensor output of the control of the compressor, the axial flow fan and the circulation pump start and stop, the main drawback is not popularized in the northern region. 如:“一种空气源热泵热水器”(CN200420027103.9,公告日2005.06.01)包括贮水箱、热泵机组、热泵换热器、水温传感器、环境温度传感器、电加热器和控制器。 Such as: "an air-source heat pump water heater" (CN200420027103.9, announcement 2005.06.01) comprises a water storage tank, heat pump, heat exchanger, a water temperature sensor, an ambient temperature sensor, an electric heater, and a controller. 所述电加热器安装在贮水箱内,控制器接受来自环境温度传感器和水温传感器的探测信号,根据两温度传感器探测的温度控制热泵机组及电加热器的工作与否,主要缺点是无化霜功能,无法在长江中下游地区推广应用。 The electric heater mounted in the water storage tank, the controller receiving a detection signal from the temperature sensor and the ambient temperature sensor, the temperature sensor according to the two detected temperature control operation of the electric heater and the heat pump or not, the main drawback is no defrost function, can not be popularized in the Yangtze River region.

市售一部分空气源热泵热水器:冷凝器直接放置水箱中,主机由压缩机、干燥过滤器、毛细管、风冷换热器、气液分离器及配管组成,结构简单、成本低廉,主要缺点是,无化霜装置,且适用环境温度范围小,高、低温性能差,在低温高湿的环境中无法使用,如在长江中下游地区无法推广应用。 Commercially available part of the air-source heat pump water heater: a condenser placed directly in the tank, the host a compressor, filter drier, capillary tube, air-cooled heat exchanger, a gas-liquid separator and a pipe, with the simple structure, low cost, the main drawback is, no defrosting device, and the application of environmental temperature range of small, high, poor low temperature performance, can not be used in low temperature and high humidity environments, such as the application can not be in the Yangtze River region. 另一部分空气源热泵热水器:在此基础上改进增加了空调传统化霜装置:四通换向阀或热气旁通电磁阀,虽然这两种改进都具备化霜功能,但由于毛细管自适应范围小的局限性,并不能从根本解决好高、低温性能,且化霜过程也存在缺陷,前者采用四通换向阀换向化霜的同时对水箱中的水进行制冷,从而造成热量损失;后者采用热气旁通电磁阀化霜,由于无法构成高低压差,导致化霜效果差、时间长。 Another portion of the air source heat pump water heater: Based on this improved conventional air conditioning increases defrost device: four-way valve or hot gas bypass solenoid valve, although both are provided with an improved defrosting function, but due to the small capillary adaptive range limitations, does not fundamentally solve the high and low temperature performance, and the defrosting process is flawed, former uses of the four-way reversing valve for cooling water to the water tank while defrosting, resulting in heat loss; after by using hot gas defrost bypass solenoid valve, since the low pressure difference can not be configured, resulting in poor defrosting, for a long time.

现有的商用空气源热泵热水器供水系统,大多数采用一蓄热保温储水箱通过循环水泵和空气源热泵热水器相连接构成水循环系统,冷水补给采用不锈钢浮球控制,空气源热泵热水器根据储水箱内的温度启停,蓄热保温储水箱容量一般根据客户每天用水量而定,主要缺点是,储水箱容量大,短时间内热泵热水器不能将满箱冷水加热到客户需求温度,即在将水加热到客户需求温度之前客户无法用水,不能实现真正的全天候供热水,另外,即便是满箱热水,但客户使用热水的同时冷水又不断地补进,热水使用了多少,冷水就进了多少,水箱温度不断降低,当使用了一半时,水温已降至客户需求温度以下,以致热水利用率极低。 Existing commercial air source heat pump system water heater, air-source heat pump water heater uses most of the water storage tank according to a regenerative heat storage tank through the circulation pump is connected to an air source heat pump water heater and water circulation system configuration, the cold water supply control stainless steel float, start and stop temperature, the heat storage capacity of the heat storage tank according to the general water per day depending on the customer, the main disadvantage is that large capacity storage tank, the heat pump water heater can not be filled in a short time with cold water tank is heated to a temperature of customer demand, i.e., the water is heated to customer needs before the customer can not water temperature, can not achieve true all-weather hot water. in addition, even if the full tank of hot water, but at the same time customers use hot water into cold water and continue to make, how much hot water use, went into cold water how much, continue to lower the water temperature when using half the water temperature has dropped to customer demand temperature, so that hot water utilization is very low.

三、发明创造内容本发明的目的在于针对现有技术的不足,对现有直接蒸发式空气源泵热水器化霜系统及热水供给系统作了改进,提供一种新型结构的空气源热泵热水器,具有适用范围广、可靠性高、节能等优点的全天侯热水供应系统。 Third, the object of creating the present invention is to deficiencies of the prior art, the existing direct expansion air source pump water heater defrosting system and hot water supply system has been improved, air source heat pump water heater to provide a new structure, has a wide application range, high reliability and energy saving advantages of all-day hot water supply system.

为了实现这样的目的,本发明创造设计了一款空气源热泵热水器:主机由翅片管式蒸发器、辅助化霜换热器、汽液分离器、压缩机、套管换热器、储液器、电子膨胀阀、换向阀、电磁阀、单向阀及相关制冷配件以极为紧凑的结构形式组合起来,套管换热器分别与制冷剂管路、热水循环管路进行连接,使制冷剂与水进行热交换;采用外置循环水泵提供热水回路的循环动力;蓄热保温水箱采用非承压结构,进水管通过进水电磁阀与自来水管网连接;蓄热保温水箱上、下部分别设有循环热水管,并与套管换热器和循环水泵连接,从而形成闭合的热水循环回路;控制器由控制主板和线控器组成,主板和线控器主芯片均采用单片机控制,输入部分由环境温度传感器、盘管温度传感器、水箱温度传感器、高低水位开关、靶流开关等组成;输出用于控制进水电磁 In order to achieve this object, the present invention is designed to create an air source heat pump water heater: Host by the finned tube evaporator, defrost auxiliary heat exchanger, vapor-liquid separator, a compressor, a heat exchanger tube, the reservoir , electronic expansion valves, valve, solenoid valves, check valves and related accessories refrigerating combined to form an extremely compact configuration, the sleeve respectively connected to the heat exchanger a refrigerant line, the hot water circulation line, so that the refrigerant performs heat exchange with water; using external circulating pump provides circulation of hot water circuit power; the heat storage tank holding non-pressurized configuration, connected by inlet pipe inlet valve and the water pipe network; the heat storage tank insulation, circulating hot water pipe are respectively provided with a lower portion, and is connected to the casing heat exchanger and the circulation pump, the hot water so as to form a closed circulation circuit; wired remote controller and the control board composed of a main board and wired remote chips are used MCU control, the input section by the ambient temperature sensor, the coil temperature sensor, a water temperature sensor, a water level switch, switches and other components flow target; an output for controlling the fill solenoid 、循环水泵、压缩机、轴流风机、电子膨胀阀、化霜电磁阀等部件;为了保证热泵热水器在实际使用过程中的安全性、高效性、可靠性,本发明创造采用控制器对系统运行自动控制,所有控制功能由单片机来实现,通过对环境温度、进水温度实时采集计算,即时调节电子膨胀阀开度和电机转速,使制冷系统始终运行在最佳状态;同时系统还具有高压、低压、排气温度过高等多重保护,确保系统在各种情况下都能安全运行。 , Circulating pumps, compressors, axial fans, electronic expansion valves, solenoid valves and other components defrost; heat pump water heater in order to ensure safety in actual use, efficiency, reliability, the present invention is employed to create a system controller operating automatic control, all control functions are implemented by a microcontroller, by ambient temperature, water temperature is calculated real-time collection, for real time adjustment of the electronic expansion valve and the motor speed, the refrigeration system is always running in the best condition; while the system further has a high pressure, low pressure, exhaust temperature is too high, such as multiple protection to ensure the safe operation of the system can be in various situations.

为了保证热泵热水器在低温高湿环境中能够可靠运行,及时有效地除霜,本发明创造采用辅助化霜换热器进行除霜,在运行过程中,控制器通过对环境温度、盘管温度、进水温度、运行时间等参数进行实时采集,实时判断翅片管式蒸发器是否结霜,使系统能及时有效地进入化霜程序运行,在化霜运行过程中,制冷剂经压缩机压缩成高温高压气体通过换向阀换向进入翅片管式蒸发器,在对翅片管式蒸发器除霜的同时制冷剂蒸气被冷凝成低温高压液体,经过电子膨胀阀和化霜电磁阀流入辅助化霜换热器蒸发成低温低压制冷剂气体,最后再经过换向阀回流至压缩机,形成闭合的制冷循环系统;本发明创造通过套管换热器后面单向阀阻止制冷剂流经套管换热器,有效地防止化霜过程中热量损失,同时也从根本解决了化霜过程中套管换热器被冻裂的可能性。 To ensure reliable operation of the heat pump water heater in a low humidity environment, timely and effective defrosting, the present invention uses to create the auxiliary heat exchanger defrosting defrosting, during operation, the controller by the ambient temperature, coil temperature, water temperature, time and other operating parameters of real-time collection, real-time finned tube evaporator is determined whether the frost, the system can promptly and effectively run into defrost, during the defrosting operation, the refrigerant compressed by the compressor into pressure gas enters through the valve for the finned tube evaporator, while in the finned tube evaporator defrosting the refrigerant vapor is condensed to a high pressure cryogenic liquid, and through the electronic expansion valve flows into the auxiliary defrost solenoid valve evaporated to defrost the heat exchanger low-temperature low-pressure refrigerant gas, and finally back through the valve to the compressor to form a closed refrigeration cycle system; the present invention is to create a flow through the jacket to prevent the refrigerant heat exchanger through a check valve behind the casing tube heat exchangers, effectively prevent heat loss during defrosting, while also addressing the possibility of defrosting process is the cracking tube heat exchanger from the root.

为了保证热水供应系统在实际使用过程中真正实现全自动运行,无需人工值守,本发明创造通过控制器对热水循环管路中的靶流开关和蓄热保温水箱中的低水位开关、高水位开关及蓄热保温水箱温度进行采集,实时判断蓄热保温水箱中热水的温度及水位,使系统有效地对循环水泵、进水电磁阀、主机进行控制。 In order to ensure hot water supply system in actual use truly automatic operation, without human duty, the present invention is to create a target stream by the controller switches the hot water circulation pipe and the low level switch in the heat storage tank insulation, high heat storage tank and the water level switch holding temperature acquisition, real-time determination of the hot water in the heat storage tank insulation and the water temperature, the system effectively circulating pump, water valve, control host. 先通过进水电磁阀对蓄热保温水箱补冷水,当水位到达低水位开关时,循环水泵启动,运行两分钟后对靶流开关检测,如水流开关已闭合,则启动主机;当水位升高到低水位开关和高水位开关之间时,进水电磁阀启停根据蓄热保温水箱温度来控制,当蓄热保温水箱温度低于44℃时进水电磁阀关闭,随着热泵热水器对水不断加热,蓄热保温水箱温度不断上升,当蓄热保温水箱温度上升至47℃时,进水电磁阀开启补水,冷水补进的同时蓄热保温水箱温度又不断下降,当蓄热保温水箱温度下降至44℃时,进水电磁阀关闭,蓄热保温水箱中的水再被加热升高至47℃时,再补冷水,如此周而复始地循环工作,直至蓄热保温水箱水位升至高水位开关,然后再集中加热至设定温度后主机退出运行。 By holding the first inlet valve to fill the cold water storage tank, when the water level reaches the low water level switch, circulating water pump start, after two minutes running switch detects the target stream, such as a flow switch is closed, then the host starts; when the water level rises when switching between the low level and high level switch, water solenoid valves to control the start and stop holding the heat storage tank according to temperature, inlet solenoid valve is closed when the temperature is below the heat storage tank 44 is holding deg.] C, with a heat pump water heater continuously heating the heat storage tank holding the temperature rising, the heat storage tank insulation when the temperature rises to 47 deg.] C, replenishment inlet valve opening, while the cold water up into the heat storage tank insulation and temperature falling, when the temperature of the heat storage tank insulation when lowered to 44 ℃, inlet valve closed, the water in the heat storage holding tank is heated again raised to 47 deg.] C, supplemented with cold water, so the work cycle to cycle, until the water level rose to a high heat storage holding tank level switch, then heated to a set temperature centralized host out of operation. 采用这种对蓄热保温水箱分段补水、分段加热的方法,保证了蓄热保温水箱中的水始终是44℃以上的生活热水,从而实现全天侯提供热水。 With this method of heat storage tank insulation replenishment segment, the segment is heated to ensure that the regenerative heat water in the tank always is above 44 ℃ of hot water, hot water in order to achieve all-day.

四、附图说明 IV BRIEF DESCRIPTION

图1为本实施例的系统结构示意图(省略了控制器)。 (Not the controller) system structure diagram of the embodiment of FIG. 1 of the present embodiment.

图2为本实施例的热水供给系统示意图。 FIG 2 a schematic view of hot water supply system according to the present embodiment.

图中:1、蓄热保温水箱,2、循环热水管,3、循环水泵,4、套管换热器,5、压缩机,6、高压开关,7、低压开关,8、汽液分离器,9、换向阀,10、翅片管式蒸发器,11、轴流风扇,12、电机,13、辅助化霜换热器,14、化霜电磁阀,15、电子膨胀阀,16、单向阀,17、过滤器,18、储液器,19、自来水进水管,20、进水电磁阀,21、靶流开关,22、高水位开关,23、低水位开关,24、水箱温度传感器,25、热水供给管道,26、水过滤器,32、主机。 In FIG: 1, the heat storage water tank insulation 2, the hot water circulation pipe, 3, circulating pump 4, the heat exchanger tube 5, a compressor 6, the high voltage switch 7, the low pressure switch, 8, vapor-liquid separation , a 9, valve, 10, finned tube evaporator 11, an axial fan 12, a motor 13, an auxiliary defrost heat exchanger 14, the defrost solenoid valve 15, electronic expansion valve, 16 , check valve 17, filter 18, accumulator 19, the water inlet pipe 20, inlet valve 21, the target stream switch 22, the high water level switch 23, low level switch 24, the water tank a temperature sensor 25, a hot water supply pipe 26, the water filter 32, the host.

五、具体实施方式 V. DETAILED DESCRIPTION

以下结合实施例及其附图对本发明创造的技术方案作进一步详细描述。 The following Examples and the accompanying drawings in conjunction with embodiments of the present invention to create a technical solution is further described in detail.

如图1和图2所示,一种空气源热泵热水器,包括含有制冷系统的主机29、蓄热保温水箱1和控制器,控制器采用单片机控制,输入部分包括环境温度传感器、盘管温度传感器、水箱温度传感器24、高水位开关22、低水位开关23、靶流开关21,输出用于控制进水电磁阀20、循环水泵3、压缩机3、电机12、电子膨胀阀15、化霜电磁阀13,蓄热保温水箱1上、下部分别设有循环热水管2,并与套管换热器4和循环水泵3连接,主机29中的制冷系统由套管换热器4、压缩机5、高压开关6、低压开关7、汽液分离器8、具有反向不导通特性的换向阀9、翅片管式蒸发器10、辅助化霜换热器13、化霜电磁阀14、电子膨胀阀15、单向阀16、过滤器17、储液器18及配管组成一闭合制冷剂回路,换向阀9第一向通过高压开关6接压缩机5上部、第二向接套管换热器4上部、第三向接辅助化霜换热器13上 1 and 2, an air source heat pump water heater 2, the refrigeration system comprising comprising a host 29, and a heat storage tank holding a controller control of single input section comprises an ambient temperature sensor, a coil temperature sensor , water temperature sensor 24, high water level switch 22, low level switch 23, the target stream switch 21, outputs a control inlet valve 20, circulating pump 3, 3, the motor 12, the electronic expansion valve 15, an electromagnetic compressor defrost valve 13, the heat storage tank 1 holding the lower part of circulating hot water pipes 2 are provided, and the heat exchanger is connected to the sleeve 4 and the circulating pump 3, the host system 29 by the refrigerant pipe heat exchanger 4, the compressor 5, high-voltage switch 6, the low pressure switch 7, vapor-liquid separator 8, not having a reverse conducting characteristic switching valve 9, finned tube evaporator 10, defrosting the auxiliary heat exchanger 13, the electromagnetic valve 14 defrost , an electronic expansion valve 15, the check valve 16, filter 17, accumulator 18 and a pipe consisting of a closed refrigerant circuit, a first switching valve 9 by a high pressure switch connected to the upper portion of the compressor 56, the second nipple an upper portion of the heat exchanger tube 4, connected to the third auxiliary defrost heat exchanger 13 部和通过汽液分离器8和低压开关7接压缩机5下部、第四向接翅片管式蒸发器10上部,翅片管式蒸发器10下部设置电子膨胀阀15,辅助化霜换热器13下部设置化霜电磁阀14,套管换热器4通过储液器18、过滤器17、单向阀16接电子膨胀阀15和化霜电磁阀14,轴流风扇11、电机12和翅片管式蒸发器10组成风冷换热器。 And vapor-liquid separation unit 8 via low pressure switch 7 and the compressor 5 connected to a lower portion, a fourth finned tube connected to the evaporator 10 upper finned tube evaporator 10 is provided a lower portion of the electronic expansion valve 15, the auxiliary heat exchanger defrost 13 is provided in the lower defrost solenoid valve 14, the heat exchanger tube 418, filter 17, check valve 16 connected to the electronic expansion valves 15 and defrost solenoid valve 14, the axial flow fan 11 through the reservoir, and the motor 12 finned tube evaporator heat exchanger 10 composed of air.

参见图2,蓄热保温水箱1上部接由自来水进水管19和进水电磁阀20组成的补水系统,蓄热保温水箱1与套管换热器4之间接有靶流开关21,蓄热保温水箱1上部设有高水位开关22、下部设有低水位开关23和水箱温度传感器24。 Referring to Figure 2, the heat storage tank 1 holding an upper inlet pipe 19 connected to a water inlet valve 20 and the replenishment system consisting of the heat storage tank 1 and the heat exchanger tube 4 have indirect target stream switch 21, regenerative heat an upper portion of the tank 1 is provided with a high level switch 22, a lower portion provided with a low level switch 23 and a water tank temperature sensor 24.

参见图2,套管换热器4与循环水泵3之间设有水过滤器26。 Referring to Figure 2, the heat exchanger tube 26 provided between the water filter 34 and the circulating pump.

参见图2,蓄热保温水箱1下部接引出热水供给管道25。 Referring to Figure 2, the heat storage tank 1 holding a lower hot-water supply pipe 25 connected to the lead.

参见图2,蓄热保温水箱1采用非承压结构。 Referring to Figure 2, the heat storage tank 1 holding non-pressurized configuration.

在正常制热水时,制冷剂循环过程如图1示:沿实线箭头方向循环,制冷剂经压缩机5压缩成高温高压气体通过换向阀9进入套管换热器4,在套管换热器4中与循环水进行热交换对水进行加热,同时制冷剂蒸气被冷凝成低温高压液体,流经过滤器17、单向阀16后,通过电子膨胀阀15节流成低温低压液体进入翅片管式蒸发器10,在翅片管式蒸发器10中与强制的空气流进行热交换并蒸发成低温低压制冷剂气体,最后再经过换向阀9和汽液分离器8回流至压缩机5,形成闭合的制冷循环系统,如此周而复始地对循环水进行加热。 In normal hot water, the refrigerant cycle shown in FIG. 1: the direction of circulation along the solid line arrows, the refrigerant compressed by the compressor 5 to a high temperature high pressure gas through the valve 9 into the tube heat exchanger 4, the sleeve 4 for circulating water heat exchanger and the heat exchanger to heat water, while the refrigerant vapor is condensed to a high pressure cryogenic liquid flows through the filter 17, the check valve 16, through the electronic expansion valve is throttled to a low-temperature low-pressure liquid enters 15 finned tube evaporator 10, a heat exchange and evaporated to a low-temperature low-pressure refrigerant gas in the forced air flow in a finned tube evaporator 10, and finally through valve 9 and gas-liquid separator 8 is returned to the compressor machine 5 to form a closed refrigeration cycle system, so the cycle of the circulating water is heated. 在正常制热水时过程中化霜电磁阀14处于关闭状态,辅助化霜换热器13不起作用。 During the defrost solenoid valve 14 is closed during the normal hot water, auxiliary defrost heat exchanger 13 inoperative.

在寒冷的冬季,由于环境温度比较低,而且空气中具有一定的湿度,热泵热水器运行过程中翅片管式蒸发器10表面因空气中水蒸汽不断凝结而结霜,热泵系统制热效果也随之降低,此时控制器通过对环境温度、盘管温度、运行时间等参数进行实时采集,使系统及时有效地进入化霜程序运行,在化霜运行过程中,制冷剂经压缩机5压缩成高温高压气体通过换向阀换向9进入翅片管式蒸发器10,在对翅片管式蒸发器10除霜的同时制冷剂蒸气被冷凝成低温高压液体,经过电子膨胀阀15和化霜电磁阀14流入辅助化霜换热器13进行蒸发成低温低压制冷剂气体,最后再经过换向阀9回流至压缩机5,由于单向阀9反向不导通的特性,从而有效地阻止制冷剂流入套管冷凝器4对循环水进行制冷,有效地防止化霜过程中热量损失,同时也从根本上解决了化霜过程中套管冷凝器4被 In cold winter, due to the relatively low ambient temperature, and having a certain degree of humidity in the air, the surface 10 during operation of the heat pump water heater finned tube evaporator due to air and water vapor condensate continuously frost, the heating effect heat pump system with the decrease, this time by the controller in real-time acquisition ambient temperature, coil temperature, time and other operating parameters so that timely and effective running into the defrost, during the defrosting operation, the refrigerant compressed by the compressor 5 into pressure gas through the reversing valve 9 into the finned tube evaporator 10, while in the finned tubes of the evaporator 10 to defrost the refrigerant vapor is condensed to a high pressure cryogenic liquid, through the electronic expansion valves 15 and defrost the electromagnetic valve 14 flows into the auxiliary heat exchanger 13 for defrosting the evaporator to a low-temperature low-pressure refrigerant gas, and finally returns to the compressor 9 through the valve 5, the check valve 9 due to the non-conducting characteristic reverse, effectively blocking the refrigerant flows into the condenser tube 4 for cooling circulating water, effectively prevent heat loss during defrosting, but also solve the fundamental sleeve during defrost condenser 4 is 冻裂的可能性。 The cracking of possibilities.

参见图2,本发明创造热水供给系统由蓄热保温水箱1、循环热水管2、水过滤器26、循环水泵3、主机27组成一个热水循环系统,自来水进水管19和进水电磁阀20组成补水系统,高水位开关22、低水位开关23、水箱温度传感器24、靶流开关21为控制器输入参数,进水电磁阀20、循环水泵2、主机12为控制器输出执行部件,通过控制器对进水电磁阀20、循环水泵3、主机27智能控制,在实现全天侯热水供给的同时充分地提高了热水的利用率。 Referring to Figure 2, the present invention is to create a hot water supply system of a heat storage tank insulation, the hot water circulation pipe 2, the water filter 26, a circulating pump 3, the host system 27 composed of a hot water circulation, water inlet and water inlet solenoids 19 composition replenishment valve system 20, 22, high-low water level switch 23 level switch, water temperature sensor 24, the controller 21 switches the target stream input parameters, inlet valve 20, circulating pump 2, the host controller 12 to execute an output member, by the controller of the inlet valve 20, circulating pump 3, a host of intelligent control 27, while supplied hot-day to achieve sufficiently improve the utilization of hot water.

Claims (5)

1.一种空气源热泵热水器,包括含有制冷系统的主机(29)、蓄热保温水箱(1)和控制器,控制器采用单片机控制,输入部分包括环境温度传感器、盘管温度传感器、水箱温度传感器(24)、高水位开关(22)、低水位开关(23)、靶流开关(21),输出用于控制进水电磁阀(20)、循环水泵(3)、压缩机(3)、电机(12)、电子膨胀阀(15)、化霜电磁阀(13),蓄热保温水箱(1)上、下部分别设有循环热水管(2),并与套管换热器(4)和循环水泵(3)连接,其特征在于:主机(29)中的制冷系统由套管换热器(4)、压缩机(5)、高压开关(6)、低压开关(7)、汽液分离器(8)、具有反向不导通特性的换向阀(9)、翅片管式蒸发器(10)、辅助化霜换热器(13)、化霜电磁阀(14)、电子膨胀阀(15)、单向阀(16)、过滤器(17)、储液器(18)及配管组成一闭合制冷剂回路,换向阀(9)第一向通过高压开关(6)接压缩机(5)上部、第二向接 An air source heat pump water heater, comprising a refrigeration system comprising a host (29), the heat storage holding tank (1) and a controller control of single input section comprises an ambient temperature sensor, a coil temperature sensor, a water temperature a sensor (24), a high level switch (22), the low water level switch (23), a target flow switch (21), for controlling the inlet valve output (20), circulating pump (3), a compressor (3), motor (12), an electronic expansion valve (15), the defrost solenoid valve (13), the heat storage holding tank (1), respectively, with a lower circulating hot water pipe (2), and with the heat exchanger tube (4 ) and a circulating pump (3) is connected, wherein: a host (29) in a refrigeration system heat exchanger by the sleeve (4), a compressor (5), a high pressure switch (6), a low pressure switch (7), steam liquid separator (8) with valve (9) does not reverse conduction characteristic, finned tube evaporator (10), an auxiliary defrost heat exchanger (13), the defrost solenoid valve (14), electronic expansion valve (15), the one-way valve (16), the filter (17), the reservoir (18) and a pipe consisting of a closed refrigerant circuit switching valve (9) to a first through a high pressure switch (6) then the compressor (5) an upper portion, the second contact 套管换热器(4)上部、第三向接辅助化霜换热器(13)上部和通过汽液分离器(8)和低压开关(7)接压缩机(5)下部、第四向接翅片管式蒸发器(10)上部,翅片管式蒸发器(10)下部设置电子膨胀阀(15),辅助化霜换热器(13)下部设置化霜电磁阀(14),套管换热器(4)通过储液器(18)、过滤器(17)、单向阀(16)接电子膨胀阀(15)和化霜电磁阀(14),轴流风扇(11)、电机(12)和翅片管式蒸发器(10)组成风冷换热器。 Tube heat exchanger (4) upper, connected to the third auxiliary defrost heat exchanger (13) and through the upper gas-liquid separator (8) and a low pressure switch (7) connected to the compressor (5) a lower portion, the fourth then finned tube evaporator (10) upper portion, the fin tube evaporator (10) provided in the lower electronic expansion valve (15), an auxiliary defrost heat exchanger (13) provided in the lower defrost solenoid valve (14), the sleeve tube heat exchanger (4) through the reservoir (18), the filter (17), the one-way valve (16) connected to an electronic expansion valve (15) and defrosting the solenoid valve (14), an axial fan (11), motor (12) and the finned tube evaporator (10) consisting of air-cooled heat exchanger.
2.根据权利要求1所述的空气源热泵热水器,其特征在于:蓄热保温水箱(1)上部接由自来水进水管(19)和进水电磁阀(20)组成的补水系统,蓄热保温水箱(1)与套管换热器(4)之间接有靶流开关(21),蓄热保温水箱(1)上部设有高水位开关(22)、下部设有低水位开关(23)和水箱温度传感器(24)。 The air source heat pump water heater according to claim 1, wherein: the heat storage tank insulation (1) from the water inlet pipe connected to an upper portion (19) and the inlet valve (20) and supply system consisting of the heat storage thermal insulation the tank (1) and the heat exchanger tube (4) has an indirect target flow switch (21), the heat storage holding tank (1) is provided with an upper portion of the high water level switch (22), a lower portion provided with a low level switch (23) and tank temperature sensor (24).
3.根据权利要求1所述的空气源热泵热水器,其特征在于:套管换热器(4)与循环水泵(3)之间设有水过滤器(26)。 3. The air source heat pump water heater as claimed in claim 1, wherein: the filter is provided with water (26) between the heat exchanger tube (4) and the circulating pump (3).
4.根据权利要求1所述的空气源热泵热水器,其特征在于:蓄热保温水箱(1)下部接引出热水供给管道(25)。 4. The air source heat pump water heater as claimed in claim 1, wherein: the heat storage tank insulation (1) connected to a lower portion of the hot water supply line leads (25).
5.根据权利要求1所述的空气源热泵热水器,其特征在于:蓄热保温水箱(1)采用非承压结构。 The air source heat pump water heater as claimed in claim 1, wherein: the heat storage tank insulation (1) non-pressurized configuration.
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